X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=src%2Fparse.icl;h=edc23ac51c1b35e0f0470935d8671c684e1d48e4;hb=da0449d1b0998b76941699ace4a806022b52523d;hp=b3046e0ff3e7b13a7265a4f99e774cdb696cdc20;hpb=798defc398c2e3df810cc8fd3dccf861103006a5;p=cc1516.git diff --git a/src/parse.icl b/src/parse.icl index b3046e0..edc23ac 100644 --- a/src/parse.icl +++ b/src/parse.icl @@ -12,6 +12,7 @@ import Control.Applicative import Data.Func from Data.List import intercalate, replicate, instance Functor [] from Text import class Text(concat), instance Text String +import GenPrint import yard import lex @@ -51,10 +52,11 @@ parseStmt = parseIfStmt <|> parseWhileStmt <|> parseIfStmt :: Parser Token Stmt parseIfStmt = liftM3 IfStmt - (satTok IfToken *> parseBBraces parseExpr) - (parseBlock <|> parseOneLine) - (liftM (fromMaybe []) - (optional (satTok ElseToken *> (parseBlock<|> parseOneLine)))) + (satTok IfToken *> parseBBraces parseExpr) + (parseBlock <|> parseOneLine) + (liftM (fromMaybe []) + (optional (satTok ElseToken *> (parseBlock<|> parseOneLine)))) + parseWhileStmt :: Parser Token Stmt parseWhileStmt = satTok WhileToken *> @@ -171,9 +173,12 @@ trans2 t f = satTok t >>= \(_, r).pure (f r) trans1 :: TokenValue a -> Parser Token a trans1 t r = trans2 t $ const r +derive gPrint TokenValue derive gEq TokenValue satTok :: TokenValue -> Parser Token Token -satTok t = satisfy $ eq t +satTok t = top >>= \tok=:(pos, tv) -> if (eq t tok) + (return tok) + (fail (printToString tv+++printToString t, pos)) where eq (IdentToken _) (_, IdentToken _) = True eq (NumberToken _) (_, NumberToken _) = True @@ -182,7 +187,7 @@ satTok t = satisfy $ eq t parseSepList :: TokenValue (Parser Token a) -> Parser Token [a] parseSepList sep p = - (some (p <* satTok sep) >>= \es->p >>= \e.pure $ reverse [e:es]) <|> + (liftM2 (\es->(\e->reverse [e:es])) (some (p <* satTok sep)) p) <|> (liftM pure p) <|> pure empty parseIdent :: Parser Token String @@ -202,8 +207,8 @@ instance print FunDecl where print (FunDecl i as t vs ss) = ["\n", i, " (":printersperse "," as] ++ [") :: ":print t] ++ - ["{":printersperse "\n\t" vs] ++ - ["\n":printStatements ss 1] ++ ["}"] + ["{\n\t":printersperse "\n\t" vs] ++ + ["\n":printStatements ss 1] ++ ["}\n"] printStatements :: [Stmt] Int -> [String] printStatements [] i = [] @@ -220,7 +225,7 @@ printStatements [s:ss] i = (case s of ) ++ printStatements ss i where printCodeBlock :: [Stmt] Int -> [String] - printCodeBlock [] _ = ["{}"] + printCodeBlock [] _ = ["{}\n"] printCodeBlock [x] i = ["\n":printStatements [x] (i+1)] printCodeBlock x i = ["{\n":printStatements x (i+1)] ++ indent i ["}\n"]