366 lines
14 KiB
C++
366 lines
14 KiB
C++
|
//===- ExprObjC.cpp - (ObjC) Expression AST Node Implementation -----------===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This file implements the subclesses of Expr class declared in ExprObjC.h
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "clang/AST/ExprObjC.h"
|
||
|
|
#include "clang/AST/ASTContext.h"
|
||
|
|
#include "clang/AST/ComputeDependence.h"
|
||
|
|
#include "clang/AST/DependenceFlags.h"
|
||
|
|
#include "clang/AST/SelectorLocationsKind.h"
|
||
|
|
#include "clang/AST/Type.h"
|
||
|
|
#include "clang/AST/TypeLoc.h"
|
||
|
|
#include "llvm/ADT/SmallVector.h"
|
||
|
|
#include "llvm/Support/ErrorHandling.h"
|
||
|
|
#include <algorithm>
|
||
|
|
#include <cassert>
|
||
|
|
#include <cstdint>
|
||
|
|
|
||
|
|
using namespace clang;
|
||
|
|
|
||
|
|
ObjCArrayLiteral::ObjCArrayLiteral(ArrayRef<Expr *> Elements, QualType T,
|
||
|
|
ObjCMethodDecl *Method, SourceRange SR)
|
||
|
|
: Expr(ObjCArrayLiteralClass, T, VK_RValue, OK_Ordinary),
|
||
|
|
NumElements(Elements.size()), Range(SR), ArrayWithObjectsMethod(Method) {
|
||
|
|
Expr **SaveElements = getElements();
|
||
|
|
for (unsigned I = 0, N = Elements.size(); I != N; ++I)
|
||
|
|
SaveElements[I] = Elements[I];
|
||
|
|
|
||
|
|
setDependence(computeDependence(this));
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCArrayLiteral *ObjCArrayLiteral::Create(const ASTContext &C,
|
||
|
|
ArrayRef<Expr *> Elements,
|
||
|
|
QualType T, ObjCMethodDecl *Method,
|
||
|
|
SourceRange SR) {
|
||
|
|
void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Elements.size()));
|
||
|
|
return new (Mem) ObjCArrayLiteral(Elements, T, Method, SR);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCArrayLiteral *ObjCArrayLiteral::CreateEmpty(const ASTContext &C,
|
||
|
|
unsigned NumElements) {
|
||
|
|
void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumElements));
|
||
|
|
return new (Mem) ObjCArrayLiteral(EmptyShell(), NumElements);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCDictionaryLiteral::ObjCDictionaryLiteral(ArrayRef<ObjCDictionaryElement> VK,
|
||
|
|
bool HasPackExpansions, QualType T,
|
||
|
|
ObjCMethodDecl *method,
|
||
|
|
SourceRange SR)
|
||
|
|
: Expr(ObjCDictionaryLiteralClass, T, VK_RValue, OK_Ordinary),
|
||
|
|
NumElements(VK.size()), HasPackExpansions(HasPackExpansions), Range(SR),
|
||
|
|
DictWithObjectsMethod(method) {
|
||
|
|
KeyValuePair *KeyValues = getTrailingObjects<KeyValuePair>();
|
||
|
|
ExpansionData *Expansions =
|
||
|
|
HasPackExpansions ? getTrailingObjects<ExpansionData>() : nullptr;
|
||
|
|
for (unsigned I = 0; I < NumElements; I++) {
|
||
|
|
KeyValues[I].Key = VK[I].Key;
|
||
|
|
KeyValues[I].Value = VK[I].Value;
|
||
|
|
if (Expansions) {
|
||
|
|
Expansions[I].EllipsisLoc = VK[I].EllipsisLoc;
|
||
|
|
if (VK[I].NumExpansions)
|
||
|
|
Expansions[I].NumExpansionsPlusOne = *VK[I].NumExpansions + 1;
|
||
|
|
else
|
||
|
|
Expansions[I].NumExpansionsPlusOne = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
setDependence(computeDependence(this));
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCDictionaryLiteral *
|
||
|
|
ObjCDictionaryLiteral::Create(const ASTContext &C,
|
||
|
|
ArrayRef<ObjCDictionaryElement> VK,
|
||
|
|
bool HasPackExpansions, QualType T,
|
||
|
|
ObjCMethodDecl *method, SourceRange SR) {
|
||
|
|
void *Mem = C.Allocate(totalSizeToAlloc<KeyValuePair, ExpansionData>(
|
||
|
|
VK.size(), HasPackExpansions ? VK.size() : 0));
|
||
|
|
return new (Mem) ObjCDictionaryLiteral(VK, HasPackExpansions, T, method, SR);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCDictionaryLiteral *
|
||
|
|
ObjCDictionaryLiteral::CreateEmpty(const ASTContext &C, unsigned NumElements,
