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.travis.yml+54−36

@@ -1,5 +1,4 @@

1−dist: trusty

2−sudo: false

1+dist: xenial

32

43language: c

54

@@ -9,35 +8,37 @@ env:

98

109matrix:

1110 include:

12− - env: CABALVER="2.2" GHCVER="8.6.5" STACKVER="14.15" STYLISH=YES

13− addons: {apt: {packages: [cabal-install-2.2,ghc-8.6.5,hscolour], sources: [hvr-ghc]}}

14− - env: CABALVER="2.2" GHCVER="7.10.3" TESTS="test_c"

15− compiler: ": #GHC 7.10.3"

16− addons: {apt: {packages: [cabal-install-2.2,ghc-7.10.3,cppcheck,hscolour], sources: [hvr-ghc]}}

17−# Disabled because it's always timing out

18−# - env: CABALVER="1.24" GHCVER="8.0.1" TESTS="test_c"

19−# compiler: ": #GHC 8.0.1"

20−# addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1,cppcheck,hscolour], sources: [hvr-ghc]}}

21− - env: CABALVER="2.0" GHCVER="8.2.2" TESTS="lib_doc doc"

11+ - env: CABALVER="2.4" GHCVER="8.6.5" STACKVER="15.4" STYLISH=YES

12+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.6.5,hscolour], sources: [hvr-ghc]}}

13+ - env: CABALVER="2.4" GHCVER="8.2.2" TESTS="lib_doc doc"

2214 compiler: ": #GHC 8.2.2"

23− addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

24− - env: CABALVER="2.0" GHCVER="8.2.2" TESTS="test_js"

15+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

16+ - env: CABALVER="2.4" GHCVER="8.2.2" TESTS="test_js"

2517 compiler: ": #GHC 8.2.2"

26− addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

27− - env: CABALVER="2.0" GHCVER="8.2.2" TESTS="test_c"

18+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

19+ - env: CABALVER="2.4" GHCVER="8.2.2" TESTS="test_c"

2820 compiler: ": #GHC 8.2.2"

29− addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

30−#TODO: The idris built with those fails due to libffi dynamic linking version mismatch.

31−# Caused by the GHC backport to Trusty?

32−# - env: CABALVER="2.2" GHCVER="8.4.1" TESTS="lib_doc doc"

33−# compiler: ": #GHC 8.4.1"

34−# addons: {apt: {packages: [cabal-install-2.2,ghc-8.4.1,cppcheck,hscolour], sources: [hvr-ghc]}}

35−# - env: CABALVER="2.2" GHCVER="8.4.1" TESTS="test_js"

36−# compiler: ": #GHC 8.4.1"

37−# addons: {apt: {packages: [cabal-install-2.2,ghc-8.4.1,cppcheck,hscolour], sources: [hvr-ghc]}}

38−# - env: CABALVER="2.2" GHCVER="8.4.1" TESTS="test_c"

39−# compiler: ": #GHC 8.4.1"

40−# addons: {apt: {packages: [cabal-install-2.2,ghc-8.4.1,cppcheck,hscolour], sources: [hvr-ghc]}}

21+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.2.2,cppcheck,hscolour], sources: [hvr-ghc]}}

22+ - env: CABALVER="2.4" GHCVER="8.4.4" TESTS="lib_doc doc"

23+ compiler: ": #GHC 8.4.4"

24+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.4.4,cppcheck,hscolour], sources: [hvr-ghc]}}

25+ - env: CABALVER="2.4" GHCVER="8.4.4" TESTS="test_js"

26+ compiler: ": #GHC 8.4.4"

27+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.4.4,cppcheck,hscolour], sources: [hvr-ghc]}}

28+ - env: CABALVER="2.4" GHCVER="8.4.4" TESTS="test_c"

29+ compiler: ": #GHC 8.4.4"

30+ addons: {apt: {packages: [cabal-install-2.4,ghc-8.4.4,cppcheck,hscolour], sources: [hvr-ghc]}}

31+ - env: CABALVER="3.0" GHCVER="8.8.3" TESTS="lib_doc doc"

32+ compiler: ": #GHC 8.8.3"

33+ addons: {apt: {packages: [cabal-install-3.0,ghc-8.8.3,cppcheck,hscolour], sources: [hvr-ghc]}}

34+ - env: CABALVER="3.0" GHCVER="8.8.3" TESTS="test_js"

35+ compiler: ": #GHC 8.8.3"

36+ addons: {apt: {packages: [cabal-install-3.0,ghc-8.8.3,cppcheck,hscolour], sources: [hvr-ghc]}}

37+ - env: CABALVER="3.0" GHCVER="8.8.3" TESTS="test_c"

38+ compiler: ": #GHC 8.8.3"

39+ addons: {apt: {packages: [cabal-install-3.0,ghc-8.8.3,cppcheck,hscolour], sources: [hvr-ghc]}}

40+ - env: CABALVER="3.0" GHCVER="8.8.3" IDRIS2=YES

41+ addons: {apt: {packages: [cabal-install-3.0,ghc-8.8.3], sources: [hvr-ghc]}}

4142 fast-finish: true

4243

4344cache:

@@ -56,7 +57,7 @@ before_install:

5657 - unset CC

5758 - if [[ $TRAVIS_OS_NAME == 'linux' ]];

5859 then

59− export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$HOME/.cabal/bin:$PATH;

60+ export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$HOME/.cabal/bin:$HOME/opt/scheme/bin/:$PATH;

6061 export SED=sed;

6162 export ZCAT=zcat;

6263 fi

@@ -71,6 +72,21 @@ before_install:

7172 export PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig:$PKG_CONFIG_PATH;

7273 fi

7374 - if [ -n "$STYLISH" ]; then ./stylize.sh; exit $?; fi

75+ - if [ -n "$IDRIS2" ];

76+ then

77+ git clone https://github.com/edwinb/Idris2 &&

78+ wget https://github.com/cisco/ChezScheme/archive/v9.5.2.tar.gz &&

79+ tar xvzf v9.5.2.tar.gz &&

80+ cd ChezScheme-9.5.2 &&

81+ ./configure --threads --installprefix=$HOME/opt/scheme &&

82+ make -j install &&

83+ cd .. &&

84+ cabal v1-update &&

85+ travis_wait cabal v1-install &&

86+ cd Idris2 &&

87+ make idris2 && make base && make contrib;

88+ exit $?;

89+ fi

7490

7591install:

7692 - which cabal

@@ -88,7 +104,7 @@ install:

88104 # causing cabal's default configuration (jobs: $ncpus)

89105 # to run into the GHC #9221 bug which can result in longer build-times.

90106 - $SED -i -r 's/(^jobs:).*/\1 2/' $HOME/.cabal/config

91− - cabal install -f FFI --only-dependencies --enable-tests --dry -v > installplan.txt

107+ - cabal v1-install -f FFI --only-dependencies --enable-tests --dry -v > installplan.txt

92108 - $SED -i -e '1,/^Resolving /d' installplan.txt; cat installplan.txt

93109 # check whether current requested install-plan matches cached package-db snapshot

94110 - if diff -u installplan.txt $HOME/.cabsnap/installplan.txt;

@@ -101,7 +117,7 @@ install:

101117 echo "cabal build-cache MISS";

102118 rm -rf $HOME/.cabsnap;

103119 mkdir -p $HOME/.ghc $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin;

104− cabal install -f FFI --only-dependencies --enable-tests;

120+ cabal v1-install -f FFI --only-dependencies --enable-tests;

105121 fi

106122 # snapshot package-db on cache miss

107123 - if [ ! -d $HOME/.cabsnap ];

@@ -112,28 +128,30 @@ install:

112128 cp -a $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin installplan.txt $HOME/.cabsnap/;

113129 fi

114130

131+

115132before_script:

116133 - ORIGINAL_DIR=$(pwd)

117− - cabal sdist

134+ - cabal v1-sdist

118135 - cd ..

119136 - tar -xf ${ORIGINAL_DIR}/dist/${PKGNAME}*.tar.gz

120137 - cd ${PKGNAME}*

121138script:

139+ - export LD_PRELOAD=/opt/ghc/${GHCVER}/lib/ghc-${GHCVER}/rts/libffi.so.7

122140###

123141 - echo 'Configure...' && echo -en 'travis_fold:start:script.configure\\r'

124− - cabal configure -f FFI -f CI --enable-tests

142+ - cabal v1-configure -f FFI -f CI --enable-tests

125143 - echo -en 'travis_fold:end:script.configure\\r'

126144###

127145 - echo 'Build...' && echo -en 'travis_fold:start:script.build\\r'

128− - cabal build

146+ - cabal v1-build

129147 - echo -en 'travis_fold:end:script.build\\r'

130148###

131149 - echo 'Copy...' && echo -en 'travis_fold:start:script.copy\\r'

132− - cabal copy

150+ - cabal v1-copy

133151 - echo -en 'travis_fold:end:script.copy\\r'

134152###

135153 - echo 'Register...' && echo -en 'travis_fold:start:script.register\\r'

136− - cabal register

154+ - cabal v1-register

137155 - echo -en 'travis_fold:end:script.register\\r'

138156###

139157 - echo 'Cppcheck...' && echo -en 'travis_fold:start:script.cppcheck\\r'

CHANGELOG.md+3

@@ -1,3 +1,6 @@

1+# New since last release

2++ Updated to work with GHC 8.8 and cabal 3.0

3+

14# New in 1.3.2

25+ Documentation added to proof section

36

CITATION.md+1−1

@@ -17,7 +17,7 @@ If you use `Idris` in your work we would prefer it if you would use the followin

1717 pages = {552--593},

1818 numpages = {42},

1919 doi = {10.1017/S095679681300018X},

20− URL = {http://journals.cambridge.org/article_S095679681300018X},

20+ URL = {https://journals.cambridge.org/article_S095679681300018X},

2121}

2222```

2323

CONTRIBUTING.md+5−5

@@ -6,9 +6,9 @@ Here are a few guidelines that we would like contributors to follow so that we c

66

77## Getting Started

88

9−1. Make sure you are familiar with [Git](http://git-scm.com/book).

9+1. Make sure you are familiar with [Git](https://git-scm.com/book).

10101. Make sure you have a [GitHub account](https://github.com/signup/free).

11−1. Make sure you are familiar with: [Idris](http://eb.host.cs.st-andrews.ac.uk/writings/idris-tutorial.pdf).

11+1. Make sure you are familiar with: [Idris](https://eb.host.cs.st-andrews.ac.uk/writings/idris-tutorial.pdf).

12121. Make sure you can install Idris:

1313 * [Mac OS X](https://github.com/idris-lang/Idris-dev/wiki/Idris-on-OS-X-using-Homebrew)

1414 * [Ubuntu](https://github.com/idris-lang/Idris-dev/wiki/Idris-on-Ubuntu)

@@ -72,7 +72,7 @@ We do not want you wasting your time nor duplicating somebody's work!

7272

7373## Making Changes

7474

75−Idris developers and hackers try to adhere to something similar to the [successful git branching model](http://nvie.com/posts/a-successful-git-branching-model/).

75+Idris developers and hackers try to adhere to something similar to the [successful git branching model](https://nvie.com/posts/a-successful-git-branching-model/).

7676The steps are described below.

7777

7878### New contributors

@@ -175,8 +175,8 @@ To help increase the chance of your pull request being accepted:

175175* Idris FAQs: [Official](https://idris.readthedocs.io/en/latest/faq/faq.html); [Unofficial](https://github.com/idris-lang/Idris-dev/wiki/Unofficial-FAQ);

176176* [Idris Manual](https://github.com/idris-lang/Idris-dev/wiki/Manual);

177177* [Idris Tutorial](https://idris.readthedocs.io/en/latest/tutorial/index.html);

178−* [Idris News](http://www.idris-lang.org/news/);

179−* [other Idris docs](http://www.idris-lang.org/documentation/).

178+* [Idris News](https://www.idris-lang.org/news/);

179+* [other Idris docs](https://www.idris-lang.org/documentation/).

180180* [Using Pull Requests](https://help.github.com/articles/using-pull-requests)

181181* [General GitHub Documentation](https://help.github.com/).

182182

INSTALL.md+11−2

@@ -130,7 +130,8 @@ PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig stack build

130130## Issue with GHC on Ubuntu/Fedora

131131

132132There is an upstream issue with GHC on some Ubuntu and Fedora machines.

133−The issue is that for GHC versions greater than 8.4.X linking to libFFI is broken.

133+The issue is that for GHC versions greater than 8.4.X linking to libFFI uses the version of libFFI shipped with GHC, instead of the system version.

134+

134135See the following GHC issue page for more information:

135136

136137 <https://gitlab.haskell.org/ghc/ghc/issues/15397>

@@ -141,4 +142,12 @@ Specifically, one will see an error message along the lines of:

141142

142143> error while loading shared libraries: libffi.so.7: cannot open shared object file: No such file or directory

143144

144−We have supplied an alternative stack configuration file (`stack-alt.yaml`) that will use a version of GHC prior to the upstream issue being introduced.

145+A workround for this bug is to override the used libffi version (this is what we use on CI):

146+

147+```bash

148+export LD_PRELOAD=/opt/ghc/${GHCVER}/lib/ghc-${GHCVER}/rts/libffi.so.7

149+```

150+

151+## GHC 8.6

152+

153+For reasons that haven't been investigated building the Idris compiler with GHC 8.6 leads to a compiler which doesn't pass test.

Makefile+4−4

@@ -30,15 +30,15 @@ stylize:

3030 ./stylize.sh

3131

3232test_c:

33− $(CABAL) test $(ARGS) --test-options \

33+ $(CABAL) v1-test $(ARGS) --test-options \

3434 "$(TEST-ARGS) --rerun-update +RTS -N$(TEST-JOBS) -RTS"

3535

3636test_js:

37− $(CABAL) test $(ARGS) --test-options \

37+ $(CABAL) v1-test $(ARGS) --test-options \

3838 "$(TEST-ARGS) --node --rerun-update +RTS -N$(TEST-JOBS) -RTS"

3939

4040test_update:

41− $(CABAL) test $(ARGS) --test-options \

41+ $(CABAL) v1-test $(ARGS) --test-options \

4242 "$(TEST-ARGS) --accept +RTS -N$(TEST-JOBS) -RTS"

4343

4444test_clean:

@@ -56,7 +56,7 @@ linecount:

5656

5757#Note: this doesn't yet link to Hackage properly

5858doc: dist/setup-config

59− $(CABAL) haddock --hyperlink-source --html --hoogle --html-location="http://hackage.haskell.org/packages/archive/\$$pkg/latest/doc/html" --haddock-options="--title Idris"

59+ $(CABAL) v1-haddock --hyperlink-source --html --hoogle --html-location="https://hackage.haskell.org/packages/archive/\$$pkg/latest/doc/html" --haddock-options="--title Idris"

6060

6161lib_doc:

6262 $(MAKE) -C libs IDRIS=../../dist/build/idris/idris doc

README.md+7−4

@@ -4,11 +4,11 @@

44[](https://ci.appveyor.com/project/idrislang/idris-dev)

55[](https://readthedocs.org/projects/idris/?badge=latest)

66[](https://hackage.haskell.org/package/idris)

7−[](http://stackage.org/lts/package/idris)

8−[](http://stackage.org/nightly/package/idris)

7+[](https://stackage.org/lts/package/idris)

8+[](https://stackage.org/nightly/package/idris)

99[](https://www.irccloud.com/invite?channel=%23idris&hostname=irc.freenode.net&port=6697&ssl=1)

1010

11−Idris (http://idris-lang.org/) is a general-purpose functional programming

11+Idris (https://idris-lang.org/) is a general-purpose functional programming

1212language with dependent types.

1313

1414## Installation Guides.

@@ -28,7 +28,7 @@ Idris has support for external code generators. Supplied with the distribution

2828is a C code generator to compile executables, and a JavaScript code generator

2929with support for node.js and browser JavaScript.

3030

31−More information about [code generators can be found on the wiki](http://idris.readthedocs.io/en/latest/reference/codegen.html).

31+More information about [code generators can be found on the wiki](https://idris.readthedocs.io/en/latest/reference/codegen.html).

3232

3333## More Information

3434

@@ -44,3 +44,6 @@ where some interesting projects are being hosted.

4444

4545For those interested in contributing to Idris directly we kindly ask that

4646prospective developers please consult the [Contributing Guide](CONTRIBUTING.md) first.

47+

48+[Idris 2](https://github.com/edwinb/Idris2) is an early preview of the next generation

49+of Idris, implemented in Idris.

Setup.hs−33

@@ -215,36 +215,6 @@ idrisConfigure _ flags pkgdesc local = do

215215 autogenComponentModulesDir lbi _ = autogenModulesDir lbi

216216#endif

217217

218−idrisPreSDist args flags = do

219− let dir = S.fromFlag (S.sDistDirectory flags)

220− let verb = S.fromFlag (S.sDistVerbosity flags)

221− generateVersionModule verb "src" True

222− generateBuildFlagsModule verb "src" []

223− generateTargetModule verb "src" "./libs"

224− generateToolchainModule verb "src" Nothing

225− preSDist simpleUserHooks args flags

226−

227−idrisSDist sdist pkgDesc bi hooks flags = do

228− pkgDesc' <- addGitFiles pkgDesc

229− sdist pkgDesc' bi hooks flags

230− where

231− addGitFiles :: PackageDescription -> IO PackageDescription

232− addGitFiles pkgDesc = do

233− files <- gitFiles

234− return $ pkgDesc { extraSrcFiles = extraSrcFiles pkgDesc ++ files}

235− gitFiles :: IO [FilePath]

236− gitFiles = liftM lines (readProcess "git" ["ls-files"] "")

237−

238−idrisPostSDist args flags desc lbi = do

239− Control.Exception.catch (do let file = "src" </> "Version_idris" Px.<.> "hs"

240− let targetFile = "src" </> "Target_idris" Px.<.> "hs"

241− putStrLn $ "Removing generated modules:\n "

242− ++ file ++ "\n" ++ targetFile

243− removeFile file

244− removeFile targetFile)

245− (\e -> let e' = (e :: SomeException) in return ())

246− postSDist simpleUserHooks args flags desc lbi

247−

248218#if !(MIN_VERSION_Cabal(2,0,0))

249219rewriteFileEx :: Verbosity -> FilePath -> String -> IO ()

250220rewriteFileEx _ = rewriteFile

@@ -353,8 +323,5 @@ main = defaultMainWithHooks $ simpleUserHooks

353323 , postInst = \_ flags pkg local ->

354324 idrisInstall (S.fromFlag $ S.installVerbosity flags)

355325 NoCopyDest pkg local

356− , preSDist = idrisPreSDist

357− , sDistHook = idrisSDist (sDistHook simpleUserHooks)

358− , postSDist = idrisPostSDist

359326 , testHook = idrisTestHook

360327 }

appveyor.yml+3−3

@@ -1,17 +1,17 @@

11version: 1.0.{build}

22init:

33- ps: >-

4− choco install cabal --version=2.4.1.0 --no-progress

4+ choco install cabal --no-progress

55

66 mkdir C:\ghc

77

8− Invoke-WebRequest "http://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz" -OutFile C:\ghc\ghc.tar.xz -UserAgent "Curl"

8+ Invoke-WebRequest "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz" -OutFile C:\ghc\ghc.tar.xz -UserAgent "Curl"

99

1010 7z x C:\ghc\ghc.tar.xz -oC:\ghc

1111

1212 7z x C:\ghc\ghc.tar -oC:\ghc

1313

14− $env:PATH="$env:PATH;c:\ghc\ghc-8.4.3\bin;$HOME\AppData\Roaming\cabal\bin"

14+ $env:PATH="$env:PATH;c:\ghc\ghc-8.8.2\bin;$HOME\AppData\Roaming\cabal\bin"

1515

1616 cabal v1-update

1717

azure-pipelines.yml+1−1

@@ -68,7 +68,7 @@ jobs:

6868 choco install 7zip.portable -y --no-progress

6969 choco install msys2 -y --no-progress --params "/InstallDir=C:/msys64/"

7070 mkdir C:\ghc

71− Invoke-WebRequest "http://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz" -OutFile C:\ghc\ghc.tar.xz -UserAgent "Curl"

71+ Invoke-WebRequest "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz" -OutFile C:\ghc\ghc.tar.xz -UserAgent "Curl"

7272 7z x C:\ghc\ghc.tar.xz -oC:\ghc

7373 7z x C:\ghc\ghc.tar -oC:\ghc

7474 displayName: "Setting up environment"

benchmarks/pidigits/pidigits.idr+1−1

@@ -3,7 +3,7 @@ import Data.Vect

33

44{- Toy program that outputs the n first digits of Pi.

55

6− Inspired from http://www.haskell.org/haskellwiki/Shootout/Pidigits.

6+ Inspired from https://www.haskell.org/haskellwiki/Shootout/Pidigits.

77 The original ns and str lazy lists have been replaced by strict functions.

88

99 Memory usage seems to be excessive. One of the branches of str is tail recursive, and

docs/LICENSE+1−1

@@ -7,4 +7,4 @@ rights to Documentation for Idris.

77

88More information concerning the CC0 can be found online at:

99

10− http://creativecommons.org/publicdomain/zero/1.0/

10+ https://creativecommons.org/publicdomain/zero/1.0/

docs/Makefile+1−1

@@ -9,7 +9,7 @@ BUILDDIR = _build

99

1010# User-friendly check for sphinx-build

1111ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)

12−$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from http://sphinx-doc.org/)

12+$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from https://www.sphinx-doc.org/)

1313endif

1414

1515# Internal variables.

docs/README.md+3−3

@@ -1,7 +1,7 @@

11# Documentation for the Idris Language.

22

33

4−This manual has been prepared using ReStructured Text and the [Sphinx Documentation Generator](http://sphinx-doc.org) for future inclusion on [Read The Docs](http://www.readthedocs.org).

4+This manual has been prepared using ReStructured Text and the [Sphinx Documentation Generator](https://www.sphinx-doc.org) for future inclusion on [Read The Docs](https://www.readthedocs.org).

55

66## Dependencies

77

@@ -12,7 +12,7 @@ To build the manual the following dependencies must be met. We assume that you h

1212Python should be installed by default on most systems.

1313Sphinx can be installed either through your hosts package manager or using pip/easy_install.

1414

15−*Note* [ReadTheDocs](http://www.readthedocs.org) works with Sphinx

15+*Note* [ReadTheDocs](https://www.readthedocs.org) works with Sphinx

1616 `v1.2.2`. If you install a more recent version of sphinx then

1717 'incorrectly' marked up documentation may get passed the build system

1818 of readthedocs and be ignored. In the past we had several code-blocks

@@ -45,7 +45,7 @@ rights to Documentation for Idris.

4545

4646More information concerning the CC0 can be found online at:

4747

48− http://creativecommons.org/publicdomain/zero/1.0/

48+ https://creativecommons.org/publicdomain/zero/1.0/

4949

5050

5151When contributing material to the manual please bear in mind that the work will be licensed as above.

docs/_static/theme_overrides.cssnew file+13

@@ -0,0 +1,13 @@

1+/* override table width restrictions */

2+@media screen and (min-width: 767px) {

3+

4+ .wy-table-responsive table td {

5+ /* !important prevents the common CSS stylesheets from overriding

6+ this as on RTD they are loaded after this stylesheet */

7+ white-space: normal !important;

8+ }

9+

10+ .wy-table-responsive {

11+ overflow: visible !important;

12+ }

13+}

docs/conf.py+9−2

@@ -51,7 +51,7 @@ master_doc = 'index'

5151

5252# General information about the project.

5353project = u'Idris'

54−copyright = u'2017, The Idris Community'

54+copyright = u'2017-2020, The Idris Community'

5555author = u'The Idris Community'

5656

5757# The version info for the project you're documenting, acts as replacement for

@@ -151,6 +151,12 @@ if not on_rtd: # only import and set the theme if we're building docs locally

151151# so a file named "default.css" will overwrite the builtin "default.css".

152152html_static_path = ['_static']

153153

154+html_context = {

155+ 'css_files': [

156+ '_static/theme_overrides.css', # override wide tables in RTD theme

157+ ],

158+ }

159+

154160# Add any extra paths that contain custom files (such as robots.txt or

155161# .htaccess) here, relative to this directory. These files are copied

156162# directly to the root of the documentation.

@@ -245,6 +251,7 @@ latex_elements = {

245251# Additional stuff for the LaTeX preamble.

246252'preamble': r'''

247253\usepackage{lmodern}

254+\usepackage{textalpha}

248255\usepackage[T1]{fontenc}

249256\usepackage[utf8x]{inputenc}

250257\usepackage{titlesec}

@@ -294,7 +301,7 @@ latex_elements = {

294301# (source start file, target name, title,

295302# author, documentclass [howto, manual, or own class]).

296303latex_documents = [

297− ('index', 'idris-documentation-complete.tex', u'Documentation for the Idris Language', u'The Idris Community', 'report'),

304+ # (master_doc, 'idris.tex', u'Documentation for the Idris Language', u'The Idris Community', 'report')

298305 ('tutorial/index', 'idris-tutorial.tex', u'The Idris Tutorial', u'The Idris Community', 'howto'),

299306]

300307

docs/effects/conclusions.rst+1−1

@@ -51,7 +51,7 @@ foundations are also well-studied see [5]_, [6]_, [7]_, [8]_.

5151 Programming Languages and Systems (APLAS '09), Zhenjiang Hu

5252 (Ed.). Springer-Verlag, Berlin, Heidelberg,

5353 95-110. DOI=10.1007/978-3-642-10672-9_9

54− http://link.springer.com/chapter/10.1007%2F978-3-642-10672-9_9

54+ https://link.springer.com/chapter/10.1007%2F978-3-642-10672-9_9

5555

5656

5757.. [4] Ohad Kammar, Sam Lindley, and Nicolas Oury. 2013. Handlers in

docs/effects/depeff.rst+16−7

@@ -153,12 +153,21 @@ file management follows a resource usage protocol with the following

153153

154154- When a file is closed, its handle should no longer be used

155155

156−These requirements can be expressed formally in , by creating a

156+These requirements can be expressed formally by creating a

157157``FILE_IO`` effect parameterised over a file handle state, which is

158158either empty, open for reading, or open for writing. The ``FILE_IO``

159−effect’s definition is given below. Note that this

160−effect is mainly for illustrative purposes—typically we would also like

161−to support random access files and better reporting of error conditions.

159+effect’s definition is given below.

160+

161+.. note::

162+ This effect is mainly for illustrative purposes.

163+ Typically we would also like to support random access files and

164+ better reporting of error conditions.

165+

166+ Moreover, the ``FILE`` effect in the ``Effect.File`` module of

167+ the ``effects`` library uses slightly more complicated types to

168+ support erroneous behaviour of each function and to support more

169+ compilcated modes of opening, like for reading **and** writing,

170+ appending or truncating.

162171

163172.. code-block:: idris

164173

@@ -173,7 +182,7 @@ to support random access files and better reporting of error conditions.

173182

174183 open : (fname : String)

175184 -> (m : Mode)

176− -> Eff Bool [FILE_IO ()]

185+ -> Eff Bool [FILE_IO ()]

177186 (\res => [FILE_IO (case res of

178187 True => OpenFile m

179188 False => ())])

@@ -191,7 +200,7 @@ In particular, consider the type of ``open``:

191200

192201 open : (fname : String)

193202 -> (m : Mode)

194− -> Eff Bool [FILE_IO ()]

203+ -> Eff Bool [FILE_IO ()]

195204 (\res => [FILE_IO (case res of

196205 True => OpenFile m

197206 False => ())])

@@ -207,7 +216,7 @@ we continue the protocol accordingly.

207216

208217 readFile : Eff (List String) [FILE_IO (OpenFile Read)]

209218 readFile = readAcc [] where

210− readAcc : List String -> Eff (List String) [FILE_IO (OpenFile Read)]

219+ readAcc : List String -> Eff (List String) [FILE_IO (OpenFile Read)]

211220 readAcc acc = if (not !eof)

212221 then readAcc (!readLine :: acc)

213222 else pure (reverse acc)

docs/effects/index.rst+1−1

@@ -25,7 +25,7 @@ A tutorial on the `Effects` package in `Idris`.

2525 Idris Community* has waived all copyright and related or neighbouring

2626 rights to Documentation for Idris.

2727

28− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

28+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

2929

3030.. toctree::

3131 :maxdepth: 1

docs/effects/introduction.rst+3−2

@@ -3,7 +3,7 @@ Introduction

33************

44

55Pure functional languages with dependent types such as `Idris

6−<http://www.idris-lang.org/>`_ support reasoning about programs directly

6+<https://www.idris-lang.org/>`_ support reasoning about programs directly

77in the type system, promising that we can *know* a program will run

88correctly (i.e. according to the specification in its type) simply

99because it compiles. Realistically, though, things are not so simple:

@@ -17,7 +17,8 @@ exceptions, and verified resource management.

1717This tutorial assumes familiarity with pure programming in Idris,

1818as described in Sections 1–6 of the main tutorial [1]_. The examples

1919presented are tested with Idris and can be found in the

20−examples directory of the Idris repository.

20+examples directory of the Idris repository. The ``-p effects`` flag

21+is needed when starting Idris.

2122

2223Consider, for example, the following introductory function which

2324illustrates the kind of properties which can be expressed in the type

docs/effects/summary.rst+23−23

@@ -43,16 +43,16 @@ FILE\_IO

4343 data OpenFile : Mode -> Type

4444

4545 open : (fname : String)

46− -> (m : Mode)

47− -> Eff Bool [FILE_IO ()]

48− (\res => [FILE_IO (case res of

49− True => OpenFile m

50− False => ())])

46+ -> (m : Mode)

47+ -> Eff Bool [FILE_IO ()]

48+ (\res => [FILE_IO (case res of

49+ True => OpenFile m

50+ False => ())])

5151 close : Eff () [FILE_IO (OpenFile m)] [FILE_IO ()]

5252

53− readLine : Eff String [FILE_IO (OpenFile Read)]

53+ readLine : Eff String [FILE_IO (OpenFile Read)]

5454 writeLine : String -> Eff () [FILE_IO (OpenFile Write)]

55− eof : Eff Bool [FILE_IO (OpenFile Read)]

55+ eof : Eff Bool [FILE_IO (OpenFile Read)]

5656

5757 Handler FileIO IO where { ... }

5858

@@ -69,9 +69,9 @@ RND

6969

7070 RND : EFFECT

7171

72− srand : Integer -> Eff m () [RND]

73− rndInt : Integer -> Integer -> Eff m Integer [RND]

74− rndFin : (k : Nat) -> Eff m (Fin (S k)) [RND]

72+ srand : Integer -> Eff () [RND]

73+ rndInt : Integer -> Integer -> Eff Integer [RND]

74+ rndFin : (k : Nat) -> Eff (Fin (S k)) [RND]

7575

7676 Handler Random m where { ... }

7777

@@ -86,7 +86,7 @@ SELECT

8686

8787 SELECT : EFFECT

8888

89− select : List a -> Eff m a [SELECT]

89+ select : List a -> Eff a [SELECT]

9090

9191 Handler Selection Maybe where { ... }

9292 Handler Selection List where { ... }

@@ -102,10 +102,10 @@ STATE

102102

103103 STATE : Type -> EFFECT

104104

105− get : Eff m x [STATE x]

106− put : x -> Eff m () [STATE x]

107− putM : y -> Eff m () [STATE x] [STATE y]

108− update : (x -> x) -> Eff m () [STATE x]

105+ get : Eff x [STATE x]

106+ put : x -> Eff () [STATE x]

107+ putM : y -> Eff () [STATE x] [STATE y]

108+ update : (x -> x) -> Eff () [STATE x]

109109

110110 Handler State m where { ... }

111111

@@ -121,12 +121,12 @@ STDIO

121121

122122 STDIO : EFFECT

123123

124− putChar : Handler StdIO m => Char -> Eff m () [STDIO]

125− putStr : Handler StdIO m => String -> Eff m () [STDIO]

126− putStrLn : Handler StdIO m => String -> Eff m () [STDIO]

124+ putChar : Char -> Eff () [STDIO]

125+ putStr : String -> Eff () [STDIO]

126+ putStrLn : String -> Eff () [STDIO]

127127

128− getStr : Handler StdIO m => Eff m String [STDIO]

129− getChar : Handler StdIO m => Eff m Char [STDIO]

128+ getStr : Eff String [STDIO]

129+ getChar : Eff Char [STDIO]

130130

131131 Handler StdIO IO where { ... }

132132 Handler StdIO (IOExcept a) where { ... }

@@ -144,9 +144,9 @@ SYSTEM

144144

145145 SYSTEM : EFFECT

146146

147− getArgs : Handler System e => Eff e (List String) [SYSTEM]

148− time : Handler System e => Eff e Int [SYSTEM]

149− getEnv : Handler System e => String -> Eff e (Maybe String) [SYSTEM]

147+ getArgs : Eff (List String) [SYSTEM]

148+ time : Eff Int [SYSTEM]

149+ getEnv : String -> Eff (Maybe String) [SYSTEM]

150150

151151 Handler System IO where { ... }

152152 Handler System (IOExcept a) where { ... }

docs/elaboratorReflection/elabReflection.rstnew file+60

@@ -0,0 +1,60 @@

1+Extending Idris using Elaborator Reflection

2+===========================================

3+

4+Idris provides a mechanism to modify the language without having to recompile Idris itself. We can think of this in terms of metaprogramming or domain specific languages or just building in new capabilities.

5+

6+In order to extend the language we need to know something about how Idris is compiled. This page explains only what is needed to customise the elaboration. For more information about the compiler's implementation see `Edwin Brady's 2013 paper`_ and for customising the elaboration process see `Elaborator reflection: extending Idris in Idris`_ and `David Christiansen's PhD thesis`_.

7+

8+Compilation of Idris proceeds through a number of stages.

9+

10+- First, Idris is desugared by inserting placeholders for terms to be guessed by the compiler and replacing certain syntactic forms, such as do-notation, with the functions that implement them.

11+- Then, this desugared Idris is translated into a much simpler core language, called TT. This translation process is called elaboration.

12+- Finally, TT is type checked a second time to rule out errors, and then compiled into the target language.

13+

14+.. image:: ../image/idrisTopLevel.png

15+ :width: 484px

16+ :height: 147px

17+ :alt: diagram illustrating these stages of Idris compilation

18+

19+TT is a core language which is syntactically very simple. This makes it easy for computers to process but very verbose and hard for humans to read. The Idris elaborator is written in Haskell using an elaboration library that was inspired by the tactics in interactive proof assistants such as Coq.

20+

21+.. list-table::

22+

23+ * - There are some similarities with a proof assistant but in Idris the elaborator is an interpreter of Idris source in the elaboration monad, where each syntactic construct of Idris is interpreted as a sequence of tactics.

24+ - .. image:: ../image/compareToProofAssist.png

25+ :width: 206px

26+ :height: 112px

27+ :alt: diagram comparing elaboration with proof assistant

28+

29+The primitives in the elaboration library are not just useful for the implementors of Idris itself. They can also be used by authors of extensions to the compiler, using a mechanism known as elaborator reflection.

30+During elaboration TT (Raw) structure contains:

31+

32+- holes - placeholders for terms that have not yet been filled in.

33+- guesses - similar to let bindings, except with no reduction rule, so that elaboration programs can control the precise shape of terms that are under construction.

34+

35+For more information about holes and guesses see `Dependently Typed Functional Programs and their Proofs by McBride 1999`_.

36+

37+The following diagram is intended to illustrate a high level view of the tactics and how this eventually results in the TT language being generated. It is not necessary to understand the details at this stage. The intention is to help build up some intuition so that, when we get into the details, we can recognise how this fits into the big picture.

38+

39+.. image:: ../image/elabOverview.png

40+ :width: 410px

41+ :height: 282px

42+ :alt: diagram illustrating overview of TT language being generated from tactics.

43+

44+As already mentioned the TT core language is kept syntactically very simple, for instance, here are the binders in TT with corresponding code and logic type validity rules:

45+

46+.. list-table::

47+

48+ * - This diagram illustrates the basis of the compilation process in logic (in this case for binders). It is not necessary to be an expert logician to understand elaborator reflection. However, when learning about tactics, they may appear arbitrary without knowing some theory. For more information about this see `Edwin Brady's 2013 paper`_.

49+ - .. image:: ../image/binders.png

50+ :width: 310px

51+ :height: 203px

52+ :alt: diagram illustrating basis of code in logic

53+

54+.. target-notes::

55+.. _`Edwin Brady's 2013 paper`: https://eb.host.cs.st-andrews.ac.uk/drafts/impldtp.pdf

56+.. _`Elaborator reflection: extending Idris in Idris`: https://dl.acm.org/citation.cfm?doid=2951913.2951932

57+.. _`David Christiansen's PhD thesis`: https://davidchristiansen.dk/david-christiansen-phd.pdf

58+.. _`Dependently Typed Functional Programs and their Proofs by McBride 1999`: https://www.era.lib.ed.ac.uk/handle/1842/374

59+

60+

docs/reference/elaborator-reflection.rst → docs/elaboratorReflection/elaborator-reflection.rstrenamed+11−5

@@ -1,8 +1,8 @@

11.. _elaborator-reflection:

22

3−*********************

4−Elaborator Reflection

5−*********************

3+**********************************

4+Elaborator Reflection Introduction

5+**********************************

66

77The Idris elaborator is responsible for converting high-level Idris code into the core language.

88It is implemented as a kind of embedded tactic language in Haskell, where tactic scripts are written in an *elaboration monad* that provides error handling and a proof state.

@@ -198,6 +198,12 @@ This is primarily useful for code generation, particularly for generating patter

198198

199199Learn More

200200==========

201−While this documentation is still incomplete, elaboration reflection works in Idris today.

202−As you wait for the completion of the documentation, the list of built-in tactics can be obtained using the ``:browse`` command in an Idris REPL or the corresponding feature in one of the graphical IDE clients to explore the ``Language.Reflection.Elab.Tactics`` namespace.

201+

202+Some tactics are introduced in the :ref:`proofs-index` section with further details, of those most relevant to elaborator reflection, on the following pages.

203+

204+The list of built-in tactics can be obtained using the ``:browse`` command in an Idris REPL or the corresponding feature in one of the graphical IDE clients to explore the ``Language.Reflection.Elab.Tactics`` namespace.

203205All of the built-in tactics contain documentation strings.

206+

207+For alternative ways to extend the Idris language see the :ref:`reference-index` section.

208+

209+The following pages explain more about the theory and practice of elaborator reflection.

docs/elaboratorReflection/example1.rstnew file+192

@@ -0,0 +1,192 @@

1+Elaborator Reflection - Identity Example

2+========================================

3+

4+.. list-table::

5+

6+ * - This example of elaborator reflection steps through this metaprogram that generates the identity function:

7+ - .. code-block:: idris

8+

9+ %language ElabReflection

10+

11+ idNat : Nat -> Nat

12+ idNat = %runElab (do intro `{{x}}

13+ fill (Var `{{x}})

14+ solve)

15+

16+.. list-table::

17+ :widths: 200 100

18+

19+ * - At the beginning of executing the elaboration script, the initial state consists of a single hole of type Nat -> Nat.

20+

21+ As a first approximation, the state consists of a term with holes in it, an indicator of which hole is focused, a queue of the next holes to focus on, and miscellaneous information like a source of fresh names. The intro tactic modifies this state, replacing the focused hole with a lambda and focusing on the lambda's body.

22+ - .. image:: ../image/tree.png

23+ :width: 119px

24+ :height: 109px

25+

26+The following is a walkthough looking at the state after each tactic:

27+

28+.. list-table::

29+

30+ * - Start with the type signature like this:

31+ - .. code-block:: idris

32+

33+ %language ElabReflection

34+

35+ idNat : Nat -> Nat

36+ idNat = %runElab (do

37+

38+ * - In order to investigate how the program works this table shows the proof state at each stage as the tactics are applied. So here is the proof state at the start:

39+ - .. image:: ../image/elabProofStateEx1_1.png

40+ :width: 310px

41+ :height: 115px

42+

43+ * - This table shows the hole types and what they depend on. The aim is to illustrate the types by analogy with proofs, as a line with the premises above it and the conclusion below it.

44+ - .. image:: ../image/elabLogicEx1_1.png

45+ :width: 277px

46+ :height: 15px

47+

48+ * - The term is:

49+ - ?{hole_0} ≈ ? {hole_2} . {hole_2} . {hole_0}

50+

51+ * - It is possible to read the state from the script by calling getEnv, getGoal and getHoles.

52+

53+ - The output of these calls contain structures with TT code. To show the results I hacked this: `my code`_. TT code is not really designed to be readable by humans, all the names are fully expanded, everything has a type down to universes (type of types). This is shown here to illustrate the information available.

54+

55+ .. code-block:: idris

56+

57+ getEnv=[]

58+

59+ getGoal=(hole_2, __pi_arg:(Nat.["Nat", "Prelude"]:{

60+ type constructor tag=8 number=0}.Type:U=(20:./Prelude/Nat.idr)->.

61+ {name ref{type constructor tag=8 number=0}Nat.["Nat","Prelude"]:

62+ Type:U=(20:./Prelude/Nat.idr)

63+ })

64+ })

65+

66+ getHoles=[{hole_2},{hole_0}]

67+

68+ * - getGuess

69+ - error no guess

70+

71+ * - Introduce a lambda binding around the current hole and focus on the body.

