Coverage Report

Created: 2021-08-24 07:12

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/ExprObjC.cpp
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1
//===- ExprObjC.cpp - (ObjC) Expression AST Node Implementation -----------===//
2
//
3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4
// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the subclesses of Expr class declared in ExprObjC.h
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ExprObjC.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ComputeDependence.h"
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#include "clang/AST/DependenceFlags.h"
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#include "clang/AST/SelectorLocationsKind.h"
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#include "clang/AST/Type.h"
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#include "clang/AST/TypeLoc.h"
20
#include "llvm/ADT/SmallVector.h"
21
#include "llvm/Support/ErrorHandling.h"
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#include <algorithm>
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#include <cassert>
24
#include <cstdint>
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26
using namespace clang;
27
28
ObjCArrayLiteral::ObjCArrayLiteral(ArrayRef<Expr *> Elements, QualType T,
29
                                   ObjCMethodDecl *Method, SourceRange SR)
30
    : Expr(ObjCArrayLiteralClass, T, VK_PRValue, OK_Ordinary),
31
282
      NumElements(Elements.size()), Range(SR), ArrayWithObjectsMethod(Method) {
32
282
  Expr **SaveElements = getElements();
33
746
  for (unsigned I = 0, N = Elements.size(); I != N; 
++I464
)
34
464
    SaveElements[I] = Elements[I];
35
36
282
  setDependence(computeDependence(this));
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282
}
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ObjCArrayLiteral *ObjCArrayLiteral::Create(const ASTContext &C,
40
                                           ArrayRef<Expr *> Elements,
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                                           QualType T, ObjCMethodDecl *Method,
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282
                                           SourceRange SR) {
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282
  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Elements.size()));
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282
  return new (Mem) ObjCArrayLiteral(Elements, T, Method, SR);
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282
}
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ObjCArrayLiteral *ObjCArrayLiteral::CreateEmpty(const ASTContext &C,
48
4
                                                unsigned NumElements) {
49
4
  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumElements));
50
4
  return new (Mem) ObjCArrayLiteral(EmptyShell(), NumElements);
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4
}
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ObjCDictionaryLiteral::ObjCDictionaryLiteral(ArrayRef<ObjCDictionaryElement> VK,
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                                             bool HasPackExpansions, QualType T,
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                                             ObjCMethodDecl *method,
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                                             SourceRange SR)
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    : Expr(ObjCDictionaryLiteralClass, T, VK_PRValue, OK_Ordinary),
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      NumElements(VK.size()), HasPackExpansions(HasPackExpansions), Range(SR),
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210
      DictWithObjectsMethod(method) {
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210
  KeyValuePair *KeyValues = getTrailingObjects<KeyValuePair>();
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210
  ExpansionData *Expansions =
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210
      HasPackExpansions ? 
getTrailingObjects<ExpansionData>()3
:
nullptr207
;
63
531
  for (unsigned I = 0; I < NumElements; 
I++321
) {
64
321
    KeyValues[I].Key = VK[I].Key;
65
321
    KeyValues[I].Value = VK[I].Value;
66
321
    if (Expansions) {
67
6
      Expansions[I].EllipsisLoc = VK[I].EllipsisLoc;
68
6
      if (VK[I].NumExpansions)
69
0
        Expansions[I].NumExpansionsPlusOne = *VK[I].NumExpansions + 1;
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6
      else
71
6
        Expansions[I].NumExpansionsPlusOne = 0;
72
6
    }
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321
  }
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210
  setDependence(computeDependence(this));
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210
}
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ObjCDictionaryLiteral *
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ObjCDictionaryLiteral::Create(const ASTContext &C,
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                              ArrayRef<ObjCDictionaryElement> VK,
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                              bool HasPackExpansions, QualType T,
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210
                              ObjCMethodDecl *method, SourceRange SR) {
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210
  void *Mem = C.Allocate(totalSizeToAlloc<KeyValuePair, ExpansionData>(
83
210
      VK.size(), HasPackExpansions ? 
VK.size()3
:
0207
));
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210
  return new (Mem) ObjCDictionaryLiteral(VK, HasPackExpansions, T, method, SR);
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210
}
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ObjCDictionaryLiteral *
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ObjCDictionaryLiteral::CreateEmpty(const ASTContext &C, unsigned NumElements,
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7
                                   bool HasPackExpansions) {
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7
  void *Mem = C.Allocate(totalSizeToAlloc<KeyValuePair, ExpansionData>(
91
7
      NumElements, HasPackExpansions ? 
