6122f3e60d
branch. This brings us very close to the 3.0 release, which is expected in a week or two. MFC after: 1 week
110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
//===--- TransAPIUses.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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// checkAPIUses:
|
|
//
|
|
// Emits error/fix with some API uses that are obsolete or not safe in ARC mode:
|
|
//
|
|
// - NSInvocation's [get/set]ReturnValue and [get/set]Argument are only safe
|
|
// with __unsafe_unretained objects.
|
|
// - Calling -zone gets replaced with 'nil'.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Transforms.h"
|
|
#include "Internals.h"
|
|
#include "clang/Sema/SemaDiagnostic.h"
|
|
|
|
using namespace clang;
|
|
using namespace arcmt;
|
|
using namespace trans;
|
|
|
|
namespace {
|
|
|
|
class APIChecker : public RecursiveASTVisitor<APIChecker> {
|
|
MigrationPass &Pass;
|
|
|
|
Selector getReturnValueSel, setReturnValueSel;
|
|
Selector getArgumentSel, setArgumentSel;
|
|
|
|
Selector zoneSel;
|
|
public:
|
|
APIChecker(MigrationPass &pass) : Pass(pass) {
|
|
SelectorTable &sels = Pass.Ctx.Selectors;
|
|
IdentifierTable &ids = Pass.Ctx.Idents;
|
|
getReturnValueSel = sels.getUnarySelector(&ids.get("getReturnValue"));
|
|
setReturnValueSel = sels.getUnarySelector(&ids.get("setReturnValue"));
|
|
|
|
IdentifierInfo *selIds[2];
|
|
selIds[0] = &ids.get("getArgument");
|
|
selIds[1] = &ids.get("atIndex");
|
|
getArgumentSel = sels.getSelector(2, selIds);
|
|
selIds[0] = &ids.get("setArgument");
|
|
setArgumentSel = sels.getSelector(2, selIds);
|
|
|
|
zoneSel = sels.getNullarySelector(&ids.get("zone"));
|
|
}
|
|
|
|
bool VisitObjCMessageExpr(ObjCMessageExpr *E) {
|
|
// NSInvocation.
|
|
if (E->isInstanceMessage() &&
|
|
E->getReceiverInterface() &&
|
|
E->getReceiverInterface()->getName() == "NSInvocation") {
|
|
StringRef selName;
|
|
if (E->getSelector() == getReturnValueSel)
|
|
selName = "getReturnValue";
|
|
else if (E->getSelector() == setReturnValueSel)
|
|
selName = "setReturnValue";
|
|
else if (E->getSelector() == getArgumentSel)
|
|
selName = "getArgument";
|
|
else if (E->getSelector() == setArgumentSel)
|
|
selName = "setArgument";
|
|
|
|
if (selName.empty())
|
|
return true;
|
|
|
|
Expr *parm = E->getArg(0)->IgnoreParenCasts();
|
|
QualType pointee = parm->getType()->getPointeeType();
|
|
if (pointee.isNull())
|
|
return true;
|
|
|
|
if (pointee.getObjCLifetime() > Qualifiers::OCL_ExplicitNone) {
|
|
std::string err = "NSInvocation's ";
|
|
err += selName;
|
|
err += " is not safe to be used with an object with ownership other "
|
|
"than __unsafe_unretained";
|
|
Pass.TA.reportError(err, parm->getLocStart(), parm->getSourceRange());
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// -zone.
|
|
if (E->isInstanceMessage() &&
|
|
E->getInstanceReceiver() &&
|
|
E->getSelector() == zoneSel &&
|
|
Pass.TA.hasDiagnostic(diag::err_unavailable,
|
|
diag::err_unavailable_message,
|
|
E->getInstanceReceiver()->getExprLoc())) {
|
|
// Calling -zone is meaningless in ARC, change it to nil.
|
|
Transaction Trans(Pass.TA);
|
|
Pass.TA.clearDiagnostic(diag::err_unavailable,
|
|
diag::err_unavailable_message,
|
|
E->getInstanceReceiver()->getExprLoc());
|
|
Pass.TA.replace(E->getSourceRange(), getNilString(Pass.Ctx));
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
} // anonymous namespace
|
|
|
|
void trans::checkAPIUses(MigrationPass &pass) {
|
|
APIChecker(pass).TraverseDecl(pass.Ctx.getTranslationUnitDecl());
|
|
}
|