1f51a89d39
These were ignored by git accidentally. We want ALL OF THEM since they all came in the llvm/clang source distribution.
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
//===--- TransARCAssign.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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// makeAssignARCSafe:
|
|
//
|
|
// Add '__strong' where appropriate.
|
|
//
|
|
// for (id x in collection) {
|
|
// x = 0;
|
|
// }
|
|
// ---->
|
|
// for (__strong id x in collection) {
|
|
// x = 0;
|
|
// }
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Transforms.h"
|
|
#include "Internals.h"
|
|
#include "clang/Sema/SemaDiagnostic.h"
|
|
|
|
using namespace clang;
|
|
using namespace arcmt;
|
|
using namespace trans;
|
|
|
|
namespace {
|
|
|
|
class ARCAssignChecker : public RecursiveASTVisitor<ARCAssignChecker> {
|
|
MigrationPass &Pass;
|
|
llvm::DenseSet<VarDecl *> ModifiedVars;
|
|
|
|
public:
|
|
ARCAssignChecker(MigrationPass &pass) : Pass(pass) { }
|
|
|
|
bool VisitBinaryOperator(BinaryOperator *Exp) {
|
|
if (Exp->getType()->isDependentType())
|
|
return true;
|
|
|
|
Expr *E = Exp->getLHS();
|
|
SourceLocation OrigLoc = E->getExprLoc();
|
|
SourceLocation Loc = OrigLoc;
|
|
DeclRefExpr *declRef = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts());
|
|
if (declRef && isa<VarDecl>(declRef->getDecl())) {
|
|
ASTContext &Ctx = Pass.Ctx;
|
|
Expr::isModifiableLvalueResult IsLV = E->isModifiableLvalue(Ctx, &Loc);
|
|
if (IsLV != Expr::MLV_ConstQualified)
|
|
return true;
|
|
VarDecl *var = cast<VarDecl>(declRef->getDecl());
|
|
if (var->isARCPseudoStrong()) {
|
|
Transaction Trans(Pass.TA);
|
|
if (Pass.TA.clearDiagnostic(diag::err_typecheck_arr_assign_enumeration,
|
|
Exp->getOperatorLoc())) {
|
|
if (!ModifiedVars.count(var)) {
|
|
TypeLoc TLoc = var->getTypeSourceInfo()->getTypeLoc();
|
|
Pass.TA.insert(TLoc.getBeginLoc(), "__strong ");
|
|
ModifiedVars.insert(var);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
};
|
|
|
|
} // anonymous namespace
|
|
|
|
void trans::makeAssignARCSafe(MigrationPass &pass) {
|
|
ARCAssignChecker assignCheck(pass);
|
|
assignCheck.TraverseDecl(pass.Ctx.getTranslationUnitDecl());
|
|
}
|