clang  6.0.0svn
BodyFarm.cpp
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1 //== BodyFarm.cpp - Factory for conjuring up fake bodies ----------*- C++ -*-//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // BodyFarm is a factory for creating faux implementations for functions/methods
11 // for analysis purposes.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "BodyFarm.h"
16 #include "clang/AST/ASTContext.h"
17 #include "clang/AST/Decl.h"
18 #include "clang/AST/Expr.h"
19 #include "clang/AST/ExprObjC.h"
21 #include "llvm/ADT/StringSwitch.h"
22 
23 using namespace clang;
24 
25 //===----------------------------------------------------------------------===//
26 // Helper creation functions for constructing faux ASTs.
27 //===----------------------------------------------------------------------===//
28 
29 static bool isDispatchBlock(QualType Ty) {
30  // Is it a block pointer?
31  const BlockPointerType *BPT = Ty->getAs<BlockPointerType>();
32  if (!BPT)
33  return false;
34 
35  // Check if the block pointer type takes no arguments and
36  // returns void.
37  const FunctionProtoType *FT =
39  return FT && FT->getReturnType()->isVoidType() && FT->getNumParams() == 0;
40 }
41 
42 namespace {
43 class ASTMaker {
44 public:
45  ASTMaker(ASTContext &C) : C(C) {}
46 
47  /// Create a new BinaryOperator representing a simple assignment.
48  BinaryOperator *makeAssignment(const Expr *LHS, const Expr *RHS, QualType Ty);
49 
50  /// Create a new BinaryOperator representing a comparison.
51  BinaryOperator *makeComparison(const Expr *LHS, const Expr *RHS,
53 
54  /// Create a new compound stmt using the provided statements.
55  CompoundStmt *makeCompound(ArrayRef<Stmt*>);
56 
57  /// Create a new DeclRefExpr for the referenced variable.
58  DeclRefExpr *makeDeclRefExpr(const VarDecl *D);
59 
60  /// Create a new UnaryOperator representing a dereference.
61  UnaryOperator *makeDereference(const Expr *Arg, QualType Ty);
62 
63  /// Create an implicit cast for an integer conversion.
64  Expr *makeIntegralCast(const Expr *Arg, QualType Ty);
65 
66  /// Create an implicit cast to a builtin boolean type.
67  ImplicitCastExpr *makeIntegralCastToBoolean(const Expr *Arg);
68 
69  // Create an implicit cast for lvalue-to-rvaluate conversions.
70  ImplicitCastExpr *makeLvalueToRvalue(const Expr *Arg, QualType Ty);
71 
72  /// Create an Objective-C bool literal.
73  ObjCBoolLiteralExpr *makeObjCBool(bool Val);
74 
75  /// Create an Objective-C ivar reference.
76  ObjCIvarRefExpr *makeObjCIvarRef(const Expr *Base, const ObjCIvarDecl *IVar);
77 
78  /// Create a Return statement.