72+ - intro \`{{x}}

73+

74+ * - The state now looks like this:

75+ - .. image:: ../image/elabProofStateEx1_2.png

76+ :width: 312px

77+ :height: 84px

78+

79+ * - The hole types now looks like this:

80+ - .. image:: ../image/elabLogicEx1_2.png

81+ :width: 279px

82+ :height: 26px

83+

84+ * - The term now looks like this:

85+ - ?{hole_0} ≈ λ x . ? {hole_2} . {hole_2} . {hole_0}

86+

87+ * - Again we can check the state by calling getEnv, getGoal and getHoles: see `my code`_

88+

89+ - .. code-block:: idris

90+

91+ getEnv=[(x, {λ (Nat.["Nat", "Prelude"]:{

92+ type constructor tag=8 number=0}).

93+ Type:U=(20:./Prelude/Nat.idr)

94+ })]

95+

96+ getGoal=(hole_2, {name ref{type constructor tag=8 number=0}

97+ Nat.["Nat","Prelude"]:Type:U=(20:./Prelude/Nat.idr)

98+ })

99+

100+ getHoles=[{hole_2},{hole_0}]

101+

102+ * - getGuess

103+ - error no guess

104+

105+ * - Place a term into a hole, unifying its type

106+ - fill (Var \`{{x}})

107+

108+ * - The state still looks like this:

109+ - .. image:: ../image/elabProofStateEx1_3.png

110+ :width: 312px

111+ :height: 57px

112+

113+ * - The hole types now looks like this:

114+ - .. image:: ../image/elabLogicEx1_3.png

115+ :width: 290px

116+ :height: 26px

117+

118+ * - The term now looks like this:

119+ - ?{hole_0} ≈ λ x . ?{hole_2} ≈ x . {hole_2} . {hole_0}

120+

121+ * - Again we can check the state by calling getEnv, getGoal and getHoles: see `my code`_

122+

123+ - .. code-block:: idris

124+

125+ getEnv=[(x, {λ (Nat.["Nat", "Prelude"]:

126+ {type constructor tag=8 number=0}).

127+ Type:U=(20:./Prelude/Nat.idr)

128+ })]

129+

130+ getGoal=(hole_2, {name ref{type constructor tag=8 number=0}

131+ Nat.["Nat","Prelude"]:Type:U=(20:./Prelude/Nat.idr)

132+ })

133+

134+ getHoles=[{hole_2}, {hole_0}]

135+

136+ * - getGuess

137+ - .. code-block:: idris

138+

139+ {name ref bound x:

140+ {name ref{type constructor tag=8 number=0}

141+ Nat.["Nat","Prelude"]:Type:U=(20:./Prelude/Nat.idr)

142+ }

143+ }

144+

145+ * - Substitute a guess into a hole.

146+ - solve

147+

148+ * - The hole types now looks like this:

149+ - .. image:: ../image/elabLogicEx1_4.png

150+ :width: 131px

151+ :height: 14px

152+

153+ * - The term now looks like this:

154+ - ?{hole_0} ≈ λ x . x . {hole_0}

155+

156+ * - getEnv

157+

158+ getGoal

159+

160+ getHoles

161+

162+ - .. code-block:: idris

163+

164+ getEnv=[]

165+

166+ getGoal=(hole_0, __pi_arg:(Nat.["Nat", "Prelude"]:{

167+ type constructor tag=8 number=0}.

168+ Type:U=(20:./Prelude/Nat.idr)

169+ ->.{name ref

170+ {type constructor tag=8 number=0}

171+ Nat.["Nat","Prelude"]:Type:U=(20:./Prelude/Nat.idr)

172+ })

173+ })

174+

175+ getHoles=[{hole_0}]

176+

177+ * - getGuess

178+ - .. code-block:: idris

179+

180+ x:({λ (Nat.["Nat", "Prelude"]:{

181+ type constructor tag=8 number=0}).

182+ Type:U=(20:./Prelude/Nat.idr)

183+ }.{

184+ name ref bound

185+ x:{name ref {type constructor tag=8 number=0}

186+ Nat.["Nat","Prelude"]:Type:U=(20:./Prelude/Nat.idr)

187+ }

188+ })

189+ }

190+

191+.. target-notes::

192+.. _`my code`: https://github.com/martinbaker/Idris-dev/blob/uglyTTPrinter/libs/prelude/Language/Reflection/TTPrinter.idr

docs/elaboratorReflection/generatingData.rstnew file+385

@@ -0,0 +1,385 @@

1+Generating Datatypes and Functions at Compile Time

2+==================================================

3+

4+Program elements, such as datatypes and functions can be constructed at compile-time in the Elab monad.

5+This can allow proofs to be generated for user defined types or it could allow types to be automatically generated to support user defined types.

6+An example is the code, from `Elaborator reflection: extending Idris in Idris`_, that automatically generates accessibility predicates using the Bove-Capretta method.

7+

8+Generating Datatypes

9+--------------------

10+

11+There are two main 'tactics' associated with generating datatypes:

12+

13+- declareDatatype

14+- defineDatatype

15+

16+Which declare and define the datatype as the names suggest.

17+

18+.. list-table::

19+

20+ * - These 'tactics' and the data structures associated with them are listed in the tables later on this page, for now, here is a summary:

21+ - .. image:: ../image/generateDatatype.png

22+ :width: 332px

23+ :height: 246px

24+ :alt: diagram illustrating data structures associated with declareDatatype defineDatatype.

25+

26+.. list-table::

27+

28+ * - As a first example, the following boolean-like type can be constructed. When the compiler has run it will be available to us as if we had compiled it in the usual way:

29+ - .. code-block:: idris

30+

31+ λΠ> :printdef Two

32+ data Two : Type where

33+ F : Two

34+ T : Two

35+

36+This was generated by the following code:

37+

38+.. code-block:: idris

39+

40+ module TwoDef

41+ %language ElabReflection

42+

43+ addTwo : Elab ()

44+ addTwo = do let twoname : TTName = `{{TwoDef.Two}}

45+ let F2 = `{{TwoDef.F}}

46+ let T2 = `{{TwoDef.T}}

47+ declareDatatype $ Declare twoname [] `(Type)

48+ defineDatatype $ DefineDatatype twoname [

49+ Constructor `{{F}} [] (Var `{{TwoDef.Two}}),

50+ Constructor `{{T}} [] (Var `{{TwoDef.Two}})

51+ ]

52+

53+ %runElab addTwo

54+

55+.. list-table::

56+

57+ * - The constructors T and F can be called as would be expected:

58+ - .. code-block:: idris

59+

60+ λΠ> F

61+ F : Two

62+ λΠ> T

63+ T : Two

64+

65+Generating Functions

66+--------------------

67+

68+There are two main 'tactics' associated with generating functions:

69+

70+- declareType

71+- defineFunction

72+

73+Which declare and define the function as the names suggest.

74+

75+.. list-table::

76+

77+ * - These 'tactics' and the data structures associated with them are listed in the tables later on this page, for now, here is a summary:

78+ - .. image:: ../image/generateFunction.png

79+ :width: 332px

80+ :height: 246px

81+ :alt: diagram illustrating data structures associated with function declare and define.

82+

83+Note: The left hand side (lhs) and right hand side (rhs) of FunClause typically is of type 'Raw'.

84+

85+.. list-table::

86+

87+ * - Bound pattern variables are represented by 'PVar' binders:

88+ This diagram shows an example of a possible Raw structure that might be used in a function definition.

89+ - .. image:: ../image/generateFunction2.png

90+ :width: 264px

91+ :height: 239px

92+ :alt: diagram illustrating data structures associated with functions.

93+

94+.. list-table::

95+

96+ * - Some function definitions can now be added to the above datatype. This is what they will look like:

97+ - .. code-block:: idris

98+

99+ λΠ> :printdef perm1

100+ perm1 : Two -> Two

101+ perm1 F = F

102+ perm1 T = T

103+ λΠ> :printdef perm2

104+ perm2 : Two -> Two

105+ perm1 F = T

106+ perm1 T = F

107+

108+This was generated with the following code:

109+

110+.. code-block:: idris

111+

112+ let perm1 = `{{TwoDef.perm1}}

113+ declareType (Declare perm1 [MkFunArg `{{code}} (Var twoname) Explicit NotErased] (Var twoname))

114+ defineFunction $ DefineFun perm1 [

115+ MkFunClause (RApp (Var perm1) (Var `{{TwoDef.F}})) (Var F2),

116+ MkFunClause (RApp (Var perm1) (Var `{{TwoDef.T}})) (Var T2)

117+ ]

118+

119+ let perm2 = `{{TwoDef.perm2}}

120+ declareType (Declare perm2 [MkFunArg `{{code}} (Var twoname) Explicit NotErased] (Var twoname))

121+ defineFunction $ DefineFun perm2 [

122+ MkFunClause (RApp (Var perm1) (Var `{{TwoDef.F}})) (Var T2),

123+ MkFunClause (RApp (Var perm1) (Var `{{TwoDef.T}})) (Var F2)

124+ ]

125+

126+.. list-table::

127+

128+ * - This is what happens when we call the functions:

129+ - .. code-block:: idris

130+

131+ λΠ> perm1 F

132+ F : Two

133+ λΠ> perm1 T

134+ T : Two

135+ λΠ> perm2 F

136+ T : Two

137+ λΠ> perm2 T

138+ F : Two

139+

140+So far these datatypes and functions could have been written, statically, in the usual way. However, it is possible to imagine situations where we may need a lot of functions to be generated automatically at compile time. For example, if we extend this Boolean datatype to a datatype with more simple constructors (a finite set), we could generate a function for every possible permutation of that datatype back to itself.

141+

142+A Different Example which has Type Parameters

143+---------------------------------------------

144+

145+.. list-table::

146+

147+ * - Here is an example of a datatype with type parameters:

148+ - .. code-block:: idris

149+

150+ data N : Nat -> Type where

151+ MkN : N x

152+ MkN' : (x : Nat) -> N (S x)

153+

154+This was produced by the following code:

155+

156+.. code-block:: idris

157+

158+ module DataDef

159+ %language ElabReflection

160+

161+ addData : Elab ()

162+ addData = do

163+ let dataname : TTName = `{{DataDef.N}}

164+ declareDatatype $ Declare dataname [MkFunArg `{{n}} `(Nat) Explicit NotErased] `(Type)

165+ defineDatatype $ DefineDatatype dataname [

166+ Constructor `{{MkN}} [MkFunArg `{{x}} `(Nat) Implicit NotErased]

167+ (RApp (Var dataname) (Var `{{x}})),

168+ Constructor `{{MkN'}} [MkFunArg `{{x}} `(Nat) Explicit NotErased]

169+ (RApp (Var dataname) (RApp (Var `{S}) (Var `{{x}})))

170+ ]

171+

172+ %runElab addData

173+

174+So this declares and defines the following data structure 'N' with a constructor 'MkN' which can have an implicit or an explicit Nat argument. Which can be used like this:

175+

176+.. code-block:: idris

177+

178+ λΠ> :t N

179+ N : Nat -> Type

180+ λΠ> N 2

181+ N 2 : Type

182+ λΠ> N 0

183+ N 0 : Type

184+ λΠ> :t MkN

185+ MkN : N x

186+

187+Table of 'tactics' for Generating Data and Functions

188+----------------------------------------------------

189+

190+These are the functions that we can use to create data and functions in the Elab monad:

191+

192+.. list-table::

193+ :widths: 10 30

194+ :stub-columns: 1

195+

196+ * - declareType

197+ - Add a type declaration to the global context.

198+

199+ Signature:

200+

201+ declareType : TyDecl -> Elab ()

202+ * - defineFunction

203+ - Define a function in the global context. The function must have already been declared, either in ordinary Idris code or using `declareType`.

204+

205+ Signature:

206+

207+ defineFunction : FunDefn Raw -> Elab ()

208+

209+ * - declareDatatype

210+ - Declare a datatype in the global context. This step only establishes the type constructor; use `defineDatatype` to give it constructors.

211+

212+ Signature:

213+

214+ declareDatatype : TyDecl -> Elab ()

215+

216+ * - defineDatatype

217+ - Signature:

218+

219+ defineDatatype : DataDefn -> Elab ()

220+

221+ * - addImplementation

222+ - Register a new implementation for interface resolution.

223+

224+ Arguments:

225+

226+ - ifaceName the name of the interface for which an implementation is being registered

227+ - implName the name of the definition to use in implementation search

228+

229+ Signature:

230+

231+ addImplementation : (ifaceName, implName : TTName) -> Elab ()

232+

233+ * - isTCName

234+ - Determine whether a name denotes an interface.

235+

236+ Arguments:

237+

238+ - name - a name that might denote an interface.

239+

240+ Signature:

241+

242+ isTCName : (name : TTName) -> Elab Bool

243+

244+Table of Datatypes Associated with Generating Data and Functions

245+----------------------------------------------------------------

246+

247+The above functions use the following data/records:

248+

249+.. list-table::

250+ :widths: 10 30

251+ :stub-columns: 1

252+

253+ * - Plicity

254+ - How an argument is provided in high-level Idris

255+

256+ .. code-block:: idris

257+

258+ data Plicity=

259+ ||| The argument is directly provided at the application site

260+ Explicit |

261+ ||| The argument is found by Idris at the application site

262+ Implicit |

263+ ||| The argument is solved using interface resolution

264+ Constraint

265+

266+ * - FunArg

267+ - Function arguments

268+

269+ These are the simplest representation of argument lists, and are used for functions. Additionally, because a FunArg provides enough

270+ information to build an application, a generic type lookup of a top-level identifier will return its FunArgs, if applicable.

271+

272+ .. code-block:: idris

273+

274+ record FunArg where

275+ constructor MkFunArg

276+ name : TTName

277+ type : Raw

278+ plicity : Plicity

279+ erasure : Erasure

280+

281+ * - TyConArg

282+ - Type constructor arguments

283+

284+ Each argument is identified as being either a parameter that is

285+

286+ consistent in all constructors, or an index that varies based on

287+

288+ which constructor is selected.

289+

290+ .. code-block:: idris

291+

292+ data TyConArg =

293+ ||| Parameters are uniform across the constructors

294+ TyConParameter FunArg |

295+ ||| Indices are not uniform

296+ TyConIndex FunArg

297+

298+ * - TyDecl

299+ - A type declaration for a function or datatype

300+

301+ .. code-block:: idris

302+

303+ record TyDecl where

304+ constructor Declare

305+ ||| The fully-qualified name of the function or datatype being declared.

306+ name : TTName

307+ ||| Each argument is in the scope of the names of previous arguments.

308+ arguments : List FunArg

309+ ||| The return type is in the scope of all the argument names.

310+ returnType : Raw

311+

312+ * - FunClause

313+ - A single pattern-matching clause

314+

315+ .. code-block:: idris

316+

317+ data FunClause : Type -> Type where

318+ MkFunClause : (lhs, rhs : a) -> FunClause a

319+ MkImpossibleClause : (lhs : a) -> FunClause a

320+

321+ * - FunDefn

322+ - A reflected function definition.

323+

324+ .. code-block:: idris

325+

326+ record FunDefn a where

327+ constructor DefineFun

328+ name : TTName

329+ clauses : List (FunClause a)

330+

331+ * - ConstructorDefn

332+ - A constructor to be associated with a new datatype.

333+

334+ .. code-block:: idris

335+

336+ record ConstructorDefn where

337+ constructor Constructor

338+ ||| The name of the constructor. The name must _not_ be qualified -

339+ ||| that is, it should begin with the `UN` or `MN` constructors.

340+ name : TTName

341+ ||| The constructor arguments. Idris will infer which arguments are

342+ ||| datatype parameters.

343+ arguments : List FunArg

344+ ||| The specific type constructed by the constructor.

345+ returnType : Raw

346+

347+ * - DataDefn

348+ - A definition of a datatype to be added during an elaboration script.

349+

350+ .. code-block:: idris

351+

352+ record DataDefn where

353+ constructor DefineDatatype

354+ ||| The name of the datatype being defined. It must be

355+ ||| fully-qualified, and it must have been previously declared as a

356+ ||| datatype.

357+ name : TTName

358+ ||| A list of constructors for the datatype.

359+ constructors : List ConstructorDefn

360+

361+ * - CtorArg

362+ - CtorParameter

363+

364+ .. code-block:: idris

365+

366+ data CtorArg = CtorParameter FunArg | CtorField FunArg

367+

368+ * - Datatype

369+ - A reflected datatype definition

370+

371+ .. code-block:: idris

372+

373+ record Datatype where

374+ constructor MkDatatype

375+ ||| The name of the type constructor

376+ name : TTName

377+ ||| The arguments to the type constructor

378+ tyConArgs : List TyConArg

379+ ||| The result of the type constructor

380+ tyConRes : Raw

381+ ||| The constructors for the family

382+ constructors : List (TTName, List CtorArg, Raw)</td>

383+

384+.. target-notes::

385+.. _`Elaborator reflection: extending Idris in Idris`: https://dl.acm.org/citation.cfm?doid=2951913.2951932

docs/elaboratorReflection/holes.rstnew file+196

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1+Elaborator Reflection - Holes

2+=============================

3+

4+The process of doing proofs and elaborator reflection tends to involve stating with a desired conclusion and working back to known premises. This often needs intermediate sub-goals which may only be partially solved, these are encoded using 'holes' and 'guesses'.

5+

6+* A hole is a term (an expression - a chunk of code) which is yet to be determined. We do have information about its type (this process tends to be type driven).

7+* A guess is like a hole that is not yet bound.

8+

9+The theory around this was developed in `Dependently Typed Functional Programs and their Proofs by McBride 1999`_.

10+

11+Notation for Holes and Guesses

12+------------------------------

13+

14+There is a notation used in the McBride 1999 thesis which is adapted for the TT language. When working on elaborator reflection it is useful to know this notation, for instance when reading the output of the 'debug' tactic.

15+

16+* A focused hole is notated like this ?x:t . t

17+* A guess is notated like this ?x ≈ t:t . t

18+

19+The following example shows how this is used:

20+

21+Simple Example

22+--------------

23+

24+Start with a code file that just contains:

25+

26+.. code-block:: idris

27+

28+ %language ElabReflection

29+

30+ testFn : Nat

31+ testFn = %runElab (do debug {a = ()})

32+

33+when this is loaded the following is displayed:

34+

35+.. code-block:: idris

36+

37+ Holes:

38+ ----------------------------------

39+ {hole_2} : Prelude.Nat.Nat

40+

41+ ----------------------------------

42+ {hole_0} : Prelude.Nat.Nat

43+

44+ Term:

45+ ?{hole_0} ≈ ? {hole_2} . {hole_2} . {hole_0}

46+

47+This shows information about the state when debug is encountered, during tactic execution, which allows us to investigate what is happening at each stage.

48+

49+* The "Holes" part shows the types of the holes and the local context of each

50+* The "Term" part shows where these holes are in the expression being constructed.

51+

52+So starting with the "Term" part we have.

53+

54+.. code-block:: idris

55+

56+ ?{hole_0} ≈ ? {hole_2} . {hole_2} . {hole_0}

57+

58+.. sidebar:: attack tactic

59+

60+ This kind of thing tends to arise from "attack", which helps keep binding forms in order.

61+

62+The meaning of this is not immediately apparent so it helps to add some parentheses to make the structure clearer:

63+

64+.. code-block:: idris

65+

66+ (?{hole_0} ≈ (? {hole_2} . {hole_2}) . {hole_0})

67+

68+First lets look at the inner part:

69+

70+.. code-block:: idris

71+

72+ ? {hole_2} . {hole_2}

73+

74+We can substitute in the type from the "Holes" part:

75+

76+.. code-block:: idris

77+

78+ ? {hole_2}:Nat . {hole_2}:Nat

79+

80+So we are looking for a hole of type Nat and all we know is it has type Nat.

81+

82+Going back to the full term, the above is wrapped in a guess, so it means: 'a guess that is itself a hole'.

83+

84+Since the elaborator does not have any further information it has to be given a value:

85+

86+.. code-block:: idris

87+

88+ %language ElabReflection

89+

90+ testFn : Nat

91+ testFn = %runElab (do fill `(Z)

92+ debug {a = ()}

93+ solve)

94+

95+Now we have a guess for hole_2 which is itself a guess for hole_0:

96+

97+.. code-block:: idris

98+

99+ ?{hole_0} ≈ ?{hole_2} ≈ Prelude.Nat.Z . {hole_2} . {hole_0}

100+

101+The guesses can be accepted by calling the 'solve' tactic.

102+

103+Example Showing Patterns

104+------------------------

105+

106+In this next example a parameter 'n' has been added to the function. This allows us to see how patterns are used. Starting with this file:

107+

108+.. code-block:: idris

109+

110+ %language ElabReflection

111+

112+ testFn : Nat -> Nat

113+ testFn n = %runElab (do debug {a = ()})

114+

115+when loaded gives:

116+

117+.. code-block:: idris

118+

119+ Holes:

120+ n : Prelude.Nat.Nat

121+ ----------------------------------

122+ {hole_3} : Prelude.Nat.Nat

123+

124+ n : Prelude.Nat.Nat

125+ ----------------------------------

126+ {hole_1} : Prelude.Nat.Nat

127+

128+ ----------------------------------

129+ {hole_0} : patTy n : Prelude.Nat.Nat . Prelude.Nat.Nat

130+

131+ Term:

132+ ?{hole_0} ≈ pat n : Prelude.Nat.Nat .

133+ ?{hole_1} ≈ ? {hole_3} . {hole_3} . {hole_1} .

134+ {hole_0}

135+

136+The ns above the lines show the context of the holes on the right hand side - they include the variable n that is an argument!

137+

138+patTy is a binding form in Idris's core language that introduces a pattern variable. The idea is that the left-hand side and right-hand side of each pattern should have the same type. Because pattern variables may occur multiple times on either side of the equation, we can achieve this by documenting their types with a binding form that wraps each side. This new binding form is why an "attack" was necessary prior to elaborating the RHS.

139+

140+patTy is a type former, and pat is the corresponding introduction form. So you can think of patTy as being a bit like a dependent function type, and pat as being a bit like lambda, except they don't introduce functions (they instead are used for pattern-matching definitions).

141+

142+More Complicated Example

143+------------------------

144+

145+This example does not introduce any new notation but the extra complexity gives a more realistic idea of how it is used. Here we start with this file:

146+

147+.. code-block:: idris

148+

149+ %language ElabReflection

150+

151+ testFn : (n : Nat) -> (n = plus n Z) -> (S n = S (plus n Z))

152+ testFn k ih = %runElab (do debug {a = ()})

153+

154+when loaded gives:

155+

156+.. code-block:: idris

157+

158+ Holes:

159+ k : Prelude.Nat.Nat

160+ ih : = Prelude.Nat.Nat Prelude.Nat.Nat k

161+ (Prelude.Nat.plus k Prelude.Nat.Z)

162+ ----------------------------------

163+ {hole_4} : = Prelude.Nat.Nat Prelude.Nat.Nat (Prelude.Nat.S k)

164+ (Prelude.Nat.S (Prelude.Nat.plus k Prelude.Nat.Z))

165+

166+ k : Prelude.Nat.Nat

167+ ih : = Prelude.Nat.Nat Prelude.Nat.Nat k

168+ (Prelude.Nat.plus k Prelude.Nat.Z)

169+ ----------------------------------

170+ {hole_2} : = Prelude.Nat.Nat Prelude.Nat.Nat (Prelude.Nat.S k)

171+ (Prelude.Nat.S (Prelude.Nat.plus k Prelude.Nat.Z))

172+

173+ k : Prelude.Nat.Nat

174+ ----------------------------------

175+ {hole_1} : patTy ih : = Prelude.Nat.Nat Prelude.Nat.Nat k

176+ (Prelude.Nat.plus k Prelude.Nat.Z) .

177+ = Prelude.Nat.Nat Prelude.Nat.Nat (Prelude.Nat.S k)

178+ (Prelude.Nat.S (Prelude.Nat.plus k Prelude.Nat.Z))

179+

180+ ----------------------------------

181+ {hole_0} : patTy k : Prelude.Nat.Nat .

182+ patTy ih : = Prelude.Nat.Nat Prelude.Nat.Nat k

183+ (Prelude.Nat.plus k Prelude.Nat.Z) .

184+ = Prelude.Nat.Nat Prelude.Nat.Nat (Prelude.Nat.S k)

185+ (Prelude.Nat.S (Prelude.Nat.plus k Prelude.Nat.Z))

186+

187+ Term:

188+ ?{hole_0} ≈ pat k : Prelude.Nat.Nat .

189+ ?{hole_1} ≈ pat ih : = Prelude.Nat.Nat Prelude.Nat.Nat k

190+ (Prelude.Nat.plus k Prelude.Nat.Z) .

191+ ?{hole_2} ≈ ? {hole_4} . {hole_4} . {hole_2} .

192+ {hole_1} .

193+ {hole_0}

194+

195+.. target-notes::

196+.. _`Dependently Typed Functional Programs and their Proofs by McBride 1999`: https://www.era.lib.ed.ac.uk/handle/1842/374

docs/elaboratorReflection/index.rstnew file+27

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1+.. _elaborator-index:

2+

3+#####################

4+Elaborator Reflection

5+#####################

6+

7+A tutorial on theorem proving in Idris.

8+

9+.. note::

10+

11+ The documentation for Idris has been published under the Creative

12+ Commons CC0 License. As such to the extent possible under law, *The

13+ Idris Community* has waived all copyright and related or neighboring

14+ rights to Documentation for Idris.

15+

16+ More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

17+

18+.. toctree::

19+ :maxdepth: 1

20+

21+ elaborator-reflection

22+ elabReflection

23+ tactics

24+ holes

25+ example1

26+ primitive

27+ generatingData

docs/elaboratorReflection/primitive.rstnew file+518

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1+Primitive Operators

2+===================

3+

4+.. list-table::

5+ :widths: 10 30

6+ :stub-columns: 1

7+

8+ * - gensym

9+ - Generate a unique name based on some hint.

10+

11+ Useful when establishing a new binder.

12+

13+ **NB**: the generated name is unique **for this run of the elaborator**.

14+

15+ Do not assume that they are globally unique.

16+

17+ Signature:

18+

19+ gensym : (hint : String) -> Elab TTName

20+

21+ * - solve

22+ - Substitute a guess into a hole.

23+

24+

25+ .. image:: ../image/solve.png

26+ :width: 141px

27+ :height: 74px

28+ :alt: diagram illustrating solve tactic

29+

30+

31+ Substitute the focused guess throughout its scope, eliminating it and moving focus to the next element of the hole queue. Fail if the focus is not a guess.

32+

33+ Signature:

34+

35+ solve : Elab ()

36+

37+ Example:

38+

39+ .. code-block:: idris

40+

41+ %language ElabReflection

42+

43+ testFn : Nat

44+ testFn = %runElab (do fill `(Z)

45+ solve)

46+

47+ * - fill

48+ - Place a term into a hole, unifying its type. Fails if the focus is not a hole.

49+

50+

51+ .. image:: ../image/fill.png

52+ :width: 140px

53+ :height: 74px

54+ :alt: diagram illustrating fill tactic

55+

56+

57+ Signature:

58+

59+ fill : (e : Raw) -> Elab ()

60+

61+ Place a term e with type tc into the focused hole:

62+

63+ ?h : th.e'

64+

65+ and convert it to a guess:

66+

67+ ?h ≈ e:t.e'

68+

69+ and fail if the current focus is not a hole. The type t of the guess is constructed by unifying tc and th, which may instantiate holes that they refer to. Fail if the current focus is not a hole or if unification fails.

70+

71+ This unification can result in the solution of further holes or the establishment of additional unsolved unification constraints.

72+

73+ Example:

74+

75+ .. code-block:: idris

76+

77+ %language ElabReflection

78+

79+ testFn : Nat

80+ testFn = %runElab (do fill `(Z)

81+ solve)

82+

83+ * - apply

84+ - Attempt to apply an operator to fill the current hole, potentially solving arguments by unification.

85+

86+ A hole is established for each argument.

87+

88+ The return value is the list of holes established for the arguments to the function.

89+

90+ Note that not all of the returned hole names still exist, as they may have been solved.

91+

92+ - @ op the term to apply

93+ - @ argSpec - A list of booleans, one for each argument that the operator will be applied to. If true then attempt to solve the argument by unification.

94+

95+ Signature:

96+

97+ apply : (op : Raw) -> (argSpec : List Bool) -> Elab (List TTName)

98+

99+ Example: elaborating an application of a function f that takes one implicit and two explicit arguments might invoke:

100+

101+ apply \`(f) [False, True, True]

102+

103+ Here is an example of an elab script that uses apply to insert the term plus Z (S Z) into a goal of type Nat.

104+

105+ .. code-block:: idris

106+

107+ do [x,y] <- apply `(plus) [False, False]

108+ solve

109+ focus x; fill `(Z); solve

110+ focus y; fill `(S Z); solve

111+

112+ The names of the established holes are returned.

113+

114+ Note: This was added to the original tactic language to allow elaborator reflection.

115+

116+ * - matchApply

117+ - Attempt to apply an operator to fill the current hole, potentially solving arguments by matching.

118+

119+ The return value is the list of holes established for the arguments to the function.

120+

121+ Note that not all of the returned hole names still exist, as they may have been solved.

122+

123+ - @ op the term to apply

124+ - @ argSpec instructions for finding the arguments to the term, where the Boolean states whether or not to attempt to solve the argument by matching.

125+

126+ Signature:

127+

128+ matchApply : (op : Raw) -> (argSpec : List Bool) -> Elab (List TTName)

129+

130+ * - focus

131+ - Move the focus to the specified hole, bringing it to the front of the hole queue. Fails if the hole does not exist.

132+

133+ @ hole the hole to focus on

134+

135+ Signature:

136+

137+ focus : (hole : TTName) -> Elab ()

138+

139+ * - unfocus

140+ - Send the currently-focused hole to the end of the hole queue and focus on the next hole.

141+

142+ Signature:

143+

144+ unfocus : TTName -> Elab ()

145+

146+ * - attack

147+ - Convert a hole to make it suitable for bindings.

148+

149+

150+ .. image:: ../image/attack.png

151+ :width: 152px

152+ :height: 70px

153+ :alt: diagram illustrating attack tactic

154+

155+

156+ The binding tactics require that a hole be directly under its binding, or else the scopes of the generated terms won't make sense. This tactic creates a new hole of the proper form, and points the old hole at it.

157+

158+ Signature:

159+

160+ attack : Elab ()

161+

162+ * - claim

163+ - Establish a new hole binding named n with type t, surrounding the current focus.

164+

165+ Introduce a new hole with a specified name and type.

166+

167+ The new hole will be focused, and the previously-focused hole will be immediately after it in the hole queue. Because this tactic introduces a new binding, you may need to 'attack' first.

168+

169+ Signature:

170+

171+ claim : TTName -> Raw -> Elab ()

172+

173+ * - patvar

174+ - Convert a hole into a pattern variable.

175+

176+ Signature:

177+

178+ patvar : TTName -> Elab ()

179+

180+ * - compute

181+ - Normalise the goal.

182+

183+ Often this is not necessary because normanisation is applied during other tactics.

184+

185+ Signature:

186+

187+ compute : Elab ()

188+

189+ * - normalise

190+ - Normalise a term in some lexical environment

191+

192+ - @ env the environment in which to compute (get one of these from `getEnv`)

193+ - @ term the term to normalise

194+

195+ Signature:

196+

197+ normalise : (env : List (TTName, Binder TT)) -> (term : TT) -> Elab TT

198+

199+ * - whnf

200+ - Reduce a closed term to weak-head normal form

201+

202+ @ term the term to reduce

203+

204+ Signature:

205+

206+ whnf : (term : TT) -> Elab TT

207+

208+ * - convertsInEnv

209+ - Check that two terms are convertible in the current context and in some environment.

210+

211+ - @ env a lexical environment to compare the terms in (see `getEnv`)

212+ - @ term1 the first term to convert

213+ - @ term2 the second term to convert

214+

215+ Signature:

216+

217+ convertsInEnv : (env : List (TTName, Binder TT)) -> (term1, term2 : TT) -> Elab ()

218+

219+ * - converts

220+ - Check that two terms are convertable in the current context and environment

221+

222+ - @ term1 the first term to convert

223+ - @ term2 the second term to convertconverts : (term1, term2 : TT) -> Elab ()

224+

225+ converts term1 term2 = convertsInEnv !getEnv term1 term2

226+

227+ * - getSourceLocation

228+ - Find the source context for the elaboration script

229+

230+ Signature:

231+

232+ getSourceLocation : Elab SourceLocation

233+

234+ * - sourceLocation

235+ - Attempt to solve the current goal with the source code

236+

237+ locationsourceLocation : Elab ()

238+

239+ .. code-block:: idris

240+

241+ sourceLocation = do loc <- getSourceLocation

242+ fill (quote loc)

243+ solve

244+

245+ * - currentNamespace

246+ - Get the current namespace at the point of tactic execution. This allows scripts to define top-level names conveniently.

247+

248+ The namespace is represented as a reverse-order list of strings, just as in the representation of names.

249+

250+ Signature:

251+

252+ currentNamespace : Elab (List String)

253+

254+ * - rewriteWith

255+ - Attempt to rewrite the goal using an equality.

256+

257+ The tactic searches the goal for applicable subterms, and constructs a context for `replace` using them. In some cases, this is not possible, and `replace` must be called manually with an appropriate context.

258+

259+ Because this tactic internally introduces a `let` binding, it requires that the hole be immediately under its binder (use 'attack' if it might not be).

260+

261+ Signature:

262+

263+ rewriteWith : Raw -> Elab ()

264+

265+ * - resolveTC

266+ - Attempt to solve the current goal with an interface dictionary

267+

268+ @ fn the name of the definition being elaborated (to prevent Idris from looping)

269+

270+ Signature:

271+

272+ resolveTC : (fn : TTName) -> Elab ()

273+

274+ * - search

275+ - Use Idris's internal proof search.

276+

277+ Signature:

278+

279+ search : Elab ()

280+

281+ * - search'

282+ - Use Idris's internal proof search, with more control.

283+

284+ - @ depth the search depth

285+ - @ hints additional names to try

286+

287+ Signature:

288+

289+ search' : (depth : Int) -> (hints : List TTName) -> Elab ()

290+

291+ * - operatorFixity

292+ - Look up the declared fixity for an operator.

293+

294+ The lookup fails if the operator does not yet have a fixity or if the string is not a valid operator.

295+

296+ @ operator the operator string to look up

297+

298+ Signature:

299+

300+ operatorFixity : (operator : String) -> Elab Fixity

301+

302+ * - debug

303+ - Halt elaboration, dumping the internal state for inspection.

304+

305+ This is intended for elaboration script developers, not for end-users. Use `fail` for final scripts.

306+

307+ Signature:

308+

309+ debug : Elab a

310+

311+ If 'debug' is not the last tactic then make sure its type is sufficiently constrained. In particular, its type is Elab a, but there's no way for Idris to find out which type was meant for a. This can be fixed by either writing an explicit type (e.g. debug {a = ()}) or by using a helper that constrains the type (such as simple in Pruviloj, e.g. simple debug as a line).

312+

313+ .. code-block:: idris

314+

315+ %language ElabReflection

316+

317+ idNat : Nat -> Nat

318+ idNat = %runElab (do intro `{{x}}

319+ debug {a = ()}

320+ fill (Var `{{x}})

321+ solve)

322+

323+ * - debugMessage

324+ - Halt elaboration, dumping the internal state and displaying a message.

325+

326+ This is intended for elaboration script developers, not for end-users. Use `fail` for final scripts.

327+

328+ @ msg the message to display

329+

330+ Signature:

331+

332+ debugMessage : (msg : List ErrorReportPart) -> Elab a

333+

334+ If 'debugMessage' is not the last tactic then make sure its type is sufficiently constrained. In particular, its type is Elab a, but there's no way for Idris to find out which type was meant for a. This can be fixed by either writing an explicit type (e.g. debugMessage [TextPart "message"] {a = ()}) or by using a helper that constrains the type (such as simple in Pruviloj, e.g. simple debug as a line).

335+

336+ .. code-block:: idris

337+

338+ %language ElabReflection

339+ idNat : Nat -> Nat

340+ idNat = %runElab (do intro `{{x}}

341+ debugMessage [TextPart "error message"] {a = ()}

342+ fill (Var `{{x}})

343+ solve)

344+

345+ * - metavar

346+ - Create a new top-level metavariable to solve the current hole.

347+

348+ @ name the name for the top-level variable

349+

350+ Signature:

351+

352+ metavar : (name : TTName) -> Elab ()

353+

354+ * - runElab

355+ - Recursively invoke the reflected elaborator with some goal.

356+

357+ The result is the final term and its type.

358+

359+ Signature:

360+

361+ runElab : Raw -> Elab () -> Elab (TT, TT)

362+

363+

364+Read and Write State

365+--------------------

366+

367+.. list-table::

368+ :widths: 10 30

369+ :stub-columns: 1

370+

371+ * - getEnv

372+ - Look up the lexical binding at the focused hole. Fails if no holes are present.

373+

374+ Signature:

375+

376+ getEnv : Elab (List (TTName, Binder TT))

377+

378+ * - getGoal

379+ - Get the name and type of the focused hole. Fails if not holes are present.

380+

381+ Signature:

382+

383+ getGoal : Elab (TTName, TT)

384+

385+ * - getHoles

386+ - Get the hole queue, in order.

387+

388+ Signature:

389+

390+ getHoles : Elab (List TTName)

391+

392+ * - getGuess

393+ - If the current hole contains a guess, return it. Otherwise, fail.

394+

395+ Signature:

396+

397+ getGuess : Elab TT

398+

399+ * - lookupTy

400+ - Look up the types of every overloading of a name.

401+

402+ Signature:

403+

404+ lookupTy : TTName -> Elab (List (TTName, NameType, TT))

405+

406+ * - lookupTyExact

407+ - Get the type of a fully-qualified name. Fail if it doesn't resolve uniquely.

408+

409+ Signature:

410+

411+ lookupTyExact : TTName -> Elab (TTName, NameType, TT)

412+

413+ * - lookupDatatype

414+ - Find the reflected representation of all datatypes whose names are overloadings of some name.

415+

416+ Signature:

417+

418+ lookupDatatype : TTName -> Elab (List Datatype)

419+

420+ * - lookupDatatypeExact

421+ - Find the reflected representation of a datatype, given its fully-qualified name. Fail if the name does not uniquely resolve to a datatype.

422+

423+ Signature:

424+

425+ lookupDatatypeExact : TTName -> Elab Datatype

426+

427+ * - lookupFunDefn

428+ - Find the reflected function definition of all functions whose names are overloadings of some name.

429+

430+ Signature:

431+

432+ lookupFunDefn : TTName -> Elab (List (FunDefn TT))

433+

434+ * - lookupFunDefnExact

435+ - Find the reflected function definition of a function, given its fully-qualified name. Fail if the name does not uniquely resolve to a function.

436+

437+ Signature:

438+

439+ lookupFunDefnExact : TTName -> Elab (FunDefn TT)

440+

441+ * - lookupArgs

442+ - Get the argument specification for each overloading of a name.

443+

444+ Signature:

445+

446+ lookupArgs : TTName -> Elab (List (TTName, List FunArg, Raw))

447+

448+ * - lookupArgsExact

449+ - Get the argument specification for a name. Fail if the name does not uniquely resolve.

450+

451+ Signature:

452+

453+ lookupArgsExact : TTName -> Elab (TTName, List FunArg, Raw)

454+

455+ * - check

456+ - Attempt to type-check a term, getting back itself and its type.

457+

458+ - @ env the environment within which to check the type

459+ - @ tm the term to check

460+

461+ Signature:

462+

463+ check : (env : List (TTName, Binder TT)) -> (tm : Raw) -> Elab (TT, TT)

464+

465+Error Handling

466+--------------

467+

468+.. list-table::

469+ :widths: 10 30

470+ :stub-columns: 1

471+

472+ * - tryCatch

473+ - `tryCatch t (\err => t')` will run `t`, and if it fails, roll back the elaboration state and run `t'`,

474+ but with access to the knowledge of why `t` failed.

475+

476+ Signature:

477+

478+ tryCatch : Elab a -> (Err -> Elab a) -> Elab a

479+

480+ .. code-block:: idris

481+

482+ %language ElabReflection

483+

484+ f : Err -> Elab ()

485+ f (Msg _) = fill `("message error")

486+ f (CantUnify _ _ _ _ _ _) = fill `("unification error")

487+ f _ = fill `("other")

488+

489+ s2 : String

490+ s2 = %runElab (do tryCatch (fill `(True)) f ; solve)

491+

492+ * - fail

493+ - Halt elaboration with an error

494+

495+ Signature:

496+

497+ fail : List ErrorReportPart -> Elab a

498+

499+ Note: we may need to make sure the return type 'a' is sufficiently constrained. If required add an explicit type {a = ()}.

500+

501+ Below is some code which includes 'fail'. This will always fail but we could replace 'True' with some more useful condition.

