[arcmt] In GC, transform NSMakeCollectable to CFBridgingRelease.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143698 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ARCMigrate/TransGCCalls.cpp b/lib/ARCMigrate/TransGCCalls.cpp
new file mode 100644
index 0000000..71dc6dc
--- /dev/null
+++ b/lib/ARCMigrate/TransGCCalls.cpp
@@ -0,0 +1,59 @@
+//===--- TransGCCalls.cpp - Tranformations to ARC mode --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Transforms.h"
+#include "Internals.h"
+#include "clang/Sema/SemaDiagnostic.h"
+
+using namespace clang;
+using namespace arcmt;
+using namespace trans;
+
+namespace {
+
+class GCCollectableCallsChecker :
+ public RecursiveASTVisitor<GCCollectableCallsChecker> {
+ MigrationContext &MigrateCtx;
+ ParentMap &PMap;
+ IdentifierInfo *NSMakeCollectableII;
+
+public:
+ GCCollectableCallsChecker(MigrationContext &ctx, ParentMap &map)
+ : MigrateCtx(ctx), PMap(map) {
+ NSMakeCollectableII =
+ &MigrateCtx.getPass().Ctx.Idents.get("NSMakeCollectable");
+ }
+
+ bool VisitCallExpr(CallExpr *E) {
+ Expr *CEE = E->getCallee()->IgnoreParenImpCasts();
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE)) {
+ if (FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(DRE->getDecl())) {
+ if (FD->getDeclContext()->getRedeclContext()->isFileContext() &&
+ FD->getIdentifier() == NSMakeCollectableII) {
+ TransformActions &TA = MigrateCtx.getPass().TA;
+ Transaction Trans(TA);
+ TA.clearDiagnostic(diag::err_unavailable,
+ diag::err_unavailable_message,
+ DRE->getSourceRange());
+ TA.replace(DRE->getSourceRange(), "CFBridgingRelease");
+ }
+ }
+ }
+
+ return true;
+ }
+};
+
+} // anonymous namespace
+
+void GCCollectableCallsTraverser::traverseBody(BodyContext &BodyCtx) {
+ GCCollectableCallsChecker(BodyCtx.getMigrationContext(),
+ BodyCtx.getParentMap())
+ .TraverseStmt(BodyCtx.getTopStmt());
+}