{-# LANGUAGE OverloadedStrings #-}

module Language.Fixpoint.Solver.Common (askSMT, toSMT) where

import Language.Fixpoint.Types.Config (Config)
import Language.Fixpoint.Smt.Interface (Context(..), checkValidWithContext)
import Language.Fixpoint.Types
import Language.Fixpoint.Types.Visitor (kvarsExpr)
import Language.Fixpoint.Defunctionalize (defuncAny)
import Language.Fixpoint.SortCheck (elaborate)

mytracepp :: (PPrint a) => String -> a -> a
mytracepp = notracepp

askSMT :: Config -> Context -> [(Symbol, Sort)] -> Expr -> IO Bool
askSMT cfg ctx xs e
--   | isContraPred e  = return False
  | isTautoPred  e     = return True
  | null (kvarsExpr e) = checkValidWithContext ctx [] PTrue e'
  | otherwise          = return False
  where
    e' = toSMT "askSMT" cfg ctx xs e

toSMT :: String -> Config -> Context -> [(Symbol, Sort)] -> Expr -> Pred
toSMT msg cfg ctx xs e =
    defuncAny cfg symenv .
        elaborate (dummyLoc msg) (elabEnv xs) .
            mytracepp ("toSMT from " ++ msg ++ showpp e) $
                e
  where
    elabEnv = insertsSymEnv symenv
    symenv  = ctxSymEnv ctx