502+

503+ .. code-block:: idris

504+

505+ %language ElabReflection

506+

507+ id1 : Elab ()

508+ id1 = do

509+ intro `{{x}}

510+ fill (Var `{{x}})

511+ if True

512+ then

513+ fail [TextPart "put error message here"]

514+ else

515+ solve

516+

517+ idNat : Nat -> Nat

518+ idNat = %runElab id1

docs/elaboratorReflection/tactics.rstnew file+430

@@ -0,0 +1,430 @@

1+Elaborator Reflection - Tactics

2+===============================

3+

4+The Idris part of the code for elaborator reflection is in

5+Elab.idr `<https://github.com/idris-lang/Idris-dev/blob/master/libs/prelude/Language/Reflection/Elab.idr>`_

6+Before looking at the Elab monad we need to know how to construct terms.

7+

8+

9+Proof State

10+-----------

11+

12+The terminology 'Proof State' is used by analogy to proof assistants but, as used here, it's really more of a metaprogramming state.

13+

14+Tactics operate on the proof state. The proof state contains various pieces of information, at this stage, the important ones for us are:

15+

16+- A hole queue - This contains a list of the names of the holes used in the proof term. The solution to each hole may depend on the other holes. For more information about holes and guesses see `Dependently Typed Functional Programs and their Proofs by McBride 1999`_.

17+- A goal type - The type of the term that is under construction for the current goal.

18+- A possibly incomplete proof term, which is being calculated and should be the goal type at the end of elaboration.

19+- Context - A collection of open unification problems, representing recoverable failures of unification that may yet unify once more variables are solved.

20+

21+There are many other pieces of information in the proof state such as the names used , such as the bodies of case blocks that need to be elaborated.but, for now, we will leave the system to handle these.

22+

23+.. image:: ../image/elabProofState.png

24+ :width: 283px

25+ :height: 232px

26+

27+Names TTName

28+------------

29+

30+Names in an Idris program are evaluated at runtime but sometimes a 'variable name' is needed, which can be referred to as an unevaluated symbol.

31+The names used in terms have different constructors depending on their type:

32+

33++---------------------------+-----------------------------------------------+

34+| UN String | A user-provided name |

35++---------------------------+-----------------------------------------------+

36+| NS (UN "foo") ["B", "A"]) | A name in some namespace |

37++---------------------------+-----------------------------------------------+

38+| MN Int String | Machine-chosen names |

39++---------------------------+-----------------------------------------------+

40+| SN SpecialName | Special names, to make conflicts impossible |

41+| | and language features predictable |

42++---------------------------+-----------------------------------------------+

43+

44+

45+A user defined name can be constructed like this:

46+

47+.. code-block:: idris

48+

49+ Idris> UN "x"

50+ UN "x" : TTName

51+

52+.. code-block:: idris

53+

54+ Idris> NS (UN "x") ["b","a"]

55+ NS (UN "x") ["b", "a"] : TTName

56+

57+.. list-table:: machine-chosen names

58+

59+ * - A machine-chosen name needs to be generated within an Elab monad (see below for details) and is unique within that monad. This produced: {abc_140}{abc_141} so although gensym "abc" was called twice each one had a different integer:

60+ - example of unique names:

61+

62+ .. code-block:: idris

63+

64+ implementation Show TTName where

65+ show (UN s) = "`{{"++s++"}}"

66+ show (NS t a) = "{"++(show t)++

67+ "."++(show a)++"}"

68+ show (MN i s) = "{"++s++"_"++(show i)++"}"

69+ show (SN sn) = "TTName special name"

70+

71+ showGensym : String

72+ showGensym = %runElab (do

73+ debugMessage [TextPart (

74+ show !(gensym "abc") ++

75+ show !(gensym "abc")

76+ )]

77+ )

78+

79+Quasiquotation

80+--------------

81+

82+Since names are used frequently in elaborator reflection there is a shortcut for constructing them:

83+

84+.. list-table::

85+

86+ * - An unresolved variable "x" is wrapped in backtick and double braces:

87+ - .. code-block:: idris

88+

89+ Idris> `{{x}}

90+ UN "x" : TTName

91+

92+

93+ * - Single braces are used for existing variables:

94+ - .. code-block:: idris

95+

96+ Idris> `{x}

97+ No such variable x

98+ Idris> :let x=2

99+ Idris> `{x}

100+ UN "x" : TTName

101+

102+

103+ * - brackets are used for an expression:

104+

105+ here type is inferable

106+ - .. code-block:: idris

107+

108+ Idris> :let a=2

109+ Idris> `(a)

110+ P Ref (UN "a") (TConst (AType (ATInt ITBig))) : TT

111+

112+

113+ * - Expression with explicit type:

114+ - .. code-block:: idris

115+

116+ Idris> `(a:Integer)

117+ P Ref (UN "a") (TConst (AType (ATInt ITBig))) : TT

118+

119+

120+ * - If we want the value we can escape from quasiquotation by using anti-quotation (tilde)

121+ - .. code-block:: idris

122+

123+ Idris> `(~a)

124+ 2 : Integer

125+

126+quasiquotation summary:

127+

128++------------+-----------+----------------------------------------------------------+

129+| |Reification| |

130++============+===========+==========================================================+

131+| \`{{n}} | TTName | Use for new names. Unresolved quotation of the name n. |

132++------------+-----------+----------------------------------------------------------+

133+| \`{n} | TTName | Use for existing names. Resolved quotation of the name |

134+| | | n. n is a reference to a unique name in scope. |

135++------------+-----------+----------------------------------------------------------+

136+| \`(e) | | expression e for which a type is inferable. |

137++------------+-----------+----------------------------------------------------------+

138+| \`(e:t) | | expression e with a given type e. |

139++------------+-----------+----------------------------------------------------------+

140+| ~a | | anti-quotation - sub region which can be evaluated rather|

141+| | | than quoted. |

142++------------+-----------+----------------------------------------------------------+

143+|(Var\`{{x}})| Raw | |

144++------------+-----------+----------------------------------------------------------+

145+

146+TT

147+--

148+

149+There is a notation for a term in TT as it is being constructed (based on a BNF-like grammar), this is used for example in the debug output, it is a compact way to see the state of the term so it is used here.

150+So internally the program is stored as a tree structure using the following syntax:

151+

152++------------+-------+-------------+---------------------------------------------+

153+| | | Syntax | More Information |

154++============+=======+=============+=============================================+

155+| term | | t | |

156++------------+-------+-------------+---------------------------------------------+

157+| binding | | b | |

158++------------+-------+-------------+---------------------------------------------+

159+| constant | t ::= | c | |

160++------------+-------+-------------+---------------------------------------------+

161+| variable | t ::= | x | |

162++------------+-------+-------------+---------------------------------------------+

163+| variable | t ::= | b.t | so a dot '.' tells us this is some sort of |

164+| binding | | | binding. |

165++------------+-------+-------------+---------------------------------------------+

166+| application| t ::= | t t | As with Idris, juxtaposition indicates |

167+| | | | function application. Note: the same symbol |

168+| | | | 't' is used for both terms, this does not |

169+| | | | imply they are the same term. |

170++------------+-------+-------------+---------------------------------------------+

171+| Type | t ::= | T | |

172+| constructor| | | |

173++------------+-------+-------------+---------------------------------------------+

174+| Data | t ::= | C | |

175+| constructor| | | |

176++------------+-------+-------------+---------------------------------------------+

177+| function | b::= | λ c:t | colon ':' separates parameters from body of |

178+| | | | binding. |

179++------------+-------+-------------+---------------------------------------------+

180+| let binding| b::= | let\|-> t:t | |

181++------------+-------+-------------+---------------------------------------------+

182+| function | b::= | ∀ x:t | |

183++------------+-------+-------------+---------------------------------------------+

184+| Type | c::= | \*i | The universe hierarchy is usually handled |

185+| universe | | | automatically so we can just use\* for the |

186+| | | | type of types. |

187++------------+-------+-------------+---------------------------------------------+

188+| integer | c:== | i | |

189+| literal | | | |

190++------------+-------+-------------+---------------------------------------------+

191+|integer type| c:== | Integer | |

192++------------+-------+-------------+---------------------------------------------+

193+| string | c:== | s | |

194+| literal | | | |

195++------------+-------+-------------+---------------------------------------------+

196+| string type| c:== | String | |

197++------------+-------+-------------+---------------------------------------------+

198+|focused hole| | ?x : t | Conor McBride 1999 thesis. |

199++------------+-------+-------------+---------------------------------------------+

200+| guess | | ?x ≈ t : t | Conor McBride 1999 thesis. |

201++------------+-------+-------------+---------------------------------------------+

202+

203+Sometimes the part of the term in focus is underlined.

204+

205+Reflection of the well typed core language

206+

207+.. code-block:: idris

208+

209+ data TT =

210+ ||| A reference to some name (P for Parameter)

211+ P NameType TTName TT |

212+ ||| de Bruijn variables

213+ V Int |

214+ ||| Bind a variable

215+ Bind TTName (Binder TT) TT |

216+ ||| Apply one term to another

217+ App TT TT |

218+ ||| Embed a constant

219+ TConst Const |

220+ ||| Erased terms

221+ Erased |

222+ ||| The type of types along (with universe constraints)

223+ TType TTUExp |

224+ ||| Alternative universes for dealing with uniqueness

225+ UType Universe |

226+

227+TT stores local bound variables using De Bruijn index, when working in Idris this does not concern the user because string names are used for variables. Converting bound variables internally to index values means that the same variable name can be used, in different lambda terms, without ambiguity and without the need for α-substitution.

228+De Bruijn index which is a integer where:

229+

230+- 0=inside current (inner) lambda term

231+- 1= next outer lambda term

232+- 2= next outer and so on

233+

234+Raw

235+---

236+

237+Raw is similar to TT except it is used before types are known. The types should be resolved by the type checker.

238+

239+.. code-block:: idris

240+

241+ data Raw =

242+ ||| Variables, global or local

243+ Var TTName |

244+ ||| Bind a variable

245+ RBind TTName (Binder Raw) Raw |

246+ ||| Application

247+ RApp Raw Raw |

248+ ||| The type of types

249+ RType |

250+ ||| Alternative universes for dealing with uniqueness

251+ RUType Universe |

252+ ||| Embed a constant

253+ RConstant Const |

254+

255+Expression Syntax

256+-----------------

257+

258+There is a way of notating expressions such as those used in the proof state (example: goal type and proof terms) which is reasonably standard in the papers written about this subject.

259+

260+This notation is not entered directly by metaprogrammers but it is seen, for example in debug output. So this notation is explained here because it is useful to be familiar with it.

261+

262+The notation assumes right-associativity, in the absence of brackets, the term to the right binds more tightly than the one on the left.

263+So, for nested lambda terms:

264+

265++---------------+--------+-------------------+

266+| λ a . λ b . f | means | λ a .( λ b . f) |

267++---------------+--------+-------------------+

268+

269+and the same for function application:

270+

271++---------------+--------+-------------------+

272+| f g x | means | f (g x) |

273++---------------+--------+-------------------+

274+

275+In contrast, in lambda calculus, function application is usually regarded as left-associative,

276+Here are some typical examples of the notation used for expressions:

277+

278++-----------------------+

279+| ? {hole_0} . {hole_0} |

280++-----------------------+

281+

282+The term, to be derived, may start off in this state following something like this:

283+

284+.. code-block:: idris

285+

286+ myScript : Elab ()

287+ myScript= do

288+

289+The dot '.' tells us this is some sort of binding.

290+

291++----------------------------------------------+

292+| ?{hole_0} ≈ ? {hole_2} . {hole_2} . {hole_0} |

293++----------------------------------------------+

294+

295+This is a slightly more complicated example arising from:

296+

297+.. code-block:: idris

298+

299+ idNat : Nat -> Nat

300+ idNat = %runElab (do

301+

302+This introduces a guess that hole_0 = hole_2 .

303+

304++----------------------------------------------------+

305+| ?{hole_0} ≈ λ x . ? {hole_2} . {hole_2} . {hole_0} |

306++----------------------------------------------------+

307+

308+Following on from the previous example a lambda function is introduced like this:

309+

310+.. code-block:: idris

311+

312+ intro `{{x}}

313+

314+So now the expression is wrapped in a lambda binding.

315+

316++-------------------------------------------------------+

317+| ?{hole_0} ≈ λ x . ?{hole_2} ≈ x . {hole_2} . {hole_0} |

318++-------------------------------------------------------+

319+

320+Following on, we can use the fill tactic like this:

321+

322+.. code-block:: idris

323+

324+ fill (Var `{{x}})

325+

326+which introduces another guess.

327+

328++--------------------------------+

329+| ?{hole_0} ≈ λ x . x . {hole_0} |

330++--------------------------------+

331+

332+The solve tactic completes the proof

333+

334+Binders

335+-------

336+

337+Here we look at each tactic in turn to see how they affect the proof state.

338+

339+Introduction tactics for binders. The binder types are:

340+

341+- lambda function (intro)

342+- dependent function (forall)

343+- let (letBind)

344+- pattern (patbind)

345+

346+A precondition of these tactics is that the focused hole is of the form:

347+

348++-----------+

349+| ?h : t.h |

350++-----------+

351+

352+that is, that the body of its scope consists directly of a reference to the hole-bound variable. If a hole binder were of the form:

353+

354++--------------------+

355+| ?h : t1 -> t2.f h |

356++--------------------+

357+

358+and a tactic such as

359+

360++------------------+

361+| intro \`{{x}} |

362++------------------+

363+

364+were applied, the result would be the term

365+

366++---------------------------+

367+| ?h : t2 . λ x:t1. f h |

368++---------------------------+

369+

370+However this would cause the application of f to be ill-typed, as it expects an argument of type t1->t2, not an argument of type t2. Additionally, some binding tactics require that t, the type of the hole h, have a specific form, because the binder to be established may have a typing rule associated with it.

371+

372+.. list-table:: Binders

373+ :widths: 10 30

374+ :stub-columns: 1

375+

376+ * - intro

377+ - Introduce a lambda binding around the current hole and focus on the body.

378+

379+ Requires that the hole be in binding form (use 'attack' if it might not be).

380+

381+ @ n the name to use for the argument.

382+

383+ Signature:

384+

385+ intro : (n : TTName) -> Elab ()

386+

387+ Result

388+

389+ λn:t1.?h:[n/x]t2.h

390+

391+ * - intro'

392+ - Introduce a lambda binding around the current hole and focus on the body, using the name provided by the type of the hole.

393+

394+ Requires that the hole be immediately under its binder (use 'attack' if it might not be).

395+

396+ Signature:

397+

398+ intro' : Elab ()

399+

400+ * - forall

401+ - Introduce a dependent function type binding into the current hole, and focus on the body. Requires that the hole be immediately under its binder

402+

403+ (use 'attack' if it might not be).

404+

405+ Signature:

406+

407+ forall : TTName -> Raw -> Elab ()

408+

409+ * - patbind

410+ - Introduce a new pattern binding. Requires that the hole be immediately under its binder (use 'attack' if it might not be).

411+

412+ Signature:

413+

414+ patbind : TTName -> Elab ()

415+

416+ * - letbind

417+ - Introduce a new let binding.

418+

419+ Requires that the hole be immediately under its binder (use 'attack' if it might not be).

420+

421+ - @ n the name to let bind

422+ - @ ty the type of the term to be let-bound

423+ - @ tm the term to be bound

424+

425+ Signature:

426+

427+ letbind : (n : TTName) -> (ty, tm : Raw) -> Elab ()

428+

429+.. target-notes::

430+.. _`Dependently Typed Functional Programs and their Proofs by McBride 1999`: https://www.era.lib.ed.ac.uk/handle/1842/374

docs/faq/faq.rst+2−2

@@ -37,7 +37,7 @@ Is there some documentation for the standard lib? List of functions?

3737=====================================================================

3838

3939API documentation for the shipped packages is listed on `the

40−documentation page <http://www.idris-lang.org/documentation/>`_.

40+documentation page <https://www.idris-lang.org/documentation/>`_.

4141

4242Unfortunately, the default prelude and shipped packages for `Idris`

4343are not necessarily complete with regards to documentation. Other

@@ -310,7 +310,7 @@ better and it will make sense to revisit this. For now, however, Idris will not

310310be offering arbitrary Unicode symbols in operators.

311311

312312This seems like an instance of `Wadler's

313−Law <http://www.haskell.org/haskellwiki/Wadler%27s_Law>`__ in action.

313+Law <https://www.haskell.org/haskellwiki/Wadler%27s_Law>`__ in action.

314314

315315This answer is based on Edwin Brady's response in the following

316316`pull request <https://github.com/idris-lang/Idris-dev/pull/694#issuecomment-29559291>`_.

docs/guides/index.rst+1−1

@@ -12,7 +12,7 @@ Tutorials submitted by community members.

1212 Idris Community* has waived all copyright and related or neighboring

1313 rights to Documentation for Idris.

1414

15− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

15+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1616

1717

1818.. toctree::

docs/guides/theorem-prover.rst+1−1

@@ -22,7 +22,7 @@ We will be given the following prompt, in future releases the version string wil

2222 ____ __ _

2323 / _/___/ /____(_)____

2424 / // __ / ___/ / ___/ Version 0.9.18.1

25− _/ // /_/ / / / (__ ) http://www.idris-lang.org/

25+ _/ // /_/ / / / (__ ) https://www.idris-lang.org/

2626 /___/\__,_/_/ /_/____/ Type :? for help

2727

2828 Idris is free software with ABSOLUTELY NO WARRANTY.

docs/guides/type-providers-ffi.rst+1−1

@@ -3,7 +3,7 @@ Type Providers in Idris

33***********************

44

55`Type providers in Idris

6−<http://www.davidchristiansen.dk/pubs/dependent-type-providers.pdf>`__

6+<https://www.davidchristiansen.dk/pubs/dependent-type-providers.pdf>`__

77are simple enough, but there are a few caveats to using them that it

88would be worthwhile to go through the basic steps. We also go over

99foreign functions, because these will often be used with type

docs/image/README.mdnew file+16

@@ -0,0 +1,16 @@

1+Many of the images in this directory have two files with the same name but a different extension:

2+

3+* The SVG file, being vector graphics, is best for drawing and modifying.

4+* The PNG file, being raster graphics, gives more consistent rendering.

5+

6+The image has therefore been generated as an SVG file and then exported to the PNG file.

7+

8+So, if you need to modify an image, I suggest the following sequence:

9+

10+* Edit the SVG file using a suitable editor (I use Inkscape).

11+* Export the changes to the PNG file, overwriting the old version.

12+* upload both files.

13+

14+Note, when exporting in Inkscape:

15+* Select everything first, this stops an enormous boundary being exported.

16+* After selecting the file to export to and clicking OK, don't forget to click on export button as well.

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767+ sodipodi:role="line">module Text.Parser</tspan></text>

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801+ <text

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803+ style="font-style:normal;font-weight:normal;font-size:10.58333302px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:none;stroke-width:0.26458332"

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840+ y="137.82295"

841+ x="127.13572"

842+ id="tspan1051"

843+ sodipodi:role="line">module Idris.Syntax</tspan></text>

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868+ xml:space="preserve"><tspan

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870+ y="192.48962"

871+ x="157.95586"

872+ id="tspan1079"

873+ sodipodi:role="line">SExp</tspan></text>

874+ <text

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879+ x="98.954155"

880+ style="font-style:normal;font-weight:normal;font-size:10.58333302px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#008000;fill-opacity:1;stroke:none;stroke-width:0.26458332"

881+ xml:space="preserve"><tspan

882+ style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:4.23333311px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#008000;stroke-width:0.26458332"

883+ y="192.75421"

884+ x="98.954155"

885+ id="tspan1087"

886+ sodipodi:role="line">module Idris.IDEMode.Parser</tspan></text>

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905+ y="58.610428"

906+ x="23.54781"

907+ id="tspan1099"

908+ sodipodi:role="line">module Idris.REPL</tspan></text>

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937+ style="font-style:normal;font-weight:normal;font-size:10.58333302px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:none;stroke-width:0.26458332"

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942+ y="104.70191"

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944+ id="tspan948"

945+ sodipodi:role="line">module Core.Core</tspan></text>

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967+ style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:3.52777767px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#000000;stroke-width:0.26458332">error messages</tspan></text>

968+ <text

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999+ y="95.970665"

1000+ x="79.841362"

1001+ sodipodi:role="line"

1002+ id="tspan968">Representation of expressions ready</tspan><tspan

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1004+ y="100.38039"

1005+ x="79.841362"

1006+ sodipodi:role="line"

1007+ id="tspan974">for compiling: CExp</tspan><tspan

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1009+ y="104.79011"

1010+ x="79.841362"

1011+ sodipodi:role="line"

1012+ id="tspan972">Type erased, explicit case trees</tspan></text>

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1018+ x="22.162193"

1019+ y="73.217979"

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1021+ sodipodi:role="line"

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1024+ y="73.217979"

1025+ style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:4.23333311px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#0000ff;stroke-width:0.26458332">module Idris.CommandLine</tspan></text>

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1044+ y="76.92215"

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1046+ id="tspan982"

1047+ sodipodi:role="line">command line options</tspan></text>

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1057+ y="89.886726"

1058+ x="22.162193"

1059+ id="tspan986"

1060+ sodipodi:role="line">module Idris.Error</tspan></text>

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1118+ style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:4.23333311px;line-height:0.40000001;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#ff0000;stroke-width:0.26458332;">'text' modules are</tspan><tspan

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1121+ y="230.92491"

1122+ style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:4.23333311px;line-height:0.40000001;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#ff0000;stroke-width:0.26458332;"

1123+ id="tspan1475">also in Idris 1</tspan><tspan

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1125+ x="158.75"

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237+ id="tspan973">(&lt;|&gt;) : Recognise c1 -&gt; Recognise c2 -&gt;</tspan><tspan

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docs/index.rst+3−1

@@ -13,7 +13,7 @@ Documentation for the Idris Language

1313 Idris Community* has waived all copyright and related or neighboring

1414 rights to Documentation for Idris.

1515

16− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

16+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1717

1818

1919.. toctree::

@@ -24,5 +24,7 @@ Documentation for the Idris Language

2424 st/index

2525 effects/index

2626 proofs/index

27+ elaboratorReflection/index

28+ parserLibrary/index

2729 reference/index

2830 guides/index

docs/listing/idris-prompt-helloworld.txt+1−1

@@ -2,7 +2,7 @@ $ idris hello.idr

22 ____ __ _

33 / _/___/ /____(_)____

44 / // __ / ___/ / ___/ Version 1.3.2

5− _/ // /_/ / / / (__ ) http://www.idris-lang.org/

5+ _/ // /_/ / / / (__ ) https://www.idris-lang.org/

66 /___/\__,_/_/ /_/____/ Type :? for help

77

88Type checking ./hello.idr

docs/listing/idris-prompt-interp.txt+1−1

@@ -2,7 +2,7 @@ $ idris interp.idr

22 ____ __ _

33 / _/___/ /____(_)____

44 / // __ / ___/ / ___/ Version 1.3.2

5− _/ // /_/ / / / (__ ) http://www.idris-lang.org/

5+ _/ // /_/ / / / (__ ) https://www.idris-lang.org/

66 /___/\__,_/_/ /_/____/ Type :? for help

77

88Type checking ./interp.idr

docs/listing/idris-prompt-start.txt+1−1

@@ -2,7 +2,7 @@ $ idris

22 ____ __ _

33 / _/___/ /____(_)____

44 / // __ / ___/ / ___/ Version 1.3.2

5− _/ // /_/ / / / (__ ) http://www.idris-lang.org/

5+ _/ // /_/ / / / (__ ) https://www.idris-lang.org/

66/___/\__,_/_/ /_/____/ Type :? for help

77

88Idris>

docs/make.bat+1−1

@@ -65,7 +65,7 @@ if errorlevel 9009 (

6565 echo.may add the Sphinx directory to PATH.

6666 echo.

6767 echo.If you don't have Sphinx installed, grab it from

68− echo.http://sphinx-doc.org/

68+ echo.https://www.sphinx-doc.org/

6969 exit /b 1

7070)

7171

docs/parserLibrary/index.rstnew file+24

@@ -0,0 +1,24 @@

1+.. _parserLibrary:

2+

3+########################

4+Lexer and Parser Library

5+########################

6+

7+A tutorial on the lexer and parser library in Idris.

8+

9+.. note::

10+

11+ The documentation for Idris has been published under the Creative

12+ Commons CC0 License. As such to the extent possible under law, *The

13+ Idris Community* has waived all copyright and related or neighboring

14+ rights to Documentation for Idris.

15+

16+ More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

17+

18+.. toctree::

19+ :maxdepth: 1

20+

21+ introduction

22+ lexer

23+ parser

24+ whitespace

docs/parserLibrary/introduction.rstnew file+76

@@ -0,0 +1,76 @@

1+.. _parserLibraryIntro:

2+

3+***************************

4+Parser Library Introduction

5+***************************

6+

7+The parser library can be used to build Idris structures from text. It involves a

8+certain amount of complexity and so it would typically be used for big projects.

9+An example might be a compiler for another language, written in Idris.

10+

11+Of course the parser library can also be used to compile to Idris, this is what

12+is done in Idris 2 and that is what the this library appears to have been

13+written for.

14+

15+So a secondary use for this tutorial would be to help understanding the internal

16+workings of Idris 2.

17+

18+The parser library is used in a similar way to Parsec which is a library for

19+writing parsers in Haskell. It is based on higher-order parser combinators, so a

20+complicated parser can be made out of many smaller ones.

21+

22+.. list-table::

23+

24+ * - This is a two stage process:

25+ - Lexer - This takes the input string and turns it into a list of Tokens.

26+ - Parser - This takes the list of tokens and outputs the code.

27+

28+ - .. image:: ../image/parserTopLevel.png

29+ :width: 307px

30+ :height: 76px

31+ :alt: diagram illustrating these stages of lexer and parser

32+

33+The advantage of using two stages, like this, is that things like whitespace and

34+comments don't need to be considered in every parser rule.

35+

36+The Idris parser library differs from Parsec in that you need to say, in the

37+Recogniser, whether a rule is guaranteed to consume input. This means that the

38+Idris type system prevents the construction of recognisers/rules that can't

39+consume the input.

40+

41+The Lexer is similar but works at the level of characters rather than tokens, and

42+you need to provide a TokenMap which defines how to build a token from

43+a string when a rule is matched.

44+

45+The following pages contain a tutorial for the :ref:`parserLibraryLexer` and a

46+tutorial for the :ref:`parserLibraryParser`. These tutorials have a running

47+example of a parser for integer expressions. This is a very simple example, there

48+may be easier ways to do something so simple, but it illustrates some of the

49+principles.

50+

51+Parser Library and Idris 2

52+--------------------------

53+

54+The parser library, in Idris 1, is almost the same as the code that the Idris 2

55+parser is built on. Even if you only want to use the Idris 1 parser library it

56+is useful to look at the code in the Idris 2 compilers to see how the library

57+can be used.

58+

59+Idris 2 has at least 3 compilers:

60+

61+- IDEMode - complies to SExp which is a Lisp-like structure used to communicate

62+ with external editors like Emacs and Vim.

63+- Idris.Parser - This is the main compiler which compiles from a file to

64+ PTerm (and eventually TT structure).

65+- REPL - compiles input from the command line.

66+

67+The following diagram is my first attempt to work out how some of the modules in

68+Idris 2 fit together (with a few of the dependencies between them shown). The

69+Idris 1 library is based on the modules at the bottom of the diagram (shown

70+in red).

71+

72+.. image:: ../image/parserModules.png

73+ :width: 460px

74+ :height: 496px

75+ :alt: diagram illustrating these stages of lexer and parser

76+

docs/parserLibrary/lexer.rstnew file+288

@@ -0,0 +1,288 @@

1+.. _parserLibraryLexer:

2+

3+Lexer

4+=====

5+

6+The lexer is run by calling the 'lex' function in the Text.Lexer.Core

7+module:

8+

9+.. code-block:: idris

10+

11+ lex : TokenMap a -> String -> (List (TokenData a), (Int, Int, String))

12+

13+.. list-table::

14+

15+ * - This function takes a String and returns a list of tokens. With the

16+ tokens we have indexes back to the original string which can be used

17+ in error messages:

18+

19+ - .. image:: ../image/tokenise.png

20+ :width: 330px

21+ :height: 73px

22+ :alt: diagram illustrating these stages of lexer

23+

24+TokenMap

25+--------

26+

27+In order to construct this list of tokens we need:

28+

29+- A way to recognise the tokens in the input string.

30+- A way to construct these individual tokens.

31+

32+This is given by the TokenMap which is a list of pairs containing

33+this information:

34+

35+.. code-block:: idris

36+

37+ (Lexer, String -> tokenType)

38+

39+So for each Lexer in the list, if a substring in the input matches, run

40+the associated function to produce a token of type ``tokenType``

41+

42+.. list-table::

43+

44+ * - from Text.Lexer.Core

45+ : https://github.com/idris-lang/Idris-dev/blob/master/libs/contrib/Text/Lexer/Core.idr

46+

47+ - .. code-block:: idris

48+

49+ TokenMap : (tokenType : Type) -> Type

50+ TokenMap tokenType = List (Lexer, String -> tokenType)

51+

52+ * - We can create a tokenMap by using a function like this:

53+

54+ - .. code-block:: idris

55+

56+ myTokenMap : TokenMap Token

57+ myTokenMap = [(is 'a',CharLit)]

58+

59+Once we have a TokenMap we can use it to lex many strings.

60+

61+Recognisers

62+-----------

63+

64+The first part of each entry in the TokenMap is the recogniser.

65+

66+A simple recogniser is 'Pred' which uses a predicate (Char -> Bool) to

67+test whether to accept the character. It can be constructed using the

68+'is' function:

69+

70+.. code-block:: idris

71+

72+ *parserEx> is 'a'

73+ Pred (\ARG =>

74+ intToBool (prim__eqChar ARG 'a'))

75+ : Recognise True

76+

77+More complicated structures can be recognised as tokens, this is done using

78+the combinator structure of recognisers. This allows recognisers to be

79+combined, for example,

80+

81+.. list-table::

82+

83+ * - ``<+>`` means sequence two recognisers. If either consumes a character,

84+ the sequence is guaranteed to consume a character.

85+

86+ - .. code-block:: idris

87+

88+ *parserEx> is 'a' <+> is 'b'

89+ SeqEat (Pred (\ARG => intToBool (prim__eqChar ARG 'a')))

90+ (Delay (is 'b')) : Recognise True

91+

92+ * - ``<|>`` means if both consume, the combination is guaranteed

93+ to consumer a character:

94+

95+ - .. code-block:: idris

96+

97+ *parserEx> is 'a' <|> is 'b'

98+ Alt (Pred (\ARG => intToBool (prim__eqChar ARG 'a')))

99+ (Pred (\ARG => intToBool (prim__eqChar ARG 'b')))

100+ : Recognise True

101+

102+This diagram shows the recogniser combinator with some of its constructors:

103+

104+.. image:: ../image/recogniser.png

105+ :width: 487px

106+ :height: 249px

107+ :alt: recogniser data structure

108+

109+A recogniser consumes its input, that is it advances the index to its input

110+string, as it generates the token list. In some cases we don't want this to

111+happen, for instance, we may need to lookahead before consuming the input

112+string.

113+

114+If a recogniser does not consume input there is a danger of an infinite loop.

115+To prevent this the recogniser is dependent on a boolean called 'consumes' which

116+is true if the recogniser is guaranteed to consume at least one character.

117+

118+The constructors of Recognise allow us to ensure that, even though parts of

119+the recogniser may not consume, overall the recogniser will consume.

120+

121+Since 'Recognise True' is more common than 'Recognise False' it is convenient to

122+use 'Lexer' as a type synonym for 'Recognise True'.

123+

124+Whitespace and Comments

125+-----------------------

126+

127+An important reason to have a lexer is to simplify the parser when whitespace

128+or comments are required. Without this the parser would require a match for

129+every combination, with and without, whitespace and comments.

130+

131+In some languages the lexer needs to remove whitespace and comments so that

132+they don't appear in the token list. In some cases whitespace is significant

133+but a single whitespace token can stand for any number of spaces, tabs,

134+carriage returns and so on.

135+

136+In some cases, such as when parsing the Idris language itself, whitespace

137+is important to indicate blocks. In this case we might want to output a

138+start-of-block token when the indent increases and an end-of-block token

139+when the indent decreases.

140+

141+This topic will be discussed more fully on this page

142+:ref:`parserLibraryWhitespace`.

143+

144+Simple Expression Example for Lexer

145+-----------------------------------

146+

147+On this page we will implement a lexer to 'lex' a very simple expression as

148+a running example, on the next page, we will go on to implement a parser for it.

149+

150+First import the lexer and parser code:

151+

152+.. code-block:: idris

153+

154+ module ParserExample

155+

156+ import Text.Lexer

157+ import public Text.Parser.Core

158+ import public Text.Parser

159+

160+Then decide on the tokens that are needed. For this example the idea is to be

161+able to parse simple arithmetic expressions, like this:

162+

163+.. code-block:: idris

164+

165+ 1+(2*3)

166+

167+so we need:

168+

169+- Numbers (for now integer literals are good enough).

170+- Some operators (for now ``+``, ``-`` and ``*`` will do.

171+- Opening and closing Parentheses.

172+

173+We can define these, as tokens, like this:

174+

175+.. code-block:: idris

176+

177+ %default total

178+

179+ public export

180+ data ExpressionToken = Number Integer

181+ | Operator String

182+ | OParen

183+ | CParen

184+ | EndInput

185+

186+It may help with debugging and to implement error messages to

187+implement ``show`` for these tokens:

188+

189+.. code-block:: idris

190+

191+ export

192+ Show ExpressionToken where

193+ show (Number x) = "number " ++ show x

194+ show (Operator x) = "operator " ++ x

195+ show OParen = "("

196+ show CParen = ")"

197+ show EndInput = "end of input"

198+

199+ export

200+ Show (TokenData ExpressionToken) where

201+ show (MkToken l c t) = "line=" ++ show l ++ " col=" ++ show c ++ "tok=" ++ show t

202+

203+The following defines the 'TokenMap' for this example:

204+

205+.. code-block:: idris

206+

207+ ||| integer arithmetic operators plus, minus and multiply.

208+ export

209+ opChars : String

210+ opChars = "+-*"

211+

212+ operator : Lexer

213+ operator = some (oneOf opChars)

214+

215+ toInt' : String -> Integer

216+ toInt' = cast

217+

218+ expressionTokens : TokenMap ExpressionToken

219+ expressionTokens =

220+ [(digits, \x => Number (toInt' x)),

221+ (operator, \x => Operator x),

222+ (is '(' ,\x => OParen),

223+ (is ')' ,\x => CParen)]

224+

225+This specifies the lexer. It gives, for each token, a function to recognise

226+the token type and a function to construct the token.

227+

228+The library module 'Text.Lexer' contains useful functions to help with this.

229+For example, the digits function used above, which reads one or more

230+numeric characters.

231+

232+We can now run the code with various strings to see what output the lexer

233+produces. This is done by calling the 'lex' function with the TokenMap and

234+input string as parameters:

235+

236+.. code-block:: idris

237+

238+ cd Idris-dev/libs/contrib

239+ idris -p contrib parserEx.idr

240+ ____ __ _

241+ / _/___/ /____(_)____

242+ / // __ / ___/ / ___/ Version 1.3.2

243+ _/ // /_/ / / / (__ ) http://www.idris-lang.org/

244+ /___/\__,_/_/ /_/____/ Type :? for help

245+

246+ Idris is free software with ABSOLUTELY NO WARRANTY.

247+ For details type :warranty.

248+ Type checking ./Text/Token.idr

249+ Type checking ./Text/Quantity.idr

250+ Type checking ./Control/Delayed.idr

251+ Type checking ./Data/Bool/Extra.idr

252+ Type checking ./Text/Lexer/Core.idr

253+ Type checking ./Text/Lexer.idr

254+ Type checking ./parserEx.idr

255+

256+ *parserEx> lex expressionTokens "1+2"

257+ ([MkToken 0 0 (Number 1),

258+ MkToken 0

259+ (case fspan (\ARG => not (intToBool (prim__eqChar ARG '\n'))) "1" of

260+ (incol, "") => c + cast (length incol)

261+ (incol, b) => cast (length incol))

262+ (Operator "+"),

263+ MkToken 0

264+ (case fspan (\ARG => not (intToBool (prim__eqChar ARG '\n'))) "+" of

265+ (incol, "") => c + cast (length incol)

266+ (incol, b) => cast (length incol))

267+ (Number 2)],

268+ 0,

269+ case fspan (\ARG => not (intToBool (prim__eqChar ARG '\n'))) "2" of

270+ (incol, "") => c + cast (length incol)

271+ (incol, b) => cast (length incol),

272+ getString (MkStrLen "" 0)) : (List (TokenData ExpressionToken),

273+ Int,

274+ Int,

275+ String)

276+

277+The lexer uses potentially infinite data structures. It has recursive

278+arguments (codata type) so code is lazy. In the output above the indexes

279+have not been computed but we can pick out the tokens:

280+

281+- (Number 1)

282+- (Operator "+")

283+- (Number 2)

284+

285+So the code is working.

286+

287+We can now go ahead and parse this token list. A parser for this example will

288+be constructed on the next page.

docs/parserLibrary/parser.rstnew file+700

@@ -0,0 +1,700 @@

1+.. _parserLibraryParser:

2+

3+Parser

4+======

5+

6+To run the parser we call ``parse``. This requires a grammar and the output

7+from the lexer (which is a list of tokens).

8+

9+.. code-block:: idris

10+

11+ parse : (act : Grammar tok c ty) -> (xs : List tok) ->

12+ Either (ParseError tok) (ty, List tok)

13+

14+If successful this returns 'Right' with a pair of

15+

16+- the parse result.

17+- the unparsed tokens (the remaining input).

18+

19+otherwise it returns 'Left' with the error message.

20+

21+So we need to define the grammar for our parser, this is done using the following

22+'Grammar' data structure. This is a combinator structure, similar in principle

23+to the recogniser combinator for the lexer, which was discussed on the

24+previous page.

25+

26+As with the Recogniser the ``Grammar`` type is dependent on a boolean 'consumes'

27+value which allows us to ensure that complicated ``Grammar`` structures will always

28+consume input.

29+

30+.. code-block:: idris

31+

32+ ||| Description of a language's grammar. The `tok` parameter is the type

33+ ||| of tokens, and the `consumes` flag is True if the language is guaranteed

34+ ||| to be non-empty - that is, successfully parsing the language is guaranteed

35+ ||| to consume some input.

36+ public export

37+ data Grammar : (tok : Type) -> (consumes : Bool) -> Type -> Type where

38+ Empty : (val : ty) -> Grammar tok False ty

39+ Terminal : String -> (tok -> Maybe a) -> Grammar tok True a

40+ NextIs : String -> (tok -> Bool) -> Grammar tok False tok

41+ EOF : Grammar tok False ()

42+

43+ Fail : Bool -> String -> Grammar tok c ty

44+ Commit : Grammar tok False ()

45+ MustWork : Grammar tok c a -> Grammar tok c a

46+

47+ SeqEat : Grammar tok True a -> Inf (a -> Grammar tok c2 b) ->

48+ Grammar tok True b

49+ SeqEmpty : {c1, c2 : Bool} ->

50+ Grammar tok c1 a -> (a -> Grammar tok c2 b) ->

51+ Grammar tok (c1 || c2) b

52+ Alt : {c1, c2 : Bool} ->

53+ Grammar tok c1 ty -> Grammar tok c2 ty ->

54+ Grammar tok (c1 && c2) ty

55+

56+So an example of a grammer type may look something like this:

57+``Grammar (TokenData ExpressionToken) True Integer``.

58+This is a complicated type name and a given parser will need to use it a lot.

59+So to reduce the amount of typing we can use the following type synonym (similar

60+to what is done in Idris 2

61+: https://github.com/edwinb/Idris2/blob/master/src/Parser/Support.idr

62+)

63+

64+.. code-block:: idris

65+

66+ public export

67+ Rule : Type -> Type

68+ Rule ty = Grammar (TokenData ExpressionToken) True ty

69+

70+Parser Example

71+--------------

72+

73+On the previous page we implemented a lexer to 'lex' a very simple expression, on

74+this page we will go on to add a parser for this running example.

75+

76+.. list-table::

77+

78+ * - The syntax we are aiming at is something

79+ like this (expressed in Backus–Naur form (BNF)):

80+ - .. code-block:: idris

81+

82+ <expr> ::= <integer literal>

83+ | <expr>'+'<expr>

84+ | <expr>'-'<expr>

85+ | <expr>'*'<expr>

86+ | '('<expr>')'

87+

88+ <integer literal> ::= <digit>|<integer literal><digit>

89+

90+.. list-table::

91+

92+ * - To start, here is a grammar to parse an integer literal (that is, a

93+ sequence of numeric characters).

94+

95+ - .. code-block:: idris

96+

97+ export

98+ intLiteral : Rule Integer

99+ intLiteral

100+ = terminal (\x => case tok x of

101+ Number i => Just i

102+ _ => Nothing)

103+

104+In order to try this out, here is a temporary function, this calls

105+parse which takes two parameters:

106+

107+- The grammar (in this case intLiteral)

108+- The token list from the lexer.

109+

110+.. code-block:: idris

111+

112+ test1 : String -> Either (ParseError (TokenData ExpressionToken))

113+ (Integer, List (TokenData ExpressionToken))

114+ test1 s = parse intLiteral (fst (lex expressionTokens s))

115+

116+As required, if we pass it a string which is a number literal then it will

117+return the number in the 'Right' option.

