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Label compound and assignment parsers and use infix chainl1.

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This commit is contained in:
Patrick Thomson 2019-06-04 11:34:49 -04:00
parent e9b0c4548f
commit 01a4bd2ed4
1 changed files with 3 additions and 3 deletions
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6
semantic-core/src/Data/Core/Parser.hs
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@ -47,7 +47,7 @@ core :: (TokenParsing m, Monad m) => m Core
core = expr
expr :: (TokenParsing m, Monad m) => m Core
expr = chainl1 atom go where
expr = atom `chainl1` go where
go = choice [ (:.) <$ dot
, (:$) <$ notFollowedBy dot
]
@ -64,7 +64,7 @@ atom = choice
]
comp :: (TokenParsing m, Monad m) => m Core
comp = braces (sconcat <$> sepEndByNonEmpty expr semi)
comp = braces (sconcat <$> sepEndByNonEmpty expr semi) <?> "compound statement"
ifthenelse :: (TokenParsing m, Monad m) => m Core
ifthenelse = If
@ -74,7 +74,7 @@ ifthenelse = If
<?> "if-then-else statement"
assign :: (TokenParsing m, Monad m) => m Core
assign = (:=) <$> try (lvalue <* symbolic '=') <*> core
assign = (:=) <$> try (lvalue <* symbolic '=') <*> core <?> "assignment"
edge :: (TokenParsing m, Monad m) => m Core
edge = kw <*> expr where kw = choice [ Edge Lexical <$ reserved "lexical"