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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
Eli Friedman39d7c4d2009-05-18 22:50:54 +000014#include "clang/Frontend/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"
Chris Lattner77cd2a02007-10-11 00:43:27 +000029using namespace clang;
Chris Lattner158ecb92007-10-25 17:07:24 +000030using llvm::utostr;
Chris Lattner77cd2a02007-10-11 00:43:27 +000031
Chris Lattner77cd2a02007-10-11 00:43:27 +000032namespace {
Steve Naroffb29b4272008-04-14 22:03:09 +000033 class RewriteObjC : public ASTConsumer {
Fariborz Jahanian73e437b2009-12-23 21:18:41 +000034 enum {
35 BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)),
36 block, ... */
37 BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */
38 BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the
39 __block variable */
40 BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy
41 helpers */
42 BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
43 support routines */
44 BLOCK_BYREF_CURRENT_MAX = 256
45 };
46
47 enum {
48 BLOCK_NEEDS_FREE = (1 << 24),
49 BLOCK_HAS_COPY_DISPOSE = (1 << 25),
50 BLOCK_HAS_CXX_OBJ = (1 << 26),
51 BLOCK_IS_GC = (1 << 27),
52 BLOCK_IS_GLOBAL = (1 << 28),
53 BLOCK_HAS_DESCRIPTOR = (1 << 29)
54 };
55
Chris Lattner2c64b7b2007-10-16 21:07:07 +000056 Rewriter Rewrite;
Chris Lattnere365c502007-11-30 22:25:36 +000057 Diagnostic &Diags;
Steve Naroff4f943c22008-03-10 20:43:59 +000058 const LangOptions &LangOpts;
Steve Narofff69cc5d2008-01-30 19:17:43 +000059 unsigned RewriteFailedDiag;
Steve Naroff8c565152008-12-05 17:03:39 +000060 unsigned TryFinallyContainsReturnDiag;
Mike Stump1eb44332009-09-09 15:08:12 +000061
Chris Lattner01c57482007-10-17 22:35:30 +000062 ASTContext *Context;
Chris Lattner77cd2a02007-10-11 00:43:27 +000063 SourceManager *SM;
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +000064 TranslationUnitDecl *TUDecl;
Chris Lattner2b2453a2009-01-17 06:22:33 +000065 FileID MainFileID;
Chris Lattner26de4652007-12-02 01:13:47 +000066 const char *MainFileStart, *MainFileEnd;
Chris Lattner2c64b7b2007-10-16 21:07:07 +000067 SourceLocation LastIncLoc;
Mike Stump1eb44332009-09-09 15:08:12 +000068
Ted Kremeneka526c5c2008-01-07 19:49:32 +000069 llvm::SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
70 llvm::SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
71 llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
Steve Narofffbfe8252008-05-06 18:26:51 +000072 llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
Ted Kremeneka526c5c2008-01-07 19:49:32 +000073 llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCForwardDecls;
74 llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +000075 llvm::SmallVector<Stmt *, 32> Stmts;
76 llvm::SmallVector<int, 8> ObjCBcLabelNo;
Steve Naroff621edce2009-04-29 16:37:50 +000077 // Remember all the @protocol(<expr>) expressions.
78 llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +000079
80 llvm::DenseSet<uint64_t> CopyDestroyCache;
81
Steve Naroffd82a9ab2008-03-15 00:55:56 +000082 unsigned NumObjCStringLiterals;
Mike Stump1eb44332009-09-09 15:08:12 +000083
Steve Naroffebf2b562007-10-23 23:50:29 +000084 FunctionDecl *MsgSendFunctionDecl;
Steve Naroff874e2322007-11-15 10:28:18 +000085 FunctionDecl *MsgSendSuperFunctionDecl;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +000086 FunctionDecl *MsgSendStretFunctionDecl;
87 FunctionDecl *MsgSendSuperStretFunctionDecl;
Fariborz Jahanianacb49772007-12-03 21:26:48 +000088 FunctionDecl *MsgSendFpretFunctionDecl;
Steve Naroffebf2b562007-10-23 23:50:29 +000089 FunctionDecl *GetClassFunctionDecl;
Steve Naroff9bcb5fc2007-12-07 03:50:46 +000090 FunctionDecl *GetMetaClassFunctionDecl;
Steve Naroff934f2762007-10-24 22:48:43 +000091 FunctionDecl *SelGetUidFunctionDecl;
Steve Naroff96984642007-11-08 14:30:50 +000092 FunctionDecl *CFStringFunctionDecl;
Steve Naroffc0a123c2008-03-11 17:37:02 +000093 FunctionDecl *SuperContructorFunctionDecl;
Mike Stump1eb44332009-09-09 15:08:12 +000094
Steve Naroffbeaf2992007-11-03 11:27:19 +000095 // ObjC string constant support.
Steve Naroff248a7532008-04-15 22:42:06 +000096 VarDecl *ConstantStringClassReference;
Steve Naroffbeaf2992007-11-03 11:27:19 +000097 RecordDecl *NSStringRecord;
Mike Stump1eb44332009-09-09 15:08:12 +000098
Fariborz Jahanianb586cce2008-01-16 00:09:11 +000099 // ObjC foreach break/continue generation support.
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +0000100 int BcLabelCount;
Mike Stump1eb44332009-09-09 15:08:12 +0000101
Steve Naroff874e2322007-11-15 10:28:18 +0000102 // Needed for super.
Steve Naroff54055232008-10-27 17:20:55 +0000103 ObjCMethodDecl *CurMethodDef;
Steve Naroff874e2322007-11-15 10:28:18 +0000104 RecordDecl *SuperStructDecl;
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000105 RecordDecl *ConstantStringDecl;
Mike Stump1eb44332009-09-09 15:08:12 +0000106
Steve Naroff621edce2009-04-29 16:37:50 +0000107 TypeDecl *ProtocolTypeDecl;
108 QualType getProtocolType();
Mike Stump1eb44332009-09-09 15:08:12 +0000109
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000110 // Needed for header files being rewritten
111 bool IsHeader;
Mike Stump1eb44332009-09-09 15:08:12 +0000112
Steve Naroffa7b402d2008-03-28 22:26:09 +0000113 std::string InFileName;
Eli Friedman66d6f042009-05-18 22:20:00 +0000114 llvm::raw_ostream* OutFile;
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000115
116 bool SilenceRewriteMacroWarning;
Fariborz Jahanianf292fcf2010-01-07 22:51:18 +0000117 bool objc_impl_method;
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000118
Steve Naroffba92b2e2008-03-27 22:29:16 +0000119 std::string Preamble;
Steve Naroff54055232008-10-27 17:20:55 +0000120
121 // Block expressions.
122 llvm::SmallVector<BlockExpr *, 32> Blocks;
123 llvm::SmallVector<BlockDeclRefExpr *, 32> BlockDeclRefs;
124 llvm::DenseMap<BlockDeclRefExpr *, CallExpr *> BlockCallExprs;
Mike Stump1eb44332009-09-09 15:08:12 +0000125
Steve Naroff54055232008-10-27 17:20:55 +0000126 // Block related declarations.
127 llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDecls;
128 llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDecls;
Fariborz Jahaniana73165e2010-01-14 23:05:52 +0000129 llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
Steve Naroff54055232008-10-27 17:20:55 +0000130 llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
131
132 llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
133
Steve Naroffc77a6362008-12-04 16:24:46 +0000134 // This maps a property to it's assignment statement.
135 llvm::DenseMap<ObjCPropertyRefExpr *, BinaryOperator *> PropSetters;
Steve Naroff8599e7a2008-12-08 16:43:47 +0000136 // This maps a property to it's synthesied message expression.
137 // This allows us to rewrite chained getters (e.g. o.a.b.c).
138 llvm::DenseMap<ObjCPropertyRefExpr *, Stmt *> PropGetters;
Mike Stump1eb44332009-09-09 15:08:12 +0000139
Steve Naroff4c3580e2008-12-04 23:50:32 +0000140 // This maps an original source AST to it's rewritten form. This allows
141 // us to avoid rewriting the same node twice (which is very uncommon).