118+

119+.. code-block:: idris

120+

121+ *parserEx> test1 "123"

122+ Right (123, []) : Either (ParseError (TokenData ExpressionToken))

123+ (Integer, List (TokenData ExpressionToken))

124+

125+If we pass it a string which is not a number literal then it will return an

126+error message.

127+

128+.. code-block:: idris

129+

130+ *parserEx> test1 "a"

131+ Left (Error "End of input"

132+ []) : Either (ParseError (TokenData ExpressionToken))

133+ (Integer, List (TokenData ExpressionToken))

134+

135+If we pass it a number followed by something else, then it will still be

136+successful, this is because we are not specifically checking for end-of-file.

137+

138+.. code-block:: idris

139+

140+ *parserEx> test1 "123a"

141+ Right (123, []) : Either (ParseError (TokenData ExpressionToken))

142+ (Integer, List (TokenData ExpressionToken))

143+ *parserEx>

144+

145+.. list-table::

146+

147+ * - The ``intLiteral`` function above uses the ``terminal`` function to

148+ construct the grammar

149+ - .. code-block:: idris

150+

151+ ||| Succeeds if running the predicate on the

152+ ||| next token returns Just x, returning x.

153+ ||| Otherwise fails.

154+ export

155+ terminal : (tok -> Maybe a) -> Grammar tok True a

156+ terminal = Terminal

157+

158+This is defined here

159+: https://github.com/idris-lang/Idris-dev/blob/master/libs/contrib/Text/Parser/Core.idr

160+Idris 2 uses a slightly different version which stores an error message like

161+"Expected integer literal" which can be output if the rule fails

162+: https://github.com/edwinb/Idris2/blob/master/src/Text/Parser/Core.idr

163+

164+.. list-table::

165+

166+ * - The 'terminal' function is also used to construct the other

167+ elements of the grammar that we require, for instance,

168+ opening parenthesis:

169+

170+ - .. code-block:: idris

171+

172+ openParen : Rule Integer

173+ openParen = terminal (\x => case tok x of

174+ OParen => Just 0

175+ _ => Nothing)

176+

177+Integer value is not really relevant for parenthesis so ``0`` (zero) is used as

178+a default value.

179+

180+As before, this can be tested with a function like this:

181+

182+.. code-block:: idris

183+

184+ test2 : String -> Either (ParseError (TokenData ExpressionToken))

185+ (Integer, List (TokenData ExpressionToken))

186+ test2 s = parse openParen (fst (lex expressionTokens s))

187+

188+We can see below that it correctly parses an open parenthesis and gives an

189+error for anything else:

190+

191+.. code-block:: idris

192+

193+ *parserEx> test2 "("

194+ Right (0, []) : Either (ParseError (TokenData ExpressionToken))

195+ (Integer, List (TokenData ExpressionToken))

196+ *parserEx> test2 "123"

197+ Left (Error "Unrecognised token"

198+ [MkToken 0

199+ 0

200+ (Number 123)]) : Either (ParseError (TokenData ExpressionToken))

201+ (Integer,

202+ List (TokenData ExpressionToken))

203+

204+Now we have two Grammars we can try combining them. The following test looks

205+for ``openParen`` followed by ``intLiteral``, the two Grammars are combined using

206+``<*>``. The ``map const`` part uses the integer value from the first.

207+

208+The following test is looking for ``(`` followed by a number:

209+

210+.. code-block:: idris

211+

212+ test3 : String -> Either (ParseError (TokenData ExpressionToken))

213+ (Integer, List (TokenData ExpressionToken))

214+ test3 s = parse (map const openParen <*> intLiteral) (fst (lex expressionTokens s))

215+

216+We can see below that ``(`` followed by a number is successfully parsed but, as

217+required, other token lists are not:

218+

219+.. code-block:: idris

220+

221+ *parserEx> test3 "(123"

222+ Right (0, []) : Either (ParseError (TokenData ExpressionToken))

223+ (Integer, List (TokenData ExpressionToken))

224+ *parserEx> test3 "(("

225+ Left (Error "Unrecognised token"

226+ [MkToken 0

227+ (case fspan (\ARG => not (intToBool (prim__eqChar ARG '\n')))

228+ "(" of

229+ (incol, "") => c + cast (length incol)

230+ (incol, b) => cast (length incol))

231+ OParen]) : Either (ParseError (TokenData ExpressionToken))

232+ (Integer, List (TokenData ExpressionToken))

233+

234+ *parserEx> test3 "123"

235+ Left (Error "Unrecognised token"

236+ [MkToken 0

237+ 0

238+ (Number 123)]) : Either (ParseError (TokenData ExpressionToken))

239+ (Integer,

240+ List (TokenData ExpressionToken))

241+ *parserEx> test3 "123("

242+ Left (Error "Unrecognised token"

243+ [MkToken 0 0 (Number 123),

244+ MkToken 0

245+ (case fspan (\ARG => not (intToBool (prim__eqChar ARG '\n')))

246+ "321" of

247+ (incol, "") => c + cast (length incol)

248+ (incol, b) => cast (length incol))

249+ OParen]) : Either (ParseError (TokenData ExpressionToken))

250+ (Integer, List (TokenData ExpressionToken))

251+

252+.. list-table::

253+

254+ * - The closing parenthesis is constructed in the same way.

255+

256+ - .. code-block:: idris

257+

258+ closeParen : Rule Integer

259+ closeParen = terminal (\x => case tok x of

260+ CParen => Just 0

261+ _ => Nothing)

262+

263+.. list-table::

264+

265+ * - Now we can generate a Grammar for an expression inside parenthesis

266+ like this.

267+

268+ - .. code-block:: idris

269+

270+ paren : Rule Integer -> Rule Integer

271+ paren exp = openParen *> exp <* closeParen

272+

273+The use of ``*>`` and ``<*`` instead of ``<*>`` is an easy way to use the integer

274+value from the inner expression.

275+

276+So lets try to use this to define a grammar which recognises either:

277+

278+- An integer literal

279+- An integer literal inside parenthesis

280+- An integer literal inside parenthesis inside parenthesis

281+- ... and so on.

282+

283+.. list-table::

284+

285+ * - This requires a recursively defined structure like this:

286+

287+ - .. code-block:: idris

288+

289+ partial

290+ expr : Rule Integer

291+ expr = intLiteral <|> (paren expr)

292+

293+This is a valid grammar because every time it is called it is guaranteed to

294+consume a token. However, as an Idris structure, it is problematic due to

295+the recursion. Defining it as partial allows it to compile but at runtime

296+we are likely to get a crash with an (unhelpful) error message like

297+``killed by signal 11``.

298+

299+So a better method is to use ``do`` notation as described in the following

300+section.

301+

302+Monadic Combinator

303+------------------

304+

305+In addition to ``<|>`` and ``<*>`` there is a ``>>=`` combinator, which is

306+defined like this:

307+

308+.. code-block:: idris

309+

310+ ||| Sequence two grammars. If either consumes some input, the sequence is

311+ ||| guaranteed to consume some input. If the first one consumes input, the

312+ ||| second is allowed to be recursive (because it means some input has been

313+ ||| consumed and therefore the input is smaller)

314+ export %inline

315+ (>>=) : {c1 : Bool} ->

316+ Grammar tok c1 a ->

317+ inf c1 (a -> Grammar tok c2 b) ->

318+ Grammar tok (c1 || c2) b

319+ (>>=) {c1 = False} = SeqEmpty

320+ (>>=) {c1 = True} = SeqEat

321+

322+.. list-table::

323+

324+ * - This allows us to use ``do`` notation for the previous parenthesis example:

325+

326+ - .. code-block:: idris

327+

328+ expr = intLiteral <|> do

329+ openParen

330+ r <- expr

331+ closeParen

332+ pure r

333+

334+This can be more flexible than using the ``<*>`` operator. Also it is defined

335+using ``Inf`` so we can implement recursively defined grammars as above.

336+

337+Implementing the Arithmetic Operators

338+-------------------------------------

339+

340+.. list-table::

341+

342+ * - Now for the operations, in this case: ``+``, ``-`` and ``*``.

343+ The syntax we require for these infix operators

344+ would require recursive grammars like this:

345+

346+ - .. code-block:: idris

347+

348+ expr = expr (op "+") expr

349+

350+As already explained, ``do`` notation can allow us to use recursive

351+definitions but not necessarily left-recursion like this.

352+

353+In order to work up to this gradually lets start with prefix operators

354+(sometimes known as Polish notation) then modify later for infix operators.

355+

356+.. list-table::

357+

358+ * - So prefix operators would have this sort of form:

359+

360+ - .. code-block:: idris

361+

362+ expr = (add (op "+") expr expr)

363+

364+where ``op`` is defined like this:

365+

366+.. code-block:: idris

367+

368+ ||| Matches if this is an operator token and string matches, that is,

369+ ||| it is the required type of operator.

370+ op : String -> Rule Integer

371+ op s = terminal (\x => case tok x of

372+ (Operator s1) => if s==s1 then Just 0 else Nothing

373+ _ => Nothing)

374+

375+.. list-table::

376+

377+ * - and ``add`` is defined like this:

378+

379+ Where:

380+

381+ - x is the add operator.

382+ - y is the first operand.

383+ - z is the second operand.

384+

385+ - .. code-block:: idris

386+

387+ addInt : Integer -> Integer -> Integer

388+ addInt a b = a+b

389+

390+ export

391+ add : Grammar tok c1 Integer ->

392+ Grammar tok c2 Integer ->

393+ Grammar tok c3 Integer ->

394+ Grammar tok ((c1 || c2) || c3) Integer

395+ add x y z = map addInt (x *> y) <*> z

396+

397+

398+

399+The resulting integer will be the sum of the two operands.

400+

401+.. list-table::

402+

403+ * - The other operators are defined in a similar way:

404+

405+ - .. code-block:: idris

406+

407+ subInt : Integer -> Integer -> Integer

408+ subInt a b = a-b

409+

410+ export

411+ sub : Grammar tok c1 Integer ->

412+ Grammar tok c2 Integer ->

413+ Grammar tok c3 Integer ->

414+ Grammar tok ((c1 || c2) || c3) Integer

415+ sub x y z = map subInt (x *> y) <*> z

416+

417+ multInt : Integer -> Integer -> Integer

418+ multInt a b = a*b

419+

420+ export

421+ mult : Grammar tok c1 Integer ->

422+ Grammar tok c2 Integer ->

423+ Grammar tok c3 Integer ->

424+ Grammar tok ((c1 || c2) || c3) Integer

425+ mult x y z = map multInt (x *> y) <*> z

426+

427+So the top level ``Grammar`` can now be defined as follows. Note that this is

428+partial as it is a potentially infinite structure and so not total.

429+

430+.. code-block:: idris

431+

432+ partial

433+ expr : Rule Integer

434+ expr = (add (op "+") expr expr)

435+ <|> (sub (op "-") expr expr)

436+ <|> (mult (op "*") expr expr)

437+ <|> intLiteral <|> (paren expr)

438+

439+.. list-table::

440+

441+ * - To make the testing easier we can use this function:

442+

443+ - .. code-block:: idris

444+

445+ partial

446+ test : String -> Either (ParseError (TokenData ExpressionToken))

447+ (Integer, List (TokenData ExpressionToken))

448+ test s = parse expr (fst (lex expressionTokens s))

449+

450+.. list-table::

451+

452+ * - First test a valid (prefix) expression:

453+

454+ - .. code-block:: idris

455+

456+ *parserEx> test "+1*6(4)"

457+ Right (25,

458+ []) : Either (ParseError (TokenData ExpressionToken))

459+ (Integer, List (TokenData ExpressionToken))

460+

461+Then an invalid syntax:

462+

463+.. code-block:: idris

464+

465+ *parserEx> test "))"

466+ Left (Error "Unrecognised token"

467+ [MkToken 0 0 CParen,

468+ MkToken 0

469+ (case fspan (\ARG =>

470+ not (intToBool (prim__eqChar ARG

471+ '\n')))

472+ ")" of

473+ (incol, "") => c + cast (length incol)

474+ (incol, b) => cast (length incol))

475+ CParen]) : Either (ParseError (TokenData ExpressionToken))

476+ (Integer,

477+ List (TokenData ExpressionToken))

478+

479+However if we try something that is invalid, but starts with a valid token,

480+then it will return ``Right`` (to indicate success)

481+

482+.. code-block:: idris

483+

484+ *parserEx> test "1))"

485+ Right (1,

486+ [MkToken 0

487+ (case fspan (\ARG =>

488+ not (intToBool (prim__eqChar ARG '\n')))

489+ "1" of

490+ (incol, "") => c + cast (length incol)

491+ (incol, b) => cast (length incol))

492+ CParen,

493+ MkToken 0

494+ (case fspan (\ARG =>

495+ not (intToBool (prim__eqChar ARG '\n')))

496+ ")" of

497+ (incol, "") => c + cast (length incol)

498+ (incol, b) => cast (length incol))

499+ CParen]) : Either (ParseError (TokenData ExpressionToken))

500+ (Integer,

501+ List (TokenData ExpressionToken))

502+

503+Infix Notation

504+--------------

505+

506+So far we have implemented a prefix notation for operators (like this:

507+``+ expr expr``) but the aim is to implemented an infix notation (like this:

508+``expr + expr``). To do this we must be able to deal with potentially

509+infinite data structures (see Codata Types here :ref:`sect-typefuns`).

510+

511+First alter the grammar to have infix operations:

512+

513+.. code-block:: idris

514+

515+ addInt : Integer -> Integer -> Integer

516+ addInt a b = a+b

517+

518+ export

519+ add : Grammar tok c1 Integer ->

520+ Grammar tok c2 Integer ->

521+ Grammar tok c3 Integer ->

522+ Grammar tok ((c1 || c2) || c3) Integer

523+ add x y z = map addInt (x <* y) <*> z

524+

525+ subInt : Integer -> Integer -> Integer

526+ subInt a b = a-b

527+

528+ export

529+ sub : Grammar tok c1 Integer ->

530+ Grammar tok c2 Integer ->

531+ Grammar tok c3 Integer ->

532+ Grammar tok ((c1 || c2) || c3) Integer

533+ sub x y z = map subInt (x <* y) <*> z

534+

535+

536+ multInt : Integer -> Integer -> Integer

537+ multInt a b = a*b

538+

539+ export

540+ mult : Grammar tok c1 Integer ->

541+ Grammar tok c2 Integer ->

542+ Grammar tok c3 Integer ->

543+ Grammar tok ((c1 || c2) || c3) Integer

544+ mult x y z = map multInt (x <* y) <*> z

545+

546+ partial

547+ expr : Rule Integer

548+ expr = (add expr (op "+") expr)

549+ <|> (sub expr (op "-") expr)

550+ <|> (mult expr (op "*") expr)

551+ <|> intLiteral <|> (paren expr)

552+

553+However, if this was run, the code would not terminate.

554+

555+Implement Left Recursion Elimination

556+------------------------------------

557+

558+Left factoring, like this, is a general problem.

559+

560+If we have a rule like this:

561+

562+.. code-block:: idris

563+

564+ A -> (x<*>y) <|> (x<*>z)

565+

566+If ``x<*>y`` fails but ``x<*>z`` would succeed a problem is that, ``x<*>y`` has

567+already consumed ``x``, so now ``x<*>z`` will fail.

568+

569+so we could write code to backtrack. That is ``try`` ``x<*>y`` without consuming

570+so that, if the first token succeeds but the following tokens fail, then the

571+first tokens would not be consumed.

572+

573+Another approach is left factoring:

574+

575+Left Factoring

576+--------------

577+

578+Replace the rule with two rules (that is we add a non-terminal symbol) so

579+for example, instead of:

580+

581+.. code-block:: idris

582+

583+ A -> (x<*>y) <|> (x<*>z)

584+

585+we add an extra rule to give:

586+

587+.. code-block:: idris

588+

589+ A -> x<*>N

590+ N -> y <|> z

591+

592+That is we convert a general context-free grammar to a LL(1) grammar. Although

593+not every context-free grammar can be converted to a LL(1) grammar.

594+

595+This still does not solve the infinite recursion issue and there is another

596+problem: the precedence of the operators ``+``, ``-`` and ``*`` is not explicit.

597+

598+.. list-table::

599+

600+ * - To resolve this we can alter the example to have a BNF like this:

601+ Where braces ``{ ... }`` mean the contents can occur 1 or more times.

602+

603+ - .. code-block:: idris

604+

605+ 'expression' ::= ('+'|'-') 'term' {('+'|'-') 'term'}

606+

607+ 'term' ::= 'factor' {'*' 'factor'}

608+

609+ 'factor' ::=

610+ number

611+ | '(' 'expression' ')'

612+

613+

614+.. code-block:: idris

615+

616+ expr : Rule Integer

617+

618+ factor : Rule Integer

619+ factor = intLiteral <|> do

620+ openParen

621+ r <- expr

622+ closeParen

623+ pure r

624+

625+ term : Rule Integer

626+ term = map multInt factor <*> (

627+ (op "*")

628+ *> factor)

629+ <|> factor

630+

631+ expr = map addInt term <*> (

632+ (op "+")

633+ *> term)

634+ <|> map subInt term <*> (

635+ (op "-")

636+ *> term)

637+ <|> term

638+

639+ calc : String -> Either (ParseError (TokenData ExpressionToken))

640+ (Integer, List (TokenData ExpressionToken))

641+ calc s = parse expr (fst (lex expressionTokens s))

642+

643+ lft : (ParseError (TokenData ExpressionToken)) -> IO ()

644+ lft (Error s lst) = putStrLn ("error:"++s)

645+

646+ rht : (Integer, List (TokenData ExpressionToken)) -> IO ()

647+ rht i = putStrLn ("right " ++ (show i))

648+

649+ main : IO ()

650+ main = do

651+ putStr "alg>"

652+ x <- getLine

653+ either lft rht (calc x) -- eliminator for Either

654+

655+As the following tests show, this now handles infix operators and precedence.

656+

657+.. list-table::

658+

659+ * - For example '*' is an infix operator:

660+

661+ - .. code-block:: idris

662+

663+ *algebraREPL> :exec

664+ alg>2*3

665+ right (6, [])

666+

667+ * - Check that atomic number literals work:

668+

669+ - .. code-block:: idris

670+

671+ *algebraREPL> :exec

672+ alg>2

673+ right (2, [])

674+

675+ * - Check that '*' has a higher precedence than '+'.

676+

677+ - .. code-block:: idris

678+

679+ *algebraREPL> :exec

680+ alg>2+3*4

681+ right (14, [])

682+

683+ * - Also '*' has a higher precedence than '+' when the order is reversed.

684+

685+ - .. code-block:: idris

686+

687+ *algebraREPL> :exec

688+ alg>3*4+2

689+ right (14, [])

690+

691+ * - Also precedence can be overridden by parenthesis.

692+

693+ - .. code-block:: idris

694+

695+ *algebraREPL> :exec

696+ alg>(2+3)*4

697+ right (20, [])

698+

699+This is still not correct because it does not correctly parse multiple sums or terms

700+like ``1+2+3`` or ``1*2*3``.

docs/parserLibrary/whitespace.rstnew file+250

@@ -0,0 +1,250 @@

1+.. _parserLibraryWhitespace:

2+

3+Whitespace and Comments

4+=======================

5+

6+The previous two pages introduced the lexer and parser but have not yet

7+discussed how to handle whitespace and comments.

8+

9+In some grammars whitespace and comments would not be considered significant and

10+so we might be tempted not to generate any tokens for them. However, in the

11+running example, we may want to make spaces significant in the future. For

12+example, we might want to implement function application expressed by

13+juxtaposition as in Haskell and Idris like this: ``f x``.

14+

15+So, on this page, we will add a token for whitespace and comments. We will

16+then consider two ways to process this:

17+

18+- Filter all whitespace tokens from the lexer results before passing to

19+ the parser.

20+- Process the whitespace tokens in the parser.

21+

22+Whitespace and Comments in Lexer

23+--------------------------------

24+

25+To start with we can use the same token for both whitespace and comments. Here

26+it is called ``Comment`` and added to the ``ExpressionToken`` data structure

27+like this:

28+

29+.. code-block:: idris

30+

31+ public export

32+ data ExpressionToken = Number Integer

33+ | Operator String

34+ | OParen

35+ | CParen

36+ | Comment String

37+ | EndInput

38+

39+This is added to the ``TokenMap`` like this:

40+

41+.. code-block:: idris

42+

43+ ||| from https://github.com/edwinb/Idris2/blob/master/src/Parser/Lexer.idr

44+ comment : Lexer

45+ comment = is '-' <+> is '-' <+> many (isNot '\n')

46+

47+ expressionTokens : TokenMap ExpressionToken

48+ expressionTokens =

49+ [(digits, \x => Number (toInt' x)),

50+ (operator, \x => Operator x),

51+ (is '(' ,\x => OParen),

52+ (is ')' ,\x => CParen),

53+ (spaces, Comment),

54+ (comment, Comment)]

55+

56+As you can see, the comment is defined like a single line Idris comment,

57+it starts with ``--`` and continues for the remainder of the line.

58+

59+We don't need to define ``spaces`` because it is already defined in

60+: https://github.com/idris-lang/Idris-dev/blob/master/libs/contrib/Text/Lexer.idr

61+like this:

62+

63+.. code-block:: idris

64+

65+ ||| Recognise a single whitespace character

66+ ||| /\\s/

67+ space : Lexer

68+ space = pred isSpace

69+

70+ ||| Recognise one or more whitespace characters

71+ ||| /\\s+/

72+ spaces : Lexer

73+ spaces = some space

74+

75+If these whitespace tokens are not significant, that is, they can appear

76+anywhere and they are optional then we can filter them out before the parser

77+gets them like this:

78+

79+.. code-block:: idris

80+

81+ processWhitespace : (List (TokenData ExpressionToken), Int, Int, String)

82+ -> (List (TokenData ExpressionToken), Int, Int, String)

83+ processWhitespace (x,l,c,s) = ((filter notComment x),l,c,s) where

84+ notComment : TokenData ExpressionToken -> Bool

85+ notComment t = case tok t of

86+ Comment _ => False

87+ _ => True

88+

89+ calc : String -> Either (ParseError (TokenData ExpressionToken))

90+ (Integer, List (TokenData ExpressionToken))

91+ calc s = parse expr (fst (processWhitespace (lex expressionTokens s)))

92+

93+

94+Whitespace and Comments in Parser

95+---------------------------------

96+

97+If we sometimes require whitespace to be significant then we can't filter

98+them out as above. In this case the ``Comment`` tokens are sent to the parser

99+which now needs to be able to handle them.

100+

101+.. code-block:: idris

102+

103+ commentSpace : Rule Integer

104+ commentSpace = terminal (\x => case tok x of

105+ Comment s => Just 0

106+ _ => Nothing)

107+

108+So far we don't have any syntax that requires spaces to be significant so we

109+need to define the grammar so that it will parse with, or without, spaces.

110+This needs to be done in a systematic way, here I have defined the grammar so

111+that there is an optional space to the right of every atom or operator.

112+First add versions of ``intLiteral`` , ``openParen`` , ``closeParen``

113+and ``op`` that allow optional spaces/comments to the right of them:

114+

115+.. code-block:: idris

116+

117+ intLiteralC : Rule Integer

118+ intLiteralC = (intLiteral <* commentSpace) <|> intLiteral

119+

120+ openParenC : Rule Integer

121+ openParenC = (openParen <* commentSpace) <|> openParen

122+

123+ closeParenC : Rule Integer

124+ closeParenC = (closeParen <* commentSpace) <|> closeParen

125+

126+ ||| like op but followed by optional comment or space

127+ opC : String -> Rule Integer

128+ opC s = ((op s) <* commentSpace) <|> (op s)

129+

130+Then just use these functions instead of the original functions:

131+

132+.. code-block:: idris

133+

134+ expr : Rule Integer

135+

136+ factor : Rule Integer

137+ factor = intLiteralC <|> do

138+ openParenC

139+ r <- expr

140+ closeParenC

141+ pure r

142+

143+ term : Rule Integer

144+ term = map multInt factor <*> (

145+ (opC "*")

146+ *> factor)

147+ <|> factor

148+

149+ expr = map addInt term <*> (

150+ (opC "+")

151+ *> term)

152+ <|> map subInt term <*> (

153+ (opC "-")

154+ *> term)

155+ <|> term

156+

157+ calc : String -> Either (ParseError (TokenData ExpressionToken))

158+ (Integer, List (TokenData ExpressionToken))

159+ calc s = parse expr (fst (lex expressionTokens s))

160+

161+ lft : (ParseError (TokenData ExpressionToken)) -> IO ()

162+ lft (Error s lst) = putStrLn ("error:"++s)

163+

164+ rht : (Integer, List (TokenData ExpressionToken)) -> IO ()

165+ rht i = putStrLn ("right " ++ (show i))

166+

167+ main : IO ()

168+ main = do

169+ putStr "alg>"

170+ x <- getLine

171+ either lft rht (calc x) -- eliminator for Either

172+

173+

174+Defining Block Structure using Indents

175+--------------------------------------

176+

177+Many languages such as Python, Haskell and Idris use indents to delimit

178+the block structure of the language.

179+

180+We can see how Idris2 does it here

181+: https://github.com/edwinb/Idris2/blob/master/src/Parser/Support.idr

182+

183+.. code-block:: idris

184+

185+ export

186+ IndentInfo : Type

187+ IndentInfo = Int

188+

189+ export

190+ init : IndentInfo

191+ init = 0

192+

193+EndInput Token

194+--------------

195+

196+So far, the parser will return a successful result even if the full input

197+is not consumed. To ensure that the top level syntax is fully matched we

198+add a ``EndInput`` token to indicate the last token.

199+

200+``EndInput`` is added to the other tokens like this:

201+

202+.. code-block:: idris

203+

204+ data ExpressionToken = Number Integer

205+ | Operator String

206+ | OParen

207+ | CParen

208+ | Comment String

209+ | EndInput

210+

211+A rule to consume this token is added:

212+

213+.. code-block:: idris

214+

215+ eoi : Rule Integer

216+ eoi = terminal (\x => case tok x of

217+ EndInput => Just 0

218+ _ => Nothing)

219+

220+Instead of using ``expr`` at the top level of the syntax we can now define

221+``exprFull`` as shown here. This will make sure that only when ``EndInput``

222+is consumed will the parse be successful:

223+

224+.. code-block:: idris

225+

226+ exprFull : Rule Integer

227+ exprFull = expr <* eoi

228+

229+The following code makes sure ``EndInput`` is added to the end of the token

230+list:

231+

232+.. code-block:: idris

233+

234+ processWhitespace : (List (TokenData ExpressionToken), Int, Int, String)

235+ -> (List (TokenData ExpressionToken), Int, Int, String)

236+ processWhitespace (x,l,c,s) = ((filter notComment x)++

237+ [MkToken l c EndInput],l,c,s) where

238+ notComment : TokenData ExpressionToken -> Bool

239+ notComment t = case tok t of

240+ Comment _ => False

241+ _ => True

242+

243+All we have to do now is use ``exprFull`` instead of ``expr``:

244+

245+.. code-block:: idris

246+

247+ calc : String -> Either (ParseError (TokenData ExpressionToken))

248+ (Integer, List (TokenData ExpressionToken))

249+ calc s = parse exprFull (fst (processWhitespace (lex expressionTokens s)))

250+

docs/proofs/definitional.rst+12−8

@@ -1,3 +1,7 @@

1+*******************

2+Background Material

3+*******************

4+

15In order to understand how to write proofs in Idris I think its worth clarifying some fundamentals, such as,

26

37- Propositions and judgments

@@ -95,11 +99,11 @@ So now that we can represent propositions as types other aspects of propositiona

9599+----------+-------------------+--------------------------+

96100| B | y=z | |

97101+----------+-------------------+--------------------------+

98−| and | A /\ B | Pair(x=y,y=z) |

102+| and | A /\\ B | ``Pair(x=y,y=z)`` |

99103+----------+-------------------+--------------------------+

100−| or | A \/ B | Either(x=y,y=z) |

104+| or | A \\/ B | ``Either(x=y,y=z)`` |

101105+----------+-------------------+--------------------------+

102−| implies | A -> B | (x=y) -> (y=x) |

106+| implies | A -> B | ``(x=y) -> (y=x)`` |

103107+----------+-------------------+--------------------------+

104108| for all | y=z | |

105109+----------+-------------------+--------------------------+

@@ -126,8 +130,8 @@ We can have a type which corresponds to disjunction:

126130.. code-block:: idris

127131

128132 data Or : Type -> Type -> Type where

129− OrIntroLeft : a -> A a b

130− OrIntroRight : b -> A a b

133+ OrIntroLeft : a -> A a b

134+ OrIntroRight : b -> A a b

131135

132136There is a built in type called 'Either'.

133137

@@ -202,7 +206,7 @@ In the following pages we discuss how to resolve propositionaly equalies.

202206Axiomatic and Constructive Approaches

203207=====================================

204208

205−How should we define types so that we can do proofs on them? In the natural numbers with plus example we could have started by treating it as a group based on the plus operator. So we have axioms:

209+How should we define types so that we can do proofs on them? In the natural numbers with the plus example we could have started by treating it as a group based on the plus operator. So we have axioms:

206210

207211- for all x,y : ``x+y=y+x``

208212- for all x: ``x + 0 = x = 0 + x``

@@ -215,13 +219,13 @@ These are axioms, that is a propositions/types that are asserted to be true with

215219

216220.. code-block:: idris

217221

218− commutePlus ``postulate``: x -> y -> plus x y = plus y x

222+ postulate commutePlus: (x:Nat) -> (y:Nat) -> plus x y = plus y x

219223

220224Alternatively we could define the natural numbers based on Zero and Successor. The axioms above then become derived rules and we also gain the ability to do inductive proofs.

221225

222226As we know, Idris uses both of these approaches with automatic coercion between them which gives the best of both worlds.

223227

224−So what can we learn from this to implement out own types:

228+So what can we learn from this to implement our own types:

225229

226230- Should we try to implement both approaches?

227231- Should we define our types by constructing up from primitive types?

docs/proofs/index.rst+2−2

@@ -4,7 +4,7 @@

44Theorem Proving

55###############

66

7−A tutorial on theorem proving in Idris.

7+A tutorial on theorem proving in Idris.

88

99.. note::

1010

@@ -13,7 +13,7 @@ A tutorial on theorem proving in Idris.

1313 Idris Community* has waived all copyright and related or neighboring

1414 rights to Documentation for Idris.

1515

16− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

16+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1717

1818.. toctree::

1919 :maxdepth: 1

docs/proofs/interactive.rst+17−17

@@ -15,15 +15,15 @@ construct proofs as described on this page.

1515Elab and Pruviloj Libraries

1616===========================

1717

18−Elaborator reflection is defined in prelude/Language/Reflection/Elab.idr

19−and pruviloj is defined in Idris-dev/libs/pruviloj/

18+Elaborator reflection is defined in ``prelude/Language/Reflection/Elab.idr``

19+and ``pruviloj`` is defined in ``Idris-dev/libs/pruviloj/``.

2020

21−``Elab`` defines the basics such as: solve, attack, intro, compute,

22−rewriteWith and others.

21+``Elab`` defines the basics such as: ``solve``, ``attack``, ``intro``, ``compute``,

22+``rewriteWith`` and others.

2323``pruviloj`` defines some more advanced derived commands such as:

24−reflexivity and others.

24+``reflexivity`` and others.

2525

26−To use ``pruviloj`` call Idris with the "-p pruviloj" option and add:

26+To use ``pruviloj`` call Idris with the ``-p pruviloj`` option and add:

2727

2828.. code-block:: idris

2929

@@ -34,7 +34,7 @@ to the top of your file.

3434

3535It is useful to get the docs at the REPL by using the ``:doc`` command, and

3636search the docstrings using ``:apropos``. So to introduce the functions from

37−Elab and Pruviloj, that we will need for the following example, here are

37+``Elab`` and ``Pruviloj``, that we will need for the following example, here are

3838their docstrings:

3939

4040.. code-block:: idris

@@ -84,7 +84,7 @@ their docstrings:

8484 that the hole be immediately under its binder (use attack if it might

8585 not be).

8686

87−Here is the command from pruviloj that we will need for the example on

87+Here is the command from ``pruviloj`` that we will need for the example on

8888this page:

8989

9090.. code-block:: idris

@@ -129,18 +129,18 @@ On running , two global names are created, ``plusredZ_Z`` and

129129

130130 . / _/___/ /____(_)____

131131 / // __ / ___/ / ___/ Version 1.2.0

132− _/ // /_/ / / / (__ ) http://www.idris-lang.org/

132+ _/ // /_/ / / / (__ ) https://www.idris-lang.org/

133133 /___/\__,_/_/ /_/____/ Type :? for help

134134

135135 Idris is free software with ABSOLUTELY NO WARRANTY.

136136 For details type :warranty.

137137 Holes: Main.plusredZ_S, Main.plusredZ_Z

138138

139−This tells us that we have two holes Main.plusredZ_S and Main.plusredZ_Z. We can solve

139+This tells us that we have two holes ``Main.plusredZ_S`` and ``Main.plusredZ_Z``. We can solve

140140these separately, ``plusredZ_Z`` is the simplest so we will do that first.

141141

142142The ``:elab plusredZ_Z`` command enters interactive elaboration mode, which can be used to

143−complete the missing definition for plusredZ_Z.

143+complete the missing definition for ``plusredZ_Z``.

144144

145145.. code-block:: idris

146146

@@ -150,7 +150,7 @@ complete the missing definition for plusredZ_Z.

150150 {hole_0} : 0 = 0

151151

152152This has been normalised to ``0 = 0`` so now we have to prove that ``0`` equals ``0``, which

153−is easy to prove by reflexivity from the pruviloj library:

153+is easy to prove by ``reflexivity`` from the ``pruviloj`` library:

154154

155155.. code-block:: idris

156156

@@ -190,7 +190,7 @@ accessible by pattern matching) and ``ih`` — the local variable

190190containing the result of the recursive call. We can introduce these as

191191assumptions using the ``intro`` tactic twice. The parameter is entered as

192192a constant of type ``TTName`` which is entered as a backtick with double

193−braces \`{{ih}}. This gives:

193+braces ```{{ih}}``. This gives:

194194

195195.. code-block:: idris

196196

@@ -223,11 +223,11 @@ like to use this knowledge to replace ``plus k 0`` in the goal with

223223 {hole_0} : S k = S k

224224

225225The ``rewriteWith`` tactic takes an equality proof as an argument, and tries

226−to rewrite the goal using that proof. The ih value is entered as a constant

227−of type ``TTName`` which is entered as a backtick with double braces `{{ih}} but

226+to rewrite the goal using that proof. The ``ih`` value is entered as a constant

227+of type ``TTName`` which is entered as a backtick with double braces ```{{ih}}`` but

228228``rewriteWith`` requires an expression of type ``Raw``, rather than just a name,

229−so the Var constructor is used to make a variable. Here, it results in an equality

230−which is trivially provable using reflexivity:

229+so the ``Var`` constructor is used to make a variable. Here, it results in an equality

230+which is trivially provable using ``reflexivity``:

231231

232232.. code-block:: idris

233233

docs/proofs/pluscomm.rst+1−1

@@ -182,7 +182,7 @@ interface rather than using ``plus`` directly. They have the names

182182

183183In the remainder of this tutorial, we will explore several different

184184ways of proving ``plus_commutes`` (or, to put it another way, writing

185−the function.) We will also discuss how to use such equality proofs, and

185+the function). We will also discuss how to use such equality proofs, and

186186see where the need for them arises in practice.

187187

188188.. [1]

docs/proofs/propositional.rst+27−22

@@ -1,19 +1,22 @@

1−This page attempts to explain some of the techniques used in Idris to prove propositional equalities.

2−

1+******************************

32Proving Propositional Equality

4−==============================

3+******************************

4+

5+This page attempts to explain some of the techniques used in Idris to prove propositional equalities.

56

6−We have seen that definitional equalities can be proved using Refl since they always normalise to unique values that can be compared directly.

7+We have seen that definitional equalities can be proved using ``Refl`` since they always normalise to unique values that can be compared directly.

78

8−However with propositional equalities we are using symbolic variables they do not always normalse.

9+However with propositional equalities we are using symbolic variables they do not always normalise.

910

1011So to take the previous example:

1112

12−plusReducesR : (n:Nat) -> plus n Z = n

13+.. code-block:: idris

14+

15+ plusReducesR : (n:Nat) -> plus n Z = n

1316

14−In this case 'plus n Z' does not normalise to n. Even though both sides are equal we cannot pattern match Refl.

17+In this case ``plus n Z`` does not normalise to ``n``. Even though both sides are equal we cannot pattern match ``Refl``.

1518

16−If the pattern match cannot match for all 'n' then the way around this is to separately match all possible values of 'n'. In the case of natural numbers we do this by induction.

19+If the pattern match cannot match for all ``n`` then the way around this is to separately match all possible values of ``n``. In the case of natural numbers we do this by induction.

1720

1821So here:

1922

@@ -24,19 +27,21 @@ So here:

2427 plusReducesR {n = (S k)} = let rec = plus_commutes_Z {n=k} in

2528 rewrite rec in Refl

2629

27−we don't call Refl to match on 'n = plus n 0' forall 'n' we call it for every number separately. So, in the second line, the pattern matcher knows to substitute Z for n in the type being matched. This uses 'rewrite' which is explained below.

30+we don't call ``Refl`` to match on ``n = plus n 0`` forall ``n`` we call it for every number separately. So, in the second line, the pattern matcher knows to substitute ``Z`` for ``n`` in the type being matched. This uses ``rewrite`` which is explained below.

2831

2932Replace

3033=======

3134

32−This implements the 'indiscernability of identicals' principle, if two terms are equal then they have the same properties. In other words, if x=y, then we can substitute y for x in any expression. In our proofs we can express this as:

35+This implements the *indiscernability of identicals* principle, if two terms are equal then they have the same properties. In other words, if ``x=y``, then we can substitute ``y`` for ``x`` in any expression. In our proofs we can express this as:

36+

37+.. code-block:: idris

3338

3439 if x=y

3540 then P x = P y

3641

37−where P is a pure function representing the property. In the examples below P is an expression in some variable with a type like this: P: n -> Type

42+where ``P`` is a pure function representing the property. In the examples below ``P`` is an expression in some variable with a type like this: ``P: n -> Type``.

3843

39−So if n is a natural number variable then P could be something like 2*n + 3.

44+So if ``n`` is a natural number variable then ``P`` could be something like ``2*n + 3``.

4045

4146To use this in our proofs there is the following function in the prelude:

4247

@@ -46,14 +51,14 @@ To use this in our proofs there is the following function in the prelude:

4651 replace : {a:_} -> {x:_} -> {y:_} -> {P : a -> Type} -> x = y -> P x -> P y

4752 replace Refl prf = prf

4853

49−Removing the implicits, if we supply an equality (x=y) and a proof of a property of x (P x) then we get a proof of a property of y (P y)

54+Removing the implicits, if we supply an equality ``x=y`` and a proof of a property of ``x`` (i.e. ``P x``) then we get a proof of a property of ``y`` (i.e. ``P y``)

5055

5156.. code-block:: idris

5257

5358 > :t replace

5459 replace : (x = y) -> P x -> P y

5560

56−So, in the following example, if we supply p1 x which is a proof that x=2 and the equality x=y then we get a proof that y=2.

61+So, in the following example, if we supply ``p1 x`` which is a proof that ``x=2`` and the equality ``x=y`` then we get a proof that ``y=2``.

5762

5863.. code-block:: idris

5964

@@ -66,16 +71,16 @@ So, in the following example, if we supply p1 x which is a proof that x=2 and th

6671Rewrite

6772=======

6873

69−Similar to 'replace' above but Idris provides a nicer syntax which makes 'rewrite' easier to use in examples like plusReducesR above.

74+Similar to ``replace`` above but Idris provides a nicer syntax which makes ``rewrite`` easier to use in examples like ``plusReducesR`` above.

7075

7176.. code-block:: idris

7277

7378 rewrite__impl : (P : a -> Type) -> x = y -> P y -> P x

7479 rewrite__impl p Refl prf = prf

7580

76−The difference from 'replace' above is nicer syntax and the property p1 is explicitly supplied and it goes in the opposite direction (input and output reversed).

81+The difference from ``replace`` above is nicer syntax and the property ``p1`` is explicitly supplied and it goes in the opposite direction (input and output reversed).

7782

78−Example: again we supply p1 which is a proof that x=2 and the equality x=y then we get a proof that y=2.

83+Example: again we supply ``p1`` which is a proof that ``x=2`` and the equality ``x=y`` then we get a proof that ``y=2``.

7984

8085.. code-block:: idris

8186

@@ -87,16 +92,16 @@ Example: again we supply p1 which is a proof that x=2 and the equality x=y then

8792

8893We can think of rewrite doing this:

8994

90− * Start with a equation x=y and a property P: x -> Type

91− * Searches y in P

92− * Replaces all occurrences of y with x in P.

95+ * start with a equation ``x=y`` and a property ``P: x -> Type``;

96+ * search ``y`` in ``P``;

97+ * replace all occurrences of ``y`` with ``x`` in ``P``.

9398

9499That is, we are doing a substitution.

