forked from OSchip/llvm-project
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//= ObjCNoReturn.cpp - Handling of Cocoa APIs known not to return --*- C++ -*---
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements special handling of recognizing ObjC API hooks that
|
|
// do not return but aren't marked as such in API headers.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "clang/AST/ASTContext.h"
|
|
#include "clang/AST/ExprObjC.h"
|
|
#include "clang/Analysis/DomainSpecific/ObjCNoReturn.h"
|
|
|
|
using namespace clang;
|
|
|
|
static bool isSubclass(const ObjCInterfaceDecl *Class, IdentifierInfo *II) {
|
|
if (!Class)
|
|
return false;
|
|
if (Class->getIdentifier() == II)
|
|
return true;
|
|
return isSubclass(Class->getSuperClass(), II);
|
|
}
|
|
|
|
ObjCNoReturn::ObjCNoReturn(ASTContext &C)
|
|
: RaiseSel(GetNullarySelector("raise", C)),
|
|
NSExceptionII(&C.Idents.get("NSException"))
|
|
{
|
|
// Generate selectors.
|
|
SmallVector<IdentifierInfo*, 3> II;
|
|
|
|
// raise:format:
|
|
II.push_back(&C.Idents.get("raise"));
|
|
II.push_back(&C.Idents.get("format"));
|
|
NSExceptionInstanceRaiseSelectors[0] =
|
|
C.Selectors.getSelector(II.size(), &II[0]);
|
|
|
|
// raise:format:arguments:
|
|
II.push_back(&C.Idents.get("arguments"));
|
|
NSExceptionInstanceRaiseSelectors[1] =
|
|
C.Selectors.getSelector(II.size(), &II[0]);
|
|
}
|
|
|
|
|
|
bool ObjCNoReturn::isImplicitNoReturn(const ObjCMessageExpr *ME) {
|
|
Selector S = ME->getSelector();
|
|
|
|
if (ME->isInstanceMessage()) {
|
|
// Check for the "raise" message.
|
|
return S == RaiseSel;
|
|
}
|
|
|
|
if (const ObjCInterfaceDecl *ID = ME->getReceiverInterface()) {
|
|
if (isSubclass(ID, NSExceptionII)) {
|
|
for (unsigned i = 0; i < NUM_RAISE_SELECTORS; ++i) {
|
|
if (S == NSExceptionInstanceRaiseSelectors[i])
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|