142 // This is needed to support some of the exotic property rewriting.
143 llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;
Steve Naroff15f081d2008-12-03 00:56:33 +0000144
Steve Naroff54055232008-10-27 17:20:55 +0000145 FunctionDecl *CurFunctionDef;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000146 FunctionDecl *CurFunctionDeclToDeclareForBlock;
Steve Naroff8e2f57a2008-10-29 18:15:37 +0000147 VarDecl *GlobalVarDecl;
Mike Stump1eb44332009-09-09 15:08:12 +0000148
Steve Naroffb619d952008-12-09 12:56:34 +0000149 bool DisableReplaceStmt;
Mike Stump1eb44332009-09-09 15:08:12 +0000150
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +0000151 static const int OBJC_ABI_VERSION =7 ;
Chris Lattner77cd2a02007-10-11 00:43:27 +0000152 public:
Ted Kremeneke3a61982008-05-31 20:11:04 +0000153 virtual void Initialize(ASTContext &context);
154
Chris Lattnerf04da132007-10-24 17:06:59 +0000155 // Top Level Driver code.
Chris Lattner682bf922009-03-29 16:50:03 +0000156 virtual void HandleTopLevelDecl(DeclGroupRef D) {
157 for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I)
158 HandleTopLevelSingleDecl(*I);
159 }
160 void HandleTopLevelSingleDecl(Decl *D);
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000161 void HandleDeclInMainFile(Decl *D);
Eli Friedman66d6f042009-05-18 22:20:00 +0000162 RewriteObjC(std::string inFile, llvm::raw_ostream *OS,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000163 Diagnostic &D, const LangOptions &LOpts,
164 bool silenceMacroWarn);
Ted Kremeneke452e0f2008-08-08 04:15:52 +0000165
166 ~RewriteObjC() {}
Mike Stump1eb44332009-09-09 15:08:12 +0000167
Chris Lattnerdacbc5d2009-03-28 04:11:33 +0000168 virtual void HandleTranslationUnit(ASTContext &C);
Mike Stump1eb44332009-09-09 15:08:12 +0000169
Fariborz Jahanian7e20ffe2010-01-28 01:41:20 +0000170 void ReplaceStmt(Stmt *Old, Stmt *New, int Size=0) {
Steve Naroff4c3580e2008-12-04 23:50:32 +0000171 Stmt *ReplacingStmt = ReplacedNodes[Old];
Mike Stump1eb44332009-09-09 15:08:12 +0000172
Steve Naroff4c3580e2008-12-04 23:50:32 +0000173 if (ReplacingStmt)
174 return; // We can't rewrite the same node twice.
Chris Lattnerdcbc5b02008-01-31 19:37:57 +0000175
Steve Naroffb619d952008-12-09 12:56:34 +0000176 if (DisableReplaceStmt)
177 return; // Used when rewriting the assignment of a property setter.
178
Steve Naroff4c3580e2008-12-04 23:50:32 +0000179 // If replacement succeeded or warning disabled return with no warning.
Fariborz Jahanian7e20ffe2010-01-28 01:41:20 +0000180 if (!Rewrite.ReplaceStmt(Old, New, Size)) {
Steve Naroff4c3580e2008-12-04 23:50:32 +0000181 ReplacedNodes[Old] = New;
182 return;
183 }
184 if (SilenceRewriteMacroWarning)
185 return;
Chris Lattner0a14eee2008-11-18 07:04:44 +0000186 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
187 << Old->getSourceRange();
Chris Lattnerdcbc5b02008-01-31 19:37:57 +0000188 }
Steve Naroffb619d952008-12-09 12:56:34 +0000189
190 void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
191 // Measaure the old text.
192 int Size = Rewrite.getRangeSize(SrcRange);
193 if (Size == -1) {
194 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
195 << Old->getSourceRange();
196 return;
197 }
198 // Get the new text.
199 std::string SStr;
200 llvm::raw_string_ostream S(SStr);
Chris Lattnere4f21422009-06-30 01:26:17 +0000201 New->printPretty(S, *Context, 0, PrintingPolicy(LangOpts));
Steve Naroffb619d952008-12-09 12:56:34 +0000202 const std::string &Str = S.str();
203
204 // If replacement succeeded or warning disabled return with no warning.
Daniel Dunbard7407dc2009-08-19 19:10:30 +0000205 if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
Steve Naroffb619d952008-12-09 12:56:34 +0000206 ReplacedNodes[Old] = New;
207 return;
208 }
209 if (SilenceRewriteMacroWarning)
210 return;
211 Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
212 << Old->getSourceRange();
213 }
214
Steve Naroffba92b2e2008-03-27 22:29:16 +0000215 void InsertText(SourceLocation Loc, const char *StrData, unsigned StrLen,
216 bool InsertAfter = true) {
Chris Lattneraadaf782008-01-31 19:51:04 +0000217 // If insertion succeeded or warning disabled return with no warning.
Daniel Dunbard7407dc2009-08-19 19:10:30 +0000218 if (!Rewrite.InsertText(Loc, llvm::StringRef(StrData, StrLen),
219 InsertAfter) ||
Chris Lattnerf3dd57e2008-01-31 19:42:41 +0000220 SilenceRewriteMacroWarning)
221 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000222
Chris Lattnerf3dd57e2008-01-31 19:42:41 +0000223 Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
224 }
Mike Stump1eb44332009-09-09 15:08:12 +0000225
Chris Lattneraadaf782008-01-31 19:51:04 +0000226 void RemoveText(SourceLocation Loc, unsigned StrLen) {
227 // If removal succeeded or warning disabled return with no warning.
228 if (!Rewrite.RemoveText(Loc, StrLen) || SilenceRewriteMacroWarning)
229 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000230
Chris Lattneraadaf782008-01-31 19:51:04 +0000231 Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
232 }
Chris Lattnerf04da132007-10-24 17:06:59 +0000233
Chris Lattneraadaf782008-01-31 19:51:04 +0000234 void ReplaceText(SourceLocation Start, unsigned OrigLength,
235 const char *NewStr, unsigned NewLength) {
236 // If removal succeeded or warning disabled return with no warning.
Daniel Dunbard7407dc2009-08-19 19:10:30 +0000237 if (!Rewrite.ReplaceText(Start, OrigLength,
238 llvm::StringRef(NewStr, NewLength)) ||
Chris Lattneraadaf782008-01-31 19:51:04 +0000239 SilenceRewriteMacroWarning)
240 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000241
Chris Lattneraadaf782008-01-31 19:51:04 +0000242 Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
243 }
Mike Stump1eb44332009-09-09 15:08:12 +0000244
Chris Lattnerf04da132007-10-24 17:06:59 +0000245 // Syntactic Rewriting.
