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Steve Naroffb29b4272008-04-14 22:03:09 +00001//===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===//
Chris Lattner77cd2a02007-10-11 00:43:27 +00002//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner0bc735f2007-12-29 19:59:25 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Chris Lattner77cd2a02007-10-11 00:43:27 +00007//
8//===----------------------------------------------------------------------===//
9//
10// Hacks and fun related to the code rewriter.
11//
12//===----------------------------------------------------------------------===//
13
Daniel Dunbar9b414d32010-06-15 17:48:49 +000014#include "clang/Rewrite/ASTConsumers.h"
Chris Lattner8a12c272007-10-11 18:38:32 +000015#include "clang/Rewrite/Rewriter.h"
Chris Lattner77cd2a02007-10-11 00:43:27 +000016#include "clang/AST/AST.h"
17#include "clang/AST/ASTConsumer.h"
Steve Naroff8599e7a2008-12-08 16:43:47 +000018#include "clang/AST/ParentMap.h"
Chris Lattner8a12c272007-10-11 18:38:32 +000019#include "clang/Basic/SourceManager.h"
Steve Naroffebf2b562007-10-23 23:50:29 +000020#include "clang/Basic/IdentifierTable.h"
Chris Lattner07506182007-11-30 22:53:43 +000021#include "clang/Basic/Diagnostic.h"
Chris Lattner26de4652007-12-02 01:13:47 +000022#include "clang/Lex/Lexer.h"
Benjamin Kramer6cb7c1a2009-08-23 12:08:50 +000023#include "llvm/Support/MemoryBuffer.h"
24#include "llvm/Support/raw_ostream.h"
Chris Lattner158ecb92007-10-25 17:07:24 +000025#include "llvm/ADT/StringExtras.h"
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +000026#include "llvm/ADT/SmallPtrSet.h"
Ted Kremeneka95d3752008-09-13 05:16:45 +000027#include "llvm/ADT/OwningPtr.h"
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +000028#include "llvm/ADT/DenseSet.h"
Fariborz Jahanian72952fc2010-03-01 23:36:21 +000029
Chris Lattner77cd2a02007-10-11 00:43:27 +000030using namespace clang;
Chris Lattner158ecb92007-10-25 17:07:24 +000031using llvm::utostr;
Chris Lattner77cd2a02007-10-11 00:43:27 +000032
Chris Lattner77cd2a02007-10-11 00:43:27 +000033namespace {
Steve Naroffb29b4272008-04-14 22:03:09 +000034 class RewriteObjC : public ASTConsumer {
Fariborz Jahanian73e437b2009-12-23 21:18:41 +000035 enum {
36 BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)),
37 block, ... */
38 BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */
39 BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the
40 __block variable */
41 BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy
42 helpers */
43 BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
44 support routines */
45 BLOCK_BYREF_CURRENT_MAX = 256
46 };
47
48 enum {
49 BLOCK_NEEDS_FREE = (1 << 24),
50 BLOCK_HAS_COPY_DISPOSE = (1 << 25),
51 BLOCK_HAS_CXX_OBJ = (1 << 26),
52 BLOCK_IS_GC = (1 << 27),
53 BLOCK_IS_GLOBAL = (1 << 28),
54 BLOCK_HAS_DESCRIPTOR = (1 << 29)
55 };
56
Chris Lattner2c64b7b2007-10-16 21:07:07 +000057 Rewriter Rewrite;
Chris Lattnere365c502007-11-30 22:25:36 +000058 Diagnostic &Diags;
Steve Naroff4f943c22008-03-10 20:43:59 +000059 const LangOptions &LangOpts;
Steve Narofff69cc5d2008-01-30 19:17:43 +000060 unsigned RewriteFailedDiag;
Steve Naroff8c565152008-12-05 17:03:39 +000061 unsigned TryFinallyContainsReturnDiag;
Mike Stump1eb44332009-09-09 15:08:12 +000062
Chris Lattner01c57482007-10-17 22:35:30 +000063 ASTContext *Context;
Chris Lattner77cd2a02007-10-11 00:43:27 +000064 SourceManager *SM;
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +000065 TranslationUnitDecl *TUDecl;
Chris Lattner2b2453a2009-01-17 06:22:33 +000066 FileID MainFileID;
Chris Lattner26de4652007-12-02 01:13:47 +000067 const char *MainFileStart, *MainFileEnd;
Chris Lattner2c64b7b2007-10-16 21:07:07 +000068 SourceLocation LastIncLoc;
Mike Stump1eb44332009-09-09 15:08:12 +000069
Ted Kremeneka526c5c2008-01-07 19:49:32 +000070 llvm::SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
71 llvm::SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
72 llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
Steve Narofffbfe8252008-05-06 18:26:51 +000073 llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
Ted Kremeneka526c5c2008-01-07 19:49:32 +000074 llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCForwardDecls;
75 llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +000076 llvm::SmallVector<Stmt *, 32> Stmts;
77 llvm::SmallVector<int, 8> ObjCBcLabelNo;
Steve Naroff621edce2009-04-29 16:37:50 +000078 // Remember all the @protocol(<expr>) expressions.
79 llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +000080
81 llvm::DenseSet<uint64_t> CopyDestroyCache;
82
Steve Naroffd82a9ab2008-03-15 00:55:56 +000083 unsigned NumObjCStringLiterals;
Mike Stump1eb44332009-09-09 15:08:12 +000084
Steve Naroffebf2b562007-10-23 23:50:29 +000085 FunctionDecl *MsgSendFunctionDecl;
Steve Naroff874e2322007-11-15 10:28:18 +000086 FunctionDecl *MsgSendSuperFunctionDecl;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +000087 FunctionDecl *MsgSendStretFunctionDecl;
88 FunctionDecl *MsgSendSuperStretFunctionDecl;
Fariborz Jahanianacb49772007-12-03 21:26:48 +000089 FunctionDecl *MsgSendFpretFunctionDecl;
Steve Naroffebf2b562007-10-23 23:50:29 +000090 FunctionDecl *GetClassFunctionDecl;
Steve Naroff9bcb5fc2007-12-07 03:50:46 +000091 FunctionDecl *GetMetaClassFunctionDecl;
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +000092 FunctionDecl *GetSuperClassFunctionDecl;
Steve Naroff934f2762007-10-24 22:48:43 +000093 FunctionDecl *SelGetUidFunctionDecl;
Steve Naroff96984642007-11-08 14:30:50 +000094 FunctionDecl *CFStringFunctionDecl;
Steve Naroffc0a123c2008-03-11 17:37:02 +000095 FunctionDecl *SuperContructorFunctionDecl;
Mike Stump1eb44332009-09-09 15:08:12 +000096
Steve Naroffbeaf2992007-11-03 11:27:19 +000097 // ObjC string constant support.
Steve Naroff248a7532008-04-15 22:42:06 +000098 VarDecl *ConstantStringClassReference;
Steve Naroffbeaf2992007-11-03 11:27:19 +000099 RecordDecl *NSStringRecord;
Mike Stump1eb44332009-09-09 15:08:12 +0000100
Fariborz Jahanianb586cce2008-01-16 00:09:11 +0000101 // ObjC foreach break/continue generation support.
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +0000102 int BcLabelCount;
Mike Stump1eb44332009-09-09 15:08:12 +0000103
Steve Naroff874e2322007-11-15 10:28:18 +0000104 // Needed for super.
Steve Naroff54055232008-10-27 17:20:55 +0000105 ObjCMethodDecl *CurMethodDef;
Steve Naroff874e2322007-11-15 10:28:18 +0000106 RecordDecl *SuperStructDecl;
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000107 RecordDecl *ConstantStringDecl;
Mike Stump1eb44332009-09-09 15:08:12 +0000108
Steve Naroff621edce2009-04-29 16:37:50 +0000109 TypeDecl *ProtocolTypeDecl;
110 QualType getProtocolType();
Mike Stump1eb44332009-09-09 15:08:12 +0000111
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000112 // Needed for header files being rewritten
113 bool IsHeader;
Mike Stump1eb44332009-09-09 15:08:12 +0000114
Steve Naroffa7b402d2008-03-28 22:26:09 +0000115 std::string InFileName;
Eli Friedman66d6f042009-05-18 22:20:00 +0000116 llvm::raw_ostream* OutFile;
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000117
118 bool SilenceRewriteMacroWarning;
Fariborz Jahanianf292fcf2010-01-07 22:51:18 +0000119 bool objc_impl_method;
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000120
Steve Naroffba92b2e2008-03-27 22:29:16 +0000121 std::string Preamble;
Steve Naroff54055232008-10-27 17:20:55 +0000122
123 // Block expressions.
124 llvm::SmallVector<BlockExpr *, 32> Blocks;
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +0000125 llvm::SmallVector<int, 32> InnerDeclRefsCount;
126 llvm::SmallVector<BlockDeclRefExpr *, 32> InnerDeclRefs;
127
Steve Naroff54055232008-10-27 17:20:55 +0000128 llvm::SmallVector<BlockDeclRefExpr *, 32> BlockDeclRefs;
Mike Stump1eb44332009-09-09 15:08:12 +0000129
Steve Naroff54055232008-10-27 17:20:55 +0000130 // Block related declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +0000131 llvm::SmallVector<ValueDecl *, 8> BlockByCopyDecls;
132 llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet;
133 llvm::SmallVector<ValueDecl *, 8> BlockByRefDecls;
134 llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet;
Fariborz Jahaniana73165e2010-01-14 23:05:52 +0000135 llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
Steve Naroff54055232008-10-27 17:20:55 +0000136 llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +0000137 llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls;
138
Steve Naroff54055232008-10-27 17:20:55 +0000139 llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
140
Steve Naroffc77a6362008-12-04 16:24:46 +0000141 // This maps a property to it's assignment statement.
142 llvm::DenseMap<ObjCPropertyRefExpr *, BinaryOperator *> PropSetters;
Steve Naroff8599e7a2008-12-08 16:43:47 +0000143 // This maps a property to it's synthesied message expression.
144 // This allows us to rewrite chained getters (e.g. o.a.b.c).
145 llvm::DenseMap<ObjCPropertyRefExpr *, Stmt *> PropGetters;
Mike Stump1eb44332009-09-09 15:08:12 +0000146
Steve Naroff4c3580e2008-12-04 23:50:32 +0000147 // This maps an original source AST to it's rewritten form. This allows
148 // us to avoid rewriting the same node twice (which is very uncommon).
149 // This is needed to support some of the exotic property rewriting.
150 llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;
Steve Naroff15f081d2008-12-03 00:56:33 +0000151
Steve Naroff54055232008-10-27 17:20:55 +0000152 FunctionDecl *CurFunctionDef;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000153 FunctionDecl *CurFunctionDeclToDeclareForBlock;
Steve Naroff8e2f57a2008-10-29 18:15:37 +0000154 VarDecl *GlobalVarDecl;
Mike Stump1eb44332009-09-09 15:08:12 +0000155
Steve Naroffb619d952008-12-09 12:56:34 +0000156 bool DisableReplaceStmt;
Mike Stump1eb44332009-09-09 15:08:12 +0000157
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +0000158 static const int OBJC_ABI_VERSION =7 ;
Chris Lattner77cd2a02007-10-11 00:43:27 +0000159 public:
Ted Kremeneke3a61982008-05-31 20:11:04 +0000160 virtual void Initialize(ASTContext &context);
161
Chris Lattnerf04da132007-10-24 17:06:59 +0000162 // Top Level Driver code.
Chris Lattner682bf922009-03-29 16:50:03 +0000163 virtual void HandleTopLevelDecl(DeclGroupRef D) {
164 for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I)
165 HandleTopLevelSingleDecl(*I);
166 }
167 void HandleTopLevelSingleDecl(Decl *D);
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000168 void HandleDeclInMainFile(Decl *D);
Eli Friedman66d6f042009-05-18 22:20:00 +0000169 RewriteObjC(std::string inFile, llvm::raw_ostream *OS,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000170 Diagnostic &D, const LangOptions &LOpts,
171 bool silenceMacroWarn);
Ted Kremeneke452e0f2008-08-08 04:15:52 +0000172
173 ~RewriteObjC() {}
Mike Stump1eb44332009-09-09 15:08:12 +0000174
Chris Lattnerdacbc5d2009-03-28 04:11:33 +0000175 virtual void HandleTranslationUnit(ASTContext &C);
Mike Stump1eb44332009-09-09 15:08:12 +0000176
Fariborz Jahanian88906cd2010-02-05 16:43:40 +0000177 void ReplaceStmt(Stmt *Old, Stmt *New) {
Steve Naroff4c3580e2008-12-04 23:50:32 +0000178 Stmt *ReplacingStmt = ReplacedNodes[Old];
Mike Stump1eb44332009-09-09 15:08:12 +0000179
Steve Naroff4c3580e2008-12-04 23:50:32 +0000180 if (ReplacingStmt)
181 return; // We can't rewrite the same node twice.
Chris Lattnerdcbc5b02008-01-31 19:37:57 +0000182
Steve Naroffb619d952008-12-09 12:56:34 +0000183 if (DisableReplaceStmt)
184 return; // Used when rewriting the assignment of a property setter.
185
Steve Naroff4c3580e2008-12-04 23:50:32 +0000186 // If replacement succeeded or warning disabled return with no warning.
Fariborz Jahanian88906cd2010-02-05 16:43:40 +0000187 if (!Rewrite.ReplaceStmt(Old, New)) {
Steve Naroff4c3580e2008-12-04 23:50:32 +0000188 ReplacedNodes[Old] = New;
189 return;
190 }
191 if (SilenceRewriteMacroWarning)
192 return;
Chris Lattner0a14eee2008-11-18 07:04:44 +0000193 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
194 << Old->getSourceRange();
Chris Lattnerdcbc5b02008-01-31 19:37:57 +0000195 }
Steve Naroffb619d952008-12-09 12:56:34 +0000196
197 void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
198 // Measaure the old text.
199 int Size = Rewrite.getRangeSize(SrcRange);
200 if (Size == -1) {
201 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
202 << Old->getSourceRange();
203 return;
204 }
205 // Get the new text.
206 std::string SStr;
207 llvm::raw_string_ostream S(SStr);
Chris Lattnere4f21422009-06-30 01:26:17 +0000208 New->printPretty(S, *Context, 0, PrintingPolicy(LangOpts));
Steve Naroffb619d952008-12-09 12:56:34 +0000209 const std::string &Str = S.str();
210
211 // If replacement succeeded or warning disabled return with no warning.
Daniel Dunbard7407dc2009-08-19 19:10:30 +0000212 if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
Steve Naroffb619d952008-12-09 12:56:34 +0000213 ReplacedNodes[Old] = New;
214 return;
215 }
216 if (SilenceRewriteMacroWarning)
217 return;
218 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
219 << Old->getSourceRange();
220 }
221
Benjamin Kramerd999b372010-02-14 14:14:16 +0000222 void InsertText(SourceLocation Loc, llvm::StringRef Str,
Steve Naroffba92b2e2008-03-27 22:29:16 +0000223 bool InsertAfter = true) {
Chris Lattneraadaf782008-01-31 19:51:04 +0000224 // If insertion succeeded or warning disabled return with no warning.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000225 if (!Rewrite.InsertText(Loc, Str, InsertAfter) ||
Chris Lattnerf3dd57e2008-01-31 19:42:41 +0000226 SilenceRewriteMacroWarning)
227 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000228
Chris Lattnerf3dd57e2008-01-31 19:42:41 +0000229 Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
230 }
Mike Stump1eb44332009-09-09 15:08:12 +0000231
Chris Lattneraadaf782008-01-31 19:51:04 +0000232 void ReplaceText(SourceLocation Start, unsigned OrigLength,
Benjamin Kramerd999b372010-02-14 14:14:16 +0000233 llvm::StringRef Str) {
Chris Lattneraadaf782008-01-31 19:51:04 +0000234 // If removal succeeded or warning disabled return with no warning.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000235 if (!Rewrite.ReplaceText(Start, OrigLength, Str) ||
Chris Lattneraadaf782008-01-31 19:51:04 +0000236 SilenceRewriteMacroWarning)
237 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000238
Chris Lattneraadaf782008-01-31 19:51:04 +0000239 Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
240 }
Mike Stump1eb44332009-09-09 15:08:12 +0000241
Chris Lattnerf04da132007-10-24 17:06:59 +0000242 // Syntactic Rewriting.
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000243 void RewriteInclude();
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000244 void RewriteForwardClassDecl(ObjCClassDecl *Dcl);
Steve Naroffa0876e82008-12-02 17:36:43 +0000245 void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
246 ObjCImplementationDecl *IMD,
247 ObjCCategoryImplDecl *CID);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000248 void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
Douglas Gregor4afa39d2009-01-20 01:17:11 +0000249 void RewriteImplementationDecl(Decl *Dcl);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000250 void RewriteObjCMethodDecl(ObjCMethodDecl *MDecl, std::string &ResultStr);
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000251 void RewriteTypeIntoString(QualType T, std::string &ResultStr,
252 const FunctionType *&FPRetType);
Fariborz Jahaniana73165e2010-01-14 23:05:52 +0000253 void RewriteByRefString(std::string &ResultStr, const std::string &Name,
254 ValueDecl *VD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000255 void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
256 void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
257 void RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *Dcl);
258 void RewriteMethodDeclaration(ObjCMethodDecl *Method);
Steve Naroff6327e0d2009-01-11 01:06:09 +0000259 void RewriteProperty(ObjCPropertyDecl *prop);
Steve Naroff09b266e2007-10-30 23:14:51 +0000260 void RewriteFunctionDecl(FunctionDecl *FD);
Daniel Dunbarfa297fb2010-06-30 19:16:53 +0000261 void RewriteBlockPointerType(std::string& Str, QualType Type);
262 void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD);
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000263 void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000264 void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +0000265 void RewriteTypeOfDecl(VarDecl *VD);
Steve Naroff4f95b752008-07-29 18:15:38 +0000266 void RewriteObjCQualifiedInterfaceTypes(Expr *E);
Steve Naroffd5255f52007-11-01 13:24:47 +0000267 bool needToScanForQualifiers(QualType T);
Steve Naroff874e2322007-11-15 10:28:18 +0000268 QualType getSuperStructType();
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000269 QualType getConstantStringStructType();
Fariborz Jahanian1f906222010-05-25 15:56:08 +0000270 QualType convertFunctionTypeOfBlocks(const FunctionType *FT);
Steve Naroffbaf58c32008-05-31 14:15:04 +0000271 bool BufferContainsPPDirectives(const char *startBuf, const char *endBuf);
Mike Stump1eb44332009-09-09 15:08:12 +0000272
Chris Lattnerf04da132007-10-24 17:06:59 +0000273 // Expression Rewriting.
Steve Narofff3473a72007-11-09 15:20:18 +0000274 Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
Steve Naroffc77a6362008-12-04 16:24:46 +0000275 void CollectPropertySetters(Stmt *S);
Mike Stump1eb44332009-09-09 15:08:12 +0000276
Steve Naroff8599e7a2008-12-08 16:43:47 +0000277 Stmt *CurrentBody;
278 ParentMap *PropParentMap; // created lazily.
Mike Stump1eb44332009-09-09 15:08:12 +0000279
Chris Lattnere64b7772007-10-24 16:57:36 +0000280 Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +0000281 Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV, SourceLocation OrigStart,
282 bool &replaced);
283 Stmt *RewriteObjCNestedIvarRefExpr(Stmt *S, bool &replaced);
Steve Naroffc77a6362008-12-04 16:24:46 +0000284 Stmt *RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr);
Mike Stump1eb44332009-09-09 15:08:12 +0000285 Stmt *RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
Steve Naroffb619d952008-12-09 12:56:34 +0000286 SourceRange SrcRange);
Steve Naroffb42f8412007-11-05 14:50:49 +0000287 Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
Chris Lattnere64b7772007-10-24 16:57:36 +0000288 Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
Steve Naroffbeaf2992007-11-03 11:27:19 +0000289 Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +0000290 Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
Steve Naroffb85e77a2009-12-05 21:43:12 +0000291 void WarnAboutReturnGotoStmts(Stmt *S);
292 void HasReturnStmts(Stmt *S, bool &hasReturns);
293 void RewriteTryReturnStmts(Stmt *S);
294 void RewriteSyncReturnStmts(Stmt *S, std::string buf);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000295 Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
Fariborz Jahaniana0f55792008-01-29 22:59:37 +0000296 Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000297 Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
Chris Lattner338d1e22008-01-31 05:10:40 +0000298 Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
299 SourceLocation OrigEnd);
Mike Stump1eb44332009-09-09 15:08:12 +0000300 CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
Fariborz Jahanian1d35b162010-02-22 20:48:10 +0000301 Expr **args, unsigned nargs,
302 SourceLocation StartLoc=SourceLocation(),
303 SourceLocation EndLoc=SourceLocation());
304 Stmt *SynthMessageExpr(ObjCMessageExpr *Exp,
305 SourceLocation StartLoc=SourceLocation(),
306 SourceLocation EndLoc=SourceLocation());
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +0000307 Stmt *RewriteBreakStmt(BreakStmt *S);
308 Stmt *RewriteContinueStmt(ContinueStmt *S);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +0000309 void SynthCountByEnumWithState(std::string &buf);
Mike Stump1eb44332009-09-09 15:08:12 +0000310
Steve Naroff09b266e2007-10-30 23:14:51 +0000311 void SynthMsgSendFunctionDecl();
Steve Naroff874e2322007-11-15 10:28:18 +0000312 void SynthMsgSendSuperFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +0000313 void SynthMsgSendStretFunctionDecl();
Fariborz Jahanianacb49772007-12-03 21:26:48 +0000314 void SynthMsgSendFpretFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +0000315 void SynthMsgSendSuperStretFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +0000316 void SynthGetClassFunctionDecl();
Steve Naroff9bcb5fc2007-12-07 03:50:46 +0000317 void SynthGetMetaClassFunctionDecl();
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +0000318 void SynthGetSuperClassFunctionDecl();
Fariborz Jahaniana70711b2007-12-04 21:47:40 +0000319 void SynthSelGetUidFunctionDecl();
Steve Naroffc0a123c2008-03-11 17:37:02 +0000320 void SynthSuperContructorFunctionDecl();
Mike Stump1eb44332009-09-09 15:08:12 +0000321
Chris Lattnerf04da132007-10-24 17:06:59 +0000322 // Metadata emission.
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000323 void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +0000324 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000325
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000326 void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +0000327 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000328
Douglas Gregor653f1b12009-04-23 01:02:12 +0000329 template<typename MethodIterator>
330 void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
331 MethodIterator MethodEnd,
Fariborz Jahanian8e991ba2007-10-25 00:14:44 +0000332 bool IsInstanceMethod,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000333 llvm::StringRef prefix,
334 llvm::StringRef ClassName,
Chris Lattner158ecb92007-10-25 17:07:24 +0000335 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000336
Steve Naroff621edce2009-04-29 16:37:50 +0000337 void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000338 llvm::StringRef prefix,
339 llvm::StringRef ClassName,
Steve Naroff621edce2009-04-29 16:37:50 +0000340 std::string &Result);
341 void RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Prots,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000342 llvm::StringRef prefix,
343 llvm::StringRef ClassName,
Steve Naroff621edce2009-04-29 16:37:50 +0000344 std::string &Result);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000345 void SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +0000346 std::string &Result);
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000347 void SynthesizeIvarOffsetComputation(ObjCContainerDecl *IDecl,
Mike Stump1eb44332009-09-09 15:08:12 +0000348 ObjCIvarDecl *ivar,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +0000349 std::string &Result);
Steve Narofface66252008-11-13 20:07:04 +0000350 void RewriteImplementations();
351 void SynthesizeMetaDataIntoBuffer(std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000352
Steve Naroff54055232008-10-27 17:20:55 +0000353 // Block rewriting.
Mike Stump1eb44332009-09-09 15:08:12 +0000354 void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);
Steve Naroff54055232008-10-27 17:20:55 +0000355 void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
Mike Stump1eb44332009-09-09 15:08:12 +0000356
Steve Naroff54055232008-10-27 17:20:55 +0000357 void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
358 void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
Mike Stump1eb44332009-09-09 15:08:12 +0000359
360 // Block specific rewrite rules.
Steve Naroff54055232008-10-27 17:20:55 +0000361 void RewriteBlockPointerDecl(NamedDecl *VD);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +0000362 void RewriteByRefVar(VarDecl *VD);
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +0000363 std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +0000364 Stmt *RewriteBlockDeclRefExpr(Expr *VD);
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +0000365 Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE);
Steve Naroff54055232008-10-27 17:20:55 +0000366 void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
Mike Stump1eb44332009-09-09 15:08:12 +0000367
368 std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000369 llvm::StringRef funcName, std::string Tag);
Mike Stump1eb44332009-09-09 15:08:12 +0000370 std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000371 llvm::StringRef funcName, std::string Tag);
Steve Naroff01aec112009-12-06 21:14:13 +0000372 std::string SynthesizeBlockImpl(BlockExpr *CE,
373 std::string Tag, std::string Desc);
374 std::string SynthesizeBlockDescriptor(std::string DescTag,
375 std::string ImplTag,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000376 int i, llvm::StringRef funcName,
Steve Naroff01aec112009-12-06 21:14:13 +0000377 unsigned hasCopy);
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +0000378 Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
Steve Naroff54055232008-10-27 17:20:55 +0000379 void SynthesizeBlockLiterals(SourceLocation FunLocStart,
Daniel Dunbar4087f272010-08-17 22:39:59 +0000380 llvm::StringRef FunName);
Steve Naroff3d7e7862009-12-05 15:55:59 +0000381 void RewriteRecordBody(RecordDecl *RD);
Mike Stump1eb44332009-09-09 15:08:12 +0000382
Steve Naroff54055232008-10-27 17:20:55 +0000383 void CollectBlockDeclRefInfo(BlockExpr *Exp);
Steve Naroff54055232008-10-27 17:20:55 +0000384 void GetBlockDeclRefExprs(Stmt *S);
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +0000385 void GetInnerBlockDeclRefExprs(Stmt *S,
386 llvm::SmallVector<BlockDeclRefExpr *, 8> &InnerBlockDeclRefs,
Fariborz Jahanian72952fc2010-03-01 23:36:21 +0000387 llvm::SmallPtrSet<const DeclContext *, 8> &InnerContexts);
Mike Stump1eb44332009-09-09 15:08:12 +0000388
Steve Naroff54055232008-10-27 17:20:55 +0000389 // We avoid calling Type::isBlockPointerType(), since it operates on the
390 // canonical type. We only care if the top-level type is a closure pointer.
Ted Kremenek8189cde2009-02-07 01:47:29 +0000391 bool isTopLevelBlockPointerType(QualType T) {
392 return isa<BlockPointerType>(T);
393 }
Mike Stump1eb44332009-09-09 15:08:12 +0000394
Fariborz Jahanian4fc84532010-05-25 17:12:52 +0000395 /// convertBlockPointerToFunctionPointer - Converts a block-pointer type
396 /// to a function pointer type and upon success, returns true; false
397 /// otherwise.
398 bool convertBlockPointerToFunctionPointer(QualType &T) {
399 if (isTopLevelBlockPointerType(T)) {
400 const BlockPointerType *BPT = T->getAs<BlockPointerType>();
401 T = Context->getPointerType(BPT->getPointeeType());
402 return true;
403 }
404 return false;
405 }
406
Steve Naroff54055232008-10-27 17:20:55 +0000407 // FIXME: This predicate seems like it would be useful to add to ASTContext.
408 bool isObjCType(QualType T) {
409 if (!LangOpts.ObjC1 && !LangOpts.ObjC2)
410 return false;
Mike Stump1eb44332009-09-09 15:08:12 +0000411
Steve Naroff54055232008-10-27 17:20:55 +0000412 QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
Mike Stump1eb44332009-09-09 15:08:12 +0000413
Steve Naroff54055232008-10-27 17:20:55 +0000414 if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
415 OCT == Context->getCanonicalType(Context->getObjCClassType()))
416 return true;
Mike Stump1eb44332009-09-09 15:08:12 +0000417
Ted Kremenek6217b802009-07-29 21:53:49 +0000418 if (const PointerType *PT = OCT->getAs<PointerType>()) {
Mike Stump1eb44332009-09-09 15:08:12 +0000419 if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
Steve Naroffd1b3c2d2009-06-17 22:40:22 +0000420 PT->getPointeeType()->isObjCQualifiedIdType())
Steve Naroff54055232008-10-27 17:20:55 +0000421 return true;
422 }
423 return false;
424 }
425 bool PointerTypeTakesAnyBlockArguments(QualType QT);
Ted Kremenek8189cde2009-02-07 01:47:29 +0000426 void GetExtentOfArgList(const char *Name, const char *&LParen,
427 const char *&RParen);
Steve Naroffb2f9e512008-11-03 23:29:32 +0000428 void RewriteCastExpr(CStyleCastExpr *CE);
Mike Stump1eb44332009-09-09 15:08:12 +0000429
Daniel Dunbar4087f272010-08-17 22:39:59 +0000430 FunctionDecl *SynthBlockInitFunctionDecl(llvm::StringRef name);
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +0000431 Stmt *SynthBlockInitExpr(BlockExpr *Exp,
432 const llvm::SmallVector<BlockDeclRefExpr *, 8> &InnerBlockDeclRefs);
Mike Stump1eb44332009-09-09 15:08:12 +0000433
Steve Naroff621edce2009-04-29 16:37:50 +0000434 void QuoteDoublequotes(std::string &From, std::string &To) {
Mike Stump1eb44332009-09-09 15:08:12 +0000435 for (unsigned i = 0; i < From.length(); i++) {
Steve Naroff621edce2009-04-29 16:37:50 +0000436 if (From[i] == '"')
437 To += "\\\"";
438 else
439 To += From[i];
440 }
441 }
Chris Lattner77cd2a02007-10-11 00:43:27 +0000442 };
John McCall9d125032010-01-15 18:39:57 +0000443
444 // Helper function: create a CStyleCastExpr with trivial type source info.
445 CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
John McCall2de56d12010-08-25 11:45:40 +0000446 CastKind Kind, Expr *E) {
John McCall9d125032010-01-15 18:39:57 +0000447 TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
John McCallf871d0c2010-08-07 06:22:56 +0000448 return CStyleCastExpr::Create(*Ctx, Ty, Kind, E, 0, TInfo,
449 SourceLocation(), SourceLocation());
John McCall9d125032010-01-15 18:39:57 +0000450 }
Chris Lattner77cd2a02007-10-11 00:43:27 +0000451}
452
Mike Stump1eb44332009-09-09 15:08:12 +0000453void RewriteObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
454 NamedDecl *D) {
Douglas Gregor72564e72009-02-26 23:50:07 +0000455 if (FunctionProtoType *fproto = dyn_cast<FunctionProtoType>(funcType)) {
Mike Stump1eb44332009-09-09 15:08:12 +0000456 for (FunctionProtoType::arg_type_iterator I = fproto->arg_type_begin(),
Steve Naroff54055232008-10-27 17:20:55 +0000457 E = fproto->arg_type_end(); I && (I != E); ++I)
Steve Naroff01f2ffa2008-12-11 21:05:33 +0000458 if (isTopLevelBlockPointerType(*I)) {
Steve Naroff54055232008-10-27 17:20:55 +0000459 // All the args are checked/rewritten. Don't call twice!
460 RewriteBlockPointerDecl(D);
461 break;
462 }
463 }
464}
465
466void RewriteObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
Ted Kremenek6217b802009-07-29 21:53:49 +0000467 const PointerType *PT = funcType->getAs<PointerType>();
Steve Naroff54055232008-10-27 17:20:55 +0000468 if (PT && PointerTypeTakesAnyBlockArguments(funcType))
Douglas Gregor72564e72009-02-26 23:50:07 +0000469 RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
Steve Naroff54055232008-10-27 17:20:55 +0000470}
471
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000472static bool IsHeaderFile(const std::string &Filename) {
473 std::string::size_type DotPos = Filename.rfind('.');
Mike Stump1eb44332009-09-09 15:08:12 +0000474
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000475 if (DotPos == std::string::npos) {
476 // no file extension
Mike Stump1eb44332009-09-09 15:08:12 +0000477 return false;
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000478 }
Mike Stump1eb44332009-09-09 15:08:12 +0000479
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000480 std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
481 // C header: .h
482 // C++ header: .hh or .H;
483 return Ext == "h" || Ext == "hh" || Ext == "H";
Mike Stump1eb44332009-09-09 15:08:12 +0000484}
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000485
Eli Friedman66d6f042009-05-18 22:20:00 +0000486RewriteObjC::RewriteObjC(std::string inFile, llvm::raw_ostream* OS,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000487 Diagnostic &D, const LangOptions &LOpts,
488 bool silenceMacroWarn)
489 : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(OS),
490 SilenceRewriteMacroWarning(silenceMacroWarn) {
Steve Naroffa7b402d2008-03-28 22:26:09 +0000491 IsHeader = IsHeaderFile(inFile);
Mike Stump1eb44332009-09-09 15:08:12 +0000492 RewriteFailedDiag = Diags.getCustomDiagID(Diagnostic::Warning,
Steve Naroffa7b402d2008-03-28 22:26:09 +0000493 "rewriting sub-expression within a macro (may not be correct)");
Mike Stump1eb44332009-09-09 15:08:12 +0000494 TryFinallyContainsReturnDiag = Diags.getCustomDiagID(Diagnostic::Warning,
Ted Kremenek8189cde2009-02-07 01:47:29 +0000495 "rewriter doesn't support user-specified control flow semantics "
496 "for @try/@finally (code may not execute properly)");
Steve Naroffa7b402d2008-03-28 22:26:09 +0000497}
498
Eli Friedmanbce831b2009-05-18 22:29:17 +0000499ASTConsumer *clang::CreateObjCRewriter(const std::string& InFile,
500 llvm::raw_ostream* OS,
Mike Stump1eb44332009-09-09 15:08:12 +0000501 Diagnostic &Diags,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000502 const LangOptions &LOpts,
503 bool SilenceRewriteMacroWarning) {
504 return new RewriteObjC(InFile, OS, Diags, LOpts, SilenceRewriteMacroWarning);
Chris Lattnere365c502007-11-30 22:25:36 +0000505}
Chris Lattner77cd2a02007-10-11 00:43:27 +0000506
Steve Naroffb29b4272008-04-14 22:03:09 +0000507void RewriteObjC::Initialize(ASTContext &context) {
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000508 Context = &context;
509 SM = &Context->getSourceManager();
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +0000510 TUDecl = Context->getTranslationUnitDecl();
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000511 MsgSendFunctionDecl = 0;
512 MsgSendSuperFunctionDecl = 0;
513 MsgSendStretFunctionDecl = 0;
514 MsgSendSuperStretFunctionDecl = 0;
515 MsgSendFpretFunctionDecl = 0;
516 GetClassFunctionDecl = 0;
517 GetMetaClassFunctionDecl = 0;
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +0000518 GetSuperClassFunctionDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000519 SelGetUidFunctionDecl = 0;
520 CFStringFunctionDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000521 ConstantStringClassReference = 0;
522 NSStringRecord = 0;
Steve Naroff54055232008-10-27 17:20:55 +0000523 CurMethodDef = 0;
524 CurFunctionDef = 0;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000525 CurFunctionDeclToDeclareForBlock = 0;
Steve Naroffb619d952008-12-09 12:56:34 +0000526 GlobalVarDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000527 SuperStructDecl = 0;
Steve Naroff621edce2009-04-29 16:37:50 +0000528 ProtocolTypeDecl = 0;
Steve Naroff9630ec52008-03-27 22:59:54 +0000529 ConstantStringDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000530 BcLabelCount = 0;
Steve Naroffc0a123c2008-03-11 17:37:02 +0000531 SuperContructorFunctionDecl = 0;
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000532 NumObjCStringLiterals = 0;
Steve Naroff68272b82008-12-08 20:01:41 +0000533 PropParentMap = 0;
534 CurrentBody = 0;
Steve Naroffb619d952008-12-09 12:56:34 +0000535 DisableReplaceStmt = false;
Fariborz Jahanianf292fcf2010-01-07 22:51:18 +0000536 objc_impl_method = false;
Mike Stump1eb44332009-09-09 15:08:12 +0000537
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000538 // Get the ID and start/end of the main file.
539 MainFileID = SM->getMainFileID();
540 const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
541 MainFileStart = MainBuf->getBufferStart();
542 MainFileEnd = MainBuf->getBufferEnd();
Mike Stump1eb44332009-09-09 15:08:12 +0000543
Chris Lattner2c78b872009-04-14 23:22:57 +0000544 Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOptions());
Mike Stump1eb44332009-09-09 15:08:12 +0000545
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000546 // declaring objc_selector outside the parameter list removes a silly
547 // scope related warning...
Steve Naroffba92b2e2008-03-27 22:29:16 +0000548 if (IsHeader)
Steve Naroff62c26322009-02-03 20:39:18 +0000549 Preamble = "#pragma once\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000550 Preamble += "struct objc_selector; struct objc_class;\n";
Steve Naroff46a98a72008-12-23 20:11:22 +0000551 Preamble += "struct __rw_objc_super { struct objc_object *object; ";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000552 Preamble += "struct objc_object *superClass; ";
Steve Naroffc0a123c2008-03-11 17:37:02 +0000553 if (LangOpts.Microsoft) {
554 // Add a constructor for creating temporary objects.
Ted Kremenek8189cde2009-02-07 01:47:29 +0000555 Preamble += "__rw_objc_super(struct objc_object *o, struct objc_object *s) "
556 ": ";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000557 Preamble += "object(o), superClass(s) {} ";
Steve Naroffc0a123c2008-03-11 17:37:02 +0000558 }
Steve Naroffba92b2e2008-03-27 22:29:16 +0000559 Preamble += "};\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000560 Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
561 Preamble += "typedef struct objc_object Protocol;\n";
562 Preamble += "#define _REWRITER_typedef_Protocol\n";
563 Preamble += "#endif\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000564 if (LangOpts.Microsoft) {
565 Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
566 Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
567 } else
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000568 Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000569 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000570 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000571 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000572 Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000573 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend_stret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000574 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000575 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper_stret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000576 Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000577 Preamble += "__OBJC_RW_DLLIMPORT double objc_msgSend_fpret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000578 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000579 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getClass";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000580 Preamble += "(const char *);\n";
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +0000581 Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass";
582 Preamble += "(struct objc_class *);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000583 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getMetaClass";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000584 Preamble += "(const char *);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000585 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw(struct objc_object *);\n";
586 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_enter(void *);\n";
587 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_exit(void *);\n";
588 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_exception_extract(void *);\n";
589 Preamble += "__OBJC_RW_DLLIMPORT int objc_exception_match";
Steve Naroff580ca782008-05-09 21:17:56 +0000590 Preamble += "(struct objc_class *, struct objc_object *);\n";
Steve Naroff59f05a42008-07-16 18:58:11 +0000591 // @synchronized hooks.
Steve Naroff4ebd7162008-12-08 17:30:33 +0000592 Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_enter(struct objc_object *);\n";
593 Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_exit(struct objc_object *);\n";
594 Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000595 Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
596 Preamble += "struct __objcFastEnumerationState {\n\t";
597 Preamble += "unsigned long state;\n\t";
Steve Naroffb10f2732008-04-04 22:58:22 +0000598 Preamble += "void **itemsPtr;\n\t";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000599 Preamble += "unsigned long *mutationsPtr;\n\t";
600 Preamble += "unsigned long extra[5];\n};\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000601 Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000602 Preamble += "#define __FASTENUMERATIONSTATE\n";
603 Preamble += "#endif\n";
604 Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
605 Preamble += "struct __NSConstantStringImpl {\n";
606 Preamble += " int *isa;\n";
607 Preamble += " int flags;\n";
608 Preamble += " char *str;\n";
609 Preamble += " long length;\n";
610 Preamble += "};\n";
Steve Naroff88bee742008-08-05 20:04:48 +0000611 Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
612 Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
613 Preamble += "#else\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000614 Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
Steve Naroff88bee742008-08-05 20:04:48 +0000615 Preamble += "#endif\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000616 Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
617 Preamble += "#endif\n";
Steve Naroff54055232008-10-27 17:20:55 +0000618 // Blocks preamble.