79  ReturnStmt *makeReturn(const Expr *RetVal);
80 
81 private:
82  ASTContext &C;
83 };
84 }
85 
86 BinaryOperator *ASTMaker::makeAssignment(const Expr *LHS, const Expr *RHS,
87  QualType Ty) {
88  return new (C) BinaryOperator(const_cast<Expr*>(LHS), const_cast<Expr*>(RHS),
89  BO_Assign, Ty, VK_RValue,
91 }
92 
93 BinaryOperator *ASTMaker::makeComparison(const Expr *LHS, const Expr *RHS,
95  assert(BinaryOperator::isLogicalOp(Op) ||
97  return new (C) BinaryOperator(const_cast<Expr*>(LHS),
98  const_cast<Expr*>(RHS),
99  Op,
100  C.getLogicalOperationType(),
101  VK_RValue,
103 }
104 
105 CompoundStmt *ASTMaker::makeCompound(ArrayRef<Stmt *> Stmts) {
106  return new (C) CompoundStmt(C, Stmts, SourceLocation(), SourceLocation());
107 }
108 
109 DeclRefExpr *ASTMaker::makeDeclRefExpr(const VarDecl *D) {
110  DeclRefExpr *DR =
111  DeclRefExpr::Create(/* Ctx = */ C,
112  /* QualifierLoc = */ NestedNameSpecifierLoc(),
113  /* TemplateKWLoc = */ SourceLocation(),
114  /* D = */ const_cast<VarDecl*>(D),
115  /* RefersToEnclosingVariableOrCapture = */ false,
116  /* NameLoc = */ SourceLocation(),
117  /* T = */ D->getType(),
118  /* VK = */ VK_LValue);
119  return DR;
120 }
121 
122 UnaryOperator *ASTMaker::makeDereference(const Expr *Arg, QualType Ty) {
123  return new (C) UnaryOperator(const_cast<Expr*>(Arg), UO_Deref, Ty,
125 }
126 
127 ImplicitCastExpr *ASTMaker::makeLvalueToRvalue(const Expr *Arg, QualType Ty) {
128  return ImplicitCastExpr::Create(C, Ty, CK_LValueToRValue,
129  const_cast<Expr*>(Arg), nullptr, VK_RValue);
130 }
131 
132 Expr *ASTMaker::makeIntegralCast(const Expr *Arg, QualType Ty) {
133  if (Arg->getType() == Ty)
134  return const_cast<Expr*>(Arg);
135 
136  return ImplicitCastExpr::Create(C, Ty, CK_IntegralCast,
137  const_cast<Expr*>(Arg), nullptr, VK_RValue);
138 }
139 
140 ImplicitCastExpr *ASTMaker::makeIntegralCastToBoolean(const Expr *Arg) {
141  return ImplicitCastExpr::Create(C, C.BoolTy, CK_IntegralToBoolean,
142  const_cast<Expr*>(Arg), nullptr, VK_RValue);
143 }
144 
145 ObjCBoolLiteralExpr *ASTMaker::makeObjCBool(bool Val) {
146  QualType Ty = C.getBOOLDecl() ? C.getBOOLType() : C.ObjCBuiltinBoolTy;
147  return new (C) ObjCBoolLiteralExpr(Val, Ty, SourceLocation());
148 }
149 
150 ObjCIvarRefExpr *ASTMaker::makeObjCIvarRef(const Expr *Base,
151  const ObjCIvarDecl *IVar) {
152  return new (C) ObjCIvarRefExpr(const_cast<ObjCIvarDecl*>(IVar),
153  IVar->getType(), SourceLocation(),
154  SourceLocation(), const_cast<Expr*>(Base),
155  /*arrow=*/true, /*free=*/false);
156 }
157 
158 
159 ReturnStmt *ASTMaker::makeReturn(const Expr *RetVal) {
160  return new (C) ReturnStmt(SourceLocation(), const_cast<Expr*>(RetVal),
161  nullptr);
162 }
163 
164 //===----------------------------------------------------------------------===//
165 // Creation functions for faux ASTs.
166 //===----------------------------------------------------------------------===//
167 
168 typedef Stmt *(*FunctionFarmer)(ASTContext &C, const FunctionDecl *D);
169 
170 /// Create a fake body for dispatch_once.
172  // Check if we have at least two parameters.
173  if (D->param_size() != 2)
174  return nullptr;
175 
176  // Check if the first parameter is a pointer to integer type.
177  const ParmVarDecl *Predicate = D->getParamDecl(0);
178  QualType PredicateQPtrTy = Predicate->getType();
179  const PointerType *PredicatePtrTy = PredicateQPtrTy->getAs<PointerType>();
180  if (!PredicatePtrTy)
181  return nullptr;
182  QualType PredicateTy = PredicatePtrTy->getPointeeType();
183  if (!PredicateTy->isIntegerType())
184  return nullptr;
185 
186  // Check if the second parameter is the proper block type.
187  const ParmVarDecl *Block = D->getParamDecl(1);
188  QualType Ty = Block->getType();
189  if (!isDispatchBlock(Ty))
190  return nullptr;
191 
192  // Everything checks out. Create a fakse body that checks the predicate,
193  // sets it, and calls the block. Basically, an AST dump of:
194  //
195  // void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block) {
196  // if (!*predicate) {
197  // *predicate = 1;
198  // block();
199  // }
200  // }
201 
202  ASTMaker M(C);
203 
204  // (1) Create the call.