Steve Naroffab972d32007-11-04 22:37:50 +0000246 void RewritePrologue(SourceLocation Loc);
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000247 void RewriteInclude();
Chris Lattnerf04da132007-10-24 17:06:59 +0000248 void RewriteTabs();
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000249 void RewriteForwardClassDecl(ObjCClassDecl *Dcl);
Steve Naroffa0876e82008-12-02 17:36:43 +0000250 void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
251 ObjCImplementationDecl *IMD,
252 ObjCCategoryImplDecl *CID);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000253 void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
Douglas Gregor4afa39d2009-01-20 01:17:11 +0000254 void RewriteImplementationDecl(Decl *Dcl);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000255 void RewriteObjCMethodDecl(ObjCMethodDecl *MDecl, std::string &ResultStr);
Fariborz Jahaniana73165e2010-01-14 23:05:52 +0000256 void RewriteByRefString(std::string &ResultStr, const std::string &Name,
257 ValueDecl *VD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000258 void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
259 void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
260 void RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *Dcl);
261 void RewriteMethodDeclaration(ObjCMethodDecl *Method);
Steve Naroff6327e0d2009-01-11 01:06:09 +0000262 void RewriteProperty(ObjCPropertyDecl *prop);
Steve Naroff09b266e2007-10-30 23:14:51 +0000263 void RewriteFunctionDecl(FunctionDecl *FD);
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000264 void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000265 void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
Steve Naroff4f95b752008-07-29 18:15:38 +0000266 void RewriteObjCQualifiedInterfaceTypes(Expr *E);
Steve Naroffd5255f52007-11-01 13:24:47 +0000267 bool needToScanForQualifiers(QualType T);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000268 ObjCInterfaceDecl *isSuperReceiver(Expr *recExpr);
Steve Naroff874e2322007-11-15 10:28:18 +0000269 QualType getSuperStructType();
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000270 QualType getConstantStringStructType();
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);
Chris Lattner3b2c58c2008-05-23 20:40:52 +0000281 Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV, SourceLocation OrigStart);
Steve Naroffc77a6362008-12-04 16:24:46 +0000282 Stmt *RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr);
Mike Stump1eb44332009-09-09 15:08:12 +0000283 Stmt *RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
Steve Naroffb619d952008-12-09 12:56:34 +0000284 SourceRange SrcRange);
Steve Naroffb42f8412007-11-05 14:50:49 +0000285 Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
Chris Lattnere64b7772007-10-24 16:57:36 +0000286 Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
Steve Naroffbeaf2992007-11-03 11:27:19 +0000287 Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +0000288 Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
Steve Naroffb85e77a2009-12-05 21:43:12 +0000289 void WarnAboutReturnGotoStmts(Stmt *S);
290 void HasReturnStmts(Stmt *S, bool &hasReturns);
291 void RewriteTryReturnStmts(Stmt *S);
292 void RewriteSyncReturnStmts(Stmt *S, std::string buf);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000293 Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
Fariborz Jahaniana0f55792008-01-29 22:59:37 +0000294 Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000295 Stmt *RewriteObjCCatchStmt(ObjCAtCatchStmt *S);
296 Stmt *RewriteObjCFinallyStmt(ObjCAtFinallyStmt *S);
297 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,
Steve Naroff934f2762007-10-24 22:48:43 +0000301 Expr **args, unsigned nargs);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +0000302 Stmt *SynthMessageExpr(ObjCMessageExpr *Exp);
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +0000303 Stmt *RewriteBreakStmt(BreakStmt *S);
304 Stmt *RewriteContinueStmt(ContinueStmt *S);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +0000305 void SynthCountByEnumWithState(std::string &buf);
Mike Stump1eb44332009-09-09 15:08:12 +0000306
Steve Naroff09b266e2007-10-30 23:14:51 +0000307 void SynthMsgSendFunctionDecl();
Steve Naroff874e2322007-11-15 10:28:18 +0000308 void SynthMsgSendSuperFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +0000309 void SynthMsgSendStretFunctionDecl();
Fariborz Jahanianacb49772007-12-03 21:26:48 +0000310 void SynthMsgSendFpretFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +0000311 void SynthMsgSendSuperStretFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +0000312 void SynthGetClassFunctionDecl();
Steve Naroff9bcb5fc2007-12-07 03:50:46 +0000313 void SynthGetMetaClassFunctionDecl();
Fariborz Jahaniana70711b2007-12-04 21:47:40 +0000314 void SynthSelGetUidFunctionDecl();
Steve Naroffc0a123c2008-03-11 17:37:02 +0000315 void SynthSuperContructorFunctionDecl();
Mike Stump1eb44332009-09-09 15:08:12 +0000316
Chris Lattnerf04da132007-10-24 17:06:59 +0000317 // Metadata emission.
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000318 void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +0000319 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000320
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000321 void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +0000322 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000323
Douglas Gregor653f1b12009-04-23 01:02:12 +0000324 template<typename MethodIterator>
325 void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
326 MethodIterator MethodEnd,
Fariborz Jahanian8e991ba2007-10-25 00:14:44 +0000327 bool IsInstanceMethod,
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +0000328 const char *prefix,
Chris Lattner158ecb92007-10-25 17:07:24 +0000329 const char *ClassName,
330 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000331
Steve Naroff621edce2009-04-29 16:37:50 +0000332 void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
333 const char *prefix,
334 const char *ClassName,
335 std::string &Result);
336 void RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Prots,
Mike Stump1eb44332009-09-09 15:08:12 +0000337 const char *prefix,
Steve Naroff621edce2009-04-29 16:37:50 +0000338 const char *ClassName,
339 std::string &Result);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000340 void SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +0000341 std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000342 void SynthesizeIvarOffsetComputation(ObjCImplementationDecl *IDecl,
343 ObjCIvarDecl *ivar,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +0000344 std::string &Result);
Steve Narofface66252008-11-13 20:07:04 +0000345 void RewriteImplementations();
346 void SynthesizeMetaDataIntoBuffer(std::string &Result);
Mike Stump1eb44332009-09-09 15:08:12 +0000347
Steve Naroff54055232008-10-27 17:20:55 +0000348 // Block rewriting.
Mike Stump1eb44332009-09-09 15:08:12 +0000349 void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);
Steve Naroff54055232008-10-27 17:20:55 +0000350 void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
Mike Stump1eb44332009-09-09 15:08:12 +0000351
Steve Naroff54055232008-10-27 17:20:55 +0000352 void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
353 void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
Mike Stump1eb44332009-09-09 15:08:12 +0000354
355 // Block specific rewrite rules.
Steve Naroff54055232008-10-27 17:20:55 +0000356 void RewriteBlockCall(CallExpr *Exp);
357 void RewriteBlockPointerDecl(NamedDecl *VD);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +0000358 void RewriteByRefVar(VarDecl *VD);
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +0000359 std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +0000360 Stmt *RewriteBlockDeclRefExpr(Expr *VD);
Steve Naroff54055232008-10-27 17:20:55 +0000361 void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
Mike Stump1eb44332009-09-09 15:08:12 +0000362
363 std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
Steve Naroff54055232008-10-27 17:20:55 +0000364 const char *funcName, std::string Tag);
Mike Stump1eb44332009-09-09 15:08:12 +0000365 std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
Steve Naroff54055232008-10-27 17:20:55 +0000366 const char *funcName, std::string Tag);
Steve Naroff01aec112009-12-06 21:14:13 +0000367 std::string SynthesizeBlockImpl(BlockExpr *CE,
368 std::string Tag, std::string Desc);
369 std::string SynthesizeBlockDescriptor(std::string DescTag,
370 std::string ImplTag,
371 int i, const char *funcName,
372 unsigned hasCopy);
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +0000373 Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
Steve Naroff54055232008-10-27 17:20:55 +0000374 void SynthesizeBlockLiterals(SourceLocation FunLocStart,
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000375 const char *FunName);
Steve Naroff3d7e7862009-12-05 15:55:59 +0000376 void RewriteRecordBody(RecordDecl *RD);
Mike Stump1eb44332009-09-09 15:08:12 +0000377
Steve Naroff54055232008-10-27 17:20:55 +0000378 void CollectBlockDeclRefInfo(BlockExpr *Exp);
379 void GetBlockCallExprs(Stmt *S);
380 void GetBlockDeclRefExprs(Stmt *S);
Mike Stump1eb44332009-09-09 15:08:12 +0000381
Steve Naroff54055232008-10-27 17:20:55 +0000382 // We avoid calling Type::isBlockPointerType(), since it operates on the
383 // canonical type. We only care if the top-level type is a closure pointer.
Ted Kremenek8189cde2009-02-07 01:47:29 +0000384 bool isTopLevelBlockPointerType(QualType T) {
385 return isa<BlockPointerType>(T);
386 }
Mike Stump1eb44332009-09-09 15:08:12 +0000387
Steve Naroff54055232008-10-27 17:20:55 +0000388 // FIXME: This predicate seems like it would be useful to add to ASTContext.