619 Preamble += "#ifndef BLOCK_IMPL\n";
620 Preamble += "#define BLOCK_IMPL\n";
621 Preamble += "struct __block_impl {\n";
622 Preamble += " void *isa;\n";
623 Preamble += " int Flags;\n";
Steve Naroff01aec112009-12-06 21:14:13 +0000624 Preamble += " int Reserved;\n";
Steve Naroff54055232008-10-27 17:20:55 +0000625 Preamble += " void *FuncPtr;\n";
626 Preamble += "};\n";
Steve Naroff5bc60d02008-12-16 15:50:30 +0000627 Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
Steve Naroffc9c1e9c2009-12-06 01:52:22 +0000628 Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000629 Preamble += "extern \"C\" __declspec(dllexport) "
630 "void _Block_object_assign(void *, const void *, const int);\n";
Steve Naroffa851e602009-12-06 01:33:56 +0000631 Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
632 Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
633 Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
634 Preamble += "#else\n";
Steve Naroffcd826372010-01-05 18:09:31 +0000635 Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
636 Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
Steve Naroffa851e602009-12-06 01:33:56 +0000637 Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
638 Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
639 Preamble += "#endif\n";
Steve Naroff54055232008-10-27 17:20:55 +0000640 Preamble += "#endif\n";
Steve Naroffa48396e2008-10-27 18:50:14 +0000641 if (LangOpts.Microsoft) {
Steve Naroff4ebd7162008-12-08 17:30:33 +0000642 Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
643 Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
Chris Lattner553e5832010-04-13 17:33:56 +0000644 Preamble += "#ifndef KEEP_ATTRIBUTES\n"; // We use this for clang tests.
Steve Naroffa48396e2008-10-27 18:50:14 +0000645 Preamble += "#define __attribute__(X)\n";
Chris Lattner553e5832010-04-13 17:33:56 +0000646 Preamble += "#endif\n";
Fariborz Jahanian34204192010-01-15 22:29:39 +0000647 Preamble += "#define __weak\n";
Steve Naroffa48396e2008-10-27 18:50:14 +0000648 }
Fariborz Jahanian2086d542010-01-05 19:21:35 +0000649 else {
Fariborz Jahanian52b08f22009-12-23 02:07:37 +0000650 Preamble += "#define __block\n";
Fariborz Jahanian2086d542010-01-05 19:21:35 +0000651 Preamble += "#define __weak\n";
652 }
Fariborz Jahaniandf496522010-03-02 01:19:04 +0000653 // NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
654 // as this avoids warning in any 64bit/32bit compilation model.
655 Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000656}
657
658
Chris Lattnerf04da132007-10-24 17:06:59 +0000659//===----------------------------------------------------------------------===//
660// Top Level Driver Code
661//===----------------------------------------------------------------------===//
662
Chris Lattner682bf922009-03-29 16:50:03 +0000663void RewriteObjC::HandleTopLevelSingleDecl(Decl *D) {
Ted Kremeneke50187a2010-02-05 21:28:51 +0000664 if (Diags.hasErrorOccurred())
665 return;
666
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000667 // Two cases: either the decl could be in the main file, or it could be in a
668 // #included file. If the former, rewrite it now. If the later, check to see
669 // if we rewrote the #include/#import.
670 SourceLocation Loc = D->getLocation();
Chris Lattnerf7cf85b2009-01-16 07:36:28 +0000671 Loc = SM->getInstantiationLoc(Loc);
Mike Stump1eb44332009-09-09 15:08:12 +0000672
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000673 // If this is for a builtin, ignore it.
674 if (Loc.isInvalid()) return;
675
Steve Naroffebf2b562007-10-23 23:50:29 +0000676 // Look for built-in declarations that we need to refer during the rewrite.
677 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
Steve Naroff09b266e2007-10-30 23:14:51 +0000678 RewriteFunctionDecl(FD);
Steve Naroff248a7532008-04-15 22:42:06 +0000679 } else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
Steve Naroffbeaf2992007-11-03 11:27:19 +0000680 // declared in <Foundation/NSString.h>
Daniel Dunbar4087f272010-08-17 22:39:59 +0000681 if (FVD->getName() == "_NSConstantStringClassReference") {
Steve Naroffbeaf2992007-11-03 11:27:19 +0000682 ConstantStringClassReference = FVD;
683 return;
684 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000685 } else if (ObjCInterfaceDecl *MD = dyn_cast<ObjCInterfaceDecl>(D)) {
Steve Naroffbef11852007-10-26 20:53:56 +0000686 RewriteInterfaceDecl(MD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000687 } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
Steve Naroff423cb562007-10-30 13:30:57 +0000688 RewriteCategoryDecl(CD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000689 } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
Steve Naroff752d6ef2007-10-30 16:42:30 +0000690 RewriteProtocolDecl(PD);
Mike Stump1eb44332009-09-09 15:08:12 +0000691 } else if (ObjCForwardProtocolDecl *FP =
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000692 dyn_cast<ObjCForwardProtocolDecl>(D)){
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000693 RewriteForwardProtocolDecl(FP);
Douglas Gregord0434102009-01-09 00:49:46 +0000694 } else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
695 // Recurse into linkage specifications
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000696 for (DeclContext::decl_iterator DI = LSD->decls_begin(),
697 DIEnd = LSD->decls_end();
Douglas Gregord0434102009-01-09 00:49:46 +0000698 DI != DIEnd; ++DI)
Chris Lattner682bf922009-03-29 16:50:03 +0000699 HandleTopLevelSingleDecl(*DI);
Steve Naroffebf2b562007-10-23 23:50:29 +0000700 }
Chris Lattnerf04da132007-10-24 17:06:59 +0000701 // If we have a decl in the main file, see if we should rewrite it.
Ted Kremenekcf7e9582008-04-14 21:24:13 +0000702 if (SM->isFromMainFile(Loc))
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000703 return HandleDeclInMainFile(D);
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000704}
705
Chris Lattnerf04da132007-10-24 17:06:59 +0000706//===----------------------------------------------------------------------===//
707// Syntactic (non-AST) Rewriting Code
708//===----------------------------------------------------------------------===//
709
Steve Naroffb29b4272008-04-14 22:03:09 +0000710void RewriteObjC::RewriteInclude() {
Chris Lattner2b2453a2009-01-17 06:22:33 +0000711 SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
Benjamin Kramerf6ac97b2010-03-16 14:14:31 +0000712 llvm::StringRef MainBuf = SM->getBufferData(MainFileID);
713 const char *MainBufStart = MainBuf.begin();
714 const char *MainBufEnd = MainBuf.end();
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000715 size_t ImportLen = strlen("import");
Mike Stump1eb44332009-09-09 15:08:12 +0000716
Fariborz Jahanianaf57b462008-01-19 01:03:17 +0000717 // Loop over the whole file, looking for includes.
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000718 for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
719 if (*BufPtr == '#') {
720 if (++BufPtr == MainBufEnd)
721 return;
722 while (*BufPtr == ' ' || *BufPtr == '\t')
723 if (++BufPtr == MainBufEnd)
724 return;
725 if (!strncmp(BufPtr, "import", ImportLen)) {
726 // replace import with include
Mike Stump1eb44332009-09-09 15:08:12 +0000727 SourceLocation ImportLoc =
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000728 LocStart.getFileLocWithOffset(BufPtr-MainBufStart);
Benjamin Kramerd999b372010-02-14 14:14:16 +0000729 ReplaceText(ImportLoc, ImportLen, "include");
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000730 BufPtr += ImportLen;
731 }
732 }
733 }
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000734}
735
Steve Naroffeb0646c2008-12-02 15:48:25 +0000736static std::string getIvarAccessString(ObjCInterfaceDecl *ClassDecl,
737 ObjCIvarDecl *OID) {
738 std::string S;
739 S = "((struct ";
740 S += ClassDecl->getIdentifier()->getName();
741 S += "_IMPL *)self)->";
Daniel Dunbar5ffe14c2009-10-18 20:26:27 +0000742 S += OID->getName();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000743 return S;
744}
745
Steve Naroffa0876e82008-12-02 17:36:43 +0000746void RewriteObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
747 ObjCImplementationDecl *IMD,
748 ObjCCategoryImplDecl *CID) {
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000749 static bool objcGetPropertyDefined = false;
750 static bool objcSetPropertyDefined = false;
Steve Naroffd40910b2008-12-01 20:33:01 +0000751 SourceLocation startLoc = PID->getLocStart();
Benjamin Kramerd999b372010-02-14 14:14:16 +0000752 InsertText(startLoc, "// ");
Steve Naroffeb0646c2008-12-02 15:48:25 +0000753 const char *startBuf = SM->getCharacterData(startLoc);
754 assert((*startBuf == '@') && "bogus @synthesize location");
755 const char *semiBuf = strchr(startBuf, ';');
756 assert((*semiBuf == ';') && "@synthesize: can't find ';'");
Ted Kremenek8189cde2009-02-07 01:47:29 +0000757 SourceLocation onePastSemiLoc =
758 startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000759
760 if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
761 return; // FIXME: is this correct?
Mike Stump1eb44332009-09-09 15:08:12 +0000762
Steve Naroffeb0646c2008-12-02 15:48:25 +0000763 // Generate the 'getter' function.
Steve Naroffeb0646c2008-12-02 15:48:25 +0000764 ObjCPropertyDecl *PD = PID->getPropertyDecl();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000765 ObjCInterfaceDecl *ClassDecl = PD->getGetterMethodDecl()->getClassInterface();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000766 ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
Mike Stump1eb44332009-09-09 15:08:12 +0000767
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000768 if (!OID)
769 return;
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000770 unsigned Attributes = PD->getPropertyAttributes();
771 bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
772 (Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
773 ObjCPropertyDecl::OBJC_PR_copy));
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000774 std::string Getr;
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000775 if (GenGetProperty && !objcGetPropertyDefined) {
776 objcGetPropertyDefined = true;
777 // FIXME. Is this attribute correct in all cases?
778 Getr = "\nextern \"C\" __declspec(dllimport) "
779 "id objc_getProperty(id, SEL, long, bool);\n";
780 }
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000781 RewriteObjCMethodDecl(PD->getGetterMethodDecl(), Getr);
782 Getr += "{ ";
783 // Synthesize an explicit cast to gain access to the ivar.
Steve Naroff3539cdb2008-12-02 17:54:50 +0000784 // See objc-act.c:objc_synthesize_new_getter() for details.
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000785 if (GenGetProperty) {
786 // return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1)
787 Getr += "typedef ";
788 const FunctionType *FPRetType = 0;
789 RewriteTypeIntoString(PD->getGetterMethodDecl()->getResultType(), Getr,
790 FPRetType);
791 Getr += " _TYPE";
792 if (FPRetType) {
793 Getr += ")"; // close the precedence "scope" for "*".
794
795 // Now, emit the argument types (if any).
Daniel Dunbarfa297fb2010-06-30 19:16:53 +0000796 if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000797 Getr += "(";
798 for (unsigned i = 0, e = FT->getNumArgs(); i != e; ++i) {
799 if (i) Getr += ", ";
Daniel Dunbarfa297fb2010-06-30 19:16:53 +0000800 std::string ParamStr = FT->getArgType(i).getAsString(
801 Context->PrintingPolicy);
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000802 Getr += ParamStr;
803 }
804 if (FT->isVariadic()) {
805 if (FT->getNumArgs()) Getr += ", ";
806 Getr += "...";
807 }
808 Getr += ")";
809 } else
810 Getr += "()";
811 }
812 Getr += ";\n";
813 Getr += "return (_TYPE)";
814 Getr += "objc_getProperty(self, _cmd, ";
815 SynthesizeIvarOffsetComputation(ClassDecl, OID, Getr);
816 Getr += ", 1)";
817 }
818 else
819 Getr += "return " + getIvarAccessString(ClassDecl, OID);
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000820 Getr += "; }";
Benjamin Kramerd999b372010-02-14 14:14:16 +0000821 InsertText(onePastSemiLoc, Getr);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000822 if (PD->isReadOnly())
823 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000824
Steve Naroffeb0646c2008-12-02 15:48:25 +0000825 // Generate the 'setter' function.
826 std::string Setr;
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000827 bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
828 ObjCPropertyDecl::OBJC_PR_copy);
829 if (GenSetProperty && !objcSetPropertyDefined) {
830 objcSetPropertyDefined = true;
831 // FIXME. Is this attribute correct in all cases?
832 Setr = "\nextern \"C\" __declspec(dllimport) "
833 "void objc_setProperty (id, SEL, long, id, bool, bool);\n";
834 }
835
Steve Naroffeb0646c2008-12-02 15:48:25 +0000836 RewriteObjCMethodDecl(PD->getSetterMethodDecl(), Setr);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000837 Setr += "{ ";
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000838 // Synthesize an explicit cast to initialize the ivar.
Steve Naroff15f081d2008-12-03 00:56:33 +0000839 // See objc-act.c:objc_synthesize_new_setter() for details.
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000840 if (GenSetProperty) {
841 Setr += "objc_setProperty (self, _cmd, ";
842 SynthesizeIvarOffsetComputation(ClassDecl, OID, Setr);
843 Setr += ", (id)";
Daniel Dunbar4087f272010-08-17 22:39:59 +0000844 Setr += PD->getName();
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000845 Setr += ", ";
846 if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic)
847 Setr += "0, ";
848 else
849 Setr += "1, ";
850 if (Attributes & ObjCPropertyDecl::OBJC_PR_copy)
851 Setr += "1)";
852 else
853 Setr += "0)";
854 }
855 else {
856 Setr += getIvarAccessString(ClassDecl, OID) + " = ";
Daniel Dunbar4087f272010-08-17 22:39:59 +0000857 Setr += PD->getName();
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000858 }
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000859 Setr += "; }";
Benjamin Kramerd999b372010-02-14 14:14:16 +0000860 InsertText(onePastSemiLoc, Setr);
Steve Naroffd40910b2008-12-01 20:33:01 +0000861}
Chris Lattner8a12c272007-10-11 18:38:32 +0000862
Steve Naroffb29b4272008-04-14 22:03:09 +0000863void RewriteObjC::RewriteForwardClassDecl(ObjCClassDecl *ClassDecl) {
Chris Lattnerf04da132007-10-24 17:06:59 +0000864 // Get the start location and compute the semi location.
865 SourceLocation startLoc = ClassDecl->getLocation();
866 const char *startBuf = SM->getCharacterData(startLoc);
867 const char *semiPtr = strchr(startBuf, ';');
Mike Stump1eb44332009-09-09 15:08:12 +0000868
Chris Lattnerf04da132007-10-24 17:06:59 +0000869 // Translate to typedef's that forward reference structs with the same name
870 // as the class. As a convenience, we include the original declaration
871 // as a comment.
872 std::string typedefString;
Fariborz Jahanian91fbd122010-01-11 22:48:40 +0000873 typedefString += "// @class ";
874 for (ObjCClassDecl::iterator I = ClassDecl->begin(), E = ClassDecl->end();
875 I != E; ++I) {
876 ObjCInterfaceDecl *ForwardDecl = I->getInterface();
877 typedefString += ForwardDecl->getNameAsString();
878 if (I+1 != E)
879 typedefString += ", ";
880 else
881 typedefString += ";\n";
882 }
883
Chris Lattner67956052009-02-20 18:04:31 +0000884 for (ObjCClassDecl::iterator I = ClassDecl->begin(), E = ClassDecl->end();
885 I != E; ++I) {
Ted Kremenek321c22f2009-11-18 00:28:11 +0000886 ObjCInterfaceDecl *ForwardDecl = I->getInterface();
Steve Naroff32174822007-11-09 12:50:28 +0000887 typedefString += "#ifndef _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000888 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000889 typedefString += "\n";
890 typedefString += "#define _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000891 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000892 typedefString += "\n";
Steve Naroff352336b2007-11-05 14:36:37 +0000893 typedefString += "typedef struct objc_object ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000894 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000895 typedefString += ";\n#endif\n";
Steve Naroff934f2762007-10-24 22:48:43 +0000896 }
Mike Stump1eb44332009-09-09 15:08:12 +0000897
Steve Naroff934f2762007-10-24 22:48:43 +0000898 // Replace the @class with typedefs corresponding to the classes.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000899 ReplaceText(startLoc, semiPtr-startBuf+1, typedefString);
Chris Lattnerf04da132007-10-24 17:06:59 +0000900}
901
Steve Naroffb29b4272008-04-14 22:03:09 +0000902void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
Fariborz Jahaniand0502402010-01-21 17:36:00 +0000903 // When method is a synthesized one, such as a getter/setter there is
904 // nothing to rewrite.
905 if (Method->isSynthesized())
906 return;
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000907 SourceLocation LocStart = Method->getLocStart();
908 SourceLocation LocEnd = Method->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +0000909
Chris Lattner30fc9332009-02-04 01:06:56 +0000910 if (SM->getInstantiationLineNumber(LocEnd) >
911 SM->getInstantiationLineNumber(LocStart)) {
Benjamin Kramerd999b372010-02-14 14:14:16 +0000912 InsertText(LocStart, "#if 0\n");
913 ReplaceText(LocEnd, 1, ";\n#endif\n");
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000914 } else {
Benjamin Kramerd999b372010-02-14 14:14:16 +0000915 InsertText(LocStart, "// ");
Steve Naroff423cb562007-10-30 13:30:57 +0000916 }
917}
918
Mike Stump1eb44332009-09-09 15:08:12 +0000919void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop) {
Fariborz Jahaniand0502402010-01-21 17:36:00 +0000920 SourceLocation Loc = prop->getAtLoc();
Mike Stump1eb44332009-09-09 15:08:12 +0000921
Benjamin Kramerd999b372010-02-14 14:14:16 +0000922 ReplaceText(Loc, 0, "// ");
Steve Naroff6327e0d2009-01-11 01:06:09 +0000923 // FIXME: handle properties that are declared across multiple lines.
Fariborz Jahanian957cf652007-11-07 00:09:37 +0000924}
925
Steve Naroffb29b4272008-04-14 22:03:09 +0000926void RewriteObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
Steve Naroff423cb562007-10-30 13:30:57 +0000927 SourceLocation LocStart = CatDecl->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +0000928
Steve Naroff423cb562007-10-30 13:30:57 +0000929 // FIXME: handle category headers that are declared across multiple lines.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000930 ReplaceText(LocStart, 0, "// ");
Mike Stump1eb44332009-09-09 15:08:12 +0000931
Fariborz Jahanian13751e32010-02-10 01:15:09 +0000932 for (ObjCCategoryDecl::prop_iterator I = CatDecl->prop_begin(),
933 E = CatDecl->prop_end(); I != E; ++I)
934 RewriteProperty(*I);
935
Mike Stump1eb44332009-09-09 15:08:12 +0000936 for (ObjCCategoryDecl::instmeth_iterator
937 I = CatDecl->instmeth_begin(), E = CatDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000938 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000939 RewriteMethodDeclaration(*I);
Mike Stump1eb44332009-09-09 15:08:12 +0000940 for (ObjCCategoryDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000941 I = CatDecl->classmeth_begin(), E = CatDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000942 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000943 RewriteMethodDeclaration(*I);
944
Steve Naroff423cb562007-10-30 13:30:57 +0000945 // Lastly, comment out the @end.
Fariborz Jahanian73d1eb02010-05-24 17:22:38 +0000946 ReplaceText(CatDecl->getAtEndRange().getBegin(),
947 strlen("@end"), "/* @end */");
Steve Naroff423cb562007-10-30 13:30:57 +0000948}
949
Steve Naroffb29b4272008-04-14 22:03:09 +0000950void RewriteObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
Steve Naroff752d6ef2007-10-30 16:42:30 +0000951 SourceLocation LocStart = PDecl->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +0000952
Steve Naroff752d6ef2007-10-30 16:42:30 +0000953 // FIXME: handle protocol headers that are declared across multiple lines.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000954 ReplaceText(LocStart, 0, "// ");
Mike Stump1eb44332009-09-09 15:08:12 +0000955
956 for (ObjCProtocolDecl::instmeth_iterator
957 I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000958 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000959 RewriteMethodDeclaration(*I);
Douglas Gregor6ab35242009-04-09 21:40:53 +0000960 for (ObjCProtocolDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000961 I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000962 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000963 RewriteMethodDeclaration(*I);
964
Steve Naroff752d6ef2007-10-30 16:42:30 +0000965 // Lastly, comment out the @end.
Ted Kremenek782f2f52010-01-07 01:20:12 +0000966 SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
Fariborz Jahanian73d1eb02010-05-24 17:22:38 +0000967 ReplaceText(LocEnd, strlen("@end"), "/* @end */");
Steve Naroff8cc764c2007-11-14 15:03:57 +0000968
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000969 // Must comment out @optional/@required
970 const char *startBuf = SM->getCharacterData(LocStart);
971 const char *endBuf = SM->getCharacterData(LocEnd);
972 for (const char *p = startBuf; p < endBuf; p++) {
973 if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
Steve Naroff8cc764c2007-11-14 15:03:57 +0000974 SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +0000975 ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */");
Mike Stump1eb44332009-09-09 15:08:12 +0000976
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000977 }
978 else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
Steve Naroff8cc764c2007-11-14 15:03:57 +0000979 SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +0000980 ReplaceText(OptionalLoc, strlen("@required"), "/* @required */");
Mike Stump1eb44332009-09-09 15:08:12 +0000981
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000982 }
983 }
Steve Naroff752d6ef2007-10-30 16:42:30 +0000984}
985
Steve Naroffb29b4272008-04-14 22:03:09 +0000986void RewriteObjC::RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *PDecl) {
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000987 SourceLocation LocStart = PDecl->getLocation();
Steve Naroffb7fa9922007-11-14 03:37:28 +0000988 if (LocStart.isInvalid())
989 assert(false && "Invalid SourceLocation");
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000990 // FIXME: handle forward protocol that are declared across multiple lines.
Benjamin Kramerd999b372010-02-14 14:14:16 +0000991 ReplaceText(LocStart, 0, "// ");
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000992}
993
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000994void RewriteObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr,
995 const FunctionType *&FPRetType) {
996 if (T->isObjCQualifiedIdType())
Fariborz Jahanianc5692492007-12-17 21:03:50 +0000997 ResultStr += "id";
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +0000998 else if (T->isFunctionPointerType() ||
999 T->isBlockPointerType()) {
Steve Naroff76e429d2008-07-16 14:40:40 +00001000 // needs special handling, since pointer-to-functions have special
1001 // syntax (where a decaration models use).
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +00001002 QualType retType = T;
Steve Narofff4312dc2008-12-11 19:29:16 +00001003 QualType PointeeTy;
Ted Kremenek6217b802009-07-29 21:53:49 +00001004 if (const PointerType* PT = retType->getAs<PointerType>())
Steve Narofff4312dc2008-12-11 19:29:16 +00001005 PointeeTy = PT->getPointeeType();
Ted Kremenek6217b802009-07-29 21:53:49 +00001006 else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
Steve Narofff4312dc2008-12-11 19:29:16 +00001007 PointeeTy = BPT->getPointeeType();
John McCall183700f2009-09-21 23:43:11 +00001008 if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001009 ResultStr += FPRetType->getResultType().getAsString(
1010 Context->PrintingPolicy);
Steve Narofff4312dc2008-12-11 19:29:16 +00001011 ResultStr += "(*";
Steve Naroff76e429d2008-07-16 14:40:40 +00001012 }
1013 } else
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001014 ResultStr += T.getAsString(Context->PrintingPolicy);
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +00001015}
1016
1017void RewriteObjC::RewriteObjCMethodDecl(ObjCMethodDecl *OMD,
1018 std::string &ResultStr) {
1019 //fprintf(stderr,"In RewriteObjCMethodDecl\n");
1020 const FunctionType *FPRetType = 0;
1021 ResultStr += "\nstatic ";
1022 RewriteTypeIntoString(OMD->getResultType(), ResultStr, FPRetType);
Fariborz Jahanian531a1ea2008-01-10 01:39:52 +00001023 ResultStr += " ";
Mike Stump1eb44332009-09-09 15:08:12 +00001024
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001025 // Unique method name
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001026 std::string NameStr;
Mike Stump1eb44332009-09-09 15:08:12 +00001027
Douglas Gregorf8d49f62009-01-09 17:18:27 +00001028 if (OMD->isInstanceMethod())
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001029 NameStr += "_I_";
1030 else
1031 NameStr += "_C_";
Mike Stump1eb44332009-09-09 15:08:12 +00001032
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001033 NameStr += OMD->getClassInterface()->getNameAsString();
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001034 NameStr += "_";
Mike Stump1eb44332009-09-09 15:08:12 +00001035
1036 if (ObjCCategoryImplDecl *CID =
Steve Naroff3e0a5402009-01-08 19:41:02 +00001037 dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001038 NameStr += CID->getNameAsString();
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001039 NameStr += "_";
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001040 }
Mike Stump1eb44332009-09-09 15:08:12 +00001041 // Append selector names, replacing ':' with '_'
Chris Lattner077bf5e2008-11-24 03:33:13 +00001042 {
1043 std::string selString = OMD->getSelector().getAsString();
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001044 int len = selString.size();
1045 for (int i = 0; i < len; i++)
1046 if (selString[i] == ':')
1047 selString[i] = '_';
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001048 NameStr += selString;
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001049 }
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00001050 // Remember this name for metadata emission
1051 MethodInternalNames[OMD] = NameStr;
1052 ResultStr += NameStr;
Mike Stump1eb44332009-09-09 15:08:12 +00001053
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001054 // Rewrite arguments
1055 ResultStr += "(";
Mike Stump1eb44332009-09-09 15:08:12 +00001056
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001057 // invisible arguments
Douglas Gregorf8d49f62009-01-09 17:18:27 +00001058 if (OMD->isInstanceMethod()) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001059 QualType selfTy = Context->getObjCInterfaceType(OMD->getClassInterface());
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001060 selfTy = Context->getPointerType(selfTy);
Steve Naroff05b8c782008-03-12 00:25:36 +00001061 if (!LangOpts.Microsoft) {
1062 if (ObjCSynthesizedStructs.count(OMD->getClassInterface()))
1063 ResultStr += "struct ";
1064 }
1065 // When rewriting for Microsoft, explicitly omit the structure name.
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001066 ResultStr += OMD->getClassInterface()->getNameAsString();
Steve Naroff61ed9ca2008-03-10 23:16:54 +00001067 ResultStr += " *";
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001068 }
1069 else
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001070 ResultStr += Context->getObjCClassType().getAsString(
1071 Context->PrintingPolicy);
Mike Stump1eb44332009-09-09 15:08:12 +00001072
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001073 ResultStr += " self, ";
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001074 ResultStr += Context->getObjCSelType().getAsString(Context->PrintingPolicy);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001075 ResultStr += " _cmd";
Mike Stump1eb44332009-09-09 15:08:12 +00001076
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001077 // Method arguments.
Chris Lattner89951a82009-02-20 18:43:26 +00001078 for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
1079 E = OMD->param_end(); PI != E; ++PI) {
1080 ParmVarDecl *PDecl = *PI;
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001081 ResultStr += ", ";
Steve Naroff543409e2008-04-18 21:13:19 +00001082 if (PDecl->getType()->isObjCQualifiedIdType()) {
1083 ResultStr += "id ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001084 ResultStr += PDecl->getNameAsString();
Steve Naroff543409e2008-04-18 21:13:19 +00001085 } else {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001086 std::string Name = PDecl->getNameAsString();
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00001087 QualType QT = PDecl->getType();
1088 // Make sure we convert "t (^)(...)" to "t (*)(...)".
1089 if (convertBlockPointerToFunctionPointer(QT))
1090 QT.getAsStringInternal(Name, Context->PrintingPolicy);
1091 else
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00001092 PDecl->getType().getAsStringInternal(Name, Context->PrintingPolicy);
Steve Naroff543409e2008-04-18 21:13:19 +00001093 ResultStr += Name;
1094 }
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001095 }
Fariborz Jahanian7c39ff72008-01-21 20:14:23 +00001096 if (OMD->isVariadic())
1097 ResultStr += ", ...";
Fariborz Jahanian531a1ea2008-01-10 01:39:52 +00001098 ResultStr += ") ";
Mike Stump1eb44332009-09-09 15:08:12 +00001099
Steve Naroff76e429d2008-07-16 14:40:40 +00001100 if (FPRetType) {
1101 ResultStr += ")"; // close the precedence "scope" for "*".
Mike Stump1eb44332009-09-09 15:08:12 +00001102
Steve Naroff76e429d2008-07-16 14:40:40 +00001103 // Now, emit the argument types (if any).
Douglas Gregor72564e72009-02-26 23:50:07 +00001104 if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
Steve Naroff76e429d2008-07-16 14:40:40 +00001105 ResultStr += "(";
1106 for (unsigned i = 0, e = FT->getNumArgs(); i != e; ++i) {
1107 if (i) ResultStr += ", ";
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001108 std::string ParamStr = FT->getArgType(i).getAsString(
1109 Context->PrintingPolicy);
Steve Naroff76e429d2008-07-16 14:40:40 +00001110 ResultStr += ParamStr;
1111 }
1112 if (FT->isVariadic()) {
1113 if (FT->getNumArgs()) ResultStr += ", ";
1114 ResultStr += "...";
1115 }
1116 ResultStr += ")";
1117 } else {
1118 ResultStr += "()";
1119 }
1120 }
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001121}
Douglas Gregor4afa39d2009-01-20 01:17:11 +00001122void RewriteObjC::RewriteImplementationDecl(Decl *OID) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001123 ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
1124 ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
Mike Stump1eb44332009-09-09 15:08:12 +00001125
Fariborz Jahaniana1352162010-02-15 21:11:41 +00001126 InsertText(IMD ? IMD->getLocStart() : CID->getLocStart(), "// ");
Mike Stump1eb44332009-09-09 15:08:12 +00001127
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001128 for (ObjCCategoryImplDecl::instmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001129 I = IMD ? IMD->instmeth_begin() : CID->instmeth_begin(),
1130 E = IMD ? IMD->instmeth_end() : CID->instmeth_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001131 I != E; ++I) {
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001132 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001133 ObjCMethodDecl *OMD = *I;
1134 RewriteObjCMethodDecl(OMD, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001135 SourceLocation LocStart = OMD->getLocStart();
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00001136 SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
Sebastian Redld3a413d2009-04-26 20:35:05 +00001137
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001138 const char *startBuf = SM->getCharacterData(LocStart);
1139 const char *endBuf = SM->getCharacterData(LocEnd);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001140 ReplaceText(LocStart, endBuf-startBuf, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001141 }
Mike Stump1eb44332009-09-09 15:08:12 +00001142
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001143 for (ObjCCategoryImplDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001144 I = IMD ? IMD->classmeth_begin() : CID->classmeth_begin(),
1145 E = IMD ? IMD->classmeth_end() : CID->classmeth_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001146 I != E; ++I) {
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001147 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001148 ObjCMethodDecl *OMD = *I;
1149 RewriteObjCMethodDecl(OMD, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001150 SourceLocation LocStart = OMD->getLocStart();
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00001151 SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +00001152
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001153 const char *startBuf = SM->getCharacterData(LocStart);
1154 const char *endBuf = SM->getCharacterData(LocEnd);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001155 ReplaceText(LocStart, endBuf-startBuf, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001156 }
Steve Naroffd40910b2008-12-01 20:33:01 +00001157 for (ObjCCategoryImplDecl::propimpl_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001158 I = IMD ? IMD->propimpl_begin() : CID->propimpl_begin(),
Mike Stump1eb44332009-09-09 15:08:12 +00001159 E = IMD ? IMD->propimpl_end() : CID->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001160 I != E; ++I) {
Steve Naroffa0876e82008-12-02 17:36:43 +00001161 RewritePropertyImplDecl(*I, IMD, CID);
Steve Naroffd40910b2008-12-01 20:33:01 +00001162 }
1163
Benjamin Kramerd999b372010-02-14 14:14:16 +00001164 InsertText(IMD ? IMD->getLocEnd() : CID->getLocEnd(), "// ");
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001165}
1166
Steve Naroffb29b4272008-04-14 22:03:09 +00001167void RewriteObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
Steve Narofff908a872007-10-30 02:23:23 +00001168 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001169 if (!ObjCForwardDecls.count(ClassDecl)) {
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001170 // we haven't seen a forward decl - generate a typedef.
Steve Naroff5086a8d2007-11-14 23:02:56 +00001171 ResultStr = "#ifndef _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001172 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001173 ResultStr += "\n";
1174 ResultStr += "#define _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001175 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001176 ResultStr += "\n";
Steve Naroff61ed9ca2008-03-10 23:16:54 +00001177 ResultStr += "typedef struct objc_object ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001178 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001179 ResultStr += ";\n#endif\n";
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001180 // Mark this typedef as having been generated.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001181 ObjCForwardDecls.insert(ClassDecl);
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001182 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001183 SynthesizeObjCInternalStruct(ClassDecl, ResultStr);
Mike Stump1eb44332009-09-09 15:08:12 +00001184
1185 for (ObjCInterfaceDecl::prop_iterator I = ClassDecl->prop_begin(),
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001186 E = ClassDecl->prop_end(); I != E; ++I)
Steve Naroff6327e0d2009-01-11 01:06:09 +00001187 RewriteProperty(*I);
Mike Stump1eb44332009-09-09 15:08:12 +00001188 for (ObjCInterfaceDecl::instmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001189 I = ClassDecl->instmeth_begin(), E = ClassDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +00001190 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +00001191 RewriteMethodDeclaration(*I);
Mike Stump1eb44332009-09-09 15:08:12 +00001192 for (ObjCInterfaceDecl::classmeth_iterator
1193 I = ClassDecl->classmeth_begin(), E = ClassDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +00001194 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +00001195 RewriteMethodDeclaration(*I);
1196
Steve Naroff2feac5e2007-10-30 03:43:13 +00001197 // Lastly, comment out the @end.
Fariborz Jahanian73d1eb02010-05-24 17:22:38 +00001198 ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"),
1199 "/* @end */");
Steve Naroffbef11852007-10-26 20:53:56 +00001200}
1201
Steve Naroffb619d952008-12-09 12:56:34 +00001202Stmt *RewriteObjC::RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
1203 SourceRange SrcRange) {
Steve Naroffc77a6362008-12-04 16:24:46 +00001204 // Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
1205 // This allows us to reuse all the fun and games in SynthMessageExpr().
1206 ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS());
1207 ObjCMessageExpr *MsgExpr;
1208 ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
1209 llvm::SmallVector<Expr *, 1> ExprVec;
1210 ExprVec.push_back(newStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00001211
Steve Naroff8599e7a2008-12-08 16:43:47 +00001212 Stmt *Receiver = PropRefExpr->getBase();
1213 ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
1214 if (PRE && PropGetters[PRE]) {
1215 // This allows us to handle chain/nested property getters.
1216 Receiver = PropGetters[PRE];
1217 }
Douglas Gregor04badcf2010-04-21 00:45:42 +00001218 if (isa<ObjCSuperExpr>(Receiver))
1219 MsgExpr = ObjCMessageExpr::Create(*Context,
1220 PDecl->getType().getNonReferenceType(),
1221 /*FIXME?*/SourceLocation(),
1222 Receiver->getLocStart(),
1223 /*IsInstanceSuper=*/true,
1224 cast<Expr>(Receiver)->getType(),
1225 PDecl->getSetterName(),
1226 PDecl->getSetterMethodDecl(),
1227 &ExprVec[0], 1,
1228 /*FIXME:*/SourceLocation());
1229 else
1230 MsgExpr = ObjCMessageExpr::Create(*Context,
1231 PDecl->getType().getNonReferenceType(),
1232 /*FIXME: */SourceLocation(),
1233 cast<Expr>(Receiver),
1234 PDecl->getSetterName(),
1235 PDecl->getSetterMethodDecl(),
1236 &ExprVec[0], 1,
1237 /*FIXME:*/SourceLocation());
Steve Naroffc77a6362008-12-04 16:24:46 +00001238 Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
Mike Stump1eb44332009-09-09 15:08:12 +00001239
Steve Naroffc77a6362008-12-04 16:24:46 +00001240 // Now do the actual rewrite.
Steve Naroffb619d952008-12-09 12:56:34 +00001241 ReplaceStmtWithRange(BinOp, ReplacingStmt, SrcRange);
Steve Naroffe58ee0c2008-12-10 14:53:27 +00001242 //delete BinOp;
Ted Kremenek8189cde2009-02-07 01:47:29 +00001243 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1244 // to things that stay around.
1245 Context->Deallocate(MsgExpr);
Steve Naroffc77a6362008-12-04 16:24:46 +00001246 return ReplacingStmt;
Steve Naroff15f081d2008-12-03 00:56:33 +00001247}
1248
Steve Naroffc77a6362008-12-04 16:24:46 +00001249Stmt *RewriteObjC::RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr) {
Steve Naroff15f081d2008-12-03 00:56:33 +00001250 // Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
1251 // This allows us to reuse all the fun and games in SynthMessageExpr().
1252 ObjCMessageExpr *MsgExpr;
1253 ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
Mike Stump1eb44332009-09-09 15:08:12 +00001254
Steve Naroff8599e7a2008-12-08 16:43:47 +00001255 Stmt *Receiver = PropRefExpr->getBase();
Mike Stump1eb44332009-09-09 15:08:12 +00001256
Steve Naroff8599e7a2008-12-08 16:43:47 +00001257 ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
1258 if (PRE && PropGetters[PRE]) {
1259 // This allows us to handle chain/nested property getters.
1260 Receiver = PropGetters[PRE];
1261 }
Douglas Gregor04badcf2010-04-21 00:45:42 +00001262
1263 if (isa<ObjCSuperExpr>(Receiver))
1264 MsgExpr = ObjCMessageExpr::Create(*Context,
1265 PDecl->getType().getNonReferenceType(),
1266 /*FIXME:*/SourceLocation(),
1267 Receiver->getLocStart(),
1268 /*IsInstanceSuper=*/true,
1269 cast<Expr>(Receiver)->getType(),
1270 PDecl->getGetterName(),
1271 PDecl->getGetterMethodDecl(),
1272 0, 0,
1273 /*FIXME:*/SourceLocation());
1274 else
1275 MsgExpr = ObjCMessageExpr::Create(*Context,
1276 PDecl->getType().getNonReferenceType(),
1277 /*FIXME:*/SourceLocation(),
1278 cast<Expr>(Receiver),
1279 PDecl->getGetterName(),
1280 PDecl->getGetterMethodDecl(),
1281 0, 0,
1282 /*FIXME:*/SourceLocation());
Steve Naroff15f081d2008-12-03 00:56:33 +00001283
Steve Naroff4c3580e2008-12-04 23:50:32 +00001284 Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001285
1286 if (!PropParentMap)
1287 PropParentMap = new ParentMap(CurrentBody);
1288
1289 Stmt *Parent = PropParentMap->getParent(PropRefExpr);
1290 if (Parent && isa<ObjCPropertyRefExpr>(Parent)) {
1291 // We stash away the ReplacingStmt since actually doing the
1292 // replacement/rewrite won't work for nested getters (e.g. obj.p.i)
1293 PropGetters[PropRefExpr] = ReplacingStmt;
Ted Kremenek8189cde2009-02-07 01:47:29 +00001294 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1295 // to things that stay around.
1296 Context->Deallocate(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001297 return PropRefExpr; // return the original...
1298 } else {
1299 ReplaceStmt(PropRefExpr, ReplacingStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00001300 // delete PropRefExpr; elsewhere...
Ted Kremenek8189cde2009-02-07 01:47:29 +00001301 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1302 // to things that stay around.
1303 Context->Deallocate(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001304 return ReplacingStmt;
1305 }
Steve Naroff15f081d2008-12-03 00:56:33 +00001306}
1307
Mike Stump1eb44332009-09-09 15:08:12 +00001308Stmt *RewriteObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV,
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00001309 SourceLocation OrigStart,
1310 bool &replaced) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001311 ObjCIvarDecl *D = IV->getDecl();
Fariborz Jahanian84ed6002010-01-07 18:18:32 +00001312 const Expr *BaseExpr = IV->getBase();
Steve Naroff54055232008-10-27 17:20:55 +00001313 if (CurMethodDef) {
Fariborz Jahanian8f095432010-01-26 18:28:51 +00001314 if (BaseExpr->getType()->isObjCObjectPointerType()) {
Ted Kremenek8189cde2009-02-07 01:47:29 +00001315 ObjCInterfaceType *iFaceDecl =
Fariborz Jahanian84ed6002010-01-07 18:18:32 +00001316 dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
Fariborz Jahanianffbdead2010-01-26 20:37:44 +00001317 assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null");
Steve Narofff0757612008-05-08 17:52:16 +00001318 // lookup which class implements the instance variable.
1319 ObjCInterfaceDecl *clsDeclared = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00001320 iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
Douglas Gregor6ab35242009-04-09 21:40:53 +00001321 clsDeclared);
Steve Narofff0757612008-05-08 17:52:16 +00001322 assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
Mike Stump1eb44332009-09-09 15:08:12 +00001323
Steve Narofff0757612008-05-08 17:52:16 +00001324 // Synthesize an explicit cast to gain access to the ivar.
1325 std::string RecName = clsDeclared->getIdentifier()->getName();
1326 RecName += "_IMPL";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001327 IdentifierInfo *II = &Context->Idents.get(RecName);
Abramo Bagnara465d41b2010-05-11 21:36:43 +00001328 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Ted Kremenekdf042e62008-09-05 01:34:33 +00001329 SourceLocation(), II);
Steve Narofff0757612008-05-08 17:52:16 +00001330 assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
1331 QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
John McCall9d125032010-01-15 18:39:57 +00001332 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
John McCall2de56d12010-08-25 11:45:40 +00001333 CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00001334 IV->getBase());
Steve Narofff0757612008-05-08 17:52:16 +00001335 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00001336 ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
1337 IV->getBase()->getLocEnd(),
1338 castExpr);
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00001339 replaced = true;
Mike Stump1eb44332009-09-09 15:08:12 +00001340 if (IV->isFreeIvar() &&
Steve Naroff54055232008-10-27 17:20:55 +00001341 CurMethodDef->getClassInterface() == iFaceDecl->getDecl()) {
Ted Kremenek8189cde2009-02-07 01:47:29 +00001342 MemberExpr *ME = new (Context) MemberExpr(PE, true, D,
1343 IV->getLocation(),
1344 D->getType());
Steve Naroff4c3580e2008-12-04 23:50:32 +00001345 // delete IV; leak for now, see RewritePropertySetter() usage for more info.
Steve Narofff0757612008-05-08 17:52:16 +00001346 return ME;
Steve Naroffc2a689b2007-11-15 11:33:00 +00001347 }
Fariborz Jahanian7e20ffe2010-01-28 01:41:20 +00001348 // Get the new text
Chris Lattner3b2c58c2008-05-23 20:40:52 +00001349 // Cannot delete IV->getBase(), since PE points to it.
1350 // Replace the old base with the cast. This is important when doing
1351 // embedded rewrites. For example, [newInv->_container addObject:0].
Mike Stump1eb44332009-09-09 15:08:12 +00001352 IV->setBase(PE);
Chris Lattner3b2c58c2008-05-23 20:40:52 +00001353 return IV;
Steve Naroffc2a689b2007-11-15 11:33:00 +00001354 }
Steve Naroff84472a82008-04-18 21:55:08 +00001355 } else { // we are outside a method.
Steve Naroff9f525972008-05-06 23:20:07 +00001356 assert(!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method");
Mike Stump1eb44332009-09-09 15:08:12 +00001357
Steve Naroff9f525972008-05-06 23:20:07 +00001358 // Explicit ivar refs need to have a cast inserted.
1359 // FIXME: consider sharing some of this code with the code above.
Fariborz Jahanian26337b22010-01-12 17:31:23 +00001360 if (BaseExpr->getType()->isObjCObjectPointerType()) {
Fariborz Jahanianc374cd92010-01-11 17:50:35 +00001361 ObjCInterfaceType *iFaceDecl =
1362 dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
Steve Naroff9f525972008-05-06 23:20:07 +00001363 // lookup which class implements the instance variable.
1364 ObjCInterfaceDecl *clsDeclared = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00001365 iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
Douglas Gregor6ab35242009-04-09 21:40:53 +00001366 clsDeclared);
Steve Naroff9f525972008-05-06 23:20:07 +00001367 assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
Mike Stump1eb44332009-09-09 15:08:12 +00001368
Steve Naroff9f525972008-05-06 23:20:07 +00001369 // Synthesize an explicit cast to gain access to the ivar.
1370 std::string RecName = clsDeclared->getIdentifier()->getName();
1371 RecName += "_IMPL";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001372 IdentifierInfo *II = &Context->Idents.get(RecName);
Abramo Bagnara465d41b2010-05-11 21:36:43 +00001373 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Ted Kremenekdf042e62008-09-05 01:34:33 +00001374 SourceLocation(), II);
Steve Naroff9f525972008-05-06 23:20:07 +00001375 assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
1376 QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
John McCall9d125032010-01-15 18:39:57 +00001377 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
John McCall2de56d12010-08-25 11:45:40 +00001378 CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00001379 IV->getBase());
Steve Naroff9f525972008-05-06 23:20:07 +00001380 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00001381 ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
Chris Lattner8d366162008-05-28 16:38:23 +00001382 IV->getBase()->getLocEnd(), castExpr);
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00001383 replaced = true;
Steve Naroff9f525972008-05-06 23:20:07 +00001384 // Cannot delete IV->getBase(), since PE points to it.
1385 // Replace the old base with the cast. This is important when doing
1386 // embedded rewrites. For example, [newInv->_container addObject:0].
Mike Stump1eb44332009-09-09 15:08:12 +00001387 IV->setBase(PE);
Steve Naroff9f525972008-05-06 23:20:07 +00001388 return IV;
1389 }
Steve Naroffc2a689b2007-11-15 11:33:00 +00001390 }
Steve Naroff84472a82008-04-18 21:55:08 +00001391 return IV;
Steve Naroff7e3411b2007-11-15 02:58:25 +00001392}
1393
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00001394Stmt *RewriteObjC::RewriteObjCNestedIvarRefExpr(Stmt *S, bool &replaced) {
1395 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1396 CI != E; ++CI) {
1397 if (*CI) {
1398 Stmt *newStmt = RewriteObjCNestedIvarRefExpr(*CI, replaced);
1399 if (newStmt)
1400 *CI = newStmt;
1401 }
1402 }
1403 if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
1404 SourceRange OrigStmtRange = S->getSourceRange();
1405 Stmt *newStmt = RewriteObjCIvarRefExpr(IvarRefExpr, OrigStmtRange.getBegin(),
1406 replaced);
1407 return newStmt;
Fariborz Jahanian376338a2010-02-05 17:48:10 +00001408 }
1409 if (ObjCMessageExpr *MsgRefExpr = dyn_cast<ObjCMessageExpr>(S)) {
1410 Stmt *newStmt = SynthMessageExpr(MsgRefExpr);
1411 return newStmt;
1412 }
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00001413 return S;
1414}
1415
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001416/// SynthCountByEnumWithState - To print:
1417/// ((unsigned int (*)
1418/// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
Mike Stump1eb44332009-09-09 15:08:12 +00001419/// (void *)objc_msgSend)((id)l_collection,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001420/// sel_registerName(
Mike Stump1eb44332009-09-09 15:08:12 +00001421/// "countByEnumeratingWithState:objects:count:"),
1422/// &enumState,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001423/// (id *)items, (unsigned int)16)
1424///
Steve Naroffb29b4272008-04-14 22:03:09 +00001425void RewriteObjC::SynthCountByEnumWithState(std::string &buf) {
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001426 buf += "((unsigned int (*) (id, SEL, struct __objcFastEnumerationState *, "
1427 "id *, unsigned int))(void *)objc_msgSend)";
1428 buf += "\n\t\t";
1429 buf += "((id)l_collection,\n\t\t";
1430 buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
1431 buf += "\n\t\t";
1432 buf += "&enumState, "
1433 "(id *)items, (unsigned int)16)";
1434}
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001435
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001436/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
1437/// statement to exit to its outer synthesized loop.
1438///
Steve Naroffb29b4272008-04-14 22:03:09 +00001439Stmt *RewriteObjC::RewriteBreakStmt(BreakStmt *S) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001440 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
1441 return S;
1442 // replace break with goto __break_label
1443 std::string buf;
Mike Stump1eb44332009-09-09 15:08:12 +00001444
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001445 SourceLocation startLoc = S->getLocStart();
1446 buf = "goto __break_label_";
1447 buf += utostr(ObjCBcLabelNo.back());
Benjamin Kramerd999b372010-02-14 14:14:16 +00001448 ReplaceText(startLoc, strlen("break"), buf);
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001449
1450 return 0;
1451}
1452
1453/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
1454/// statement to continue with its inner synthesized loop.
1455///
Steve Naroffb29b4272008-04-14 22:03:09 +00001456Stmt *RewriteObjC::RewriteContinueStmt(ContinueStmt *S) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001457 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
1458 return S;
1459 // replace continue with goto __continue_label
1460 std::string buf;
Mike Stump1eb44332009-09-09 15:08:12 +00001461
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001462 SourceLocation startLoc = S->getLocStart();
1463 buf = "goto __continue_label_";
1464 buf += utostr(ObjCBcLabelNo.back());
Benjamin Kramerd999b372010-02-14 14:14:16 +00001465 ReplaceText(startLoc, strlen("continue"), buf);
Mike Stump1eb44332009-09-09 15:08:12 +00001466
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001467 return 0;
1468}
1469
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001470/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001471/// It rewrites:
1472/// for ( type elem in collection) { stmts; }
Mike Stump1eb44332009-09-09 15:08:12 +00001473
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001474/// Into:
1475/// {
Mike Stump1eb44332009-09-09 15:08:12 +00001476/// type elem;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001477/// struct __objcFastEnumerationState enumState = { 0 };
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001478/// id items[16];
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001479/// id l_collection = (id)collection;
Mike Stump1eb44332009-09-09 15:08:12 +00001480/// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001481/// objects:items count:16];
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001482/// if (limit) {
1483/// unsigned long startMutations = *enumState.mutationsPtr;
1484/// do {
1485/// unsigned long counter = 0;
1486/// do {
Mike Stump1eb44332009-09-09 15:08:12 +00001487/// if (startMutations != *enumState.mutationsPtr)
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001488/// objc_enumerationMutation(l_collection);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001489/// elem = (type)enumState.itemsPtr[counter++];
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001490/// stmts;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001491/// __continue_label: ;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001492/// } while (counter < limit);
Mike Stump1eb44332009-09-09 15:08:12 +00001493/// } while (limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001494/// objects:items count:16]);
1495/// elem = nil;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001496/// __break_label: ;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001497/// }
1498/// else
1499/// elem = nil;
1500/// }
1501///
Steve Naroffb29b4272008-04-14 22:03:09 +00001502Stmt *RewriteObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
Chris Lattner338d1e22008-01-31 05:10:40 +00001503 SourceLocation OrigEnd) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001504 assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty");
Mike Stump1eb44332009-09-09 15:08:12 +00001505 assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001506 "ObjCForCollectionStmt Statement stack mismatch");
Mike Stump1eb44332009-09-09 15:08:12 +00001507 assert(!ObjCBcLabelNo.empty() &&
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001508 "ObjCForCollectionStmt - Label No stack empty");
Mike Stump1eb44332009-09-09 15:08:12 +00001509
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001510 SourceLocation startLoc = S->getLocStart();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001511 const char *startBuf = SM->getCharacterData(startLoc);
Daniel Dunbar4087f272010-08-17 22:39:59 +00001512 llvm::StringRef elementName;
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001513 std::string elementTypeAsString;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001514 std::string buf;
1515 buf = "\n{\n\t";
1516 if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
1517 // type elem;
Chris Lattner7e24e822009-03-28 06:33:19 +00001518 NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
Ted Kremenek1ed8e2a2008-10-06 22:16:13 +00001519 QualType ElementType = cast<ValueDecl>(D)->getType();
Steve Naroffe89b8e72009-12-04 21:18:19 +00001520 if (ElementType->isObjCQualifiedIdType() ||
1521 ElementType->isObjCQualifiedInterfaceType())
1522 // Simply use 'id' for all qualified types.
1523 elementTypeAsString = "id";
1524 else
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001525 elementTypeAsString = ElementType.getAsString(Context->PrintingPolicy);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001526 buf += elementTypeAsString;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001527 buf += " ";
Daniel Dunbar4087f272010-08-17 22:39:59 +00001528 elementName = D->getName();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001529 buf += elementName;
1530 buf += ";\n\t";
1531 }
Chris Lattner06767512008-04-08 05:52:18 +00001532 else {
1533 DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
Daniel Dunbar4087f272010-08-17 22:39:59 +00001534 elementName = DR->getDecl()->getName();
Steve Naroffe89b8e72009-12-04 21:18:19 +00001535 ValueDecl *VD = cast<ValueDecl>(DR->getDecl());
1536 if (VD->getType()->isObjCQualifiedIdType() ||
1537 VD->getType()->isObjCQualifiedInterfaceType())
1538 // Simply use 'id' for all qualified types.
1539 elementTypeAsString = "id";
1540 else
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00001541 elementTypeAsString = VD->getType().getAsString(Context->PrintingPolicy);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001542 }
Mike Stump1eb44332009-09-09 15:08:12 +00001543
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001544 // struct __objcFastEnumerationState enumState = { 0 };
1545 buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
1546 // id items[16];
1547 buf += "id items[16];\n\t";
1548 // id l_collection = (id)
1549 buf += "id l_collection = (id)";
Fariborz Jahanian75712282008-01-10 00:24:29 +00001550 // Find start location of 'collection' the hard way!
1551 const char *startCollectionBuf = startBuf;
1552 startCollectionBuf += 3; // skip 'for'
1553 startCollectionBuf = strchr(startCollectionBuf, '(');
1554 startCollectionBuf++; // skip '('
1555 // find 'in' and skip it.
1556 while (*startCollectionBuf != ' ' ||
1557 *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
1558 (*(startCollectionBuf+3) != ' ' &&
1559 *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
1560 startCollectionBuf++;
1561 startCollectionBuf += 3;
Mike Stump1eb44332009-09-09 15:08:12 +00001562
1563 // Replace: "for (type element in" with string constructed thus far.
Benjamin Kramerd999b372010-02-14 14:14:16 +00001564 ReplaceText(startLoc, startCollectionBuf - startBuf, buf);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001565 // Replace ')' in for '(' type elem in collection ')' with ';'
Fariborz Jahanian75712282008-01-10 00:24:29 +00001566 SourceLocation rightParenLoc = S->getRParenLoc();
1567 const char *rparenBuf = SM->getCharacterData(rightParenLoc);
1568 SourceLocation lparenLoc = startLoc.getFileLocWithOffset(rparenBuf-startBuf);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001569 buf = ";\n\t";
Mike Stump1eb44332009-09-09 15:08:12 +00001570
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001571 // unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
1572 // objects:items count:16];
1573 // which is synthesized into:
Mike Stump1eb44332009-09-09 15:08:12 +00001574 // unsigned int limit =
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001575 // ((unsigned int (*)
1576 // (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
Mike Stump1eb44332009-09-09 15:08:12 +00001577 // (void *)objc_msgSend)((id)l_collection,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001578 // sel_registerName(
Mike Stump1eb44332009-09-09 15:08:12 +00001579 // "countByEnumeratingWithState:objects:count:"),
1580 // (struct __objcFastEnumerationState *)&state,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001581 // (id *)items, (unsigned int)16);
1582 buf += "unsigned long limit =\n\t\t";
1583 SynthCountByEnumWithState(buf);
1584 buf += ";\n\t";
1585 /// if (limit) {
1586 /// unsigned long startMutations = *enumState.mutationsPtr;
1587 /// do {
1588 /// unsigned long counter = 0;
1589 /// do {
Mike Stump1eb44332009-09-09 15:08:12 +00001590 /// if (startMutations != *enumState.mutationsPtr)
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001591 /// objc_enumerationMutation(l_collection);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001592 /// elem = (type)enumState.itemsPtr[counter++];
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001593 buf += "if (limit) {\n\t";
1594 buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
1595 buf += "do {\n\t\t";
1596 buf += "unsigned long counter = 0;\n\t\t";
1597 buf += "do {\n\t\t\t";
1598 buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
1599 buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
1600 buf += elementName;
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001601 buf += " = (";
1602 buf += elementTypeAsString;
1603 buf += ")enumState.itemsPtr[counter++];";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001604 // Replace ')' in for '(' type elem in collection ')' with all of these.
Benjamin Kramerd999b372010-02-14 14:14:16 +00001605 ReplaceText(lparenLoc, 1, buf);
Mike Stump1eb44332009-09-09 15:08:12 +00001606
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001607 /// __continue_label: ;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001608 /// } while (counter < limit);
Mike Stump1eb44332009-09-09 15:08:12 +00001609 /// } while (limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001610 /// objects:items count:16]);
1611 /// elem = nil;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001612 /// __break_label: ;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001613 /// }
1614 /// else
1615 /// elem = nil;
1616 /// }
Mike Stump1eb44332009-09-09 15:08:12 +00001617 ///
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001618 buf = ";\n\t";
1619 buf += "__continue_label_";
1620 buf += utostr(ObjCBcLabelNo.back());
1621 buf += ": ;";
1622 buf += "\n\t\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001623 buf += "} while (counter < limit);\n\t";
1624 buf += "} while (limit = ";
1625 SynthCountByEnumWithState(buf);
1626 buf += ");\n\t";
1627 buf += elementName;
Fariborz Jahanian65b0aa52010-01-08 01:29:44 +00001628 buf += " = ((";
1629 buf += elementTypeAsString;
1630 buf += ")0);\n\t";
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001631 buf += "__break_label_";
1632 buf += utostr(ObjCBcLabelNo.back());
1633 buf += ": ;\n\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001634 buf += "}\n\t";
1635 buf += "else\n\t\t";
1636 buf += elementName;
Fariborz Jahanian65b0aa52010-01-08 01:29:44 +00001637 buf += " = ((";
1638 buf += elementTypeAsString;
1639 buf += ")0);\n\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001640 buf += "}\n";
Mike Stump1eb44332009-09-09 15:08:12 +00001641
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001642 // Insert all these *after* the statement body.
Sebastian Redld3a413d2009-04-26 20:35:05 +00001643 // FIXME: If this should support Obj-C++, support CXXTryStmt
Steve Naroff600e4e82008-07-21 18:26:02 +00001644 if (isa<CompoundStmt>(S->getBody())) {
1645 SourceLocation endBodyLoc = OrigEnd.getFileLocWithOffset(1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001646 InsertText(endBodyLoc, buf);
Steve Naroff600e4e82008-07-21 18:26:02 +00001647 } else {
1648 /* Need to treat single statements specially. For example:
1649 *
1650 * for (A *a in b) if (stuff()) break;
1651 * for (A *a in b) xxxyy;
1652 *
1653 * The following code simply scans ahead to the semi to find the actual end.
1654 */
1655 const char *stmtBuf = SM->getCharacterData(OrigEnd);
1656 const char *semiBuf = strchr(stmtBuf, ';');
1657 assert(semiBuf && "Can't find ';'");
1658 SourceLocation endBodyLoc = OrigEnd.getFileLocWithOffset(semiBuf-stmtBuf+1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001659 InsertText(endBodyLoc, buf);
Steve Naroff600e4e82008-07-21 18:26:02 +00001660 }
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001661 Stmts.pop_back();
1662 ObjCBcLabelNo.pop_back();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001663 return 0;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001664}
1665
Mike Stump1eb44332009-09-09 15:08:12 +00001666/// RewriteObjCSynchronizedStmt -
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001667/// This routine rewrites @synchronized(expr) stmt;
1668/// into:
1669/// objc_sync_enter(expr);
1670/// @try stmt @finally { objc_sync_exit(expr); }
1671///
Steve Naroffb29b4272008-04-14 22:03:09 +00001672Stmt *RewriteObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001673 // Get the start location and compute the semi location.
1674 SourceLocation startLoc = S->getLocStart();
1675 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001676
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001677 assert((*startBuf == '@') && "bogus @synchronized location");
Mike Stump1eb44332009-09-09 15:08:12 +00001678
1679 std::string buf;
Steve Naroff3498cc92008-08-21 13:03:03 +00001680 buf = "objc_sync_enter((id)";
1681 const char *lparenBuf = startBuf;
1682 while (*lparenBuf != '(') lparenBuf++;
Benjamin Kramerd999b372010-02-14 14:14:16 +00001683 ReplaceText(startLoc, lparenBuf-startBuf+1, buf);
Mike Stump1eb44332009-09-09 15:08:12 +00001684 // We can't use S->getSynchExpr()->getLocEnd() to find the end location, since
1685 // the sync expression is typically a message expression that's already
Steve Naroffc7089f12008-08-19 13:04:19 +00001686 // been rewritten! (which implies the SourceLocation's are invalid).
1687 SourceLocation endLoc = S->getSynchBody()->getLocStart();
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001688 const char *endBuf = SM->getCharacterData(endLoc);
Steve Naroffc7089f12008-08-19 13:04:19 +00001689 while (*endBuf != ')') endBuf--;
1690 SourceLocation rparenLoc = startLoc.getFileLocWithOffset(endBuf-startBuf);
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001691 buf = ");\n";
1692 // declare a new scope with two variables, _stack and _rethrow.
1693 buf += "/* @try scope begin */ \n{ struct _objc_exception_data {\n";
1694 buf += "int buf[18/*32-bit i386*/];\n";
1695 buf += "char *pointers[4];} _stack;\n";
1696 buf += "id volatile _rethrow = 0;\n";
1697 buf += "objc_exception_try_enter(&_stack);\n";
1698 buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001699 ReplaceText(rparenLoc, 1, buf);
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001700 startLoc = S->getSynchBody()->getLocEnd();
1701 startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001702
Steve Naroffc7089f12008-08-19 13:04:19 +00001703 assert((*startBuf == '}') && "bogus @synchronized block");
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001704 SourceLocation lastCurlyLoc = startLoc;
1705 buf = "}\nelse {\n";
1706 buf += " _rethrow = objc_exception_extract(&_stack);\n";
Steve Naroff621edce2009-04-29 16:37:50 +00001707 buf += "}\n";
1708 buf += "{ /* implicit finally clause */\n";
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001709 buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
Steve Naroffb85e77a2009-12-05 21:43:12 +00001710
1711 std::string syncBuf;
1712 syncBuf += " objc_sync_exit(";
John McCall9d125032010-01-15 18:39:57 +00001713 Expr *syncExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00001714 CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00001715 S->getSynchExpr());
Ted Kremeneka95d3752008-09-13 05:16:45 +00001716 std::string syncExprBufS;
1717 llvm::raw_string_ostream syncExprBuf(syncExprBufS);
Chris Lattnere4f21422009-06-30 01:26:17 +00001718 syncExpr->printPretty(syncExprBuf, *Context, 0,
1719 PrintingPolicy(LangOpts));
Steve Naroffb85e77a2009-12-05 21:43:12 +00001720 syncBuf += syncExprBuf.str();
1721 syncBuf += ");";
1722
1723 buf += syncBuf;
1724 buf += "\n if (_rethrow) objc_exception_throw(_rethrow);\n";
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001725 buf += "}\n";
1726 buf += "}";
Mike Stump1eb44332009-09-09 15:08:12 +00001727
Benjamin Kramerd999b372010-02-14 14:14:16 +00001728 ReplaceText(lastCurlyLoc, 1, buf);
Steve Naroffb85e77a2009-12-05 21:43:12 +00001729
1730 bool hasReturns = false;
1731 HasReturnStmts(S->getSynchBody(), hasReturns);
1732 if (hasReturns)
1733 RewriteSyncReturnStmts(S->getSynchBody(), syncBuf);
1734
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001735 return 0;
1736}
1737
Steve Naroffb85e77a2009-12-05 21:43:12 +00001738void RewriteObjC::WarnAboutReturnGotoStmts(Stmt *S)
1739{
Steve Naroff8c565152008-12-05 17:03:39 +00001740 // Perform a bottom up traversal of all children.
1741 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1742 CI != E; ++CI)
1743 if (*CI)
Steve Naroffb85e77a2009-12-05 21:43:12 +00001744 WarnAboutReturnGotoStmts(*CI);
Steve Naroff8c565152008-12-05 17:03:39 +00001745
Steve Naroffb85e77a2009-12-05 21:43:12 +00001746 if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
Mike Stump1eb44332009-09-09 15:08:12 +00001747 Diags.Report(Context->getFullLoc(S->getLocStart()),
Steve Naroff8c565152008-12-05 17:03:39 +00001748 TryFinallyContainsReturnDiag);
1749 }
1750 return;
1751}
1752
Steve Naroffb85e77a2009-12-05 21:43:12 +00001753void RewriteObjC::HasReturnStmts(Stmt *S, bool &hasReturns)
1754{
1755 // Perform a bottom up traversal of all children.
1756 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1757 CI != E; ++CI)
1758 if (*CI)
1759 HasReturnStmts(*CI, hasReturns);
1760
1761 if (isa<ReturnStmt>(S))
1762 hasReturns = true;
1763 return;
1764}
1765
1766void RewriteObjC::RewriteTryReturnStmts(Stmt *S) {
1767 // Perform a bottom up traversal of all children.
1768 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1769 CI != E; ++CI)
1770 if (*CI) {
1771 RewriteTryReturnStmts(*CI);
1772 }
1773 if (isa<ReturnStmt>(S)) {
1774 SourceLocation startLoc = S->getLocStart();
1775 const char *startBuf = SM->getCharacterData(startLoc);
1776
1777 const char *semiBuf = strchr(startBuf, ';');
1778 assert((*semiBuf == ';') && "RewriteTryReturnStmts: can't find ';'");
1779 SourceLocation onePastSemiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
1780
1781 std::string buf;
1782 buf = "{ objc_exception_try_exit(&_stack); return";
1783
Benjamin Kramerd999b372010-02-14 14:14:16 +00001784 ReplaceText(startLoc, 6, buf);
1785 InsertText(onePastSemiLoc, "}");
Steve Naroffb85e77a2009-12-05 21:43:12 +00001786 }
1787 return;
1788}
1789
1790void RewriteObjC::RewriteSyncReturnStmts(Stmt *S, std::string syncExitBuf) {
1791 // Perform a bottom up traversal of all children.
1792 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1793 CI != E; ++CI)
1794 if (*CI) {
1795 RewriteSyncReturnStmts(*CI, syncExitBuf);
1796 }
1797 if (isa<ReturnStmt>(S)) {
1798 SourceLocation startLoc = S->getLocStart();
1799 const char *startBuf = SM->getCharacterData(startLoc);
1800
1801 const char *semiBuf = strchr(startBuf, ';');
1802 assert((*semiBuf == ';') && "RewriteSyncReturnStmts: can't find ';'");
1803 SourceLocation onePastSemiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
1804
1805 std::string buf;
1806 buf = "{ objc_exception_try_exit(&_stack);";
1807 buf += syncExitBuf;
1808 buf += " return";
1809
Benjamin Kramerd999b372010-02-14 14:14:16 +00001810 ReplaceText(startLoc, 6, buf);
1811 InsertText(onePastSemiLoc, "}");
Steve Naroffb85e77a2009-12-05 21:43:12 +00001812 }
1813 return;
1814}
1815
Steve Naroffb29b4272008-04-14 22:03:09 +00001816Stmt *RewriteObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
Steve Naroff75730982007-11-07 04:08:17 +00001817 // Get the start location and compute the semi location.
1818 SourceLocation startLoc = S->getLocStart();
1819 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001820
Steve Naroff75730982007-11-07 04:08:17 +00001821 assert((*startBuf == '@') && "bogus @try location");
1822
1823 std::string buf;
1824 // declare a new scope with two variables, _stack and _rethrow.
1825 buf = "/* @try scope begin */ { struct _objc_exception_data {\n";
1826 buf += "int buf[18/*32-bit i386*/];\n";
1827 buf += "char *pointers[4];} _stack;\n";
1828 buf += "id volatile _rethrow = 0;\n";
1829 buf += "objc_exception_try_enter(&_stack);\n";
Steve Naroff21867b12007-11-07 18:43:40 +00001830 buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
Steve Naroff75730982007-11-07 04:08:17 +00001831
Benjamin Kramerd999b372010-02-14 14:14:16 +00001832 ReplaceText(startLoc, 4, buf);
Mike Stump1eb44332009-09-09 15:08:12 +00001833
Steve Naroff75730982007-11-07 04:08:17 +00001834 startLoc = S->getTryBody()->getLocEnd();
1835 startBuf = SM->getCharacterData(startLoc);
1836
1837 assert((*startBuf == '}') && "bogus @try block");
Mike Stump1eb44332009-09-09 15:08:12 +00001838
Steve Naroff75730982007-11-07 04:08:17 +00001839 SourceLocation lastCurlyLoc = startLoc;
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001840 if (S->getNumCatchStmts()) {
Steve Naroffc9ba1722008-07-16 15:31:30 +00001841 startLoc = startLoc.getFileLocWithOffset(1);
1842 buf = " /* @catch begin */ else {\n";
1843 buf += " id _caught = objc_exception_extract(&_stack);\n";
1844 buf += " objc_exception_try_enter (&_stack);\n";
1845 buf += " if (_setjmp(_stack.buf))\n";
1846 buf += " _rethrow = objc_exception_extract(&_stack);\n";
1847 buf += " else { /* @catch continue */";
Mike Stump1eb44332009-09-09 15:08:12 +00001848
Benjamin Kramerd999b372010-02-14 14:14:16 +00001849 InsertText(startLoc, buf);
Steve Naroff8bd3dc62008-09-09 19:59:12 +00001850 } else { /* no catch list */
1851 buf = "}\nelse {\n";
1852 buf += " _rethrow = objc_exception_extract(&_stack);\n";
1853 buf += "}";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001854 ReplaceText(lastCurlyLoc, 1, buf);
Steve Naroffc9ba1722008-07-16 15:31:30 +00001855 }
Steve Naroff75730982007-11-07 04:08:17 +00001856 bool sawIdTypedCatch = false;
1857 Stmt *lastCatchBody = 0;
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001858 for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
1859 ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
Douglas Gregorc00d8e12010-04-26 16:46:50 +00001860 VarDecl *catchDecl = Catch->getCatchParamDecl();
Steve Naroff75730982007-11-07 04:08:17 +00001861
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001862 if (I == 0)
Steve Naroff75730982007-11-07 04:08:17 +00001863 buf = "if ("; // we are generating code for the first catch clause
1864 else
1865 buf = "else if (";
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001866 startLoc = Catch->getLocStart();
Steve Naroff75730982007-11-07 04:08:17 +00001867 startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001868
Steve Naroff75730982007-11-07 04:08:17 +00001869 assert((*startBuf == '@') && "bogus @catch location");
Mike Stump1eb44332009-09-09 15:08:12 +00001870
Steve Naroff75730982007-11-07 04:08:17 +00001871 const char *lParenLoc = strchr(startBuf, '(');
1872
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001873 if (Catch->hasEllipsis()) {
Steve Naroffe12e6922008-02-01 20:02:07 +00001874 // Now rewrite the body...
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001875 lastCatchBody = Catch->getCatchBody();
Steve Naroffe12e6922008-02-01 20:02:07 +00001876 SourceLocation bodyLoc = lastCatchBody->getLocStart();
1877 const char *bodyBuf = SM->getCharacterData(bodyLoc);
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001878 assert(*SM->getCharacterData(Catch->getRParenLoc()) == ')' &&
Chris Lattner06767512008-04-08 05:52:18 +00001879 "bogus @catch paren location");
Steve Naroffe12e6922008-02-01 20:02:07 +00001880 assert((*bodyBuf == '{') && "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001881
Steve Naroffe12e6922008-02-01 20:02:07 +00001882 buf += "1) { id _tmp = _caught;";
Daniel Dunbard7407dc2009-08-19 19:10:30 +00001883 Rewrite.ReplaceText(startLoc, bodyBuf-startBuf+1, buf);
Steve Naroff7ba138a2009-03-03 19:52:17 +00001884 } else if (catchDecl) {
1885 QualType t = catchDecl->getType();
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001886 if (t == Context->getObjCIdType()) {
Steve Naroff75730982007-11-07 04:08:17 +00001887 buf += "1) { ";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001888 ReplaceText(startLoc, lParenLoc-startBuf+1, buf);
Steve Naroff75730982007-11-07 04:08:17 +00001889 sawIdTypedCatch = true;
John McCall506b57e2010-05-17 21:00:27 +00001890 } else if (const ObjCObjectPointerType *Ptr =
1891 t->getAs<ObjCObjectPointerType>()) {
1892 // Should be a pointer to a class.
1893 ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
1894 if (IDecl) {
Steve Naroff21867b12007-11-07 18:43:40 +00001895 buf += "objc_exception_match((struct objc_class *)objc_getClass(\"";
John McCall506b57e2010-05-17 21:00:27 +00001896 buf += IDecl->getNameAsString();
Steve Naroff21867b12007-11-07 18:43:40 +00001897 buf += "\"), (struct objc_object *)_caught)) { ";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001898 ReplaceText(startLoc, lParenLoc-startBuf+1, buf);
Steve Naroff75730982007-11-07 04:08:17 +00001899 }
1900 }
1901 // Now rewrite the body...
Douglas Gregor8f5e3dd2010-04-23 22:50:49 +00001902 lastCatchBody = Catch->getCatchBody();
1903 SourceLocation rParenLoc = Catch->getRParenLoc();
Steve Naroff75730982007-11-07 04:08:17 +00001904 SourceLocation bodyLoc = lastCatchBody->getLocStart();
1905 const char *bodyBuf = SM->getCharacterData(bodyLoc);
1906 const char *rParenBuf = SM->getCharacterData(rParenLoc);
1907 assert((*rParenBuf == ')') && "bogus @catch paren location");
1908 assert((*bodyBuf == '{') && "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001909
Mike Stump1eb44332009-09-09 15:08:12 +00001910 // Here we replace ") {" with "= _caught;" (which initializes and
Steve Naroff75730982007-11-07 04:08:17 +00001911 // declares the @catch parameter).
Benjamin Kramerd999b372010-02-14 14:14:16 +00001912 ReplaceText(rParenLoc, bodyBuf-rParenBuf+1, " = _caught;");
Steve Naroff7ba138a2009-03-03 19:52:17 +00001913 } else {
Steve Naroff75730982007-11-07 04:08:17 +00001914 assert(false && "@catch rewrite bug");
Steve Naroff2bd03922007-11-07 15:32:26 +00001915 }
Steve Naroff75730982007-11-07 04:08:17 +00001916 }
1917 // Complete the catch list...
1918 if (lastCatchBody) {
1919 SourceLocation bodyLoc = lastCatchBody->getLocEnd();
Chris Lattner06767512008-04-08 05:52:18 +00001920 assert(*SM->getCharacterData(bodyLoc) == '}' &&
1921 "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001922
Steve Naroff378f47a2008-09-11 15:29:03 +00001923 // Insert the last (implicit) else clause *before* the right curly brace.
1924 bodyLoc = bodyLoc.getFileLocWithOffset(-1);
1925 buf = "} /* last catch end */\n";
1926 buf += "else {\n";
1927 buf += " _rethrow = _caught;\n";
1928 buf += " objc_exception_try_exit(&_stack);\n";
1929 buf += "} } /* @catch end */\n";
1930 if (!S->getFinallyStmt())
1931 buf += "}\n";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001932 InsertText(bodyLoc, buf);
Mike Stump1eb44332009-09-09 15:08:12 +00001933
Steve Naroff75730982007-11-07 04:08:17 +00001934 // Set lastCurlyLoc
1935 lastCurlyLoc = lastCatchBody->getLocEnd();
1936 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001937 if (ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt()) {
Steve Naroff75730982007-11-07 04:08:17 +00001938 startLoc = finalStmt->getLocStart();
1939 startBuf = SM->getCharacterData(startLoc);
1940 assert((*startBuf == '@') && "bogus @finally start");
Mike Stump1eb44332009-09-09 15:08:12 +00001941
Benjamin Kramerd999b372010-02-14 14:14:16 +00001942 ReplaceText(startLoc, 8, "/* @finally */");
Mike Stump1eb44332009-09-09 15:08:12 +00001943
Steve Naroff75730982007-11-07 04:08:17 +00001944 Stmt *body = finalStmt->getFinallyBody();
1945 SourceLocation startLoc = body->getLocStart();
1946 SourceLocation endLoc = body->getLocEnd();
Chris Lattner06767512008-04-08 05:52:18 +00001947 assert(*SM->getCharacterData(startLoc) == '{' &&
1948 "bogus @finally body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001949 assert(*SM->getCharacterData(endLoc) == '}' &&
Chris Lattner06767512008-04-08 05:52:18 +00001950 "bogus @finally body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001951
Steve Naroff75730982007-11-07 04:08:17 +00001952 startLoc = startLoc.getFileLocWithOffset(1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001953 InsertText(startLoc, " if (!_rethrow) objc_exception_try_exit(&_stack);\n");
Steve Naroff75730982007-11-07 04:08:17 +00001954 endLoc = endLoc.getFileLocWithOffset(-1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001955 InsertText(endLoc, " if (_rethrow) objc_exception_throw(_rethrow);\n");
Mike Stump1eb44332009-09-09 15:08:12 +00001956
Steve Naroff75730982007-11-07 04:08:17 +00001957 // Set lastCurlyLoc
1958 lastCurlyLoc = body->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00001959
Steve Naroff8c565152008-12-05 17:03:39 +00001960 // Now check for any return/continue/go statements within the @try.
Steve Naroffb85e77a2009-12-05 21:43:12 +00001961 WarnAboutReturnGotoStmts(S->getTryBody());
Steve Naroff378f47a2008-09-11 15:29:03 +00001962 } else { /* no finally clause - make sure we synthesize an implicit one */
1963 buf = "{ /* implicit finally clause */\n";
1964 buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
1965 buf += " if (_rethrow) objc_exception_throw(_rethrow);\n";
1966 buf += "}";
Benjamin Kramerd999b372010-02-14 14:14:16 +00001967 ReplaceText(lastCurlyLoc, 1, buf);
Steve Naroffb85e77a2009-12-05 21:43:12 +00001968
1969 // Now check for any return/continue/go statements within the @try.
1970 // The implicit finally clause won't called if the @try contains any
1971 // jump statements.
1972 bool hasReturns = false;
1973 HasReturnStmts(S->getTryBody(), hasReturns);
1974 if (hasReturns)
1975 RewriteTryReturnStmts(S->getTryBody());
Steve Naroff75730982007-11-07 04:08:17 +00001976 }
1977 // Now emit the final closing curly brace...
1978 lastCurlyLoc = lastCurlyLoc.getFileLocWithOffset(1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00001979 InsertText(lastCurlyLoc, " } /* @try scope end */\n");
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00001980 return 0;
1981}
1982
Mike Stump1eb44332009-09-09 15:08:12 +00001983// This can't be done with ReplaceStmt(S, ThrowExpr), since
1984// the throw expression is typically a message expression that's already
Steve Naroff2bd03922007-11-07 15:32:26 +00001985// been rewritten! (which implies the SourceLocation's are invalid).
Steve Naroffb29b4272008-04-14 22:03:09 +00001986Stmt *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
Steve Naroff2bd03922007-11-07 15:32:26 +00001987 // Get the start location and compute the semi location.
1988 SourceLocation startLoc = S->getLocStart();
1989 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001990
Steve Naroff2bd03922007-11-07 15:32:26 +00001991 assert((*startBuf == '@') && "bogus @throw location");
1992
1993 std::string buf;
1994 /* void objc_exception_throw(id) __attribute__((noreturn)); */
Steve Naroff20ebf8f2008-01-19 00:42:38 +00001995 if (S->getThrowExpr())
1996 buf = "objc_exception_throw(";
1997 else // add an implicit argument
1998 buf = "objc_exception_throw(_caught";
Mike Stump1eb44332009-09-09 15:08:12 +00001999
Steve Naroff4ba0acb2008-07-25 15:41:30 +00002000 // handle "@ throw" correctly.
2001 const char *wBuf = strchr(startBuf, 'w');
2002 assert((*wBuf == 'w') && "@throw: can't find 'w'");
Benjamin Kramerd999b372010-02-14 14:14:16 +00002003 ReplaceText(startLoc, wBuf-startBuf+1, buf);
Mike Stump1eb44332009-09-09 15:08:12 +00002004
Steve Naroff2bd03922007-11-07 15:32:26 +00002005 const char *semiBuf = strchr(startBuf, ';');
2006 assert((*semiBuf == ';') && "@throw: can't find ';'");
2007 SourceLocation semiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00002008 ReplaceText(semiLoc, 1, ");");
Steve Naroff2bd03922007-11-07 15:32:26 +00002009 return 0;
2010}
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00002011
Steve Naroffb29b4272008-04-14 22:03:09 +00002012Stmt *RewriteObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
Chris Lattner01c57482007-10-17 22:35:30 +00002013 // Create a new string expression.
2014 QualType StrType = Context->getPointerType(Context->CharTy);
Anders Carlsson85f9bce2007-10-29 05:01:08 +00002015 std::string StrEncoding;
Daniel Dunbar0d504c12008-10-17 20:21:44 +00002016 Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
Chris Lattner2085fd62009-02-18 06:40:38 +00002017 Expr *Replacement = StringLiteral::Create(*Context,StrEncoding.c_str(),
2018 StrEncoding.length(), false,StrType,
2019 SourceLocation());
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00002020 ReplaceStmt(Exp, Replacement);
Mike Stump1eb44332009-09-09 15:08:12 +00002021
Chris Lattner07506182007-11-30 22:53:43 +00002022 // Replace this subexpr in the parent.
Steve Naroff4c3580e2008-12-04 23:50:32 +00002023 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Chris Lattnere64b7772007-10-24 16:57:36 +00002024 return Replacement;
Chris Lattner311ff022007-10-16 22:36:42 +00002025}
2026
Steve Naroffb29b4272008-04-14 22:03:09 +00002027Stmt *RewriteObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
Steve Naroff1a937642008-12-22 22:16:07 +00002028 if (!SelGetUidFunctionDecl)
2029 SynthSelGetUidFunctionDecl();
Steve Naroffb42f8412007-11-05 14:50:49 +00002030 assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
2031 // Create a call to sel_registerName("selName").
2032 llvm::SmallVector<Expr*, 8> SelExprs;
2033 QualType argType = Context->getPointerType(Context->CharTy);
Mike Stump1eb44332009-09-09 15:08:12 +00002034 SelExprs.push_back(StringLiteral::Create(*Context,
Ted Kremenek6e94ef52009-02-06 19:55:15 +00002035 Exp->getSelector().getAsString().c_str(),
Chris Lattner077bf5e2008-11-24 03:33:13 +00002036 Exp->getSelector().getAsString().size(),
Chris Lattner726e1682009-02-18 05:49:11 +00002037 false, argType, SourceLocation()));
Steve Naroffb42f8412007-11-05 14:50:49 +00002038 CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
2039 &SelExprs[0], SelExprs.size());
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00002040 ReplaceStmt(Exp, SelExp);
Steve Naroff4c3580e2008-12-04 23:50:32 +00002041 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroffb42f8412007-11-05 14:50:49 +00002042 return SelExp;
2043}
2044
Steve Naroffb29b4272008-04-14 22:03:09 +00002045CallExpr *RewriteObjC::SynthesizeCallToFunctionDecl(
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002046 FunctionDecl *FD, Expr **args, unsigned nargs, SourceLocation StartLoc,
2047 SourceLocation EndLoc) {
Steve Naroffebf2b562007-10-23 23:50:29 +00002048 // Get the type, we will need to reference it in a couple spots.
Steve Naroff934f2762007-10-24 22:48:43 +00002049 QualType msgSendType = FD->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00002050
Steve Naroffebf2b562007-10-23 23:50:29 +00002051 // Create a reference to the objc_msgSend() declaration.
Ted Kremenek8189cde2009-02-07 01:47:29 +00002052 DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, msgSendType, SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00002053
Steve Naroffebf2b562007-10-23 23:50:29 +00002054 // Now, we cast the reference to a pointer to the objc_msgSend type.
Chris Lattnerf04da132007-10-24 17:06:59 +00002055 QualType pToFunc = Context->getPointerType(msgSendType);
Anders Carlsson88465d32010-04-23 22:18:37 +00002056 ImplicitCastExpr *ICE =
John McCall2de56d12010-08-25 11:45:40 +00002057 ImplicitCastExpr::Create(*Context, pToFunc, CK_Unknown,
John McCall5baba9d2010-08-25 10:28:54 +00002058 DRE, 0, VK_RValue);
Mike Stump1eb44332009-09-09 15:08:12 +00002059
John McCall183700f2009-09-21 23:43:11 +00002060 const FunctionType *FT = msgSendType->getAs<FunctionType>();
Mike Stump1eb44332009-09-09 15:08:12 +00002061
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002062 CallExpr *Exp =
Douglas Gregor5291c3c2010-07-13 08:18:22 +00002063 new (Context) CallExpr(*Context, ICE, args, nargs,
2064 FT->getCallResultType(*Context), EndLoc);
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002065 return Exp;
Steve Naroff934f2762007-10-24 22:48:43 +00002066}
2067
Steve Naroffd5255f52007-11-01 13:24:47 +00002068static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
2069 const char *&startRef, const char *&endRef) {
2070 while (startBuf < endBuf) {
2071 if (*startBuf == '<')
2072 startRef = startBuf; // mark the start.
2073 if (*startBuf == '>') {
Steve Naroff32174822007-11-09 12:50:28 +00002074 if (startRef && *startRef == '<') {
2075 endRef = startBuf; // mark the end.
2076 return true;
2077 }
2078 return false;
Steve Naroffd5255f52007-11-01 13:24:47 +00002079 }
2080 startBuf++;
2081 }
2082 return false;
2083}
2084
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002085static void scanToNextArgument(const char *&argRef) {
2086 int angle = 0;
2087 while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
2088 if (*argRef == '<')
2089 angle++;
2090 else if (*argRef == '>')
2091 angle--;
2092 argRef++;
2093 }
2094 assert(angle == 0 && "scanToNextArgument - bad protocol type syntax");
2095}
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00002096
Steve Naroffb29b4272008-04-14 22:03:09 +00002097bool RewriteObjC::needToScanForQualifiers(QualType T) {
Fariborz Jahanian32132a02010-02-03 21:29:28 +00002098 if (T->isObjCQualifiedIdType())
2099 return true;
Fariborz Jahanian84aa9462010-02-02 18:35:07 +00002100 if (const PointerType *PT = T->getAs<PointerType>()) {
2101 if (PT->getPointeeType()->isObjCQualifiedIdType())
2102 return true;
2103 }
2104 if (T->isObjCObjectPointerType()) {
2105 T = T->getPointeeType();
2106 return T->isObjCQualifiedInterfaceType();
2107 }
2108 return false;
Steve Naroffd5255f52007-11-01 13:24:47 +00002109}
2110
Steve Naroff4f95b752008-07-29 18:15:38 +00002111void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
2112 QualType Type = E->getType();
2113 if (needToScanForQualifiers(Type)) {
Steve Naroffcda658e2008-11-19 21:15:47 +00002114 SourceLocation Loc, EndLoc;
Mike Stump1eb44332009-09-09 15:08:12 +00002115
Steve Naroffcda658e2008-11-19 21:15:47 +00002116 if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
2117 Loc = ECE->getLParenLoc();
2118 EndLoc = ECE->getRParenLoc();
2119 } else {
2120 Loc = E->getLocStart();
2121 EndLoc = E->getLocEnd();
2122 }
2123 // This will defend against trying to rewrite synthesized expressions.
2124 if (Loc.isInvalid() || EndLoc.isInvalid())
2125 return;
2126
Steve Naroff4f95b752008-07-29 18:15:38 +00002127 const char *startBuf = SM->getCharacterData(Loc);
Steve Naroffcda658e2008-11-19 21:15:47 +00002128 const char *endBuf = SM->getCharacterData(EndLoc);
Steve Naroff4f95b752008-07-29 18:15:38 +00002129 const char *startRef = 0, *endRef = 0;
2130 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2131 // Get the locations of the startRef, endRef.
2132 SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-startBuf);
2133 SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-startBuf+1);
2134 // Comment out the protocol references.
Benjamin Kramerd999b372010-02-14 14:14:16 +00002135 InsertText(LessLoc, "/*");
2136 InsertText(GreaterLoc, "*/");
Steve Naroff4f95b752008-07-29 18:15:38 +00002137 }
2138 }
2139}
2140
Steve Naroffb29b4272008-04-14 22:03:09 +00002141void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002142 SourceLocation Loc;
2143 QualType Type;
Douglas Gregor72564e72009-02-26 23:50:07 +00002144 const FunctionProtoType *proto = 0;
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002145 if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
2146 Loc = VD->getLocation();
2147 Type = VD->getType();
2148 }
2149 else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
2150 Loc = FD->getLocation();
2151 // Check for ObjC 'id' and class types that have been adorned with protocol
2152 // information (id<p>, C<p>*). The protocol references need to be rewritten!
John McCall183700f2009-09-21 23:43:11 +00002153 const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002154 assert(funcType && "missing function type");
Douglas Gregor72564e72009-02-26 23:50:07 +00002155 proto = dyn_cast<FunctionProtoType>(funcType);
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002156 if (!proto)
2157 return;
2158 Type = proto->getResultType();
2159 }
Steve Naroff3d7e7862009-12-05 15:55:59 +00002160 else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
2161 Loc = FD->getLocation();
2162 Type = FD->getType();
2163 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002164 else
2165 return;
Mike Stump1eb44332009-09-09 15:08:12 +00002166
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002167 if (needToScanForQualifiers(Type)) {
Steve Naroffd5255f52007-11-01 13:24:47 +00002168 // Since types are unique, we need to scan the buffer.
Mike Stump1eb44332009-09-09 15:08:12 +00002169
Steve Naroffd5255f52007-11-01 13:24:47 +00002170 const char *endBuf = SM->getCharacterData(Loc);
2171 const char *startBuf = endBuf;
Steve Naroff6cafbf22008-05-31 05:02:17 +00002172 while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
Steve Naroffd5255f52007-11-01 13:24:47 +00002173 startBuf--; // scan backward (from the decl location) for return type.
2174 const char *startRef = 0, *endRef = 0;
2175 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2176 // Get the locations of the startRef, endRef.
2177 SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-endBuf);
2178 SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-endBuf+1);
2179 // Comment out the protocol references.
Benjamin Kramerd999b372010-02-14 14:14:16 +00002180 InsertText(LessLoc, "/*");
2181 InsertText(GreaterLoc, "*/");
Steve Naroff9165ad32007-10-31 04:38:33 +00002182 }
2183 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002184 if (!proto)
2185 return; // most likely, was a variable
Steve Naroffd5255f52007-11-01 13:24:47 +00002186 // Now check arguments.
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002187 const char *startBuf = SM->getCharacterData(Loc);
2188 const char *startFuncBuf = startBuf;
Steve Naroffd5255f52007-11-01 13:24:47 +00002189 for (unsigned i = 0; i < proto->getNumArgs(); i++) {
2190 if (needToScanForQualifiers(proto->getArgType(i))) {
2191 // Since types are unique, we need to scan the buffer.
Mike Stump1eb44332009-09-09 15:08:12 +00002192
Steve Naroffd5255f52007-11-01 13:24:47 +00002193 const char *endBuf = startBuf;
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002194 // scan forward (from the decl location) for argument types.
2195 scanToNextArgument(endBuf);
Steve Naroffd5255f52007-11-01 13:24:47 +00002196 const char *startRef = 0, *endRef = 0;
2197 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2198 // Get the locations of the startRef, endRef.
Mike Stump1eb44332009-09-09 15:08:12 +00002199 SourceLocation LessLoc =
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00002200 Loc.getFileLocWithOffset(startRef-startFuncBuf);
Mike Stump1eb44332009-09-09 15:08:12 +00002201 SourceLocation GreaterLoc =
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00002202 Loc.getFileLocWithOffset(endRef-startFuncBuf+1);
Steve Naroffd5255f52007-11-01 13:24:47 +00002203 // Comment out the protocol references.
Benjamin Kramerd999b372010-02-14 14:14:16 +00002204 InsertText(LessLoc, "/*");
2205 InsertText(GreaterLoc, "*/");
Steve Naroffd5255f52007-11-01 13:24:47 +00002206 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002207 startBuf = ++endBuf;
2208 }
2209 else {
Steve Naroffaba49d12008-08-06 15:58:23 +00002210 // If the function name is derived from a macro expansion, then the
2211 // argument buffer will not follow the name. Need to speak with Chris.
2212 while (*startBuf && *startBuf != ')' && *startBuf != ',')
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002213 startBuf++; // scan forward (from the decl location) for argument types.
2214 startBuf++;
2215 }
Steve Naroffd5255f52007-11-01 13:24:47 +00002216 }
Steve Naroff9165ad32007-10-31 04:38:33 +00002217}
2218
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00002219void RewriteObjC::RewriteTypeOfDecl(VarDecl *ND) {
2220 QualType QT = ND->getType();
2221 const Type* TypePtr = QT->getAs<Type>();
2222 if (!isa<TypeOfExprType>(TypePtr))
2223 return;
2224 while (isa<TypeOfExprType>(TypePtr)) {
2225 const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
2226 QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
2227 TypePtr = QT->getAs<Type>();
2228 }
2229 // FIXME. This will not work for multiple declarators; as in:
2230 // __typeof__(a) b,c,d;
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00002231 std::string TypeAsString(QT.getAsString(Context->PrintingPolicy));
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00002232 SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
2233 const char *startBuf = SM->getCharacterData(DeclLoc);
2234 if (ND->getInit()) {
2235 std::string Name(ND->getNameAsString());
2236 TypeAsString += " " + Name + " = ";
2237 Expr *E = ND->getInit();
2238 SourceLocation startLoc;
2239 if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
2240 startLoc = ECE->getLParenLoc();
2241 else
2242 startLoc = E->getLocStart();
2243 startLoc = SM->getInstantiationLoc(startLoc);
2244 const char *endBuf = SM->getCharacterData(startLoc);
Benjamin Kramerd999b372010-02-14 14:14:16 +00002245 ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00002246 }
2247 else {
2248 SourceLocation X = ND->getLocEnd();
2249 X = SM->getInstantiationLoc(X);
2250 const char *endBuf = SM->getCharacterData(X);
Benjamin Kramerd999b372010-02-14 14:14:16 +00002251 ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00002252 }
2253}
2254
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002255// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
Steve Naroffb29b4272008-04-14 22:03:09 +00002256void RewriteObjC::SynthSelGetUidFunctionDecl() {
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002257 IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
2258 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002259 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002260 QualType getFuncType = Context->getFunctionType(Context->getObjCSelType(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002261 &ArgTys[0], ArgTys.size(),
2262 false /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002263 false, false, 0, 0,
2264 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002265 SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002266 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002267 SelGetUidIdent, getFuncType, 0,
John McCalld931b082010-08-26 03:08:43 +00002268 SC_Extern,
2269 SC_None, false);
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002270}
2271
Steve Naroffb29b4272008-04-14 22:03:09 +00002272void RewriteObjC::RewriteFunctionDecl(FunctionDecl *FD) {
Steve Naroff09b266e2007-10-30 23:14:51 +00002273 // declared in <objc/objc.h>
Douglas Gregor51efe562009-01-09 01:47:02 +00002274 if (FD->getIdentifier() &&
Daniel Dunbar4087f272010-08-17 22:39:59 +00002275 FD->getName() == "sel_registerName") {
Steve Naroff09b266e2007-10-30 23:14:51 +00002276 SelGetUidFunctionDecl = FD;
Steve Naroff9165ad32007-10-31 04:38:33 +00002277 return;
2278 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002279 RewriteObjCQualifiedInterfaceTypes(FD);
Steve Naroff09b266e2007-10-30 23:14:51 +00002280}
2281
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00002282void RewriteObjC::RewriteBlockPointerType(std::string& Str, QualType Type) {
2283 std::string TypeString(Type.getAsString(Context->PrintingPolicy));
Fariborz Jahanian52b2e1e2010-02-12 17:52:31 +00002284 const char *argPtr = TypeString.c_str();
2285 if (!strchr(argPtr, '^')) {
2286 Str += TypeString;
2287 return;
2288 }
2289 while (*argPtr) {
2290 Str += (*argPtr == '^' ? '*' : *argPtr);
2291 argPtr++;
2292 }
2293}
2294
Fariborz Jahaniane8c28df2010-02-16 16:21:26 +00002295// FIXME. Consolidate this routine with RewriteBlockPointerType.
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00002296void RewriteObjC::RewriteBlockPointerTypeVariable(std::string& Str,
2297 ValueDecl *VD) {
Fariborz Jahaniane8c28df2010-02-16 16:21:26 +00002298 QualType Type = VD->getType();
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00002299 std::string TypeString(Type.getAsString(Context->PrintingPolicy));
Fariborz Jahaniane8c28df2010-02-16 16:21:26 +00002300 const char *argPtr = TypeString.c_str();
2301 int paren = 0;
2302 while (*argPtr) {
2303 switch (*argPtr) {
2304 case '(':
2305 Str += *argPtr;
2306 paren++;
2307 break;
2308 case ')':
2309 Str += *argPtr;
2310 paren--;
2311 break;
2312 case '^':
2313 Str += '*';
2314 if (paren == 1)
2315 Str += VD->getNameAsString();
2316 break;
2317 default:
2318 Str += *argPtr;
2319 break;
2320 }
2321 argPtr++;
2322 }
2323}
2324
2325
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002326void RewriteObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
2327 SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
2328 const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
2329 const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
2330 if (!proto)
2331 return;
2332 QualType Type = proto->getResultType();
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00002333 std::string FdStr = Type.getAsString(Context->PrintingPolicy);
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002334 FdStr += " ";
Daniel Dunbar4087f272010-08-17 22:39:59 +00002335 FdStr += FD->getName();
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002336 FdStr += "(";
2337 unsigned numArgs = proto->getNumArgs();
2338 for (unsigned i = 0; i < numArgs; i++) {
2339 QualType ArgType = proto->getArgType(i);
Fariborz Jahanian52b2e1e2010-02-12 17:52:31 +00002340 RewriteBlockPointerType(FdStr, ArgType);
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002341 if (i+1 < numArgs)
2342 FdStr += ", ";
2343 }
2344 FdStr += ");\n";
Benjamin Kramerd999b372010-02-14 14:14:16 +00002345 InsertText(FunLocStart, FdStr);
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002346 CurFunctionDeclToDeclareForBlock = 0;
2347}
2348
Steve Naroffc0a123c2008-03-11 17:37:02 +00002349// SynthSuperContructorFunctionDecl - id objc_super(id obj, id super);
Steve Naroffb29b4272008-04-14 22:03:09 +00002350void RewriteObjC::SynthSuperContructorFunctionDecl() {
Steve Naroffc0a123c2008-03-11 17:37:02 +00002351 if (SuperContructorFunctionDecl)
2352 return;
Steve Naroff46a98a72008-12-23 20:11:22 +00002353 IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
Steve Naroffc0a123c2008-03-11 17:37:02 +00002354 llvm::SmallVector<QualType, 16> ArgTys;
2355 QualType argT = Context->getObjCIdType();
2356 assert(!argT.isNull() && "Can't find 'id' type");
2357 ArgTys.push_back(argT);
2358 ArgTys.push_back(argT);
2359 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
2360 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002361 false, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002362 false, false, 0, 0,
2363 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002364 SuperContructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002365 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002366 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002367 SC_Extern,
2368 SC_None, false);
Steve Naroffc0a123c2008-03-11 17:37:02 +00002369}
2370
Steve Naroff09b266e2007-10-30 23:14:51 +00002371// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002372void RewriteObjC::SynthMsgSendFunctionDecl() {
Steve Naroff09b266e2007-10-30 23:14:51 +00002373 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
2374 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002375 QualType argT = Context->getObjCIdType();
Steve Naroff09b266e2007-10-30 23:14:51 +00002376 assert(!argT.isNull() && "Can't find 'id' type");
2377 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002378 argT = Context->getObjCSelType();
Steve Naroff09b266e2007-10-30 23:14:51 +00002379 assert(!argT.isNull() && "Can't find 'SEL' type");
2380 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002381 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff09b266e2007-10-30 23:14:51 +00002382 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002383 true /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002384 false, false, 0, 0,
2385 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002386 MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002387 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002388 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002389 SC_Extern,
2390 SC_None, false);
Steve Naroff09b266e2007-10-30 23:14:51 +00002391}
2392
Steve Naroff874e2322007-11-15 10:28:18 +00002393// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(struct objc_super *, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002394void RewriteObjC::SynthMsgSendSuperFunctionDecl() {
Steve Naroff874e2322007-11-15 10:28:18 +00002395 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
2396 llvm::SmallVector<QualType, 16> ArgTys;
Abramo Bagnara465d41b2010-05-11 21:36:43 +00002397 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002398 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002399 &Context->Idents.get("objc_super"));
Steve Naroff874e2322007-11-15 10:28:18 +00002400 QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
2401 assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
2402 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002403 argT = Context->getObjCSelType();
Steve Naroff874e2322007-11-15 10:28:18 +00002404 assert(!argT.isNull() && "Can't find 'SEL' type");
2405 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002406 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff874e2322007-11-15 10:28:18 +00002407 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002408 true /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002409 false, false, 0, 0,
2410 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002411 MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002412 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002413 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002414 SC_Extern,
2415 SC_None, false);
Steve Naroff874e2322007-11-15 10:28:18 +00002416}
2417
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002418// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002419void RewriteObjC::SynthMsgSendStretFunctionDecl() {
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002420 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
2421 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002422 QualType argT = Context->getObjCIdType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002423 assert(!argT.isNull() && "Can't find 'id' type");
2424 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002425 argT = Context->getObjCSelType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002426 assert(!argT.isNull() && "Can't find 'SEL' type");
2427 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002428 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002429 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002430 true /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002431 false, false, 0, 0,
2432 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002433 MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002434 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002435 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002436 SC_Extern,
2437 SC_None, false);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002438}
2439
Mike Stump1eb44332009-09-09 15:08:12 +00002440// SynthMsgSendSuperStretFunctionDecl -
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002441// id objc_msgSendSuper_stret(struct objc_super *, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002442void RewriteObjC::SynthMsgSendSuperStretFunctionDecl() {
Mike Stump1eb44332009-09-09 15:08:12 +00002443 IdentifierInfo *msgSendIdent =
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002444 &Context->Idents.get("objc_msgSendSuper_stret");
2445 llvm::SmallVector<QualType, 16> ArgTys;
Abramo Bagnara465d41b2010-05-11 21:36:43 +00002446 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002447 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002448 &Context->Idents.get("objc_super"));
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002449 QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
2450 assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
2451 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002452 argT = Context->getObjCSelType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002453 assert(!argT.isNull() && "Can't find 'SEL' type");
2454 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002455 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002456 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002457 true /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002458 false, false, 0, 0,
2459 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002460 MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002461 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002462 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002463 SC_Extern,
2464 SC_None, false);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002465}
2466
Steve Naroff1284db82008-05-08 22:02:18 +00002467// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002468void RewriteObjC::SynthMsgSendFpretFunctionDecl() {
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002469 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
2470 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002471 QualType argT = Context->getObjCIdType();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002472 assert(!argT.isNull() && "Can't find 'id' type");
2473 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002474 argT = Context->getObjCSelType();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002475 assert(!argT.isNull() && "Can't find 'SEL' type");
2476 ArgTys.push_back(argT);
Steve Naroff1284db82008-05-08 22:02:18 +00002477 QualType msgSendType = Context->getFunctionType(Context->DoubleTy,
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002478 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002479 true /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002480 false, false, 0, 0,
2481 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002482 MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002483 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002484 msgSendIdent, msgSendType, 0,
John McCalld931b082010-08-26 03:08:43 +00002485 SC_Extern,
2486 SC_None, false);
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002487}
2488
Steve Naroff09b266e2007-10-30 23:14:51 +00002489// SynthGetClassFunctionDecl - id objc_getClass(const char *name);
Steve Naroffb29b4272008-04-14 22:03:09 +00002490void RewriteObjC::SynthGetClassFunctionDecl() {
Steve Naroff09b266e2007-10-30 23:14:51 +00002491 IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
2492 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002493 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002494 QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff09b266e2007-10-30 23:14:51 +00002495 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002496 false /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002497 false, false, 0, 0,
2498 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002499 GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002500 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002501 getClassIdent, getClassType, 0,
John McCalld931b082010-08-26 03:08:43 +00002502 SC_Extern,
2503 SC_None, false);
Steve Naroff09b266e2007-10-30 23:14:51 +00002504}
2505
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +00002506// SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls);
2507void RewriteObjC::SynthGetSuperClassFunctionDecl() {
2508 IdentifierInfo *getSuperClassIdent =
2509 &Context->Idents.get("class_getSuperclass");
2510 llvm::SmallVector<QualType, 16> ArgTys;
2511 ArgTys.push_back(Context->getObjCClassType());
2512 QualType getClassType = Context->getFunctionType(Context->getObjCClassType(),
2513 &ArgTys[0], ArgTys.size(),
2514 false /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002515 false, false, 0, 0,
2516 FunctionType::ExtInfo());
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +00002517 GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Douglas Gregor16573fa2010-04-19 22:54:31 +00002518 SourceLocation(),
2519 getSuperClassIdent,
2520 getClassType, 0,
John McCalld931b082010-08-26 03:08:43 +00002521 SC_Extern,
2522 SC_None,
Douglas Gregor16573fa2010-04-19 22:54:31 +00002523 false);
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +00002524}
2525
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002526// SynthGetMetaClassFunctionDecl - id objc_getClass(const char *name);
Steve Naroffb29b4272008-04-14 22:03:09 +00002527void RewriteObjC::SynthGetMetaClassFunctionDecl() {
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002528 IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
2529 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002530 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002531 QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002532 &ArgTys[0], ArgTys.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00002533 false /*isVariadic*/, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002534 false, false, 0, 0,
2535 FunctionType::ExtInfo());
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002536 GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002537 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002538 getClassIdent, getClassType, 0,
John McCalld931b082010-08-26 03:08:43 +00002539 SC_Extern,
2540 SC_None, false);
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002541}
2542
Steve Naroffb29b4272008-04-14 22:03:09 +00002543Stmt *RewriteObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002544 QualType strType = getConstantStringStructType();
2545
2546 std::string S = "__NSConstantStringImpl_";
Steve Naroff7691d9b2008-05-31 03:35:42 +00002547
2548 std::string tmpName = InFileName;
2549 unsigned i;
2550 for (i=0; i < tmpName.length(); i++) {
2551 char c = tmpName.at(i);
2552 // replace any non alphanumeric characters with '_'.
2553 if (!isalpha(c) && (c < '0' || c > '9'))
2554 tmpName[i] = '_';
2555 }
2556 S += tmpName;
2557 S += "_";
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002558 S += utostr(NumObjCStringLiterals++);
2559
Steve Naroffba92b2e2008-03-27 22:29:16 +00002560 Preamble += "static __NSConstantStringImpl " + S;
2561 Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
2562 Preamble += "0x000007c8,"; // utf8_str
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002563 // The pretty printer for StringLiteral handles escape characters properly.
Ted Kremeneka95d3752008-09-13 05:16:45 +00002564 std::string prettyBufS;
2565 llvm::raw_string_ostream prettyBuf(prettyBufS);
Chris Lattnere4f21422009-06-30 01:26:17 +00002566 Exp->getString()->printPretty(prettyBuf, *Context, 0,
2567 PrintingPolicy(LangOpts));
Steve Naroffba92b2e2008-03-27 22:29:16 +00002568 Preamble += prettyBuf.str();
2569 Preamble += ",";
Steve Narofffd5b76f2009-12-06 01:48:44 +00002570 Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00002571
2572 VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
Benjamin Kramerd999b372010-02-14 14:14:16 +00002573 &Context->Idents.get(S), strType, 0,
John McCalld931b082010-08-26 03:08:43 +00002574 SC_Static, SC_None);
Ted Kremenek8189cde2009-02-07 01:47:29 +00002575 DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, strType, SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00002576 Expr *Unop = new (Context) UnaryOperator(DRE, UO_AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00002577 Context->getPointerType(DRE->getType()),
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002578 SourceLocation());
Steve Naroff96984642007-11-08 14:30:50 +00002579 // cast to NSConstantString *
John McCall9d125032010-01-15 18:39:57 +00002580 CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
John McCall2de56d12010-08-25 11:45:40 +00002581 CK_Unknown, Unop);
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00002582 ReplaceStmt(Exp, cast);
Steve Naroff4c3580e2008-12-04 23:50:32 +00002583 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroff96984642007-11-08 14:30:50 +00002584 return cast;
Steve Naroffbeaf2992007-11-03 11:27:19 +00002585}
2586
Steve Naroff874e2322007-11-15 10:28:18 +00002587// struct objc_super { struct objc_object *receiver; struct objc_class *super; };
Steve Naroffb29b4272008-04-14 22:03:09 +00002588QualType RewriteObjC::getSuperStructType() {
Steve Naroff874e2322007-11-15 10:28:18 +00002589 if (!SuperStructDecl) {
Abramo Bagnara465d41b2010-05-11 21:36:43 +00002590 SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002591 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002592 &Context->Idents.get("objc_super"));
Steve Naroff874e2322007-11-15 10:28:18 +00002593 QualType FieldTypes[2];
Mike Stump1eb44332009-09-09 15:08:12 +00002594
Steve Naroff874e2322007-11-15 10:28:18 +00002595 // struct objc_object *receiver;
Mike Stump1eb44332009-09-09 15:08:12 +00002596 FieldTypes[0] = Context->getObjCIdType();
Steve Naroff874e2322007-11-15 10:28:18 +00002597 // struct objc_class *super;
Mike Stump1eb44332009-09-09 15:08:12 +00002598 FieldTypes[1] = Context->getObjCClassType();
Douglas Gregor44b43212008-12-11 16:49:14 +00002599
Steve Naroff874e2322007-11-15 10:28:18 +00002600 // Create fields
Douglas Gregor44b43212008-12-11 16:49:14 +00002601 for (unsigned i = 0; i < 2; ++i) {
Mike Stump1eb44332009-09-09 15:08:12 +00002602 SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
2603 SourceLocation(), 0,
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002604 FieldTypes[i], 0,
2605 /*BitWidth=*/0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002606 /*Mutable=*/false));
Douglas Gregor44b43212008-12-11 16:49:14 +00002607 }
Mike Stump1eb44332009-09-09 15:08:12 +00002608
Douglas Gregor838db382010-02-11 01:19:42 +00002609 SuperStructDecl->completeDefinition();
Steve Naroff874e2322007-11-15 10:28:18 +00002610 }
2611 return Context->getTagDeclType(SuperStructDecl);
2612}
2613
Steve Naroffb29b4272008-04-14 22:03:09 +00002614QualType RewriteObjC::getConstantStringStructType() {
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002615 if (!ConstantStringDecl) {
Abramo Bagnara465d41b2010-05-11 21:36:43 +00002616 ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002617 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002618 &Context->Idents.get("__NSConstantStringImpl"));
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002619 QualType FieldTypes[4];
Mike Stump1eb44332009-09-09 15:08:12 +00002620
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002621 // struct objc_object *receiver;
Mike Stump1eb44332009-09-09 15:08:12 +00002622 FieldTypes[0] = Context->getObjCIdType();
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002623 // int flags;
Mike Stump1eb44332009-09-09 15:08:12 +00002624 FieldTypes[1] = Context->IntTy;
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002625 // char *str;
Mike Stump1eb44332009-09-09 15:08:12 +00002626 FieldTypes[2] = Context->getPointerType(Context->CharTy);
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002627 // long length;
Mike Stump1eb44332009-09-09 15:08:12 +00002628 FieldTypes[3] = Context->LongTy;
Douglas Gregor44b43212008-12-11 16:49:14 +00002629
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002630 // Create fields
Douglas Gregor44b43212008-12-11 16:49:14 +00002631 for (unsigned i = 0; i < 4; ++i) {
Mike Stump1eb44332009-09-09 15:08:12 +00002632 ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
2633 ConstantStringDecl,
Douglas Gregor44b43212008-12-11 16:49:14 +00002634 SourceLocation(), 0,
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002635 FieldTypes[i], 0,
Douglas Gregor44b43212008-12-11 16:49:14 +00002636 /*BitWidth=*/0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002637 /*Mutable=*/true));
Douglas Gregor44b43212008-12-11 16:49:14 +00002638 }
2639
Douglas Gregor838db382010-02-11 01:19:42 +00002640 ConstantStringDecl->completeDefinition();
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002641 }
2642 return Context->getTagDeclType(ConstantStringDecl);
2643}
2644
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002645Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
2646 SourceLocation StartLoc,
2647 SourceLocation EndLoc) {
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002648 if (!SelGetUidFunctionDecl)
2649 SynthSelGetUidFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +00002650 if (!MsgSendFunctionDecl)
2651 SynthMsgSendFunctionDecl();
Steve Naroff874e2322007-11-15 10:28:18 +00002652 if (!MsgSendSuperFunctionDecl)
2653 SynthMsgSendSuperFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002654 if (!MsgSendStretFunctionDecl)
2655 SynthMsgSendStretFunctionDecl();
2656 if (!MsgSendSuperStretFunctionDecl)
2657 SynthMsgSendSuperStretFunctionDecl();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002658 if (!MsgSendFpretFunctionDecl)
2659 SynthMsgSendFpretFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +00002660 if (!GetClassFunctionDecl)
2661 SynthGetClassFunctionDecl();
Fariborz Jahaniand314e9e2010-03-10 21:17:41 +00002662 if (!GetSuperClassFunctionDecl)
2663 SynthGetSuperClassFunctionDecl();
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002664 if (!GetMetaClassFunctionDecl)
2665 SynthGetMetaClassFunctionDecl();
Mike Stump1eb44332009-09-09 15:08:12 +00002666
Steve Naroff874e2322007-11-15 10:28:18 +00002667 // default to objc_msgSend().
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002668 FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
2669 // May need to use objc_msgSend_stret() as well.
2670 FunctionDecl *MsgSendStretFlavor = 0;
Steve Naroff621edce2009-04-29 16:37:50 +00002671 if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
2672 QualType resultType = mDecl->getResultType();
Douglas Gregorfb87b892010-04-26 21:31:17 +00002673 if (resultType->isRecordType())
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002674 MsgSendStretFlavor = MsgSendStretFunctionDecl;
Chris Lattner8b51fd72008-07-26 22:36:27 +00002675 else if (resultType->isRealFloatingType())
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002676 MsgSendFlavor = MsgSendFpretFunctionDecl;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002677 }
Mike Stump1eb44332009-09-09 15:08:12 +00002678
Steve Naroff934f2762007-10-24 22:48:43 +00002679 // Synthesize a call to objc_msgSend().
2680 llvm::SmallVector<Expr*, 8> MsgExprs;
Douglas Gregor04badcf2010-04-21 00:45:42 +00002681 switch (Exp->getReceiverKind()) {
2682 case ObjCMessageExpr::SuperClass: {
2683 MsgSendFlavor = MsgSendSuperFunctionDecl;
2684 if (MsgSendStretFlavor)
2685 MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
2686 assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
Mike Stump1eb44332009-09-09 15:08:12 +00002687
Douglas Gregor04badcf2010-04-21 00:45:42 +00002688 ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
Mike Stump1eb44332009-09-09 15:08:12 +00002689
Douglas Gregor04badcf2010-04-21 00:45:42 +00002690 llvm::SmallVector<Expr*, 4> InitExprs;
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002691
Douglas Gregor04badcf2010-04-21 00:45:42 +00002692 // set the receiver to self, the first argument to all methods.
2693 InitExprs.push_back(
2694 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002695 CK_Unknown,
Douglas Gregor04badcf2010-04-21 00:45:42 +00002696 new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
2697 Context->getObjCIdType(),
2698 SourceLocation()))
2699 ); // set the 'receiver'.
Mike Stump1eb44332009-09-09 15:08:12 +00002700
Douglas Gregor04badcf2010-04-21 00:45:42 +00002701 // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
2702 llvm::SmallVector<Expr*, 8> ClsExprs;
2703 QualType argType = Context->getPointerType(Context->CharTy);
2704 ClsExprs.push_back(StringLiteral::Create(*Context,
2705 ClassDecl->getIdentifier()->getNameStart(),
2706 ClassDecl->getIdentifier()->getLength(),
2707 false, argType, SourceLocation()));
2708 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
2709 &ClsExprs[0],
2710 ClsExprs.size(),
2711 StartLoc,
2712 EndLoc);
2713 // (Class)objc_getClass("CurrentClass")
2714 CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
2715 Context->getObjCClassType(),
John McCall2de56d12010-08-25 11:45:40 +00002716 CK_Unknown, Cls);
Douglas Gregor04badcf2010-04-21 00:45:42 +00002717 ClsExprs.clear();
2718 ClsExprs.push_back(ArgExpr);
2719 Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
2720 &ClsExprs[0], ClsExprs.size(),
2721 StartLoc, EndLoc);
2722
2723 // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
2724 // To turn off a warning, type-cast to 'id'
2725 InitExprs.push_back( // set 'super class', using class_getSuperclass().
2726 NoTypeInfoCStyleCastExpr(Context,
2727 Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002728 CK_Unknown, Cls));
Douglas Gregor04badcf2010-04-21 00:45:42 +00002729 // struct objc_super
2730 QualType superType = getSuperStructType();
2731 Expr *SuperRep;
Steve Naroff621edce2009-04-29 16:37:50 +00002732
Douglas Gregor04badcf2010-04-21 00:45:42 +00002733 if (LangOpts.Microsoft) {
2734 SynthSuperContructorFunctionDecl();
2735 // Simulate a contructor call...
2736 DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
2737 superType, SourceLocation());
2738 SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
2739 InitExprs.size(),
2740 superType, SourceLocation());
2741 // The code for super is a little tricky to prevent collision with
2742 // the structure definition in the header. The rewriter has it's own
2743 // internal definition (__rw_objc_super) that is uses. This is why
2744 // we need the cast below. For example:
2745 // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
2746 //
John McCall2de56d12010-08-25 11:45:40 +00002747 SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
Douglas Gregor04badcf2010-04-21 00:45:42 +00002748 Context->getPointerType(SuperRep->getType()),
2749 SourceLocation());
2750 SuperRep = NoTypeInfoCStyleCastExpr(Context,
2751 Context->getPointerType(superType),
John McCall2de56d12010-08-25 11:45:40 +00002752 CK_Unknown, SuperRep);
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002753 } else {
Douglas Gregor04badcf2010-04-21 00:45:42 +00002754 // (struct objc_super) { <exprs from above> }
2755 InitListExpr *ILE =
2756 new (Context) InitListExpr(*Context, SourceLocation(),
2757 &InitExprs[0], InitExprs.size(),
2758 SourceLocation());
2759 TypeSourceInfo *superTInfo
2760 = Context->getTrivialTypeSourceInfo(superType);
2761 SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
2762 superType, ILE, false);
2763 // struct objc_super *
John McCall2de56d12010-08-25 11:45:40 +00002764 SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
Douglas Gregor04badcf2010-04-21 00:45:42 +00002765 Context->getPointerType(SuperRep->getType()),
2766 SourceLocation());
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002767 }
Douglas Gregor04badcf2010-04-21 00:45:42 +00002768 MsgExprs.push_back(SuperRep);
2769 break;
Steve Naroff6568d4d2007-11-14 23:54:14 +00002770 }
Douglas Gregor04badcf2010-04-21 00:45:42 +00002771
2772 case ObjCMessageExpr::Class: {
2773 llvm::SmallVector<Expr*, 8> ClsExprs;
2774 QualType argType = Context->getPointerType(Context->CharTy);
2775 ObjCInterfaceDecl *Class
John McCall506b57e2010-05-17 21:00:27 +00002776 = Exp->getClassReceiver()->getAs<ObjCObjectType>()->getInterface();
Douglas Gregor04badcf2010-04-21 00:45:42 +00002777 IdentifierInfo *clsName = Class->getIdentifier();
2778 ClsExprs.push_back(StringLiteral::Create(*Context,
2779 clsName->getNameStart(),
2780 clsName->getLength(),
2781 false, argType,
2782 SourceLocation()));
2783 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
2784 &ClsExprs[0],
2785 ClsExprs.size(),
2786 StartLoc, EndLoc);
2787 MsgExprs.push_back(Cls);
2788 break;
2789 }
2790
2791 case ObjCMessageExpr::SuperInstance:{
2792 MsgSendFlavor = MsgSendSuperFunctionDecl;
2793 if (MsgSendStretFlavor)
2794 MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
2795 assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
2796 ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
2797 llvm::SmallVector<Expr*, 4> InitExprs;
2798
2799 InitExprs.push_back(
2800 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002801 CK_Unknown,
Douglas Gregor04badcf2010-04-21 00:45:42 +00002802 new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
2803 Context->getObjCIdType(),
2804 SourceLocation()))
2805 ); // set the 'receiver'.
2806
2807 // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
2808 llvm::SmallVector<Expr*, 8> ClsExprs;
2809 QualType argType = Context->getPointerType(Context->CharTy);
2810 ClsExprs.push_back(StringLiteral::Create(*Context,
2811 ClassDecl->getIdentifier()->getNameStart(),
2812 ClassDecl->getIdentifier()->getLength(),
2813 false, argType, SourceLocation()));
2814 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
2815 &ClsExprs[0],
2816 ClsExprs.size(),
2817 StartLoc, EndLoc);
2818 // (Class)objc_getClass("CurrentClass")
2819 CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
2820 Context->getObjCClassType(),
John McCall2de56d12010-08-25 11:45:40 +00002821 CK_Unknown, Cls);
Douglas Gregor04badcf2010-04-21 00:45:42 +00002822 ClsExprs.clear();
2823 ClsExprs.push_back(ArgExpr);
2824 Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
2825 &ClsExprs[0], ClsExprs.size(),
2826 StartLoc, EndLoc);
2827
2828 // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
2829 // To turn off a warning, type-cast to 'id'
2830 InitExprs.push_back(
2831 // set 'super class', using class_getSuperclass().
2832 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002833 CK_Unknown, Cls));
Douglas Gregor04badcf2010-04-21 00:45:42 +00002834 // struct objc_super
2835 QualType superType = getSuperStructType();
2836 Expr *SuperRep;
2837
2838 if (LangOpts.Microsoft) {
2839 SynthSuperContructorFunctionDecl();
2840 // Simulate a contructor call...
2841 DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
2842 superType, SourceLocation());
2843 SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
2844 InitExprs.size(),
2845 superType, SourceLocation());
2846 // The code for super is a little tricky to prevent collision with
2847 // the structure definition in the header. The rewriter has it's own
2848 // internal definition (__rw_objc_super) that is uses. This is why
2849 // we need the cast below. For example:
2850 // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
2851 //
John McCall2de56d12010-08-25 11:45:40 +00002852 SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
Douglas Gregor04badcf2010-04-21 00:45:42 +00002853 Context->getPointerType(SuperRep->getType()),
2854 SourceLocation());
2855 SuperRep = NoTypeInfoCStyleCastExpr(Context,
2856 Context->getPointerType(superType),
John McCall2de56d12010-08-25 11:45:40 +00002857 CK_Unknown, SuperRep);
Douglas Gregor04badcf2010-04-21 00:45:42 +00002858 } else {
2859 // (struct objc_super) { <exprs from above> }
2860 InitListExpr *ILE =
2861 new (Context) InitListExpr(*Context, SourceLocation(),
2862 &InitExprs[0], InitExprs.size(),
2863 SourceLocation());
2864 TypeSourceInfo *superTInfo
2865 = Context->getTrivialTypeSourceInfo(superType);
2866 SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
2867 superType, ILE, false);
2868 }
2869 MsgExprs.push_back(SuperRep);
2870 break;
2871 }
2872
2873 case ObjCMessageExpr::Instance: {
2874 // Remove all type-casts because it may contain objc-style types; e.g.
2875 // Foo<Proto> *.
2876 Expr *recExpr = Exp->getInstanceReceiver();
2877 while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
2878 recExpr = CE->getSubExpr();
2879 recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002880 CK_Unknown, recExpr);
Douglas Gregor04badcf2010-04-21 00:45:42 +00002881 MsgExprs.push_back(recExpr);
2882 break;
2883 }
2884 }
2885
Steve Naroffbeaf2992007-11-03 11:27:19 +00002886 // Create a call to sel_registerName("selName"), it will be the 2nd argument.
Steve Naroff934f2762007-10-24 22:48:43 +00002887 llvm::SmallVector<Expr*, 8> SelExprs;
2888 QualType argType = Context->getPointerType(Context->CharTy);
Mike Stump1eb44332009-09-09 15:08:12 +00002889 SelExprs.push_back(StringLiteral::Create(*Context,
Ted Kremenek6e94ef52009-02-06 19:55:15 +00002890 Exp->getSelector().getAsString().c_str(),
Chris Lattner077bf5e2008-11-24 03:33:13 +00002891 Exp->getSelector().getAsString().size(),
Chris Lattner726e1682009-02-18 05:49:11 +00002892 false, argType, SourceLocation()));
Steve Naroff934f2762007-10-24 22:48:43 +00002893 CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002894 &SelExprs[0], SelExprs.size(),
2895 StartLoc,
2896 EndLoc);
Steve Naroff934f2762007-10-24 22:48:43 +00002897 MsgExprs.push_back(SelExp);
Mike Stump1eb44332009-09-09 15:08:12 +00002898
Steve Naroff934f2762007-10-24 22:48:43 +00002899 // Now push any user supplied arguments.
2900 for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
Steve Naroff6568d4d2007-11-14 23:54:14 +00002901 Expr *userExpr = Exp->getArg(i);
Steve Naroff7e3411b2007-11-15 02:58:25 +00002902 // Make all implicit casts explicit...ICE comes in handy:-)
2903 if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
2904 // Reuse the ICE type, it is exactly what the doctor ordered.
Douglas Gregor49badde2008-10-27 19:41:14 +00002905 QualType type = ICE->getType()->isObjCQualifiedIdType()
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002906 ? Context->getObjCIdType()
Douglas Gregor49badde2008-10-27 19:41:14 +00002907 : ICE->getType();
Fariborz Jahanian1f906222010-05-25 15:56:08 +00002908 // Make sure we convert "type (^)(...)" to "type (*)(...)".
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00002909 (void)convertBlockPointerToFunctionPointer(type);
John McCall2de56d12010-08-25 11:45:40 +00002910 userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00002911 userExpr);
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002912 }
2913 // Make id<P...> cast into an 'id' cast.
Douglas Gregor6eec8e82008-10-28 15:36:24 +00002914 else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002915 if (CE->getType()->isObjCQualifiedIdType()) {
Douglas Gregor6eec8e82008-10-28 15:36:24 +00002916 while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002917 userExpr = CE->getSubExpr();
John McCall9d125032010-01-15 18:39:57 +00002918 userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
John McCall2de56d12010-08-25 11:45:40 +00002919 CK_Unknown, userExpr);
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002920 }
Mike Stump1eb44332009-09-09 15:08:12 +00002921 }
Steve Naroff6568d4d2007-11-14 23:54:14 +00002922 MsgExprs.push_back(userExpr);
Steve Naroff621edce2009-04-29 16:37:50 +00002923 // We've transferred the ownership to MsgExprs. For now, we *don't* null
2924 // out the argument in the original expression (since we aren't deleting
2925 // the ObjCMessageExpr). See RewritePropertySetter() usage for more info.
2926 //Exp->setArg(i, 0);
Steve Naroff934f2762007-10-24 22:48:43 +00002927 }
Steve Naroffab972d32007-11-04 22:37:50 +00002928 // Generate the funky cast.
2929 CastExpr *cast;
2930 llvm::SmallVector<QualType, 8> ArgTypes;
2931 QualType returnType;
Mike Stump1eb44332009-09-09 15:08:12 +00002932
Steve Naroffab972d32007-11-04 22:37:50 +00002933 // Push 'id' and 'SEL', the 2 implicit arguments.
Steve Naroffc3a438c2007-11-15 10:43:57 +00002934 if (MsgSendFlavor == MsgSendSuperFunctionDecl)
2935 ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
2936 else
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002937 ArgTypes.push_back(Context->getObjCIdType());
2938 ArgTypes.push_back(Context->getObjCSelType());
Chris Lattner89951a82009-02-20 18:43:26 +00002939 if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
Steve Naroffab972d32007-11-04 22:37:50 +00002940 // Push any user argument types.
Chris Lattner89951a82009-02-20 18:43:26 +00002941 for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
2942 E = OMD->param_end(); PI != E; ++PI) {
2943 QualType t = (*PI)->getType()->isObjCQualifiedIdType()
Mike Stump1eb44332009-09-09 15:08:12 +00002944 ? Context->getObjCIdType()
Chris Lattner89951a82009-02-20 18:43:26 +00002945 : (*PI)->getType();
Steve Naroffa206b062008-10-29 14:49:46 +00002946 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00002947 (void)convertBlockPointerToFunctionPointer(t);
Steve Naroff352336b2007-11-05 14:36:37 +00002948 ArgTypes.push_back(t);
2949 }
Chris Lattner89951a82009-02-20 18:43:26 +00002950 returnType = OMD->getResultType()->isObjCQualifiedIdType()
2951 ? Context->getObjCIdType() : OMD->getResultType();
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00002952 (void)convertBlockPointerToFunctionPointer(returnType);
Steve Naroffab972d32007-11-04 22:37:50 +00002953 } else {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002954 returnType = Context->getObjCIdType();
Steve Naroffab972d32007-11-04 22:37:50 +00002955 }
2956 // Get the type, we will need to reference it in a couple spots.
Steve Naroff874e2322007-11-15 10:28:18 +00002957 QualType msgSendType = MsgSendFlavor->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00002958
Steve Naroffab972d32007-11-04 22:37:50 +00002959 // Create a reference to the objc_msgSend() declaration.
Mike Stump1eb44332009-09-09 15:08:12 +00002960 DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, msgSendType,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002961 SourceLocation());
Steve Naroffab972d32007-11-04 22:37:50 +00002962
Mike Stump1eb44332009-09-09 15:08:12 +00002963 // Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
Steve Naroffab972d32007-11-04 22:37:50 +00002964 // If we don't do this cast, we get the following bizarre warning/note:
2965 // xx.m:13: warning: function called through a non-compatible type
2966 // xx.m:13: note: if this code is reached, the program will abort
John McCall9d125032010-01-15 18:39:57 +00002967 cast = NoTypeInfoCStyleCastExpr(Context,
2968 Context->getPointerType(Context->VoidTy),
John McCall2de56d12010-08-25 11:45:40 +00002969 CK_Unknown, DRE);
Mike Stump1eb44332009-09-09 15:08:12 +00002970
Steve Naroffab972d32007-11-04 22:37:50 +00002971 // Now do the "normal" pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00002972 QualType castType = Context->getFunctionType(returnType,
Fariborz Jahaniand0ee6f92007-12-06 19:49:56 +00002973 &ArgTypes[0], ArgTypes.size(),
Steve Naroff2679e482008-03-18 02:02:04 +00002974 // If we don't have a method decl, force a variadic cast.
Douglas Gregorce056bc2010-02-21 22:15:06 +00002975 Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : true, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00002976 false, false, 0, 0,
2977 FunctionType::ExtInfo());
Steve Naroffab972d32007-11-04 22:37:50 +00002978 castType = Context->getPointerType(castType);
John McCall2de56d12010-08-25 11:45:40 +00002979 cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00002980 cast);
Steve Naroffab972d32007-11-04 22:37:50 +00002981
2982 // Don't forget the parens to enforce the proper binding.
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002983 ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
Mike Stump1eb44332009-09-09 15:08:12 +00002984
John McCall183700f2009-09-21 23:43:11 +00002985 const FunctionType *FT = msgSendType->getAs<FunctionType>();
Ted Kremenek668bf912009-02-09 20:51:47 +00002986 CallExpr *CE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00002987 MsgExprs.size(),
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00002988 FT->getResultType(), EndLoc);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00002989 Stmt *ReplacingStmt = CE;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002990 if (MsgSendStretFlavor) {
2991 // We have the method which returns a struct/union. Must also generate
2992 // call to objc_msgSend_stret and hang both varieties on a conditional
2993 // expression which dictate which one to envoke depending on size of
2994 // method's return type.
Mike Stump1eb44332009-09-09 15:08:12 +00002995
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002996 // Create a reference to the objc_msgSend_stret() declaration.
Mike Stump1eb44332009-09-09 15:08:12 +00002997 DeclRefExpr *STDRE = new (Context) DeclRefExpr(MsgSendStretFlavor, msgSendType,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002998 SourceLocation());
2999 // Need to cast objc_msgSend_stret to "void *" (see above comment).
John McCall9d125032010-01-15 18:39:57 +00003000 cast = NoTypeInfoCStyleCastExpr(Context,
3001 Context->getPointerType(Context->VoidTy),
John McCall2de56d12010-08-25 11:45:40 +00003002 CK_Unknown, STDRE);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003003 // Now do the "normal" pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00003004 castType = Context->getFunctionType(returnType,
Fariborz Jahaniand0ee6f92007-12-06 19:49:56 +00003005 &ArgTypes[0], ArgTypes.size(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00003006 Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : false, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00003007 false, false, 0, 0,
3008 FunctionType::ExtInfo());
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003009 castType = Context->getPointerType(castType);
John McCall2de56d12010-08-25 11:45:40 +00003010 cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00003011 cast);
Mike Stump1eb44332009-09-09 15:08:12 +00003012
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003013 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00003014 PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
Mike Stump1eb44332009-09-09 15:08:12 +00003015
John McCall183700f2009-09-21 23:43:11 +00003016 FT = msgSendType->getAs<FunctionType>();
Ted Kremenek668bf912009-02-09 20:51:47 +00003017 CallExpr *STCE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00003018 MsgExprs.size(),
Ted Kremenek668bf912009-02-09 20:51:47 +00003019 FT->getResultType(), SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00003020
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003021 // Build sizeof(returnType)
Mike Stump1eb44332009-09-09 15:08:12 +00003022 SizeOfAlignOfExpr *sizeofExpr = new (Context) SizeOfAlignOfExpr(true,
John McCalla93c9342009-12-07 02:54:59 +00003023 Context->getTrivialTypeSourceInfo(returnType),
Sebastian Redl05189992008-11-11 17:56:53 +00003024 Context->getSizeType(),
3025 SourceLocation(), SourceLocation());
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003026 // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
3027 // FIXME: Value of 8 is base on ppc32/x86 ABI for the most common cases.
3028 // For X86 it is more complicated and some kind of target specific routine
3029 // is needed to decide what to do.
Mike Stump1eb44332009-09-09 15:08:12 +00003030 unsigned IntSize =
Chris Lattner98be4942008-03-05 18:54:05 +00003031 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
Mike Stump1eb44332009-09-09 15:08:12 +00003032 IntegerLiteral *limit = new (Context) IntegerLiteral(llvm::APInt(IntSize, 8),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003033 Context->IntTy,
3034 SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00003035 BinaryOperator *lessThanExpr = new (Context) BinaryOperator(sizeofExpr, limit,
John McCall2de56d12010-08-25 11:45:40 +00003036 BO_LE,
Mike Stump1eb44332009-09-09 15:08:12 +00003037 Context->IntTy,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003038 SourceLocation());
3039 // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
Mike Stump1eb44332009-09-09 15:08:12 +00003040 ConditionalOperator *CondExpr =
Douglas Gregor47e1f7c2009-08-26 14:37:04 +00003041 new (Context) ConditionalOperator(lessThanExpr,
3042 SourceLocation(), CE,
3043 SourceLocation(), STCE, returnType);
Ted Kremenek8189cde2009-02-07 01:47:29 +00003044 ReplacingStmt = new (Context) ParenExpr(SourceLocation(), SourceLocation(), CondExpr);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00003045 }
Mike Stump1eb44332009-09-09 15:08:12 +00003046 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00003047 return ReplacingStmt;
3048}
3049
Steve Naroffb29b4272008-04-14 22:03:09 +00003050Stmt *RewriteObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
Fariborz Jahanian1d35b162010-02-22 20:48:10 +00003051 Stmt *ReplacingStmt = SynthMessageExpr(Exp, Exp->getLocStart(),
3052 Exp->getLocEnd());
Mike Stump1eb44332009-09-09 15:08:12 +00003053
Steve Naroff934f2762007-10-24 22:48:43 +00003054 // Now do the actual rewrite.
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00003055 ReplaceStmt(Exp, ReplacingStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00003056
3057 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00003058 return ReplacingStmt;
Steve Naroffebf2b562007-10-23 23:50:29 +00003059}
3060
Steve Naroff621edce2009-04-29 16:37:50 +00003061// typedef struct objc_object Protocol;
3062QualType RewriteObjC::getProtocolType() {
3063 if (!ProtocolTypeDecl) {
John McCalla93c9342009-12-07 02:54:59 +00003064 TypeSourceInfo *TInfo
3065 = Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
Steve Naroff621edce2009-04-29 16:37:50 +00003066 ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00003067 SourceLocation(),
Steve Naroff621edce2009-04-29 16:37:50 +00003068 &Context->Idents.get("Protocol"),
John McCalla93c9342009-12-07 02:54:59 +00003069 TInfo);
Steve Naroff621edce2009-04-29 16:37:50 +00003070 }
3071 return Context->getTypeDeclType(ProtocolTypeDecl);
3072}
3073
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +00003074/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
Steve Naroff621edce2009-04-29 16:37:50 +00003075/// a synthesized/forward data reference (to the protocol's metadata).
3076/// The forward references (and metadata) are generated in
3077/// RewriteObjC::HandleTranslationUnit().
Steve Naroffb29b4272008-04-14 22:03:09 +00003078Stmt *RewriteObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
Steve Naroff621edce2009-04-29 16:37:50 +00003079 std::string Name = "_OBJC_PROTOCOL_" + Exp->getProtocol()->getNameAsString();
3080 IdentifierInfo *ID = &Context->Idents.get(Name);
Mike Stump1eb44332009-09-09 15:08:12 +00003081 VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
Douglas Gregor16573fa2010-04-19 22:54:31 +00003082 ID, getProtocolType(), 0,
John McCalld931b082010-08-26 03:08:43 +00003083 SC_Extern, SC_None);
Steve Naroff621edce2009-04-29 16:37:50 +00003084 DeclRefExpr *DRE = new (Context) DeclRefExpr(VD, getProtocolType(), SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00003085 Expr *DerefExpr = new (Context) UnaryOperator(DRE, UO_AddrOf,
Steve Naroff621edce2009-04-29 16:37:50 +00003086 Context->getPointerType(DRE->getType()),
3087 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00003088 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, DerefExpr->getType(),
John McCall2de56d12010-08-25 11:45:40 +00003089 CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00003090 DerefExpr);
Steve Naroff621edce2009-04-29 16:37:50 +00003091 ReplaceStmt(Exp, castExpr);
3092 ProtocolExprDecls.insert(Exp->getProtocol());
Mike Stump1eb44332009-09-09 15:08:12 +00003093 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroff621edce2009-04-29 16:37:50 +00003094 return castExpr;
Mike Stump1eb44332009-09-09 15:08:12 +00003095
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +00003096}
3097
Mike Stump1eb44332009-09-09 15:08:12 +00003098bool RewriteObjC::BufferContainsPPDirectives(const char *startBuf,
Steve Naroffbaf58c32008-05-31 14:15:04 +00003099 const char *endBuf) {
3100 while (startBuf < endBuf) {
3101 if (*startBuf == '#') {
3102 // Skip whitespace.
3103 for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf)
3104 ;
3105 if (!strncmp(startBuf, "if", strlen("if")) ||
3106 !strncmp(startBuf, "ifdef", strlen("ifdef")) ||
3107 !strncmp(startBuf, "ifndef", strlen("ifndef")) ||
3108 !strncmp(startBuf, "define", strlen("define")) ||
3109 !strncmp(startBuf, "undef", strlen("undef")) ||
3110 !strncmp(startBuf, "else", strlen("else")) ||
3111 !strncmp(startBuf, "elif", strlen("elif")) ||
3112 !strncmp(startBuf, "endif", strlen("endif")) ||
3113 !strncmp(startBuf, "pragma", strlen("pragma")) ||
3114 !strncmp(startBuf, "include", strlen("include")) ||
3115 !strncmp(startBuf, "import", strlen("import")) ||
3116 !strncmp(startBuf, "include_next", strlen("include_next")))
3117 return true;
3118 }
3119 startBuf++;
3120 }
3121 return false;
3122}
3123
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003124/// SynthesizeObjCInternalStruct - Rewrite one internal struct corresponding to
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003125/// an objective-c class with ivars.
Steve Naroffb29b4272008-04-14 22:03:09 +00003126void RewriteObjC::SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003127 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003128 assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
Daniel Dunbar4087f272010-08-17 22:39:59 +00003129 assert(CDecl->getName() != "" &&
Douglas Gregor2e1cd422008-11-17 14:58:09 +00003130 "Name missing in SynthesizeObjCInternalStruct");
Fariborz Jahanian212b7682007-10-31 23:08:24 +00003131 // Do not synthesize more than once.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003132 if (ObjCSynthesizedStructs.count(CDecl))
Fariborz Jahanian212b7682007-10-31 23:08:24 +00003133 return;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003134 ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
Chris Lattnerf3a7af92008-03-16 21:08:55 +00003135 int NumIvars = CDecl->ivar_size();
Steve Narofffea763e82007-11-14 19:25:57 +00003136 SourceLocation LocStart = CDecl->getLocStart();
3137 SourceLocation LocEnd = CDecl->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00003138
Steve Narofffea763e82007-11-14 19:25:57 +00003139 const char *startBuf = SM->getCharacterData(LocStart);
3140 const char *endBuf = SM->getCharacterData(LocEnd);
Mike Stump1eb44332009-09-09 15:08:12 +00003141
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00003142 // If no ivars and no root or if its root, directly or indirectly,
3143 // have no ivars (thus not synthesized) then no need to synthesize this class.
Chris Lattnerf3a7af92008-03-16 21:08:55 +00003144 if ((CDecl->isForwardDecl() || NumIvars == 0) &&
3145 (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
Chris Lattner2c78b872009-04-14 23:22:57 +00003146 endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
Benjamin Kramerd999b372010-02-14 14:14:16 +00003147 ReplaceText(LocStart, endBuf-startBuf, Result);
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00003148 return;
3149 }
Mike Stump1eb44332009-09-09 15:08:12 +00003150
3151 // FIXME: This has potential of causing problem. If
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003152 // SynthesizeObjCInternalStruct is ever called recursively.
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00003153 Result += "\nstruct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003154 Result += CDecl->getNameAsString();
Steve Naroff61ed9ca2008-03-10 23:16:54 +00003155 if (LangOpts.Microsoft)
3156 Result += "_IMPL";
Steve Naroff05b8c782008-03-12 00:25:36 +00003157
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00003158 if (NumIvars > 0) {
Steve Narofffea763e82007-11-14 19:25:57 +00003159 const char *cursor = strchr(startBuf, '{');
Mike Stump1eb44332009-09-09 15:08:12 +00003160 assert((cursor && endBuf)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003161 && "SynthesizeObjCInternalStruct - malformed @interface");
Steve Naroffbaf58c32008-05-31 14:15:04 +00003162 // If the buffer contains preprocessor directives, we do more fine-grained
3163 // rewrites. This is intended to fix code that looks like (which occurs in
3164 // NSURL.h, for example):
3165 //
3166 // #ifdef XYZ
3167 // @interface Foo : NSObject
3168 // #else
3169 // @interface FooBar : NSObject
3170 // #endif
3171 // {
3172 // int i;
3173 // }
3174 // @end
3175 //
3176 // This clause is segregated to avoid breaking the common case.
3177 if (BufferContainsPPDirectives(startBuf, cursor)) {
Mike Stump1eb44332009-09-09 15:08:12 +00003178 SourceLocation L = RCDecl ? CDecl->getSuperClassLoc() :
Steve Naroffbaf58c32008-05-31 14:15:04 +00003179 CDecl->getClassLoc();
3180 const char *endHeader = SM->getCharacterData(L);
Chris Lattner2c78b872009-04-14 23:22:57 +00003181 endHeader += Lexer::MeasureTokenLength(L, *SM, LangOpts);
Steve Naroffbaf58c32008-05-31 14:15:04 +00003182
Chris Lattnercafeb352009-02-20 18:18:36 +00003183 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroffbaf58c32008-05-31 14:15:04 +00003184 // advance to the end of the referenced protocols.
3185 while (endHeader < cursor && *endHeader != '>') endHeader++;
3186 endHeader++;
3187 }
3188 // rewrite the original header
Benjamin Kramerd999b372010-02-14 14:14:16 +00003189 ReplaceText(LocStart, endHeader-startBuf, Result);
Steve Naroffbaf58c32008-05-31 14:15:04 +00003190 } else {
3191 // rewrite the original header *without* disturbing the '{'
Benjamin Kramerd999b372010-02-14 14:14:16 +00003192 ReplaceText(LocStart, cursor-startBuf, Result);
Steve Naroffbaf58c32008-05-31 14:15:04 +00003193 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003194 if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
Steve Narofffea763e82007-11-14 19:25:57 +00003195 Result = "\n struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003196 Result += RCDecl->getNameAsString();
Steve Naroff39bbd9f2008-03-12 21:09:20 +00003197 Result += "_IMPL ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003198 Result += RCDecl->getNameAsString();
Steve Naroff819173c2008-03-12 21:22:52 +00003199 Result += "_IVARS;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003200
Steve Narofffea763e82007-11-14 19:25:57 +00003201 // insert the super class structure definition.
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00003202 SourceLocation OnePastCurly =
3203 LocStart.getFileLocWithOffset(cursor-startBuf+1);
Benjamin Kramerd999b372010-02-14 14:14:16 +00003204 InsertText(OnePastCurly, Result);
Steve Narofffea763e82007-11-14 19:25:57 +00003205 }
3206 cursor++; // past '{'
Mike Stump1eb44332009-09-09 15:08:12 +00003207
Steve Narofffea763e82007-11-14 19:25:57 +00003208 // Now comment out any visibility specifiers.
3209 while (cursor < endBuf) {
3210 if (*cursor == '@') {
3211 SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Chris Lattnerdf6a51b2007-11-14 22:57:51 +00003212 // Skip whitespace.
3213 for (++cursor; cursor[0] == ' ' || cursor[0] == '\t'; ++cursor)
3214 /*scan*/;
3215
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00003216 // FIXME: presence of @public, etc. inside comment results in
3217 // this transformation as well, which is still correct c-code.
Steve Narofffea763e82007-11-14 19:25:57 +00003218 if (!strncmp(cursor, "public", strlen("public")) ||
3219 !strncmp(cursor, "private", strlen("private")) ||
Steve Naroffc5e32772008-04-04 22:34:24 +00003220 !strncmp(cursor, "package", strlen("package")) ||
Fariborz Jahanian95673922007-11-14 22:26:25 +00003221 !strncmp(cursor, "protected", strlen("protected")))
Benjamin Kramerd999b372010-02-14 14:14:16 +00003222 InsertText(atLoc, "// ");
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00003223 }
Fariborz Jahanian95673922007-11-14 22:26:25 +00003224 // FIXME: If there are cases where '<' is used in ivar declaration part
3225 // of user code, then scan the ivar list and use needToScanForQualifiers
3226 // for type checking.
3227 else if (*cursor == '<') {
3228 SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00003229 InsertText(atLoc, "/* ");
Fariborz Jahanian95673922007-11-14 22:26:25 +00003230 cursor = strchr(cursor, '>');
3231 cursor++;
3232 atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00003233 InsertText(atLoc, " */");
Steve Naroffced80a82008-10-30 12:09:33 +00003234 } else if (*cursor == '^') { // rewrite block specifier.
3235 SourceLocation caretLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00003236 ReplaceText(caretLoc, 1, "*");
Fariborz Jahanian95673922007-11-14 22:26:25 +00003237 }
Steve Narofffea763e82007-11-14 19:25:57 +00003238 cursor++;
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00003239 }
Steve Narofffea763e82007-11-14 19:25:57 +00003240 // Don't forget to add a ';'!!
Benjamin Kramerd999b372010-02-14 14:14:16 +00003241 InsertText(LocEnd.getFileLocWithOffset(1), ";");
Steve Narofffea763e82007-11-14 19:25:57 +00003242 } else { // we don't have any instance variables - insert super struct.
Chris Lattner2c78b872009-04-14 23:22:57 +00003243 endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
Steve Narofffea763e82007-11-14 19:25:57 +00003244 Result += " {\n struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003245 Result += RCDecl->getNameAsString();
Steve Naroff39bbd9f2008-03-12 21:09:20 +00003246 Result += "_IMPL ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003247 Result += RCDecl->getNameAsString();
Steve Naroff819173c2008-03-12 21:22:52 +00003248 Result += "_IVARS;\n};\n";
Benjamin Kramerd999b372010-02-14 14:14:16 +00003249 ReplaceText(LocStart, endBuf-startBuf, Result);
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003250 }
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003251 // Mark this struct as having been generated.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003252 if (!ObjCSynthesizedStructs.insert(CDecl))
Steve Narofffbfe8252008-05-06 18:26:51 +00003253 assert(false && "struct already synthesize- SynthesizeObjCInternalStruct");
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003254}
3255
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003256// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003257/// class methods.
Douglas Gregor653f1b12009-04-23 01:02:12 +00003258template<typename MethodIterator>
3259void RewriteObjC::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
3260 MethodIterator MethodEnd,
Fariborz Jahanian8e991ba2007-10-25 00:14:44 +00003261 bool IsInstanceMethod,
Daniel Dunbar4087f272010-08-17 22:39:59 +00003262 llvm::StringRef prefix,
3263 llvm::StringRef ClassName,
Chris Lattner158ecb92007-10-25 17:07:24 +00003264 std::string &Result) {
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003265 if (MethodBegin == MethodEnd) return;
Mike Stump1eb44332009-09-09 15:08:12 +00003266
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003267 if (!objc_impl_method) {
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003268 /* struct _objc_method {
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003269 SEL _cmd;
3270 char *method_types;
3271 void *_imp;
3272 }
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003273 */
Chris Lattner158ecb92007-10-25 17:07:24 +00003274 Result += "\nstruct _objc_method {\n";
3275 Result += "\tSEL _cmd;\n";
3276 Result += "\tchar *method_types;\n";
3277 Result += "\tvoid *_imp;\n";
3278 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003279
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003280 objc_impl_method = true;
Fariborz Jahanian776d6ff2007-10-19 00:36:46 +00003281 }
Mike Stump1eb44332009-09-09 15:08:12 +00003282
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003283 // Build _objc_method_list for class's methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003284
Steve Naroff946a6932008-03-11 00:12:29 +00003285 /* struct {
3286 struct _objc_method_list *next_method;
3287 int method_count;
3288 struct _objc_method method_list[];
3289 }
3290 */
Douglas Gregor653f1b12009-04-23 01:02:12 +00003291 unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
Steve Naroff946a6932008-03-11 00:12:29 +00003292 Result += "\nstatic struct {\n";
3293 Result += "\tstruct _objc_method_list *next_method;\n";
3294 Result += "\tint method_count;\n";
3295 Result += "\tstruct _objc_method method_list[";
Douglas Gregor653f1b12009-04-23 01:02:12 +00003296 Result += utostr(NumMethods);
Steve Naroff946a6932008-03-11 00:12:29 +00003297 Result += "];\n} _OBJC_";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003298 Result += prefix;
3299 Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
3300 Result += "_METHODS_";
3301 Result += ClassName;
Steve Naroffdbb65432008-03-12 17:18:30 +00003302 Result += " __attribute__ ((used, section (\"__OBJC, __";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003303 Result += IsInstanceMethod ? "inst" : "cls";
3304 Result += "_meth\")))= ";
Douglas Gregor653f1b12009-04-23 01:02:12 +00003305 Result += "{\n\t0, " + utostr(NumMethods) + "\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003306
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003307 Result += "\t,{{(SEL)\"";
Chris Lattner077bf5e2008-11-24 03:33:13 +00003308 Result += (*MethodBegin)->getSelector().getAsString().c_str();
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003309 std::string MethodTypeString;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003310 Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003311 Result += "\", \"";
3312 Result += MethodTypeString;
Steve Naroff946a6932008-03-11 00:12:29 +00003313 Result += "\", (void *)";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003314 Result += MethodInternalNames[*MethodBegin];
3315 Result += "}\n";
3316 for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
3317 Result += "\t ,{(SEL)\"";
Chris Lattner077bf5e2008-11-24 03:33:13 +00003318 Result += (*MethodBegin)->getSelector().getAsString().c_str();
Fariborz Jahanian33e1d642007-10-29 22:57:28 +00003319 std::string MethodTypeString;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003320 Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
Fariborz Jahanian33e1d642007-10-29 22:57:28 +00003321 Result += "\", \"";
3322 Result += MethodTypeString;
Steve Naroff946a6932008-03-11 00:12:29 +00003323 Result += "\", (void *)";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003324 Result += MethodInternalNames[*MethodBegin];
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00003325 Result += "}\n";
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003326 }
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003327 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003328}
3329
Steve Naroff621edce2009-04-29 16:37:50 +00003330/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
Chris Lattner780f3292008-07-21 21:32:27 +00003331void RewriteObjC::
Daniel Dunbar4087f272010-08-17 22:39:59 +00003332RewriteObjCProtocolMetaData(ObjCProtocolDecl *PDecl, llvm::StringRef prefix,
3333 llvm::StringRef ClassName, std::string &Result) {
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003334 static bool objc_protocol_methods = false;
Steve Naroff621edce2009-04-29 16:37:50 +00003335
3336 // Output struct protocol_methods holder of method selector and type.
3337 if (!objc_protocol_methods && !PDecl->isForwardDecl()) {
3338 /* struct protocol_methods {
3339 SEL _cmd;
3340 char *method_types;
3341 }
3342 */
3343 Result += "\nstruct _protocol_methods {\n";
3344 Result += "\tstruct objc_selector *_cmd;\n";
3345 Result += "\tchar *method_types;\n";
3346 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003347
Steve Naroff621edce2009-04-29 16:37:50 +00003348 objc_protocol_methods = true;
3349 }
3350 // Do not synthesize the protocol more than once.
3351 if (ObjCSynthesizedProtocols.count(PDecl))
3352 return;
Mike Stump1eb44332009-09-09 15:08:12 +00003353
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003354 if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
3355 unsigned NumMethods = std::distance(PDecl->instmeth_begin(),
3356 PDecl->instmeth_end());
Steve Naroff621edce2009-04-29 16:37:50 +00003357 /* struct _objc_protocol_method_list {
3358 int protocol_method_count;
3359 struct protocol_methods protocols[];
3360 }
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003361 */
Steve Naroff621edce2009-04-29 16:37:50 +00003362 Result += "\nstatic struct {\n";
3363 Result += "\tint protocol_method_count;\n";
3364 Result += "\tstruct _protocol_methods protocol_methods[";
3365 Result += utostr(NumMethods);
3366 Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_";
3367 Result += PDecl->getNameAsString();
3368 Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= "
3369 "{\n\t" + utostr(NumMethods) + "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003370
Steve Naroff621edce2009-04-29 16:37:50 +00003371 // Output instance methods declared in this protocol.
Mike Stump1eb44332009-09-09 15:08:12 +00003372 for (ObjCProtocolDecl::instmeth_iterator
3373 I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
Steve Naroff621edce2009-04-29 16:37:50 +00003374 I != E; ++I) {
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003375 if (I == PDecl->instmeth_begin())
Steve Naroff621edce2009-04-29 16:37:50 +00003376 Result += "\t ,{{(struct objc_selector *)\"";
3377 else
3378 Result += "\t ,{(struct objc_selector *)\"";
Daniel Dunbar4087f272010-08-17 22:39:59 +00003379 Result += (*I)->getSelector().getAsString();
Steve Naroff621edce2009-04-29 16:37:50 +00003380 std::string MethodTypeString;
3381 Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
3382 Result += "\", \"";
3383 Result += MethodTypeString;
3384 Result += "\"}\n";
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003385 }
Steve Naroff621edce2009-04-29 16:37:50 +00003386 Result += "\t }\n};\n";
3387 }
Mike Stump1eb44332009-09-09 15:08:12 +00003388
Steve Naroff621edce2009-04-29 16:37:50 +00003389 // Output class methods declared in this protocol.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003390 unsigned NumMethods = std::distance(PDecl->classmeth_begin(),
3391 PDecl->classmeth_end());
Steve Naroff621edce2009-04-29 16:37:50 +00003392 if (NumMethods > 0) {
3393 /* struct _objc_protocol_method_list {
3394 int protocol_method_count;
3395 struct protocol_methods protocols[];
3396 }
3397 */
3398 Result += "\nstatic struct {\n";
3399 Result += "\tint protocol_method_count;\n";
3400 Result += "\tstruct _protocol_methods protocol_methods[";
3401 Result += utostr(NumMethods);
3402 Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_";
3403 Result += PDecl->getNameAsString();
3404 Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
3405 "{\n\t";
3406 Result += utostr(NumMethods);
3407 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003408
Steve Naroff621edce2009-04-29 16:37:50 +00003409 // Output instance methods declared in this protocol.
Mike Stump1eb44332009-09-09 15:08:12 +00003410 for (ObjCProtocolDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003411 I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
Steve Naroff621edce2009-04-29 16:37:50 +00003412 I != E; ++I) {
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003413 if (I == PDecl->classmeth_begin())
Steve Naroff621edce2009-04-29 16:37:50 +00003414 Result += "\t ,{{(struct objc_selector *)\"";
3415 else
3416 Result += "\t ,{(struct objc_selector *)\"";
Daniel Dunbar4087f272010-08-17 22:39:59 +00003417 Result += (*I)->getSelector().getAsString();
Steve Naroff621edce2009-04-29 16:37:50 +00003418 std::string MethodTypeString;
3419 Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
3420 Result += "\", \"";
3421 Result += MethodTypeString;
3422 Result += "\"}\n";
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003423 }
Steve Naroff621edce2009-04-29 16:37:50 +00003424 Result += "\t }\n};\n";
3425 }
3426
3427 // Output:
3428 /* struct _objc_protocol {
3429 // Objective-C 1.0 extensions
3430 struct _objc_protocol_extension *isa;
3431 char *protocol_name;
3432 struct _objc_protocol **protocol_list;
3433 struct _objc_protocol_method_list *instance_methods;
3434 struct _objc_protocol_method_list *class_methods;
Mike Stump1eb44332009-09-09 15:08:12 +00003435 };
Steve Naroff621edce2009-04-29 16:37:50 +00003436 */
3437 static bool objc_protocol = false;
3438 if (!objc_protocol) {
3439 Result += "\nstruct _objc_protocol {\n";
3440 Result += "\tstruct _objc_protocol_extension *isa;\n";
3441 Result += "\tchar *protocol_name;\n";
3442 Result += "\tstruct _objc_protocol **protocol_list;\n";
3443 Result += "\tstruct _objc_protocol_method_list *instance_methods;\n";
3444 Result += "\tstruct _objc_protocol_method_list *class_methods;\n";
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003445 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003446
Steve Naroff621edce2009-04-29 16:37:50 +00003447 objc_protocol = true;
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003448 }
Mike Stump1eb44332009-09-09 15:08:12 +00003449
Steve Naroff621edce2009-04-29 16:37:50 +00003450 Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_";
3451 Result += PDecl->getNameAsString();
3452 Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= "
3453 "{\n\t0, \"";
3454 Result += PDecl->getNameAsString();
3455 Result += "\", 0, ";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003456 if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
Steve Naroff621edce2009-04-29 16:37:50 +00003457 Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
3458 Result += PDecl->getNameAsString();
3459 Result += ", ";
3460 }
3461 else
3462 Result += "0, ";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003463 if (PDecl->classmeth_begin() != PDecl->classmeth_end()) {
Steve Naroff621edce2009-04-29 16:37:50 +00003464 Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_";
3465 Result += PDecl->getNameAsString();
3466 Result += "\n";
3467 }
3468 else
3469 Result += "0\n";
3470 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003471
Steve Naroff621edce2009-04-29 16:37:50 +00003472 // Mark this protocol as having been generated.
3473 if (!ObjCSynthesizedProtocols.insert(PDecl))
3474 assert(false && "protocol already synthesized");
3475
3476}
3477
3478void RewriteObjC::
3479RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Protocols,
Daniel Dunbar4087f272010-08-17 22:39:59 +00003480 llvm::StringRef prefix, llvm::StringRef ClassName,
Steve Naroff621edce2009-04-29 16:37:50 +00003481 std::string &Result) {
3482 if (Protocols.empty()) return;
Mike Stump1eb44332009-09-09 15:08:12 +00003483
Steve Naroff621edce2009-04-29 16:37:50 +00003484 for (unsigned i = 0; i != Protocols.size(); i++)
3485 RewriteObjCProtocolMetaData(Protocols[i], prefix, ClassName, Result);
3486
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003487 // Output the top lovel protocol meta-data for the class.
3488 /* struct _objc_protocol_list {
3489 struct _objc_protocol_list *next;
3490 int protocol_count;
3491 struct _objc_protocol *class_protocols[];
3492 }
3493 */
3494 Result += "\nstatic struct {\n";
3495 Result += "\tstruct _objc_protocol_list *next;\n";
3496 Result += "\tint protocol_count;\n";
3497 Result += "\tstruct _objc_protocol *class_protocols[";
3498 Result += utostr(Protocols.size());
3499 Result += "];\n} _OBJC_";
3500 Result += prefix;
3501 Result += "_PROTOCOLS_";
3502 Result += ClassName;
3503 Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
3504 "{\n\t0, ";
3505 Result += utostr(Protocols.size());
3506 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003507
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003508 Result += "\t,{&_OBJC_PROTOCOL_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003509 Result += Protocols[0]->getNameAsString();
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003510 Result += " \n";
Mike Stump1eb44332009-09-09 15:08:12 +00003511
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003512 for (unsigned i = 1; i != Protocols.size(); i++) {
3513 Result += "\t ,&_OBJC_PROTOCOL_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003514 Result += Protocols[i]->getNameAsString();
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003515 Result += "\n";
3516 }
3517 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003518}
3519
Steve Naroff621edce2009-04-29 16:37:50 +00003520
Mike Stump1eb44332009-09-09 15:08:12 +00003521/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003522/// implementation.
Steve Naroffb29b4272008-04-14 22:03:09 +00003523void RewriteObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003524 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003525 ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003526 // Find category declaration for this implementation.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003527 ObjCCategoryDecl *CDecl;
Mike Stump1eb44332009-09-09 15:08:12 +00003528 for (CDecl = ClassDecl->getCategoryList(); CDecl;
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003529 CDecl = CDecl->getNextClassCategory())
3530 if (CDecl->getIdentifier() == IDecl->getIdentifier())
3531 break;
Mike Stump1eb44332009-09-09 15:08:12 +00003532
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003533 std::string FullCategoryName = ClassDecl->getNameAsString();
Chris Lattnereb44eee2007-12-23 01:40:15 +00003534 FullCategoryName += '_';
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003535 FullCategoryName += IDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003536
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003537 // Build _objc_method_list for class's instance methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003538 llvm::SmallVector<ObjCMethodDecl *, 32>
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003539 InstanceMethods(IDecl->instmeth_begin(), IDecl->instmeth_end());
Douglas Gregor653f1b12009-04-23 01:02:12 +00003540
3541 // If any of our property implementations have associated getters or
3542 // setters, produce metadata for them as well.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003543 for (ObjCImplDecl::propimpl_iterator Prop = IDecl->propimpl_begin(),
3544 PropEnd = IDecl->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00003545 Prop != PropEnd; ++Prop) {
3546 if ((*Prop)->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
3547 continue;
3548 if (!(*Prop)->getPropertyIvarDecl())
3549 continue;
3550 ObjCPropertyDecl *PD = (*Prop)->getPropertyDecl();
3551 if (!PD)
3552 continue;
3553 if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
3554 InstanceMethods.push_back(Getter);
3555 if (PD->isReadOnly())
3556 continue;
3557 if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
3558 InstanceMethods.push_back(Setter);
3559 }
3560 RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
Chris Lattnereb44eee2007-12-23 01:40:15 +00003561 true, "CATEGORY_", FullCategoryName.c_str(),
3562 Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003563
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003564 // Build _objc_method_list for class's class methods if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003565 RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
Chris Lattnereb44eee2007-12-23 01:40:15 +00003566 false, "CATEGORY_", FullCategoryName.c_str(),
3567 Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003568
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003569 // Protocols referenced in class declaration?
Fariborz Jahanianbac97d42007-11-13 22:09:49 +00003570 // Null CDecl is case of a category implementation with no category interface
3571 if (CDecl)
Steve Naroff621edce2009-04-29 16:37:50 +00003572 RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(), "CATEGORY",
Daniel Dunbar4087f272010-08-17 22:39:59 +00003573 FullCategoryName, Result);
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003574 /* struct _objc_category {
3575 char *category_name;
3576 char *class_name;
3577 struct _objc_method_list *instance_methods;
3578 struct _objc_method_list *class_methods;
3579 struct _objc_protocol_list *protocols;
3580 // Objective-C 1.0 extensions
3581 uint32_t size; // sizeof (struct _objc_category)
Mike Stump1eb44332009-09-09 15:08:12 +00003582 struct _objc_property_list *instance_properties; // category's own
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003583 // @property decl.
Mike Stump1eb44332009-09-09 15:08:12 +00003584 };
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003585 */
Mike Stump1eb44332009-09-09 15:08:12 +00003586
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003587 static bool objc_category = false;
3588 if (!objc_category) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003589 Result += "\nstruct _objc_category {\n";
3590 Result += "\tchar *category_name;\n";
3591 Result += "\tchar *class_name;\n";
3592 Result += "\tstruct _objc_method_list *instance_methods;\n";
3593 Result += "\tstruct _objc_method_list *class_methods;\n";
3594 Result += "\tstruct _objc_protocol_list *protocols;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003595 Result += "\tunsigned int size;\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003596 Result += "\tstruct _objc_property_list *instance_properties;\n";
3597 Result += "};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003598 objc_category = true;
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003599 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003600 Result += "\nstatic struct _objc_category _OBJC_CATEGORY_";
3601 Result += FullCategoryName;
Steve Naroffdbb65432008-03-12 17:18:30 +00003602 Result += " __attribute__ ((used, section (\"__OBJC, __category\")))= {\n\t\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003603 Result += IDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003604 Result += "\"\n\t, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003605 Result += ClassDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003606 Result += "\"\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003607
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003608 if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003609 Result += "\t, (struct _objc_method_list *)"
3610 "&_OBJC_CATEGORY_INSTANCE_METHODS_";
3611 Result += FullCategoryName;
3612 Result += "\n";
3613 }
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003614 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003615 Result += "\t, 0\n";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003616 if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003617 Result += "\t, (struct _objc_method_list *)"
3618 "&_OBJC_CATEGORY_CLASS_METHODS_";
3619 Result += FullCategoryName;
3620 Result += "\n";
3621 }
3622 else
3623 Result += "\t, 0\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003624
Chris Lattnercafeb352009-02-20 18:18:36 +00003625 if (CDecl && CDecl->protocol_begin() != CDecl->protocol_end()) {
Mike Stump1eb44332009-09-09 15:08:12 +00003626 Result += "\t, (struct _objc_protocol_list *)&_OBJC_CATEGORY_PROTOCOLS_";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003627 Result += FullCategoryName;
3628 Result += "\n";
3629 }
3630 else
3631 Result += "\t, 0\n";
3632 Result += "\t, sizeof(struct _objc_category), 0\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003633}
3634
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003635/// SynthesizeIvarOffsetComputation - This rutine synthesizes computation of
3636/// ivar offset.
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +00003637void RewriteObjC::SynthesizeIvarOffsetComputation(ObjCContainerDecl *IDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00003638 ObjCIvarDecl *ivar,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003639 std::string &Result) {
Steve Naroff8f3b2652008-07-16 18:22:22 +00003640 if (ivar->isBitField()) {
3641 // FIXME: The hack below doesn't work for bitfields. For now, we simply
3642 // place all bitfields at offset 0.
3643 Result += "0";
3644 } else {
3645 Result += "__OFFSETOFIVAR__(struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003646 Result += IDecl->getNameAsString();
Steve Naroff8f3b2652008-07-16 18:22:22 +00003647 if (LangOpts.Microsoft)
3648 Result += "_IMPL";
3649 Result += ", ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003650 Result += ivar->getNameAsString();
Steve Naroff8f3b2652008-07-16 18:22:22 +00003651 Result += ")";
3652 }
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003653}
3654
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003655//===----------------------------------------------------------------------===//
3656// Meta Data Emission
3657//===----------------------------------------------------------------------===//
3658
Steve Naroffb29b4272008-04-14 22:03:09 +00003659void RewriteObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003660 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003661 ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
Mike Stump1eb44332009-09-09 15:08:12 +00003662
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003663 // Explictly declared @interface's are already synthesized.
Steve Naroff33feeb02009-04-20 20:09:33 +00003664 if (CDecl->isImplicitInterfaceDecl()) {
Mike Stump1eb44332009-09-09 15:08:12 +00003665 // FIXME: Implementation of a class with no @interface (legacy) doese not
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003666 // produce correct synthesis as yet.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003667 SynthesizeObjCInternalStruct(CDecl, Result);
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003668 }
Mike Stump1eb44332009-09-09 15:08:12 +00003669
Chris Lattnerbe6df082007-12-12 07:56:42 +00003670 // Build _objc_ivar_list metadata for classes ivars if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003671 unsigned NumIvars = !IDecl->ivar_empty()
Mike Stump1eb44332009-09-09 15:08:12 +00003672 ? IDecl->ivar_size()
Chris Lattnerf3a7af92008-03-16 21:08:55 +00003673 : (CDecl ? CDecl->ivar_size() : 0);
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003674 if (NumIvars > 0) {
3675 static bool objc_ivar = false;
3676 if (!objc_ivar) {
3677 /* struct _objc_ivar {
3678 char *ivar_name;
3679 char *ivar_type;
3680 int ivar_offset;
Mike Stump1eb44332009-09-09 15:08:12 +00003681 };
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003682 */
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003683 Result += "\nstruct _objc_ivar {\n";
3684 Result += "\tchar *ivar_name;\n";
3685 Result += "\tchar *ivar_type;\n";
3686 Result += "\tint ivar_offset;\n";
3687 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003688
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003689 objc_ivar = true;
3690 }
3691
Steve Naroff946a6932008-03-11 00:12:29 +00003692 /* struct {
3693 int ivar_count;
3694 struct _objc_ivar ivar_list[nIvars];
Mike Stump1eb44332009-09-09 15:08:12 +00003695 };
Steve Naroff946a6932008-03-11 00:12:29 +00003696 */
Mike Stump1eb44332009-09-09 15:08:12 +00003697 Result += "\nstatic struct {\n";
Steve Naroff946a6932008-03-11 00:12:29 +00003698 Result += "\tint ivar_count;\n";
3699 Result += "\tstruct _objc_ivar ivar_list[";
3700 Result += utostr(NumIvars);
3701 Result += "];\n} _OBJC_INSTANCE_VARIABLES_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003702 Result += IDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003703 Result += " __attribute__ ((used, section (\"__OBJC, __instance_vars\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003704 "{\n\t";
3705 Result += utostr(NumIvars);
3706 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003707
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003708 ObjCInterfaceDecl::ivar_iterator IVI, IVE;
Douglas Gregor8f36aba2009-04-23 03:23:08 +00003709 llvm::SmallVector<ObjCIvarDecl *, 8> IVars;
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003710 if (!IDecl->ivar_empty()) {
Fariborz Jahanian11062e12010-02-19 00:31:17 +00003711 for (ObjCInterfaceDecl::ivar_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003712 IV = IDecl->ivar_begin(), IVEnd = IDecl->ivar_end();
Douglas Gregor8f36aba2009-04-23 03:23:08 +00003713 IV != IVEnd; ++IV)
3714 IVars.push_back(*IV);
Fariborz Jahanian11062e12010-02-19 00:31:17 +00003715 IVI = IDecl->ivar_begin();
3716 IVE = IDecl->ivar_end();
Chris Lattnerbe6df082007-12-12 07:56:42 +00003717 } else {
3718 IVI = CDecl->ivar_begin();
3719 IVE = CDecl->ivar_end();
3720 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003721 Result += "\t,{{\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003722 Result += (*IVI)->getNameAsString();
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003723 Result += "\", \"";
Steve Naroff621edce2009-04-29 16:37:50 +00003724 std::string TmpString, StrEncoding;
3725 Context->getObjCEncodingForType((*IVI)->getType(), TmpString, *IVI);
3726 QuoteDoublequotes(TmpString, StrEncoding);
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003727 Result += StrEncoding;
3728 Result += "\", ";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003729 SynthesizeIvarOffsetComputation(IDecl, *IVI, Result);
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003730 Result += "}\n";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003731 for (++IVI; IVI != IVE; ++IVI) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003732 Result += "\t ,{\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003733 Result += (*IVI)->getNameAsString();
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003734 Result += "\", \"";
Steve Naroff621edce2009-04-29 16:37:50 +00003735 std::string TmpString, StrEncoding;
3736 Context->getObjCEncodingForType((*IVI)->getType(), TmpString, *IVI);
3737 QuoteDoublequotes(TmpString, StrEncoding);
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003738 Result += StrEncoding;
3739 Result += "\", ";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003740 SynthesizeIvarOffsetComputation(IDecl, (*IVI), Result);
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003741 Result += "}\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003742 }
Mike Stump1eb44332009-09-09 15:08:12 +00003743
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003744 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003745 }
Mike Stump1eb44332009-09-09 15:08:12 +00003746
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003747 // Build _objc_method_list for class's instance methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003748 llvm::SmallVector<ObjCMethodDecl *, 32>
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003749 InstanceMethods(IDecl->instmeth_begin(), IDecl->instmeth_end());
Douglas Gregor653f1b12009-04-23 01:02:12 +00003750
3751 // If any of our property implementations have associated getters or
3752 // setters, produce metadata for them as well.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003753 for (ObjCImplDecl::propimpl_iterator Prop = IDecl->propimpl_begin(),
3754 PropEnd = IDecl->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00003755 Prop != PropEnd; ++Prop) {
3756 if ((*Prop)->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
3757 continue;
3758 if (!(*Prop)->getPropertyIvarDecl())
3759 continue;
3760 ObjCPropertyDecl *PD = (*Prop)->getPropertyDecl();
3761 if (!PD)
3762 continue;
3763 if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
3764 InstanceMethods.push_back(Getter);
3765 if (PD->isReadOnly())
3766 continue;
3767 if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
3768 InstanceMethods.push_back(Setter);
3769 }
3770 RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
Daniel Dunbar4087f272010-08-17 22:39:59 +00003771 true, "", IDecl->getName(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003772
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003773 // Build _objc_method_list for class's class methods if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003774 RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
Daniel Dunbar4087f272010-08-17 22:39:59 +00003775 false, "", IDecl->getName(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003776
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003777 // Protocols referenced in class declaration?
Steve Naroff621edce2009-04-29 16:37:50 +00003778 RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(),
Daniel Dunbar4087f272010-08-17 22:39:59 +00003779 "CLASS", CDecl->getName(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003780
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003781 // Declaration of class/meta-class metadata
3782 /* struct _objc_class {
3783 struct _objc_class *isa; // or const char *root_class_name when metadata
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003784 const char *super_class_name;
3785 char *name;
3786 long version;
3787 long info;
3788 long instance_size;
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003789 struct _objc_ivar_list *ivars;
3790 struct _objc_method_list *methods;
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003791 struct objc_cache *cache;
3792 struct objc_protocol_list *protocols;
3793 const char *ivar_layout;
3794 struct _objc_class_ext *ext;
Mike Stump1eb44332009-09-09 15:08:12 +00003795 };
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003796 */
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003797 static bool objc_class = false;
3798 if (!objc_class) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003799 Result += "\nstruct _objc_class {\n";
3800 Result += "\tstruct _objc_class *isa;\n";
3801 Result += "\tconst char *super_class_name;\n";
3802 Result += "\tchar *name;\n";
3803 Result += "\tlong version;\n";
3804 Result += "\tlong info;\n";
3805 Result += "\tlong instance_size;\n";
3806 Result += "\tstruct _objc_ivar_list *ivars;\n";
3807 Result += "\tstruct _objc_method_list *methods;\n";
3808 Result += "\tstruct objc_cache *cache;\n";
3809 Result += "\tstruct _objc_protocol_list *protocols;\n";
3810 Result += "\tconst char *ivar_layout;\n";
3811 Result += "\tstruct _objc_class_ext *ext;\n";
3812 Result += "};\n";
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003813 objc_class = true;
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003814 }
Mike Stump1eb44332009-09-09 15:08:12 +00003815
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003816 // Meta-class metadata generation.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003817 ObjCInterfaceDecl *RootClass = 0;
3818 ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003819 while (SuperClass) {
3820 RootClass = SuperClass;
3821 SuperClass = SuperClass->getSuperClass();
3822 }
3823 SuperClass = CDecl->getSuperClass();
Mike Stump1eb44332009-09-09 15:08:12 +00003824
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003825 Result += "\nstatic struct _objc_class _OBJC_METACLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003826 Result += CDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003827 Result += " __attribute__ ((used, section (\"__OBJC, __meta_class\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003828 "{\n\t(struct _objc_class *)\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003829 Result += (RootClass ? RootClass->getNameAsString() : CDecl->getNameAsString());
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003830 Result += "\"";
3831
3832 if (SuperClass) {
3833 Result += ", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003834 Result += SuperClass->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003835 Result += "\", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003836 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003837 Result += "\"";
3838 }
3839 else {
3840 Result += ", 0, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003841 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003842 Result += "\"";
3843 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003844 // Set 'ivars' field for root class to 0. ObjC1 runtime does not use it.
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003845 // 'info' field is initialized to CLS_META(2) for metaclass
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003846 Result += ", 0,2, sizeof(struct _objc_class), 0";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003847 if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
Steve Naroff23f41272008-03-11 18:14:26 +00003848 Result += "\n\t, (struct _objc_method_list *)&_OBJC_CLASS_METHODS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003849 Result += IDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003850 Result += "\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003851 }
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003852 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003853 Result += ", 0\n";
Chris Lattnercafeb352009-02-20 18:18:36 +00003854 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003855 Result += "\t,0, (struct _objc_protocol_list *)&_OBJC_CLASS_PROTOCOLS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003856 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003857 Result += ",0,0\n";
3858 }
Fariborz Jahanian454cb012007-10-24 20:54:23 +00003859 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003860 Result += "\t,0,0,0,0\n";
3861 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003862
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003863 // class metadata generation.
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003864 Result += "\nstatic struct _objc_class _OBJC_CLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003865 Result += CDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003866 Result += " __attribute__ ((used, section (\"__OBJC, __class\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003867 "{\n\t&_OBJC_METACLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003868 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003869 if (SuperClass) {
3870 Result += ", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003871 Result += SuperClass->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003872 Result += "\", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003873 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003874 Result += "\"";
3875 }
3876 else {
3877 Result += ", 0, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003878 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003879 Result += "\"";
3880 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003881 // 'info' field is initialized to CLS_CLASS(1) for class
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003882 Result += ", 0,1";
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003883 if (!ObjCSynthesizedStructs.count(CDecl))
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003884 Result += ",0";
3885 else {
3886 // class has size. Must synthesize its size.
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00003887 Result += ",sizeof(struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003888 Result += CDecl->getNameAsString();
Steve Naroffba9ac4e2008-03-10 23:33:22 +00003889 if (LangOpts.Microsoft)
3890 Result += "_IMPL";
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003891 Result += ")";
3892 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003893 if (NumIvars > 0) {
Steve Naroffc0a123c2008-03-11 17:37:02 +00003894 Result += ", (struct _objc_ivar_list *)&_OBJC_INSTANCE_VARIABLES_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003895 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003896 Result += "\n\t";
3897 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003898 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003899 Result += ",0";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003900 if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
Steve Naroff946a6932008-03-11 00:12:29 +00003901 Result += ", (struct _objc_method_list *)&_OBJC_INSTANCE_METHODS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003902 Result += CDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003903 Result += ", 0\n\t";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003904 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003905 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003906 Result += ",0,0";
Chris Lattnercafeb352009-02-20 18:18:36 +00003907 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003908 Result += ", (struct _objc_protocol_list*)&_OBJC_CLASS_PROTOCOLS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003909 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003910 Result += ", 0,0\n";
3911 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003912 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003913 Result += ",0,0,0\n";
3914 Result += "};\n";
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003915}
Fariborz Jahanianf4d331d2007-10-18 22:09:03 +00003916
Fariborz Jahanian7a3279d2007-11-13 19:21:13 +00003917/// RewriteImplementations - This routine rewrites all method implementations
3918/// and emits meta-data.
3919
Steve Narofface66252008-11-13 20:07:04 +00003920void RewriteObjC::RewriteImplementations() {
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003921 int ClsDefCount = ClassImplementation.size();
3922 int CatDefCount = CategoryImplementation.size();
Mike Stump1eb44332009-09-09 15:08:12 +00003923
Fariborz Jahanian7a3279d2007-11-13 19:21:13 +00003924 // Rewrite implemented methods
3925 for (int i = 0; i < ClsDefCount; i++)
3926 RewriteImplementationDecl(ClassImplementation[i]);
Mike Stump1eb44332009-09-09 15:08:12 +00003927
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00003928 for (int i = 0; i < CatDefCount; i++)
3929 RewriteImplementationDecl(CategoryImplementation[i]);
Steve Narofface66252008-11-13 20:07:04 +00003930}
Mike Stump1eb44332009-09-09 15:08:12 +00003931
Steve Narofface66252008-11-13 20:07:04 +00003932void RewriteObjC::SynthesizeMetaDataIntoBuffer(std::string &Result) {
3933 int ClsDefCount = ClassImplementation.size();
3934 int CatDefCount = CategoryImplementation.size();
Fariborz Jahanian7c63fdd2010-02-26 01:42:20 +00003935
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003936 // For each implemented class, write out all its meta data.
Fariborz Jahanianf4d331d2007-10-18 22:09:03 +00003937 for (int i = 0; i < ClsDefCount; i++)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003938 RewriteObjCClassMetaData(ClassImplementation[i], Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003939
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003940 // For each implemented category, write out all its meta data.
3941 for (int i = 0; i < CatDefCount; i++)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003942 RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
Steve Naroff621edce2009-04-29 16:37:50 +00003943
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003944 // Write objc_symtab metadata
3945 /*
3946 struct _objc_symtab
3947 {
3948 long sel_ref_cnt;
3949 SEL *refs;
3950 short cls_def_cnt;
3951 short cat_def_cnt;
3952 void *defs[cls_def_cnt + cat_def_cnt];
Mike Stump1eb44332009-09-09 15:08:12 +00003953 };
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003954 */
Mike Stump1eb44332009-09-09 15:08:12 +00003955
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003956 Result += "\nstruct _objc_symtab {\n";
3957 Result += "\tlong sel_ref_cnt;\n";
3958 Result += "\tSEL *refs;\n";
3959 Result += "\tshort cls_def_cnt;\n";
3960 Result += "\tshort cat_def_cnt;\n";
3961 Result += "\tvoid *defs[" + utostr(ClsDefCount + CatDefCount)+ "];\n";
3962 Result += "};\n\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003963
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003964 Result += "static struct _objc_symtab "
Steve Naroffdbb65432008-03-12 17:18:30 +00003965 "_OBJC_SYMBOLS __attribute__((used, section (\"__OBJC, __symbols\")))= {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003966 Result += "\t0, 0, " + utostr(ClsDefCount)
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003967 + ", " + utostr(CatDefCount) + "\n";
3968 for (int i = 0; i < ClsDefCount; i++) {
3969 Result += "\t,&_OBJC_CLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003970 Result += ClassImplementation[i]->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003971 Result += "\n";
3972 }
Mike Stump1eb44332009-09-09 15:08:12 +00003973
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003974 for (int i = 0; i < CatDefCount; i++) {
3975 Result += "\t,&_OBJC_CATEGORY_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003976 Result += CategoryImplementation[i]->getClassInterface()->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003977 Result += "_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003978 Result += CategoryImplementation[i]->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003979 Result += "\n";
3980 }
Mike Stump1eb44332009-09-09 15:08:12 +00003981
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003982 Result += "};\n\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003983
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003984 // Write objc_module metadata
Mike Stump1eb44332009-09-09 15:08:12 +00003985
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003986 /*
3987 struct _objc_module {
3988 long version;
3989 long size;
3990 const char *name;
3991 struct _objc_symtab *symtab;
3992 }
3993 */
Mike Stump1eb44332009-09-09 15:08:12 +00003994
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003995 Result += "\nstruct _objc_module {\n";
3996 Result += "\tlong version;\n";
3997 Result += "\tlong size;\n";
3998 Result += "\tconst char *name;\n";
3999 Result += "\tstruct _objc_symtab *symtab;\n";
4000 Result += "};\n\n";
4001 Result += "static struct _objc_module "
Steve Naroffdbb65432008-03-12 17:18:30 +00004002 "_OBJC_MODULES __attribute__ ((used, section (\"__OBJC, __module_info\")))= {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004003 Result += "\t" + utostr(OBJC_ABI_VERSION) +
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00004004 ", sizeof(struct _objc_module), \"\", &_OBJC_SYMBOLS\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00004005 Result += "};\n\n";
Steve Naroff4f943c22008-03-10 20:43:59 +00004006
4007 if (LangOpts.Microsoft) {
Steve Naroff621edce2009-04-29 16:37:50 +00004008 if (ProtocolExprDecls.size()) {
4009 Result += "#pragma section(\".objc_protocol$B\",long,read,write)\n";
4010 Result += "#pragma data_seg(push, \".objc_protocol$B\")\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004011 for (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
Steve Naroff621edce2009-04-29 16:37:50 +00004012 E = ProtocolExprDecls.end(); I != E; ++I) {
4013 Result += "static struct _objc_protocol *_POINTER_OBJC_PROTOCOL_";
4014 Result += (*I)->getNameAsString();
4015 Result += " = &_OBJC_PROTOCOL_";
4016 Result += (*I)->getNameAsString();
4017 Result += ";\n";
4018 }
4019 Result += "#pragma data_seg(pop)\n\n";
4020 }
Steve Naroff4f943c22008-03-10 20:43:59 +00004021 Result += "#pragma section(\".objc_module_info$B\",long,read,write)\n";
Steve Naroff19190322008-05-07 00:06:16 +00004022 Result += "#pragma data_seg(push, \".objc_module_info$B\")\n";
Steve Naroff4f943c22008-03-10 20:43:59 +00004023 Result += "static struct _objc_module *_POINTER_OBJC_MODULES = ";
4024 Result += "&_OBJC_MODULES;\n";
4025 Result += "#pragma data_seg(pop)\n\n";
4026 }
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00004027}
Chris Lattner311ff022007-10-16 22:36:42 +00004028
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004029void RewriteObjC::RewriteByRefString(std::string &ResultStr,
4030 const std::string &Name,
4031 ValueDecl *VD) {
4032 assert(BlockByRefDeclNo.count(VD) &&
4033 "RewriteByRefString: ByRef decl missing");
4034 ResultStr += "struct __Block_byref_" + Name +
4035 "_" + utostr(BlockByRefDeclNo[VD]) ;
4036}
4037
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004038static bool HasLocalVariableExternalStorage(ValueDecl *VD) {
4039 if (VarDecl *Var = dyn_cast<VarDecl>(VD))
4040 return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage());
4041 return false;
4042}
4043
Steve Naroff54055232008-10-27 17:20:55 +00004044std::string RewriteObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
Daniel Dunbar4087f272010-08-17 22:39:59 +00004045 llvm::StringRef funcName,
Steve Naroff54055232008-10-27 17:20:55 +00004046 std::string Tag) {
4047 const FunctionType *AFT = CE->getFunctionType();
4048 QualType RT = AFT->getResultType();
4049 std::string StructRef = "struct " + Tag;
Daniel Dunbarfa297fb2010-06-30 19:16:53 +00004050 std::string S = "static " + RT.getAsString(Context->PrintingPolicy) + " __" +
Daniel Dunbar4087f272010-08-17 22:39:59 +00004051 funcName.str() + "_" + "block_func_" + utostr(i);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00004052
Steve Naroff54055232008-10-27 17:20:55 +00004053 BlockDecl *BD = CE->getBlockDecl();
Mike Stump1eb44332009-09-09 15:08:12 +00004054
Douglas Gregor72564e72009-02-26 23:50:07 +00004055 if (isa<FunctionNoProtoType>(AFT)) {
Mike Stump1eb44332009-09-09 15:08:12 +00004056 // No user-supplied arguments. Still need to pass in a pointer to the
Steve Naroffdf8570d2009-02-02 17:19:26 +00004057 // block (to reference imported block decl refs).
4058 S += "(" + StructRef + " *__cself)";
Steve Naroff54055232008-10-27 17:20:55 +00004059 } else if (BD->param_empty()) {
4060 S += "(" + StructRef + " *__cself)";
4061 } else {
Douglas Gregor72564e72009-02-26 23:50:07 +00004062 const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
Steve Naroff54055232008-10-27 17:20:55 +00004063 assert(FT && "SynthesizeBlockFunc: No function proto");
4064 S += '(';
4065 // first add the implicit argument.
4066 S += StructRef + " *__cself, ";
4067 std::string ParamStr;
4068 for (BlockDecl::param_iterator AI = BD->param_begin(),
4069 E = BD->param_end(); AI != E; ++AI) {
4070 if (AI != BD->param_begin()) S += ", ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004071 ParamStr = (*AI)->getNameAsString();
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004072 QualType QT = (*AI)->getType();
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00004073 if (convertBlockPointerToFunctionPointer(QT))
4074 QT.getAsStringInternal(ParamStr, Context->PrintingPolicy);
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004075 else
4076 QT.getAsStringInternal(ParamStr, Context->PrintingPolicy);
Steve Naroff54055232008-10-27 17:20:55 +00004077 S += ParamStr;
4078 }
4079 if (FT->isVariadic()) {
4080 if (!BD->param_empty()) S += ", ";
4081 S += "...";
4082 }
4083 S += ')';
4084 }
4085 S += " {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004086
Steve Naroff54055232008-10-27 17:20:55 +00004087 // Create local declarations to avoid rewriting all closure decl ref exprs.
4088 // First, emit a declaration for all "by ref" decls.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004089 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004090 E = BlockByRefDecls.end(); I != E; ++I) {
4091 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004092 std::string Name = (*I)->getNameAsString();
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004093 std::string TypeString;
4094 RewriteByRefString(TypeString, Name, (*I));
4095 TypeString += " *";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004096 Name = TypeString + Name;
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004097 S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004098 }
Steve Naroff54055232008-10-27 17:20:55 +00004099 // Next, emit a declaration for all "by copy" declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004100 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004101 E = BlockByCopyDecls.end(); I != E; ++I) {
4102 S += " ";
Steve Naroff54055232008-10-27 17:20:55 +00004103 // Handle nested closure invocation. For example:
4104 //
4105 // void (^myImportedClosure)(void);
4106 // myImportedClosure = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00004107 //
Steve Naroff54055232008-10-27 17:20:55 +00004108 // void (^anotherClosure)(void);
4109 // anotherClosure = ^(void) {
4110 // myImportedClosure(); // import and invoke the closure
4111 // };
4112 //
Fariborz Jahaniane8c28df2010-02-16 16:21:26 +00004113 if (isTopLevelBlockPointerType((*I)->getType())) {
4114 RewriteBlockPointerTypeVariable(S, (*I));
4115 S += " = (";
4116 RewriteBlockPointerType(S, (*I)->getType());
4117 S += ")";
4118 S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
4119 }
4120 else {
Fariborz Jahanian210c2482010-02-16 17:26:03 +00004121 std::string Name = (*I)->getNameAsString();
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004122 QualType QT = (*I)->getType();
4123 if (HasLocalVariableExternalStorage(*I))
4124 QT = Context->getPointerType(QT);
4125 QT.getAsStringInternal(Name, Context->PrintingPolicy);
Fariborz Jahaniane8c28df2010-02-16 16:21:26 +00004126 S += Name + " = __cself->" +
4127 (*I)->getNameAsString() + "; // bound by copy\n";
4128 }
Steve Naroff54055232008-10-27 17:20:55 +00004129 }
4130 std::string RewrittenStr = RewrittenBlockExprs[CE];
4131 const char *cstr = RewrittenStr.c_str();
4132 while (*cstr++ != '{') ;
4133 S += cstr;
4134 S += "\n";
4135 return S;
4136}
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00004137
Steve Naroff54055232008-10-27 17:20:55 +00004138std::string RewriteObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
Daniel Dunbar4087f272010-08-17 22:39:59 +00004139 llvm::StringRef funcName,
Steve Naroff54055232008-10-27 17:20:55 +00004140 std::string Tag) {
4141 std::string StructRef = "struct " + Tag;
4142 std::string S = "static void __";
Mike Stump1eb44332009-09-09 15:08:12 +00004143
Steve Naroff54055232008-10-27 17:20:55 +00004144 S += funcName;
4145 S += "_block_copy_" + utostr(i);
4146 S += "(" + StructRef;
4147 S += "*dst, " + StructRef;
4148 S += "*src) {";
Mike Stump1eb44332009-09-09 15:08:12 +00004149 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004150 E = ImportedBlockDecls.end(); I != E; ++I) {
Steve Naroff5bc60d02008-12-16 15:50:30 +00004151 S += "_Block_object_assign((void*)&dst->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004152 S += (*I)->getNameAsString();
Steve Naroff47a24222008-12-11 20:51:38 +00004153 S += ", (void*)src->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004154 S += (*I)->getNameAsString();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004155 if (BlockByRefDeclsPtrSet.count((*I)))
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00004156 S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00004157 else
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00004158 S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
Steve Naroff54055232008-10-27 17:20:55 +00004159 }
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00004160 S += "}\n";
4161
Steve Naroff54055232008-10-27 17:20:55 +00004162 S += "\nstatic void __";
4163 S += funcName;
4164 S += "_block_dispose_" + utostr(i);
4165 S += "(" + StructRef;
4166 S += "*src) {";
Mike Stump1eb44332009-09-09 15:08:12 +00004167 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004168 E = ImportedBlockDecls.end(); I != E; ++I) {
Steve Naroff5bc60d02008-12-16 15:50:30 +00004169 S += "_Block_object_dispose((void*)src->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004170 S += (*I)->getNameAsString();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004171 if (BlockByRefDeclsPtrSet.count((*I)))
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00004172 S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00004173 else
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00004174 S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
Steve Naroff54055232008-10-27 17:20:55 +00004175 }
Mike Stump1eb44332009-09-09 15:08:12 +00004176 S += "}\n";
Steve Naroff54055232008-10-27 17:20:55 +00004177 return S;
4178}
4179
Steve Naroff01aec112009-12-06 21:14:13 +00004180std::string RewriteObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
4181 std::string Desc) {
Steve Naroffced80a82008-10-30 12:09:33 +00004182 std::string S = "\nstruct " + Tag;
Steve Naroff54055232008-10-27 17:20:55 +00004183 std::string Constructor = " " + Tag;
Mike Stump1eb44332009-09-09 15:08:12 +00004184
Steve Naroff54055232008-10-27 17:20:55 +00004185 S += " {\n struct __block_impl impl;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004186 S += " struct " + Desc;
4187 S += "* Desc;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004188
Steve Naroff01aec112009-12-06 21:14:13 +00004189 Constructor += "(void *fp, "; // Invoke function pointer.
4190 Constructor += "struct " + Desc; // Descriptor pointer.
4191 Constructor += " *desc";
Mike Stump1eb44332009-09-09 15:08:12 +00004192
Steve Naroff54055232008-10-27 17:20:55 +00004193 if (BlockDeclRefs.size()) {
4194 // Output all "by copy" declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004195 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004196 E = BlockByCopyDecls.end(); I != E; ++I) {
4197 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004198 std::string FieldName = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00004199 std::string ArgName = "_" + FieldName;
4200 // Handle nested closure invocation. For example:
4201 //
4202 // void (^myImportedBlock)(void);
4203 // myImportedBlock = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00004204 //
Steve Naroff54055232008-10-27 17:20:55 +00004205 // void (^anotherBlock)(void);
4206 // anotherBlock = ^(void) {
4207 // myImportedBlock(); // import and invoke the closure
4208 // };
4209 //
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004210 if (isTopLevelBlockPointerType((*I)->getType())) {
Steve Naroff54055232008-10-27 17:20:55 +00004211 S += "struct __block_impl *";
4212 Constructor += ", void *" + ArgName;
4213 } else {
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004214 QualType QT = (*I)->getType();
4215 if (HasLocalVariableExternalStorage(*I))
4216 QT = Context->getPointerType(QT);
4217 QT.getAsStringInternal(FieldName, Context->PrintingPolicy);
4218 QT.getAsStringInternal(ArgName, Context->PrintingPolicy);
Steve Naroff54055232008-10-27 17:20:55 +00004219 Constructor += ", " + ArgName;
4220 }
4221 S += FieldName + ";\n";
4222 }
4223 // Output all "by ref" declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004224 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004225 E = BlockByRefDecls.end(); I != E; ++I) {
4226 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004227 std::string FieldName = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00004228 std::string ArgName = "_" + FieldName;
4229 // Handle nested closure invocation. For example:
4230 //
4231 // void (^myImportedBlock)(void);
4232 // myImportedBlock = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00004233 //
Steve Naroff54055232008-10-27 17:20:55 +00004234 // void (^anotherBlock)(void);
4235 // anotherBlock = ^(void) {
4236 // myImportedBlock(); // import and invoke the closure
4237 // };
4238 //
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004239 if (isTopLevelBlockPointerType((*I)->getType())) {
Steve Naroff54055232008-10-27 17:20:55 +00004240 S += "struct __block_impl *";
4241 Constructor += ", void *" + ArgName;
4242 } else {
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004243 std::string TypeString;
4244 RewriteByRefString(TypeString, FieldName, (*I));
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004245 TypeString += " *";
4246 FieldName = TypeString + FieldName;
4247 ArgName = TypeString + ArgName;
Steve Naroff54055232008-10-27 17:20:55 +00004248 Constructor += ", " + ArgName;
4249 }
4250 S += FieldName + "; // by ref\n";
4251 }
4252 // Finish writing the constructor.
Fariborz Jahanian20432ef2010-07-28 23:27:30 +00004253 Constructor += ", int flags=0)";
4254 // Initialize all "by copy" arguments.
4255 bool firsTime = true;
4256 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
4257 E = BlockByCopyDecls.end(); I != E; ++I) {
4258 std::string Name = (*I)->getNameAsString();
4259 if (firsTime) {
4260 Constructor += " : ";
4261 firsTime = false;
4262 }
4263 else
4264 Constructor += ", ";
4265 if (isTopLevelBlockPointerType((*I)->getType()))
4266 Constructor += Name + "((struct __block_impl *)_" + Name + ")";
4267 else
4268 Constructor += Name + "(_" + Name + ")";
4269 }
4270 // Initialize all "by ref" arguments.
4271 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
4272 E = BlockByRefDecls.end(); I != E; ++I) {
4273 std::string Name = (*I)->getNameAsString();
4274 if (firsTime) {
4275 Constructor += " : ";
4276 firsTime = false;
4277 }
4278 else
4279 Constructor += ", ";
4280 if (isTopLevelBlockPointerType((*I)->getType()))
4281 Constructor += Name + "((struct __block_impl *)_"
4282 + Name + "->__forwarding)";
4283 else
4284 Constructor += Name + "(_" + Name + "->__forwarding)";
4285 }
4286
4287 Constructor += " {\n";
Steve Naroff621edce2009-04-29 16:37:50 +00004288 if (GlobalVarDecl)
4289 Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
4290 else
4291 Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004292 Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004293
Steve Naroff01aec112009-12-06 21:14:13 +00004294 Constructor += " Desc = desc;\n";
Steve Naroff54055232008-10-27 17:20:55 +00004295 } else {
4296 // Finish writing the constructor.
Steve Naroff54055232008-10-27 17:20:55 +00004297 Constructor += ", int flags=0) {\n";
Steve Naroff621edce2009-04-29 16:37:50 +00004298 if (GlobalVarDecl)
4299 Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
4300 else
4301 Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004302 Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
4303 Constructor += " Desc = desc;\n";
Steve Naroff54055232008-10-27 17:20:55 +00004304 }
4305 Constructor += " ";
4306 Constructor += "}\n";
4307 S += Constructor;
4308 S += "};\n";
4309 return S;
4310}
4311
Steve Naroff01aec112009-12-06 21:14:13 +00004312std::string RewriteObjC::SynthesizeBlockDescriptor(std::string DescTag,
4313 std::string ImplTag, int i,
Daniel Dunbar4087f272010-08-17 22:39:59 +00004314 llvm::StringRef FunName,
Steve Naroff01aec112009-12-06 21:14:13 +00004315 unsigned hasCopy) {
4316 std::string S = "\nstatic struct " + DescTag;
4317
4318 S += " {\n unsigned long reserved;\n";
4319 S += " unsigned long Block_size;\n";
4320 if (hasCopy) {
Fariborz Jahanian4fcc4fd2009-12-21 23:31:42 +00004321 S += " void (*copy)(struct ";
4322 S += ImplTag; S += "*, struct ";
4323 S += ImplTag; S += "*);\n";
4324
4325 S += " void (*dispose)(struct ";
4326 S += ImplTag; S += "*);\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004327 }
4328 S += "} ";
4329
4330 S += DescTag + "_DATA = { 0, sizeof(struct ";
4331 S += ImplTag + ")";
4332 if (hasCopy) {
Daniel Dunbar4087f272010-08-17 22:39:59 +00004333 S += ", __" + FunName.str() + "_block_copy_" + utostr(i);
4334 S += ", __" + FunName.str() + "_block_dispose_" + utostr(i);
Steve Naroff01aec112009-12-06 21:14:13 +00004335 }
4336 S += "};\n";
4337 return S;
4338}
4339
Steve Naroff54055232008-10-27 17:20:55 +00004340void RewriteObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
Daniel Dunbar4087f272010-08-17 22:39:59 +00004341 llvm::StringRef FunName) {
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004342 // Insert declaration for the function in which block literal is used.
Fariborz Jahanianbf070122010-01-15 18:14:52 +00004343 if (CurFunctionDeclToDeclareForBlock && !Blocks.empty())
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004344 RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
Fariborz Jahanian8611eb02010-03-04 21:35:37 +00004345 bool RewriteSC = (GlobalVarDecl &&
4346 !Blocks.empty() &&
John McCalld931b082010-08-26 03:08:43 +00004347 GlobalVarDecl->getStorageClass() == SC_Static &&
Fariborz Jahanian8611eb02010-03-04 21:35:37 +00004348 GlobalVarDecl->getType().getCVRQualifiers());
4349 if (RewriteSC) {
4350 std::string SC(" void __");
4351 SC += GlobalVarDecl->getNameAsString();
4352 SC += "() {}";
4353 InsertText(FunLocStart, SC);
4354 }
4355
Steve Naroff54055232008-10-27 17:20:55 +00004356 // Insert closures that were part of the function.
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004357 for (unsigned i = 0, count=0; i < Blocks.size(); i++) {
4358 CollectBlockDeclRefInfo(Blocks[i]);
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004359 // Need to copy-in the inner copied-in variables not actually used in this
4360 // block.
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004361 for (int j = 0; j < InnerDeclRefsCount[i]; j++) {
4362 BlockDeclRefExpr *Exp = InnerDeclRefs[count++];
4363 ValueDecl *VD = Exp->getDecl();
4364 BlockDeclRefs.push_back(Exp);
4365 if (!Exp->isByRef() && !BlockByCopyDeclsPtrSet.count(VD)) {
4366 BlockByCopyDeclsPtrSet.insert(VD);
4367 BlockByCopyDecls.push_back(VD);
4368 }
4369 if (Exp->isByRef() && !BlockByRefDeclsPtrSet.count(VD)) {
4370 BlockByRefDeclsPtrSet.insert(VD);
4371 BlockByRefDecls.push_back(VD);
4372 }
4373 }
Steve Naroff54055232008-10-27 17:20:55 +00004374
Daniel Dunbar4087f272010-08-17 22:39:59 +00004375 std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i);
4376 std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i);
Mike Stump1eb44332009-09-09 15:08:12 +00004377
Steve Naroff01aec112009-12-06 21:14:13 +00004378 std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);
Steve Naroff54055232008-10-27 17:20:55 +00004379
Benjamin Kramerd999b372010-02-14 14:14:16 +00004380 InsertText(FunLocStart, CI);
Steve Naroff54055232008-10-27 17:20:55 +00004381
Steve Naroff01aec112009-12-06 21:14:13 +00004382 std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);
Mike Stump1eb44332009-09-09 15:08:12 +00004383
Benjamin Kramerd999b372010-02-14 14:14:16 +00004384 InsertText(FunLocStart, CF);
Steve Naroff54055232008-10-27 17:20:55 +00004385
4386 if (ImportedBlockDecls.size()) {
Steve Naroff01aec112009-12-06 21:14:13 +00004387 std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004388 InsertText(FunLocStart, HF);
Steve Naroff54055232008-10-27 17:20:55 +00004389 }
Steve Naroff01aec112009-12-06 21:14:13 +00004390 std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
4391 ImportedBlockDecls.size() > 0);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004392 InsertText(FunLocStart, BD);
Mike Stump1eb44332009-09-09 15:08:12 +00004393
Steve Naroff54055232008-10-27 17:20:55 +00004394 BlockDeclRefs.clear();
4395 BlockByRefDecls.clear();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004396 BlockByRefDeclsPtrSet.clear();
Steve Naroff54055232008-10-27 17:20:55 +00004397 BlockByCopyDecls.clear();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00004398 BlockByCopyDeclsPtrSet.clear();
Steve Naroff54055232008-10-27 17:20:55 +00004399 ImportedBlockDecls.clear();
4400 }
Fariborz Jahanian8611eb02010-03-04 21:35:37 +00004401 if (RewriteSC) {
Fariborz Jahanian61b82e32010-03-04 18:54:29 +00004402 // Must insert any 'const/volatile/static here. Since it has been
4403 // removed as result of rewriting of block literals.
Fariborz Jahanian61b82e32010-03-04 18:54:29 +00004404 std::string SC;
John McCalld931b082010-08-26 03:08:43 +00004405 if (GlobalVarDecl->getStorageClass() == SC_Static)
Fariborz Jahanian61b82e32010-03-04 18:54:29 +00004406 SC = "static ";
Fariborz Jahanian61b82e32010-03-04 18:54:29 +00004407 if (GlobalVarDecl->getType().isConstQualified())
4408 SC += "const ";
4409 if (GlobalVarDecl->getType().isVolatileQualified())
4410 SC += "volatile ";
Fariborz Jahanian8611eb02010-03-04 21:35:37 +00004411 if (GlobalVarDecl->getType().isRestrictQualified())
4412 SC += "restrict ";
4413 InsertText(FunLocStart, SC);
Fariborz Jahanian61b82e32010-03-04 18:54:29 +00004414 }
4415
Steve Naroff54055232008-10-27 17:20:55 +00004416 Blocks.clear();
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004417 InnerDeclRefsCount.clear();
4418 InnerDeclRefs.clear();
Steve Naroff54055232008-10-27 17:20:55 +00004419 RewrittenBlockExprs.clear();
4420}
4421
4422void RewriteObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
4423 SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
Daniel Dunbar4087f272010-08-17 22:39:59 +00004424 llvm::StringRef FuncName = FD->getName();
Mike Stump1eb44332009-09-09 15:08:12 +00004425
Steve Naroff54055232008-10-27 17:20:55 +00004426 SynthesizeBlockLiterals(FunLocStart, FuncName);
4427}
4428
Fariborz Jahaniane61a1d42010-02-10 20:18:25 +00004429static void BuildUniqueMethodName(std::string &Name,
4430 ObjCMethodDecl *MD) {
4431 ObjCInterfaceDecl *IFace = MD->getClassInterface();
Daniel Dunbar4087f272010-08-17 22:39:59 +00004432 Name = IFace->getName();
Fariborz Jahaniane61a1d42010-02-10 20:18:25 +00004433 Name += "__" + MD->getSelector().getAsString();
4434 // Convert colons to underscores.
4435 std::string::size_type loc = 0;
4436 while ((loc = Name.find(":", loc)) != std::string::npos)
4437 Name.replace(loc, 1, "_");
4438}
4439
Steve Naroff54055232008-10-27 17:20:55 +00004440void RewriteObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
Steve Naroffced80a82008-10-30 12:09:33 +00004441 //fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
4442 //SourceLocation FunLocStart = MD->getLocStart();
Fariborz Jahanian0e1c99a2010-01-29 01:55:49 +00004443 SourceLocation FunLocStart = MD->getLocStart();
Fariborz Jahaniane61a1d42010-02-10 20:18:25 +00004444 std::string FuncName;
4445 BuildUniqueMethodName(FuncName, MD);
Daniel Dunbar4087f272010-08-17 22:39:59 +00004446 SynthesizeBlockLiterals(FunLocStart, FuncName);
Steve Naroff54055232008-10-27 17:20:55 +00004447}
4448
4449void RewriteObjC::GetBlockDeclRefExprs(Stmt *S) {
4450 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4451 CI != E; ++CI)
4452 if (*CI) {
4453 if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
4454 GetBlockDeclRefExprs(CBE->getBody());
4455 else
4456 GetBlockDeclRefExprs(*CI);
4457 }
4458 // Handle specific things.
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004459 if (BlockDeclRefExpr *CDRE = dyn_cast<BlockDeclRefExpr>(S)) {
Steve Naroff54055232008-10-27 17:20:55 +00004460 // FIXME: Handle enums.
4461 if (!isa<FunctionDecl>(CDRE->getDecl()))
4462 BlockDeclRefs.push_back(CDRE);
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004463 }
4464 else if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S))
4465 if (HasLocalVariableExternalStorage(DRE->getDecl())) {
4466 BlockDeclRefExpr *BDRE =
4467 new (Context)BlockDeclRefExpr(DRE->getDecl(), DRE->getType(),
4468 DRE->getLocation(), false);
4469 BlockDeclRefs.push_back(BDRE);
4470 }
4471
Steve Naroff54055232008-10-27 17:20:55 +00004472 return;
4473}
4474
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004475void RewriteObjC::GetInnerBlockDeclRefExprs(Stmt *S,
4476 llvm::SmallVector<BlockDeclRefExpr *, 8> &InnerBlockDeclRefs,
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004477 llvm::SmallPtrSet<const DeclContext *, 8> &InnerContexts) {
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004478 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4479 CI != E; ++CI)
4480 if (*CI) {
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004481 if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI)) {
4482 InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl()));
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004483 GetInnerBlockDeclRefExprs(CBE->getBody(),
4484 InnerBlockDeclRefs,
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004485 InnerContexts);
4486 }
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004487 else
4488 GetInnerBlockDeclRefExprs(*CI,
4489 InnerBlockDeclRefs,
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004490 InnerContexts);
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004491
4492 }
4493 // Handle specific things.
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004494 if (BlockDeclRefExpr *CDRE = dyn_cast<BlockDeclRefExpr>(S)) {
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004495 if (!isa<FunctionDecl>(CDRE->getDecl()) &&
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004496 !InnerContexts.count(CDRE->getDecl()->getDeclContext()))
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004497 InnerBlockDeclRefs.push_back(CDRE);
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004498 }
4499 else if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
4500 if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl()))
4501 if (Var->isFunctionOrMethodVarDecl())
4502 ImportedLocalExternalDecls.insert(Var);
4503 }
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00004504
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00004505 return;
4506}
4507
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004508/// convertFunctionTypeOfBlocks - This routine converts a function type
4509/// whose result type may be a block pointer or whose argument type(s)
4510/// might be block pointers to an equivalent funtion type replacing
4511/// all block pointers to function pointers.
4512QualType RewriteObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) {
4513 const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
4514 // FTP will be null for closures that don't take arguments.
4515 // Generate a funky cast.
4516 llvm::SmallVector<QualType, 8> ArgTypes;
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004517 QualType Res = FT->getResultType();
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00004518 bool HasBlockType = convertBlockPointerToFunctionPointer(Res);
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004519
4520 if (FTP) {
4521 for (FunctionProtoType::arg_type_iterator I = FTP->arg_type_begin(),
4522 E = FTP->arg_type_end(); I && (I != E); ++I) {
4523 QualType t = *I;
4524 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00004525 if (convertBlockPointerToFunctionPointer(t))
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004526 HasBlockType = true;
Fariborz Jahanian1f906222010-05-25 15:56:08 +00004527 ArgTypes.push_back(t);
4528 }
4529 }
4530 QualType FuncType;
4531 // FIXME. Does this work if block takes no argument but has a return type
4532 // which is of block type?
4533 if (HasBlockType)
4534 FuncType = Context->getFunctionType(Res,
4535 &ArgTypes[0], ArgTypes.size(), false/*no variadic*/, 0,
4536 false, false, 0, 0, FunctionType::ExtInfo());
4537 else FuncType = QualType(FT, 0);
4538 return FuncType;
4539}
4540
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004541Stmt *RewriteObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
Steve Naroff54055232008-10-27 17:20:55 +00004542 // Navigate to relevant type information.
Steve Naroff54055232008-10-27 17:20:55 +00004543 const BlockPointerType *CPT = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00004544
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004545 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004546 CPT = DRE->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004547 } else if (const BlockDeclRefExpr *CDRE =
4548 dyn_cast<BlockDeclRefExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004549 CPT = CDRE->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004550 } else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004551 CPT = MExpr->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004552 }
4553 else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
4554 return SynthesizeBlockCall(Exp, PRE->getSubExpr());
4555 }
4556 else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
4557 CPT = IEXPR->getType()->getAs<BlockPointerType>();
4558 else if (const ConditionalOperator *CEXPR =
4559 dyn_cast<ConditionalOperator>(BlockExp)) {
4560 Expr *LHSExp = CEXPR->getLHS();
4561 Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
4562 Expr *RHSExp = CEXPR->getRHS();
4563 Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
4564 Expr *CONDExp = CEXPR->getCond();
4565 ConditionalOperator *CondExpr =
4566 new (Context) ConditionalOperator(CONDExp,
4567 SourceLocation(), cast<Expr>(LHSStmt),
4568 SourceLocation(), cast<Expr>(RHSStmt),
4569 Exp->getType());
4570 return CondExpr;
Fariborz Jahaniane24b22b2009-12-18 01:15:21 +00004571 } else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
4572 CPT = IRE->getType()->getAs<BlockPointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004573 } else {
4574 assert(1 && "RewriteBlockClass: Bad type");
4575 }
4576 assert(CPT && "RewriteBlockClass: Bad type");
John McCall183700f2009-09-21 23:43:11 +00004577 const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
Steve Naroff54055232008-10-27 17:20:55 +00004578 assert(FT && "RewriteBlockClass: Bad type");
Douglas Gregor72564e72009-02-26 23:50:07 +00004579 const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
Steve Naroff54055232008-10-27 17:20:55 +00004580 // FTP will be null for closures that don't take arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00004581
Abramo Bagnara465d41b2010-05-11 21:36:43 +00004582 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004583 SourceLocation(),
4584 &Context->Idents.get("__block_impl"));
4585 QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
Steve Naroff54055232008-10-27 17:20:55 +00004586
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004587 // Generate a funky cast.
4588 llvm::SmallVector<QualType, 8> ArgTypes;
Mike Stump1eb44332009-09-09 15:08:12 +00004589
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004590 // Push the block argument type.
4591 ArgTypes.push_back(PtrBlock);
Steve Naroff54055232008-10-27 17:20:55 +00004592 if (FTP) {
Mike Stump1eb44332009-09-09 15:08:12 +00004593 for (FunctionProtoType::arg_type_iterator I = FTP->arg_type_begin(),
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004594 E = FTP->arg_type_end(); I && (I != E); ++I) {
4595 QualType t = *I;
4596 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Fariborz Jahanian4fc84532010-05-25 17:12:52 +00004597 (void)convertBlockPointerToFunctionPointer(t);
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004598 ArgTypes.push_back(t);
4599 }
Steve Naroff54055232008-10-27 17:20:55 +00004600 }
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004601 // Now do the pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00004602 QualType PtrToFuncCastType = Context->getFunctionType(Exp->getType(),
Douglas Gregorce056bc2010-02-21 22:15:06 +00004603 &ArgTypes[0], ArgTypes.size(), false/*no variadic*/, 0,
4604 false, false, 0, 0,
Rafael Espindola264ba482010-03-30 20:24:48 +00004605 FunctionType::ExtInfo());
Mike Stump1eb44332009-09-09 15:08:12 +00004606
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004607 PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
Mike Stump1eb44332009-09-09 15:08:12 +00004608
John McCall9d125032010-01-15 18:39:57 +00004609 CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
John McCall2de56d12010-08-25 11:45:40 +00004610 CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00004611 const_cast<Expr*>(BlockExp));
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004612 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00004613 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
4614 BlkCast);
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004615 //PE->dump();
Mike Stump1eb44332009-09-09 15:08:12 +00004616
Douglas Gregor44b43212008-12-11 16:49:14 +00004617 FieldDecl *FD = FieldDecl::Create(*Context, 0, SourceLocation(),
Mike Stump1eb44332009-09-09 15:08:12 +00004618 &Context->Idents.get("FuncPtr"), Context->VoidPtrTy, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00004619 /*BitWidth=*/0, /*Mutable=*/true);
Ted Kremenek8189cde2009-02-07 01:47:29 +00004620 MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
4621 FD->getType());
Mike Stump1eb44332009-09-09 15:08:12 +00004622
John McCall9d125032010-01-15 18:39:57 +00004623 CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
John McCall2de56d12010-08-25 11:45:40 +00004624 CK_Unknown, ME);
Ted Kremenek8189cde2009-02-07 01:47:29 +00004625 PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
Mike Stump1eb44332009-09-09 15:08:12 +00004626
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004627 llvm::SmallVector<Expr*, 8> BlkExprs;
4628 // Add the implicit argument.
4629 BlkExprs.push_back(BlkCast);
4630 // Add the user arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00004631 for (CallExpr::arg_iterator I = Exp->arg_begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004632 E = Exp->arg_end(); I != E; ++I) {
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004633 BlkExprs.push_back(*I);
Steve Naroff54055232008-10-27 17:20:55 +00004634 }
Ted Kremenek668bf912009-02-09 20:51:47 +00004635 CallExpr *CE = new (Context) CallExpr(*Context, PE, &BlkExprs[0],
4636 BlkExprs.size(),
Ted Kremenek8189cde2009-02-07 01:47:29 +00004637 Exp->getType(), SourceLocation());
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004638 return CE;
Steve Naroff54055232008-10-27 17:20:55 +00004639}
4640
Steve Naroff621edce2009-04-29 16:37:50 +00004641// We need to return the rewritten expression to handle cases where the
4642// BlockDeclRefExpr is embedded in another expression being rewritten.
4643// For example:
4644//
4645// int main() {
4646// __block Foo *f;
4647// __block int i;
Mike Stump1eb44332009-09-09 15:08:12 +00004648//
Steve Naroff621edce2009-04-29 16:37:50 +00004649// void (^myblock)() = ^() {
4650// [f test]; // f is a BlockDeclRefExpr embedded in a message (which is being rewritten).
4651// i = 77;
4652// };
4653//}
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004654Stmt *RewriteObjC::RewriteBlockDeclRefExpr(Expr *DeclRefExp) {
Fariborz Jahanianbbf37e22009-12-23 19:26:34 +00004655 // Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004656 // for each DeclRefExp where BYREFVAR is name of the variable.
4657 ValueDecl *VD;
4658 bool isArrow = true;
4659 if (BlockDeclRefExpr *BDRE = dyn_cast<BlockDeclRefExpr>(DeclRefExp))
4660 VD = BDRE->getDecl();
4661 else {
4662 VD = cast<DeclRefExpr>(DeclRefExp)->getDecl();
4663 isArrow = false;
4664 }
4665
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004666 FieldDecl *FD = FieldDecl::Create(*Context, 0, SourceLocation(),
4667 &Context->Idents.get("__forwarding"),
4668 Context->VoidPtrTy, 0,
4669 /*BitWidth=*/0, /*Mutable=*/true);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004670 MemberExpr *ME = new (Context) MemberExpr(DeclRefExp, isArrow,
4671 FD, SourceLocation(),
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004672 FD->getType());
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004673
Daniel Dunbar4087f272010-08-17 22:39:59 +00004674 llvm::StringRef Name = VD->getName();
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004675 FD = FieldDecl::Create(*Context, 0, SourceLocation(),
4676 &Context->Idents.get(Name),
4677 Context->VoidPtrTy, 0,
4678 /*BitWidth=*/0, /*Mutable=*/true);
4679 ME = new (Context) MemberExpr(ME, true, FD, SourceLocation(),
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004680 DeclRefExp->getType());
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004681
4682
4683
Steve Naroffdf8570d2009-02-02 17:19:26 +00004684 // Need parens to enforce precedence.
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004685 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
4686 ME);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004687 ReplaceStmt(DeclRefExp, PE);
Steve Naroff621edce2009-04-29 16:37:50 +00004688 return PE;
Steve Naroff54055232008-10-27 17:20:55 +00004689}
4690
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004691// Rewrites the imported local variable V with external storage
4692// (static, extern, etc.) as *V
4693//
4694Stmt *RewriteObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) {
4695 ValueDecl *VD = DRE->getDecl();
4696 if (VarDecl *Var = dyn_cast<VarDecl>(VD))
4697 if (!ImportedLocalExternalDecls.count(Var))
4698 return DRE;
John McCall2de56d12010-08-25 11:45:40 +00004699 Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref,
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00004700 DRE->getType(), DRE->getLocation());
4701 // Need parens to enforce precedence.
4702 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
4703 Exp);
4704 ReplaceStmt(DRE, PE);
4705 return PE;
4706}
4707
Steve Naroffb2f9e512008-11-03 23:29:32 +00004708void RewriteObjC::RewriteCastExpr(CStyleCastExpr *CE) {
4709 SourceLocation LocStart = CE->getLParenLoc();
4710 SourceLocation LocEnd = CE->getRParenLoc();
Steve Narofffa15fd92008-10-28 20:29:00 +00004711
4712 // Need to avoid trying to rewrite synthesized casts.
4713 if (LocStart.isInvalid())
4714 return;
Steve Naroff8f6ce572008-11-03 11:20:24 +00004715 // Need to avoid trying to rewrite casts contained in macros.
4716 if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
4717 return;
Mike Stump1eb44332009-09-09 15:08:12 +00004718
Steve Naroff54055232008-10-27 17:20:55 +00004719 const char *startBuf = SM->getCharacterData(LocStart);
4720 const char *endBuf = SM->getCharacterData(LocEnd);
Fariborz Jahanian1d4fca22010-01-19 21:48:35 +00004721 QualType QT = CE->getType();
4722 const Type* TypePtr = QT->getAs<Type>();
4723 if (isa<TypeOfExprType>(TypePtr)) {
4724 const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
4725 QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
4726 std::string TypeAsString = "(";
Fariborz Jahanianafad76f2010-02-18 01:20:22 +00004727 RewriteBlockPointerType(TypeAsString, QT);
Fariborz Jahanian1d4fca22010-01-19 21:48:35 +00004728 TypeAsString += ")";
Benjamin Kramerd999b372010-02-14 14:14:16 +00004729 ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString);
Fariborz Jahanian1d4fca22010-01-19 21:48:35 +00004730 return;
4731 }
Steve Naroff54055232008-10-27 17:20:55 +00004732 // advance the location to startArgList.
4733 const char *argPtr = startBuf;
Mike Stump1eb44332009-09-09 15:08:12 +00004734
Steve Naroff54055232008-10-27 17:20:55 +00004735 while (*argPtr++ && (argPtr < endBuf)) {
4736 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004737 case '^':
4738 // Replace the '^' with '*'.
4739 LocStart = LocStart.getFileLocWithOffset(argPtr-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004740 ReplaceText(LocStart, 1, "*");
Mike Stumpb7166332010-01-20 02:03:14 +00004741 break;
Steve Naroff54055232008-10-27 17:20:55 +00004742 }
4743 }
4744 return;
4745}
4746
4747void RewriteObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
4748 SourceLocation DeclLoc = FD->getLocation();
4749 unsigned parenCount = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00004750
Steve Naroff54055232008-10-27 17:20:55 +00004751 // We have 1 or more arguments that have closure pointers.
4752 const char *startBuf = SM->getCharacterData(DeclLoc);
4753 const char *startArgList = strchr(startBuf, '(');
Mike Stump1eb44332009-09-09 15:08:12 +00004754
Steve Naroff54055232008-10-27 17:20:55 +00004755 assert((*startArgList == '(') && "Rewriter fuzzy parser confused");
Mike Stump1eb44332009-09-09 15:08:12 +00004756
Steve Naroff54055232008-10-27 17:20:55 +00004757 parenCount++;
4758 // advance the location to startArgList.
4759 DeclLoc = DeclLoc.getFileLocWithOffset(startArgList-startBuf);
4760 assert((DeclLoc.isValid()) && "Invalid DeclLoc");
Mike Stump1eb44332009-09-09 15:08:12 +00004761
Steve Naroff54055232008-10-27 17:20:55 +00004762 const char *argPtr = startArgList;
Mike Stump1eb44332009-09-09 15:08:12 +00004763
Steve Naroff54055232008-10-27 17:20:55 +00004764 while (*argPtr++ && parenCount) {
4765 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004766 case '^':
4767 // Replace the '^' with '*'.
4768 DeclLoc = DeclLoc.getFileLocWithOffset(argPtr-startArgList);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004769 ReplaceText(DeclLoc, 1, "*");
Mike Stumpb7166332010-01-20 02:03:14 +00004770 break;
4771 case '(':
4772 parenCount++;
4773 break;
4774 case ')':
4775 parenCount--;
4776 break;
Steve Naroff54055232008-10-27 17:20:55 +00004777 }
4778 }
4779 return;
4780}
4781
4782bool RewriteObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
Douglas Gregor72564e72009-02-26 23:50:07 +00004783 const FunctionProtoType *FTP;
Ted Kremenek6217b802009-07-29 21:53:49 +00004784 const PointerType *PT = QT->getAs<PointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004785 if (PT) {
John McCall183700f2009-09-21 23:43:11 +00004786 FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
Steve Naroff54055232008-10-27 17:20:55 +00004787 } else {
Ted Kremenek6217b802009-07-29 21:53:49 +00004788 const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004789 assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
John McCall183700f2009-09-21 23:43:11 +00004790 FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
Steve Naroff54055232008-10-27 17:20:55 +00004791 }
4792 if (FTP) {
Mike Stump1eb44332009-09-09 15:08:12 +00004793 for (FunctionProtoType::arg_type_iterator I = FTP->arg_type_begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004794 E = FTP->arg_type_end(); I != E; ++I)
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004795 if (isTopLevelBlockPointerType(*I))
Steve Naroff54055232008-10-27 17:20:55 +00004796 return true;
4797 }
4798 return false;
4799}
4800
Ted Kremenek8189cde2009-02-07 01:47:29 +00004801void RewriteObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
4802 const char *&RParen) {
Steve Naroff54055232008-10-27 17:20:55 +00004803 const char *argPtr = strchr(Name, '(');
4804 assert((*argPtr == '(') && "Rewriter fuzzy parser confused");
Mike Stump1eb44332009-09-09 15:08:12 +00004805
Steve Naroff54055232008-10-27 17:20:55 +00004806 LParen = argPtr; // output the start.
4807 argPtr++; // skip past the left paren.
4808 unsigned parenCount = 1;
Mike Stump1eb44332009-09-09 15:08:12 +00004809
Steve Naroff54055232008-10-27 17:20:55 +00004810 while (*argPtr && parenCount) {
4811 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004812 case '(': parenCount++; break;
4813 case ')': parenCount--; break;
4814 default: break;
Steve Naroff54055232008-10-27 17:20:55 +00004815 }
4816 if (parenCount) argPtr++;
4817 }
4818 assert((*argPtr == ')') && "Rewriter fuzzy parser confused");
4819 RParen = argPtr; // output the end
4820}
4821
4822void RewriteObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
4823 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
4824 RewriteBlockPointerFunctionArgs(FD);
4825 return;
Mike Stump1eb44332009-09-09 15:08:12 +00004826 }
Steve Naroff54055232008-10-27 17:20:55 +00004827 // Handle Variables and Typedefs.
4828 SourceLocation DeclLoc = ND->getLocation();
4829 QualType DeclT;
4830 if (VarDecl *VD = dyn_cast<VarDecl>(ND))
4831 DeclT = VD->getType();
4832 else if (TypedefDecl *TDD = dyn_cast<TypedefDecl>(ND))
4833 DeclT = TDD->getUnderlyingType();
4834 else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
4835 DeclT = FD->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00004836 else
Steve Naroff54055232008-10-27 17:20:55 +00004837 assert(0 && "RewriteBlockPointerDecl(): Decl type not yet handled");
Mike Stump1eb44332009-09-09 15:08:12 +00004838
Steve Naroff54055232008-10-27 17:20:55 +00004839 const char *startBuf = SM->getCharacterData(DeclLoc);
4840 const char *endBuf = startBuf;
4841 // scan backward (from the decl location) for the end of the previous decl.
4842 while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
4843 startBuf--;
Mike Stump1eb44332009-09-09 15:08:12 +00004844
Steve Naroff54055232008-10-27 17:20:55 +00004845 // *startBuf != '^' if we are dealing with a pointer to function that
4846 // may take block argument types (which will be handled below).
4847 if (*startBuf == '^') {
4848 // Replace the '^' with '*', computing a negative offset.
4849 DeclLoc = DeclLoc.getFileLocWithOffset(startBuf-endBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004850 ReplaceText(DeclLoc, 1, "*");
Steve Naroff54055232008-10-27 17:20:55 +00004851 }
4852 if (PointerTypeTakesAnyBlockArguments(DeclT)) {
4853 // Replace the '^' with '*' for arguments.
4854 DeclLoc = ND->getLocation();
4855 startBuf = SM->getCharacterData(DeclLoc);
4856 const char *argListBegin, *argListEnd;
4857 GetExtentOfArgList(startBuf, argListBegin, argListEnd);
4858 while (argListBegin < argListEnd) {
4859 if (*argListBegin == '^') {
4860 SourceLocation CaretLoc = DeclLoc.getFileLocWithOffset(argListBegin-startBuf);
Benjamin Kramerd999b372010-02-14 14:14:16 +00004861 ReplaceText(CaretLoc, 1, "*");
Steve Naroff54055232008-10-27 17:20:55 +00004862 }
4863 argListBegin++;
4864 }
4865 }
4866 return;
4867}
4868
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004869
4870/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
4871/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
4872/// struct Block_byref_id_object *src) {
4873/// _Block_object_assign (&_dest->object, _src->object,
4874/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4875/// [|BLOCK_FIELD_IS_WEAK]) // object
4876/// _Block_object_assign(&_dest->object, _src->object,
4877/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4878/// [|BLOCK_FIELD_IS_WEAK]) // block
4879/// }
4880/// And:
4881/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
4882/// _Block_object_dispose(_src->object,
4883/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4884/// [|BLOCK_FIELD_IS_WEAK]) // object
4885/// _Block_object_dispose(_src->object,
4886/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4887/// [|BLOCK_FIELD_IS_WEAK]) // block
4888/// }
4889
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004890std::string RewriteObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
4891 int flag) {
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004892 std::string S;
Benjamin Kramer1211a712010-01-10 19:57:50 +00004893 if (CopyDestroyCache.count(flag))
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004894 return S;
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004895 CopyDestroyCache.insert(flag);
4896 S = "static void __Block_byref_id_object_copy_";
4897 S += utostr(flag);
4898 S += "(void *dst, void *src) {\n";
4899
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004900 // offset into the object pointer is computed as:
4901 // void * + void* + int + int + void* + void *
4902 unsigned IntSize =
4903 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
4904 unsigned VoidPtrSize =
4905 static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));
4906
4907 unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/8;
4908 S += " _Block_object_assign((char*)dst + ";
4909 S += utostr(offset);
4910 S += ", *(void * *) ((char*)src + ";
4911 S += utostr(offset);
4912 S += "), ";
4913 S += utostr(flag);
4914 S += ");\n}\n";
4915
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004916 S += "static void __Block_byref_id_object_dispose_";
4917 S += utostr(flag);
4918 S += "(void *src) {\n";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004919 S += " _Block_object_dispose(*(void * *) ((char*)src + ";
4920 S += utostr(offset);
4921 S += "), ";
4922 S += utostr(flag);
4923 S += ");\n}\n";
4924 return S;
4925}
4926
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004927/// RewriteByRefVar - For each __block typex ND variable this routine transforms
4928/// the declaration into:
4929/// struct __Block_byref_ND {
4930/// void *__isa; // NULL for everything except __weak pointers
4931/// struct __Block_byref_ND *__forwarding;
4932/// int32_t __flags;
4933/// int32_t __size;
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004934/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
4935/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004936/// typex ND;
4937/// };
4938///
4939/// It then replaces declaration of ND variable with:
4940/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
4941/// __size=sizeof(struct __Block_byref_ND),
4942/// ND=initializer-if-any};
4943///
4944///
4945void RewriteObjC::RewriteByRefVar(VarDecl *ND) {
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004946 // Insert declaration for the function in which block literal is
4947 // used.
4948 if (CurFunctionDeclToDeclareForBlock)
4949 RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004950 int flag = 0;
4951 int isa = 0;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004952 SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
Fariborz Jahaniand64a4f42010-02-26 22:49:11 +00004953 if (DeclLoc.isInvalid())
4954 // If type location is missing, it is because of missing type (a warning).
4955 // Use variable's location which is good for this case.
4956 DeclLoc = ND->getLocation();
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004957 const char *startBuf = SM->getCharacterData(DeclLoc);
Fariborz Jahanian6f0a0a92009-12-30 20:38:08 +00004958 SourceLocation X = ND->getLocEnd();
4959 X = SM->getInstantiationLoc(X);
4960 const char *endBuf = SM->getCharacterData(X);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004961 std::string Name(ND->getNameAsString());
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004962 std::string ByrefType;
4963 RewriteByRefString(ByrefType, Name, ND);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004964 ByrefType += " {\n";
4965 ByrefType += " void *__isa;\n";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004966 RewriteByRefString(ByrefType, Name, ND);
4967 ByrefType += " *__forwarding;\n";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004968 ByrefType += " int __flags;\n";
4969 ByrefType += " int __size;\n";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004970 // Add void *__Block_byref_id_object_copy;
4971 // void *__Block_byref_id_object_dispose; if needed.
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004972 QualType Ty = ND->getType();
4973 bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty);
4974 if (HasCopyAndDispose) {
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004975 ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
4976 ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004977 }
4978
4979 Ty.getAsStringInternal(Name, Context->PrintingPolicy);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004980 ByrefType += " " + Name + ";\n";
4981 ByrefType += "};\n";
4982 // Insert this type in global scope. It is needed by helper function.
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004983 SourceLocation FunLocStart;
4984 if (CurFunctionDef)
4985 FunLocStart = CurFunctionDef->getTypeSpecStartLoc();
4986 else {
4987 assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null");
4988 FunLocStart = CurMethodDef->getLocStart();
4989 }
Benjamin Kramerd999b372010-02-14 14:14:16 +00004990 InsertText(FunLocStart, ByrefType);
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004991 if (Ty.isObjCGCWeak()) {
4992 flag |= BLOCK_FIELD_IS_WEAK;
4993 isa = 1;
4994 }
4995
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004996 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004997 flag = BLOCK_BYREF_CALLER;
4998 QualType Ty = ND->getType();
4999 // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
5000 if (Ty->isBlockPointerType())
5001 flag |= BLOCK_FIELD_IS_BLOCK;
5002 else
5003 flag |= BLOCK_FIELD_IS_OBJECT;
5004 std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005005 if (!HF.empty())
Benjamin Kramerd999b372010-02-14 14:14:16 +00005006 InsertText(FunLocStart, HF);
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005007 }
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005008
5009 // struct __Block_byref_ND ND =
5010 // {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
5011 // initializer-if-any};
5012 bool hasInit = (ND->getInit() != 0);
Fariborz Jahaniane1f84f82010-01-05 18:15:57 +00005013 unsigned flags = 0;
5014 if (HasCopyAndDispose)
5015 flags |= BLOCK_HAS_COPY_DISPOSE;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005016 Name = ND->getNameAsString();
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005017 ByrefType.clear();
5018 RewriteByRefString(ByrefType, Name, ND);
Fariborz Jahanian2663f522010-02-04 00:07:58 +00005019 std::string ForwardingCastType("(");
5020 ForwardingCastType += ByrefType + " *)";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005021 if (!hasInit) {
Fariborz Jahanian2086d542010-01-05 19:21:35 +00005022 ByrefType += " " + Name + " = {(void*)";
5023 ByrefType += utostr(isa);
Fariborz Jahanian2663f522010-02-04 00:07:58 +00005024 ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00005025 ByrefType += utostr(flags);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00005026 ByrefType += ", ";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005027 ByrefType += "sizeof(";
5028 RewriteByRefString(ByrefType, Name, ND);
5029 ByrefType += ")";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005030 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00005031 ByrefType += ", __Block_byref_id_object_copy_";
5032 ByrefType += utostr(flag);
5033 ByrefType += ", __Block_byref_id_object_dispose_";
5034 ByrefType += utostr(flag);
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005035 }
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005036 ByrefType += "};\n";
Benjamin Kramerd999b372010-02-14 14:14:16 +00005037 ReplaceText(DeclLoc, endBuf-startBuf+Name.size(), ByrefType);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005038 }
5039 else {
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00005040 SourceLocation startLoc;
5041 Expr *E = ND->getInit();
5042 if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
5043 startLoc = ECE->getLParenLoc();
5044 else
5045 startLoc = E->getLocStart();
Fariborz Jahanian791b10d2010-01-05 23:06:29 +00005046 startLoc = SM->getInstantiationLoc(startLoc);
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00005047 endBuf = SM->getCharacterData(startLoc);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005048 ByrefType += " " + Name;
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00005049 ByrefType += " = {(void*)";
Fariborz Jahanian2086d542010-01-05 19:21:35 +00005050 ByrefType += utostr(isa);
Fariborz Jahanian2663f522010-02-04 00:07:58 +00005051 ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00005052 ByrefType += utostr(flags);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00005053 ByrefType += ", ";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005054 ByrefType += "sizeof(";
5055 RewriteByRefString(ByrefType, Name, ND);
5056 ByrefType += "), ";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005057 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00005058 ByrefType += "__Block_byref_id_object_copy_";
5059 ByrefType += utostr(flag);
5060 ByrefType += ", __Block_byref_id_object_dispose_";
5061 ByrefType += utostr(flag);
5062 ByrefType += ", ";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00005063 }
Benjamin Kramerd999b372010-02-14 14:14:16 +00005064 ReplaceText(DeclLoc, endBuf-startBuf, ByrefType);
Steve Naroffc5143c52009-12-23 17:24:33 +00005065
5066 // Complete the newly synthesized compound expression by inserting a right
5067 // curly brace before the end of the declaration.
5068 // FIXME: This approach avoids rewriting the initializer expression. It
5069 // also assumes there is only one declarator. For example, the following
5070 // isn't currently supported by this routine (in general):
5071 //
5072 // double __block BYREFVAR = 1.34, BYREFVAR2 = 1.37;
5073 //
Fariborz Jahanian5f371ee2010-07-21 17:36:39 +00005074 const char *startInitializerBuf = SM->getCharacterData(startLoc);
5075 const char *semiBuf = strchr(startInitializerBuf, ';');
Steve Naroffc5143c52009-12-23 17:24:33 +00005076 assert((*semiBuf == ';') && "RewriteByRefVar: can't find ';'");
5077 SourceLocation semiLoc =
Fariborz Jahanian5f371ee2010-07-21 17:36:39 +00005078 startLoc.getFileLocWithOffset(semiBuf-startInitializerBuf);
Steve Naroffc5143c52009-12-23 17:24:33 +00005079
Benjamin Kramerd999b372010-02-14 14:14:16 +00005080 InsertText(semiLoc, "}");
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005081 }
Fariborz Jahanian1be6b462009-12-22 00:48:54 +00005082 return;
5083}
5084
Mike Stump1eb44332009-09-09 15:08:12 +00005085void RewriteObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
Steve Naroff54055232008-10-27 17:20:55 +00005086 // Add initializers for any closure decl refs.
5087 GetBlockDeclRefExprs(Exp->getBody());
5088 if (BlockDeclRefs.size()) {
5089 // Unique all "by copy" declarations.
5090 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005091 if (!BlockDeclRefs[i]->isByRef()) {
5092 if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
5093 BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
5094 BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl());
5095 }
5096 }
Steve Naroff54055232008-10-27 17:20:55 +00005097 // Unique all "by ref" declarations.
5098 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
5099 if (BlockDeclRefs[i]->isByRef()) {
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005100 if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
5101 BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
5102 BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl());
5103 }
Steve Naroff54055232008-10-27 17:20:55 +00005104 }
5105 // Find any imported blocks...they will need special attention.
5106 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
Fariborz Jahanian4fcc4fd2009-12-21 23:31:42 +00005107 if (BlockDeclRefs[i]->isByRef() ||
5108 BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
Fariborz Jahanian5b011b02010-02-26 21:46:27 +00005109 BlockDeclRefs[i]->getType()->isBlockPointerType())
Steve Naroff54055232008-10-27 17:20:55 +00005110 ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
Steve Naroff54055232008-10-27 17:20:55 +00005111 }
5112}
5113
Daniel Dunbar4087f272010-08-17 22:39:59 +00005114FunctionDecl *RewriteObjC::SynthBlockInitFunctionDecl(llvm::StringRef name) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005115 IdentifierInfo *ID = &Context->Idents.get(name);
Douglas Gregor72564e72009-02-26 23:50:07 +00005116 QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
Mike Stump1eb44332009-09-09 15:08:12 +00005117 return FunctionDecl::Create(*Context, TUDecl,SourceLocation(),
John McCalld931b082010-08-26 03:08:43 +00005118 ID, FType, 0, SC_Extern,
5119 SC_None, false, false);
Steve Narofffa15fd92008-10-28 20:29:00 +00005120}
5121
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005122Stmt *RewriteObjC::SynthBlockInitExpr(BlockExpr *Exp,
5123 const llvm::SmallVector<BlockDeclRefExpr *, 8> &InnerBlockDeclRefs) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005124 Blocks.push_back(Exp);
5125
5126 CollectBlockDeclRefInfo(Exp);
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005127
5128 // Add inner imported variables now used in current block.
5129 int countOfInnerDecls = 0;
Fariborz Jahanian1276bfe2010-02-26 22:36:30 +00005130 if (!InnerBlockDeclRefs.empty()) {
5131 for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) {
5132 BlockDeclRefExpr *Exp = InnerBlockDeclRefs[i];
5133 ValueDecl *VD = Exp->getDecl();
5134 if (!Exp->isByRef() && !BlockByCopyDeclsPtrSet.count(VD)) {
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005135 // We need to save the copied-in variables in nested
5136 // blocks because it is needed at the end for some of the API generations.
5137 // See SynthesizeBlockLiterals routine.
Fariborz Jahanian1276bfe2010-02-26 22:36:30 +00005138 InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
5139 BlockDeclRefs.push_back(Exp);
5140 BlockByCopyDeclsPtrSet.insert(VD);
5141 BlockByCopyDecls.push_back(VD);
5142 }
5143 if (Exp->isByRef() && !BlockByRefDeclsPtrSet.count(VD)) {
5144 InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
5145 BlockDeclRefs.push_back(Exp);
5146 BlockByRefDeclsPtrSet.insert(VD);
5147 BlockByRefDecls.push_back(VD);
5148 }
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005149 }
Fariborz Jahanian1276bfe2010-02-26 22:36:30 +00005150 // Find any imported blocks...they will need special attention.
5151 for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++)
5152 if (InnerBlockDeclRefs[i]->isByRef() ||
5153 InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
5154 InnerBlockDeclRefs[i]->getType()->isBlockPointerType())
5155 ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl());
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005156 }
5157 InnerDeclRefsCount.push_back(countOfInnerDecls);
5158
Steve Narofffa15fd92008-10-28 20:29:00 +00005159 std::string FuncName;
Mike Stump1eb44332009-09-09 15:08:12 +00005160
Steve Narofffa15fd92008-10-28 20:29:00 +00005161 if (CurFunctionDef)
Chris Lattner077bf5e2008-11-24 03:33:13 +00005162 FuncName = CurFunctionDef->getNameAsString();
Fariborz Jahaniane61a1d42010-02-10 20:18:25 +00005163 else if (CurMethodDef)
5164 BuildUniqueMethodName(FuncName, CurMethodDef);
5165 else if (GlobalVarDecl)
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00005166 FuncName = std::string(GlobalVarDecl->getNameAsString());
Mike Stump1eb44332009-09-09 15:08:12 +00005167
Steve Narofffa15fd92008-10-28 20:29:00 +00005168 std::string BlockNumber = utostr(Blocks.size()-1);
Mike Stump1eb44332009-09-09 15:08:12 +00005169
Steve Narofffa15fd92008-10-28 20:29:00 +00005170 std::string Tag = "__" + FuncName + "_block_impl_" + BlockNumber;
5171 std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
Mike Stump1eb44332009-09-09 15:08:12 +00005172
Steve Narofffa15fd92008-10-28 20:29:00 +00005173 // Get a pointer to the function type so we can cast appropriately.
Fariborz Jahanian1f906222010-05-25 15:56:08 +00005174 QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType());
5175 QualType FType = Context->getPointerType(BFT);
Steve Narofffa15fd92008-10-28 20:29:00 +00005176
5177 FunctionDecl *FD;
5178 Expr *NewRep;
Mike Stump1eb44332009-09-09 15:08:12 +00005179
Steve Narofffa15fd92008-10-28 20:29:00 +00005180 // Simulate a contructor call...
Daniel Dunbar4087f272010-08-17 22:39:59 +00005181 FD = SynthBlockInitFunctionDecl(Tag);
Ted Kremenek8189cde2009-02-07 01:47:29 +00005182 DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, FType, SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00005183
Steve Narofffa15fd92008-10-28 20:29:00 +00005184 llvm::SmallVector<Expr*, 4> InitExprs;
Mike Stump1eb44332009-09-09 15:08:12 +00005185
Steve Narofffdc03722008-10-29 21:23:59 +00005186 // Initialize the block function.
Daniel Dunbar4087f272010-08-17 22:39:59 +00005187 FD = SynthBlockInitFunctionDecl(Func);
Ted Kremenek8189cde2009-02-07 01:47:29 +00005188 DeclRefExpr *Arg = new (Context) DeclRefExpr(FD, FD->getType(),
5189 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00005190 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
John McCall2de56d12010-08-25 11:45:40 +00005191 CK_Unknown, Arg);
Mike Stump1eb44332009-09-09 15:08:12 +00005192 InitExprs.push_back(castExpr);
5193
Steve Naroff01aec112009-12-06 21:14:13 +00005194 // Initialize the block descriptor.
5195 std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";
Mike Stump1eb44332009-09-09 15:08:12 +00005196
Steve Naroff01aec112009-12-06 21:14:13 +00005197 VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
5198 &Context->Idents.get(DescData.c_str()),
5199 Context->VoidPtrTy, 0,
John McCalld931b082010-08-26 03:08:43 +00005200 SC_Static, SC_None);
Steve Naroff01aec112009-12-06 21:14:13 +00005201 UnaryOperator *DescRefExpr = new (Context) UnaryOperator(
5202 new (Context) DeclRefExpr(NewVD,
5203 Context->VoidPtrTy, SourceLocation()),
John McCall2de56d12010-08-25 11:45:40 +00005204 UO_AddrOf,
Steve Naroff01aec112009-12-06 21:14:13 +00005205 Context->getPointerType(Context->VoidPtrTy),
5206 SourceLocation());
5207 InitExprs.push_back(DescRefExpr);
5208
Steve Narofffa15fd92008-10-28 20:29:00 +00005209 // Add initializers for any closure decl refs.
5210 if (BlockDeclRefs.size()) {
Steve Narofffdc03722008-10-29 21:23:59 +00005211 Expr *Exp;
Steve Narofffa15fd92008-10-28 20:29:00 +00005212 // Output all "by copy" declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005213 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Narofffa15fd92008-10-28 20:29:00 +00005214 E = BlockByCopyDecls.end(); I != E; ++I) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005215 if (isObjCType((*I)->getType())) {
Steve Narofffdc03722008-10-29 21:23:59 +00005216 // FIXME: Conform to ABI ([[obj retain] autorelease]).
Daniel Dunbar4087f272010-08-17 22:39:59 +00005217 FD = SynthBlockInitFunctionDecl((*I)->getName());
Ted Kremenek8189cde2009-02-07 01:47:29 +00005218 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
Fariborz Jahaniana5a79872010-05-24 18:32:56 +00005219 if (HasLocalVariableExternalStorage(*I)) {
5220 QualType QT = (*I)->getType();
5221 QT = Context->getPointerType(QT);
John McCall2de56d12010-08-25 11:45:40 +00005222 Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT,
Fariborz Jahaniana5a79872010-05-24 18:32:56 +00005223 SourceLocation());
5224 }
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005225 } else if (isTopLevelBlockPointerType((*I)->getType())) {
Daniel Dunbar4087f272010-08-17 22:39:59 +00005226 FD = SynthBlockInitFunctionDecl((*I)->getName());
Ted Kremenek8189cde2009-02-07 01:47:29 +00005227 Arg = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00005228 Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
John McCall2de56d12010-08-25 11:45:40 +00005229 CK_Unknown, Arg);
Steve Narofffa15fd92008-10-28 20:29:00 +00005230 } else {
Daniel Dunbar4087f272010-08-17 22:39:59 +00005231 FD = SynthBlockInitFunctionDecl((*I)->getName());
Ted Kremenek8189cde2009-02-07 01:47:29 +00005232 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00005233 if (HasLocalVariableExternalStorage(*I)) {
5234 QualType QT = (*I)->getType();
5235 QT = Context->getPointerType(QT);
John McCall2de56d12010-08-25 11:45:40 +00005236 Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT,
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00005237 SourceLocation());
5238 }
5239
Steve Narofffa15fd92008-10-28 20:29:00 +00005240 }
Mike Stump1eb44332009-09-09 15:08:12 +00005241 InitExprs.push_back(Exp);
Steve Narofffa15fd92008-10-28 20:29:00 +00005242 }
5243 // Output all "by ref" declarations.
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005244 for (llvm::SmallVector<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Narofffa15fd92008-10-28 20:29:00 +00005245 E = BlockByRefDecls.end(); I != E; ++I) {
Fariborz Jahanian2663f522010-02-04 00:07:58 +00005246 ValueDecl *ND = (*I);
5247 std::string Name(ND->getNameAsString());
5248 std::string RecName;
5249 RewriteByRefString(RecName, Name, ND);
5250 IdentifierInfo *II = &Context->Idents.get(RecName.c_str()
5251 + sizeof("struct"));
Abramo Bagnara465d41b2010-05-11 21:36:43 +00005252 RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
Fariborz Jahanian2663f522010-02-04 00:07:58 +00005253 SourceLocation(), II);
5254 assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl");
5255 QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
5256
Daniel Dunbar4087f272010-08-17 22:39:59 +00005257 FD = SynthBlockInitFunctionDecl((*I)->getName());
Ted Kremenek8189cde2009-02-07 01:47:29 +00005258 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00005259 Exp = new (Context) UnaryOperator(Exp, UO_AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00005260 Context->getPointerType(Exp->getType()),
Steve Narofffdc03722008-10-29 21:23:59 +00005261 SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00005262 Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_Unknown, Exp);
Mike Stump1eb44332009-09-09 15:08:12 +00005263 InitExprs.push_back(Exp);
Steve Narofffa15fd92008-10-28 20:29:00 +00005264 }
5265 }
Fariborz Jahanianff127882009-12-23 21:52:32 +00005266 if (ImportedBlockDecls.size()) {
5267 // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
5268 int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
Steve Naroff01aec112009-12-06 21:14:13 +00005269 unsigned IntSize =
5270 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
Fariborz Jahanianff127882009-12-23 21:52:32 +00005271 Expr *FlagExp = new (Context) IntegerLiteral(llvm::APInt(IntSize, flag),
5272 Context->IntTy, SourceLocation());
5273 InitExprs.push_back(FlagExp);
Steve Naroff01aec112009-12-06 21:14:13 +00005274 }
Ted Kremenek668bf912009-02-09 20:51:47 +00005275 NewRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0], InitExprs.size(),
5276 FType, SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00005277 NewRep = new (Context) UnaryOperator(NewRep, UO_AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00005278 Context->getPointerType(NewRep->getType()),
Steve Narofffa15fd92008-10-28 20:29:00 +00005279 SourceLocation());
John McCall2de56d12010-08-25 11:45:40 +00005280 NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_Unknown,
John McCall9d125032010-01-15 18:39:57 +00005281 NewRep);
Steve Narofffa15fd92008-10-28 20:29:00 +00005282 BlockDeclRefs.clear();
5283 BlockByRefDecls.clear();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005284 BlockByRefDeclsPtrSet.clear();
Steve Narofffa15fd92008-10-28 20:29:00 +00005285 BlockByCopyDecls.clear();
Fariborz Jahanianbab71682010-02-11 23:35:57 +00005286 BlockByCopyDeclsPtrSet.clear();
Steve Narofffa15fd92008-10-28 20:29:00 +00005287 ImportedBlockDecls.clear();
5288 return NewRep;
5289}
5290
5291//===----------------------------------------------------------------------===//
5292// Function Body / Expression rewriting
5293//===----------------------------------------------------------------------===//
5294
Steve Naroffc77a6362008-12-04 16:24:46 +00005295// This is run as a first "pass" prior to RewriteFunctionBodyOrGlobalInitializer().
5296// The allows the main rewrite loop to associate all ObjCPropertyRefExprs with
5297// their respective BinaryOperator. Without this knowledge, we'd need to rewrite
5298// the ObjCPropertyRefExpr twice (once as a getter, and later as a setter).
5299// Since the rewriter isn't capable of rewriting rewritten code, it's important
5300// we get this right.
5301void RewriteObjC::CollectPropertySetters(Stmt *S) {
5302 // Perform a bottom up traversal of all children.
5303 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
5304 CI != E; ++CI)
5305 if (*CI)
5306 CollectPropertySetters(*CI);
5307
5308 if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(S)) {
5309 if (BinOp->isAssignmentOp()) {
5310 if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS()))
5311 PropSetters[PRE] = BinOp;
5312 }
5313 }
5314}
5315
Steve Narofffa15fd92008-10-28 20:29:00 +00005316Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
Mike Stump1eb44332009-09-09 15:08:12 +00005317 if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
Steve Narofffa15fd92008-10-28 20:29:00 +00005318 isa<DoStmt>(S) || isa<ForStmt>(S))
5319 Stmts.push_back(S);
5320 else if (isa<ObjCForCollectionStmt>(S)) {
5321 Stmts.push_back(S);
Chris Lattner4824fcd2010-01-09 21:45:57 +00005322 ObjCBcLabelNo.push_back(++BcLabelCount);
Steve Narofffa15fd92008-10-28 20:29:00 +00005323 }
Mike Stump1eb44332009-09-09 15:08:12 +00005324
Steve Narofffa15fd92008-10-28 20:29:00 +00005325 SourceRange OrigStmtRange = S->getSourceRange();
Mike Stump1eb44332009-09-09 15:08:12 +00005326
Steve Narofffa15fd92008-10-28 20:29:00 +00005327 // Perform a bottom up rewrite of all children.
5328 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
5329 CI != E; ++CI)
5330 if (*CI) {
Fariborz Jahanian2b9b0b22010-02-05 01:35:00 +00005331 Stmt *newStmt;
5332 Stmt *S = (*CI);
5333 if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
5334 Expr *OldBase = IvarRefExpr->getBase();
5335 bool replaced = false;
5336 newStmt = RewriteObjCNestedIvarRefExpr(S, replaced);
5337 if (replaced) {
5338 if (ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(newStmt))
5339 ReplaceStmt(OldBase, IRE->getBase());
5340 else
5341 ReplaceStmt(S, newStmt);
5342 }
5343 }
5344 else
5345 newStmt = RewriteFunctionBodyOrGlobalInitializer(S);
Mike Stump1eb44332009-09-09 15:08:12 +00005346 if (newStmt)
Steve Narofffa15fd92008-10-28 20:29:00 +00005347 *CI = newStmt;
5348 }
Mike Stump1eb44332009-09-09 15:08:12 +00005349
Steve Narofffa15fd92008-10-28 20:29:00 +00005350 if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005351 llvm::SmallVector<BlockDeclRefExpr *, 8> InnerBlockDeclRefs;
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00005352 llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts;
5353 InnerContexts.insert(BE->getBlockDecl());
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00005354 ImportedLocalExternalDecls.clear();
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005355 GetInnerBlockDeclRefExprs(BE->getBody(),
Fariborz Jahanian72952fc2010-03-01 23:36:21 +00005356 InnerBlockDeclRefs, InnerContexts);
Steve Narofffa15fd92008-10-28 20:29:00 +00005357 // Rewrite the block body in place.
5358 RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00005359 ImportedLocalExternalDecls.clear();
Steve Narofffa15fd92008-10-28 20:29:00 +00005360 // Now we snarf the rewritten text and stash it away for later use.
Ted Kremenek6a12a142010-01-07 18:00:35 +00005361 std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005362 RewrittenBlockExprs[BE] = Str;
Mike Stump1eb44332009-09-09 15:08:12 +00005363
Fariborz Jahanian5e49b2f2010-02-24 22:48:18 +00005364 Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);
5365
Steve Narofffa15fd92008-10-28 20:29:00 +00005366 //blockTranscribed->dump();
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005367 ReplaceStmt(S, blockTranscribed);
Steve Narofffa15fd92008-10-28 20:29:00 +00005368 return blockTranscribed;
5369 }
5370 // Handle specific things.
5371 if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
5372 return RewriteAtEncode(AtEncode);
Mike Stump1eb44332009-09-09 15:08:12 +00005373
Steve Naroffc77a6362008-12-04 16:24:46 +00005374 if (ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(S)) {
5375 BinaryOperator *BinOp = PropSetters[PropRefExpr];
5376 if (BinOp) {
5377 // Because the rewriter doesn't allow us to rewrite rewritten code,
5378 // we need to rewrite the right hand side prior to rewriting the setter.
Steve Naroffb619d952008-12-09 12:56:34 +00005379 DisableReplaceStmt = true;
5380 // Save the source range. Even if we disable the replacement, the
5381 // rewritten node will have been inserted into the tree. If the synthesized
5382 // node is at the 'end', the rewriter will fail. Consider this:
Mike Stump1eb44332009-09-09 15:08:12 +00005383 // self.errorHandler = handler ? handler :
Steve Naroffb619d952008-12-09 12:56:34 +00005384 // ^(NSURL *errorURL, NSError *error) { return (BOOL)1; };
5385 SourceRange SrcRange = BinOp->getSourceRange();
Steve Naroffc77a6362008-12-04 16:24:46 +00005386 Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(BinOp->getRHS());
Steve Naroffb619d952008-12-09 12:56:34 +00005387 DisableReplaceStmt = false;
Steve Naroff4c3580e2008-12-04 23:50:32 +00005388 //
5389 // Unlike the main iterator, we explicily avoid changing 'BinOp'. If
5390 // we changed the RHS of BinOp, the rewriter would fail (since it needs
5391 // to see the original expression). Consider this example:
5392 //
5393 // Foo *obj1, *obj2;
5394 //
5395 // obj1.i = [obj2 rrrr];
5396 //
5397 // 'BinOp' for the previous expression looks like:
5398 //
5399 // (BinaryOperator 0x231ccf0 'int' '='
5400 // (ObjCPropertyRefExpr 0x231cc70 'int' Kind=PropertyRef Property="i"
5401 // (DeclRefExpr 0x231cc50 'Foo *' Var='obj1' 0x231cbb0))
5402 // (ObjCMessageExpr 0x231ccb0 'int' selector=rrrr
5403 // (DeclRefExpr 0x231cc90 'Foo *' Var='obj2' 0x231cbe0)))
5404 //
5405 // 'newStmt' represents the rewritten message expression. For example:
5406 //
5407 // (CallExpr 0x231d300 'id':'struct objc_object *'
5408 // (ParenExpr 0x231d2e0 'int (*)(id, SEL)'
5409 // (CStyleCastExpr 0x231d2c0 'int (*)(id, SEL)'
5410 // (CStyleCastExpr 0x231d220 'void *'
5411 // (DeclRefExpr 0x231d200 'id (id, SEL, ...)' FunctionDecl='objc_msgSend' 0x231cdc0))))
5412 //
5413 // Note that 'newStmt' is passed to RewritePropertySetter so that it
5414 // can be used as the setter argument. ReplaceStmt() will still 'see'
5415 // the original RHS (since we haven't altered BinOp).
5416 //
Mike Stump1eb44332009-09-09 15:08:12 +00005417 // This implies the Rewrite* routines can no longer delete the original
Steve Naroff4c3580e2008-12-04 23:50:32 +00005418 // node. As a result, we now leak the original AST nodes.
5419 //
Steve Naroffb619d952008-12-09 12:56:34 +00005420 return RewritePropertySetter(BinOp, dyn_cast<Expr>(newStmt), SrcRange);
Steve Naroffc77a6362008-12-04 16:24:46 +00005421 } else {
5422 return RewritePropertyGetter(PropRefExpr);
Steve Naroff15f081d2008-12-03 00:56:33 +00005423 }
5424 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005425 if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
5426 return RewriteAtSelector(AtSelector);
Mike Stump1eb44332009-09-09 15:08:12 +00005427
Steve Narofffa15fd92008-10-28 20:29:00 +00005428 if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
5429 return RewriteObjCStringLiteral(AtString);
Mike Stump1eb44332009-09-09 15:08:12 +00005430
Steve Narofffa15fd92008-10-28 20:29:00 +00005431 if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
Steve Naroffc77a6362008-12-04 16:24:46 +00005432#if 0
Steve Narofffa15fd92008-10-28 20:29:00 +00005433 // Before we rewrite it, put the original message expression in a comment.
5434 SourceLocation startLoc = MessExpr->getLocStart();
5435 SourceLocation endLoc = MessExpr->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00005436
Steve Narofffa15fd92008-10-28 20:29:00 +00005437 const char *startBuf = SM->getCharacterData(startLoc);
5438 const char *endBuf = SM->getCharacterData(endLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00005439
Steve Narofffa15fd92008-10-28 20:29:00 +00005440 std::string messString;
5441 messString += "// ";
5442 messString.append(startBuf, endBuf-startBuf+1);
5443 messString += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00005444
5445 // FIXME: Missing definition of
Steve Narofffa15fd92008-10-28 20:29:00 +00005446 // InsertText(clang::SourceLocation, char const*, unsigned int).
5447 // InsertText(startLoc, messString.c_str(), messString.size());
5448 // Tried this, but it didn't work either...
5449 // ReplaceText(startLoc, 0, messString.c_str(), messString.size());
Steve Naroffc77a6362008-12-04 16:24:46 +00005450#endif
Steve Narofffa15fd92008-10-28 20:29:00 +00005451 return RewriteMessageExpr(MessExpr);
5452 }
Mike Stump1eb44332009-09-09 15:08:12 +00005453
Steve Narofffa15fd92008-10-28 20:29:00 +00005454 if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
5455 return RewriteObjCTryStmt(StmtTry);
5456
5457 if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
5458 return RewriteObjCSynchronizedStmt(StmtTry);
5459
5460 if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
5461 return RewriteObjCThrowStmt(StmtThrow);
Mike Stump1eb44332009-09-09 15:08:12 +00005462
Steve Narofffa15fd92008-10-28 20:29:00 +00005463 if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
5464 return RewriteObjCProtocolExpr(ProtocolExp);
Mike Stump1eb44332009-09-09 15:08:12 +00005465
5466 if (ObjCForCollectionStmt *StmtForCollection =
Steve Narofffa15fd92008-10-28 20:29:00 +00005467 dyn_cast<ObjCForCollectionStmt>(S))
Mike Stump1eb44332009-09-09 15:08:12 +00005468 return RewriteObjCForCollectionStmt(StmtForCollection,
Steve Narofffa15fd92008-10-28 20:29:00 +00005469 OrigStmtRange.getEnd());
5470 if (BreakStmt *StmtBreakStmt =
5471 dyn_cast<BreakStmt>(S))
5472 return RewriteBreakStmt(StmtBreakStmt);
5473 if (ContinueStmt *StmtContinueStmt =
5474 dyn_cast<ContinueStmt>(S))
5475 return RewriteContinueStmt(StmtContinueStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00005476
5477 // Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
Steve Narofffa15fd92008-10-28 20:29:00 +00005478 // and cast exprs.
5479 if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
5480 // FIXME: What we're doing here is modifying the type-specifier that
5481 // precedes the first Decl. In the future the DeclGroup should have
Mike Stump1eb44332009-09-09 15:08:12 +00005482 // a separate type-specifier that we can rewrite.
Steve Naroff3d7e7862009-12-05 15:55:59 +00005483 // NOTE: We need to avoid rewriting the DeclStmt if it is within
5484 // the context of an ObjCForCollectionStmt. For example:
5485 // NSArray *someArray;
5486 // for (id <FooProtocol> index in someArray) ;
5487 // This is because RewriteObjCForCollectionStmt() does textual rewriting
5488 // and it depends on the original text locations/positions.
Benjamin Kramerb2041de2009-12-05 22:16:51 +00005489 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
Steve Naroff3d7e7862009-12-05 15:55:59 +00005490 RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
Mike Stump1eb44332009-09-09 15:08:12 +00005491
Steve Narofffa15fd92008-10-28 20:29:00 +00005492 // Blocks rewrite rules.
5493 for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
5494 DI != DE; ++DI) {
Douglas Gregor4afa39d2009-01-20 01:17:11 +00005495 Decl *SD = *DI;
Steve Narofffa15fd92008-10-28 20:29:00 +00005496 if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005497 if (isTopLevelBlockPointerType(ND->getType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005498 RewriteBlockPointerDecl(ND);
Mike Stump1eb44332009-09-09 15:08:12 +00005499 else if (ND->getType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005500 CheckFunctionPointerDecl(ND->getType(), ND);
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00005501 if (VarDecl *VD = dyn_cast<VarDecl>(SD)) {
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005502 if (VD->hasAttr<BlocksAttr>()) {
5503 static unsigned uniqueByrefDeclCount = 0;
5504 assert(!BlockByRefDeclNo.count(ND) &&
5505 "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl");
5506 BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005507 RewriteByRefVar(VD);
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005508 }
Fariborz Jahanian4c863ef2010-02-10 18:54:22 +00005509 else
5510 RewriteTypeOfDecl(VD);
5511 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005512 }
5513 if (TypedefDecl *TD = dyn_cast<TypedefDecl>(SD)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005514 if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005515 RewriteBlockPointerDecl(TD);
Mike Stump1eb44332009-09-09 15:08:12 +00005516 else if (TD->getUnderlyingType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005517 CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
5518 }
5519 }
5520 }
Mike Stump1eb44332009-09-09 15:08:12 +00005521
Steve Narofffa15fd92008-10-28 20:29:00 +00005522 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
5523 RewriteObjCQualifiedInterfaceTypes(CE);
Mike Stump1eb44332009-09-09 15:08:12 +00005524
5525 if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
Steve Narofffa15fd92008-10-28 20:29:00 +00005526 isa<DoStmt>(S) || isa<ForStmt>(S)) {
5527 assert(!Stmts.empty() && "Statement stack is empty");
Mike Stump1eb44332009-09-09 15:08:12 +00005528 assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||
5529 isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005530 && "Statement stack mismatch");
5531 Stmts.pop_back();
5532 }
5533 // Handle blocks rewriting.
5534 if (BlockDeclRefExpr *BDRE = dyn_cast<BlockDeclRefExpr>(S)) {
5535 if (BDRE->isByRef())
Steve Naroff621edce2009-04-29 16:37:50 +00005536 return RewriteBlockDeclRefExpr(BDRE);
Steve Narofffa15fd92008-10-28 20:29:00 +00005537 }
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00005538 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
5539 ValueDecl *VD = DRE->getDecl();
5540 if (VD->hasAttr<BlocksAttr>())
5541 return RewriteBlockDeclRefExpr(DRE);
Fariborz Jahanian6cb6eb42010-03-11 18:20:03 +00005542 if (HasLocalVariableExternalStorage(VD))
5543 return RewriteLocalVariableExternalStorage(DRE);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00005544 }
5545
Steve Narofffa15fd92008-10-28 20:29:00 +00005546 if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00005547 if (CE->getCallee()->getType()->isBlockPointerType()) {
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00005548 Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00005549 ReplaceStmt(S, BlockCall);
5550 return BlockCall;
5551 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005552 }
Steve Naroffb2f9e512008-11-03 23:29:32 +00005553 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005554 RewriteCastExpr(CE);
5555 }
5556#if 0
5557 if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
Sebastian Redl906082e2010-07-20 04:20:21 +00005558 CastExpr *Replacement = new (Context) CastExpr(ICE->getType(),
5559 ICE->getSubExpr(),
5560 SourceLocation());
Steve Narofffa15fd92008-10-28 20:29:00 +00005561 // Get the new text.
5562 std::string SStr;
5563 llvm::raw_string_ostream Buf(SStr);
Eli Friedman3a9eb442009-05-30 05:19:26 +00005564 Replacement->printPretty(Buf, *Context);
Steve Narofffa15fd92008-10-28 20:29:00 +00005565 const std::string &Str = Buf.str();
5566
5567 printf("CAST = %s\n", &Str[0]);
5568 InsertText(ICE->getSubExpr()->getLocStart(), &Str[0], Str.size());
5569 delete S;
5570 return Replacement;
5571 }
5572#endif
5573 // Return this stmt unmodified.
5574 return S;
5575}
5576
Steve Naroff3d7e7862009-12-05 15:55:59 +00005577void RewriteObjC::RewriteRecordBody(RecordDecl *RD) {
5578 for (RecordDecl::field_iterator i = RD->field_begin(),
5579 e = RD->field_end(); i != e; ++i) {
5580 FieldDecl *FD = *i;
5581 if (isTopLevelBlockPointerType(FD->getType()))
5582 RewriteBlockPointerDecl(FD);
5583 if (FD->getType()->isObjCQualifiedIdType() ||
5584 FD->getType()->isObjCQualifiedInterfaceType())
5585 RewriteObjCQualifiedInterfaceTypes(FD);
5586 }
5587}
5588
Steve Narofffa15fd92008-10-28 20:29:00 +00005589/// HandleDeclInMainFile - This is called for each top-level decl defined in the
5590/// main file of the input.
5591void RewriteObjC::HandleDeclInMainFile(Decl *D) {
5592 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
Steve Naroffcb735302008-12-17 00:20:22 +00005593 if (FD->isOverloadedOperator())
5594 return;
Mike Stump1eb44332009-09-09 15:08:12 +00005595
Steve Narofffa15fd92008-10-28 20:29:00 +00005596 // Since function prototypes don't have ParmDecl's, we check the function
5597 // prototype. This enables us to rewrite function declarations and
5598 // definitions using the same code.
Douglas Gregor72564e72009-02-26 23:50:07 +00005599 RewriteBlocksInFunctionProtoType(FD->getType(), FD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005600
Sebastian Redld3a413d2009-04-26 20:35:05 +00005601 // FIXME: If this should support Obj-C++, support CXXTryStmt
Argyrios Kyrtzidis5f1bfc12010-07-07 11:31:34 +00005602 if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005603 CurFunctionDef = FD;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00005604 CurFunctionDeclToDeclareForBlock = FD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005605 CollectPropertySetters(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005606 CurrentBody = Body;
Ted Kremenekeaab2062009-03-12 18:33:24 +00005607 Body =
5608 cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
5609 FD->setBody(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005610 CurrentBody = 0;
5611 if (PropParentMap) {
5612 delete PropParentMap;
5613 PropParentMap = 0;
5614 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005615 // This synthesizes and inserts the block "impl" struct, invoke function,
5616 // and any copy/dispose helper functions.
5617 InsertBlockLiteralsWithinFunction(FD);
5618 CurFunctionDef = 0;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00005619 CurFunctionDeclToDeclareForBlock = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00005620 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005621 return;
5622 }
5623 if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00005624 if (CompoundStmt *Body = MD->getCompoundBody()) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005625 CurMethodDef = MD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005626 CollectPropertySetters(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005627 CurrentBody = Body;
Ted Kremenekeaab2062009-03-12 18:33:24 +00005628 Body =
5629 cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
5630 MD->setBody(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005631 CurrentBody = 0;
5632 if (PropParentMap) {
5633 delete PropParentMap;
5634 PropParentMap = 0;
5635 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005636 InsertBlockLiteralsWithinMethod(MD);
5637 CurMethodDef = 0;
5638 }
5639 }
5640 if (ObjCImplementationDecl *CI = dyn_cast<ObjCImplementationDecl>(D))
5641 ClassImplementation.push_back(CI);
5642 else if (ObjCCategoryImplDecl *CI = dyn_cast<ObjCCategoryImplDecl>(D))
5643 CategoryImplementation.push_back(CI);
5644 else if (ObjCClassDecl *CD = dyn_cast<ObjCClassDecl>(D))
5645 RewriteForwardClassDecl(CD);
5646 else if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
5647 RewriteObjCQualifiedInterfaceTypes(VD);
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005648 if (isTopLevelBlockPointerType(VD->getType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005649 RewriteBlockPointerDecl(VD);
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005650 else if (VD->getType()->isFunctionPointerType()) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005651 CheckFunctionPointerDecl(VD->getType(), VD);
5652 if (VD->getInit()) {
Steve Naroffb2f9e512008-11-03 23:29:32 +00005653 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005654 RewriteCastExpr(CE);
5655 }
5656 }
Steve Naroff3d7e7862009-12-05 15:55:59 +00005657 } else if (VD->getType()->isRecordType()) {
5658 RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
5659 if (RD->isDefinition())
5660 RewriteRecordBody(RD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005661 }
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005662 if (VD->getInit()) {
5663 GlobalVarDecl = VD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005664 CollectPropertySetters(VD->getInit());
Steve Naroff8599e7a2008-12-08 16:43:47 +00005665 CurrentBody = VD->getInit();
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005666 RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
Steve Naroff8599e7a2008-12-08 16:43:47 +00005667 CurrentBody = 0;
5668 if (PropParentMap) {
5669 delete PropParentMap;
5670 PropParentMap = 0;
5671 }
Mike Stump1eb44332009-09-09 15:08:12 +00005672 SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(),
Daniel Dunbar4087f272010-08-17 22:39:59 +00005673 VD->getName());
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005674 GlobalVarDecl = 0;
5675
5676 // This is needed for blocks.
Steve Naroffb2f9e512008-11-03 23:29:32 +00005677 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005678 RewriteCastExpr(CE);
5679 }
5680 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005681 return;
5682 }
5683 if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005684 if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005685 RewriteBlockPointerDecl(TD);
Mike Stump1eb44332009-09-09 15:08:12 +00005686 else if (TD->getUnderlyingType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005687 CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
5688 return;
5689 }
5690 if (RecordDecl *RD = dyn_cast<RecordDecl>(D)) {
Steve Naroff3d7e7862009-12-05 15:55:59 +00005691 if (RD->isDefinition())
5692 RewriteRecordBody(RD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005693 return;
5694 }
5695 // Nothing yet.
5696}
5697
Chris Lattnerdacbc5d2009-03-28 04:11:33 +00005698void RewriteObjC::HandleTranslationUnit(ASTContext &C) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005699 if (Diags.hasErrorOccurred())
5700 return;
Mike Stump1eb44332009-09-09 15:08:12 +00005701
Steve Narofffa15fd92008-10-28 20:29:00 +00005702 RewriteInclude();
Mike Stump1eb44332009-09-09 15:08:12 +00005703
Steve Naroff621edce2009-04-29 16:37:50 +00005704 // Here's a great place to add any extra declarations that may be needed.
5705 // Write out meta data for each @protocol(<expr>).
Mike Stump1eb44332009-09-09 15:08:12 +00005706 for (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
Steve Naroff621edce2009-04-29 16:37:50 +00005707 E = ProtocolExprDecls.end(); I != E; ++I)
5708 RewriteObjCProtocolMetaData(*I, "", "", Preamble);
5709
Benjamin Kramerd999b372010-02-14 14:14:16 +00005710 InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false);
Steve Naroff0aab7962008-11-14 14:10:01 +00005711 if (ClassImplementation.size() || CategoryImplementation.size())
5712 RewriteImplementations();
Steve Naroff621edce2009-04-29 16:37:50 +00005713
Steve Narofffa15fd92008-10-28 20:29:00 +00005714 // Get the buffer corresponding to MainFileID. If we haven't changed it, then
5715 // we are done.
Mike Stump1eb44332009-09-09 15:08:12 +00005716 if (const RewriteBuffer *RewriteBuf =
Steve Narofffa15fd92008-10-28 20:29:00 +00005717 Rewrite.getRewriteBufferFor(MainFileID)) {
5718 //printf("Changed:\n");
5719 *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
5720 } else {
Benjamin Kramerd999b372010-02-14 14:14:16 +00005721 llvm::errs() << "No changes\n";
Steve Narofffa15fd92008-10-28 20:29:00 +00005722 }
Steve Narofface66252008-11-13 20:07:04 +00005723
Steve Naroff621edce2009-04-29 16:37:50 +00005724 if (ClassImplementation.size() || CategoryImplementation.size() ||
5725 ProtocolExprDecls.size()) {
Steve Naroff0aab7962008-11-14 14:10:01 +00005726 // Rewrite Objective-c meta data*
5727 std::string ResultStr;
5728 SynthesizeMetaDataIntoBuffer(ResultStr);
5729 // Emit metadata.
5730 *OutFile << ResultStr;
5731 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005732 OutFile->flush();
5733}