mirror of
https://github.com/kanaka/mal.git
synced 2024-09-19 09:38:28 +03:00
dd7a4f55f3
Fixes made to: ada, c, chuck, clojure, coffee, common-lisp, cpp, crystal, d, dart, elm, erlang, es6, factor, fsharp, gnu-smalltalk, groovy, guile, haxe, hy, js, livescript, matlab, miniMAL, nasm, nim, objc, objpascal, ocaml, perl, perl6, php, plsql, ps, python, r, rpython, ruby, scheme, swift3, tcl, ts, vb, vimscript, wasm, yorick. Catchless try* test is an optional test. Not all implementations support catchless try* but a number were fixed so they at least don't crash on catchless try*.
314 lines
10 KiB
Smalltalk
314 lines
10 KiB
Smalltalk
String extend [
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String >> loadRelative [
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| scriptPath scriptDirectory |
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scriptPath := thisContext currentFileName.
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scriptDirectory := FilePath stripFileNameFor: scriptPath.
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FileStream fileIn: (FilePath append: self to: scriptDirectory)
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]
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]
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'readline.st' loadRelative.
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'util.st' loadRelative.
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'types.st' loadRelative.
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'reader.st' loadRelative.
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'printer.st' loadRelative.
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'env.st' loadRelative.
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'func.st' loadRelative.
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'core.st' loadRelative.
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Object subclass: MAL [
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MAL class >> READ: input [
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^Reader readStr: input
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]
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MAL class >> evalAst: sexp env: env [
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sexp type = #symbol ifTrue: [
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^env get: sexp value
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].
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sexp type = #list ifTrue: [
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^self evalList: sexp env: env class: MALList
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].
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sexp type = #vector ifTrue: [
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^self evalList: sexp env: env class: MALVector
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].
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sexp type = #map ifTrue: [
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^self evalList: sexp env: env class: MALMap
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].
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^sexp
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]
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MAL class >> evalList: sexp env: env class: aClass [
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| items |
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items := sexp value collect:
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[ :item | self EVAL: item env: env ].
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^aClass new: items
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]
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MAL class >> quasiquote: ast [
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| result a a0 a0_ a0_0 rest |
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ast isPair ifFalse: [
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result := {MALSymbol new: #quote. ast}.
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^MALList new: (OrderedCollection from: result)
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].
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a := ast value.
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a0 := a first.
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(a0 type = #symbol and: [ a0 value = #unquote ]) ifTrue: [ ^a second ].
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a0 isPair ifTrue: [
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a0_ := a0 value.
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a0_0 := a0_ first.
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(a0_0 type = #symbol and:
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[ a0_0 value = #'splice-unquote' ]) ifTrue: [
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rest := MALList new: a allButFirst.
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result := {MALSymbol new: #concat.
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a0_ second.
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self quasiquote: rest}.
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^MALList new: (OrderedCollection from: result)
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]
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].
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rest := MALList new: a allButFirst.
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result := {MALSymbol new: #cons. self quasiquote: a0.
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self quasiquote: rest}.
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^MALList new: (OrderedCollection from: result)
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]
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MAL class >> isMacroCall: ast env: env [
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| a0 a0_ f |
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ast type = #list ifTrue: [
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a0 := ast value first.
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a0_ := a0 value.
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a0 type = #symbol ifTrue: [
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f := env find: a0_.
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(f notNil and: [ f type = #func ]) ifTrue: [
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^f isMacro
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]
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]
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].
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^false
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]
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MAL class >> macroexpand: aSexp env: env [
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| sexp |
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"NOTE: redefinition of method arguments is not allowed"
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sexp := aSexp.
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[ self isMacroCall: sexp env: env ] whileTrue: [
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| ast a0_ macro rest |
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ast := sexp value.
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a0_ := ast first value.
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macro := env find: a0_.
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rest := ast allButFirst.
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sexp := macro fn value: rest.
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].
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^sexp
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]
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MAL class >> EVAL: aSexp env: anEnv [
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| sexp env ast a0 a0_ a1 a1_ a2 a2_ a3 forms function args |
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"NOTE: redefinition of method arguments is not allowed"
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sexp := aSexp.
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env := anEnv.
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[
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[ :continue |
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sexp type ~= #list ifTrue: [
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^self evalAst: sexp env: env
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].
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sexp value isEmpty ifTrue: [
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^sexp
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].
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sexp := self macroexpand: sexp env: env.
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sexp type ~= #list ifTrue: [
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^self evalAst: sexp env: env
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].
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ast := sexp value.
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a0 := ast first.
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a0_ := ast first value.
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a0_ = #'def!' ifTrue: [
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| result |
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a1_ := ast second value.
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a2 := ast third.
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result := self EVAL: a2 env: env.
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env set: a1_ value: result.
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^result
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].
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a0_ = #'defmacro!' ifTrue: [
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| result |
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a1_ := ast second value.
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a2 := ast third.
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result := self EVAL: a2 env: env.
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result isMacro: true.
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env set: a1_ value: result.
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^result
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].
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a0_ = #'macroexpand' ifTrue: [
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a1 := ast second.