389 bool isObjCType(QualType T) {
390 if (!LangOpts.ObjC1 && !LangOpts.ObjC2)
391 return false;
Mike Stump1eb44332009-09-09 15:08:12 +0000392
Steve Naroff54055232008-10-27 17:20:55 +0000393 QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
Mike Stump1eb44332009-09-09 15:08:12 +0000394
Steve Naroff54055232008-10-27 17:20:55 +0000395 if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
396 OCT == Context->getCanonicalType(Context->getObjCClassType()))
397 return true;
Mike Stump1eb44332009-09-09 15:08:12 +0000398
Ted Kremenek6217b802009-07-29 21:53:49 +0000399 if (const PointerType *PT = OCT->getAs<PointerType>()) {
Mike Stump1eb44332009-09-09 15:08:12 +0000400 if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
Steve Naroffd1b3c2d2009-06-17 22:40:22 +0000401 PT->getPointeeType()->isObjCQualifiedIdType())
Steve Naroff54055232008-10-27 17:20:55 +0000402 return true;
403 }
404 return false;
405 }
406 bool PointerTypeTakesAnyBlockArguments(QualType QT);
Ted Kremenek8189cde2009-02-07 01:47:29 +0000407 void GetExtentOfArgList(const char *Name, const char *&LParen,
408 const char *&RParen);
Steve Naroffb2f9e512008-11-03 23:29:32 +0000409 void RewriteCastExpr(CStyleCastExpr *CE);
Mike Stump1eb44332009-09-09 15:08:12 +0000410
Steve Narofffa15fd92008-10-28 20:29:00 +0000411 FunctionDecl *SynthBlockInitFunctionDecl(const char *name);
Steve Naroff8e2f57a2008-10-29 18:15:37 +0000412 Stmt *SynthBlockInitExpr(BlockExpr *Exp);
Mike Stump1eb44332009-09-09 15:08:12 +0000413
Steve Naroff621edce2009-04-29 16:37:50 +0000414 void QuoteDoublequotes(std::string &From, std::string &To) {
Mike Stump1eb44332009-09-09 15:08:12 +0000415 for (unsigned i = 0; i < From.length(); i++) {
Steve Naroff621edce2009-04-29 16:37:50 +0000416 if (From[i] == '"')
417 To += "\\\"";
418 else
419 To += From[i];
420 }
421 }
Chris Lattner77cd2a02007-10-11 00:43:27 +0000422 };
John McCall9d125032010-01-15 18:39:57 +0000423
424 // Helper function: create a CStyleCastExpr with trivial type source info.
425 CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
426 CastExpr::CastKind Kind, Expr *E) {
427 TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
428 return new (Ctx) CStyleCastExpr(Ty, Kind, E, TInfo,
429 SourceLocation(), SourceLocation());
430 }
Chris Lattner77cd2a02007-10-11 00:43:27 +0000431}
432
Mike Stump1eb44332009-09-09 15:08:12 +0000433void RewriteObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
434 NamedDecl *D) {
Douglas Gregor72564e72009-02-26 23:50:07 +0000435 if (FunctionProtoType *fproto = dyn_cast<FunctionProtoType>(funcType)) {
Mike Stump1eb44332009-09-09 15:08:12 +0000436 for (FunctionProtoType::arg_type_iterator I = fproto->arg_type_begin(),
Steve Naroff54055232008-10-27 17:20:55 +0000437 E = fproto->arg_type_end(); I && (I != E); ++I)
Steve Naroff01f2ffa2008-12-11 21:05:33 +0000438 if (isTopLevelBlockPointerType(*I)) {
Steve Naroff54055232008-10-27 17:20:55 +0000439 // All the args are checked/rewritten. Don't call twice!
440 RewriteBlockPointerDecl(D);
441 break;
442 }
443 }
444}
445
446void RewriteObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
Ted Kremenek6217b802009-07-29 21:53:49 +0000447 const PointerType *PT = funcType->getAs<PointerType>();
Steve Naroff54055232008-10-27 17:20:55 +0000448 if (PT && PointerTypeTakesAnyBlockArguments(funcType))
Douglas Gregor72564e72009-02-26 23:50:07 +0000449 RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
Steve Naroff54055232008-10-27 17:20:55 +0000450}
451
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000452static bool IsHeaderFile(const std::string &Filename) {
453 std::string::size_type DotPos = Filename.rfind('.');
Mike Stump1eb44332009-09-09 15:08:12 +0000454
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000455 if (DotPos == std::string::npos) {
456 // no file extension
Mike Stump1eb44332009-09-09 15:08:12 +0000457 return false;
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000458 }
Mike Stump1eb44332009-09-09 15:08:12 +0000459
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000460 std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
461 // C header: .h
462 // C++ header: .hh or .H;
463 return Ext == "h" || Ext == "hh" || Ext == "H";
Mike Stump1eb44332009-09-09 15:08:12 +0000464}
Fariborz Jahanianb4b2f0c2008-01-18 01:15:54 +0000465
Eli Friedman66d6f042009-05-18 22:20:00 +0000466RewriteObjC::RewriteObjC(std::string inFile, llvm::raw_ostream* OS,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000467 Diagnostic &D, const LangOptions &LOpts,
468 bool silenceMacroWarn)
469 : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(OS),
470 SilenceRewriteMacroWarning(silenceMacroWarn) {
Steve Naroffa7b402d2008-03-28 22:26:09 +0000471 IsHeader = IsHeaderFile(inFile);
Mike Stump1eb44332009-09-09 15:08:12 +0000472 RewriteFailedDiag = Diags.getCustomDiagID(Diagnostic::Warning,
Steve Naroffa7b402d2008-03-28 22:26:09 +0000473 "rewriting sub-expression within a macro (may not be correct)");
Mike Stump1eb44332009-09-09 15:08:12 +0000474 TryFinallyContainsReturnDiag = Diags.getCustomDiagID(Diagnostic::Warning,
Ted Kremenek8189cde2009-02-07 01:47:29 +0000475 "rewriter doesn't support user-specified control flow semantics "
476 "for @try/@finally (code may not execute properly)");
Steve Naroffa7b402d2008-03-28 22:26:09 +0000477}
478
Eli Friedmanbce831b2009-05-18 22:29:17 +0000479ASTConsumer *clang::CreateObjCRewriter(const std::string& InFile,
480 llvm::raw_ostream* OS,
Mike Stump1eb44332009-09-09 15:08:12 +0000481 Diagnostic &Diags,
Eli Friedmanc6d656e2009-05-18 22:39:16 +0000482 const LangOptions &LOpts,
483 bool SilenceRewriteMacroWarning) {
484 return new RewriteObjC(InFile, OS, Diags, LOpts, SilenceRewriteMacroWarning);
Chris Lattnere365c502007-11-30 22:25:36 +0000485}
Chris Lattner77cd2a02007-10-11 00:43:27 +0000486
Steve Naroffb29b4272008-04-14 22:03:09 +0000487void RewriteObjC::Initialize(ASTContext &context) {
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000488 Context = &context;
489 SM = &Context->getSourceManager();
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +0000490 TUDecl = Context->getTranslationUnitDecl();
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000491 MsgSendFunctionDecl = 0;
492 MsgSendSuperFunctionDecl = 0;
493 MsgSendStretFunctionDecl = 0;
494 MsgSendSuperStretFunctionDecl = 0;
495 MsgSendFpretFunctionDecl = 0;
496 GetClassFunctionDecl = 0;
497 GetMetaClassFunctionDecl = 0;
498 SelGetUidFunctionDecl = 0;
499 CFStringFunctionDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000500 ConstantStringClassReference = 0;
501 NSStringRecord = 0;
Steve Naroff54055232008-10-27 17:20:55 +0000502 CurMethodDef = 0;
503 CurFunctionDef = 0;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +0000504 CurFunctionDeclToDeclareForBlock = 0;
Steve Naroffb619d952008-12-09 12:56:34 +0000505 GlobalVarDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000506 SuperStructDecl = 0;
Steve Naroff621edce2009-04-29 16:37:50 +0000507 ProtocolTypeDecl = 0;
Steve Naroff9630ec52008-03-27 22:59:54 +0000508 ConstantStringDecl = 0;
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000509 BcLabelCount = 0;
Steve Naroffc0a123c2008-03-11 17:37:02 +0000510 SuperContructorFunctionDecl = 0;
Steve Naroffd82a9ab2008-03-15 00:55:56 +0000511 NumObjCStringLiterals = 0;
Steve Naroff68272b82008-12-08 20:01:41 +0000512 PropParentMap = 0;
513 CurrentBody = 0;
Steve Naroffb619d952008-12-09 12:56:34 +0000514 DisableReplaceStmt = false;
Fariborz Jahanianf292fcf2010-01-07 22:51:18 +0000515 objc_impl_method = false;
Mike Stump1eb44332009-09-09 15:08:12 +0000516
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000517 // Get the ID and start/end of the main file.