205  DeclRefExpr *DR = M.makeDeclRefExpr(Block);
206  ImplicitCastExpr *ICE = M.makeLvalueToRvalue(DR, Ty);
207  CallExpr *CE = new (C) CallExpr(C, ICE, None, C.VoidTy, VK_RValue,
208  SourceLocation());
209 
210  // (2) Create the assignment to the predicate.
211  IntegerLiteral *IL =
212  IntegerLiteral::Create(C, llvm::APInt(C.getTypeSize(C.IntTy), (uint64_t) 1),
213  C.IntTy, SourceLocation());
214  BinaryOperator *B =
215  M.makeAssignment(
216  M.makeDereference(
217  M.makeLvalueToRvalue(
218  M.makeDeclRefExpr(Predicate), PredicateQPtrTy),
219  PredicateTy),
220  M.makeIntegralCast(IL, PredicateTy),
221  PredicateTy);
222 
223  // (3) Create the compound statement.
224  Stmt *Stmts[] = { B, CE };
225  CompoundStmt *CS = M.makeCompound(Stmts);
226 
227  // (4) Create the 'if' condition.
228  ImplicitCastExpr *LValToRval =
229  M.makeLvalueToRvalue(
230  M.makeDereference(
231  M.makeLvalueToRvalue(
232  M.makeDeclRefExpr(Predicate),
233  PredicateQPtrTy),
234  PredicateTy),
235  PredicateTy);
236 
237  UnaryOperator *UO = new (C) UnaryOperator(LValToRval, UO_LNot, C.IntTy,
239  SourceLocation());
240 
241  // (5) Create the 'if' statement.
242  IfStmt *If = new (C) IfStmt(C, SourceLocation(), false, nullptr, nullptr,
243  UO, CS);
244  return If;
245 }
246 
247 /// Create a fake body for dispatch_sync.
249  // Check if we have at least two parameters.
250  if (D->param_size() != 2)
251  return nullptr;
252 
253  // Check if the second parameter is a block.
254  const ParmVarDecl *PV = D->getParamDecl(1);
255  QualType Ty = PV->getType();
256  if (!isDispatchBlock(Ty))
257  return nullptr;
258 
259  // Everything checks out. Create a fake body that just calls the block.
260  // This is basically just an AST dump of:
261  //
262  // void dispatch_sync(dispatch_queue_t queue, void (^block)(void)) {
263  // block();
264  // }
265  //
266  ASTMaker M(C);
267  DeclRefExpr *DR = M.makeDeclRefExpr(PV);
268  ImplicitCastExpr *ICE = M.makeLvalueToRvalue(DR, Ty);
269  CallExpr *CE = new (C) CallExpr(C, ICE, None, C.VoidTy, VK_RValue,
270  SourceLocation());
271  return CE;
272 }
273 
275 {
276  // There are exactly 3 arguments.
277  if (D->param_size() != 3)
278  return nullptr;
279 
280  // Signature:
281  // _Bool OSAtomicCompareAndSwapPtr(void *__oldValue,
282  // void *__newValue,
283  // void * volatile *__theValue)
284  // Generate body:
285  // if (oldValue == *theValue) {
286  // *theValue = newValue;
287  // return YES;
288  // }
289  // else return NO;
290 
291  QualType ResultTy = D->getReturnType();
292  bool isBoolean = ResultTy->isBooleanType();
293  if (!isBoolean && !ResultTy->isIntegralType(C))
294  return nullptr;
295 
296  const ParmVarDecl *OldValue = D->getParamDecl(0);
297  QualType OldValueTy = OldValue->getType();
298 
299  const ParmVarDecl *NewValue = D->getParamDecl(1);
300  QualType NewValueTy = NewValue->getType();
301 
302  assert(OldValueTy == NewValueTy);
303 
304  const ParmVarDecl *TheValue = D->getParamDecl(2);
305  QualType TheValueTy = TheValue->getType();
306  const PointerType *PT = TheValueTy->getAs<PointerType>();
307  if (!PT)
308  return nullptr;
309  QualType PointeeTy = PT->getPointeeType();
310 
311  ASTMaker M(C);
312  // Construct the comparison.
