Basic set up for global family instance environment

[ghc-hetmet.git] / compiler / typecheck / TcRnMonad.lhs

diff --git a/compiler/typecheck/TcRnMonad.lhs b/compiler/typecheck/TcRnMonad.lhs
index 0b5e4fc..9da9dc9 100644 (file)
--- a/compiler/typecheck/TcRnMonad.lhs
+++ b/compiler/typecheck/TcRnMonad.lhs
@@ -19,6 +19,7 @@ import SrcLoc           ( noSrcLoc  )
 import TysWiredIn       ( intTy, stringTy, mkListTy, unitTy, boolTy )
 import PrelNames        ( breakpointJumpName, breakpointCondJumpName )
 import NameEnv          ( mkNameEnv )
 import TysWiredIn       ( intTy, stringTy, mkListTy, unitTy, boolTy )
 import PrelNames        ( breakpointJumpName, breakpointCondJumpName )
 import NameEnv          ( mkNameEnv )

+import TcEnv            ( tcExtendIdEnv )

 #endif
 
 import HsSyn           ( emptyLHsBinds )
 #endif
 
 import HsSyn           ( emptyLHsBinds )

@@ -34,6 +35,7 @@ import Type           ( Type )
 import TcType          ( tcIsTyVarTy, tcGetTyVar )
 import NameEnv         ( extendNameEnvList, nameEnvElts )
 import InstEnv         ( emptyInstEnv )
 import TcType          ( tcIsTyVarTy, tcGetTyVar )
 import NameEnv         ( extendNameEnvList, nameEnvElts )
 import InstEnv         ( emptyInstEnv )

+import FamInstEnv      ( emptyFamInstEnv )

 
 import Var             ( setTyVarName )
 import VarSet          ( emptyVarSet )
 
 import Var             ( setTyVarName )
 import VarSet          ( emptyVarSet )

@@ -101,6 +103,7 @@ initTc hsc_env hsc_src mod do_this
                tcg_type_env = hsc_global_type_env hsc_env,
                tcg_type_env_var = type_env_var,
                tcg_inst_env  = emptyInstEnv,
                tcg_type_env = hsc_global_type_env hsc_env,
                tcg_type_env_var = type_env_var,
                tcg_inst_env  = emptyInstEnv,

+               tcg_fam_inst_env  = emptyFamInstEnv,

                tcg_inst_uses = dfuns_var,
                tcg_th_used   = th_var,
                tcg_exports  = emptyNameSet,
                tcg_inst_uses = dfuns_var,
                tcg_th_used   = th_var,
                tcg_exports  = emptyNameSet,

@@ -132,33 +135,8 @@ initTc hsc_env hsc_src mod do_this
    
        -- OK, here's the business end!
        maybe_res <- initTcRnIf 'a' hsc_env gbl_env lcl_env $
    
        -- OK, here's the business end!
        maybe_res <- initTcRnIf 'a' hsc_env gbl_env lcl_env $

-                    do {
-#if defined(GHCI) && defined(BREAKPOINT)
-                          unique <- newUnique ;
-                          let { var = mkInternalName unique (mkOccName tvName "a") noSrcLoc;
-                                tyvar = mkTyVar var liftedTypeKind;
-                                basicType extra = (FunTy intTy
-                                                   (FunTy (mkListTy unitTy)
-                                                    (FunTy stringTy
-                                                     (ForAllTy tyvar
-                                                      (extra
-                                                       (FunTy (TyVarTy tyvar)
-                                                        (TyVarTy tyvar)))))));
-                                breakpointJumpType
-                                    = mkGlobalId VanillaGlobal breakpointJumpName
-                                                 (basicType id) vanillaIdInfo;
-                                breakpointCondJumpType
-                                    = mkGlobalId VanillaGlobal breakpointCondJumpName
-                                                 (basicType (FunTy boolTy)) vanillaIdInfo;
-                                new_env = mkNameEnv [(breakpointJumpName
-                                                     , ATcId breakpointJumpType topLevel False)
-                                                     ,(breakpointCondJumpName
-                                                     , ATcId breakpointCondJumpType topLevel False)];
-                              };
-                          r <- tryM (updLclEnv (\gbl -> gbl{tcl_env=new_env}) do_this)
-#else
-                          r <- tryM do_this
-#endif
+                    addBreakpointBindings $
+                    do { r <- tryM do_this

                        ; case r of
                          Right res -> return (Just res)
                          Left _    -> return Nothing } ;
                        ; case r of
                          Right res -> return (Just res)
                          Left _    -> return Nothing } ;

@@ -191,6 +169,32 @@ initTcPrintErrors env mod todo = do
   return res
 \end{code}
 
   return res
 \end{code}
 

+\begin{code}
+addBreakpointBindings :: TcM a -> TcM a
+addBreakpointBindings thing_inside
+#if defined(GHCI) && defined(BREAKPOINT)
+  = do { unique <- newUnique
+        ; let { var = mkInternalName unique (mkOccName tvName "a") noSrcLoc;
+                tyvar = mkTyVar var liftedTypeKind;
+                basicType extra = (FunTy intTy
+                                   (FunTy (mkListTy unitTy)
+                                    (FunTy stringTy
+                                     (ForAllTy tyvar
+                                      (extra
+                                       (FunTy (TyVarTy tyvar)
+                                        (TyVarTy tyvar)))))));
+                breakpointJumpId
+                    = mkGlobalId VanillaGlobal breakpointJumpName
+                                 (basicType id) vanillaIdInfo;
+                breakpointCondJumpId
+                    = mkGlobalId VanillaGlobal breakpointCondJumpName
+                                 (basicType (FunTy boolTy)) vanillaIdInfo
+         }
+       ; tcExtendIdEnv [breakpointJumpId, breakpointCondJumpId] thing_inside}
+#else
+   = thing_inside
+#endif
+\end{code}

 
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