518 MainFileID = SM->getMainFileID();
519 const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
520 MainFileStart = MainBuf->getBufferStart();
521 MainFileEnd = MainBuf->getBufferEnd();
Mike Stump1eb44332009-09-09 15:08:12 +0000522
Chris Lattner2c78b872009-04-14 23:22:57 +0000523 Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOptions());
Mike Stump1eb44332009-09-09 15:08:12 +0000524
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000525 // declaring objc_selector outside the parameter list removes a silly
526 // scope related warning...
Steve Naroffba92b2e2008-03-27 22:29:16 +0000527 if (IsHeader)
Steve Naroff62c26322009-02-03 20:39:18 +0000528 Preamble = "#pragma once\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000529 Preamble += "struct objc_selector; struct objc_class;\n";
Steve Naroff46a98a72008-12-23 20:11:22 +0000530 Preamble += "struct __rw_objc_super { struct objc_object *object; ";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000531 Preamble += "struct objc_object *superClass; ";
Steve Naroffc0a123c2008-03-11 17:37:02 +0000532 if (LangOpts.Microsoft) {
533 // Add a constructor for creating temporary objects.
Ted Kremenek8189cde2009-02-07 01:47:29 +0000534 Preamble += "__rw_objc_super(struct objc_object *o, struct objc_object *s) "
535 ": ";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000536 Preamble += "object(o), superClass(s) {} ";
Steve Naroffc0a123c2008-03-11 17:37:02 +0000537 }
Steve Naroffba92b2e2008-03-27 22:29:16 +0000538 Preamble += "};\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000539 Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
540 Preamble += "typedef struct objc_object Protocol;\n";
541 Preamble += "#define _REWRITER_typedef_Protocol\n";
542 Preamble += "#endif\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000543 if (LangOpts.Microsoft) {
544 Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
545 Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
546 } else
547 Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";
548 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000549 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000550 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000551 Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000552 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend_stret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000553 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000554 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper_stret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000555 Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000556 Preamble += "__OBJC_RW_DLLIMPORT double objc_msgSend_fpret";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000557 Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000558 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getClass";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000559 Preamble += "(const char *);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000560 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getMetaClass";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000561 Preamble += "(const char *);\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000562 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw(struct objc_object *);\n";
563 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_enter(void *);\n";
564 Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_exit(void *);\n";
565 Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_exception_extract(void *);\n";
566 Preamble += "__OBJC_RW_DLLIMPORT int objc_exception_match";
Steve Naroff580ca782008-05-09 21:17:56 +0000567 Preamble += "(struct objc_class *, struct objc_object *);\n";
Steve Naroff59f05a42008-07-16 18:58:11 +0000568 // @synchronized hooks.
Steve Naroff4ebd7162008-12-08 17:30:33 +0000569 Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_enter(struct objc_object *);\n";
570 Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_exit(struct objc_object *);\n";
571 Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000572 Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
573 Preamble += "struct __objcFastEnumerationState {\n\t";
574 Preamble += "unsigned long state;\n\t";
Steve Naroffb10f2732008-04-04 22:58:22 +0000575 Preamble += "void **itemsPtr;\n\t";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000576 Preamble += "unsigned long *mutationsPtr;\n\t";
577 Preamble += "unsigned long extra[5];\n};\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000578 Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000579 Preamble += "#define __FASTENUMERATIONSTATE\n";
580 Preamble += "#endif\n";
581 Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
582 Preamble += "struct __NSConstantStringImpl {\n";
583 Preamble += " int *isa;\n";
584 Preamble += " int flags;\n";
585 Preamble += " char *str;\n";
586 Preamble += " long length;\n";
587 Preamble += "};\n";
Steve Naroff88bee742008-08-05 20:04:48 +0000588 Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
589 Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
590 Preamble += "#else\n";
Steve Naroff4ebd7162008-12-08 17:30:33 +0000591 Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
Steve Naroff88bee742008-08-05 20:04:48 +0000592 Preamble += "#endif\n";
Steve Naroffba92b2e2008-03-27 22:29:16 +0000593 Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
594 Preamble += "#endif\n";
Steve Naroff54055232008-10-27 17:20:55 +0000595 // Blocks preamble.
596 Preamble += "#ifndef BLOCK_IMPL\n";
597 Preamble += "#define BLOCK_IMPL\n";
598 Preamble += "struct __block_impl {\n";
599 Preamble += " void *isa;\n";
600 Preamble += " int Flags;\n";
Steve Naroff01aec112009-12-06 21:14:13 +0000601 Preamble += " int Reserved;\n";
Steve Naroff54055232008-10-27 17:20:55 +0000602 Preamble += " void *FuncPtr;\n";
603 Preamble += "};\n";
Steve Naroff5bc60d02008-12-16 15:50:30 +0000604 Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
Steve Naroffc9c1e9c2009-12-06 01:52:22 +0000605 Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
Steve Naroffa851e602009-12-06 01:33:56 +0000606 Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_assign(void *, const void *, const int);\n";
607 Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
608 Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
609 Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
610 Preamble += "#else\n";
Steve Naroffcd826372010-01-05 18:09:31 +0000611 Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
612 Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
Steve Naroffa851e602009-12-06 01:33:56 +0000613 Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
614 Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
615 Preamble += "#endif\n";
Steve Naroff54055232008-10-27 17:20:55 +0000616 Preamble += "#endif\n";
Steve Naroffa48396e2008-10-27 18:50:14 +0000617 if (LangOpts.Microsoft) {
Steve Naroff4ebd7162008-12-08 17:30:33 +0000618 Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
619 Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
Steve Naroffa48396e2008-10-27 18:50:14 +0000620 Preamble += "#define __attribute__(X)\n";
Fariborz Jahanian34204192010-01-15 22:29:39 +0000621 Preamble += "#define __weak\n";
Steve Naroffa48396e2008-10-27 18:50:14 +0000622 }
Fariborz Jahanian2086d542010-01-05 19:21:35 +0000623 else {
Fariborz Jahanian52b08f22009-12-23 02:07:37 +0000624 Preamble += "#define __block\n";
Fariborz Jahanian2086d542010-01-05 19:21:35 +0000625 Preamble += "#define __weak\n";
626 }
Chris Lattner9e13c2e2008-01-31 19:38:44 +0000627}
628
629
Chris Lattnerf04da132007-10-24 17:06:59 +0000630//===----------------------------------------------------------------------===//
631// Top Level Driver Code
632//===----------------------------------------------------------------------===//
633
Chris Lattner682bf922009-03-29 16:50:03 +0000634void RewriteObjC::HandleTopLevelSingleDecl(Decl *D) {
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000635 // Two cases: either the decl could be in the main file, or it could be in a
636 // #included file. If the former, rewrite it now. If the later, check to see
637 // if we rewrote the #include/#import.
638 SourceLocation Loc = D->getLocation();
Chris Lattnerf7cf85b2009-01-16 07:36:28 +0000639 Loc = SM->getInstantiationLoc(Loc);
Mike Stump1eb44332009-09-09 15:08:12 +0000640
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000641 // If this is for a builtin, ignore it.
642 if (Loc.isInvalid()) return;
643
Steve Naroffebf2b562007-10-23 23:50:29 +0000644 // Look for built-in declarations that we need to refer during the rewrite.