95100

96101Symmetry and Transitivity

97102=========================

98103

99−In addition to 'reflexivity' equality also obeys 'symmetry' and 'transitivity' and these are also included in the prelude:

104+In addition to *reflexivity* equality also obeys *symmetry* and *transitivity* and these are also included in the prelude:

100105

101106.. code-block:: idris

102107

@@ -111,7 +116,7 @@ In addition to 'reflexivity' equality also obeys 'symmetry' and 'transitivity' a

111116Heterogeneous Equality

112117======================

113118

114−Also included in the prelude:

119+Also included in the prelude:

115120

116121.. code-block:: idris

117122

docs/reference/codegen.rst+6−4

@@ -1,3 +1,5 @@

1+.. _code-generation-targets:

2+

13************************

24Code Generation Targets

35************************

@@ -34,10 +36,10 @@ issue the following command:

3436 $ idris --codegen javascript hello.idr -o hello.js

3537

3638

37−Idris can produce very big chunks of JavaScript code (hello world

38−weighs in at 1500 lines). However, the generated code can be minified

39−using the `closure-compiler

40−<https://developers.google.com/closure/compiler/>`__ from Google.

39+Idris can produce big chunks of JavaScript code (hello world weighs in at about

40+60 lines). However, the generated code can be minified using the

41+`closure-compiler <https://developers.google.com/closure/compiler/>`__ from

42+Google.

4143

4244::

4345

docs/reference/compilation.rst+15−15

@@ -54,7 +54,7 @@ by setting a verbosity level.

5454 Checking, and the individual steps prior to code generation.

5555

5656

57−By default Idris' progress reporting is set to quiet-``-q``, or ``--quiet``.

57+By default Idris' progress reporting is set to quiet: ``-q``, or ``--quiet``.

5858

5959Logging Internal Operation

6060===========================

@@ -100,32 +100,32 @@ Environment Variables

100100Several paths set by default within the Idris compiler can be

101101overridden through environment variables. The provided variables are:

102102

103−* `IDRIS_CC` Change the `C` compiler used by the `C` backend.

104−* `IDRIS_CFLAGS` Change the `C` flags passed to the `C` compiler.

105−* `TARGET` Change the target directory i.e. `data dir` where Idris installs files when installing using Cabal/Stack.

106−* `IDRIS_LIBRARY_PATH` Change the location of where installed packages are found/installed.

107−* `IDRIS_DOC_PATH` Change the location of where generated idrisdoc for packages are installed.

103+* ``IDRIS_CC`` Change the *C compiler* used by the *C backend*.

104+* ``IDRIS_CFLAGS`` Change the *C flags* passed to the *C compiler*.

105+* ``TARGET`` Change the target directory i.e. *data dir* where Idris installs files when installing using Cabal/Stack.

106+* ``IDRIS_LIBRARY_PATH`` Change the location of where installed packages are found/installed.

107+* ``IDRIS_DOC_PATH`` Change the location of where generated idrisdoc for packages are installed.

108108

109109.. note::

110110

111111 In versions of Idris prior to 0.12.3 the environment variables

112− `IDRIS_LIBRARY_PATH` and `TARGET` were both used to affect the

112+ ``IDRIS_LIBRARY_PATH`` and ``TARGET`` were both used to affect the

113113 installation of single packages and direct where Idris installed

114114 its data. The meaning of these variables has changed, and command

115115 line options are preferred when changing where individual packages

116116 are installed.

117117

118−The CLI option `--ibcsubdir` can be used to direct where generated IBC

118+The CLI option ``--ibcsubdir`` can be used to direct where generated IBC

119119files are placed. However, this means Idris will install files in a

120120non-standard location separate from the rest of the installed

121−packages. The CLI option `--idrispath <dir>` allows you to add a

121+packages. The CLI option ``--idrispath <dir>`` allows you to add a

122122directory to the library search path; this option can be used multiple

123−times and can be shortened to `-i <dir>`. Similary, the `--sourcepath

124−<dir>` option can be used to add directories to the source search

125−path. There is no shortened version for this option as `-s` is a

123+times and can be shortened to ``-i <dir>``. Similary, the ``--sourcepath

124+<dir>`` option can be used to add directories to the source search

125+path. There is no shortened version for this option as ``-s`` is a

126126reserved flag.

127127

128128Further, Idris also supports options to augment the paths used, and

129−pass options to the code generator backend. The option `--cg-opt

130−<ARG>` can be used to pass options to the code generator. The format

131−of `<ARG>` is dependent on the selected backend.

129+pass options to the code generator backend. The option ``--cg-opt

130+<ARG>`` can be used to pass options to the code generator. The format

131+of ``<ARG>`` is dependent on the selected backend.

docs/reference/erasure.rst+3−3

@@ -254,7 +254,7 @@ Benchmarks

254254==========

255255

256256- source: https://github.com/ziman/idris-benchmarks

257−- results: http://ziman.functor.sk/erasure-bm/

257+- results: https://ziman.functor.sk/erasure-bm/

258258

259259It can be clearly seen that asymptotics are improved by erasure.

260260

@@ -269,7 +269,7 @@ Usage warnings are quite bad and unhelpful at the moment. We should

269269include more information and at least translate argument numbers to

270270their names.

271271

272−There is no decent documentation yet. This wiki page is the first one.

272+There is no decent documentation yet. This page is the first one.

273273

274274There is no generally accepted terminology. We switch between

275275"dotted", "unused", "erased", "irrelevant", "inaccessible", while each

@@ -499,4 +499,4 @@ References

499499

500500.. [BMM04] Edwin Brady, Conor McBride, James McKinna: `Inductive

501501 families need not store their indices

502− <http://citeseerx.ist.psu.edu/viewdoc/summary;jsessionid=1F796FCF0F2C4C535FC70F62BE2FB821?doi=10.1.1.62.3849>`__

502+ <https://citeseerx.ist.psu.edu/viewdoc/summary;jsessionid=1F796FCF0F2C4C535FC70F62BE2FB821?doi=10.1.1.62.3849>`__

docs/reference/ffi.rst+7−6

@@ -204,9 +204,10 @@ unable to pass the closed-over values through C. If we want to pass Idris values

204204to the callback we have to pass them through C explicitly. Non-primitive Idris

205205values can be passed to C via the ``Raw`` type.

206206

207−The other big limitation is that it doesn't support IO functions. Use

208−``unsafePerformIO`` to wrap them (i.e. to make an IO function usable as a callback, change the return type

209−from IOr to r, and change the = do to = unsafePerformIO $ do).

207+The other big limitation is that it doesn't support ``IO`` functions. Use

208+``unsafePerformIO`` to wrap them (i.e. to make an ``IO`` function usable as a

209+callback, change the return type from ``IO r`` to ``r``, and change the ``= do``

210+to ``= unsafePerformIO $ do``).

210211

211212There are two special function names:

212213``%wrapper`` returns the function pointer that wraps an Idris function. This

@@ -258,7 +259,7 @@ useful to access constants that are preprocessor definitions (like ``INT_MAX``).

258259 main = print !intMax

259260

260261For more complicated interactions with C (such as reading and setting fields

261−of a C struct), there is a module CFFI available in the contrib package.

262+of a C ``struct``), there is a module C FFI available in the contrib package.

262263

263264C heap

264265------

@@ -371,7 +372,7 @@ Usage from C code

371372The ``Raw`` type constructor allows you to access or return a runtime

372373representation of the value. For instance, if you want to copy a string

373374generated from C code into an Idris value, you may want to return a

374−``Raw String``instead of a ``String`` and use ``MKSTR`` or ``MKSTRlen`` to

375+``Raw String`` instead of a ``String`` and use ``MKSTR`` or ``MKSTRlen`` to

375376copy it over.

376377

377378.. code-block:: idris

@@ -393,7 +394,7 @@ FFI implementation

393394------------------

394395

395396In order to write bindings to external libraries, the details of how

396−``foreign`` works are unnecessary --- you simply need to know that

397+``foreign`` works are unnecessary: you simply need to know that

397398``foreign`` takes an FFI descriptor, the function name, and its

398399type. It is instructive to look a little deeper, however:

399400

docs/reference/index.rst+1−2

@@ -14,7 +14,7 @@ This will tell you how Idris works, for using it you should read the Idris Tutor

1414 Idris Community* has waived all copyright and related or neighboring

1515 rights to Documentation for Idris.

1616

17− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

17+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1818

1919

2020.. toctree::

@@ -36,7 +36,6 @@ This will tell you how Idris works, for using it you should read the Idris Tutor

3636 internals

3737 language-features

3838 language-extensions

39− elaborator-reflection

4039 type-directed-search

4140 partial-evaluation

4241 misc

docs/reference/internals.rst+31−28

@@ -10,8 +10,8 @@ free to contribute.

1010This document assumes that you are already familiar with Idris. It is

1111intended for those who want to work on the internals.

1212

13−People looking to develop new back ends may want to look at [[Idris back

14−end IRs\|Idris-back-end-IRs]]

13+People looking to develop new back ends may want to look at

14+:ref:`code-generation-targets`

1515

1616Core/TT.hs

1717==========

@@ -53,7 +53,7 @@ with ``SC`` and ``CaseAlt`` to get GHC to generate a function for

5353mapping over contained terms.

5454

5555Constructor cases (``ConCase`` in ``CaseAlt``) refer to numbered

56−constructors. Every constructor is numbered 0,1,2,…. At this stage in

56+constructors. Every constructor is numbered *0,1,2,…*. At this stage in

5757the compiler, the tags are datatype-local. After defunctionalization,

5858however, they are made globally unique.

5959

@@ -91,12 +91,12 @@ dictionary which makes totality checking easier.

9191The ``normalise*`` functions give different behaviors - but

9292``normalise`` is the most common.

9393

94−``normaliseC`` - "resolved" means with names converted to de Bruijn

95−indices as appropriate.

94+- ``normaliseC`` - "resolved" means with names converted to de Bruijn

95+ indices as appropriate;

9696

97−``normaliseAll`` - reduce everything, even if it's non-total

97+- ``normaliseAll`` - reduce everything, even if it's non-total;

9898

99−``normaliseTrace`` - special-purpose for debugging

99+- ``normaliseTrace`` - special-purpose for debugging.

100100

101101``simplify`` - reduce the things that are small - the list argument is

102102the things to not reduce.

@@ -110,8 +110,8 @@ Core/Elaborate.hs

110110=================

111111

112112Idris definitions are elaborated one by one and turned into the

113−corresponding TT. This is done with a tactic language as an EDSL in the

114−Elab monad (or Elab' when there's a custom state).

113+corresponding ``TT``. This is done with a tactic language as an EDSL in the

114+``Elab`` monad (or ``Elab'`` when there's a custom state).

115115

116116Lots of plumbing for errors.

117117

@@ -122,17 +122,17 @@ The string in the pair returned by elaborate is log information.

122122See JFP paper, but the names don't necessarily map to each other. The

123123paper is the "idealized version" without logging, additional state, etc.

124124

125−All the tactics take Raws, typechecking happens there.

125+All the tactics take ``Raw`` s, typechecking happens there.

126126

127−claim (x : t) assumes a new x : t.

127+``claim (x : t)`` assumes a new ``x : t``.

128128

129129PLEASE TIDY THINGS UP!

130130

131−proofSearch flag to try' is whether the failure came from a human (so

131+``proofSearch`` flag is to try whether the failure came from a human (so

132132fail) or from a machine (so continue)

133133

134−Idris-level syntax for providing alternatives explicitly: (\| x, y, z

135−\|) try x, y, z in order, and take the first that succeeds.

134+Idris-level syntax for providing alternatives explicitly: ``(| x, y, z

135+|)`` try ``x``, ``y``, ``z`` in order, and take the first that succeeds.

136136

137137Core/ProofState.hs

138138==================

@@ -140,37 +140,40 @@ Core/ProofState.hs

140140Core/Unify.hs

141141=============

142142

143−Deals with unification. Unification can reply with: - this works - this

144−can never work - this will work if these other unification problems work

145−out (eg unifying f x with 1)

143+Deals with unification. Unification can reply with:

146144

147−match\_unify: same thing as unification except it's just matching name

148−against name, term against term. x + y matches to 0 + y with x = 0. Used

149−for <== syntax as well as type class resolution.

145+- this works

146+- this can never work

147+- this will work if these other unification problems work out (e.g.

148+ unifying ``f x`` with ``1``)

149+

150+``match_unify``: same thing as unification except it's just matching name

151+against name, term against term. ``x + y`` matches to ``0 + y`` with

152+``x = 0``. Used for ``<==`` syntax as well as type class resolution.

150153

151154Idris/AbsSyntaxTree.hs

152155======================

153156

154−PTerm is the datatype of Idris syntax. P is for Program. Each PTerm

155−turns into a TT term by applying a series of tactics.

157+``PTerm`` is the datatype of Idris syntax. ``P`` is for *Program*.

158+Each ``PTerm`` turns into a TT term by applying a series of tactics.

156159

157−IState is the major interpreter state. The global context is the

158−tt\_ctxt field.

160+``IState`` is the major interpreter state. The global context is the

161+``tt_ctxt`` field.

159162

160−Ctxt maps possibly ambiguous names to their referents.

163+``Ctxt`` maps possibly ambiguous names to their referents.

161164

162165Idris/ElabDecls.hs

163166==================

164167

165−This is where the actual elaboration from PTerm to TT happens.

168+This is where the actual elaboration from ``PTerm`` to ``TT`` happens.

166169

167170Idris/ElabTerm.hs

168171=================

169172

170−build is the function that creates a Raw. All the "junk" is to deal with

173+``build`` is the function that creates a ``Raw``. All the "junk" is to deal with

171174things like metavars and so forth. It has to remember what names are

172175still to be defined, and it doesn't yet know the type (filled in by

173176unificaiton later). Also case expressions have to turn into top-level

174177functions.

175178

176−resolveTC is type class resolution.

179+``resolveTC`` is type class resolution.

docs/reference/language-extensions.rst+8−3

@@ -3,13 +3,12 @@ Language Extensions

33*******************

44

55

6−

76Type Providers

87===============

98

109Idris type providers are a way to get the type system to reflect

1110observations about the world outside of Idris. Similarly to `F# type

12−providers <http://msdn.microsoft.com/en-us/library/vstudio/hh156509.aspx>`__,

11+providers <https://msdn.microsoft.com/en-us/library/vstudio/hh156509.aspx>`__,

1312they cause effectful computations to run during type checking, returning

1413information that the type checker can use when checking the rest of the

1514program. While F# type providers are based on code generation, Idris

@@ -32,5 +31,11 @@ to the user.

3231Example Idris type providers can be seen at `this

3332repository <https://github.com/david-christiansen/idris-type-providers>`__.

3433More detailed descriptions are available in David Christiansen's `WGP

35−'13 paper <http://dx.doi.org/10.1145/2502488.2502495>`__ and `M.Sc.

34+'13 paper <https://dx.doi.org/10.1145/2502488.2502495>`__ and `M.Sc.

3635thesis <http://itu.dk/people/drc/david-christiansen-thesis.pdf>`__.

36+

37+Elaborator Reflection

38+=====================

39+

40+Another way to extend the language is elaborator reflection which is described

41+in the :ref:`elaborator-index` section.

docs/reference/misc.rst+5−5

@@ -115,11 +115,11 @@ Here is an example:

115115 import Syntax.PreorderReasoning

116116 multThree : (a, b, c : Nat) -> a * b * c = c * a * b

117117 multThree a b c =

118− (a * b * c) ={ sym (multAssociative a b c) }=

119− (a * (b * c)) ={ cong (multCommutative b c) }=

120− (a * (c * b)) ={ multAssociative a c b }=

121− (a * c * b) ={ cong {f = (* b)} (multCommutative a c) }=

122− (c * a * b) QED

118+ (a * b * c) ={ sym (multAssociative a b c) }=

119+ (a * (b * c)) ={ cong (multCommutative b c) }=

120+ (a * (c * b)) ={ multAssociative a c b }=

121+ (a * c * b) ={ cong {f = (* b)} (multCommutative a c) }=

122+ (c * a * b) QED

123123

124124Note that the parentheses are required -- only a simple expression can

125125be on the left of ``={ }=`` or ``QED``. Also, when using preorder

docs/reference/partial-evaluation.rst+2−2

@@ -8,7 +8,7 @@ of functions with arguments annotated as ``%static``.

88

99(This is an implementation of the partial evaluator described in `this

1010ICFP 2010

11−paper <http://eb.host.cs.st-andrews.ac.uk/writings/icfp10.pdf>`__.

11+paper <https://eb.host.cs.st-andrews.ac.uk/writings/icfp10.pdf>`__.

1212Please refer to this for more precise definitions of what follows.)

1313

1414Partial evaluation is switched off by default since Idris 1.0. It can

@@ -207,7 +207,7 @@ Specialising Interpreters

207207A particularly useful situation where partial evaluation becomes

208208effective is in defining an interpreter for a well-typed expression

209209language, defined as follows (see the `Idris tutorial, section

210−4 <http://eb.host.cs.st-andrews.ac.uk/writings/idris-tutorial.pdf>`__

210+4 <https://eb.host.cs.st-andrews.ac.uk/writings/idris-tutorial.pdf>`__

211211for more details on how this works):

212212

213213::

docs/reference/type-directed-search.rst+1−1

@@ -4,7 +4,7 @@ Type Directed Search ``:search``

44

55Idris' ``:search`` command searches for terms according to their

66approximate type signature (much like

7−`Hoogle <http://www.haskell.org/hoogle/>`__ for Haskell). For

7+`Hoogle <https://www.haskell.org/hoogle/>`__ for Haskell). For

88example::

99

1010 Idris> :search e -> List e -> List e

docs/reference/uniqueness-types.rst+2−2

@@ -13,7 +13,7 @@ ideally while giving up as little high level conveniences as possible.

1313

1414They are inspired by linear types, `Uniqueness Types

1515<https://en.wikipedia.org/wiki/Uniqueness_type>`__ in the `Clean

16−<http://wiki.clean.cs.ru.nl/Clean>`__ programming language, and

16+<https://wiki.clean.cs.ru.nl/Clean>`__ programming language, and

1717ownership types and borrowed pointers in the `Rust

1818<https://www.rust-lang.org/>`__ programming language.

1919

@@ -199,7 +199,7 @@ return it in exactly the condition in which it was received!

199199The restriction is that when a ``Borrowed`` type is matched, any

200200pattern variables under the ``Read`` which have a unique type may not

201201be referred to at all on the right hand side (unless they are

202−themselves ``lent`` to another function).

202+themselves lent to another function).

203203

204204Uniqueness information is stored in the type, and in particular in

205205function types. Once we're in a unique context, any new function which

docs/st/index.rst+1−1

@@ -14,7 +14,7 @@ the `Control.ST` library in `Idris`.

1414 Idris Community* has waived all copyright and related or neighbouring

1515 rights to Documentation for Idris.

1616

17− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

17+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1818

1919.. toctree::

2020 :maxdepth: 1

docs/st/introduction.rst+1−1

@@ -3,7 +3,7 @@ Overview

33********

44

55Pure functional languages with dependent types such as `Idris

6−<http://www.idris-lang.org/>`_ support reasoning about programs directly

6+<https://www.idris-lang.org/>`_ support reasoning about programs directly

77in the type system, promising that we can *know* a program will run

88correctly (i.e. according to the specification in its type) simply

99because it compiles.

docs/tutorial/conclusions.rst+5−5

@@ -7,7 +7,7 @@ Further Reading

77Further information about Idris programming, and programming with

88dependent types in general, can be obtained from various sources:

99

10−- The Idris web site (http://www.idris-lang.org/) and by asking

10+- The Idris web site (https://www.idris-lang.org/) and by asking

1111 questions on the mailing list.

1212

1313- The IRC channel ``#idris``, on

@@ -25,7 +25,7 @@ dependent types in general, can be obtained from various sources:

2525 https://github.com/idris-lang/Idris-dev.

2626

2727- Existing projects on the ``Idris Hackers`` web space:

28− http://idris-hackers.github.io.

28+ https://idris-hackers.github.io.

2929

3030- Various papers (e.g. [1]_, [2]_, and [3]_). Although these mostly

3131 describe older versions of Idris.

@@ -36,14 +36,14 @@ dependent types in general, can be obtained from various sources:

3636 Aspects of Declarative Languages (PADL'12), Claudio Russo and

3737 Neng-Fa Zhou (Eds.). Springer-Verlag, Berlin, Heidelberg,

3838 242-257. DOI=10.1007/978-3-642-27694-1_18

39− http://dx.doi.org/10.1007/978-3-642-27694-1_18

39+ https://dx.doi.org/10.1007/978-3-642-27694-1_18

4040

4141.. [2] Edwin C. Brady. 2011. IDRIS ---: systems programming meets full

4242 dependent types. In Proceedings of the 5th ACM workshop on

4343 Programming languages meets program verification (PLPV

4444 '11). ACM, New York, NY, USA,

4545 43-54. DOI=10.1145/1929529.1929536

46− http://doi.acm.org/10.1145/1929529.1929536

46+ https://doi.acm.org/10.1145/1929529.1929536

4747

4848.. [3] Edwin C. Brady and Kevin Hammond. 2010. Scrapping your

4949 inefficient engine: using partial evaluation to improve

@@ -51,4 +51,4 @@ dependent types in general, can be obtained from various sources:

5151 15th ACM SIGPLAN international conference on Functional

5252 programming (ICFP '10). ACM, New York, NY, USA,

5353 297-308. DOI=10.1145/1863543.1863587

54− http://doi.acm.org/10.1145/1863543.1863587

54+ https://doi.acm.org/10.1145/1863543.1863587

docs/tutorial/index.rst+1−1

@@ -15,7 +15,7 @@ existing functional programming language such as Haskell or OCaml.

1515 Idris Community* has waived all copyright and related or neighboring

1616 rights to Documentation for Idris.

1717

18− More information concerning the CC0 can be found online at: http://creativecommons.org/publicdomain/zero/1.0/

18+ More information concerning the CC0 can be found online at: https://creativecommons.org/publicdomain/zero/1.0/

1919

2020

2121.. toctree::

docs/tutorial/introduction.rst+2−2

@@ -6,7 +6,7 @@ Introduction

66

77In conventional programming languages, there is a clear distinction

88between *types* and *values*. For example, in `Haskell

9−<http://www.haskell.org>`_, the following are types, representing

9+<https://www.haskell.org>`_, the following are types, representing

1010integers, characters, lists of characters, and lists of any value

1111respectively:

1212

@@ -49,7 +49,7 @@ Intended Audience

4949

5050This tutorial is intended as a brief introduction to the language, and

5151is aimed at readers already familiar with a functional language such

52−as `Haskell <http://www.haskell.org>`_ or `OCaml <http://ocaml.org>`_.

52+as `Haskell <https://www.haskell.org>`_ or `OCaml <https://ocaml.org>`_.

5353In particular, a certain amount of familiarity with Haskell syntax is

5454assumed, although most concepts will at least be explained

5555briefly. The reader is also assumed to have some interest in using

docs/tutorial/miscellany.rst+1−1

@@ -560,7 +560,7 @@ But what about the type of ``Type``? If we ask Idris it reports:

560560 Type : Type 1

561561

562562If ``Type`` were its own type, it would lead to an inconsistency due to

563−`Girard’s paradox <http://www.cs.cmu.edu/afs/cs.cmu.edu/user/kw/www/scans/girard72thesis.pdf>`_,

563+`Girard’s paradox <https://www.cs.cmu.edu/afs/cs.cmu.edu/user/kw/www/scans/girard72thesis.pdf>`_,

564564so internally there is a *hierarchy* of types (or *universes*):

565565

566566.. code-block:: idris

docs/tutorial/syntax.rst+3−3

@@ -196,16 +196,16 @@ syntax rule, we can even go as far as:

196196 Aspects of Declarative Languages (PADL'12), Claudio Russo and

197197 Neng-Fa Zhou (Eds.). Springer-Verlag, Berlin, Heidelberg,

198198 242-257. DOI=10.1007/978-3-642-27694-1_18

199− http://dx.doi.org/10.1007/978-3-642-27694-1_18

199+ https://dx.doi.org/10.1007/978-3-642-27694-1_18

200200

201201.. [2] Edwin C. Brady. 2011. IDRIS ---: systems programming meets full

202202 dependent types. In Proceedings of the 5th ACM workshop on

203203 Programming languages meets program verification (PLPV

204204 '11). ACM, New York, NY, USA,

205205 43-54. DOI=10.1145/1929529.1929536

206− http://doi.acm.org/10.1145/1929529.1929536

206+ https://doi.acm.org/10.1145/1929529.1929536

207207

208208.. [3] Edwin Brady and Kevin Hammond. 2010. Correct-by-Construction

209209 Concurrency: Using Dependent Types to Verify Implementations of

210210 Effectful Resource Usage Protocols. Fundam. Inf. 102, 2 (April

211− 2010), 145-176. http://dl.acm.org/citation.cfm?id=1883636

211+ 2010), 145-176. https://dl.acm.org/citation.cfm?id=1883636

idris-tutorial.pdf

Binary file not shown.

idris.cabal+103−49

@@ -1,10 +1,11 @@

1+Cabal-Version: 2.4

12Name: idris

23Version: 1.3.2

3−License: BSD3

4+License: BSD-3-Clause

45License-file: LICENSE

56Author: Edwin Brady

67Maintainer: Edwin Brady <eb@cs.st-andrews.ac.uk>

7−Homepage: http://www.idris-lang.org/

8+Homepage: https://www.idris-lang.org/

89Bug-reports: https://github.com/idris-lang/Idris-dev/issues

910

1011Stability: Beta

@@ -16,7 +17,7 @@ Description: Idris is a general purpose language with full dependent types.

1617 meaning that some aspects of a program's behaviour can be

1718 specified precisely in the type. The language is closely

1819 related to Epigram and Agda. There is a tutorial at

19− <http://www.idris-lang.org/documentation>.

20+ <https://www.idris-lang.org/documentation>.

2021 Features include:

2122 .

2223 * Full, first class, dependent types with dependent pattern matching

@@ -41,42 +42,25 @@ Description: Idris is a general purpose language with full dependent types.

4142 .

4243 * Hugs style interactive environment

4344

44−Cabal-Version: >= 1.22

45−

4645Build-type: Custom

4746

4847Tested-With: GHC == 7.10.3, GHC == 8.0.1

4948

49+-- NOTE: due to https://github.com/haskell/cabal/issues/6125 the use of ** is

50+-- heavily discouraged.

5051Data-files: idrisdoc/styles.css

51− jsrts/jsbn/jsbn-browser.js

52− jsrts/jsbn/jsbn-node.js

53− jsrts/Runtime-common.js

54− jsrts/Runtime-javascript.js

55− jsrts/Runtime-node.js

52+ jsrts/jsbn/*.js

53+ jsrts/*.js

5654 jsrts/jsbn/LICENSE

57− rts/arduino/idris_main.c

58− rts/idris_bitstring.c

59− rts/idris_bitstring.h

60− rts/idris_gc.c

61− rts/idris_gc.h

62− rts/idris_gmp.c

63− rts/idris_gmp.h

64− rts/idris_heap.c

65− rts/idris_heap.h

66− rts/idris_main.c

67− rts/idris_net.c

68− rts/idris_net.h

69− rts/idris_opts.c

70− rts/idris_opts.h

71− rts/idris_rts.c

72− rts/idris_rts.h

73− rts/idris_stats.c

74− rts/idris_stats.h

75− rts/idris_stdfgn.c

76− rts/idris_stdfgn.h

77− rts/mini-gmp.c

78− rts/mini-gmp.h

79− rts/libtest.c

55+ rts/Makefile

56+ rts/*.c

57+ rts/seL4/*.c

58+ rts/arduino/*.c

59+ rts/windows/*.c

60+ rts/windows/*.h

61+ rts/*.h

62+ rts/seL4/CMakeLists.txt

63+ rts/seL4/README.md

8064

8165Extra-doc-files:

8266 CHANGELOG.md

@@ -86,13 +70,75 @@ Extra-doc-files:

8670 README.md

8771 RELEASE-CHECKS.md

8872 idris-tutorial.pdf

73+ man/idris.1

8974 samples/effects/*.idr

9075 samples/misc/*.idr

91− samples/misc/*.lidr

9276 samples/tutorial/*.idr

77+ samples/ST/*.idr

78+ samples/ST/Graphics/*.idr

79+ samples/ST/Net/*.idr

80+ samples/misc/*.lidr

9381

9482-- extra-source-files is generated by Setup.hs using `git --ls-files`.

9583Extra-source-files:

84+ Makefile

85+ config.mk

86+ custom.mk-alldeps

87+ mkpkg.sh

88+ stack-shell.nix

89+ stack.yaml

90+ stylize.sh

91+ win-release.sh

92+

93+ benchmarks/*.pl

94+ benchmarks/fasta/*.idr

95+ benchmarks/fasta/*.ipkg

96+ benchmarks/pidigits/*.idr

97+ benchmarks/pidigits/*.ipkg

98+ benchmarks/quasigroups/*.idr

99+ benchmarks/quasigroups/*.ipkg

100+ benchmarks/trivial/*.idr

101+ benchmarks/trivial/*.ipkg

102+ benchmarks/quasigroups/board

103+

104+ icons/*.png

105+ icons/*.ico

106+ icons/*.rc

107+ icons/*.svg

108+ icons/*.xml

109+

110+ libs/**/*.idr

111+ libs/**/*.ipkg

112+ libs/**/*.txt

113+ libs/Makefile

114+ libs/base/Makefile

115+ libs/contrib/Makefile

116+ libs/effects/Makefile

117+ libs/prelude/Makefile

118+ libs/pruviloj/Makefile

119+

120+ scripts/generate-multi-ghc-travis-template

121+ scripts/runidris

122+ scripts/runidris-node

123+

124+ src/.ghci

125+

126+ test/*.md

127+ test/*.hs

128+ test/**/*.idr

129+ test/**/*.lidr

130+ test/**/*.ipkg

131+ test/**/*.out

132+ test/**/*.sh

133+ test/**/*.c

134+ test/**/*.h

135+ test/**/*.in

136+ test/**/*.txt

137+ test/**/*.js

138+ test/base001/Makefile

139+ test/ffi004/theOtherType

140+ test/ffi004/theType

141+ test/scripts/timeout

96142

97143source-repository head

98144 type: git

@@ -100,7 +146,7 @@ source-repository head

100146

101147custom-setup

102148 setup-depends:

103− Cabal >= 1.10 && <2.5,

149+ Cabal >= 2.4 && < 3.1,

104150 base >= 4 && <5,

105151 directory,

106152 filepath,

@@ -261,26 +307,29 @@ Library

261307 Util.Pretty

262308 , Util.Net

263309

264−

265−

266− -- Auto Generated

267310 , Paths_idris

268311 , Version_idris

269312 , Tools_idris

270313 , BuildFlags_idris

271314

315+ -- Auto Generated

316+ Autogen-modules: Paths_idris

317+ , Version_idris

318+ , Tools_idris

319+ , BuildFlags_idris

320+

272321 Build-depends: base >=4 && <5

273322 , aeson >= 0.6 && < 1.5

274323 , annotated-wl-pprint >= 0.7 && < 0.8

275− , ansi-terminal < 0.10

324+ , ansi-terminal < 0.11

276325 , ansi-wl-pprint < 0.7

277326 , array >= 0.4.0.1 && < 0.6

278327 , base64-bytestring < 1.1

279328 , binary >= 0.8.4.1 && < 0.9

280329 , blaze-html >= 0.6.1.3 && < 0.10

281− , blaze-markup >= 0.5.2.1 && < 0.9

330+ , blaze-markup >= 0.5.2.1 && < 0.10

282331 , bytestring < 0.11

283− , cheapskate >= 0.1.1 && < 0.2

332+ , cheapskate >= 0.1.1.2 && < 0.2

284333 , code-page >= 0.1 && < 0.3

285334 , containers >= 0.5 && < 0.7

286335 , deepseq < 1.5

@@ -289,10 +338,10 @@ Library

289338 , fingertree >= 0.1.4.1 && < 0.2

290339 , haskeline >= 0.7 && < 0.8

291340 , ieee754 >= 0.7 && < 0.9

292− , megaparsec >= 7.0.4 && < 8

341+ , megaparsec >= 7.0.4 && < 9

293342 , mtl >= 2.1 && < 2.3

294− , network >= 2.7 && < 2.9

295− , optparse-applicative >= 0.13 && < 0.15

343+ , network >= 2.7 && < 3.1.2

344+ , optparse-applicative >= 0.13 && < 0.16

296345 , parser-combinators >= 1.0.0

297346 , pretty < 1.2

298347 , process < 1.7

@@ -300,8 +349,8 @@ Library

300349 , safe >= 0.3.9

301350 , split < 0.3

302351 , terminal-size < 0.4

303− , text >=1.2.1.0 && < 1.3

304− , time >= 1.4 && < 1.9

352+ , text >=1.2.1.0 && < 1.4

353+ , time >= 1.4 && < 2.0

305354 , transformers >= 0.5 && < 0.6

306355 , uniplate >=1.6 && < 1.7

307356 , unordered-containers < 0.3

@@ -309,11 +358,12 @@ Library

309358 , vector < 0.13

310359 , vector-binary-instances < 0.3

311360 , zip-archive > 0.2.3.5 && < 0.5

312− , fsnotify >= 0.2 && < 2.2

361+ , fsnotify >= 0.2 && < 0.4

313362 , async < 2.3

314363

315364 if !impl(ghc >= 8.0)

316− Build-Depends: semigroups == 0.18.*

365+ Build-Depends: semigroups == 0.18.*

366+ , fail == 4.9.0.*

317367

318368 Default-Language: Haskell2010

319369 ghc-prof-options: -auto-all -caf-all

@@ -332,6 +382,7 @@ Library

332382 cpp-options: -DIDRIS_GMP

333383 if flag(freestanding)

334384 other-modules: Target_idris

385+ autogen-modules: Target_idris

335386 cpp-options: -DFREESTANDING

336387 if flag(CI)

337388 ghc-options: -Werror

@@ -365,7 +416,7 @@ Test-suite regression-and-feature-tests

365416 , filepath

366417 , directory

367418 , haskeline >= 0.7

368− , optparse-applicative >= 0.13 && < 0.15

419+ , optparse-applicative >= 0.13 && < 0.16

369420 , tagged

370421 , tasty >= 0.8

371422 , tasty-golden >= 2.0

@@ -380,6 +431,7 @@ Test-suite regression-and-feature-tests

380431

381432Executable idris-codegen-c

382433 Main-is: Main.hs

434+ autogen-modules: Paths_idris

383435 other-modules: Paths_idris

384436 hs-source-dirs: codegen/idris-codegen-c

385437

@@ -395,6 +447,7 @@ Executable idris-codegen-c

395447

396448Executable idris-codegen-javascript

397449 Main-is: Main.hs

450+ autogen-modules: Paths_idris

398451 other-modules: Paths_idris

399452 hs-source-dirs: codegen/idris-codegen-javascript

400453

@@ -410,6 +463,7 @@ Executable idris-codegen-javascript

410463

411464Executable idris-codegen-node

412465 Main-is: Main.hs

466+ autogen-modules: Paths_idris

413467 other-modules: Paths_idris

414468 hs-source-dirs: codegen/idris-codegen-node

415469

libs/base/Control/Isomorphism.idr+20−23

@@ -17,21 +17,22 @@ record Iso a b where

1717

1818-- Isomorphism properties

1919

20−||| Isomorphism is Reflexive

20+||| Isomorphism is reflexive

2121isoRefl : Iso a a

22−isoRefl = MkIso id id (\x => Refl) (\x => Refl)

22+isoRefl = MkIso id id (\_ => Refl) (\_ => Refl)

2323

2424||| Isomorphism is transitive

2525isoTrans : Iso a b -> Iso b c -> Iso a c

2626isoTrans (MkIso to from toFrom fromTo) (MkIso to' from' toFrom' fromTo') =

27− MkIso (\x => to' (to x))

28− (\y => from (from' y))

29− (\y => (to' (to (from (from' y)))) ={ cong (toFrom (from' y)) }=

30− (to' (from' y)) ={ toFrom' y }=

31− y QED)

32− (\x => (from (from' (to' (to x)))) ={ cong (fromTo' (to x)) }=

33− (from (to x)) ={ fromTo x }=

34− x QED)

27+ MkIso xto xfrom xtoFrom xfromTo where

28+ xto : a -> c

29+ xto = to' . to

30+ xfrom : c -> a

31+ xfrom = from . from'

32+ xtoFrom : (z : c) -> xto (xfrom z) = z

33+ xtoFrom z = rewrite toFrom $ from' z in toFrom' z

34+ xfromTo : (x : a) -> xfrom (xto x) = x

35+ xfromTo x = rewrite fromTo' (to x) in fromTo x

3536

3637Category Iso where

3738 id = isoRefl

@@ -99,8 +100,7 @@ eitherBotRight = isoTrans eitherComm eitherBotLeft

99100

100101||| Isomorphism is a congruence with regards to disjunction

101102eitherCong : Iso a a' -> Iso b b' -> Iso (Either a b) (Either a' b')

102−eitherCong {a = a} {a' = a'} {b = b} {b' = b'}

103− (MkIso to from toFrom fromTo)

103+eitherCong (MkIso to from toFrom fromTo)

104104 (MkIso to' from' toFrom' fromTo') =

105105 MkIso (eitherMap to to') (eitherMap from from') ok1 ok2

106106 where eitherMap : (c -> c') -> (d -> d') -> Either c d -> Either c' d'

@@ -143,9 +143,7 @@ pairAssoc = MkIso to from ok1 ok2

143143

144144||| Conjunction with truth is a no-op

145145pairUnitRight : Iso (a, ()) a

146−pairUnitRight = MkIso fst (\x => (x, ())) (\x => Refl) ok

147− where ok : (x : (a, ())) -> (fst x, ()) = x

148− ok (x, ()) = Refl

146+pairUnitRight = MkIso fst (\x => (x, ())) (\_ => Refl) (\(_, ()) => Refl)

149147

150148||| Conjunction with truth is a no-op

151149pairUnitLeft : Iso ((), a) a

@@ -161,8 +159,7 @@ pairBotRight = isoTrans pairComm pairBotLeft

161159

162160||| Isomorphism is a congruence with regards to conjunction

163161pairCong : Iso a a' -> Iso b b' -> Iso (a, b) (a', b')

164−pairCong {a = a} {a' = a'} {b = b} {b' = b'}

165− (MkIso to from toFrom fromTo)

162+pairCong (MkIso to from toFrom fromTo)

166163 (MkIso to' from' toFrom' fromTo') =

167164 MkIso to'' from'' iso1 iso2

168165 where to'' : (a, b) -> (a', b')

@@ -205,7 +202,7 @@ distribLeft = MkIso to from toFrom fromTo

205202

206203||| Products distribute over sums

207204distribRight : Iso (a, Either b c) (Either (a, b) (a, c))

208−distribRight {a} {b} {c} = (pairComm `isoTrans` distribLeft) `isoTrans` eitherCong pairComm pairComm

205+distribRight = (pairComm `isoTrans` distribLeft) `isoTrans` eitherCong pairComm pairComm

209206

210207

211208-- Enable preorder reasoning syntax over isomorphisms

@@ -222,7 +219,7 @@ step a iso1 iso2 = isoTrans iso1 iso2

222219-- Isomorphisms over Maybe

223220||| Isomorphism is a congruence with respect to Maybe

224221maybeCong : Iso a b -> Iso (Maybe a) (Maybe b)

225−maybeCong {a} {b} (MkIso to from toFrom fromTo) = MkIso (map to) (map from) ok1 ok2

222+maybeCong (MkIso to from toFrom fromTo) = MkIso (map to) (map from) ok1 ok2

226223 where ok1 : (y : Maybe b) -> map to (map from y) = y

227224 ok1 Nothing = Refl

228225 ok1 (Just x) = (Just (to (from x))) ={ cong (toFrom x) }= (Just x) QED

@@ -253,7 +250,7 @@ maybeVoidUnit = (Maybe Void) ={ maybeEither }=

253250 () QED

254251

255252eitherMaybeLeftMaybe : Iso (Either (Maybe a) b) (Maybe (Either a b))

256−eitherMaybeLeftMaybe {a} {b} =

253+eitherMaybeLeftMaybe =

257254 (Either (Maybe a) b) ={ eitherCongLeft maybeEither }=

258255 (Either (Either a ()) b) ={ eitherAssoc }=

259256 (Either a (Either () b)) ={ eitherCongRight eitherComm }=

@@ -263,7 +260,7 @@ eitherMaybeLeftMaybe {a} {b} =

263260

264261

265262eitherMaybeRightMaybe : Iso (Either a (Maybe b)) (Maybe (Either a b))

266−eitherMaybeRightMaybe {a} {b} =

263+eitherMaybeRightMaybe =

267264 (Either a (Maybe b)) ={ eitherComm }=

268265 (Either (Maybe b) a) ={ eitherMaybeLeftMaybe }=

269266 (Maybe (Either b a)) ={ maybeCong eitherComm }=

@@ -288,8 +285,8 @@ maybeIsoS = MkIso forth back fb bf

288285 fb (FS x) = Refl

289286

290287finZeroBot : Iso (Fin 0) Void

291−finZeroBot = MkIso (\x => void (uninhabited x))

292− (\x => void x)

288+finZeroBot = MkIso (void . uninhabited)

289+ void

293290 (\x => void x)

294291 (\x => void (uninhabited x))

295292

libs/base/Data/Fin.idr+9

@@ -65,6 +65,11 @@ weakenN : (n : Nat) -> Fin m -> Fin (m + n)

6565weakenN n FZ = FZ

6666weakenN n (FS f) = FS (weakenN n f)

6767

68+||| Weaken the bound on a Fin using an inequality proof

69+weakenLTE : LTE n m -> Fin n -> Fin m

70+weakenLTE (LTESucc p) FZ = FZ

71+weakenLTE (LTESucc p) (FS f) = FS $ weakenLTE p f

72+

6873||| Attempt to tighten the bound on a Fin.