|
||
|
|
bool HasPackExpansions) {
|
||
|
|
void *Mem = C.Allocate(totalSizeToAlloc<KeyValuePair, ExpansionData>(
|
||
|
|
NumElements, HasPackExpansions ? NumElements : 0));
|
||
|
|
return new (Mem)
|
||
|
|
ObjCDictionaryLiteral(EmptyShell(), NumElements, HasPackExpansions);
|
||
|
|
}
|
||
|
|
|
||
|
|
QualType ObjCPropertyRefExpr::getReceiverType(const ASTContext &ctx) const {
|
||
|
|
if (isClassReceiver())
|
||
|
|
return ctx.getObjCInterfaceType(getClassReceiver());
|
||
|
|
|
||
|
|
if (isSuperReceiver())
|
||
|
|
return getSuperReceiverType();
|
||
|
|
|
||
|
|
return getBase()->getType();
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc,
|
||
|
|
SourceLocation SuperLoc, bool IsInstanceSuper,
|
||
|
|
QualType SuperType, Selector Sel,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
SelectorLocationsKind SelLocsK,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit)
|
||
|
|
: Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
|
||
|
|
SelectorOrMethod(
|
||
|
|
reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
|
||
|
|
Kind(IsInstanceSuper ? SuperInstance : SuperClass),
|
||
|
|
HasMethod(Method != nullptr), IsDelegateInitCall(false),
|
||
|
|
IsImplicit(isImplicit), SuperLoc(SuperLoc), LBracLoc(LBracLoc),
|
||
|
|
RBracLoc(RBracLoc) {
|
||
|
|
initArgsAndSelLocs(Args, SelLocs, SelLocsK);
|
||
|
|
setReceiverPointer(SuperType.getAsOpaquePtr());
|
||
|
|
setDependence(computeDependence(this));
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc,
|
||
|
|
TypeSourceInfo *Receiver, Selector Sel,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
SelectorLocationsKind SelLocsK,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit)
|
||
|
|
: Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
|
||
|
|
SelectorOrMethod(
|
||
|
|
reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
|
||
|
|
Kind(Class), HasMethod(Method != nullptr), IsDelegateInitCall(false),
|
||
|
|
IsImplicit(isImplicit), LBracLoc(LBracLoc), RBracLoc(RBracLoc) {
|
||
|
|
initArgsAndSelLocs(Args, SelLocs, SelLocsK);
|
||
|
|
setReceiverPointer(Receiver);
|
||
|
|
setDependence(computeDependence(this));
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc, Expr *Receiver,
|
||
|
|
Selector Sel, ArrayRef<SourceLocation> SelLocs,
|
||
|
|
SelectorLocationsKind SelLocsK,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit)
|
||
|
|
: Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
|
||
|
|
SelectorOrMethod(
|
||
|
|
reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
|
||
|
|
Kind(Instance), HasMethod(Method != nullptr), IsDelegateInitCall(false),
|
||
|
|
IsImplicit(isImplicit), LBracLoc(LBracLoc), RBracLoc(RBracLoc) {
|
||
|
|
initArgsAndSelLocs(Args, SelLocs, SelLocsK);
|
||
|
|
setReceiverPointer(Receiver);
|
||
|
|
setDependence(computeDependence(this));
|
||
|
|
}
|
||
|
|
|
||
|
|
void ObjCMessageExpr::initArgsAndSelLocs(ArrayRef<Expr *> Args,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
SelectorLocationsKind SelLocsK) {
|
||
|
|
setNumArgs(Args.size());
|
||
|
|
Expr **MyArgs = getArgs();
|
||
|
|
for (unsigned I = 0; I != Args.size(); ++I)
|
||
|
|
MyArgs[I] = Args[I];
|
||
|
|
|
||
|
|
SelLocsKind = SelLocsK;
|
||
|
|
if (!isImplicit()) {
|
||
|
|
if (SelLocsK == SelLoc_NonStandard)
|
||
|
|
std::copy(SelLocs.begin(), SelLocs.end(), getStoredSelLocs());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *
|
||
|
|
ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc, SourceLocation SuperLoc,
|
||
|
|
bool IsInstanceSuper, QualType SuperType, Selector Sel,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit) {
|
||
|
|
assert((!SelLocs.empty() || isImplicit) &&
|
||
|
|