NumElements3
:
04
));
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7
  return new (Mem)
93
7
      ObjCDictionaryLiteral(EmptyShell(), NumElements, HasPackExpansions);
94
7
}
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96
3.64k
QualType ObjCPropertyRefExpr::getReceiverType(const ASTContext &ctx) const {
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3.64k
  if (isClassReceiver())
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191
    return ctx.getObjCInterfaceType(getClassReceiver());
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100
3.45k
  if (isSuperReceiver())
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    return getSuperReceiverType();
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3.33k
  return getBase()->getType();
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3.45k
}
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ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
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                                 SourceLocation LBracLoc,
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                                 SourceLocation SuperLoc, bool IsInstanceSuper,
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                                 QualType SuperType, Selector Sel,
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                                 ArrayRef<SourceLocation> SelLocs,
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                                 SelectorLocationsKind SelLocsK,
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                                 ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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                                 SourceLocation RBracLoc, bool isImplicit)
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    : Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
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      SelectorOrMethod(
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          reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
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      Kind(IsInstanceSuper ? SuperInstance : SuperClass),
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      HasMethod(Method != nullptr), IsDelegateInitCall(false),
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      IsImplicit(isImplicit), SuperLoc(SuperLoc), LBracLoc(LBracLoc),
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1.24k
      RBracLoc(RBracLoc) {
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1.24k
  initArgsAndSelLocs(Args, SelLocs, SelLocsK);
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1.24k
  setReceiverPointer(SuperType.getAsOpaquePtr());
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1.24k
  setDependence(computeDependence(this));
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1.24k
}
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ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
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                                 SourceLocation LBracLoc,
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                                 TypeSourceInfo *Receiver, Selector Sel,
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                                 ArrayRef<SourceLocation> SelLocs,
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                                 SelectorLocationsKind SelLocsK,
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                                 ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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                                 SourceLocation RBracLoc, bool isImplicit)
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    : Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
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      SelectorOrMethod(
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          reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
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      Kind(Class), HasMethod(Method != nullptr), IsDelegateInitCall(false),
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7.58k
      IsImplicit(isImplicit), LBracLoc(LBracLoc), RBracLoc(RBracLoc) {
138
7.58k
  initArgsAndSelLocs(Args, SelLocs, SelLocsK);
139
7.58k
  setReceiverPointer(Receiver);
140
7.58k
  setDependence(computeDependence(this));
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7.58k
}
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ObjCMessageExpr::ObjCMessageExpr(QualType T, ExprValueKind VK,
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                                 SourceLocation LBracLoc, Expr *Receiver,
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                                 Selector Sel, ArrayRef<SourceLocation> SelLocs,
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                                 SelectorLocationsKind SelLocsK,
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                                 ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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                                 SourceLocation RBracLoc, bool isImplicit)
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    : Expr(ObjCMessageExprClass, T, VK, OK_Ordinary),
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      SelectorOrMethod(
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          reinterpret_cast<uintptr_t>(Method ? Method : Sel.getAsOpaquePtr())),
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      Kind(Instance), HasMethod(Method != nullptr), IsDelegateInitCall(false),
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16.5k
      IsImplicit(isImplicit), LBracLoc(LBracLoc), RBracLoc(RBracLoc) {
154
16.5k
  initArgsAndSelLocs(Args, SelLocs, SelLocsK);
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16.5k
  setReceiverPointer(Receiver);
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16.5k
  setDependence(computeDependence(this));
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16.5k
}
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void ObjCMessageExpr::initArgsAndSelLocs(ArrayRef<Expr *> Args,
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                                         ArrayRef<SourceLocation> SelLocs,
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25.3k
                                         SelectorLocationsKind SelLocsK) {
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25.3k