313  Expr *Comparison =
314  M.makeComparison(
315  M.makeLvalueToRvalue(M.makeDeclRefExpr(OldValue), OldValueTy),
316  M.makeLvalueToRvalue(
317  M.makeDereference(
318  M.makeLvalueToRvalue(M.makeDeclRefExpr(TheValue), TheValueTy),
319  PointeeTy),
320  PointeeTy),
321  BO_EQ);
322 
323  // Construct the body of the IfStmt.
324  Stmt *Stmts[2];
325  Stmts[0] =
326  M.makeAssignment(
327  M.makeDereference(
328  M.makeLvalueToRvalue(M.makeDeclRefExpr(TheValue), TheValueTy),
329  PointeeTy),
330  M.makeLvalueToRvalue(M.makeDeclRefExpr(NewValue), NewValueTy),
331  NewValueTy);
332 
333  Expr *BoolVal = M.makeObjCBool(true);
334  Expr *RetVal = isBoolean ? M.makeIntegralCastToBoolean(BoolVal)
335  : M.makeIntegralCast(BoolVal, ResultTy);
336  Stmts[1] = M.makeReturn(RetVal);
337  CompoundStmt *Body = M.makeCompound(Stmts);
338 
339  // Construct the else clause.
340  BoolVal = M.makeObjCBool(false);
341  RetVal = isBoolean ? M.makeIntegralCastToBoolean(BoolVal)
342  : M.makeIntegralCast(BoolVal, ResultTy);
343  Stmt *Else = M.makeReturn(RetVal);
344 
345  /// Construct the If.
346  Stmt *If = new (C) IfStmt(C, SourceLocation(), false, nullptr, nullptr,
347  Comparison, Body, SourceLocation(), Else);
348 
349  return If;
350 }
351 
353  D = D->getCanonicalDecl();
354 
355  Optional<Stmt *> &Val = Bodies[D];
356  if (Val.hasValue())
357  return Val.getValue();
358 
359  Val = nullptr;
360 
361  if (D->getIdentifier() == nullptr)
362  return nullptr;
363 
364  StringRef Name = D->getName();
365  if (Name.empty())
366  return nullptr;
367 
368  FunctionFarmer FF;
369 
370  if (Name.startswith("OSAtomicCompareAndSwap") ||
371  Name.startswith("objc_atomicCompareAndSwap")) {
373  }
374  else {
375  FF = llvm::StringSwitch<FunctionFarmer>(Name)
376  .Case("dispatch_sync", create_dispatch_sync)
377  .Case("dispatch_once", create_dispatch_once)
378  .Default(nullptr);
379  }
380 
381  if (FF) { Val = FF(C, D); }
382  else if (Injector) { Val = Injector->getBody(D); }
383  return Val.getValue();
384 }
385 
386 static const ObjCIvarDecl *findBackingIvar(const ObjCPropertyDecl *Prop) {
387  const ObjCIvarDecl *IVar = Prop->getPropertyIvarDecl();
388 
389  if (IVar)
390  return IVar;
391 
392  // When a readonly property is shadowed in a class extensions with a
393  // a readwrite property, the instance variable belongs to the shadowing
394  // property rather than the shadowed property. If there is no instance
395  // variable on a readonly property, check to see whether the property is
396  // shadowed and if so try to get the instance variable from shadowing
397  // property.
398  if (!Prop->isReadOnly())
399  return nullptr;
400 
401  auto *Container = cast<ObjCContainerDecl>(Prop->getDeclContext());
402  const ObjCInterfaceDecl *PrimaryInterface = nullptr;
403  if (auto *InterfaceDecl = dyn_cast<ObjCInterfaceDecl>(Container)) {
404  PrimaryInterface = InterfaceDecl;
405  } else if (auto *CategoryDecl = dyn_cast<ObjCCategoryDecl>(Container)) {
406  PrimaryInterface = CategoryDecl->getClassInterface();
407  } else if (auto *ImplDecl = dyn_cast<ObjCImplDecl>(Container)) {
408  PrimaryInterface = ImplDecl->getClassInterface();
409  } else {
410  return nullptr;
411  }
412 
413  // FindPropertyVisibleInPrimaryClass() looks first in class extensions, so it
414  // is guaranteed to find the shadowing property, if it exists, rather than
415  // the shadowed property.