"No selector locs for non-implicit message");
|
||
|
|
ObjCMessageExpr *Mem;
|
||
|
|
SelectorLocationsKind SelLocsK = SelectorLocationsKind();
|
||
|
|
if (isImplicit)
|
||
|
|
Mem = alloc(Context, Args.size(), 0);
|
||
|
|
else
|
||
|
|
Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
|
||
|
|
return new (Mem) ObjCMessageExpr(T, VK, LBracLoc, SuperLoc, IsInstanceSuper,
|
||
|
|
SuperType, Sel, SelLocs, SelLocsK, Method,
|
||
|
|
Args, RBracLoc, isImplicit);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *
|
||
|
|
ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc, TypeSourceInfo *Receiver,
|
||
|
|
Selector Sel, ArrayRef<SourceLocation> SelLocs,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit) {
|
||
|
|
assert((!SelLocs.empty() || isImplicit) &&
|
||
|
|
"No selector locs for non-implicit message");
|
||
|
|
ObjCMessageExpr *Mem;
|
||
|
|
SelectorLocationsKind SelLocsK = SelectorLocationsKind();
|
||
|
|
if (isImplicit)
|
||
|
|
Mem = alloc(Context, Args.size(), 0);
|
||
|
|
else
|
||
|
|
Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
|
||
|
|
return new (Mem)
|
||
|
|
ObjCMessageExpr(T, VK, LBracLoc, Receiver, Sel, SelLocs, SelLocsK, Method,
|
||
|
|
Args, RBracLoc, isImplicit);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *
|
||
|
|
ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
|
||
|
|
SourceLocation LBracLoc, Expr *Receiver, Selector Sel,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBracLoc, bool isImplicit) {
|
||
|
|
assert((!SelLocs.empty() || isImplicit) &&
|
||
|
|
"No selector locs for non-implicit message");
|
||
|
|
ObjCMessageExpr *Mem;
|
||
|
|
SelectorLocationsKind SelLocsK = SelectorLocationsKind();
|
||
|
|
if (isImplicit)
|
||
|
|
Mem = alloc(Context, Args.size(), 0);
|
||
|
|
else
|
||
|
|
Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
|
||
|
|
return new (Mem)
|
||
|
|
ObjCMessageExpr(T, VK, LBracLoc, Receiver, Sel, SelLocs, SelLocsK, Method,
|
||
|
|
Args, RBracLoc, isImplicit);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *ObjCMessageExpr::CreateEmpty(const ASTContext &Context,
|
||
|
|
unsigned NumArgs,
|
||
|
|
unsigned NumStoredSelLocs) {
|
||
|
|
ObjCMessageExpr *Mem = alloc(Context, NumArgs, NumStoredSelLocs);
|
||
|
|
return new (Mem) ObjCMessageExpr(EmptyShell(), NumArgs);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *ObjCMessageExpr::alloc(const ASTContext &C,
|
||
|
|
ArrayRef<Expr *> Args,
|
||
|
|
SourceLocation RBraceLoc,
|
||
|
|
ArrayRef<SourceLocation> SelLocs,
|
||
|
|
Selector Sel,
|
||
|
|
SelectorLocationsKind &SelLocsK) {
|
||
|
|
SelLocsK = hasStandardSelectorLocs(Sel, SelLocs, Args, RBraceLoc);
|
||
|
|
unsigned NumStoredSelLocs =
|
||
|
|
(SelLocsK == SelLoc_NonStandard) ? SelLocs.size() : 0;
|
||
|
|
return alloc(C, Args.size(), NumStoredSelLocs);
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCMessageExpr *ObjCMessageExpr::alloc(const ASTContext &C, unsigned NumArgs,
|
||
|
|
unsigned NumStoredSelLocs) {
|
||
|
|
return (ObjCMessageExpr *)C.Allocate(
|
||
|
|
totalSizeToAlloc<void *, SourceLocation>(NumArgs + 1, NumStoredSelLocs),
|
||
|
|
alignof(ObjCMessageExpr));
|
||
|
|
}
|
||
|
|
|
||
|
|
void ObjCMessageExpr::getSelectorLocs(
|
||
|
|
SmallVectorImpl<SourceLocation> &SelLocs) const {
|
||
|
|
for (unsigned i = 0, e = getNumSelectorLocs(); i != e; ++i)
|
||
|
|
SelLocs.push_back(getSelectorLoc(i));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
QualType ObjCMessageExpr::getCallReturnType(ASTContext &Ctx) const {
|
||
|
|
if (const ObjCMethodDecl *MD = getMethodDecl()) {
|
||
|
|
QualType QT = MD->getReturnType();
|
||
|
|
if (QT == Ctx.getObjCInstanceType()) {
|
||
|
|
// instancetype corresponds to expression types.