645 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
Steve Naroff09b266e2007-10-30 23:14:51 +0000646 RewriteFunctionDecl(FD);
Steve Naroff248a7532008-04-15 22:42:06 +0000647 } else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
Steve Naroffbeaf2992007-11-03 11:27:19 +0000648 // declared in <Foundation/NSString.h>
Chris Lattner8ec03f52008-11-24 03:54:41 +0000649 if (strcmp(FVD->getNameAsCString(), "_NSConstantStringClassReference") == 0) {
Steve Naroffbeaf2992007-11-03 11:27:19 +0000650 ConstantStringClassReference = FVD;
651 return;
652 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000653 } else if (ObjCInterfaceDecl *MD = dyn_cast<ObjCInterfaceDecl>(D)) {
Steve Naroffbef11852007-10-26 20:53:56 +0000654 RewriteInterfaceDecl(MD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000655 } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
Steve Naroff423cb562007-10-30 13:30:57 +0000656 RewriteCategoryDecl(CD);
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000657 } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
Steve Naroff752d6ef2007-10-30 16:42:30 +0000658 RewriteProtocolDecl(PD);
Mike Stump1eb44332009-09-09 15:08:12 +0000659 } else if (ObjCForwardProtocolDecl *FP =
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000660 dyn_cast<ObjCForwardProtocolDecl>(D)){
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000661 RewriteForwardProtocolDecl(FP);
Douglas Gregord0434102009-01-09 00:49:46 +0000662 } else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
663 // Recurse into linkage specifications
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000664 for (DeclContext::decl_iterator DI = LSD->decls_begin(),
665 DIEnd = LSD->decls_end();
Douglas Gregord0434102009-01-09 00:49:46 +0000666 DI != DIEnd; ++DI)
Chris Lattner682bf922009-03-29 16:50:03 +0000667 HandleTopLevelSingleDecl(*DI);
Steve Naroffebf2b562007-10-23 23:50:29 +0000668 }
Chris Lattnerf04da132007-10-24 17:06:59 +0000669 // If we have a decl in the main file, see if we should rewrite it.
Ted Kremenekcf7e9582008-04-14 21:24:13 +0000670 if (SM->isFromMainFile(Loc))
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000671 return HandleDeclInMainFile(D);
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000672}
673
Chris Lattnerf04da132007-10-24 17:06:59 +0000674//===----------------------------------------------------------------------===//
675// Syntactic (non-AST) Rewriting Code
676//===----------------------------------------------------------------------===//
677
Steve Naroffb29b4272008-04-14 22:03:09 +0000678void RewriteObjC::RewriteInclude() {
Chris Lattner2b2453a2009-01-17 06:22:33 +0000679 SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000680 std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
681 const char *MainBufStart = MainBuf.first;
682 const char *MainBufEnd = MainBuf.second;
683 size_t ImportLen = strlen("import");
684 size_t IncludeLen = strlen("include");
Mike Stump1eb44332009-09-09 15:08:12 +0000685
Fariborz Jahanianaf57b462008-01-19 01:03:17 +0000686 // Loop over the whole file, looking for includes.
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000687 for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
688 if (*BufPtr == '#') {
689 if (++BufPtr == MainBufEnd)
690 return;
691 while (*BufPtr == ' ' || *BufPtr == '\t')
692 if (++BufPtr == MainBufEnd)
693 return;
694 if (!strncmp(BufPtr, "import", ImportLen)) {
695 // replace import with include
Mike Stump1eb44332009-09-09 15:08:12 +0000696 SourceLocation ImportLoc =
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000697 LocStart.getFileLocWithOffset(BufPtr-MainBufStart);
Chris Lattneraadaf782008-01-31 19:51:04 +0000698 ReplaceText(ImportLoc, ImportLen, "include", IncludeLen);
Fariborz Jahanian452b8992008-01-19 00:30:35 +0000699 BufPtr += ImportLen;
700 }
701 }
702 }
Chris Lattner2c64b7b2007-10-16 21:07:07 +0000703}
704
Steve Naroffb29b4272008-04-14 22:03:09 +0000705void RewriteObjC::RewriteTabs() {
Chris Lattnerf04da132007-10-24 17:06:59 +0000706 std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
707 const char *MainBufStart = MainBuf.first;
708 const char *MainBufEnd = MainBuf.second;
Mike Stump1eb44332009-09-09 15:08:12 +0000709
Chris Lattnerf04da132007-10-24 17:06:59 +0000710 // Loop over the whole file, looking for tabs.
711 for (const char *BufPtr = MainBufStart; BufPtr != MainBufEnd; ++BufPtr) {
712 if (*BufPtr != '\t')
713 continue;
Mike Stump1eb44332009-09-09 15:08:12 +0000714
Chris Lattnerf04da132007-10-24 17:06:59 +0000715 // Okay, we found a tab. This tab will turn into at least one character,
716 // but it depends on which 'virtual column' it is in. Compute that now.
717 unsigned VCol = 0;
718 while (BufPtr-VCol != MainBufStart && BufPtr[-VCol-1] != '\t' &&
719 BufPtr[-VCol-1] != '\n' && BufPtr[-VCol-1] != '\r')
720 ++VCol;
Mike Stump1eb44332009-09-09 15:08:12 +0000721
Chris Lattnerf04da132007-10-24 17:06:59 +0000722 // Okay, now that we know the virtual column, we know how many spaces to
723 // insert. We assume 8-character tab-stops.
724 unsigned Spaces = 8-(VCol & 7);
Mike Stump1eb44332009-09-09 15:08:12 +0000725
Chris Lattnerf04da132007-10-24 17:06:59 +0000726 // Get the location of the tab.
Chris Lattner2b2453a2009-01-17 06:22:33 +0000727 SourceLocation TabLoc = SM->getLocForStartOfFile(MainFileID);
728 TabLoc = TabLoc.getFileLocWithOffset(BufPtr-MainBufStart);
Mike Stump1eb44332009-09-09 15:08:12 +0000729
Chris Lattnerf04da132007-10-24 17:06:59 +0000730 // Rewrite the single tab character into a sequence of spaces.
Chris Lattneraadaf782008-01-31 19:51:04 +0000731 ReplaceText(TabLoc, 1, " ", Spaces);
Chris Lattnerf04da132007-10-24 17:06:59 +0000732 }
Chris Lattner8a12c272007-10-11 18:38:32 +0000733}
734
Steve Naroffeb0646c2008-12-02 15:48:25 +0000735static std::string getIvarAccessString(ObjCInterfaceDecl *ClassDecl,
736 ObjCIvarDecl *OID) {
737 std::string S;
738 S = "((struct ";
739 S += ClassDecl->getIdentifier()->getName();
740 S += "_IMPL *)self)->";
Daniel Dunbar5ffe14c2009-10-18 20:26:27 +0000741 S += OID->getName();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000742 return S;
743}
744
Steve Naroffa0876e82008-12-02 17:36:43 +0000745void RewriteObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
746 ObjCImplementationDecl *IMD,
747 ObjCCategoryImplDecl *CID) {
Steve Naroffd40910b2008-12-01 20:33:01 +0000748 SourceLocation startLoc = PID->getLocStart();
749 InsertText(startLoc, "// ", 3);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000750 const char *startBuf = SM->getCharacterData(startLoc);
751 assert((*startBuf == '@') && "bogus @synthesize location");
752 const char *semiBuf = strchr(startBuf, ';');
753 assert((*semiBuf == ';') && "@synthesize: can't find ';'");
Ted Kremenek8189cde2009-02-07 01:47:29 +0000754 SourceLocation onePastSemiLoc =
755 startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000756
757 if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
758 return; // FIXME: is this correct?
Mike Stump1eb44332009-09-09 15:08:12 +0000759
Steve Naroffeb0646c2008-12-02 15:48:25 +0000760 // Generate the 'getter' function.
Steve Naroffeb0646c2008-12-02 15:48:25 +0000761 ObjCPropertyDecl *PD = PID->getPropertyDecl();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000762 ObjCInterfaceDecl *ClassDecl = PD->getGetterMethodDecl()->getClassInterface();
Steve Naroffeb0646c2008-12-02 15:48:25 +0000763 ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
Mike Stump1eb44332009-09-09 15:08:12 +0000764
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000765 if (!OID)
766 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000767
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000768 std::string Getr;
769 RewriteObjCMethodDecl(PD->getGetterMethodDecl(), Getr);
770 Getr += "{ ";
771 // Synthesize an explicit cast to gain access to the ivar.
Mike Stump1eb44332009-09-09 15:08:12 +0000772 // FIXME: deal with code generation implications for various property
773 // attributes (copy, retain, nonatomic).
Steve Naroff3539cdb2008-12-02 17:54:50 +0000774 // See objc-act.c:objc_synthesize_new_getter() for details.
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000775 Getr += "return " + getIvarAccessString(ClassDecl, OID);
776 Getr += "; }";
Steve Naroffeb0646c2008-12-02 15:48:25 +0000777 InsertText(onePastSemiLoc, Getr.c_str(), Getr.size());
Steve Naroffeb0646c2008-12-02 15:48:25 +0000778 if (PD->isReadOnly())
779 return;
Mike Stump1eb44332009-09-09 15:08:12 +0000780
Steve Naroffeb0646c2008-12-02 15:48:25 +0000781 // Generate the 'setter' function.
782 std::string Setr;
783 RewriteObjCMethodDecl(PD->getSetterMethodDecl(), Setr);
Steve Naroffeb0646c2008-12-02 15:48:25 +0000784 Setr += "{ ";
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000785 // Synthesize an explicit cast to initialize the ivar.
Mike Stump1eb44332009-09-09 15:08:12 +0000786 // FIXME: deal with code generation implications for various property
787 // attributes (copy, retain, nonatomic).
Steve Naroff15f081d2008-12-03 00:56:33 +0000788 // See objc-act.c:objc_synthesize_new_setter() for details.
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000789 Setr += getIvarAccessString(ClassDecl, OID) + " = ";
Steve Narofff4312dc2008-12-11 19:29:16 +0000790 Setr += PD->getNameAsCString();
Steve Naroffdd2fdf12008-12-02 16:05:55 +0000791 Setr += "; }";
Steve Naroffeb0646c2008-12-02 15:48:25 +0000792 InsertText(onePastSemiLoc, Setr.c_str(), Setr.size());
Steve Naroffd40910b2008-12-01 20:33:01 +0000793}
Chris Lattner8a12c272007-10-11 18:38:32 +0000794
Steve Naroffb29b4272008-04-14 22:03:09 +0000795void RewriteObjC::RewriteForwardClassDecl(ObjCClassDecl *ClassDecl) {
Chris Lattnerf04da132007-10-24 17:06:59 +0000796 // Get the start location and compute the semi location.
797 SourceLocation startLoc = ClassDecl->getLocation();
798 const char *startBuf = SM->getCharacterData(startLoc);
799 const char *semiPtr = strchr(startBuf, ';');
Mike Stump1eb44332009-09-09 15:08:12 +0000800
Chris Lattnerf04da132007-10-24 17:06:59 +0000801 // Translate to typedef's that forward reference structs with the same name
802 // as the class. As a convenience, we include the original declaration
803 // as a comment.
804 std::string typedefString;
Fariborz Jahanian91fbd122010-01-11 22:48:40 +0000805 typedefString += "// @class ";
806 for (ObjCClassDecl::iterator I = ClassDecl->begin(), E = ClassDecl->end();
807 I != E; ++I) {
808 ObjCInterfaceDecl *ForwardDecl = I->getInterface();
809 typedefString += ForwardDecl->getNameAsString();
810 if (I+1 != E)
811 typedefString += ", ";
812 else
813 typedefString += ";\n";
814 }
815
Chris Lattner67956052009-02-20 18:04:31 +0000816 for (ObjCClassDecl::iterator I = ClassDecl->begin(), E = ClassDecl->end();
817 I != E; ++I) {
Ted Kremenek321c22f2009-11-18 00:28:11 +0000818 ObjCInterfaceDecl *ForwardDecl = I->getInterface();
Steve Naroff32174822007-11-09 12:50:28 +0000819 typedefString += "#ifndef _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000820 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000821 typedefString += "\n";
822 typedefString += "#define _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000823 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000824 typedefString += "\n";
Steve Naroff352336b2007-11-05 14:36:37 +0000825 typedefString += "typedef struct objc_object ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000826 typedefString += ForwardDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +0000827 typedefString += ";\n#endif\n";
Steve Naroff934f2762007-10-24 22:48:43 +0000828 }
Mike Stump1eb44332009-09-09 15:08:12 +0000829
Steve Naroff934f2762007-10-24 22:48:43 +0000830 // Replace the @class with typedefs corresponding to the classes.
Mike Stump1eb44332009-09-09 15:08:12 +0000831 ReplaceText(startLoc, semiPtr-startBuf+1,
Chris Lattneraadaf782008-01-31 19:51:04 +0000832 typedefString.c_str(), typedefString.size());
Chris Lattnerf04da132007-10-24 17:06:59 +0000833}
834
Steve Naroffb29b4272008-04-14 22:03:09 +0000835void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
Fariborz Jahaniand0502402010-01-21 17:36:00 +0000836 // When method is a synthesized one, such as a getter/setter there is
837 // nothing to rewrite.
838 if (Method->isSynthesized())
839 return;
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000840 SourceLocation LocStart = Method->getLocStart();
841 SourceLocation LocEnd = Method->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +0000842
Chris Lattner30fc9332009-02-04 01:06:56 +0000843 if (SM->getInstantiationLineNumber(LocEnd) >
844 SM->getInstantiationLineNumber(LocStart)) {
Steve Naroff94ac21e2008-10-21 13:37:27 +0000845 InsertText(LocStart, "#if 0\n", 6);
846 ReplaceText(LocEnd, 1, ";\n#endif\n", 9);
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000847 } else {
Chris Lattnerf3dd57e2008-01-31 19:42:41 +0000848 InsertText(LocStart, "// ", 3);
Steve Naroff423cb562007-10-30 13:30:57 +0000849 }
850}
851
Mike Stump1eb44332009-09-09 15:08:12 +0000852void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop) {
Fariborz Jahaniand0502402010-01-21 17:36:00 +0000853 SourceLocation Loc = prop->getAtLoc();
Mike Stump1eb44332009-09-09 15:08:12 +0000854
Steve Naroff6327e0d2009-01-11 01:06:09 +0000855 ReplaceText(Loc, 0, "// ", 3);
Steve Naroff6327e0d2009-01-11 01:06:09 +0000856 // FIXME: handle properties that are declared across multiple lines.
Fariborz Jahanian957cf652007-11-07 00:09:37 +0000857}
858
Steve Naroffb29b4272008-04-14 22:03:09 +0000859void RewriteObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
Steve Naroff423cb562007-10-30 13:30:57 +0000860 SourceLocation LocStart = CatDecl->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +0000861
Steve Naroff423cb562007-10-30 13:30:57 +0000862 // FIXME: handle category headers that are declared across multiple lines.
Chris Lattneraadaf782008-01-31 19:51:04 +0000863 ReplaceText(LocStart, 0, "// ", 3);
Mike Stump1eb44332009-09-09 15:08:12 +0000864
865 for (ObjCCategoryDecl::instmeth_iterator
866 I = CatDecl->instmeth_begin(), E = CatDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000867 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000868 RewriteMethodDeclaration(*I);
Mike Stump1eb44332009-09-09 15:08:12 +0000869 for (ObjCCategoryDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000870 I = CatDecl->classmeth_begin(), E = CatDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000871 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000872 RewriteMethodDeclaration(*I);
873
Steve Naroff423cb562007-10-30 13:30:57 +0000874 // Lastly, comment out the @end.