416  auto *ShadowingProp = PrimaryInterface->FindPropertyVisibleInPrimaryClass(
417  Prop->getIdentifier(), Prop->getQueryKind());
418  if (ShadowingProp && ShadowingProp != Prop) {
419  IVar = ShadowingProp->getPropertyIvarDecl();
420  }
421 
422  return IVar;
423 }
424 
426  const ObjCPropertyDecl *Prop) {
427  // First, find the backing ivar.
428  const ObjCIvarDecl *IVar = findBackingIvar(Prop);
429  if (!IVar)
430  return nullptr;
431 
432  // Ignore weak variables, which have special behavior.
434  return nullptr;
435 
436  // Look to see if Sema has synthesized a body for us. This happens in
437  // Objective-C++ because the return value may be a C++ class type with a
438  // non-trivial copy constructor. We can only do this if we can find the
439  // @synthesize for this property, though (or if we know it's been auto-
440  // synthesized).
441  const ObjCImplementationDecl *ImplDecl =
443  if (ImplDecl) {
444  for (const auto *I : ImplDecl->property_impls()) {
445  if (I->getPropertyDecl() != Prop)
446  continue;
447 
448  if (I->getGetterCXXConstructor()) {
449  ASTMaker M(Ctx);
450  return M.makeReturn(I->getGetterCXXConstructor());
451  }
452  }
453  }
454 
455  // Sanity check that the property is the same type as the ivar, or a
456  // reference to it, and that it is either an object pointer or trivially
457  // copyable.
458  if (!Ctx.hasSameUnqualifiedType(IVar->getType(),
459  Prop->getType().getNonReferenceType()))
460  return nullptr;
461  if (!IVar->getType()->isObjCLifetimeType() &&
462  !IVar->getType().isTriviallyCopyableType(Ctx))
463  return nullptr;
464 
465  // Generate our body:
466  // return self->_ivar;
467  ASTMaker M(Ctx);
468 
469  const VarDecl *selfVar = Prop->getGetterMethodDecl()->getSelfDecl();
470  if (!selfVar)
471  return nullptr;
472 
473  Expr *loadedIVar =
474  M.makeObjCIvarRef(
475  M.makeLvalueToRvalue(
476  M.makeDeclRefExpr(selfVar),
477  selfVar->getType()),
478  IVar);
479 
480  if (!Prop->getType()->isReferenceType())
481  loadedIVar = M.makeLvalueToRvalue(loadedIVar, IVar->getType());
482 
483  return M.makeReturn(loadedIVar);
484 }
485 
487  // We currently only know how to synthesize property accessors.
488  if (!D->isPropertyAccessor())
489  return nullptr;
490 
491  D = D->getCanonicalDecl();
492 
493  Optional<Stmt *> &Val = Bodies[D];
494  if (Val.hasValue())
495  return Val.getValue();
496  Val = nullptr;
497 
498  const ObjCPropertyDecl *Prop = D->findPropertyDecl();
499  if (!Prop)
500  return nullptr;
501 
502  // For now, we only synthesize getters.
503  // Synthesizing setters would cause false negatives in the
504  // RetainCountChecker because the method body would bind the parameter
505  // to an instance variable, causing it to escape. This would prevent
506  // warning in the following common scenario:
507  //
508  // id foo = [[NSObject alloc] init];
509  // self.foo = foo; // We should warn that foo leaks here.
510  //
511  if (D->param_size() != 0)
512  return nullptr;
513 
514  Val = createObjCPropertyGetter(C, Prop);
515 
516  return Val.getValue();
517 }
518 
Defines the clang::ASTContext interface.
ObjCPropertyQueryKind getQueryKind() const
Definition: DeclObjC.h:837
FunctionDecl - An instance of this class is created to represent a function declaration or definition...
Definition: Decl.h:1629
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2221
QualType getPointeeType() const
Definition: Type.h:2235
A (possibly-)qualified type.
Definition: Type.h:614
unsigned param_size() const
Definition: DeclObjC.h:348
Stmt - This represents one statement.
Definition: Stmt.h:60
IfStmt - This represents an if/then/else.
Definition: Stmt.h:905
bool isLogicalOp() const
Definition: Expr.h:3101
QualType getNonReferenceType() const
If Type is a reference type (e.g., const int&), returns the type that the reference refers to ("const...
Definition: Type.h:5672
Floating point control options.
Definition: LangOptions.h:203
size_t param_size() const
Definition: Decl.h:2092
static bool isDispatchBlock(QualType Ty)
Definition: BodyFarm.cpp:29
VarDecl - An instance of this class is created to represent a variable declaration or definition...
Definition: Decl.h:769
QualType getReturnType() const
Definition: Decl.h:2117
unsigned getNumParams() const
Definition: Type.h:3349
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6052
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:113
ParmVarDecl - Represents a parameter to a function.
Definition: Decl.h:1445
IdentifierInfo * getIdentifier() const
getIdentifier - Get the identifier that names this declaration, if there is one.
Definition: Decl.h:232
QualType getPointeeType() const
Definition: Type.h:2338
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:128
A C++ nested-name-specifier augmented with source location information.
bool isObjCLifetimeType() const
Returns true if objects of this type have lifetime semantics under ARC.
Definition: Type.cpp:3787
Defines the clang::CodeInjector interface which is responsible for injecting AST of function definiti...
bool isReferenceType() const
Definition: Type.h:5731
static DeclRefExpr * Create(const ASTContext &Context, NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, ValueDecl *D, bool RefersToEnclosingVariableOrCapture, SourceLocation NameLoc, QualType T, ExprValueKind VK, NamedDecl *FoundD=nullptr, const TemplateArgumentListInfo *TemplateArgs=nullptr)
Definition: Expr.cpp:391
An r-value expression (a pr-value in the C++11 taxonomy) produces a temporary value.
Definition: Specifiers.h:107
BinaryOperatorKind
bool isTriviallyCopyableType(const ASTContext &Context) const
Return true if this is a trivially copyable type (C++0x [basic.types]p9)
Definition: Type.cpp:2111
PropertyAttributeKind getPropertyAttributes() const
Definition: DeclObjC.h:799
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:2980
bool isReadOnly() const
isReadOnly - Return true iff the property has a setter.
Definition: DeclObjC.h:820
static IntegerLiteral * Create(const ASTContext &C, const llvm::APInt &V, QualType type, SourceLocation l)
Returns a new integer literal with value &#39;V&#39; and type &#39;type&#39;.
Definition: Expr.cpp:748
An ordinary object is located at an address in memory.
Definition: Specifiers.h:123
Represents an ObjC class declaration.
Definition: DeclObjC.h:1108
Stmt *(* FunctionFarmer)(ASTContext &C, const FunctionDecl *D)
Definition: BodyFarm.cpp:168
ObjCMethodDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclObjC.cpp:897
CompoundStmt - This represents a group of statements like { stmt stmt }.
Definition: Stmt.h:575
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3126
static ImplicitCastExpr * Create(const ASTContext &Context, QualType T, CastKind Kind, Expr *Operand, const CXXCastPath *BasePath, ExprValueKind Cat)
Definition: Expr.cpp:1718
static const ObjCIvarDecl * findBackingIvar(const ObjCPropertyDecl *Prop)
Definition: BodyFarm.cpp:386
Expr - This represents one expression.
Definition: Expr.h:106
DeclContext * getDeclContext()
Definition: DeclBase.h:416
ObjCPropertyDecl * FindPropertyVisibleInPrimaryClass(IdentifierInfo *PropertyId, ObjCPropertyQueryKind QueryKind) const
FindPropertyVisibleInPrimaryClass - Finds declaration of the property with name &#39;PropertyId&#39; in the p...
