#include "HsVersions.h"
-import HsSyn ( RuleDecl(..), RuleBndr(..), collectRuleBndrSigTys )
-import CoreSyn ( CoreRule(..) )
-import RnHsSyn ( RenamedRuleDecl )
-import TcHsSyn ( TypecheckedRuleDecl, mkHsLet )
+import HsSyn ( RuleDecl(..), LRuleDecl, RuleBndr(..), collectRuleBndrSigTys, mkHsLet )
import TcRnMonad
import TcSimplify ( tcSimplifyToDicts, tcSimplifyInferCheck )
import TcMType ( newTyVarTy )
-import TcUnify ( Expected(..) )
import TcType ( tyVarsOfTypes, openTypeKind )
-import TcIfaceSig ( tcCoreExpr, tcCoreLamBndrs )
-import TcMonoType ( tcHsSigType, UserTypeCtxt(..), tcAddScopedTyVars )
+import TcHsType ( tcHsSigType, UserTypeCtxt(..), tcAddScopedTyVars )
import TcExpr ( tcCheckRho )
-import TcEnv ( tcExtendLocalValEnv, tcLookupGlobalId, tcLookupId )
+import TcEnv ( tcExtendLocalValEnv )
import Inst ( instToId )
import Id ( idType, mkLocalId )
+import Name ( Name )
+import SrcLoc ( noLoc, unLoc )
import Outputable
\end{code}
\begin{code}
-tcRules :: [RenamedRuleDecl] -> TcM [TypecheckedRuleDecl]
-tcRules decls = mappM tcRule decls
-
-tcRule :: RenamedRuleDecl -> TcM TypecheckedRuleDecl
-tcRule (IfaceRule name act vars fun args rhs src_loc)
- = addSrcLoc src_loc $
- addErrCtxt (ruleCtxt name) $
- tcLookupGlobalId fun `thenM` \ fun' ->
- tcCoreLamBndrs vars $ \ vars' ->
- mappM tcCoreExpr args `thenM` \ args' ->
- tcCoreExpr rhs `thenM` \ rhs' ->
- returnM (IfaceRuleOut fun' (Rule name act vars' args' rhs'))
-
-tcRule (IfaceRuleOut fun rule) -- Built-in rules, and only built-in rules,
- -- come this way. Usually IfaceRuleOut is only
- -- used for the *output* of the type checker
- = tcLookupId fun `thenM` \ fun' ->
- -- NB: tcLookupId, not tcLookupGlobalId
- -- Reason: when compiling GHC.Base, where eqString is defined,
- -- we'll get the builtin rule for eqString, but eqString
- -- will be in the *local* type environment.
- -- Seems like a bit of a hack
- returnM (IfaceRuleOut fun' rule)
-
-tcRule (HsRule name act vars lhs rhs src_loc)
- = addSrcLoc src_loc $
- addErrCtxt (ruleCtxt name) $
- newTyVarTy openTypeKind `thenM` \ rule_ty ->
+tcRules :: [LRuleDecl Name] -> TcM [LRuleDecl TcId]
+tcRules decls = mappM (wrapLocM tcRule) decls
+
+tcRule :: RuleDecl Name -> TcM (RuleDecl TcId)
+tcRule (HsRule name act vars lhs rhs)
+ = addErrCtxt (ruleCtxt name) $
+ traceTc (ptext SLIT("---- Rule ------")
+ <+> ppr name) `thenM_`
+ newTyVarTy openTypeKind `thenM` \ rule_ty ->
-- Deal with the tyvars mentioned in signatures
tcAddScopedTyVars (collectRuleBndrSigTys vars) (
lhs_dicts rhs_lie `thenM` \ (forall_tvs1, rhs_binds) ->
returnM (HsRule name act
- (map RuleBndr (forall_tvs1 ++ tpl_ids)) -- yuk
+ (map (RuleBndr . noLoc) (forall_tvs1 ++ tpl_ids)) -- yuk
(mkHsLet lhs_binds lhs')
- (mkHsLet rhs_binds rhs')
- src_loc)
+ (mkHsLet rhs_binds rhs'))
where
new_id (RuleBndr var) = newTyVarTy openTypeKind `thenM` \ ty ->
- returnM (mkLocalId var ty)
- new_id (RuleBndrSig var rn_ty) = tcHsSigType (RuleSigCtxt var) rn_ty `thenM` \ ty ->
- returnM (mkLocalId var ty)
+ returnM (mkLocalId (unLoc var) ty)
+ new_id (RuleBndrSig var rn_ty) = tcHsSigType (RuleSigCtxt nl_var) rn_ty `thenM` \ ty ->
+ returnM (mkLocalId nl_var ty)
+ where
+ nl_var = unLoc var
ruleCtxt name = ptext SLIT("When checking the transformation rule") <+>
doubleQuotes (ftext name)