|
||
|
|
return getType();
|
||
|
|
}
|
||
|
|
return QT;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Expression type might be different from an expected call return type,
|
||
|
|
// as expression type would never be a reference even if call returns a
|
||
|
|
// reference. Reconstruct the original expression type.
|
||
|
|
QualType QT = getType();
|
||
|
|
switch (getValueKind()) {
|
||
|
|
case VK_LValue:
|
||
|
|
return Ctx.getLValueReferenceType(QT);
|
||
|
|
case VK_XValue:
|
||
|
|
return Ctx.getRValueReferenceType(QT);
|
||
|
|
case VK_RValue:
|
||
|
|
return QT;
|
||
|
|
}
|
||
|
|
llvm_unreachable("Unsupported ExprValueKind");
|
||
|
|
}
|
||
|
|
|
||
|
|
SourceRange ObjCMessageExpr::getReceiverRange() const {
|
||
|
|
switch (getReceiverKind()) {
|
||
|
|
case Instance:
|
||
|
|
return getInstanceReceiver()->getSourceRange();
|
||
|
|
|
||
|
|
case Class:
|
||
|
|
return getClassReceiverTypeInfo()->getTypeLoc().getSourceRange();
|
||
|
|
|
||
|
|
case SuperInstance:
|
||
|
|
case SuperClass:
|
||
|
|
return getSuperLoc();
|
||
|
|
}
|
||
|
|
|
||
|
|
llvm_unreachable("Invalid ReceiverKind!");
|
||
|
|
}
|
||
|
|
|
||
|
|
Selector ObjCMessageExpr::getSelector() const {
|
||
|
|
if (HasMethod)
|
||
|
|
return reinterpret_cast<const ObjCMethodDecl *>(SelectorOrMethod)
|
||
|
|
->getSelector();
|
||
|
|
return Selector(SelectorOrMethod);
|
||
|
|
}
|
||
|
|
|
||
|
|
QualType ObjCMessageExpr::getReceiverType() const {
|
||
|
|
switch (getReceiverKind()) {
|
||
|
|
case Instance:
|
||
|
|
return getInstanceReceiver()->getType();
|
||
|
|
case Class:
|
||
|
|
return getClassReceiver();
|
||
|
|
case SuperInstance:
|
||
|
|
case SuperClass:
|
||
|
|
return getSuperType();
|
||
|
|
}
|
||
|
|
|
||
|
|
llvm_unreachable("unexpected receiver kind");
|
||
|
|
}
|
||
|
|
|
||
|
|
ObjCInterfaceDecl *ObjCMessageExpr::getReceiverInterface() const {
|
||
|
|
QualType T = getReceiverType();
|
||
|
|
|
||
|
|
if (const ObjCObjectPointerType *Ptr = T->getAs<ObjCObjectPointerType>())
|
||
|
|
return Ptr->getInterfaceDecl();
|
||
|
|
|
||
|
|
if (const ObjCObjectType *Ty = T->getAs<ObjCObjectType>())
|
||
|
|
return Ty->getInterface();
|
||
|
|
|
||
|
|
return nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
Stmt::child_range ObjCMessageExpr::children() {
|
||
|
|
Stmt **begin;
|
||
|
|
if (getReceiverKind() == Instance)
|
||
|
|
begin = reinterpret_cast<Stmt **>(getTrailingObjects<void *>());
|
||
|
|
else
|
||
|
|
begin = reinterpret_cast<Stmt **>(getArgs());
|
||
|
|
return child_range(begin,
|
||
|
|
reinterpret_cast<Stmt **>(getArgs() + getNumArgs()));
|
||
|
|
}
|
||
|
|
|
||
|
|
Stmt::const_child_range ObjCMessageExpr::children() const {
|
||
|
|
auto Children = const_cast<ObjCMessageExpr *>(this)->children();
|
||
|
|
return const_child_range(Children.begin(), Children.end());
|
||
|
|
}
|
||
|
|
|
||
|
|
StringRef ObjCBridgedCastExpr::getBridgeKindName() const {
|
||
|
|
switch (getBridgeKind()) {
|
||
|
|
case OBC_Bridge:
|
||
|
|
return "__bridge";
|
||
|
|
case OBC_BridgeTransfer:
|
||
|
|
return "__bridge_transfer";
|
||
|
|
case OBC_BridgeRetained:
|
||
|
|
return "__bridge_retained";
|
||
|
|
}
|
||
|
|
|
||
|
|
llvm_unreachable("Invalid BridgeKind!");
|
||
|
|
}
|