  setNumArgs(Args.size());
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25.3k
  Expr **MyArgs = getArgs();
164
44.1k
  for (unsigned I = 0; I != Args.size(); 
++I18.8k
)
165
18.8k
    MyArgs[I] = Args[I];
166
167
25.3k
  SelLocsKind = SelLocsK;
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25.3k
  if (!isImplicit()) {
169
22.5k
    if (SelLocsK == SelLoc_NonStandard)
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1.54k
      std::copy(SelLocs.begin(), SelLocs.end(), getStoredSelLocs());
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22.5k
  }
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25.3k
}
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ObjCMessageExpr *
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ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
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                        SourceLocation LBracLoc, SourceLocation SuperLoc,
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                        bool IsInstanceSuper, QualType SuperType, Selector Sel,
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                        ArrayRef<SourceLocation> SelLocs,
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                        ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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1.24k
                        SourceLocation RBracLoc, bool isImplicit) {
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1.24k
  assert((!SelLocs.empty() || isImplicit) &&
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1.24k
         "No selector locs for non-implicit message");
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0
  ObjCMessageExpr *Mem;
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1.24k
  SelectorLocationsKind SelLocsK = SelectorLocationsKind();
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1.24k
  if (isImplicit)
186
74
    Mem = alloc(Context, Args.size(), 0);
187
1.17k
  else
188
1.17k
    Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
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1.24k
  return new (Mem) ObjCMessageExpr(T, VK, LBracLoc, SuperLoc, IsInstanceSuper,
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1.24k
                                   SuperType, Sel, SelLocs, SelLocsK, Method,
191
1.24k
                                   Args, RBracLoc, isImplicit);
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1.24k
}
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ObjCMessageExpr *
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ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
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                        SourceLocation LBracLoc, TypeSourceInfo *Receiver,
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                        Selector Sel, ArrayRef<SourceLocation> SelLocs,
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                        ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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7.58k
                        SourceLocation RBracLoc, bool isImplicit) {
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7.58k
  assert((!SelLocs.empty() || isImplicit) &&
201
7.58k
         "No selector locs for non-implicit message");
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0
  ObjCMessageExpr *Mem;
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7.58k
  SelectorLocationsKind SelLocsK = SelectorLocationsKind();
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7.58k
  if (isImplicit)
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206
    Mem = alloc(Context, Args.size(), 0);
206
7.37k
  else
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7.37k
    Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
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7.58k
  return new (Mem)
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7.58k
      ObjCMessageExpr(T, VK, LBracLoc, Receiver, Sel, SelLocs, SelLocsK, Method,
210
7.58k
                      Args, RBracLoc, isImplicit);
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7.58k
}
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ObjCMessageExpr *
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ObjCMessageExpr::Create(const ASTContext &Context, QualType T, ExprValueKind VK,
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                        SourceLocation LBracLoc, Expr *Receiver, Selector Sel,
216
                        ArrayRef<SourceLocation> SelLocs,
217
                        ObjCMethodDecl *Method, ArrayRef<Expr *> Args,
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16.5k
                        SourceLocation RBracLoc, bool isImplicit) {
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16.5k
  assert((!SelLocs.empty() || isImplicit) &&
220
16.5k
         "No selector locs for non-implicit message");
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0
  ObjCMessageExpr *Mem;
222
16.5k
  SelectorLocationsKind SelLocsK = SelectorLocationsKind();
223
16.5k
  if (isImplicit)
224
2.52k
    Mem = alloc(Context, Args.size(), 0);
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14.0k
  else
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14.0k
    Mem = alloc(Context, Args, RBracLoc, SelLocs, Sel, SelLocsK);
227
16.5k
  return new (Mem)
228
16.5k
      ObjCMessageExpr(T, VK, LBracLoc, Receiver, Sel, SelLocs, SelLocsK, Method,
229
16.5k
                      Args, RBracLoc, isImplicit);
230
16.5k
}
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ObjCMessageExpr *ObjCMessageExpr::CreateEmpty(const ASTContext &Context,
233
                                              unsigned NumArgs,
234
40
                                              unsigned NumStoredSelLocs) {
235
40
  ObjCMessageExpr *Mem = alloc(Context, NumArgs, NumStoredSelLocs);
236
40
  return new (Mem) ObjCMessageExpr(EmptyShell(), NumArgs);
237
40
}
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239
ObjCMessageExpr *ObjCMessageExpr::alloc(const ASTContext &C,
240
                                        ArrayRef<Expr *> Args,
241
                                        SourceLocation RBraceLoc,
242
                                        ArrayRef<SourceLocation> SelLocs,
243
                                        Selector Sel,
244
22.5k
                                        SelectorLocationsKind &SelLocsK) {
245
22.5k
  SelLocsK = hasStandardSelectorLocs(Sel, SelLocs, Args, RBraceLoc);
246
22.5k
  unsigned NumStoredSelLocs =
247
22.5k
      (SelLocsK == SelLoc_NonStandard) ? 
