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assign binds looser than application.

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Rob Rix 2019-07-23 15:07:21 -04:00
parent 59af553279
commit 08878f1a18
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1 changed files with 4 additions and 5 deletions
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9
semantic-core/src/Data/Core/Parser.hs
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@ -50,7 +50,10 @@ core :: (TokenParsing m, Monad m) => m (Term Core User)
core = expr
expr :: (TokenParsing m, Monad m) => m (Term Core User)
expr = application
expr = assign
assign :: (TokenParsing m, Monad m) => m (Term Core User)
assign = application <**> (flip (Core..=) <$ symbolic '=' <*> application <|> pure id) <?> "assignment"
application :: (TokenParsing m, Monad m) => m (Term Core User)
application = projection `chainl1` (pure (Core.$$))
@ -66,7 +69,6 @@ atom = choice
, lit
, ident
, rec
, assign
, parens expr
]
@ -89,9 +91,6 @@ ifthenelse = Core.if'
rec :: (TokenParsing m, Monad m) => m (Term Core User)
rec = Core.rec <$ reserved "rec" <*> name <* symbolic '=' <*> expr <?> "recursive binding"
assign :: (TokenParsing m, Monad m) => m (Term Core User)
assign = (Core..=) <$> try (lvalue <* symbolic '=') <*> expr <?> "assignment"
edge :: (TokenParsing m, Monad m) => m (Term Core User)
edge = Core.load <$ reserved "load" <*> expr