import lex
import sem
import AST
+import gen
from yard import :: Error, instance toString Error
:: Opts = {
lex :: Bool,
parse :: Bool,
sem :: Bool,
+ gen :: Bool,
fp :: Maybe String,
help :: Bool}
derive gPrint TokenValue
+preamble :: AST -> AST
+preamble (AST fd) = AST (pre ++ fd)
+ where
+ pre = [
+ FunDecl zero "1printstr" ["x"] Nothing [] [
+ IfStmt (FunExpr zero "isEmpty" [VarExpr zero (VarDef "x" [])] [])
+ []
+ [FunStmt "1printchar" [VarExpr zero (VarDef "x" [FieldHd])] []
+ ,FunStmt "1printstr" [VarExpr zero (VarDef "x" [FieldTl])] []]]
+ ,
+ FunDecl zero "1printbool" ["x"] Nothing [] [
+ IfStmt (VarExpr zero (VarDef "x" []))
+ [FunStmt "1printstr" [strOp2 $ fromString "True"] []]
+ [FunStmt "1printstr" [strOp2 $ fromString "False"] []]
+ ]]
+
+ strOp2 :: [Char] -> Expr
+ strOp2 [] = EmptyListExpr zero
+ strOp2 [x:xs] = Op2Expr zero (CharExpr zero x) BiCons (strOp2 xs)
+
Start :: *World -> *World
Start w
# (args, w) = parseArgs w
<<< " --version Show the version\n"
<<< " --[no-]lex Lexer output(default: disabled)\n"
<<< " --[no-]parse Parser output(default: disabled)\n"
- <<< " --[no-]sem Semantic analysis output(default: enabled)\n"
+ <<< " --[no-]sem Semantic analysis output(default: disabled)\n"
+ <<< " --[no-]code Code generation output(default: enabled)\n"
= snd $ fclose stdin w
# (contents, stdin, w) = readFileOrStdin stdin args.fp w
= case contents of
(Left cs) = snd $ fclose (stdin <<< cs) w
(Right cs) = case lexer cs of
- (Left e) = snd $ fclose (stdin <<< toString e) w
+ (Left e) = snd $ fclose (stdin <<< toString e <<< "\n") w
(Right lexOut)
# stdin = if (not args.lex) stdin (
stdin <<< "//LEXER\n" <<< printTokens lexOut <<< "//LEXER\n")
= case parser lexOut of
- (Left e) = snd $ fclose (stdin <<< toString e) w
+ (Left e) = snd $ fclose (stdin <<< toString e <<< "\n") w
(Right parseOut)
# stdin = if (not args.parse) stdin (
stdin <<< "//PARSER\n" <<< toString parseOut <<< "//PARSER\n")
- = case sem parseOut of
- (Left e) = snd $ fclose (stdin <<< join "\n" (map toString e)) w
- (Right constraints)
+ = case sem (preamble parseOut) of
+ (Left e) = snd $ fclose (stdin <<< join "\n" (map toString e) <<< "\n") w
+ (Right ast)
# stdin = if (not args.sem) stdin (stdin
- <<< "//SEM G\n" <<< printConstraints constraints <<< "//SEMA\n")
- = snd $ fclose (stdin <<< "\n") w
+ <<< "//SEM G\n" <<< toString ast <<< "//SEMA\n")
+ = case gen ast of
+ (Left e) = snd $ fclose (stdin <<< e) w
+ (Right asm)
+ # stdin = if (not args.gen) stdin (stdin
+ <<< ";CODE GEN\n" <<< asm <<< "\n;CODE GEN\n")
+ = snd $ fclose (stdin <<< "\n") w
where
printConstraints :: Constraints -> String
printConstraints [] = ""
version=False,
lex=False,
parse=False,
- sem=True,
+ sem=False,
+ gen=True,
fp=Nothing,
help=False}, w)
where
pa ["--no-parse":r] o = pa r {o & parse=False}
pa ["--sem":r] o = pa r {o & sem=True}
pa ["--no-sem":r] o = pa r {o & sem=False}
+ pa ["--code":r] o = pa r {o & gen=True}
+ pa ["--no-code":r] o = pa r {o & gen=False}
pa [x:r] o = pa r {o & fp=Just x}
readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)