6974||| Return `Left` if the bound could not be tightened, or `Right` if it could.

7075strengthen : Fin (S n) -> Either (Fin (S n)) (Fin n)

@@ -101,6 +106,10 @@ implementation MinBound (Fin (S n)) where

101106implementation MaxBound (Fin (S n)) where

102107 maxBound = last

103108

109+||| Add two Fins

110+addFin : (x : Fin n) -> (y : Fin m) -> Fin (finToNat x + m)

111+addFin FZ y = y

112+addFin (FS x) y = FS $ addFin x y

104113

105114-- Construct a Fin from an integer literal which must fit in the given Fin

106115

libs/base/Data/List/Quantifiers.idr+5

@@ -75,3 +75,8 @@ all d (x::xs) with (d x)

7575 case all d xs of

7676 Yes prf' => Yes (prf :: prf')

7777 No prf' => No (notAllThere prf')

78+

79+||| Given a proof of membership for some element, extract the property proof for it

80+indexAll : Elem x xs -> All p xs -> p x

81+indexAll Here (p::_ ) = p

82+indexAll (There e) ( _::ps) = indexAll e ps

libs/base/Data/So.idr+11−1

@@ -12,7 +12,7 @@ module Data.So

1212||| If you find yourself using `So` for something other than primitive types,

1313||| it may be appropriate to define a type of evidence for the property that you

1414||| care about instead.

15−data So : Bool -> Type where

15+data So : Bool -> Type where

1616 Oh : So True

1717

1818implementation Uninhabited (So False) where

@@ -23,4 +23,14 @@ choose : (b : Bool) -> Either (So b) (So (not b))

2323choose True = Left Oh

2424choose False = Right Oh

2525

26+||| Absurd when you have proof that both `b` and `not b` is true.

27+export

28+soAbsurd : So b -> So (not b) -> Void

29+soAbsurd sb snb with (sb)

30+ | Oh = uninhabited snb

31+

32+||| Transmission between usage of value-level `not` and type-level `Not`.

33+export

34+soNotToNotSo : So (not b) -> Not (So b)

35+soNotToNotSo = flip soAbsurd

2636

libs/contrib/Control/Algebra/Laws.idr+128−80

@@ -6,98 +6,146 @@ import Interfaces.Verified

66

77%access export

88

9−||| A prof that -0 = 0 in any verified group.

10−inverseNeutralIsNeutral : VerifiedGroup t => inverse (the t A.neutral) = A.neutral

9+||| -(-x) = x in any verified group.

10+inverseSquaredIsIdentity : VerifiedGroup t => (x : t) ->

11+ inverse (inverse x) = x

12+inverseSquaredIsIdentity x =

13+ let

14+ ix = inverse x

15+ iix = inverse ix

16+ in

17+ rewrite sym $ monoidNeutralIsNeutralR iix in

18+ rewrite sym $ groupInverseIsInverseL x in

19+ rewrite sym $ semigroupOpIsAssociative x ix iix in

20+ rewrite groupInverseIsInverseL ix in

21+ monoidNeutralIsNeutralL x

22+

23+||| -0 = 0 in any verified group.

24+inverseNeutralIsNeutral : VerifiedGroup t =>

25+ inverse (the t A.neutral) = A.neutral

1126inverseNeutralIsNeutral {t} =

12− let zero = the t neutral

13− step1 = cong {f = (<+> inverse zero)} (the (zero = zero) Refl)

14− step2 = replace {P = \x => zero <+> inverse zero = x} (groupInverseIsInverseL zero) step1

15− in

16− replace {P = \x => x = neutral} (monoidNeutralIsNeutralR $ inverse zero) step2

27+ let e = the t neutral in

28+ rewrite sym $ cong {f = inverse} (groupInverseIsInverseL e) in

29+ rewrite monoidNeutralIsNeutralR $ inverse e in

30+ inverseSquaredIsIdentity e

1731

18−||| A proof that -(-x) = x in any verified group.

19−inverseSquaredIsIdentity : VerifiedGroup t => (x : t) -> inverse (inverse x) = x

20−inverseSquaredIsIdentity {t} x =

21− let zero = the t neutral

22− step1 = cong {f = (x <+>)} (groupInverseIsInverseL (inverse x))

23− step2 = replace {P = \r => r = x <+> neutral} (semigroupOpIsAssociative x (inverse x) (inverse $ inverse x)) step1

24− step3 = replace {P = \r => r <+> inverse (inverse x) = x <+> neutral} (groupInverseIsInverseL x) step2

25− step4 = replace {P = \r => r = x <+> neutral} (monoidNeutralIsNeutralR (inverse $ inverse x)) step3

26− in

27− replace {P = \r => inverse (inverse x) = r} (monoidNeutralIsNeutralL x) step4

32+||| -(x + y) = -y + -x in any verified group.

33+inverseOfSum : VerifiedGroup t => (l, r : t) ->

34+ inverse (l <+> r) = inverse r <+> inverse l

35+inverseOfSum {t} l r =

36+ let

37+ e = the t neutral

38+ il = inverse l

39+ ir = inverse r

40+ sum = l <+> r

41+ ilr = inverse sum

42+ iril = ir <+> il

43+ ile = il <+> e

44+ in

45+ -- expand

46+ rewrite sym $ monoidNeutralIsNeutralR ilr in

47+ rewrite sym $ groupInverseIsInverseR r in

48+ rewrite sym $ monoidNeutralIsNeutralL ir in

49+ rewrite sym $ groupInverseIsInverseR l in

50+ -- shuffle

51+ rewrite semigroupOpIsAssociative ir il l in

52+ rewrite sym $ semigroupOpIsAssociative iril l r in

53+ rewrite sym $ semigroupOpIsAssociative iril sum ilr in

54+ -- contract

55+ rewrite sym $ monoidNeutralIsNeutralL il in

56+ rewrite groupInverseIsInverseL sum in

57+ rewrite sym $ semigroupOpIsAssociative (ir <+> ile) l ile in

58+ rewrite semigroupOpIsAssociative l il e in

59+ rewrite groupInverseIsInverseL l in

60+ rewrite monoidNeutralIsNeutralL e in

61+ Refl

2862

29−||| A proof that -(x + y) = -x - y in any verified abelian group.

30−inverseDistributesOverGroupOp : VerifiedAbelianGroup t => (l, r : t) -> inverse (l <+> r) = inverse l <+> inverse r

31−inverseDistributesOverGroupOp {t} l r =

32− let step1 = replace {P = \x => x = neutral} (sym $ groupInverseIsInverseL (l <+> r)) $ the (the t neutral = neutral) Refl

33− step2 = cong {f = ((inverse r) <+>) . ((inverse l) <+>)} step1

34− step3 = replace {P = \x => inverse r <+> (inverse l <+> (l <+> r <+> inverse (l <+> r))) = inverse r <+> x} (monoidNeutralIsNeutralL (inverse l)) step2

35− step4 = replace {P = \x => x = inverse r <+> inverse l} (semigroupOpIsAssociative (inverse r) (inverse l) (l <+> r <+> inverse (l <+> r))) step3

36− step5 = replace {P = \x => x = inverse r <+> inverse l} (semigroupOpIsAssociative (inverse r <+> inverse l) (l <+> r) (inverse (l <+> r))) step4

37− step6 = replace {P = \x => x <+> inverse (l <+> r) = inverse r <+> inverse l} (semigroupOpIsAssociative (inverse r <+> inverse l) l r) step5

38− step7 = replace {P = \x => x <+> r <+> inverse (l <+> r) = inverse r <+> inverse l} (sym $ semigroupOpIsAssociative (inverse r) (inverse l) l) step6

39− step8 = replace {P = \x => inverse r <+> x <+> r <+> inverse (l <+> r) = inverse r <+> inverse l} (groupInverseIsInverseR l) step7

40− step9 = replace {P = \x => x <+> r <+> inverse (l <+> r) = inverse r <+> inverse l} (monoidNeutralIsNeutralL (inverse r)) step8

41− step10 = replace {P = \x => x <+> inverse (l <+> r) = inverse r <+> inverse l} (groupInverseIsInverseR r) step9

42− step11 = replace {P = \x => x = inverse r <+> inverse l} (monoidNeutralIsNeutralR (inverse (l <+> r))) step10

43− in

44− replace {P = \x => inverse (l <+> r) = x} (abelianGroupOpIsCommutative (inverse r) (inverse l)) step11

63+||| -(x + y) = -x + -y in any verified abelian group.

64+inverseDistributesOverGroupOp : VerifiedAbelianGroup t => (l, r : t) ->

65+ inverse (l <+> r) = inverse l <+> inverse r

66+inverseDistributesOverGroupOp l r =

67+ rewrite abelianGroupOpIsCommutative (inverse l) (inverse r) in

68+ inverseOfSum l r

4569

46−||| A proof that anything multiplied by zero yields zero back.

47−multNeutralAbsorbingL : VerifiedRingWithUnity t => (r : t) -> A.neutral <.> r = A.neutral

48−multNeutralAbsorbingL r =

49− let step1 = the (unity <.> r = r) (ringWithUnityIsUnityR r)

50− step2 = replace {P = \x => x <.> r = r} (sym $ monoidNeutralIsNeutralR unity) step1

51− step3 = replace {P = \x => x = r} (ringOpIsDistributiveR neutral unity r) step2

52− step4 = replace {P = \x => neutral <.> r <+> x = r} (ringWithUnityIsUnityR r) step3

53− step5 = cong {f = \x => x <+> inverse r} step4

54− step6 = replace {P = \x => x = r <+> inverse r} (sym $ semigroupOpIsAssociative (neutral <.> r) r (inverse r)) step5

55− step7 = replace {P = \x => neutral <.> r <+> x = x} (groupInverseIsInverseL r) step6

56− in

57− replace {P = \x => x = neutral} (monoidNeutralIsNeutralL (neutral <.> r)) step7

70+||| Anything multiplied by zero yields zero back in a verified ring.

71+multNeutralAbsorbingL : VerifiedRing t => (r : t) ->

72+ A.neutral <.> r = A.neutral

73+multNeutralAbsorbingL {t} r =

74+ let

75+ e = the t neutral

76+ ir = inverse r

77+ exr = e <.> r

78+ iexr = inverse exr

79+ in

80+ rewrite sym $ monoidNeutralIsNeutralR exr in

81+ rewrite sym $ groupInverseIsInverseR exr in

82+ rewrite sym $ semigroupOpIsAssociative iexr exr ((iexr <+> exr) <.> r) in

83+ rewrite groupInverseIsInverseR exr in

84+ rewrite sym $ ringOpIsDistributiveR e e r in

85+ rewrite monoidNeutralIsNeutralR e in

86+ groupInverseIsInverseR exr

5887

59−||| A proof that anything multiplied by zero yields zero back.

60−multNeutralAbsorbingR : VerifiedRingWithUnity t => (l : t) -> l <.> A.neutral = A.neutral

61−multNeutralAbsorbingR l =

62− let step1 = the (l <.> unity = l) (ringWithUnityIsUnityL l)

63− step2 = replace {P = \x => l <.> x = l} (sym $ monoidNeutralIsNeutralR unity) step1

64− step3 = replace {P = \x => x = l} (ringOpIsDistributiveL l neutral unity) step2

65− step4 = replace {P = \x => l <.> neutral <+> x = l} (ringWithUnityIsUnityL l) step3

66− step5 = cong {f = \x => x <+> inverse l} step4

67− step6 = replace {P = \x => x = l <+> inverse l} (sym $ semigroupOpIsAssociative (l <.> neutral) l (inverse l)) step5

68− step7 = replace {P = \x => l <.> neutral <+> x = x} (groupInverseIsInverseL l) step6

69− in

70− replace {P = \x => x = neutral} (monoidNeutralIsNeutralL (l <.> neutral)) step7

88+||| Anything multiplied by zero yields zero back in a verified ring.

89+multNeutralAbsorbingR : VerifiedRing t => (l : t) ->

90+ l <.> A.neutral = A.neutral

91+multNeutralAbsorbingR {t} l =

92+ let

93+ e = the t neutral

94+ il = inverse l

95+ lxe = l <.> e

96+ ilxe = inverse lxe

97+ in

98+ rewrite sym $ monoidNeutralIsNeutralL lxe in

99+ rewrite sym $ groupInverseIsInverseL lxe in

100+ rewrite semigroupOpIsAssociative (l <.> (lxe <+> ilxe)) lxe ilxe in

101+ rewrite groupInverseIsInverseL lxe in

102+ rewrite sym $ ringOpIsDistributiveL l e e in

103+ rewrite monoidNeutralIsNeutralL e in

104+ groupInverseIsInverseL lxe

71105

72−||| A proof that inverse operator can be extracted before multiplication

106+||| Inverse operator can be extracted before multiplication.

73107||| (-x)y = -(xy)

74−multInverseInversesL : VerifiedRingWithUnity t => (l, r : t) -> inverse l <.> r = inverse (l <.> r)

108+multInverseInversesL : VerifiedRing t => (l, r : t) ->

109+ inverse l <.> r = inverse (l <.> r)

75110multInverseInversesL l r =

76− let step1 = replace {P = \x => x <.> r = neutral} (sym $ groupInverseIsInverseL l) (multNeutralAbsorbingL r)

77− step2 = replace {P = \x => x = neutral} (ringOpIsDistributiveR l (inverse l) r) step1

78− step3 = cong {f = ((inverse (l <.> r)) <+>)} step2

79− step4 = replace {P = \x => inverse (l <.> r) <+> (l <.> r <+> inverse l <.> r) = x} (monoidNeutralIsNeutralL (inverse (l <.> r))) step3

80− step5 = replace {P = \x => x = inverse (l <.> r)} (semigroupOpIsAssociative (inverse (l <.> r)) (l <.> r) (inverse l <.> r)) step4

81− step6 = replace {P = \x => x <+> inverse l <.> r = inverse (l <.> r)} (groupInverseIsInverseR (l <.> r)) step5

82− in

83− replace {P = \x => x = inverse (l <.> r)} (monoidNeutralIsNeutralR (inverse l <.> r)) step6

111+ let

112+ il = inverse l

113+ lxr = l <.> r

114+ ilxr = il <.> r

115+ i_lxr = inverse lxr

116+ in

117+ rewrite sym $ monoidNeutralIsNeutralR ilxr in

118+ rewrite sym $ groupInverseIsInverseR lxr in

119+ rewrite sym $ semigroupOpIsAssociative i_lxr lxr ilxr in

120+ rewrite sym $ ringOpIsDistributiveR l il r in

121+ rewrite groupInverseIsInverseL l in

122+ rewrite multNeutralAbsorbingL r in

123+ monoidNeutralIsNeutralL i_lxr

84124

85−||| A proof that inverse operator can be extracted before multiplication

125+||| Inverse operator can be extracted before multiplication.

86126||| x(-y) = -(xy)

87−multInverseInversesR : VerifiedRingWithUnity t => (l, r : t) -> l <.> inverse r = inverse (l <.> r)

127+multInverseInversesR : VerifiedRing t => (l, r : t) ->

128+ l <.> inverse r = inverse (l <.> r)

88129multInverseInversesR l r =

89− let step1 = replace {P = \x => l <.> x = neutral} (sym $ groupInverseIsInverseL r) (multNeutralAbsorbingR l)

90− step2 = replace {P = \x => x = neutral} (ringOpIsDistributiveL l r (inverse r)) step1

91− step3 = cong {f = ((inverse (l <.> r)) <+>)} step2

92− step4 = replace {P = \x => inverse (l <.> r) <+> (l <.> r <+> l <.> inverse r) = x} (monoidNeutralIsNeutralL (inverse (l <.> r))) step3

93− step5 = replace {P = \x => x = inverse (l <.> r)} (semigroupOpIsAssociative (inverse (l <.> r)) (l <.> r) (l <.> inverse r)) step4

94− step6 = replace {P = \x => x <+> l <.> inverse r = inverse (l <.> r)} (groupInverseIsInverseR (l <.> r)) step5

95− in

96− replace {P = \x => x = inverse (l <.> r)} (monoidNeutralIsNeutralR (l <.> inverse r)) step6

130+ let

131+ ir = inverse r

132+ lxr = l <.> r

133+ lxir = l <.> ir

134+ ilxr = inverse lxr

135+ in

136+ rewrite sym $ monoidNeutralIsNeutralL lxir in

137+ rewrite sym $ groupInverseIsInverseL lxr in

138+ rewrite semigroupOpIsAssociative lxir lxr ilxr in

139+ rewrite sym $ ringOpIsDistributiveL l ir r in

140+ rewrite groupInverseIsInverseR r in

141+ rewrite multNeutralAbsorbingR l in

142+ monoidNeutralIsNeutralR ilxr

97143

98−||| A proof that multiplication of inverses is the same as multiplication of original

99−||| elements. (-x)(-y) = xy

100−multNegativeByNegativeIsPositive : VerifiedRingWithUnity t => (l, r : t) -> inverse l <.> inverse r = l <.> r

144+||| Multiplication of inverses is the same as multiplication of

145+||| original elements.

146+||| (-x)(-y) = xy

147+multNegativeByNegativeIsPositive : VerifiedRing t => (l, r : t) ->

148+ inverse l <.> inverse r = l <.> r

101149multNegativeByNegativeIsPositive l r =

102150 rewrite multInverseInversesR (inverse l) r in

103151 rewrite sym $ multInverseInversesL (inverse l) r in

libs/contrib/Data/Combinators.idr+2−2

@@ -26,13 +26,13 @@ infixl 9 ...

2626(...) = (.) . (.)

2727

2828||| Warbler, as named in "To Mock a Mockingbird".

29−||| See http://code.jsoftware.com/wiki/Vocabulary/tilde

29+||| See https://code.jsoftware.com/wiki/Vocabulary/tilde

3030||| Equivalent to `join` on the Reader monad (`(->) e` in Haskell)

3131reflex : (a -> a -> b) -> (a -> b)

3232reflex f x = f x x

3333

3434||| Phoenix, according to Data.Aviary.

35−||| See http://code.jsoftware.com/wiki/Vocabulary/fork.

35+||| See https://code.jsoftware.com/wiki/Vocabulary/fork.

3636||| Equivalent to `liftA2` on the Reader monad (`(->) e` in Haskell)

3737fork2 : (b -> c -> d) -> (a -> b) -> (a -> c) -> (a -> d)

3838fork2 f g h x = f (g x) (h x)

libs/contrib/Data/List/Extra.idrdeleted−46

@@ -1,46 +0,0 @@

1−module Data.List.Extra

2−

3−%default total

4−%access export

5−

6−||| The final segment of the accumulator is the final segment of the result.

7−reverseOntoAcc : (xs, ys, zs : List a) ->

8− reverseOnto (ys ++ zs) xs = (reverseOnto ys xs) ++ zs

9−reverseOntoAcc [] _ _ = Refl

10−reverseOntoAcc (x :: xs) (ys) (zs) = reverseOntoAcc xs (x :: ys) zs

11−

12−||| Serves as a specification for reverseOnto.

13−reverseOntoSpec : (xs, ys : List a) -> reverseOnto xs ys = reverse ys ++ xs

14−reverseOntoSpec xs ys = reverseOntoAcc ys [] xs

15−

16−||| The reverse of an empty list is an empty list. Together with reverseCons,

17−||| serves as a specification for reverse.

18−reverseNil : reverse [] = []

19−reverseNil = Refl

20−

21−||| The reverse of a cons is the reverse of the tail followed by the head.

22−||| Together with reverseNil serves as a specification for reverse.

23−reverseCons : (x : a) -> (xs : List a) -> reverse (x::xs) = reverse xs ++ [x]

24−reverseCons x xs = reverseOntoSpec [x] xs

25−

26−||| Reversing an append is appending reversals backwards.

27−reverseAppend : (xs, ys : List a) ->

28− reverse (xs ++ ys) = reverse ys ++ reverse xs

29−reverseAppend [] ys = sym (appendNilRightNeutral (reverse ys))

30−reverseAppend (x :: xs) ys =

31− rewrite reverseCons x (xs ++ ys) in

32− rewrite reverseAppend xs ys in

33− rewrite reverseCons x xs in

34− sym $ appendAssociative (reverse ys) (reverse xs) [x]

35−

36−||| Reversing a singleton list is a no-op.

37−reverseSingletonId : (x : a) -> reverse [x] = [x]

38−reverseSingletonId _ = Refl

39−

40−||| Reversing a reverse gives the original.

41−reverseReverseId : (xs : List a) -> reverse (reverse xs) = xs

42−reverseReverseId [] = Refl

43−reverseReverseId (x :: xs) =

44− rewrite reverseCons x xs in

45− rewrite reverseAppend (reverse xs) [x] in

46− cong $ reverseReverseId xs

libs/contrib/Data/List/Reverse.idrnew file+99

@@ -0,0 +1,99 @@

1+||| Properties of the reverse function.

2+module Data.List.Reverse

3+

4+%default total

5+%access export

6+

7+||| The final segment of the accumulator is the final segment of the result.

8+reverseOntoAcc : (xs, ys, zs : List a) ->

9+ reverseOnto (ys ++ zs) xs = (reverseOnto ys xs) ++ zs

10+reverseOntoAcc [] _ _ = Refl

11+reverseOntoAcc (x :: xs) (ys) (zs) = reverseOntoAcc xs (x :: ys) zs

12+

13+||| Serves as a specification for reverseOnto.

14+reverseOntoSpec : (xs, ys : List a) -> reverseOnto xs ys = reverse ys ++ xs

15+reverseOntoSpec xs ys = reverseOntoAcc ys [] xs

16+

17+||| The reverse of an empty list is an empty list. Together with reverseCons,

18+||| serves as a specification for reverse.

19+reverseNil : reverse [] = []

20+reverseNil = Refl

21+

22+||| The reverse of a cons is the reverse of the tail followed by the head.

23+||| Together with reverseNil serves as a specification for reverse.

24+reverseCons : (x : a) -> (xs : List a) -> reverse (x::xs) = reverse xs ++ [x]

25+reverseCons x xs = reverseOntoSpec [x] xs

26+

27+||| Reversing an append is appending reversals backwards.

28+reverseAppend : (xs, ys : List a) ->

29+ reverse (xs ++ ys) = reverse ys ++ reverse xs

30+reverseAppend [] ys = sym (appendNilRightNeutral (reverse ys))

31+reverseAppend (x :: xs) ys =

32+ rewrite reverseCons x (xs ++ ys) in

33+ rewrite reverseAppend xs ys in

34+ rewrite reverseCons x xs in

35+ sym $ appendAssociative (reverse ys) (reverse xs) [x]

36+

37+||| A recursive definition of reverse.

38+reverseRec : List a -> List a

39+reverseRec [] = []

40+reverseRec (x :: xs) = reverseRec xs ++ [x]

41+

42+||| The iterative and recursive defintions of reverse are the same.

43+reverseEquiv : (xs : List a) -> reverseRec xs = reverse xs

44+reverseEquiv [] = Refl

45+reverseEquiv (x :: xs) =

46+ rewrite reverseEquiv xs in

47+ rewrite reverseAppend [x] xs in

48+ Refl

49+

50+||| Reversing a singleton list is a no-op.

51+reverseSingletonId : (x : a) -> reverse [x] = [x]

52+reverseSingletonId _ = Refl

53+

54+||| Reversing a reverse gives the original.

55+reverseReverseId : (xs : List a) -> reverse (reverse xs) = xs

56+reverseReverseId [] = Refl

57+reverseReverseId (x :: xs) =

58+ rewrite reverseCons x xs in

59+ rewrite reverseAppend (reverse xs) [x] in

60+ cong $ reverseReverseId xs

61+

62+||| Reversing onto preserves list length.

63+reverseOntoLength : (xs, acc : List a) ->

64+ length $ reverseOnto acc xs = length acc + length xs

65+reverseOntoLength [] acc = rewrite plusZeroRightNeutral (length acc) in Refl

66+reverseOntoLength (x :: xs) acc =

67+ rewrite reverseOntoLength xs (x :: acc) in

68+ plusSuccRightSucc (length acc) (length xs)

69+

70+||| Reversing preserves list length.

71+reverseLength : (xs : List a) -> length $ reverse xs = length xs

72+reverseLength xs = reverseOntoLength xs []

73+

74+||| Equal reversed lists are equal.

75+reverseEqual : (xs, ys : List a) -> reverse xs = reverse ys -> xs = ys

76+reverseEqual xs ys prf =

77+ rewrite sym $ reverseReverseId xs in

78+ rewrite prf in

79+ reverseReverseId ys

80+

81+||| Do geese see God?

82+data Palindrome : (xs : List a) -> Type where

83+ Empty : Palindrome []

84+ Single : Palindrome [_]

85+ Multi : Palindrome xs -> Palindrome $ [x] ++ xs ++ [x]

86+

87+||| A Palindrome reversed is itself.

88+palindromeReverse : (xs : List a) -> Palindrome xs -> reverse xs = xs

89+palindromeReverse [] Empty = Refl

90+palindromeReverse [_] Single = Refl

91+palindromeReverse ([x] ++ ys ++ [x]) (Multi pf) =

92+ rewrite reverseAppend ([x] ++ ys) [x] in

93+ rewrite reverseAppend [x] ys in

94+ rewrite palindromeReverse ys pf in

95+ Refl

96+

97+||| Only Palindromes are equal to their own reverse.

98+postulate -- This is a tough one. Any takers?

99+reversePalindrome : (xs : List a) -> reverse xs = xs -> Palindrome xs

libs/contrib/Data/Nat/Fact.idrnew file+56

@@ -0,0 +1,56 @@

1+||| Properties of factorial functions.

2+module Data.Nat.Fact

3+

4+%access public export

5+

6+%default total

7+

8+||| Recursive definition of factorial.

9+factRec : Nat -> Nat

10+factRec Z = 1

11+factRec (S k) = (S k) * factRec k

12+

13+||| Tail-recursive accumulator for factItr.

14+factAcc : Nat -> Nat -> Nat

15+factAcc Z acc = acc

16+factAcc (S k) acc = factAcc k $ (S k) * acc

17+

18+||| Iterative definition of factorial.

19+factItr : Nat -> Nat

20+factItr n = factAcc n 1

21+

22+----------------------------------------

23+

24+||| Multiplicand-shuffling lemma.

25+multShuffle : (a, b, c : Nat) -> a * (b * c) = b * (a * c)

26+multShuffle a b c =

27+ rewrite multAssociative a b c in

28+ rewrite multCommutative a b in

29+ sym $ multAssociative b a c

30+

31+||| Multiplication of the accumulator.

32+factAccMult : (a, b, c : Nat) ->

33+ a * factAcc b c = factAcc b (a * c)

34+factAccMult _ Z _ = Refl

35+factAccMult a (S k) c =

36+ rewrite factAccMult a k (S k * c) in

37+ rewrite multShuffle a (S k) c in

38+ Refl

39+

40+||| Addition of accumulators.

41+factAccPlus : (a, b, c : Nat) ->

42+ factAcc a b + factAcc a c = factAcc a (b + c)

43+factAccPlus Z _ _ = Refl

44+factAccPlus (S k) b c =

45+ rewrite factAccPlus k (S k * b) (S k * c) in

46+ rewrite sym $ multDistributesOverPlusRight (S k) b c in

47+ Refl

48+

49+||| The recursive and iterative definitions are the equivalent.

50+factRecItr : (n : Nat) -> factRec n = factItr n

51+factRecItr Z = Refl

52+factRecItr (S k) =

53+ rewrite factRecItr k in

54+ rewrite factAccMult k k 1 in

55+ rewrite multOneRightNeutral k in

56+ factAccPlus k 1 k

libs/contrib/Data/Nat/Parity.idr+155−29

@@ -2,18 +2,9 @@ module Data.Nat.Parity

22

33%access public export

44

5−--------------------------------------------------------------------------------

6−-- Parity

7−--------------------------------------------------------------------------------

5+----------------------------------------

86

9−mutual

10− even : Nat -> Bool

11− even Z = True

12− even (S k) = odd k

13−

14− odd : Nat -> Bool

15− odd Z = False

16− odd (S k) = even k

7+-- Type-level, constructive definitions of parity.

178

189||| A nat is Even when it is twice some other nat.

1910Even : Nat -> Type

@@ -23,6 +14,8 @@ Even n = (half : Nat ** n = half * 2)

2314Odd : Nat -> Type

2415Odd n = (haf : Nat ** n = S $ haf * 2)

2516

17+----------------------------------------

18+

2619||| Two more than an Even is Even.

2720add2Even : Even n -> Even (2 + n)

2821add2Even (half ** pf) = (S half ** cong {f = (+) 2} pf)

@@ -52,20 +45,73 @@ succDoublePredPred {k = S _} prf = cong {f = Nat.pred} prf

5245predEvenOdd : Even (S n) -> Odd n

5346predEvenOdd (half ** pf) = (pred half ** succDoublePredPred pf)

5447

48+----------------------------------------

49+

50+-- Boolean definitions of parity.

51+

52+mutual

53+ even : Nat -> Bool

54+ even Z = True

55+ even (S k) = odd k

56+

57+ odd : Nat -> Bool

58+ odd Z = False

59+ odd (S k) = even k

60+

61+----------------------------------------

62+

63+-- The boolean and type-level definitions are equivalent in the sense

64+-- that a proof of one can be gotten from a proof of the other.

65+

66+mutual

67+ ||| Evens are even.

68+ evenEven : Even n -> even n = True

69+ evenEven {n = Z} _ = Refl

70+ evenEven {n = S _} pf = oddOdd $ predEvenOdd pf

71+

72+ ||| Odds are odd.

73+ oddOdd : Odd n -> odd n = True

74+ oddOdd {n = Z} (_ ** pf) = absurd pf

75+ oddOdd {n = S _} pf = evenEven $ predOddEven pf

76+

77+mutual

78+ ||| If it's even, it's Even.

79+ evenEvenConverse : even n = True -> Even n

80+ evenEvenConverse {n = Z} prf = (0 ** Refl)

81+ evenEvenConverse {n = S k} prf =

82+ let (haf ** pf) = oddOddConverse prf in

83+ (S haf ** cong pf)

84+

85+ ||| If it's odd, it's Odd

86+ oddOddConverse : odd n = True -> Odd n

87+ oddOddConverse {n = Z} prf = absurd prf

88+ oddOddConverse {n = S k} prf =

89+ let (half ** pf) = evenEvenConverse prf in

90+ (half ** cong pf)

91+

92+----------------------------------------

93+

94+||| Every nat is either even or odd.

95+evenorodd : (n : Nat) -> Either (even n = True) (odd n = True)

96+evenorodd Z = Left Refl

97+evenorodd (S k) = case evenorodd k of

98+ Left l => Right l

99+ Right r => Left r

100+

55101||| Every nat is either Even or Odd.

56102evenOrOdd : (n : Nat) -> Either (Even n) (Odd n)

57−evenOrOdd Z = Left (0 ** Refl)

58−evenOrOdd (S k) = case evenOrOdd k of

59− Left (half ** pf) => Right (half ** cong {f = S} pf)

60− Right (haf ** pf) => Left (S haf ** cong {f = S} pf)

103+evenOrOdd n = case evenorodd n of

104+ Left e => Left $ evenEvenConverse e

105+ Right o => Right $ oddOddConverse o

106+

107+||| No nat is both even and odd.

108+notevenandodd : even n = True -> odd n = True -> Void

109+notevenandodd {n = Z} en on = absurd on

110+notevenandodd {n = S _} en on = notevenandodd on en

61111

62112||| No nat is both Even and Odd.

63113notEvenAndOdd : Even n -> Odd n -> Void

64−notEvenAndOdd {n = Z} _ (_ ** odd) = absurd odd

65−notEvenAndOdd {n = (S k)} (half ** even) (haf ** odd) =

66− notEvenAndOdd {n = k}

67− (haf ** cong {f = Nat.pred} odd)

68− (pred half ** succDoublePredPred even)

114+notEvenAndOdd en on = notevenandodd (evenEven en) (oddOdd on)

69115

70116||| Evenness is decidable.

71117evenDec : (n : Nat) -> Dec $ Even n

@@ -79,13 +125,93 @@ oddDec n = case evenOrOdd n of

79125 Left even => No $ notEvenAndOdd even

80126 Right odd => Yes odd

81127

82−mutual

83− ||| Evens are even.

84− evenEven : Even n -> even n = True

85− evenEven {n = Z} _ = Refl

86− evenEven {n = S _} pf = oddOdd $ predEvenOdd pf

128+----------------------------------------

129+

130+||| An Odd is the successor of an Even.

131+oddSuccEven : Odd n -> (m : Nat ** (n = S m, Even m))

132+oddSuccEven (haf ** pf) = (haf * 2 ** (pf, (haf ** Refl)))

133+

134+||| Even plus Even is Even.

135+evenPlusEven : Even j -> Even k -> Even (j + k)

136+evenPlusEven (half_j ** pf_j) (half_k ** pf_k) =

137+ (half_j + half_k **

138+ rewrite pf_j in

139+ rewrite pf_k in

140+ sym $ multDistributesOverPlusLeft half_j half_k 2)

141+

142+||| Odd plus Even is Odd.

143+oddPlusEven : Odd j -> Even k -> Odd (j + k)

144+oddPlusEven oj ek =

145+ let

146+ (i ** (ipj, ei)) = oddSuccEven oj

147+ (half_ik ** eik) = evenPlusEven ei ek

148+ in

149+ (half_ik **

150+ rewrite ipj in

151+ cong {f = S} eik)

152+

153+||| Even plus Odd is Odd.

154+evenPlusOdd : Even j -> Odd k -> Odd (j + k)

155+evenPlusOdd {j} {k} ej ok = rewrite plusCommutative j k in oddPlusEven ok ej

156+

157+||| Odd plus Odd is Even.

158+oddPlusOdd : Odd j -> Odd k -> Even (j + k)

159+oddPlusOdd oj ok =

160+ let

161+ (i ** (ipj, ei)) = oddSuccEven oj

162+ (haf_ik ** oik) = evenPlusOdd ei ok

163+ in

164+ (S haf_ik **

165+ rewrite ipj in

166+ rewrite oik in

167+ Refl)

87168

88− ||| Odds are odd.

89− oddOdd : Odd n -> odd n = True

90− oddOdd {n = Z} (_ ** pf) = absurd pf

91− oddOdd {n = S _} pf = evenEven $ predOddEven pf

169+||| A helper fact.

170+multShuffle : (a, b, c : Nat) ->

171+ (a * c) * (b * c) = ((a * b) * c) * c

172+multShuffle a b c =

173+ rewrite multAssociative (a * c) b c in

174+ rewrite multCommutative (a * c) b in

175+ rewrite multAssociative b a c in

176+ rewrite multCommutative b a in

177+ Refl

178+

179+||| Even times Even is Even.

180+evenMultEven : Even j -> Even k -> Even (j * k)

181+evenMultEven (half_j ** pf_j) (half_k ** pf_k) =

182+ (half_j * half_k * 2 **

183+ rewrite pf_j in

184+ rewrite pf_k in

185+ multShuffle half_j half_k 2)

186+

187+||| Odd times Even is Even.

188+oddMultEven : Odd j -> Even k -> Even (j * k)

189+oddMultEven oj (half_k ** pf_k) =

190+ let

191+ (i ** (ipj, ei)) = oddSuccEven oj

192+ (half_ik ** oik) = evenMultEven ei (half_k ** pf_k)

193+ in

194+ (half_k + half_ik **

195+ rewrite multDistributesOverPlusLeft half_k half_ik 2 in

196+ rewrite ipj in

197+ rewrite oik in

198+ rewrite pf_k in

199+ Refl)

200+

201+||| Even times Odd is Even.

202+evenMultOdd : Even j -> Odd k -> Even (j * k)

203+evenMultOdd {j} {k} ej ok = rewrite multCommutative j k in oddMultEven ok ej

204+

205+||| Odd times Odd is Odd.

206+oddMultOdd : Odd j -> Odd k -> Odd (j * k)

207+oddMultOdd oj (haf_k ** pf_k) =

208+ let

209+ (i ** (ipj, ei)) = oddSuccEven oj

210+ (half_ik ** eik) = evenMultOdd ei (haf_k ** pf_k)

211+ in

212+ (haf_k + half_ik **

213+ rewrite multDistributesOverPlusLeft haf_k half_ik 2 in

214+ rewrite ipj in

215+ rewrite eik in

216+ rewrite pf_k in

217+ Refl)

libs/contrib/Language/JSON.idr+1−1

@@ -1,4 +1,4 @@

1−||| The JSON language, as described at http://json.org/

1+||| The JSON language, as described at https://json.org/

22module Language.JSON

33

44import Language.JSON.Lexer

libs/contrib/contrib.ipkg+1−1

@@ -43,7 +43,7 @@ modules = CFFI

4343 , Data.Heap

4444 , Data.IOArray

4545 , Data.List.Zipper

46− , Data.List.Extra

46+ , Data.List.Reverse

4747

4848 , Data.Matrix

4949 , Data.Matrix.Algebraic

libs/prelude/IO.idr+1−1

@@ -80,7 +80,7 @@ foreign_prim f fname (FFun arg sc) env

8080||| Idris compiler backend in use. For the default C backend, see the

8181||| documentation for `FFI_C`.

8282|||

83−||| For more details, please consult [the Idris documentation](http://docs.idris-lang.org/en/latest/reference/ffi.html).

83+||| For more details, please consult [the Idris documentation](https://idris.readthedocs.io/en/latest/reference/ffi.html).

8484|||

8585||| @ f an FFI descriptor, which is specific to the compiler backend.

