#12942: Add infix flag for class and data declarations -------------------------------------+------------------------------------- Reporter: alanz | Owner: alanz Type: task | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: #3384 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- At the moment, data and type declarations using infix formatting produce the same AST as those using prefix. So {{{#!hs type a ++ b = c }}} and {{{#!hs type (++) a b = c }}} cannot be distinguished in the parsed source, without looking at the `OccName` details of the constructor being defined. Having access to the `OccName` requires an additional constraint which explodes out over the entire AST because of its recursive definitions. In keeping with moving the parsed source to more directly reflect the source code as parsed, add a specific flag to the declaration to indicate the fixity, as used in a `Match` now too. Note: this flag is to capture the fixity used for the lexical definition of the type, primarily for use by `ppr` and `ghc-exactprint`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12942 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler