clang 19.0.0git
Transforms.cpp
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1//===--- Transforms.cpp - Transformations to ARC mode ---------------------===//
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
6//
7//===----------------------------------------------------------------------===//
8
9#include "Transforms.h"
10#include "Internals.h"
17#include "clang/Lex/Lexer.h"
19#include "clang/Sema/Sema.h"
20#include "clang/Sema/SemaObjC.h"
21
22using namespace clang;
23using namespace arcmt;
24using namespace trans;
25
27
29 if (!EnableCFBridgeFns)
30 EnableCFBridgeFns = SemaRef.ObjC().isKnownName("CFBridgingRetain") &&
31 SemaRef.ObjC().isKnownName("CFBridgingRelease");
32 return *EnableCFBridgeFns;
33}
34
35//===----------------------------------------------------------------------===//
36// Helpers.
37//===----------------------------------------------------------------------===//
38
40 bool AllowOnUnknownClass) {
41 if (!Ctx.getLangOpts().ObjCWeakRuntime)
42 return false;
43
44 QualType T = type;
45 if (T.isNull())
46 return false;
47
48 // iOS is always safe to use 'weak'.
49 if (Ctx.getTargetInfo().getTriple().isiOS() ||
50 Ctx.getTargetInfo().getTriple().isWatchOS())
51 AllowOnUnknownClass = true;
52
53 while (const PointerType *ptr = T->getAs<PointerType>())
54 T = ptr->getPointeeType();
55 if (const ObjCObjectPointerType *ObjT = T->getAs<ObjCObjectPointerType>()) {
56 ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl();
57 if (!AllowOnUnknownClass && (!Class || Class->getName() == "NSObject"))
58 return false; // id/NSObject is not safe for weak.
59 if (!AllowOnUnknownClass && !Class->hasDefinition())
60 return false; // forward classes are not verifiable, therefore not safe.
61 if (Class && Class->isArcWeakrefUnavailable())
62 return false;
63 }
64
65 return true;
66}
67
69 if (E->getOpcode() != BO_Assign)
70 return false;
71
72 return isPlusOne(E->getRHS());
73}
74
75bool trans::isPlusOne(const Expr *E) {
76 if (!E)
77 return false;
78 if (const FullExpr *FE = dyn_cast<FullExpr>(E))
79 E = FE->getSubExpr();
80
81 if (const ObjCMessageExpr *
82 ME = dyn_cast<ObjCMessageExpr>(E->IgnoreParenCasts()))
83 if (ME->getMethodFamily() == OMF_retain)
84 return true;
85
86 if (const CallExpr *
87 callE = dyn_cast<CallExpr>(E->IgnoreParenCasts())) {
88 if (const FunctionDecl *FD = callE->getDirectCallee()) {
89 if (FD->hasAttr<CFReturnsRetainedAttr>())
90 return true;
91
92 if (FD->isGlobal() &&
93 FD->getIdentifier() &&
94 FD->getParent()->isTranslationUnit() &&
95 FD->isExternallyVisible() &&
96 ento::cocoa::isRefType(callE->getType(), "CF",
97 FD->getIdentifier()->getName())) {
98 StringRef fname = FD->getIdentifier()->getName();
99 if (fname.ends_with("Retain") || fname.contains("Create") ||
100 fname.contains("Copy"))
101 return true;
102 }
103 }
104 }
105
106 const ImplicitCastExpr *implCE = dyn_cast<ImplicitCastExpr>(E);
107 while (implCE && implCE->getCastKind() == CK_BitCast)
108 implCE = dyn_cast<ImplicitCastExpr>(implCE->getSubExpr());
109
110 return implCE && implCE->getCastKind() == CK_ARCConsumeObject;
111}
112
113/// 'Loc' is the end of a statement range. This returns the location
114/// immediately after the semicolon following the statement.
115/// If no semicolon is found or the location is inside a macro, the returned
116/// source location will be invalid.
118 ASTContext &Ctx, bool IsDecl) {
119 SourceLocation SemiLoc = findSemiAfterLocation(loc, Ctx, IsDecl);
120 if (SemiLoc.isInvalid())
121 return SourceLocation();
122 return SemiLoc.getLocWithOffset(1);
123}
124
125/// \arg Loc is the end of a statement range. This returns the location
126/// of the semicolon following the statement.
127/// If no semicolon is found or the location is inside a macro, the returned
128/// source location will be invalid.
130 ASTContext &Ctx,
131 bool IsDecl) {
133 if (loc.isMacroID()) {
134 if (!Lexer::isAtEndOfMacroExpansion(loc, SM, Ctx.getLangOpts(), &loc))
135 return SourceLocation();
136 }
137 loc = Lexer::getLocForEndOfToken(loc, /*Offset=*/0, SM, Ctx.getLangOpts());
138
139 // Break down the source location.
140 std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(loc);
141
142 // Try to load the file buffer.
143 bool invalidTemp = false;
144 StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
145 if (invalidTemp)
146 return SourceLocation();
147
148 const char *tokenBegin = file.data() + locInfo.second;
149
150 // Lex from the start of the given location.
151 Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
152 Ctx.getLangOpts(),
153 file.begin(), tokenBegin, file.end());
154 Token tok;
155 lexer.LexFromRawLexer(tok);
156 if (tok.isNot(tok::semi)) {
157 if (!IsDecl)
158 return SourceLocation();
159 // Declaration may be followed with other tokens; such as an __attribute,
160 // before ending with a semicolon.
161 return findSemiAfterLocation(tok.getLocation(), Ctx, /*IsDecl*/true);
162 }
163
164 return tok.getLocation();
165}
166
168 if (!E || !E->HasSideEffects(Ctx))
169 return false;
170
171 E = E->IgnoreParenCasts();
172 ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(E);
173 if (!ME)
174 return true;
175 switch (ME->getMethodFamily()) {
176 case OMF_autorelease:
177 case OMF_dealloc:
178 case OMF_release:
179 case OMF_retain:
180 switch (ME->getReceiverKind()) {
182 return false;
184 return hasSideEffects(ME->getInstanceReceiver(), Ctx);
185 default:
186 break;
187 }
188 break;
189 default:
190 break;
191 }
192
193 return true;
194}
195
197 E = E->IgnoreParenCasts();
198 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
199 return DRE->getDecl()->getDeclContext()->isFileContext() &&
200 DRE->getDecl()->isExternallyVisible();
201 if (ConditionalOperator *condOp = dyn_cast<ConditionalOperator>(E))
202 return isGlobalVar(condOp->getTrueExpr()) &&
203 isGlobalVar(condOp->getFalseExpr());
204
205 return false;
206}
207
209 return Pass.SemaRef.PP.isMacroDefined("nil") ? "nil" : "0";
210}
211
212namespace {
213
214class ReferenceClear : public RecursiveASTVisitor<ReferenceClear> {
215 ExprSet &Refs;
216public:
217 ReferenceClear(ExprSet &refs) : Refs(refs) { }
218 bool VisitDeclRefExpr(DeclRefExpr *E) { Refs.erase(E); return true; }
219};
220
221class ReferenceCollector : public RecursiveASTVisitor<ReferenceCollector> {
222 ValueDecl *Dcl;
223 ExprSet &Refs;
224
225public:
226 ReferenceCollector(ValueDecl *D, ExprSet &refs)
227 : Dcl(D), Refs(refs) { }
228
229 bool VisitDeclRefExpr(DeclRefExpr *E) {
230 if (E->getDecl() == Dcl)
231 Refs.insert(E);
232 return true;
233 }
234};
235
236class RemovablesCollector : public RecursiveASTVisitor<RemovablesCollector> {
237 ExprSet &Removables;
238
239public:
240 RemovablesCollector(ExprSet &removables)
241 : Removables(removables) { }
242
243 bool shouldWalkTypesOfTypeLocs() const { return false; }
244
245 bool TraverseStmtExpr(StmtExpr *E) {
246 CompoundStmt *S = E->getSubStmt();
248 I = S->body_begin(), E = S->body_end(); I != E; ++I) {
249 if (I != E - 1)
250 mark(*I);
251 TraverseStmt(*I);
252 }
253 return true;
254 }
255
256 bool VisitCompoundStmt(CompoundStmt *S) {
257 for (auto *I : S->body())
258 mark(I);
259 return true;
260 }
261
262 bool VisitIfStmt(IfStmt *S) {
263 mark(S->getThen());
264 mark(S->getElse());
265 return true;
266 }
267
268 bool VisitWhileStmt(WhileStmt *S) {
269 mark(S->getBody());
270 return true;
271 }
272
273 bool VisitDoStmt(DoStmt *S) {
274 mark(S->getBody());
275 return true;
276 }
277
278 bool VisitForStmt(ForStmt *S) {
279 mark(S->getInit());
280 mark(S->getInc());
281 mark(S->getBody());
282 return true;
283 }
284
285private:
286 void mark(Stmt *S) {
287 if (!S) return;
288
289 while (auto *Label = dyn_cast<LabelStmt>(S))
290 S = Label->getSubStmt();
291 if (auto *E = dyn_cast<Expr>(S))
292 S = E->IgnoreImplicit();
293 if (auto *E = dyn_cast<Expr>(S))
294 Removables.insert(E);
295 }
296};
297
298} // end anonymous namespace
299
301 ReferenceClear(refs).TraverseStmt(S);
302}
303
305 ReferenceCollector(D, refs).TraverseStmt(S);
306}
307
309 RemovablesCollector(exprs).TraverseStmt(S);
310}
311
312//===----------------------------------------------------------------------===//
313// MigrationContext
314//===----------------------------------------------------------------------===//
315
316namespace {
317
318class ASTTransform : public RecursiveASTVisitor<ASTTransform> {
319 MigrationContext &MigrateCtx;
321
322public:
323 ASTTransform(MigrationContext &MigrateCtx) : MigrateCtx(MigrateCtx) { }
324
325 bool shouldWalkTypesOfTypeLocs() const { return false; }
326
327 bool TraverseObjCImplementationDecl(ObjCImplementationDecl *D) {
328 ObjCImplementationContext ImplCtx(MigrateCtx, D);
330 I = MigrateCtx.traversers_begin(),
331 E = MigrateCtx.traversers_end(); I != E; ++I)
332 (*I)->traverseObjCImplementation(ImplCtx);
333
334 return base::TraverseObjCImplementationDecl(D);
335 }
336
337 bool TraverseStmt(Stmt *rootS) {
338 if (!rootS)
339 return true;
340
341 BodyContext BodyCtx(MigrateCtx, rootS);
343 I = MigrateCtx.traversers_begin(),
344 E = MigrateCtx.traversers_end(); I != E; ++I)
345 (*I)->traverseBody(BodyCtx);
346
347 return true;
348 }
349};
350
351}
352
355 I = traversers_begin(), E = traversers_end(); I != E; ++I)
356 delete *I;
357}
358
360 while (!T.isNull()) {
361 if (const AttributedType *AttrT = T->getAs<AttributedType>()) {
362 if (AttrT->getAttrKind() == attr::ObjCOwnership)
363 return !AttrT->getModifiedType()->isObjCRetainableType();
364 }
365
366 if (T->isArrayType())
368 else if (const PointerType *PT = T->getAs<PointerType>())
369 T = PT->getPointeeType();
370 else if (const ReferenceType *RT = T->getAs<ReferenceType>())
371 T = RT->getPointeeType();
372 else
373 break;
374 }
375
376 return false;
377}
378
380 StringRef toAttr,
381 SourceLocation atLoc) {
382 if (atLoc.isMacroID())
383 return false;
384
386
387 // Break down the source location.
388 std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(atLoc);
389
390 // Try to load the file buffer.
391 bool invalidTemp = false;
392 StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
393 if (invalidTemp)
394 return false;
395
396 const char *tokenBegin = file.data() + locInfo.second;
397
398 // Lex from the start of the given location.
399 Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
401 file.begin(), tokenBegin, file.end());
402 Token tok;
403 lexer.LexFromRawLexer(tok);
404 if (tok.isNot(tok::at)) return false;
405 lexer.LexFromRawLexer(tok);
406 if (tok.isNot(tok::raw_identifier)) return false;
407 if (tok.getRawIdentifier() != "property")
408 return false;
409 lexer.LexFromRawLexer(tok);
410 if (tok.isNot(tok::l_paren)) return false;
411
412 Token BeforeTok = tok;
413 Token AfterTok;
414 AfterTok.startToken();
415 SourceLocation AttrLoc;
416
417 lexer.LexFromRawLexer(tok);
418 if (tok.is(tok::r_paren))
419 return false;
420
421 while (true) {
422 if (tok.isNot(tok::raw_identifier)) return false;
423 if (tok.getRawIdentifier() == fromAttr) {
424 if (!toAttr.empty()) {
425 Pass.TA.replaceText(tok.getLocation(), fromAttr, toAttr);
426 return true;
427 }
428 // We want to remove the attribute.
429 AttrLoc = tok.getLocation();
430 }
431
432 do {
433 lexer.LexFromRawLexer(tok);
434 if (AttrLoc.isValid() && AfterTok.is(tok::unknown))
435 AfterTok = tok;
436 } while (tok.isNot(tok::comma) && tok.isNot(tok::r_paren));
437 if (tok.is(tok::r_paren))
438 break;
439 if (AttrLoc.isInvalid())
440 BeforeTok = tok;
441 lexer.LexFromRawLexer(tok);
442 }
443
444 if (toAttr.empty() && AttrLoc.isValid() && AfterTok.isNot(tok::unknown)) {
445 // We want to remove the attribute.
446 if (BeforeTok.is(tok::l_paren) && AfterTok.is(tok::r_paren)) {
448 AfterTok.getLocation()));
449 } else if (BeforeTok.is(tok::l_paren) && AfterTok.is(tok::comma)) {
450 Pass.TA.remove(SourceRange(AttrLoc, AfterTok.getLocation()));
451 } else {
452 Pass.TA.remove(SourceRange(BeforeTok.getLocation(), AttrLoc));
453 }
454
455 return true;
456 }
457
458 return false;
459}
460
462 SourceLocation atLoc) {
463 if (atLoc.isMacroID())
464 return false;
465
467
468 // Break down the source location.
469 std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(atLoc);
470
471 // Try to load the file buffer.
472 bool invalidTemp = false;
473 StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
474 if (invalidTemp)
475 return false;
476
477 const char *tokenBegin = file.data() + locInfo.second;
478
479 // Lex from the start of the given location.
480 Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
482 file.begin(), tokenBegin, file.end());
483 Token tok;
484 lexer.LexFromRawLexer(tok);
485 if (tok.isNot(tok::at)) return false;
486 lexer.LexFromRawLexer(tok);
487 if (tok.isNot(tok::raw_identifier)) return false;
488 if (tok.getRawIdentifier() != "property")
489 return false;
490 lexer.LexFromRawLexer(tok);
491
492 if (tok.isNot(tok::l_paren)) {
493 Pass.TA.insert(tok.getLocation(), std::string("(") + attr.str() + ") ");
494 return true;
495 }
496
497 lexer.LexFromRawLexer(tok);
498 if (tok.is(tok::r_paren)) {
499 Pass.TA.insert(tok.getLocation(), attr);
500 return true;
501 }
502
503 if (tok.isNot(tok::raw_identifier)) return false;
504
505 Pass.TA.insert(tok.getLocation(), std::string(attr) + ", ");
506 return true;
507}
508
511 I = traversers_begin(), E = traversers_end(); I != E; ++I)
512 (*I)->traverseTU(*this);
513
514 ASTTransform(*this).TraverseDecl(TU);
515}
516
518 ASTContext &Ctx = pass.Ctx;
519 TransformActions &TA = pass.TA;
521 Selector FinalizeSel =
522 Ctx.Selectors.getNullarySelector(&pass.Ctx.Idents.get("finalize"));
523
525 impl_iterator;
526 for (impl_iterator I = impl_iterator(DC->decls_begin()),
527 E = impl_iterator(DC->decls_end()); I != E; ++I) {
528 for (const auto *MD : I->instance_methods()) {
529 if (!MD->hasBody())
530 continue;
531
532 if (MD->isInstanceMethod() && MD->getSelector() == FinalizeSel) {
533 const ObjCMethodDecl *FinalizeM = MD;
534 Transaction Trans(TA);
535 TA.insert(FinalizeM->getSourceRange().getBegin(),
536 "#if !__has_feature(objc_arc)\n");
538 const SourceManager &SM = pass.Ctx.getSourceManager();
539 const LangOptions &LangOpts = pass.Ctx.getLangOpts();
540 bool Invalid;
541 std::string str = "\n#endif\n";
544 SM, LangOpts, &Invalid);
545 TA.insertAfterToken(FinalizeM->getSourceRange().getEnd(), str);
546
547 break;
548 }
549 }
550 }
551}
552
553//===----------------------------------------------------------------------===//
554// getAllTransformations.
555//===----------------------------------------------------------------------===//
556
557static void traverseAST(MigrationPass &pass) {
558 MigrationContext MigrateCtx(pass);
559
560 if (pass.isGCMigration()) {
562 MigrateCtx.addTraverser(new GCAttrsTraverser());
563 }
564 MigrateCtx.addTraverser(new PropertyRewriteTraverser());
566 MigrateCtx.addTraverser(new ProtectedScopeTraverser());
567
568 MigrateCtx.traverse(pass.Ctx.getTranslationUnitDecl());
569}
570
576 makeAssignARCSafe(pass);
578 checkAPIUses(pass);
579 traverseAST(pass);
580}
581
582std::vector<TransformFn> arcmt::getAllTransformations(
583 LangOptions::GCMode OrigGCMode,
584 bool NoFinalizeRemoval) {
585 std::vector<TransformFn> transforms;
586
587 if (OrigGCMode == LangOptions::GCOnly && NoFinalizeRemoval)
588 transforms.push_back(GCRewriteFinalize);
589 transforms.push_back(independentTransforms);
590 // This depends on previous transformations removing various expressions.
591 transforms.push_back(removeEmptyStatementsAndDeallocFinalize);
592
593 return transforms;
594}
Defines the clang::ASTContext interface.
#define SM(sm)
Definition: Cuda.cpp:84
Defines the clang::Preprocessor interface.
This file declares semantic analysis for Objective-C.
Defines the SourceManager interface.
static void traverseAST(MigrationPass &pass)
Definition: Transforms.cpp:557
static void independentTransforms(MigrationPass &pass)
Definition: Transforms.cpp:571
static void GCRewriteFinalize(MigrationPass &pass)
Definition: Transforms.cpp:517
std::string Label
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:185
SourceManager & getSourceManager()
Definition: ASTContext.h:708
TranslationUnitDecl * getTranslationUnitDecl() const
Definition: ASTContext.h:1076
IdentifierTable & Idents
Definition: ASTContext.h:647
const LangOptions & getLangOpts() const
Definition: ASTContext.h:778
SelectorTable & Selectors
Definition: ASTContext.h:648
QualType getBaseElementType(const ArrayType *VAT) const
Return the innermost element type of an array type.
const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:760
An attributed type is a type to which a type attribute has been applied.
Definition: Type.h:5620
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:3840
Expr * getRHS() const
Definition: Expr.h:3891
Opcode getOpcode() const
Definition: Expr.h:3884
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2820
CastKind getCastKind() const
Definition: Expr.h:3527
Expr * getSubExpr()
Definition: Expr.h:3533
static CharSourceRange getTokenRange(SourceRange R)
CompoundStmt - This represents a group of statements like { stmt stmt }.
Definition: Stmt.h:1606
ConditionalOperator - The ?: ternary operator.
Definition: Expr.h:4179
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext,...
Definition: DeclBase.h:2342
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1432
decl_iterator decls_end() const
Definition: DeclBase.h:2324
decl_iterator decls_begin() const
Definition: DeclBase.cpp:1594
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:1260
ValueDecl * getDecl()
Definition: Expr.h:1328
DoStmt - This represents a 'do/while' stmt.
Definition: Stmt.h:2725
This represents one expression.
Definition: Expr.h:110
Expr * IgnoreParenCasts() LLVM_READONLY
Skip past any parentheses and casts which might surround this expression until reaching a fixed point...
Definition: Expr.cpp:3064
Expr * IgnoreImplicit() LLVM_READONLY
Skip past any implicit AST nodes which might surround this expression until reaching a fixed point.
Definition: Expr.cpp:3047
bool HasSideEffects(const ASTContext &Ctx, bool IncludePossibleEffects=true) const
HasSideEffects - This routine returns true for all those expressions which have any effect other than...
Definition: Expr.cpp:3556
ForStmt - This represents a 'for (init;cond;inc)' stmt.
Definition: Stmt.h:2781
FullExpr - Represents a "full-expression" node.
Definition: Expr.h:1039
Represents a function declaration or definition.
Definition: Decl.h:1971
IdentifierInfo & get(StringRef Name)
Return the identifier token info for the specified named identifier.
IfStmt - This represents an if/then/else.
Definition: Stmt.h:2138
ImplicitCastExpr - Allows us to explicitly represent implicit type conversions, which have no direct ...
Definition: Expr.h:3655
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:461
Lexer - This provides a simple interface that turns a text buffer into a stream of tokens.
Definition: Lexer.h:78
static StringRef getSourceText(CharSourceRange Range, const SourceManager &SM, const LangOptions &LangOpts, bool *Invalid=nullptr)
Returns a string for the source that the range encompasses.
Definition: Lexer.cpp:1024
bool LexFromRawLexer(Token &Result)
LexFromRawLexer - Lex a token from a designated raw lexer (one with no associated preprocessor object...
Definition: Lexer.h:236
static bool isAtEndOfMacroExpansion(SourceLocation loc, const SourceManager &SM, const LangOptions &LangOpts, SourceLocation *MacroEnd=nullptr)
Returns true if the given MacroID location points at the last token of the macro expansion.
Definition: Lexer.cpp:894
static SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset, const SourceManager &SM, const LangOptions &LangOpts)
Computes the source location just past the end of the token at this source location.
Definition: Lexer.cpp:850
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2594
Represents an ObjC class declaration.
Definition: DeclObjC.h:1153
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:945
Expr * getInstanceReceiver()
Returns the object expression (receiver) for an instance message, or null for a message that is not a...
Definition: ExprObjC.h:1260
ObjCMethodFamily getMethodFamily() const
Definition: ExprObjC.h:1375
@ SuperInstance
The receiver is the instance of the superclass object.
Definition: ExprObjC.h:959
@ Instance
The receiver is an object instance.
Definition: ExprObjC.h:953
ReceiverKind getReceiverKind() const
Determine the kind of receiver that this message is being sent to.
Definition: ExprObjC.h:1234
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:140
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclObjC.h:284
Represents a pointer to an Objective C object.
Definition: Type.h:7024
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:3155
bool isMacroDefined(StringRef Id)
A (possibly-)qualified type.
Definition: Type.h:940
A class that does preorder or postorder depth-first traversal on the entire Clang AST and visits each...
Base for LValueReferenceType and RValueReferenceType.
Definition: Type.h:3396
Selector getNullarySelector(const IdentifierInfo *ID)
Smart pointer class that efficiently represents Objective-C method names.
Preprocessor & PP
Definition: Sema.h:872
Encodes a location in the source.
bool isValid() const
Return true if this is a valid SourceLocation object.
SourceLocation getLocWithOffset(IntTy Offset) const
Return a source location with the specified offset from this SourceLocation.
This class handles loading and caching of source files into memory.
A trivial tuple used to represent a source range.
SourceLocation getEnd() const
SourceLocation getBegin() const
StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}).
Definition: Expr.h:4383
CompoundStmt * getSubStmt()
Definition: Expr.h:4400
Stmt - This represents one statement.
Definition: Stmt.h:84
const llvm::Triple & getTriple() const
Returns the target triple of the primary target.
Definition: TargetInfo.h:1256
Token - This structure provides full information about a lexed token.
Definition: Token.h:36
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file.
Definition: Token.h:132
bool is(tok::TokenKind K) const
is/isNot - Predicates to check if this token is a specific kind, as in "if (Tok.is(tok::l_brace)) {....
Definition: Token.h:99
bool isNot(tok::TokenKind K) const
Definition: Token.h:100
void startToken()
Reset all flags to cleared.
Definition: Token.h:177
StringRef getRawIdentifier() const
getRawIdentifier - For a raw identifier token (i.e., an identifier lexed in raw mode),...
Definition: Token.h:213
The top declaration context.
Definition: Decl.h:84
bool isArrayType() const
Definition: Type.h:7694
QualType getPointeeType() const
If this is a pointer, ObjC object pointer, or block pointer, this returns the respective pointee.
Definition: Type.cpp:705
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:8146
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:706
WhileStmt - This represents a 'while' stmt.
Definition: Stmt.h:2584
bool isGCMigration() const
Definition: Internals.h:165
TransformActions & TA
Definition: Internals.h:152
void insertAfterToken(SourceLocation loc, StringRef text)
void insert(SourceLocation loc, StringRef text)
void remove(SourceRange range)
void replaceText(SourceLocation loc, StringRef text, StringRef replacementText)
void traverse(TranslationUnitDecl *TU)
Definition: Transforms.cpp:509
bool addPropertyAttribute(StringRef attr, SourceLocation atLoc)
Definition: Transforms.cpp:461
traverser_iterator traversers_begin()
Definition: Transforms.h:107
std::vector< ASTTraverser * >::iterator traverser_iterator
Definition: Transforms.h:106
bool rewritePropertyAttribute(StringRef fromAttr, StringRef toAttr, SourceLocation atLoc)
Definition: Transforms.cpp:379
void addTraverser(ASTTraverser *traverser)
Definition: Transforms.h:110
traverser_iterator traversers_end()
Definition: Transforms.h:108
Defines the clang::TargetInfo interface.
StringRef getNilString(MigrationPass &Pass)
Returns "nil" or "0" if 'nil' macro is not actually defined.
Definition: Transforms.cpp:208
bool hasSideEffects(Expr *E, ASTContext &Ctx)
Definition: Transforms.cpp:167
void removeRetainReleaseDeallocFinalize(MigrationPass &pass)
bool canApplyWeak(ASTContext &Ctx, QualType type, bool AllowOnUnknownClass=false)
Determine whether we can add weak to the given type.
Definition: Transforms.cpp:39
void removeEmptyStatementsAndDeallocFinalize(MigrationPass &pass)
void collectRefs(ValueDecl *D, Stmt *S, ExprSet &refs)
Definition: Transforms.cpp:304
void clearRefsIn(Stmt *S, ExprSet &refs)
Definition: Transforms.cpp:300
void rewriteAutoreleasePool(MigrationPass &pass)
void rewriteUnbridgedCasts(MigrationPass &pass)
void rewriteUnusedInitDelegate(MigrationPass &pass)
bool isPlusOneAssign(const BinaryOperator *E)
Definition: Transforms.cpp:68
void checkAPIUses(MigrationPass &pass)
bool isPlusOne(const Expr *E)
Definition: Transforms.cpp:75
SourceLocation findLocationAfterSemi(SourceLocation loc, ASTContext &Ctx, bool IsDecl=false)
'Loc' is the end of a statement range.
Definition: Transforms.cpp:117
bool isGlobalVar(Expr *E)
Definition: Transforms.cpp:196
void removeZeroOutPropsInDeallocFinalize(MigrationPass &pass)
SourceLocation findSemiAfterLocation(SourceLocation loc, ASTContext &Ctx, bool IsDecl=false)
'Loc' is the end of a statement range.
Definition: Transforms.cpp:129
void makeAssignARCSafe(MigrationPass &pass)
void collectRemovables(Stmt *S, ExprSet &exprs)
Definition: Transforms.cpp:308
std::vector< TransformFn > getAllTransformations(LangOptions::GCMode OrigGCMode, bool NoFinalizeRemoval)
Definition: Transforms.cpp:582
const internal::VariadicAllOfMatcher< Attr > attr
Matches attributes.
const internal::VariadicAllOfMatcher< Type > type
Matches Types in the clang AST.
bool isRefType(QualType RetTy, StringRef Prefix, StringRef Name=StringRef())
The JSON file list parser is used to communicate input to InstallAPI.
@ OMF_autorelease
const FunctionProtoType * T
@ Class
The "class" keyword introduces the elaborated-type-specifier.