8686||| @ fname the name of the foreign function

libs/prelude/Prelude/File.idr+3−2

@@ -150,7 +150,8 @@ do_getFileAccessTime h =

150150private

151151do_getFileModifiedTime : Ptr -> IO Integer

152152do_getFileModifiedTime h =

153− do MkRaw i <- foreign FFI_C "fileModifiedTime" (Ptr -> IO (Raw Integer)) h

153+ do vm <- getMyVM

154+ MkRaw i <- foreign FFI_C "fileModifiedTime" (Ptr -> Ptr -> IO (Raw Integer)) vm h

154155 pure i

155156

156157private

@@ -175,7 +176,7 @@ export

175176fileModifiedTime : File -> IO (Either FileError Integer)

176177fileModifiedTime (FHandle h)

177178 = do s <- do_getFileModifiedTime h

178− if (s < 0)

179+ if (s == -1)

179180 then Left <$> getFileError

180181 else pure (Right s)

181182

libs/prelude/Prelude/Nat.idr+32−61

@@ -512,19 +512,18 @@ plusLeftCancel (S left) right right' p =

512512

513513total plusRightCancel : (left : Nat) -> (left' : Nat) -> (right : Nat) ->

514514 (p : left + right = left' + right) -> left = left'

515−plusRightCancel left left' Z p = rewrite sym (plusZeroRightNeutral left) in

516− rewrite sym (plusZeroRightNeutral left') in

517− p

518−plusRightCancel left left' (S right) p =

519− plusRightCancel left left' right

520− (succInjective _ _ (rewrite plusSuccRightSucc left right in

521− rewrite plusSuccRightSucc left' right in p))

515+plusRightCancel left left' right p =

516+ plusLeftCancel right left left' $

517+ rewrite plusCommutative right left in

518+ rewrite plusCommutative right left' in

519+ p

522520

523521total plusLeftLeftRightZero : (left : Nat) -> (right : Nat) ->

524522 (p : left + right = left) -> right = Z

525−plusLeftLeftRightZero Z right p = p

526−plusLeftLeftRightZero (S left) right p =

527− plusLeftLeftRightZero left right (succInjective _ _ p)

523+plusLeftLeftRightZero left right p =

524+ plusLeftCancel left right Z $

525+ rewrite plusZeroRightNeutral left in

526+ p

528527

529528-- Mult

530529total multZeroLeftZero : (right : Nat) -> Z * right = Z

@@ -558,27 +557,21 @@ multCommutative (S left) right =

558557 rewrite multRightSuccPlus right left in

559558 Refl

560559

561−total multDistributesOverPlusRight : (left : Nat) -> (centre : Nat) -> (right : Nat) ->

562− left * (centre + right) = (left * centre) + (left * right)

563−multDistributesOverPlusRight Z centre right = Refl

564−multDistributesOverPlusRight (S left) centre right =

565− let inductiveHypothesis = multDistributesOverPlusRight left centre right in

566− rewrite inductiveHypothesis in

567− rewrite plusAssociative (plus centre (mult left centre)) right (mult left right) in

568− rewrite sym (plusAssociative centre (mult left centre) right) in

569− rewrite plusCommutative (mult left centre) right in

570− rewrite plusAssociative centre right (mult left centre) in

571− rewrite plusAssociative (plus centre right) (mult left centre) (mult left right) in

572− Refl

573−

574560total multDistributesOverPlusLeft : (left : Nat) -> (centre : Nat) -> (right : Nat) ->

575561 (left + centre) * right = (left * right) + (centre * right)

576−multDistributesOverPlusLeft Z centre right = Refl

577−multDistributesOverPlusLeft (S left) centre right =

578− let inductiveHypothesis = multDistributesOverPlusLeft left centre right in

579− rewrite inductiveHypothesis in

580− rewrite plusAssociative right (mult left right) (mult centre right) in

581− Refl

562+multDistributesOverPlusLeft Z centre right = Refl

563+multDistributesOverPlusLeft (S k) centre right =

564+ rewrite multDistributesOverPlusLeft k centre right in

565+ rewrite plusAssociative right (k * right) (centre * right) in

566+ Refl

567+

568+total multDistributesOverPlusRight : (left : Nat) -> (centre : Nat) -> (right : Nat) ->

569+ left * (centre + right) = (left * centre) + (left * right)

570+multDistributesOverPlusRight left centre right =

571+ rewrite multCommutative left (centre + right) in

572+ rewrite multCommutative left centre in

573+ rewrite multCommutative left right in

574+ multDistributesOverPlusLeft centre right left

582575

583576total multAssociative : (left : Nat) -> (centre : Nat) -> (right : Nat) ->

584577 left * (centre * right) = (left * centre) * right

@@ -590,18 +583,10 @@ multAssociative (S left) centre right =

590583 Refl

591584

592585total multOneLeftNeutral : (right : Nat) -> 1 * right = right

593−multOneLeftNeutral Z = Refl

594−multOneLeftNeutral (S right) =

595− let inductiveHypothesis = multOneLeftNeutral right in

596− rewrite inductiveHypothesis in

597− Refl

586+multOneLeftNeutral right = plusZeroRightNeutral right

598587

599588total multOneRightNeutral : (left : Nat) -> left * 1 = left

600−multOneRightNeutral Z = Refl

601−multOneRightNeutral (S left) =

602− let inductiveHypothesis = multOneRightNeutral left in

603− rewrite inductiveHypothesis in

604− Refl

589+multOneRightNeutral left = rewrite multCommutative left 1 in multOneLeftNeutral left

605590

606591-- Minus

607592total minusSuccSucc : (left : Nat) -> (right : Nat) ->

@@ -689,10 +674,7 @@ total powerZeroOne : (base : Nat) -> power base 0 = S Z

689674powerZeroOne base = Refl

690675

691676total powerOneNeutral : (base : Nat) -> power base 1 = base

692−powerOneNeutral Z = Refl

693−powerOneNeutral (S base) =

694− let inductiveHypothesis = powerOneNeutral base in

695− rewrite inductiveHypothesis in Refl

677+powerOneNeutral base = rewrite multCommutative base 1 in multOneLeftNeutral base

696678

697679total powerOneSuccOne : (exp : Nat) -> power 1 exp = S Z

698680powerOneSuccOne Z = Refl

@@ -701,8 +683,7 @@ powerOneSuccOne (S exp) =

701683 rewrite inductiveHypothesis in Refl

702684

703685total powerSuccSuccMult : (base : Nat) -> power base 2 = mult base base

704−powerSuccSuccMult Z = Refl

705−powerSuccSuccMult (S base) = rewrite multOneRightNeutral base in Refl

686+powerSuccSuccMult base = rewrite multOneRightNeutral base in Refl

706687

707688total powerPowerMultPower : (base : Nat) -> (exp : Nat) -> (exp' : Nat) ->

708689 power (power base exp) exp' = power base (exp * exp')

@@ -796,34 +777,24 @@ minimumIdempotent Z = Refl

796777minimumIdempotent (S k) = cong (minimumIdempotent k)

797778

798779total minimumZeroZeroRight : (right : Nat) -> minimum 0 right = Z

799−minimumZeroZeroRight Z = Refl

800−minimumZeroZeroRight (S right) = minimumZeroZeroRight right

780+minimumZeroZeroRight right = Refl

801781

802782total minimumZeroZeroLeft : (left : Nat) -> minimum left 0 = Z

803−minimumZeroZeroLeft Z = Refl

804−minimumZeroZeroLeft (S left) = Refl

783+minimumZeroZeroLeft left = rewrite minimumCommutative left 0 in Refl

805784

806785total minimumSuccSucc : (left : Nat) -> (right : Nat) ->

807786 minimum (S left) (S right) = S (minimum left right)

808−minimumSuccSucc Z Z = Refl

809−minimumSuccSucc (S left) Z = Refl

810−minimumSuccSucc Z (S right) = Refl

811−minimumSuccSucc (S left) (S right) = Refl

787+minimumSuccSucc left right = Refl

812788

813789total maximumZeroNRight : (right : Nat) -> maximum Z right = right

814−maximumZeroNRight Z = Refl

815−maximumZeroNRight (S right) = Refl

790+maximumZeroNRight right = Refl

816791

817792total maximumZeroNLeft : (left : Nat) -> maximum left Z = left

818−maximumZeroNLeft Z = Refl

819−maximumZeroNLeft (S left) = Refl

793+maximumZeroNLeft left = rewrite maximumCommutative left Z in Refl

820794

821795total maximumSuccSucc : (left : Nat) -> (right : Nat) ->

822796 S (maximum left right) = maximum (S left) (S right)

823−maximumSuccSucc Z Z = Refl

824−maximumSuccSucc (S left) Z = Refl

825−maximumSuccSucc Z (S right) = Refl

826−maximumSuccSucc (S left) (S right) = Refl

797+maximumSuccSucc left right = Refl

827798

828799total sucMaxL : (l : Nat) -> maximum (S l) l = (S l)

829800sucMaxL Z = Refl

man/idris.1+1−1

@@ -113,7 +113,7 @@ should not necessarily be seen as production ready nor for industrial use.

113113

114114.SH SEE ALSO

115115

116−+ The IDRIS web site (http://idris-lang.org/

116++ The IDRIS web site (https://idris-lang.org/

117117

118118+ The IRC channel #idris, on chat.freenode.net

119119

rts/idris_bitstring.c−2

@@ -1,5 +1,3 @@

1−#include <assert.h>

2−

31#include "idris_rts.h"

42

53VAL idris_b8const(VM *vm, uint8_t a) {

rts/idris_rts.c−10

@@ -1158,16 +1158,6 @@ void idris_disableBuffering(void) {

11581158 setvbuf(stdout, NULL, _IONBF, 0);

11591159}

11601160

1161−#ifndef SEL4

1162−int idris_usleep(int usec) {

1163− struct timespec t;

1164− t.tv_sec = usec / 1000000;

1165− t.tv_nsec = (usec % 1000000) * 1000;

1166−

1167− return nanosleep(&t, NULL);

1168−}

1169−#endif // SEL4

1170−

11711161void stackOverflow(void) {

11721162 fprintf(stderr, "Stack overflow");

11731163 exit(-1);

rts/idris_rts.h−4

@@ -507,10 +507,6 @@ const char *idris_getArg(int i);

507507// disable stdin/stdout buffering

508508void idris_disableBuffering(void);

509509

510−#ifndef SEL4

511−int idris_usleep(int usec);

512−#endif // SEL4

513−

514510// Handle stack overflow.

515511// Just reports an error and exits.

516512

rts/idris_stdfgn.c+12−2

@@ -74,13 +74,13 @@ VAL fileAccessTime(void* h) {

7474 }

7575}

7676

77−VAL fileModifiedTime(void* h) {

77+VAL fileModifiedTime(VM* vm, void* h) {

7878 FILE* f = (FILE*)h;

7979 int fd = fileno(f);

8080

8181 struct stat buf;

8282 if (fstat(fd, &buf) == 0) {

83− return MKBIGI(buf.st_mtime);

83+ return MKBIGUI(vm, buf.st_mtime);

8484 } else {

8585 return MKBIGI(-1);

8686 }

@@ -228,6 +228,16 @@ VAL idris_clock(VM* vm) {

228228 return result;

229229}

230230

231+#ifndef SEL4

232+int idris_usleep(int usec) {

233+ struct timespec t;

234+ t.tv_sec = usec / 1000000;

235+ t.tv_nsec = (usec % 1000000) * 1000;

236+

237+ return nanosleep(&t, NULL);

238+}

239+#endif // SEL4

240+

231241VAL idris_mkFileError(VM* vm) {

232242 VAL result;

233243 switch(errno) {

rts/idris_stdfgn.h+4−1

@@ -18,7 +18,7 @@ int fileSize(void* h);

1818

1919// Return a negative number if not a file (e.g. directory or device)

2020VAL fileAccessTime(void* h);

21−VAL fileModifiedTime(void* h);

21+VAL fileModifiedTime(VM* vm, void* h);

2222VAL fileStatusTime(void* h);

2323

2424void* idris_dirOpen(char* dname);

@@ -54,6 +54,9 @@ char* getEnvPair(int i);

5454

5555VAL idris_time();

5656VAL idris_clock(VM* vm);

57+#ifndef SEL4

58+int idris_usleep(int usec);

59+#endif // SEL4

5760

5861void idris_forceGC();

5962

rts/idris_utf8.c−1

@@ -1,5 +1,4 @@

11#include "idris_utf8.h"

2−#include <stdio.h>

32#include <string.h>

43#include <stdlib.h>

54

src/IRTS/Portable.hs+1

@@ -265,6 +265,7 @@ instance ToJSON BC where

265265 toJSON (FOREIGNCALL r fd ret exps) = object ["FOREIGNCALL" .= (r, fd, ret, exps)]

266266 toJSON (SLIDE i) = object ["SLIDE" .= i]

267267 toJSON (RESERVE i) = object ["RESERVE" .= i]

268+ toJSON (RESERVENOALLOC i) = object ["RESERVENOALLOC" .= i]

268269 toJSON (ADDTOP i) = object ["ADDTOP" .= i]

269270 toJSON (TOPBASE i) = object ["TOPBASE" .= i]

270271 toJSON (BASETOP i) = object ["BASETOP" .= i]

src/Idris/CmdOptions.hs+4−3

@@ -18,6 +18,7 @@ import Idris.Info (getIdrisVersion)

1818import Idris.Options

1919import IRTS.CodegenCommon

2020

21+import qualified Control.Monad.Fail as Fail

2122import Control.Monad.Trans (lift)

2223import Control.Monad.Trans.Except (throwE)

2324import Control.Monad.Trans.Reader (ask)

@@ -71,7 +72,7 @@ runArgParser = do opts <- execParser $ info parser

7172 PP.empty,

7273 PP.text "More details over Idris can be found online here:",

7374 PP.empty,

74− PP.indent 4 (PP.text "http://www.idris-lang.org/")]

75+ PP.indent 4 (PP.text "https://www.idris-lang.org/")]

7576

7677execArgParserPure :: [String] -> ParserResult [Opt]

7778execArgParserPure args = preProcOpts <$> execParserPure (prefs idm) (info parser idm) args

@@ -264,7 +265,7 @@ parseCodegen :: String -> Codegen

264265parseCodegen "bytecode" = Bytecode

265266parseCodegen cg = Via IBCFormat (map toLower cg)

266267

267−parseLogCats :: Monad m => String -> m [LogCat]

268+parseLogCats :: Fail.MonadFail m => String -> m [LogCat]

268269parseLogCats s =

269270 case lastMay (readP_to_S doParse s) of

270271 Just (xs, _) -> return xs

@@ -290,7 +291,7 @@ parseLogCats s =

290291 s <- look

291292 fail $ "Category: " ++ s ++ " is not recognised."

292293

293−parseConsoleWidth :: Monad m => String -> m ConsoleWidth

294+parseConsoleWidth :: Fail.MonadFail m => String -> m ConsoleWidth

294295parseConsoleWidth "auto" = return AutomaticWidth

295296parseConsoleWidth "infinite" = return InfinitelyWide

296297parseConsoleWidth s =

src/Idris/Core/CaseTree.hs+1−1

@@ -627,7 +627,7 @@ groupCons cs = gc [] cs

627627 PConst cval -> return $ addConG cval (ps, res) acc

628628 PSuc n -> return $ addg False CSuc [n] (ps, res) acc

629629 PReflected fn args -> return $ addg False (CFn fn) args (ps, res) acc

630− pat -> fail $ show pat ++ " is not a constructor or constant (can't happen)"

630+ pat -> error $ show pat ++ " is not a constructor or constant (can't happen)"

631631

632632 addg uniq c conargs res []

633633 = [ConGroup uniq c [(conargs, res)]]

src/Idris/Core/TT.hs+6

@@ -70,6 +70,7 @@ import qualified Prelude as S (Semigroup(..))

7070import Control.Applicative (Alternative, Applicative(..))

7171import qualified Control.Applicative as A (Alternative(..))

7272import Control.DeepSeq (($!!))

73+import qualified Control.Monad.Fail as Fail

7374import Control.Monad.State.Strict

7475import Data.Binary hiding (get, put)

7576import Data.Char

@@ -324,6 +325,11 @@ bindTC x k = case x of

324325instance Monad TC where

325326 return x = OK x

326327 x >>= k = bindTC x k

328+#if !(MIN_VERSION_base(4,13,0))

329+ fail = Fail.fail

330+#endif

331+

332+instance Fail.MonadFail TC where

327333 fail e = Error (InternalMsg e)

328334

329335instance MonadPlus TC where

src/Idris/ModeCommon.hs+1−1

@@ -167,7 +167,7 @@ loadInputs inputs toline -- furthest line to read in input source files

167167banner = " ____ __ _ \n" ++

168168 " / _/___/ /____(_)____ \n" ++

169169 " / // __ / ___/ / ___/ Version " ++ getIdrisVersion ++ "\n" ++

170− " _/ // /_/ / / / (__ ) http://www.idris-lang.org/ \n" ++

170+ " _/ // /_/ / / / (__ ) https://www.idris-lang.org/ \n" ++

171171 " /___/\\__,_/_/ /_/____/ Type :? for help \n" ++

172172 "\n" ++

173173 "Idris is free software with ABSOLUTELY NO WARRANTY. \n" ++

src/Idris/Parser/Stack.hs+16−2

@@ -5,7 +5,7 @@ Description : Idris parser stack and its primitives.

55License : BSD3

66Maintainer : The Idris Community.

77-}

8−{-# LANGUAGE ConstraintKinds, FlexibleContexts, MultiParamTypeClasses #-}

8+{-# LANGUAGE CPP, ConstraintKinds, FlexibleContexts, MultiParamTypeClasses #-}

99module Idris.Parser.Stack

1010 ( -- * Parsing

1111 Parser(..)

@@ -36,6 +36,7 @@ import Idris.Core.TT (FC(..))

3636import Idris.Output (Message(..))

3737

3838import Control.Arrow (app)

39+import qualified Control.Monad.Fail as Fail

3940import Control.Monad.State.Strict (StateT(..), evalStateT)

4041import Control.Monad.Writer.Strict (MonadWriter(..), WriterT(..), listen,

4142 runWriterT, tell)

@@ -51,7 +52,7 @@ import qualified Util.Pretty as PP

5152type Parser s = StateT s (WriterT FC (P.Parsec Void String))

5253

5354-- | A constraint for parsing without state

54−type Parsing m = (P.MonadParsec Void String m, MonadWriter FC m)

55+type Parsing m = (Fail.MonadFail m, P.MonadParsec Void String m, MonadWriter FC m)

5556

5657-- | Run the Idris parser stack

5758runparser :: Parser st res -> st -> String -> String -> Either ParseError res

@@ -76,11 +77,20 @@ parseErrorOffset = P.errorOffset . parseError

7677instance Message ParseError where

7778 messageExtent err = sourcePositionFC pos

7879 where

80+#if MIN_VERSION_megaparsec(8,0,0)

81+ P.PosState {P.pstateSourcePos = pos} =

82+ P.reachOffsetNoLine (parseErrorOffset err) (parseErrorPosState err)

83+#else

7984 (pos, _) = P.reachOffsetNoLine (parseErrorOffset err) (parseErrorPosState err)

85+#endif

8086 messageText = PP.text . init . P.parseErrorTextPretty . parseError

8187 messageSource err = Just sline

8288 where

89+#if MIN_VERSION_megaparsec(8,0,0)

90+ (sline, _) = P.reachOffset (parseErrorOffset err) (parseErrorPosState err)

91+#else

8392 (_, sline, _) = P.reachOffset (parseErrorOffset err) (parseErrorPosState err)

93+#endif

8494

8595-- | A fully formatted parse error, with caret and bar, etc.

8696prettyError :: ParseError -> String

@@ -88,7 +98,11 @@ prettyError = P.errorBundlePretty . unParseError

8898

8999{- * Mark and restore -}

90100

101+#if MIN_VERSION_megaparsec(8,0,0)

102+type Mark = P.State String Void

103+#else

91104type Mark = P.State String

105+#endif

92106

93107-- | Retrieve the parser state so we can restart from this point later.

94108mark :: Parsing m => m Mark

src/Idris/Reflection.hs+1−1

@@ -1105,7 +1105,7 @@ unApplyRaw tm = ua [] tm

11051105 ua args t = (t, args)

11061106

11071107-- | Build the reflected function definition(s) that correspond(s) to

1108−-- a provided unqualifed name

1108+-- a provided unqualified name

11091109buildFunDefns :: IState -> Name -> [RFunDefn Term]

11101110buildFunDefns ist n =

11111111 [ mkFunDefn name clauses

stack-11.22.yamlnew file+21

@@ -0,0 +1,21 @@

1+#recheck extra-deps next on resolver or cabal file change

2+resolver: lts-11.22

3+

4+extra-deps:

5+- cheapskate-0.1.1.2

6+- megaparsec-7.0.5

7+- Cabal-2.4.1.0

8+- network-3.1.1.1

9+- parser-combinators-1.0.0

10+

11+flags:

12+ idris:

13+ FFI: true

14+ GMP: true

15+

16+ghc-options:

17+ idris: -fwarn-unused-imports -fwarn-unused-binds

18+

19+nix:

20+ enable: false

21+ shell-file: stack-shell.nix

stack-12.26.yamlnew file+20

@@ -0,0 +1,20 @@

1+#recheck extra-deps next on resolver or cabal file change

2+resolver: lts-12.26

3+

4+extra-deps:

5+- cheapskate-0.1.1.2

6+- megaparsec-7.0.5

7+- Cabal-2.4.1.0

8+- network-3.1.1.1

9+

10+flags:

11+ idris:

12+ FFI: true

13+ GMP: true

14+

15+ghc-options:

16+ idris: -fwarn-unused-imports -fwarn-unused-binds

17+

18+nix:

19+ enable: false

20+ shell-file: stack-shell.nix

stack-15.3.yamlnew file+17

@@ -0,0 +1,17 @@

1+#recheck extra-deps next on resolver or cabal file change

2+resolver: lts-15.3

3+

4+extra-deps:

5+- cheapskate-0.1.1.2

6+

7+flags:

8+ idris:

9+ FFI: true

10+ GMP: true

11+

12+ghc-options:

13+ idris: -fwarn-unused-imports -fwarn-unused-binds

14+

15+nix:

16+ enable: false

17+ shell-file: stack-shell.nix

stack-15.4.yamlnew file+17

@@ -0,0 +1,17 @@

1+#recheck extra-deps next on resolver or cabal file change

2+resolver: lts-15.4

3+

4+extra-deps:

5+- cheapskate-0.1.1.2

6+

7+flags:

8+ idris:

9+ FFI: true

10+ GMP: true

11+

12+ghc-options:

13+ idris: -fwarn-unused-imports -fwarn-unused-binds

14+

15+nix:

16+ enable: false

17+ shell-file: stack-shell.nix

stack-alt.yamldeleted−25

@@ -1,25 +0,0 @@

1−#recheck extra-deps next on resolver or cabal file change

2−resolver: lts-11.4

3−

4−packages:

5− - location: .

6−

7−extra-deps:

8− - network-2.8.0.0@sha256:aae171e6c6028a7791dbe4de5b9d2da398056359e3cc7927465ffa3cdae1aa0b

9− - Cabal-2.2.0.1@sha256:2a80d8fb655474f0eaeb20434c47f64f84e6302e55973056f00df8ca050b9683

10− - megaparsec-7.0.4

11− - parser-combinators-1.0.0

12− - zip-archive-0.3.3@sha256:47cf2d66cc8e237f7226837758e1b041e24048ef3820d3d10276c500edb921bf

13− - containers-0.5.11.0@sha256:28ad7337057442f75bc689315ab4ec7bdf5e6b2c39668f306672cecd82c02798

14−

15−flags:

16− idris:

17− FFI: true

18− GMP: true

19−

20−ghc-options:

21− idris: -fwarn-unused-imports -fwarn-unused-binds

22−

23−nix:

24− enable: false

25− shell-file: stack-shell.nix

stack.yamlmode 100644 → 120000+1−24

@@ -1,24 +0,0 @@

1−#recheck extra-deps next on resolver or cabal file change

2−resolver: lts-13.21

3−

4−extra-deps:

5− - network-2.8.0.0@sha256:aae171e6c6028a7791dbe4de5b9d2da398056359e3cc7927465ffa3cdae1aa0b

6− - Cabal-2.2.0.1@sha256:2a80d8fb655474f0eaeb20434c47f64f84e6302e55973056f00df8ca050b9683

7− - megaparsec-7.0.4

8− - parser-combinators-1.0.0

9− - zip-archive-0.3.3@sha256:47cf2d66cc8e237f7226837758e1b041e24048ef3820d3d10276c500edb921bf

10− - containers-0.5.11.0@sha256:28ad7337057442f75bc689315ab4ec7bdf5e6b2c39668f306672cecd82c02798

11− - tasty-rerun-1.1.14@sha256:ba9c19a281535bea566e1044bc02c36ef17abcb310af4b6a149ec11780c7ce35

12− - binary-0.8.7.0@sha256:ae3e6cca723ac55c54bbb3fa771bcf18142bc727afd57818e66d6ee6c8044f12

13−

14−flags:

15− idris:

16− FFI: true

17− GMP: true

18−

19−ghc-options:

20− idris: -fwarn-unused-imports -fwarn-unused-binds

21−

22−nix:

23− enable: false

24− shell-file: stack-shell.nix

@@ -0,0 +1 @@

1+stack-15.4.yaml

test/README.md+5−5

@@ -113,18 +113,18 @@ and somewhat self-explanatory.

113113

1141141. Choose the family your test shall belong to and remember its identifier.

1151152. Pick the next available integer in the test family. It will be the index.

116−3. Say the family's identifier is `foo` and the index is `42`. You should call `./mktest.pl foo042` ; this will create the directory and a simple `run` script.

116+3. Say the family's identifier is `foo` and the index is `42`. You should call `./mktest.pl foo042` ; this will create the directory and a simple `run.sh` script.

1171174. Modify the `run` script to your liking. If you want to call the idris executable, write `${IDRIS:-idris} $@`.

1181185. Add any file you may need in the directory. If they don't end in `.idr`, you should remember them for the next step.

1191196. Add your test in `TestData.hs`. Each family has a list of `(Index, CompatCodegen)`. See the next section for the available values in `CompatCodegen`. In most cases, you should write `( 42, ANY)`.

120−7. Generate the `expected` file by doing:

120+7. Generate the `expected.out` file by doing:

121121 ```

122122 # Using cabal

123123 cabal test --test-options="--pattern foo042 --accept"

124124 # Using stack

125125 stack test --test-arguments="--pattern foo042 --accept"

126126 ```

127−8. Check the content of `expected`. Maybe the test didn't do what you thought it would. Fix and go back to 7 until it's ok.

127+8. Check the content of `expected.out`. Maybe the test didn't do what you thought it would. Fix and go back to 7 until it's ok.

128128

129129### Specifying compatible backends

130130

@@ -146,7 +146,7 @@ Currently, `NONE` has the same effect as `ANY`, but this will change.

146146

147147### Updating golden files

148148

149−To update the `expected` file for every test, do one of the following:

149+To update the `expected.out` file for every test, do one of the following:

150150

151151```

152152# Using make

@@ -157,4 +157,4 @@ cabal test --test-options="--accept"

157157stack test --test-arguments="--accept"

158158```

159159

160−"Accepted" tests are the ones that update the golden file. A test can still fail if the `run` script itself crashes.

160+"Accepted" tests are the ones that update the golden file. A test can still fail if the `run.sh` script itself crashes.

test/TestRun.hs+2−2

@@ -62,7 +62,7 @@ ingredients = defaultIngredients ++

6262test :: String -> String -> IO () -> TestTree

6363test testName path = goldenVsFileDiff testName diff ref output

6464 where

65− ref = path </> "expected"

65+ ref = path </> "expected.out"

6666 output = path </> "output"

6767 diff ref new | os == "openbsd" = ["diff", "-u", new, ref]

6868 | otherwise = ["diff", "--strip-trailing-cr", "-u", new, ref]

@@ -92,7 +92,7 @@ mkGoldenTests testFamilies flags =

9292-- this thing.

9393runTest :: String -> Flags -> IO ()

9494runTest path flags = do

95− let run = (proc "bash" ("run" : flags)) {cwd = Just path}

95+ let run = (proc "bash" ("run.sh" : flags)) {cwd = Just path}

9696 (_, output, error_out) <- readCreateProcessWithExitCode run ""

9797 writeFile (path </> "output") (normalise output)

9898 when (error_out /= "") $ hPutStrLn stderr ("\nError: " ++ path ++ "\n" ++ error_out)

test/base001/expected → test/base001/expected.outrenamed

The content is the same.

test/base001/run → test/base001/run.shrenamed+1−1

@@ -3,7 +3,7 @@

33set -u

44

55if [[ ${OSTYPE} = 'msys' ]]; then

6− cat expected # skip this test on Windows

6+ cat expected.out # skip this test on Windows

77else

88 ${IDRIS:-idris} "$@" --build base001.ipkg | grep -v 'make.*:'

99 ./base001 2>&1 | grep -v '^sh:.*\./does-not-exist:'

test/basic001/expected → test/basic001/expected.outrenamed

The content is the same.

test/basic001/run → test/basic001/run.shrenamed

Only the mode changed.

test/basic002/expected → test/basic002/expected.outrenamed

The content is the same.

test/basic002/run → test/basic002/run.shrenamed

Only the mode changed.

test/basic003/expected → test/basic003/expected.outrenamed

The content is the same.

test/basic003/run → test/basic003/run.shrenamed

Only the mode changed.

test/basic004/expected → test/basic004/expected.outrenamed

The content is the same.

test/basic004/run → test/basic004/run.shrenamed

Only the mode changed.

test/basic005/expected → test/basic005/expected.outrenamed

The content is the same.

test/basic005/run → test/basic005/run.shrenamed

Only the mode changed.

test/basic006/expected → test/basic006/expected.outrenamed

The content is the same.

test/basic006/run → test/basic006/run.shrenamed

Only the mode changed.

test/basic007/expected → test/basic007/expected.outrenamed

The content is the same.

test/basic007/run → test/basic007/run.shrenamed

Only the mode changed.

test/basic008/expected → test/basic008/expected.outrenamed

The content is the same.

test/basic008/run → test/basic008/run.shrenamed

Only the mode changed.

test/basic009/expected → test/basic009/expected.outrenamed

The content is the same.

test/basic009/run → test/basic009/run.shrenamed

Only the mode changed.

test/basic010/expected → test/basic010/expected.outrenamed

The content is the same.

test/basic010/run → test/basic010/run.shrenamed

Only the mode changed.

test/basic011/expected → test/basic011/expected.outrenamed

The content is the same.

test/basic011/run → test/basic011/run.shrenamed

Only the mode changed.

test/basic012/expected → test/basic012/expected.outrenamed

The content is the same.

test/basic012/run → test/basic012/run.shrenamed

Only the mode changed.

test/basic013/expected → test/basic013/expected.outrenamed

The content is the same.

test/basic013/run → test/basic013/run.shrenamed

Only the mode changed.

test/basic014/expected → test/basic014/expected.outrenamed

The content is the same.

test/basic014/run → test/basic014/run.shrenamed

Only the mode changed.

test/basic015/expected → test/basic015/expected.outrenamed

The content is the same.

test/basic015/run → test/basic015/run.shrenamed

Only the mode changed.

test/basic016/expected → test/basic016/expected.outrenamed

The content is the same.

test/basic016/run → test/basic016/run.shrenamed

Only the mode changed.

test/basic017/expected → test/basic017/expected.outrenamed

The content is the same.

test/basic017/run → test/basic017/run.shrenamed

Only the mode changed.

test/basic018/expected → test/basic018/expected.outrenamed

The content is the same.

test/basic018/run → test/basic018/run.shrenamed

Only the mode changed.

test/basic019/expected → test/basic019/expected.outrenamed

The content is the same.

test/basic019/run → test/basic019/run.shrenamed

Only the mode changed.

test/basic020/expected → test/basic020/expected.outrenamed

The content is the same.

test/basic020/run → test/basic020/run.shrenamed

Only the mode changed.

test/basic021/expected → test/basic021/expected.outrenamed

The content is the same.

test/basic021/run → test/basic021/run.shrenamed

Only the mode changed.

test/basic022/expected → test/basic022/expected.outrenamed

The content is the same.

test/basic022/run → test/basic022/run.shrenamed

Only the mode changed.

test/basic023/expected → test/basic023/expected.outrenamed

The content is the same.

test/basic023/run → test/basic023/run.shrenamed

Only the mode changed.

test/basic024/expected → test/basic024/expected.outrenamed

The content is the same.

test/basic024/input → test/basic024/input.inrenamed

The content is the same.

test/basic024/run → test/basic024/run.shrenamed+1−1

@@ -1,6 +1,6 @@

11#!/usr/bin/env bash

22

3−${IDRIS:-idris} $@ --quiet --port none < input

3+${IDRIS:-idris} $@ --quiet --port none < input.in

44${IDRIS:-idris} $@ basic024.idr -o basic024

55

66./basic024

test/basic025/expected → test/basic025/expected.outrenamed

The content is the same.

test/basic025/input → test/basic025/input.inrenamed

The content is the same.

test/basic025/run → test/basic025/run.shrenamed+2−2

@@ -1,7 +1,7 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none < input

2+${IDRIS:-idris} $@ --quiet --port none < input.in

33${IDRIS:-idris} $@ -o basic025 basic025.idr

44

5−./basic025 input

5+./basic025 input.in

66

77rm -f basic025 *.ibc

test/basic026/expected → test/basic026/expected.outrenamed

The content is the same.

test/basic026/run → test/basic026/run.shrenamed

The content is the same.

test/bignum001/expected → test/bignum001/expected.outrenamed

The content is the same.

test/bignum001/run → test/bignum001/run.shrenamed

Only the mode changed.

test/bignum002/expected → test/bignum002/expected.outrenamed

The content is the same.

test/bignum002/run → test/bignum002/run.shrenamed

Only the mode changed.

test/bignum003/expected → test/bignum003/expected.outrenamed

The content is the same.

test/bignum003/run → test/bignum003/run.shrenamed

Only the mode changed.

test/bounded001/expected → test/bounded001/expected.outrenamed

The content is the same.

test/bounded001/run → test/bounded001/run.shrenamed

Only the mode changed.

test/buffer001/expected → test/buffer001/expected.outrenamed

The content is the same.

test/buffer001/run → test/buffer001/run.shrenamed

Only the mode changed.

test/buffer002/expected → test/buffer002/expected.outrenamed

The content is the same.

test/buffer002/run → test/buffer002/run.shrenamed

Only the mode changed.

test/contrib001/expected → test/contrib001/expected.outrenamed

The content is the same.

test/contrib001/run → test/contrib001/run.shrenamed

Only the mode changed.

test/corecords001/expected → test/corecords001/expected.outrenamed

The content is the same.

test/corecords001/run → test/corecords001/run.shrenamed

Only the mode changed.

test/corecords002/expected → test/corecords002/expected.outrenamed

The content is the same.

test/corecords002/run → test/corecords002/run.shrenamed

Only the mode changed.

test/delab001/expected → test/delab001/expected.outrenamed

The content is the same.

test/delab001/input → test/delab001/input.inrenamed

The content is the same.

test/delab001/run → test/delab001/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor delab001.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor delab001.idr < input.in

33rm -f *.ibc

test/directives001/expected → test/directives001/expected.outrenamed

The content is the same.

test/directives001/run → test/directives001/run.shrenamed

Only the mode changed.

test/directives002/expected → test/directives002/expected.outrenamed

The content is the same.

test/directives002/run → test/directives002/run.shrenamed

The content is the same.

test/directives003/expected → test/directives003/expected.outrenamed

The content is the same.

test/directives003/run → test/directives003/run.shrenamed

Only the mode changed.

test/disambig002/expected → test/disambig002/expected.outrenamed

The content is the same.

test/disambig002/run → test/disambig002/run.shrenamed

Only the mode changed.

test/docs001/expected → test/docs001/expected.outrenamed

The content is the same.

test/docs001/input → test/docs001/input.inrenamed

The content is the same.

test/docs001/run → test/docs001/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor docs001.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor docs001.idr < input.in

33rm *.ibc

test/docs002/expected → test/docs002/expected.outrenamed

The content is the same.

test/docs002/input → test/docs002/input.inrenamed

The content is the same.

test/docs002/run → test/docs002/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --nobanner --nocolor --quiet --port none docs002.idr < input

2+${IDRIS:-idris} $@ --nobanner --nocolor --quiet --port none docs002.idr < input.in

33rm *.ibc

test/docs003/expected → test/docs003/expected.outrenamed

The content is the same.

test/docs003/input → test/docs003/input.inrenamed

The content is the same.

test/docs003/run → test/docs003/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor docs003.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor docs003.idr < input.in

33rm *.ibc

test/docs004/expected → test/docs004/expected.outrenamed

The content is the same.

test/docs004/input → test/docs004/input.inrenamed

The content is the same.

test/docs004/run → test/docs004/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor docs004.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor docs004.idr < input.in

33rm *.ibc

test/docs005/expected → test/docs005/expected.outrenamed

The content is the same.

test/docs005/input → test/docs005/input.inrenamed

The content is the same.

test/docs005/run → test/docs005/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor docs005.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor docs005.idr < input.in

33rm *.ibc

test/docs006/expected → test/docs006/expected.outrenamed

The content is the same.

test/docs006/input → test/docs006/input.inrenamed

The content is the same.

test/docs006/run → test/docs006/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolor docs006.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolor docs006.idr < input.in

33rm *.ibc

test/dsl001/expected → test/dsl001/expected.outrenamed

The content is the same.

test/dsl001/input → test/dsl001/input.inrenamed

The content is the same.

test/dsl001/run → test/dsl001/run.shrenamed+1−1

@@ -1,5 +1,5 @@

11#!/usr/bin/env bash

22${IDRIS:-idris} $@ test001.idr -o test001 --partial-eval

33./test001

4−${IDRIS:-idris} $@ test001.idr --partial-eval --quiet --port none < input

4+${IDRIS:-idris} $@ test001.idr --partial-eval --quiet --port none < input.in

55rm -f test001 test001.ibc

test/dsl002/expected → test/dsl002/expected.outrenamed

The content is the same.

test/dsl002/run → test/dsl002/run.shrenamed

Only the mode changed.

test/dsl002/test → test/dsl002/test.inrenamed

The content is the same.

test/dsl002/test014.idr+1−1

@@ -64,6 +64,6 @@ readH fn = res (do let x = open fn Reading

6464 else rputStrLn "Error")

6565

6666main : IO ()

67−main = run (readH "test")

67+main = run (readH "test.in")

6868

6969

test/dsl003/expected → test/dsl003/expected.outrenamed

The content is the same.

test/dsl003/run → test/dsl003/run.shrenamed

Only the mode changed.

test/dsl004/expected → test/dsl004/expected.outrenamed

The content is the same.

test/dsl004/run → test/dsl004/run.shrenamed

Only the mode changed.

test/effects001/expected → test/effects001/expected.outrenamed

The content is the same.

test/effects001/run → test/effects001/run.shrenamed

Only the mode changed.

test/effects001/test021.idr+1−1

@@ -31,7 +31,7 @@ readFileCount = readAcc []

3131

3232testFile : TestFileIO () ()

3333testFile = do

34− Success <- open "testFile" Read

34+ Success <- open "testFile.in" Read

3535 | (FError err) => do

3636 putStrLn "Error!"

