X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=parse.icl;h=36791241438c6a3c37c0de62d7520ddb34cc6d8c;hb=42f469bb622f254f8008b064bdb720c72daaf2e3;hp=34ec15b2f9109e6bc0ead07efffac329cee5bee9;hpb=f297ddf3ea579fcafe3111510b385da1ba150a89;p=cc1516.git

diff --git a/parse.icl b/parse.icl
index 34ec15b..3679124 100644
--- a/parse.icl
+++ b/parse.icl
@@ -20,7 +20,10 @@ import AST
 
 parser :: LexerOutput -> ParserOutput
 parser (Left e) = Left e
-parser (Right r) = fst $ runParser parseProgram r
+parser (Right r) = case runParser parseProgram r of
+	(Right ast, [(p, t):xs]) = Left $ PositionalError p.line p.col (
+		"Unable to parse from: " +++ printToString t)
+	x = fst x
 
 parseProgram :: Parser Token AST
 parseProgram = AST <$> (many parseVarDecl) <*> (some parseFunDecl)
@@ -65,7 +68,6 @@ parseStmt = parseIfStmt <|> parseWhileStmt <|>
 		parseBlock = parseBCBraces (many parseStmt)
 
 		parseOneLine :: Parser Token [Stmt]
-		//first pure makes singleton list from the statement
 		parseOneLine = pure <$> parseStmt
 
 parseFunType :: Parser Token FunType
@@ -119,8 +121,8 @@ parseExpr = //Operators in order of binding strength
 
 		parseOpL :: (Parser Token Op2) (Parser Token Expr) -> Parser Token Expr
 		parseOpL ops prev = peekPos >>= \pos-> prev >>= \e1->many (
-				ops >>= \op->prev >>= \e->pure (op, e)
-			) >>= \moe->foldM (\e->(\(op,e2)->pure $ Op2Expr pos e op e2)) e1 moe
+				ops >>= \op->prev >>= \e->pure (op, e))
+			>>= \moe->foldM (\e->(\(op,e2)->pure $ Op2Expr pos e op e2)) e1 moe
 
 		parseBasicExpr :: Parser Token Expr
 		parseBasicExpr = peekPos >>= \pos ->
@@ -136,7 +138,8 @@ parseExpr = //Operators in order of binding strength
 			(VarExpr pos <$> parseVarDef)
 
 parseFunCall :: Parser Token FunCall
-parseFunCall = FunCall <$> parseIdent <*> (parseBBraces $ parseSepList CommaToken parseExpr)
+parseFunCall = FunCall <$> parseIdent <*> 
+	(parseBBraces $ parseSepList CommaToken parseExpr)
 
 parseVarDef :: Parser Token VarDef
 parseVarDef = liftM2 VarDef