* Inline typeclasses and apply projections.
This draft PR:
* adds a Subst module for substitution within LF expressions.
This implementation piggybacks on the existing type
substition. But there are not enough tests yet.
* passes World data into the simplifier, in order to have
have the ability to inline functions (selectively)
* inlines typeclass dictionaries and projection functions
* beta reduces type lambdas (which are just ignored by
speedy afaik)
* beta reduces lambdas that are passed units or dictionaries
* runs the simplifier twice so it has a change to
perform the inlining, reduction, AND projection
-- this is probably avoidable by sequencing the
simplifier steps in a specific order, but running
the simplifier twice is simple enough for now.
* together, these fix#5748 (see result on a toy module)
TODO:
* add lots of tests for Subst
* run this on a benchmark to see how big of a difference it makes.
* reduce the jankiness of running the simplifier twice.
Results:
DAML input:
```
module Main where
hello : Int
hello = 10 + 30
```
Original DAML-LF output:
```
module Main where
@location(7:0-7:5)
def hello : Int64 =
a284919a95c4a515cd1efac0d89be302d0e9d61e692a2176128c871ad8067e36:GHC.Num:+
@Int64
a284919a95c4a515cd1efac0d89be302d0e9d61e692a2176128c871ad8067e36:GHC.Num:$fAdditiveInt
10
30
```
Current DAML-LF output:
```
module Main where
@location(7:0-7:5)
def hello : Int64 = ADD_INT64 10 30
```
changelog_begin
changelog_end
* Update copyright header
* Lint
* More direct typeclass simplification
* extendWorldSelf + getTypeClassDictionary
* Fix visual
* Fix visual comment
* Disable cross-module inlining for incremental builds
* Cleanup subst/freevars.
* copyright header
* Alpha equivalence for LF expressions.
* copyright header
* lots of tests
* fix comment
* Apply review suggestions
* Make name collision check more strict
This PR extends the name collision check to catch collisions between
A:B (type B in module A) and module A.B.C. For now this is just a
warning and not an error. Once we turn it into an error, we also need
to add this to the Scala collision checker.
There is a fair bit of plumbing required to make warnings work but on
the plus side we get multiple errors at once now instead of erroring
out on the first one.
changelog_begin
- [DAML Compiler] The name collision check has been extended to also
count the case as a collision where you have a type B in module A and a module
A.B.C (but no module A.B). This is a warning in this SDK release but
will become an error in a future release. The typescript codegen is
not usable on packages that don’t uphold this restriction.
changelog_end
* Address review comments
* CHANGELOG_BEGIN
Type-check type synonyms.
CHANGELOG_END
* placate HLint
* comments
* Add an example that requires the check in kindOf
* check types containing syn-apps are well formed even when there is no expression of that type
* show type mismatch error after synonyms are expanded
* typeOf calls expandTypeSynonyms; track vars bound by TForall during expansion
* test interaction of syn-expansion and free-vars; add one bigger testcase
* extend bigger example with pointed typeclass, having functor as a super class
Co-authored-by: Moritz Kiefer <moritz.kiefer@purelyfunctional.org>