3737 pure ()

test/effects001/testFile → test/effects001/testFile.inrenamed

The content is the same.

test/effects002/expected → test/effects002/expected.outrenamed

The content is the same.

test/effects002/run → test/effects002/run.shrenamed

Only the mode changed.

test/effects003/expected → test/effects003/expected.outrenamed

The content is the same.

test/effects003/input → test/effects003/input.inrenamed

The content is the same.

test/effects003/run → test/effects003/run.shrenamed+1−1

@@ -1,4 +1,4 @@

11#!/usr/bin/env bash

22${IDRIS:-idris} $@ hangman.idr --nocolour -p effects -o hangman

3−./hangman < input

3+./hangman < input.in

44rm -f hangman *.ibc

test/effects004/expected → test/effects004/expected.outrenamed

The content is the same.

test/effects004/input → test/effects004/input.inrenamed

The content is the same.

test/effects004/run → test/effects004/run.shrenamed+1−1

@@ -1,4 +1,4 @@

11#!/usr/bin/env bash

22${IDRIS:-idris} $@ effects004.idr -o effects004 -p effects

3−./effects004 < input

3+./effects004 < input.in

44rm -f effects004 *.ibc

test/effects005/expected → test/effects005/expected.outrenamed

The content is the same.

test/effects005/run → test/effects005/run.shrenamed

Only the mode changed.

test/error001/expected → test/error001/expected.outrenamed

The content is the same.

test/error001/run → test/error001/run.shrenamed

Only the mode changed.

test/error002/expected → test/error002/expected.outrenamed

The content is the same.

test/error002/run → test/error002/run.shrenamed

Only the mode changed.

test/error003/expected → test/error003/expected.outrenamed

The content is the same.

test/error003/run → test/error003/run.shrenamed

Only the mode changed.

test/error004/expected → test/error004/expected.outrenamed

The content is the same.

test/error004/run → test/error004/run.shrenamed

Only the mode changed.

test/error005/expected → test/error005/expected.outrenamed

The content is the same.

test/error005/run → test/error005/run.shrenamed

Only the mode changed.

test/error006/expected → test/error006/expected.outrenamed

The content is the same.

test/error006/run → test/error006/run.shrenamed

Only the mode changed.

test/error007/expected → test/error007/expected.outrenamed

The content is the same.

test/error007/run → test/error007/run.shrenamed

Only the mode changed.

test/error008/expected → test/error008/expected.outrenamed

The content is the same.

test/error008/run → test/error008/run.shrenamed

Only the mode changed.

test/error009/expected → test/error009/expected.outrenamed

The content is the same.

test/error009/run → test/error009/run.shrenamed

Only the mode changed.

test/ffi001/expected → test/ffi001/expected.outrenamed

The content is the same.

test/ffi001/run → test/ffi001/run.shrenamed

Only the mode changed.

test/ffi002/expected → test/ffi002/expected.outrenamed

The content is the same.

test/ffi002/run → test/ffi002/run.shrenamed

Only the mode changed.

test/ffi003/expected → test/ffi003/expected.outrenamed

The content is the same.

test/ffi003/input → test/ffi003/input.inrenamed

The content is the same.

test/ffi003/run → test/ffi003/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolour test024.idr --exec main < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolour test024.idr --exec main < input.in

33rm -f *.ibc

test/ffi004/expected → test/ffi004/expected.outrenamed

The content is the same.

test/ffi004/run → test/ffi004/run.shrenamed

Only the mode changed.

test/ffi005/expected → test/ffi005/expected.outrenamed

The content is the same.

test/ffi005/run → test/ffi005/run.shrenamed

Only the mode changed.

test/ffi006/expected → test/ffi006/expected.outrenamed

The content is the same.

test/ffi006/run → test/ffi006/run.shrenamed

Only the mode changed.

test/ffi007/expected → test/ffi007/expected.outrenamed

The content is the same.

test/ffi007/run → test/ffi007/run.shrenamed

The content is the same.

test/ffi008/expected → test/ffi008/expected.outrenamed

The content is the same.

test/ffi008/run → test/ffi008/run.shrenamed

The content is the same.

test/ffi009/expected → test/ffi009/expected.outrenamed

The content is the same.

test/ffi009/run → test/ffi009/run.shrenamed

Only the mode changed.

test/ffi010/expected → test/ffi010/expected.outrenamed

The content is the same.

test/ffi010/run → test/ffi010/run.shrenamed

Only the mode changed.

test/ffi011/expected → test/ffi011/expected.outrenamed

The content is the same.

test/ffi011/ffi011 → test/ffi011/ffi011.jsrenamed

The content is the same.

test/ffi011/run → test/ffi011/run.shrenamed+1−1

@@ -1,4 +1,4 @@

11#!/usr/bin/env bash

22${IDRIS:-idris} $@ ffi011.idr --interface -o lib.js

3−node ./ffi011

3+node ./ffi011.js

44rm -f *.ibc lib.js

test/ffi012/expected → test/ffi012/expected.outrenamed

The content is the same.

test/ffi012/ffi012 → test/ffi012/ffi012.jsrenamed

The content is the same.

test/ffi012/run → test/ffi012/run.shrenamed

Only the mode changed.

test/ffi013/expected → test/ffi013/expected.outrenamed

The content is the same.

test/ffi013/run → test/ffi013/run.shrenamed

Only the mode changed.

test/folding001/expected → test/folding001/expected.outrenamed

The content is the same.

test/folding001/run → test/folding001/run.shrenamed

Only the mode changed.

test/idrisdoc001/expected → test/idrisdoc001/expected.outrenamed

The content is the same.

test/idrisdoc001/run → test/idrisdoc001/run.shrenamed

Only the mode changed.

test/idrisdoc002/expected → test/idrisdoc002/expected.outrenamed

The content is the same.

test/idrisdoc002/run → test/idrisdoc002/run.shrenamed

Only the mode changed.

test/idrisdoc003/expected → test/idrisdoc003/expected.outrenamed

The content is the same.

test/idrisdoc003/run → test/idrisdoc003/run.shrenamed

Only the mode changed.

test/idrisdoc004/expected → test/idrisdoc004/expected.outrenamed

The content is the same.

test/idrisdoc004/run → test/idrisdoc004/run.shrenamed

Only the mode changed.

test/idrisdoc005/expected → test/idrisdoc005/expected.outrenamed

The content is the same.

test/idrisdoc005/run → test/idrisdoc005/run.shrenamed

Only the mode changed.

test/idrisdoc006/expected → test/idrisdoc006/expected.outrenamed

The content is the same.

test/idrisdoc006/run → test/idrisdoc006/run.shrenamed

Only the mode changed.

test/idrisdoc007/expected → test/idrisdoc007/expected.outrenamed

The content is the same.

test/idrisdoc007/run → test/idrisdoc007/run.shrenamed

Only the mode changed.

test/idrisdoc008/expected → test/idrisdoc008/expected.outrenamed

The content is the same.

test/idrisdoc008/run → test/idrisdoc008/run.shrenamed

Only the mode changed.

test/idrisdoc009/expected → test/idrisdoc009/expected.outrenamed

The content is the same.

test/idrisdoc009/input → test/idrisdoc009/input.inrenamed

The content is the same.

test/idrisdoc009/run → test/idrisdoc009/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --nocolour --quiet --port none Test.idr < input

2+${IDRIS:-idris} $@ --nocolour --quiet --port none Test.idr < input.in

33rm -f *.ibc

test/interactive001/expected → test/interactive001/expected.outrenamed

The content is the same.

test/interactive001/input → test/interactive001/input.inrenamed

The content is the same.

test/interactive001/run → test/interactive001/run.shrenamed+1−1

@@ -1,5 +1,5 @@

11#!/usr/bin/env bash

22

3−${IDRIS:-idris} $@ --quiet --port none --indent-with 8 interactive001.idr < input

3+${IDRIS:-idris} $@ --quiet --port none --indent-with 8 interactive001.idr < input.in

44

55rm -f *.ibc

test/interactive002/expected → test/interactive002/expected.outrenamed

The content is the same.

test/interactive002/input → test/interactive002/input.inrenamed

The content is the same.

test/interactive002/run → test/interactive002/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive002.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive002.idr < input.in

33rm -f *.ibc

test/interactive003/expected → test/interactive003/expected.outrenamed

The content is the same.

test/interactive003/input → test/interactive003/input.inrenamed

The content is the same.

test/interactive003/run → test/interactive003/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive003.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive003.idr < input.in

33rm -f *.ibc

test/interactive004/expected → test/interactive004/expected.outrenamed

The content is the same.

test/interactive004/input → test/interactive004/input.inrenamed

The content is the same.

test/interactive004/run → test/interactive004/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive004.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive004.idr < input.in

33rm -f *.ibc

test/interactive005/expected → test/interactive005/expected.outrenamed

The content is the same.

test/interactive005/input → test/interactive005/input.inrenamed

The content is the same.

test/interactive005/run → test/interactive005/run.shrenamed+1−1

@@ -1,5 +1,5 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --nocolour --quiet --port none interactive005.idr --consolewidth 70 < input

2+${IDRIS:-idris} $@ --nocolour --quiet --port none interactive005.idr --consolewidth 70 < input.in

33rm -f *.ibc

44rm -f hello.bytecode

55rm -f hello

test/interactive006/expected → test/interactive006/expected.outrenamed

The content is the same.

test/interactive006/input → test/interactive006/input.inrenamed

The content is the same.

test/interactive006/run → test/interactive006/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --port 5000 interactive006.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --port 5000 interactive006.idr < input.in

33rm -f *.ibc

test/interactive007/expected → test/interactive007/expected.outrenamed

The content is the same.

test/interactive007/input → test/interactive007/input.inrenamed

The content is the same.

test/interactive007/run → test/interactive007/run.shrenamed+1−1

@@ -1,2 +1,2 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ -p contrib --nobanner --nocolor --port none < input | perl -pe 's-Data\\Z-Data/Z-g'

2+${IDRIS:-idris} $@ -p contrib --nobanner --nocolor --port none < input.in | perl -pe 's-Data\\Z-Data/Z-g'

test/interactive008/expected → test/interactive008/expected.outrenamed

The content is the same.

test/interactive008/input → test/interactive008/input.inrenamed

The content is the same.

test/interactive008/rundeleted−2

@@ -1,2 +0,0 @@

1−#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --nobanner --nocolor --port none < input

test/interactive008/run.shnew file+2

@@ -0,0 +1,2 @@

1+#!/usr/bin/env bash

2+${IDRIS:-idris} $@ --nobanner --nocolor --port none < input.in

test/interactive009/expected → test/interactive009/expected.outrenamed

The content is the same.

test/interactive009/input → test/interactive009/input.inrenamed

The content is the same.

test/interactive009/run → test/interactive009/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive009.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive009.idr < input.in

33rm -f *.ibc

test/interactive010/expected → test/interactive010/expected.outrenamed

The content is the same.

test/interactive010/input → test/interactive010/input.inrenamed

The content is the same.

test/interactive010/run → test/interactive010/run.shrenamed+1−1

@@ -1,2 +1,2 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nobanner --nocolor < input

2+${IDRIS:-idris} $@ --quiet --port none --nobanner --nocolor < input.in

test/interactive011/expected → test/interactive011/expected.outrenamed

The content is the same.

test/interactive011/input → test/interactive011/input.inrenamed

The content is the same.

test/interactive011/run → test/interactive011/run.shrenamed+1−1

@@ -1,6 +1,6 @@

11#!/usr/bin/env bash

22

33cd src

4−${IDRIS:-idris} "$@" --quiet --port none --indent-clause 4 Main.idr <../input

4+${IDRIS:-idris} "$@" --quiet --port none --indent-clause 4 Main.idr <../input.in

55

66rm -f *.ibc

test/interactive012/expected → test/interactive012/expected.outrenamed

The content is the same.

test/interactive012/input → test/interactive012/input.inrenamed

The content is the same.

test/interactive012/run → test/interactive012/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --nocolour --consolewidth 70 --quiet --port none interactive012.idr < input

2+${IDRIS:-idris} $@ --nocolour --consolewidth 70 --quiet --port none interactive012.idr < input.in

33rm -f *.ibc

test/interactive013/expected → test/interactive013/expected.outrenamed

The content is the same.

test/interactive013/input → test/interactive013/input.inrenamed

The content is the same.

test/interactive013/run → test/interactive013/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive013.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive013.idr < input.in

33rm -f *.ibc

test/interactive014/expected → test/interactive014/expected.outrenamed

The content is the same.

test/interactive014/input → test/interactive014/input.inrenamed

The content is the same.

test/interactive014/run → test/interactive014/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none interactive014.idr < input

2+${IDRIS:-idris} $@ --quiet --port none interactive014.idr < input.in

33rm -f *.ibc

test/interactive015/expected → test/interactive015/expected.outrenamed

The content is the same.

test/interactive015/input → test/interactive015/input.inrenamed

The content is the same.

test/interactive015/run → test/interactive015/run.shrenamed+1−1

@@ -1,7 +1,7 @@

11#!/usr/bin/env bash

22

33cp src/interactive015.idr .

4−${IDRIS:-idris} "$@" --quiet --port none interactive015.idr < input

4+${IDRIS:-idris} "$@" --quiet --port none interactive015.idr < input.in

55

66cat interactive015.idr

77

test/interactive016/expected → test/interactive016/expected.outrenamed

The content is the same.

test/interactive016/input → test/interactive016/input.inrenamed

The content is the same.

test/interactive016/run → test/interactive016/run.shrenamed+1−1

@@ -1,7 +1,7 @@

11#!/usr/bin/env bash

22

33cp src/interactive016.idr .

4−${IDRIS:-idris} "$@" --quiet --port none interactive016.idr < input

4+${IDRIS:-idris} "$@" --quiet --port none interactive016.idr < input.in

55

66cat interactive016.idr

77

test/interactive017/expected → test/interactive017/expected.outrenamed

The content is the same.

test/interactive017/run → test/interactive017/run.shrenamed

Only the mode changed.

test/interactive018/expected → test/interactive018/expected.outrenamed

The content is the same.

test/interactive018/input → test/interactive018/input.inrenamed

The content is the same.

test/interactive018/rundeleted−3

@@ -1,3 +0,0 @@

1−#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none Top.idr < input

3−rm -f *.ibc

test/interactive018/run.shnew file+3

@@ -0,0 +1,3 @@

1+#!/usr/bin/env bash

2+${IDRIS:-idris} $@ --quiet --port none Top.idr < input.in

3+rm -f *.ibc

test/interfaces001/expected → test/interfaces001/expected.outrenamed

The content is the same.

test/interfaces001/input → test/interfaces001/input.inrenamed

The content is the same.

test/interfaces001/run → test/interfaces001/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolour --consolewidth 70 InterfaceName.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolour --consolewidth 70 InterfaceName.idr < input.in

33rm -f *.ibc

test/interfaces002/expected → test/interfaces002/expected.outrenamed

The content is the same.

test/interfaces002/run → test/interfaces002/run.shrenamed

Only the mode changed.

test/interfaces003/expected → test/interfaces003/expected.outrenamed

The content is the same.

test/interfaces003/run → test/interfaces003/run.shrenamed

Only the mode changed.

test/interfaces004/expected → test/interfaces004/expected.outrenamed

The content is the same.

test/interfaces004/run → test/interfaces004/run.shrenamed

Only the mode changed.

test/interfaces005/expected → test/interfaces005/expected.outrenamed

The content is the same.

test/interfaces005/run → test/interfaces005/run.shrenamed

Only the mode changed.

test/interfaces006/expected → test/interfaces006/expected.outrenamed

The content is the same.

test/interfaces006/run → test/interfaces006/run.shrenamed

Only the mode changed.

test/interfaces007/expected → test/interfaces007/expected.outrenamed

The content is the same.

test/interfaces007/run → test/interfaces007/run.shrenamed

Only the mode changed.

test/interfaces008/expected → test/interfaces008/expected.outrenamed

The content is the same.

test/interfaces008/run → test/interfaces008/run.shrenamed

Only the mode changed.

test/interfaces009/expected → test/interfaces009/expected.outrenamed

The content is the same.

test/interfaces009/run → test/interfaces009/run.shrenamed

Only the mode changed.

test/interfaces010/expected → test/interfaces010/expected.outrenamed

The content is the same.

test/interfaces010/run → test/interfaces010/run.shrenamed

Only the mode changed.

test/interpret001/expected → test/interpret001/expected.outrenamed

The content is the same.

test/interpret001/input → test/interpret001/input.inrenamed

The content is the same.

test/interpret001/run → test/interpret001/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolour double-echo.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolour double-echo.idr < input.in

33rm -f *.ibc

test/interpret002/expected → test/interpret002/expected.outrenamed

The content is the same.

test/interpret002/input → test/interpret002/input.inrenamed

The content is the same.

test/interpret002/run → test/interpret002/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolour file-error.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolour file-error.idr < input.in

33rm -f *.ibc

test/interpret003/expected → test/interpret003/expected.outrenamed

The content is the same.

test/interpret003/input → test/interpret003/input.inrenamed

The content is the same.

test/interpret003/run → test/interpret003/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none --nocolour interpret003.idr < input

2+${IDRIS:-idris} $@ --quiet --port none --nocolour interpret003.idr < input.in

33rm -f *.ibc

test/io001/expected → test/io001/expected.outrenamed

The content is the same.

test/io001/run → test/io001/run.shrenamed

Only the mode changed.

test/io002/expected → test/io002/expected.outrenamed

The content is the same.

test/io002/run → test/io002/run.shrenamed

Only the mode changed.

test/io003/expected → test/io003/expected.outrenamed

The content is the same.

test/io003/run → test/io003/run.shrenamed

Only the mode changed.

test/layout001/expected → test/layout001/expected.outrenamed

The content is the same.

test/layout001/run → test/layout001/run.shrenamed

Only the mode changed.

test/literate001/expected → test/literate001/expected.outrenamed

The content is the same.

test/literate001/run → test/literate001/run.shrenamed

Only the mode changed.

test/meta001/expected → test/meta001/expected.outrenamed

The content is the same.

test/meta001/run → test/meta001/run.shrenamed

Only the mode changed.

test/meta002/expected → test/meta002/expected.outrenamed

The content is the same.

test/meta002/run → test/meta002/run.shrenamed

Only the mode changed.

test/meta003/expected → test/meta003/expected.outrenamed

The content is the same.

test/meta003/run → test/meta003/run.shrenamed

Only the mode changed.

test/meta004/expected → test/meta004/expected.outrenamed

The content is the same.

test/meta004/run → test/meta004/run.shrenamed

Only the mode changed.

test/pkg001/expected → test/pkg001/expected.outrenamed

The content is the same.

test/pkg001/run → test/pkg001/run.shrenamed

Only the mode changed.

test/pkg001/test-pkg.ipkg+3−3

@@ -12,6 +12,6 @@ license = BSD3 but see LICENSE for more information

1212brief = "This is a test package."

1313readme = README.md

1414version = 1234

15−homepage = http://www.idris-lang.org

16−sourceloc = http://ww.github.com/idris-lang/Idris-Dev

17−bugtracker = http://ww.github.com/idris-lang/Idris-Dev/issues

15+homepage = https://www.idris-lang.org

16+sourceloc = https://www.github.com/idris-lang/Idris-Dev

17+bugtracker = https://www.github.com/idris-lang/Idris-Dev/issues

test/pkg002/expected → test/pkg002/expected.outrenamed

The content is the same.

test/pkg002/run → test/pkg002/run.shrenamed

Only the mode changed.

test/pkg003/expected → test/pkg003/expected.outrenamed

The content is the same.

test/pkg003/run → test/pkg003/run.shrenamed

Only the mode changed.

test/pkg004/expected → test/pkg004/expected.outrenamed

The content is the same.

test/pkg004/run → test/pkg004/run.shrenamed

Only the mode changed.

test/pkg005/expected → test/pkg005/expected.outrenamed

The content is the same.

test/pkg005/run → test/pkg005/run.shrenamed

Only the mode changed.

test/pkg006/expected → test/pkg006/expected.outrenamed

The content is the same.

test/pkg006/run → test/pkg006/run.shrenamed

Only the mode changed.

test/pkg007/expected → test/pkg007/expected.outrenamed

The content is the same.

test/pkg007/input → test/pkg007/input.inrenamed

The content is the same.

test/pkg007/run → test/pkg007/run.shrenamed+1−1

@@ -2,6 +2,6 @@

22cd toy

33${IDRIS:-idris} $@ --build toy.ipkg --ibcsubdir ../ibcout

44cd ../ibcout

5−${IDRIS:-idris} $@ --quiet < ../input

5+${IDRIS:-idris} $@ --quiet < ../input.in

66cd ..

77rm -rf ibcout

test/pkg008/expected → test/pkg008/expected.outrenamed

The content is the same.

test/pkg008/run → test/pkg008/run.shrenamed

Only the mode changed.

test/pkg009/expected → test/pkg009/expected.outrenamed

The content is the same.

test/pkg009/run → test/pkg009/run.shrenamed

Only the mode changed.

test/pkg010/expecteddeleted−31

@@ -1,31 +0,0 @@

1−Uncaught error: user error (wrongopts.ipkg:4:1:

2− |

3−4 | <empty line>

4− | ^

5−Invalid option `-total'

6−

7−Usage: ([--nobanner] | [-q|--quiet] | [--ide-mode] | [--ide-mode-socket] |

8− [--client ARG] | [--log LEVEL] | [--logging-categories CATS] |

9− [--nobasepkgs] | [--noprelude] | [--nobuiltins] | [--check] |

10− [-o|--output FILE] | [--interface] | [--typeintype] | [--total] |

11− [--partial] | [--warnpartial] | [--warnreach] | [--warnipkg] |

12− [--nocoverage] | [--errorcontext] | [--info] | [--listlogcats] |

13− [--link] | [--listlibs] | [--libdir] | [--docdir] | [--include] | [--V2]

14− | [--V1] | [-V|--V0|--verbose] | [--ibcsubdir FILE] |

15− [-i|--idrispath ARG] | [--sourcepath ARG] | [--warn] |

16− [-p|--package ARG] | [--port PORT] | [--build IPKG] | [--install IPKG] |

17− [--repl IPKG] | [--clean IPKG] | [--mkdoc IPKG] | [--installdoc IPKG] |

18− [--checkpkg IPKG] | [--testpkg IPKG] | [--indent-with INDENT] |

19− [--indent-clause INDENT] | [--bytecode ARG] | [-S|--codegenonly] |

20− [-c|--compileonly] | [--dumpdefuns ARG] | [--dumpcases ARG] |

21− [--codegen TARGET] | [--portable-codegen TARGET] | [--cg-opt ARG] |

22− [-e|--eval EXPR] | [--execute] | [--exec EXPR] | [-X|--extension EXT] |

23− [--O3] | [--O2] | [--O1] | [--O0] | [--partial-eval] |

24− [--no-partial-eval] |

25− [--optimise-nat-like-types|--optimize-nat-like-types] |

26− [--no-optimise-nat-like-types|--no-optimize-nat-like-types] |

27− [-O|--level ARG] | [--target TRIPLE] | [--cpu CPU] | [--color|--colour]

28− | [--nocolor|--nocolour] | [--consolewidth WIDTH] | [--highlight] |

29− [--no-tactic-deprecation-warnings] |

30− [--allow-capitalized-pattern-variables]) [FILES] [-v|--version]

31−)

test/pkg010/expected.outnew file+29

@@ -0,0 +1,29 @@

1+Uncaught error: user error (wrongopts.ipkg:4:1:

2+ |

3+4 | <empty line>

4+ | ^

5+Invalid option `-total'

6+

7+Usage: [--nobanner | (-q|--quiet) | --ide-mode | --ide-mode-socket |

8+ --client ARG | --log LEVEL | --logging-categories CATS |

9+ --nobasepkgs | --noprelude | --nobuiltins | --check |

10+ (-o|--output FILE) | --interface | --typeintype | --total |

11+ --partial | --warnpartial | --warnreach | --warnipkg | --nocoverage |

12+ --errorcontext | --info | --listlogcats | --link | --listlibs |

13+ --libdir | --docdir | --include | --V2 | --V1 | (-V|--V0|--verbose) |

14+ --ibcsubdir FILE | (-i|--idrispath ARG) | --sourcepath ARG | --warn |

15+ (-p|--package ARG) | --port PORT | --build IPKG | --install IPKG |

16+ --repl IPKG | --clean IPKG | --mkdoc IPKG | --installdoc IPKG |

17+ --checkpkg IPKG | --testpkg IPKG | --indent-with INDENT |

18+ --indent-clause INDENT | --bytecode ARG | (-S|--codegenonly) |

19+ (-c|--compileonly) | --dumpdefuns ARG | --dumpcases ARG |

20+ --codegen TARGET | --portable-codegen TARGET | --cg-opt ARG |

21+ (-e|--eval EXPR) | --execute | --exec EXPR | (-X|--extension EXT) |

22+ --O3 | --O2 | --O1 | --O0 | --partial-eval | --no-partial-eval |

23+ (--optimise-nat-like-types|--optimize-nat-like-types) |

24+ (--no-optimise-nat-like-types|--no-optimize-nat-like-types) |

25+ (-O|--level ARG) | --target TRIPLE | --cpu CPU | (--color|--colour) |

26+ (--nocolor|--nocolour) | --consolewidth WIDTH | --highlight |

27+ --no-tactic-deprecation-warnings |

28+ --allow-capitalized-pattern-variables] [FILES] [-v|--version]

29+)

test/pkg010/run → test/pkg010/run.shrenamed

Only the mode changed.

test/prelude001/expected → test/prelude001/expected.outrenamed

The content is the same.

test/prelude001/run → test/prelude001/run.shrenamed

Only the mode changed.

test/primitives001/expected → test/primitives001/expected.outrenamed

The content is the same.

test/primitives001/input → test/primitives001/input.inrenamed

The content is the same.

test/primitives001/run → test/primitives001/run.shrenamed+1−1

@@ -2,5 +2,5 @@

22${IDRIS:-idris} $@ test005.idr -o test005

33./test005

44${IDRIS:-idris} $@ substring.idr -o substring

5−./substring < input

5+./substring < input.in

66rm -f test005 substring *.ibc

test/primitives002/expected → test/primitives002/expected.outrenamed

The content is the same.

test/primitives002/run → test/primitives002/run.shrenamed

Only the mode changed.

test/primitives003/expected → test/primitives003/expected.outrenamed

The content is the same.

test/primitives003/run → test/primitives003/run.shrenamed

Only the mode changed.

test/primitives004-disabled/expected → test/primitives004-disabled/expected.outrenamed

The content is the same.

test/primitives004-disabled/run → test/primitives004-disabled/run.shrenamed

Only the mode changed.

test/primitives005/expected → test/primitives005/expected.outrenamed

The content is the same.

test/primitives005/run → test/primitives005/run.shrenamed

The content is the same.

test/primitives006/expected → test/primitives006/expected.outrenamed

The content is the same.

test/primitives006/run → test/primitives006/run.shrenamed

Only the mode changed.

test/proof001/expected → test/proof001/expected.outrenamed

The content is the same.

test/proof001/run → test/proof001/run.shrenamed

Only the mode changed.

test/proof002/expected → test/proof002/expected.outrenamed

The content is the same.

test/proof002/run → test/proof002/run.shrenamed

Only the mode changed.

test/proof003/expected → test/proof003/expected.outrenamed

The content is the same.

test/proof003/run → test/proof003/run.shrenamed

Only the mode changed.

test/proof004/expected → test/proof004/expected.outrenamed

The content is the same.

test/proof004/run → test/proof004/run.shrenamed

Only the mode changed.

test/proof005/expected → test/proof005/expected.outrenamed

The content is the same.

test/proof005/run → test/proof005/run.shrenamed

Only the mode changed.

test/proof006/expected → test/proof006/expected.outrenamed

The content is the same.

test/proof006/run → test/proof006/run.shrenamed

Only the mode changed.

test/proof007/expected → test/proof007/expected.outrenamed

The content is the same.

test/proof007/run → test/proof007/run.shrenamed

Only the mode changed.

test/proof008/expected → test/proof008/expected.outrenamed

The content is the same.

test/proof008/run → test/proof008/run.shrenamed

Only the mode changed.

test/proof009/expected → test/proof009/expected.outrenamed

The content is the same.

test/proof009/input → test/proof009/input.inrenamed

The content is the same.

test/proof009/run → test/proof009/run.shrenamed+1−1

@@ -1,3 +1,3 @@

11#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --consolewidth 70 --quiet --port none proof009.idr < input

2+${IDRIS:-idris} $@ --consolewidth 70 --quiet --port none proof009.idr < input.in

33rm -f *.ibc

test/proof010/expected → test/proof010/expected.outrenamed

The content is the same.

test/proof010/run → test/proof010/run.shrenamed

Only the mode changed.

test/proof011/expected → test/proof011/expected.outrenamed

The content is the same.

test/proof011/run → test/proof011/run.shrenamed

Only the mode changed.

test/proofsearch001/expected → test/proofsearch001/expected.outrenamed

The content is the same.

test/proofsearch001/run → test/proofsearch001/run.shrenamed

Only the mode changed.

test/proofsearch002/expected → test/proofsearch002/expected.outrenamed

The content is the same.

test/proofsearch002/run → test/proofsearch002/run.shrenamed

Only the mode changed.

test/proofsearch003/expected → test/proofsearch003/expected.outrenamed

The content is the same.

test/proofsearch003/run → test/proofsearch003/run.shrenamed

Only the mode changed.

test/pruviloj001/expected → test/pruviloj001/expected.outrenamed

The content is the same.

test/pruviloj001/run → test/pruviloj001/run.shrenamed

Only the mode changed.

test/quasiquote001/expected → test/quasiquote001/expected.outrenamed

The content is the same.

test/quasiquote001/run → test/quasiquote001/run.shrenamed

Only the mode changed.

test/quasiquote002/expected → test/quasiquote002/expected.outrenamed

The content is the same.

test/quasiquote002/run → test/quasiquote002/run.shrenamed

Only the mode changed.

test/quasiquote003/expected → test/quasiquote003/expected.outrenamed

The content is the same.

test/quasiquote003/run → test/quasiquote003/run.shrenamed

Only the mode changed.

test/quasiquote004/expected → test/quasiquote004/expected.outrenamed

The content is the same.

test/quasiquote004/run → test/quasiquote004/run.shrenamed

Only the mode changed.

test/quasiquote005/expected → test/quasiquote005/expected.outrenamed

The content is the same.

test/quasiquote005/run → test/quasiquote005/run.shrenamed

Only the mode changed.

test/quasiquote006/expected → test/quasiquote006/expected.outrenamed

The content is the same.

test/quasiquote006/run → test/quasiquote006/run.shrenamed

Only the mode changed.

test/records001/expected → test/records001/expected.outrenamed

The content is the same.

test/records001/run → test/records001/run.shrenamed

Only the mode changed.

test/records002/expected → test/records002/expected.outrenamed

The content is the same.

test/records002/run → test/records002/run.shrenamed

Only the mode changed.

test/records003/expected → test/records003/expected.outrenamed

The content is the same.

test/records003/run → test/records003/run.shrenamed

Only the mode changed.

test/records004/expected → test/records004/expected.outrenamed

The content is the same.

test/records004/run → test/records004/run.shrenamed

Only the mode changed.

test/records005/expected → test/records005/expected.outrenamed

The content is the same.

test/records005/run → test/records005/run.shrenamed

Only the mode changed.

test/reg001/expected → test/reg001/expected.outrenamed

The content is the same.

test/reg001/run → test/reg001/run.shrenamed

Only the mode changed.

test/reg002/expected → test/reg002/expected.outrenamed

The content is the same.

test/reg002/run → test/reg002/run.shrenamed

Only the mode changed.

test/reg004/expected → test/reg004/expected.outrenamed

The content is the same.

test/reg004/run → test/reg004/run.shrenamed

Only the mode changed.

test/reg005/expected → test/reg005/expected.outrenamed

The content is the same.

test/reg005/run → test/reg005/run.shrenamed

Only the mode changed.

test/reg007/expected → test/reg007/expected.outrenamed

The content is the same.

test/reg007/run → test/reg007/run.shrenamed

Only the mode changed.

test/reg013/expected → test/reg013/expected.outrenamed

The content is the same.

test/reg013/run → test/reg013/run.shrenamed

Only the mode changed.

test/reg016/expected → test/reg016/expected.outrenamed

The content is the same.

test/reg016/run → test/reg016/run.shrenamed

Only the mode changed.

test/reg017/expected → test/reg017/expected.outrenamed

The content is the same.

test/reg017/run → test/reg017/run.shrenamed

Only the mode changed.

test/reg020/expected → test/reg020/expected.outrenamed

The content is the same.

test/reg020/run → test/reg020/run.shrenamed

Only the mode changed.

test/reg024/expected → test/reg024/expected.outrenamed

The content is the same.

test/reg024/run → test/reg024/run.shrenamed

Only the mode changed.

test/reg025/expected → test/reg025/expected.outrenamed

The content is the same.

test/reg025/run → test/reg025/run.shrenamed

Only the mode changed.

test/reg027/expected → test/reg027/expected.outrenamed

The content is the same.

test/reg027/run → test/reg027/run.shrenamed

Only the mode changed.

test/reg029/expected → test/reg029/expected.outrenamed

The content is the same.

test/reg029/run → test/reg029/run.shrenamed

Only the mode changed.

test/reg031/expected → test/reg031/expected.outrenamed

The content is the same.

test/reg031/run → test/reg031/run.shrenamed

Only the mode changed.

test/reg032/expected → test/reg032/expected.outrenamed

The content is the same.

test/reg032/run → test/reg032/run.shrenamed

Only the mode changed.

test/reg039/expected → test/reg039/expected.outrenamed

The content is the same.

test/reg039/run → test/reg039/run.shrenamed

Only the mode changed.

test/reg040/expected → test/reg040/expected.outrenamed

The content is the same.

test/reg040/run → test/reg040/run.shrenamed

Only the mode changed.

test/reg041/expected → test/reg041/expected.outrenamed

The content is the same.

test/reg041/run → test/reg041/run.shrenamed

Only the mode changed.

test/reg042/expected → test/reg042/expected.outrenamed

The content is the same.

test/reg042/run → test/reg042/run.shrenamed

Only the mode changed.

test/reg045/expected → test/reg045/expected.outrenamed

The content is the same.

test/reg045/run → test/reg045/run.shrenamed

Only the mode changed.

test/reg048/expected → test/reg048/expected.outrenamed

The content is the same.

test/reg048/run → test/reg048/run.shrenamed

Only the mode changed.

test/reg051-disabled/expected → test/reg051-disabled/expected.outrenamed

The content is the same.

test/reg051-disabled/run → test/reg051-disabled/run.shrenamed

Only the mode changed.

test/reg052/expected → test/reg052/expected.outrenamed

The content is the same.

test/reg052/run → test/reg052/run.shrenamed

Only the mode changed.

test/reg067/expected → test/reg067/expected.outrenamed

The content is the same.

test/reg067/run → test/reg067/run.shrenamed

Only the mode changed.

test/reg075/expected → test/reg075/expected.outrenamed

The content is the same.

test/reg075/input → test/reg075/input.inrenamed

The content is the same.

test/reg075/rundeleted−3

@@ -1,3 +0,0 @@

1−#!/usr/bin/env bash

2−${IDRIS:-idris} $@ --quiet --port none reg075.idr < input

3−rm -f *.ibc

test/reg075/run.shnew file+3

@@ -0,0 +1,3 @@

1+#!/usr/bin/env bash

2+${IDRIS:-idris} $@ --quiet --port none reg075.idr < input.in

3+rm -f *.ibc

test/reg076/expected → test/reg076/expected.outrenamed

The content is the same.

test/reg076/input → test/reg076/input.inrenamed

The content is the same.

test/reg076/run → test/reg076/run.shrenamed

Only the mode changed.

test/reg077/expected → test/reg077/expected.outrenamed

The content is the same.

test/reg077/run → test/reg077/run.shrenamed

Only the mode changed.

test/regression001/expected → test/regression001/expected.outrenamed

The content is the same.

test/regression001/run → test/regression001/run.shrenamed

Only the mode changed.

test/regression002/expected → test/regression002/expected.outrenamed

The content is the same.

test/regression002/run → test/regression002/run.shrenamed

Only the mode changed.

test/regression003/expected → test/regression003/expected.outrenamed

The content is the same.

test/regression003/run → test/regression003/run.shrenamed

Only the mode changed.

test/sourceLocation001/expected → test/sourceLocation001/expected.outrenamed

The content is the same.

test/sourceLocation001/run → test/sourceLocation001/run.shrenamed

Only the mode changed.

test/st001/expected → test/st001/expected.outrenamed

The content is the same.

test/st001/run → test/st001/run.shrenamed

Only the mode changed.

test/st001/test001.idr+1−1

@@ -40,7 +40,7 @@ readFileCount fh cnt =

4040

4141testFile : (ConsoleIO m, File m) => ST m () []

4242testFile = with ST do

43− Right fileHandle <- open "testFile" Read

43+ Right fileHandle <- open "testFile.in" Read

4444 | Left ferr => do putStrLn (show ferr)

4545 pure ()

4646 count <- new 0

test/st001/testFile → test/st001/testFile.inrenamed

The content is the same.

test/st002/expected → test/st002/expected.outrenamed

The content is the same.

test/st002/run → test/st002/run.shrenamed

Only the mode changed.

test/st002/test002.idr+1−1

@@ -40,7 +40,7 @@ readFileCount fh cnt =

4040

4141testFile : (ConsoleIO m, File m) => ST m () []

4242testFile = with ST do

43− Right fileHandle <- open "testFile" Read

43+ Right fileHandle <- open "testFile.in" Read

4444 | Left ferr => do putStrLn (show ferr)

4545 pure ()

4646 count <- new 0

test/st002/testFile → test/st002/testFile.inrenamed

The content is the same.

test/st003/expected → test/st003/expected.outrenamed

The content is the same.

test/st003/run → test/st003/run.shrenamed

Only the mode changed.

test/st003/test003.idr+1−1

@@ -7,7 +7,7 @@ import Control.ST.ImplicitCall

77

88testFile : (ConsoleIO m, File m) => ST m () []

99testFile = with ST do

10− Right str <- readFile "testFile"

10+ Right str <- readFile "testFile.in"

1111 | Left ferr => do putStrLn (show ferr)

1212 pure ()

1313 putStrLn str

test/st003/testFile → test/st003/testFile.inrenamed

The content is the same.

test/st004/expected → test/st004/expected.outrenamed

The content is the same.

test/st004/run → test/st004/run.shrenamed

Only the mode changed.

test/st005/expected → test/st005/expected.outrenamed

The content is the same.

test/st005/run → test/st005/run.shrenamed

Only the mode changed.

test/st006/expected → test/st006/expected.outrenamed

The content is the same.

test/st006/run → test/st006/run.shrenamed

Only the mode changed.

test/st007/expected → test/st007/expected.outrenamed

The content is the same.

test/st007/run → test/st007/run.shrenamed

Only the mode changed.

test/sugar001/expected → test/sugar001/expected.outrenamed

The content is the same.

test/sugar001/run → test/sugar001/run.shrenamed

Only the mode changed.

test/sugar002/expected → test/sugar002/expected.outrenamed

The content is the same.

test/sugar002/run → test/sugar002/run.shrenamed

Only the mode changed.

test/sugar003/expected → test/sugar003/expected.outrenamed

The content is the same.

test/sugar003/run → test/sugar003/run.shrenamed

Only the mode changed.

test/sugar004/expected → test/sugar004/expected.outrenamed

The content is the same.

test/sugar004/run → test/sugar004/run.shrenamed

Only the mode changed.

test/sugar005/expected → test/sugar005/expected.outrenamed

The content is the same.

test/sugar005/run → test/sugar005/run.shrenamed

Only the mode changed.

test/syntax001/expected → test/syntax001/expected.outrenamed

The content is the same.

test/syntax001/run → test/syntax001/run.shrenamed

Only the mode changed.

test/syntax002/expected → test/syntax002/expected.outrenamed

The content is the same.

test/syntax002/run → test/syntax002/run.shrenamed

Only the mode changed.

test/tactics001/expected → test/tactics001/expected.outrenamed

The content is the same.

test/tactics001/run → test/tactics001/run.shrenamed

Only the mode changed.

test/totality001/expected → test/totality001/expected.outrenamed

The content is the same.

test/totality001/run → test/totality001/run.shrenamed

Only the mode changed.

test/totality002/expected → test/totality002/expected.outrenamed

The content is the same.

test/totality002/run → test/totality002/run.shrenamed

Only the mode changed.

test/totality003/expected → test/totality003/expected.outrenamed

The content is the same.

test/totality003/run → test/totality003/run.shrenamed

Only the mode changed.

test/totality004/expected → test/totality004/expected.outrenamed

The content is the same.

test/totality004/run → test/totality004/run.shrenamed

Only the mode changed.

test/totality005/expected → test/totality005/expected.outrenamed

The content is the same.

test/totality005/run → test/totality005/run.shrenamed

Only the mode changed.

test/totality006/expected → test/totality006/expected.outrenamed

The content is the same.

test/totality006/run → test/totality006/run.shrenamed

Only the mode changed.

test/totality007/expected → test/totality007/expected.outrenamed

The content is the same.

test/totality007/run → test/totality007/run.shrenamed

Only the mode changed.

test/totality008/expected → test/totality008/expected.outrenamed

The content is the same.

test/totality008/run → test/totality008/run.shrenamed

Only the mode changed.

test/totality009/expected → test/totality009/expected.outrenamed

The content is the same.

test/totality009/run → test/totality009/run.shrenamed

Only the mode changed.

test/totality010/expected → test/totality010/expected.outrenamed

The content is the same.

test/totality010/run → test/totality010/run.shrenamed

Only the mode changed.

test/totality011/expected → test/totality011/expected.outrenamed

The content is the same.

test/totality011/run → test/totality011/run.shrenamed

Only the mode changed.

test/totality012/expected → test/totality012/expected.outrenamed

The content is the same.

test/totality012/run → test/totality012/run.shrenamed

Only the mode changed.

test/totality013/expected → test/totality013/expected.outrenamed

The content is the same.

test/totality013/run → test/totality013/run.shrenamed

Only the mode changed.

test/totality014/expected → test/totality014/expected.outrenamed

The content is the same.

test/totality014/run → test/totality014/run.shrenamed

Only the mode changed.

test/totality015/expected → test/totality015/expected.outrenamed

The content is the same.

test/totality015/run → test/totality015/run.shrenamed

Only the mode changed.

test/totality016/expected → test/totality016/expected.outrenamed

The content is the same.

test/totality016/run → test/totality016/run.shrenamed

Only the mode changed.

test/totality017/expected → test/totality017/expected.outrenamed

The content is the same.

test/totality017/run → test/totality017/run.shrenamed

Only the mode changed.

test/totality018/expected → test/totality018/expected.outrenamed

The content is the same.

test/totality018/run → test/totality018/run.shrenamed

Only the mode changed.

test/totality019/expected → test/totality019/expected.outrenamed

The content is the same.

test/totality019/run → test/totality019/run.shrenamed

Only the mode changed.

test/totality020/expected → test/totality020/expected.outrenamed

The content is the same.

test/totality020/run → test/totality020/run.shrenamed

Only the mode changed.

test/totality021/expected → test/totality021/expected.outrenamed

The content is the same.

test/totality021/run → test/totality021/run.shrenamed

Only the mode changed.

test/totality022/expected → test/totality022/expected.outrenamed

The content is the same.

test/totality022/run → test/totality022/run.shrenamed

Only the mode changed.

test/totality023/expected → test/totality023/expected.outrenamed

The content is the same.

test/totality023/run → test/totality023/run.shrenamed

Only the mode changed.

test/totality024/expected → test/totality024/expected.outrenamed

The content is the same.

test/totality024/run → test/totality024/run.shrenamed

Only the mode changed.

test/totality025/expected → test/totality025/expected.outrenamed

The content is the same.

test/totality025/run → test/totality025/run.shrenamed

Only the mode changed.

test/totality026/expected → test/totality026/expected.outrenamed

The content is the same.

test/totality026/run → test/totality026/run.shrenamed

Only the mode changed.

test/tutorial001/expected → test/tutorial001/expected.outrenamed

The content is the same.

test/tutorial001/run → test/tutorial001/run.shrenamed

Only the mode changed.

test/tutorial002/expected → test/tutorial002/expected.outrenamed

The content is the same.

test/tutorial002/run → test/tutorial002/run.shrenamed

Only the mode changed.

test/tutorial003/expected → test/tutorial003/expected.outrenamed

The content is the same.

test/tutorial003/run → test/tutorial003/run.shrenamed

Only the mode changed.

test/tutorial004/expected → test/tutorial004/expected.outrenamed

The content is the same.

test/tutorial004/run → test/tutorial004/run.shrenamed

Only the mode changed.

test/tutorial005/expected → test/tutorial005/expected.outrenamed

The content is the same.

test/tutorial005/run → test/tutorial005/run.shrenamed

Only the mode changed.

test/tutorial006/expected → test/tutorial006/expected.outrenamed

The content is the same.

test/tutorial006/run → test/tutorial006/run.shrenamed

Only the mode changed.

test/tutorial007/expected → test/tutorial007/expected.outrenamed

The content is the same.

test/tutorial007/run → test/tutorial007/run.shrenamed

Only the mode changed.

test/unique001/expected → test/unique001/expected.outrenamed

The content is the same.

test/unique001/run → test/unique001/run.shrenamed

Only the mode changed.

test/unique004/expected → test/unique004/expected.outrenamed

The content is the same.

test/unique004/run → test/unique004/run.shrenamed

Only the mode changed.

test/universes001/expected → test/universes001/expected.outrenamed

The content is the same.

test/universes001/run → test/universes001/run.shrenamed

Only the mode changed.

test/universes002/expected → test/universes002/expected.outrenamed

The content is the same.

test/universes002/run → test/universes002/run.shrenamed

Only the mode changed.

test/views001/expected → test/views001/expected.outrenamed

The content is the same.

test/views001/run → test/views001/run.shrenamed

Only the mode changed.

test/views002/expected → test/views002/expected.outrenamed

The content is the same.

test/views002/run → test/views002/run.shrenamed

Only the mode changed.

test/views003/expected → test/views003/expected.outrenamed

The content is the same.

test/views003/run → test/views003/run.shrenamed

Only the mode changed.