sem.dcl

   1 definition module sem
   2
   3 import qualified Data.Map as Map
   4 from Data.Either import :: Either
   5 from AST import :: AST, :: Pos, :: Type, :: FieldSelector
   6 from StdOverloaded import class toString
   7
   8 :: SemError
   9         = ParseError Pos String
  10         | UnifyError Pos Type Type
  11     | FieldSelectorError Pos Type FieldSelector
  12     | UndeclaredVariableError Pos String
  13         | Error String
  14 :: Gamma
  15 :: SemOutput :== Either [SemError] (AST, Gamma)
  16
  17 instance toString SemError
  18 instance toString Gamma
  19
  20 sem :: AST -> SemOutput