Sema: Replace some getGenericParamsOfContext() calls with isGenericContext()

Author: slavapestov

lib/AST/Mangle.cpp

@@ -1109,7 +1109,7 @@ void Mangler::mangleType(Type type, unsigned uncurryLevel) {
         SmallVector<const void *, 4> SortedSubsts(Substitutions.size());
         for (auto S : Substitutions) SortedSubsts[S.second] = S.first;
         for (auto S : SortedSubsts) ContextMangler.addSubstitution(S);
-        while (DC && DC->getGenericParamsOfContext()) {
+        while (DC && DC->isGenericContext()) {
           if (DC->isInnermostContextGeneric() &&
               DC->getGenericParamsOfContext()->getDepth() == GTPT->getDepth())
             break;

lib/Sema/CSDiag.cpp

@@ -1202,7 +1202,7 @@ static bool findGenericSubstitutions(DeclContext *dc, Type paramType,
 
     bool mismatch(SubstitutableType *paramType, TypeBase *argType) {
       Type type = paramType;
-      if (dc && dc->getGenericParamsOfContext() && type->isTypeParameter())
+      if (dc && dc->isGenericContext() && type->isTypeParameter())
         type = ArchetypeBuilder::mapTypeIntoContext(dc, paramType);
 
       if (auto archetype = type->getAs<ArchetypeType>()) {
@@ -1339,7 +1339,7 @@ CalleeCandidateInfo::evaluateCloseness(DeclContext *dc, Type candArgListType,
         matchType.findIf([&](Type type) -> bool {
           if (auto substitution = dyn_cast<SubstitutedType>(type.getPointer())) {
             Type original = substitution->getOriginal();
-            if (dc && dc->getGenericParamsOfContext() && original->isTypeParameter())
+            if (dc && dc->isGenericContext() && original->isTypeParameter())
               original = ArchetypeBuilder::mapTypeIntoContext(dc, original);
 
             Type replacement = substitution->getReplacementType();

lib/Sema/TypeChecker.cpp

@@ -366,7 +366,7 @@ static void bindExtensionDecl(ExtensionDecl *ED, TypeChecker &TC) {
 
   // If the extended type is generic or is a protocol. Clone or create
   // the generic parameters.
-  if (extendedNominal->getGenericParamsOfContext()) {
+  if (extendedNominal->isGenericContext()) {
     if (auto proto = dyn_cast<ProtocolDecl>(extendedNominal)) {
       // For a protocol extension, build the generic parameter list.
       ED->setGenericParams(proto->createGenericParams(ED));
@@ -381,7 +381,7 @@ static void bindExtensionDecl(ExtensionDecl *ED, TypeChecker &TC) {
   // If we have a trailing where clause, deal with it now.
   // For now, trailing where clauses are only permitted on protocol extensions.
   if (auto trailingWhereClause = ED->getTrailingWhereClause()) {
-    if (!extendedNominal->getGenericParamsOfContext()) {
+    if (!extendedNominal->isGenericContext()) {
       // Only generic and protocol types are permitted to have
       // trailing where clauses.
       TC.diagnose(ED, diag::extension_nongeneric_trailing_where, extendedType)