import TcSimplify ( tcSimplifyToDicts, tcSimplifyInferCheck )
import TcMType ( newTyVarTy )
import TcType ( tyVarsOfTypes, openTypeKind )
-import TcIfaceSig ( tcCoreExpr, tcCoreLamBndrs, tcVar )
+import TcIfaceSig ( tcCoreExpr, tcCoreLamBndrs, tcVar, tcDelay )
import TcMonoType ( kcHsSigTypes, tcHsSigType, UserTypeCtxt(..), tcScopedTyVars )
import TcExpr ( tcExpr )
-import TcEnv ( tcExtendLocalValEnv, isLocalThing )
+import TcEnv ( RecTcEnv, tcExtendLocalValEnv, isLocalThing )
import Rules ( extendRuleBase )
import Inst ( LIE, plusLIEs, instToId )
import Id ( idName, idType, mkLocalId )
\end{code}
\begin{code}
-tcIfaceRules :: PackageRuleBase -> Module -> [RenamedRuleDecl]
+tcIfaceRules :: RecTcEnv -> PackageRuleBase -> Module -> [RenamedRuleDecl]
-> TcM (PackageRuleBase, [TypecheckedRuleDecl])
-tcIfaceRules pkg_rule_base mod decls
- = mapTc tcIfaceRule decls `thenTc` \ new_rules ->
+tcIfaceRules unf_env pkg_rule_base mod decls
+ = tcDelay unf_env doc [] (
+ -- We need the recursive env because the built-in rules show up as
+ -- IfaceOut rules, sot they get typechecked by tcIfaceRules
+ mapTc tcIfaceRule decls
+ ) `thenTc` \ new_rules ->
let
(local_rules, imported_rules) = partition is_local new_rules
new_rule_base = foldl add pkg_rule_base imported_rules
in
returnTc (new_rule_base, local_rules)
where
+ doc = text "tcIfaceRules"
add rule_base (IfaceRuleOut id rule) = extendRuleBase rule_base (id, rule)
-- When relinking this module from its interface-file decls
tcIfaceRule :: RenamedRuleDecl -> TcM TypecheckedRuleDecl
-- No zonking necessary!
-tcIfaceRule rule@(IfaceRule name vars fun args rhs src_loc)
+tcIfaceRule (IfaceRule name act vars fun args rhs src_loc)
= tcAddSrcLoc src_loc $
tcAddErrCtxt (ruleCtxt name) $
tcVar fun `thenTc` \ fun' ->
tcCoreLamBndrs vars $ \ vars' ->
mapTc tcCoreExpr args `thenTc` \ args' ->
tcCoreExpr rhs `thenTc` \ rhs' ->
- let
- new_rule :: TypecheckedRuleDecl
- new_rule = IfaceRuleOut fun' (Rule name vars' args' rhs')
- in
- returnTc new_rule
+ returnTc (IfaceRuleOut fun' (Rule name act vars' args' rhs'))
+
+tcIfaceRule (IfaceRuleOut fun rule) -- Built-in rules come this way
+ = tcVar fun `thenTc` \ fun' ->
+ returnTc (IfaceRuleOut fun' rule)
tcSourceRules :: [RenamedRuleDecl] -> TcM (LIE, [TypecheckedRuleDecl])
tcSourceRules decls
= mapAndUnzipTc tcSourceRule decls `thenTc` \ (lies, decls') ->
returnTc (plusLIEs lies, decls')
-tcSourceRule (HsRule name sig_tvs vars lhs rhs src_loc)
+tcSourceRule (HsRule name act sig_tvs vars lhs rhs src_loc)
= tcAddSrcLoc src_loc $
tcAddErrCtxt (ruleCtxt name) $
newTyVarTy openTypeKind `thenNF_Tc` \ rule_ty ->
forall_tvs
lhs_dicts rhs_lie `thenTc` \ (forall_tvs1, lie', rhs_binds) ->
- returnTc (lie', HsRule name forall_tvs1
+ returnTc (lie', HsRule name act forall_tvs1
(map RuleBndr tpl_ids) -- yuk
(mkHsLet lhs_binds lhs')
(mkHsLet rhs_binds rhs')
where
sig_tys = [t | RuleBndrSig _ t <- vars]
- new_id (RuleBndr var) = newTyVarTy openTypeKind `thenNF_Tc` \ ty ->
+ new_id (RuleBndr var) = newTyVarTy openTypeKind `thenNF_Tc` \ ty ->
returnNF_Tc (mkLocalId var ty)
- new_id (RuleBndrSig var rn_ty) = tcHsSigType PatSigCtxt rn_ty `thenTc` \ ty ->
+ new_id (RuleBndrSig var rn_ty) = tcHsSigType (RuleSigCtxt var) rn_ty `thenTc` \ ty ->
returnNF_Tc (mkLocalId var ty)
ruleCtxt name = ptext SLIT("When checking the transformation rule") <+>