Agda-2.2.8: A dependently typed functional programming language and proof assistant



The parser doesn't know about operators and parses everything as normal function application. This module contains the functions that parses the operators properly. For a stand-alone implementation of this see src/prototyping/mixfix.

It also contains the function that puts parenthesis back given the precedence of the context.



parseLHS :: Maybe Name -> Pattern -> ScopeM PatternSource

Parses a left-hand side, and makes sure that it defined the expected name. TODO: check the arities of constructors. There is a possible ambiguity with postfix constructors: Assume _ * is a constructor. Then 'true *' can be parsed as either the intended _* applied to true, or as true applied to a variable *. If we check arities this problem won't appear.

paren :: Monad m => (Name -> m Fixity) -> Expr -> m (Precedence -> Expr)Source