SelLocs.size()1.54k
:
021.0k
;
248
22.5k
  return alloc(C, Args.size(), NumStoredSelLocs);
249
22.5k
}
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251
ObjCMessageExpr *ObjCMessageExpr::alloc(const ASTContext &C, unsigned NumArgs,
252
25.4k
                                        unsigned NumStoredSelLocs) {
253
25.4k
  return (ObjCMessageExpr *)C.Allocate(
254
25.4k
      totalSizeToAlloc<void *, SourceLocation>(NumArgs + 1, NumStoredSelLocs),
255
25.4k
      alignof(ObjCMessageExpr));
256
25.4k
}
257
258
void ObjCMessageExpr::getSelectorLocs(
259
661
    SmallVectorImpl<SourceLocation> &SelLocs) const {
260
1.30k
  for (unsigned i = 0, e = getNumSelectorLocs(); i != e; 
++i643
)
261
643
    SelLocs.push_back(getSelectorLoc(i));
262
661
}
263
264
265
9
QualType ObjCMessageExpr::getCallReturnType(ASTContext &Ctx) const {
266
9
  if (const ObjCMethodDecl *MD = getMethodDecl()) {
267
9
    QualType QT = MD->getReturnType();
268
9
    if (QT == Ctx.getObjCInstanceType()) {
269
      // instancetype corresponds to expression types.
270
0
      return getType();
271
0
    }
272
9
    return QT;
273
9
  }
274
0
  return Ctx.getReferenceQualifiedType(this);
275
9
}
276
277
72
SourceRange ObjCMessageExpr::getReceiverRange() const {
278
72
  switch (getReceiverKind()) {
279
72
  case Instance:
280
72
    return getInstanceReceiver()->getSourceRange();
281
282
0
  case Class:
283
0
    return getClassReceiverTypeInfo()->getTypeLoc().getSourceRange();
284
285
0
  case SuperInstance:
286
0
  case SuperClass:
287
0
    return getSuperLoc();
288
72
  }
289
290
0
  llvm_unreachable("Invalid ReceiverKind!");
291
0
}
292
293
48.8k
Selector ObjCMessageExpr::getSelector() const {
294
48.8k
  if (HasMethod)
295
48.0k
    return reinterpret_cast<const ObjCMethodDecl *>(SelectorOrMethod)
296
48.0k
        ->getSelector();
297
832
  return Selector(SelectorOrMethod);
298
48.8k
}
299
300
92.0k
QualType ObjCMessageExpr::getReceiverType() const {
301
92.0k
  switch (getReceiverKind()) {
302
80.1k
  case Instance:
303
80.1k
    return getInstanceReceiver()->getType();
304
7.35k
  case Class:
305
7.35k
    return getClassReceiver();
306
4.49k
  case SuperInstance:
307
4.53k
  case SuperClass:
308
4.53k
    return getSuperType();
309
92.0k
  }
310
311
0
  llvm_unreachable("unexpected receiver kind");
312
0
}
313
314
91.8k
ObjCInterfaceDecl *ObjCMessageExpr::getReceiverInterface() const {
315
91.8k
  QualType T = getReceiverType();
316
317
91.8k
  if (const ObjCObjectPointerType *Ptr = T->getAs<ObjCObjectPointerType>())
318
84.3k
    return Ptr->getInterfaceDecl();
319
320
7.49k
  if (const ObjCObjectType *Ty = T->getAs<ObjCObjectType>())
321
7.36k
    return Ty->getInterface();
322
323
123
  return nullptr;
324
7.49k
}
325
326
93.8k
Stmt::child_range ObjCMessageExpr::children() {
327
93.8k
  Stmt **begin;
328
93.8k
  if (getReceiverKind() == Instance)
329
63.1k
    begin = reinterpret_cast<Stmt **>(getTrailingObjects<void *>());
330
30.6k
  else
331
30.6k
    begin = reinterpret_cast<Stmt **>(getArgs());
332
93.8k
  return child_range(begin,
333
93.8k
                     reinterpret_cast<Stmt **>(getArgs() + getNumArgs()));
334
93.8k
}
335
336
0
Stmt::const_child_range ObjCMessageExpr::children() const {
337
0
  auto Children = const_cast<ObjCMessageExpr *>(this)->children();
338
0
  return const_child_range(Children.begin(), Children.end());
339
0
}
340
341
4
StringRef ObjCBridgedCastExpr::getBridgeKindName() const {
342
4
  switch (getBridgeKind()) {
343
4
  case OBC_Bridge:
344
4
    return "__bridge";
345
0
  case OBC_BridgeTransfer:
346
0
    return "__bridge_transfer";
347
0
  case OBC_BridgeRetained:
348
0
    return "__bridge_retained";
349
4
  }
350
351
0
  llvm_unreachable("Invalid BridgeKind!");
352
0
}