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^self macroexpand: a1 env: env
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].
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a0_ = #'let*' ifTrue: [
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| env_ |
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env_ := Env new: env.
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a1_ := ast second value.
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a2 := ast third.
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1 to: a1_ size by: 2 do:
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[ :i | env_ set: (a1_ at: i) value
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value: (self EVAL: (a1_ at: i + 1)
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env: env_) ].
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env := env_.
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sexp := a2.
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continue value "TCO"
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].
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a0_ = #do ifTrue: [
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| forms last |
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ast size < 2 ifTrue: [
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forms := {}.
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last := MALObject Nil.
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] ifFalse: [
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forms := ast copyFrom: 2 to: ast size - 1.
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last := ast last.
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].
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forms do: [ :form | self EVAL: form env: env ].
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sexp := last.
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continue value "TCO"
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].
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a0_ = #if ifTrue: [
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| condition |
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a1 := ast second.
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a2 := ast third.
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a3 := ast at: 4 ifAbsent: [ MALObject Nil ].
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condition := self EVAL: a1 env: env.
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(condition type = #false or:
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[ condition type = #nil ]) ifTrue: [
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sexp := a3
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] ifFalse: [
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sexp := a2
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].
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continue value "TCO"
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].
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a0_ = #quote ifTrue: [
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a1 := ast second.
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^a1
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].
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a0_ = #quasiquote ifTrue: [
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| result |
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a1 := ast second.
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sexp := self quasiquote: a1.
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continue value "TCO"
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].
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a0_ = #'try*' ifTrue: [
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| A B C |
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A := ast second.
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ast at: 3 ifAbsent: [
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^self EVAL: A env: env.
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].
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a2_ := ast third value.
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B := a2_ second value.
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C := a2_ third.
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^[ self EVAL: A env: env ] on: MALError do:
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[ :err |
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| data env_ result |
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data := err data.
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data isString ifTrue: [
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data := MALString new: data
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].
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env_ := Env new: env binds: {B} exprs: {data}.
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err return: (self EVAL: C env: env_)
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]
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].
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a0_ = #'fn*' ifTrue: [
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| binds env_ fn |
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a1_ := ast second value.
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binds := a1_ collect: [ :item | item value ].
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a2 := ast third.
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fn := [ :args |
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self EVAL: a2 env:
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(Env new: env binds: binds exprs: args) ].
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^Func new: a2 params: binds env: env fn: fn
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].
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forms := (self evalAst: sexp env: env) value.
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function := forms first.
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args := forms allButFirst asArray.
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function type = #fn ifTrue: [ ^function fn value: args ].
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function type = #func ifTrue: [
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| env_ |
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sexp := function ast.
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env_ := Env new: function env binds: function params
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exprs: args.
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env := env_.
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continue value "TCO"
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]
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] valueWithExit
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] repeat.
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]
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MAL class >> PRINT: sexp [
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^Printer prStr: sexp printReadably: true
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]
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MAL class >> rep: input env: env [
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^self PRINT: (self EVAL: (self READ: input) env: env)
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]
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]
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| input historyFile replEnv argv |
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historyFile := '.mal_history'.
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ReadLine readHistory: historyFile.
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replEnv := Env new: nil.
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argv := Smalltalk arguments.
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argv notEmpty ifTrue: [ argv := argv allButFirst ].
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argv := OrderedCollection from: (argv collect: [ :arg | MALString new: arg ]).
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Core Ns keysAndValuesDo: [ :op :block | replEnv set: op value: block ].
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replEnv set: #eval value: (Fn new: [ :args | MAL EVAL: args first env: replEnv ]).
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replEnv set: #'*ARGV*' value: (MALList new: argv).
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MAL rep: '(def! not (fn* (a) (if a false true)))' env: replEnv.
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MAL rep: '(def! load-file (fn* (f) (eval (read-string (str "(do " (slurp f) ")")))))' env: replEnv.
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MAL rep: '(defmacro! cond (fn* (& xs) (if (> (count xs) 0) (list ''if (first xs) (if (> (count xs) 1) (nth xs 1) (throw "odd number of forms to cond")) (cons ''cond (rest (rest xs)))))))' env: replEnv.
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MAL rep: '(defmacro! or (fn* (& xs) (if (empty? xs) nil (if (= 1 (count xs)) (first xs) `(let* (or_FIXME ~(first xs)) (if or_FIXME or_FIXME (or ~@(rest xs))))))))' env: replEnv.
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Smalltalk arguments notEmpty ifTrue: [
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MAL rep: '(load-file "', Smalltalk arguments first, '")' env: replEnv
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] ifFalse: [
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[ input := ReadLine readLine: 'user> '. input isNil ] whileFalse: [
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input isEmpty ifFalse: [
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ReadLine addHistory: input.
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ReadLine writeHistory: historyFile.
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[ (MAL rep: input env: replEnv) displayNl ]
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on: MALEmptyInput do: [ #return ]
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on: MALError do:
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[ :err | ('error: ', err messageText) displayNl. #return ].
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]
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].
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'' displayNl.
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]
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