Definition: DeclObjC.cpp:346
QualType getType() const
Definition: Expr.h:128
propimpl_range property_impls() const
Definition: DeclObjC.h:2367
ReturnStmt - This represents a return, optionally of an expression: return; return 4;...
Definition: Stmt.h:1392
static Stmt * create_OSAtomicCompareAndSwap(ASTContext &C, const FunctionDecl *D)
Definition: BodyFarm.cpp:274
UnaryOperator - This represents the unary-expression&#39;s (except sizeof and alignof), the postinc/postdec operators from postfix-expression, and various extensions.
Definition: Expr.h:1717
static Stmt * createObjCPropertyGetter(ASTContext &Ctx, const ObjCPropertyDecl *Prop)
Definition: BodyFarm.cpp:425
ImplicitParamDecl * getSelfDecl() const
Definition: DeclObjC.h:408
QualType getType() const
Definition: DeclObjC.h:788
bool isComparisonOp() const
Definition: Expr.h:3071
Encodes a location in the source.
QualType getReturnType() const
Definition: Type.h:3062
static Stmt * create_dispatch_sync(ASTContext &C, const FunctionDecl *D)
Create a fake body for dispatch_sync.
Definition: BodyFarm.cpp:248
bool isIntegralType(const ASTContext &Ctx) const
Determine whether this type is an integral type.
Definition: Type.cpp:1664
const ParmVarDecl * getParamDecl(unsigned i) const
Definition: Decl.h:2099
CanQualType VoidTy
Definition: ASTContext.h:963
Represents one property declaration in an Objective-C interface.
Definition: DeclObjC.h:704
ImplicitCastExpr - Allows us to explicitly represent implicit type conversions, which have no direct ...
Definition: Expr.h:2817
ObjCImplementationDecl * getImplementation() const
Definition: DeclObjC.cpp:1503
bool hasSameUnqualifiedType(QualType T1, QualType T2) const
Determine whether the given types are equivalent after cvr-qualifiers have been removed.
Definition: ASTContext.h:2147
static Stmt * create_dispatch_once(ASTContext &C, const FunctionDecl *D)
Create a fake body for dispatch_once.
Definition: BodyFarm.cpp:171
Dataflow Directional Tag Classes.
bool isBooleanType() const
Definition: Type.h:5979
Stmt * getBody(const FunctionDecl *D)
Factory method for creating bodies for ordinary functions.
Definition: BodyFarm.cpp:352
const ObjCInterfaceDecl * getContainingInterface() const
Return the class interface that this ivar is logically contained in; this is either the interface whe...
Definition: DeclObjC.cpp:1741
Pointer to a block type.
Definition: Type.h:2324
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2448
bool isIntegerType() const
isIntegerType() does not include complex integers (a GCC extension).
Definition: Type.h:5938
uint64_t getTypeSize(QualType T) const
Return the size of the specified (complete) type T, in bits.
Definition: ASTContext.h:1943
ObjCIvarRefExpr - A reference to an ObjC instance variable.
Definition: ExprObjC.h:479
const ObjCPropertyDecl * findPropertyDecl(bool CheckOverrides=true) const
Returns the property associated with this method&#39;s selector.
Definition: DeclObjC.cpp:1249
bool isVoidType() const
Definition: Type.h:5916
ObjCIvarDecl - Represents an ObjC instance variable.
Definition: DeclObjC.h:1866
ObjCIvarDecl * getPropertyIvarDecl() const
Definition: DeclObjC.h:895
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2209
StringRef getName() const
getName - Get the name of identifier for this declaration as a StringRef.
Definition: Decl.h:237
CanQualType IntTy
Definition: ASTContext.h:971
ObjCBoolLiteralExpr - Objective-C Boolean Literal.
Definition: ExprObjC.h:60
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:956
QualType getType() const
Definition: Decl.h:600
An l-value expression is a reference to an object with independent storage.
Definition: Specifiers.h:111
FunctionDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.cpp:2785
ObjCMethodDecl * getGetterMethodDecl() const
Definition: DeclObjC.h:875
bool isPropertyAccessor() const
Definition: DeclObjC.h:423
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