Ted Kremenek782f2f52010-01-07 01:20:12 +0000875 ReplaceText(CatDecl->getAtEndRange().getBegin(), 0, "// ", 3);
Steve Naroff423cb562007-10-30 13:30:57 +0000876}
877
Steve Naroffb29b4272008-04-14 22:03:09 +0000878void RewriteObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000879 std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
Mike Stump1eb44332009-09-09 15:08:12 +0000880
Steve Naroff752d6ef2007-10-30 16:42:30 +0000881 SourceLocation LocStart = PDecl->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +0000882
Steve Naroff752d6ef2007-10-30 16:42:30 +0000883 // FIXME: handle protocol headers that are declared across multiple lines.
Chris Lattneraadaf782008-01-31 19:51:04 +0000884 ReplaceText(LocStart, 0, "// ", 3);
Mike Stump1eb44332009-09-09 15:08:12 +0000885
886 for (ObjCProtocolDecl::instmeth_iterator
887 I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000888 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000889 RewriteMethodDeclaration(*I);
Douglas Gregor6ab35242009-04-09 21:40:53 +0000890 for (ObjCProtocolDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +0000891 I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +0000892 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +0000893 RewriteMethodDeclaration(*I);
894
Steve Naroff752d6ef2007-10-30 16:42:30 +0000895 // Lastly, comment out the @end.
Ted Kremenek782f2f52010-01-07 01:20:12 +0000896 SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
Chris Lattneraadaf782008-01-31 19:51:04 +0000897 ReplaceText(LocEnd, 0, "// ", 3);
Steve Naroff8cc764c2007-11-14 15:03:57 +0000898
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000899 // Must comment out @optional/@required
900 const char *startBuf = SM->getCharacterData(LocStart);
901 const char *endBuf = SM->getCharacterData(LocEnd);
902 for (const char *p = startBuf; p < endBuf; p++) {
903 if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
904 std::string CommentedOptional = "/* @optional */";
Steve Naroff8cc764c2007-11-14 15:03:57 +0000905 SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
Chris Lattneraadaf782008-01-31 19:51:04 +0000906 ReplaceText(OptionalLoc, strlen("@optional"),
907 CommentedOptional.c_str(), CommentedOptional.size());
Mike Stump1eb44332009-09-09 15:08:12 +0000908
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000909 }
910 else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
911 std::string CommentedRequired = "/* @required */";
Steve Naroff8cc764c2007-11-14 15:03:57 +0000912 SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
Chris Lattneraadaf782008-01-31 19:51:04 +0000913 ReplaceText(OptionalLoc, strlen("@required"),
914 CommentedRequired.c_str(), CommentedRequired.size());
Mike Stump1eb44332009-09-09 15:08:12 +0000915
Fariborz Jahanianb82b3ea2007-11-14 01:37:46 +0000916 }
917 }
Steve Naroff752d6ef2007-10-30 16:42:30 +0000918}
919
Steve Naroffb29b4272008-04-14 22:03:09 +0000920void RewriteObjC::RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *PDecl) {
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000921 SourceLocation LocStart = PDecl->getLocation();
Steve Naroffb7fa9922007-11-14 03:37:28 +0000922 if (LocStart.isInvalid())
923 assert(false && "Invalid SourceLocation");
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000924 // FIXME: handle forward protocol that are declared across multiple lines.
Chris Lattneraadaf782008-01-31 19:51:04 +0000925 ReplaceText(LocStart, 0, "// ", 3);
Fariborz Jahaniand175ddf2007-11-14 00:42:16 +0000926}
927
Mike Stump1eb44332009-09-09 15:08:12 +0000928void RewriteObjC::RewriteObjCMethodDecl(ObjCMethodDecl *OMD,
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000929 std::string &ResultStr) {
Steve Naroffced80a82008-10-30 12:09:33 +0000930 //fprintf(stderr,"In RewriteObjCMethodDecl\n");
Steve Naroff76e429d2008-07-16 14:40:40 +0000931 const FunctionType *FPRetType = 0;
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000932 ResultStr += "\nstatic ";
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000933 if (OMD->getResultType()->isObjCQualifiedIdType())
Fariborz Jahanianc5692492007-12-17 21:03:50 +0000934 ResultStr += "id";
Steve Narofff4312dc2008-12-11 19:29:16 +0000935 else if (OMD->getResultType()->isFunctionPointerType() ||
936 OMD->getResultType()->isBlockPointerType()) {
Steve Naroff76e429d2008-07-16 14:40:40 +0000937 // needs special handling, since pointer-to-functions have special
938 // syntax (where a decaration models use).
939 QualType retType = OMD->getResultType();
Steve Narofff4312dc2008-12-11 19:29:16 +0000940 QualType PointeeTy;
Ted Kremenek6217b802009-07-29 21:53:49 +0000941 if (const PointerType* PT = retType->getAs<PointerType>())
Steve Narofff4312dc2008-12-11 19:29:16 +0000942 PointeeTy = PT->getPointeeType();
Ted Kremenek6217b802009-07-29 21:53:49 +0000943 else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
Steve Narofff4312dc2008-12-11 19:29:16 +0000944 PointeeTy = BPT->getPointeeType();
John McCall183700f2009-09-21 23:43:11 +0000945 if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
Steve Narofff4312dc2008-12-11 19:29:16 +0000946 ResultStr += FPRetType->getResultType().getAsString();
947 ResultStr += "(*";
Steve Naroff76e429d2008-07-16 14:40:40 +0000948 }
949 } else
Fariborz Jahanianc5692492007-12-17 21:03:50 +0000950 ResultStr += OMD->getResultType().getAsString();
Fariborz Jahanian531a1ea2008-01-10 01:39:52 +0000951 ResultStr += " ";
Mike Stump1eb44332009-09-09 15:08:12 +0000952
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000953 // Unique method name
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000954 std::string NameStr;
Mike Stump1eb44332009-09-09 15:08:12 +0000955
Douglas Gregorf8d49f62009-01-09 17:18:27 +0000956 if (OMD->isInstanceMethod())
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000957 NameStr += "_I_";
958 else
959 NameStr += "_C_";
Mike Stump1eb44332009-09-09 15:08:12 +0000960
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000961 NameStr += OMD->getClassInterface()->getNameAsString();
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000962 NameStr += "_";
Mike Stump1eb44332009-09-09 15:08:12 +0000963
964 if (ObjCCategoryImplDecl *CID =
Steve Naroff3e0a5402009-01-08 19:41:02 +0000965 dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000966 NameStr += CID->getNameAsString();
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000967 NameStr += "_";
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000968 }
Mike Stump1eb44332009-09-09 15:08:12 +0000969 // Append selector names, replacing ':' with '_'
Chris Lattner077bf5e2008-11-24 03:33:13 +0000970 {
971 std::string selString = OMD->getSelector().getAsString();
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000972 int len = selString.size();
973 for (int i = 0; i < len; i++)
974 if (selString[i] == ':')
975 selString[i] = '_';
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000976 NameStr += selString;
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000977 }
Fariborz Jahanianb7908b52007-11-13 21:02:00 +0000978 // Remember this name for metadata emission
979 MethodInternalNames[OMD] = NameStr;
980 ResultStr += NameStr;
Mike Stump1eb44332009-09-09 15:08:12 +0000981
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000982 // Rewrite arguments
983 ResultStr += "(";
Mike Stump1eb44332009-09-09 15:08:12 +0000984
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000985 // invisible arguments
Douglas Gregorf8d49f62009-01-09 17:18:27 +0000986 if (OMD->isInstanceMethod()) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +0000987 QualType selfTy = Context->getObjCInterfaceType(OMD->getClassInterface());
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000988 selfTy = Context->getPointerType(selfTy);
Steve Naroff05b8c782008-03-12 00:25:36 +0000989 if (!LangOpts.Microsoft) {
990 if (ObjCSynthesizedStructs.count(OMD->getClassInterface()))
991 ResultStr += "struct ";
992 }
993 // When rewriting for Microsoft, explicitly omit the structure name.
Chris Lattnerd9d22dd2008-11-24 05:29:24 +0000994 ResultStr += OMD->getClassInterface()->getNameAsString();
Steve Naroff61ed9ca2008-03-10 23:16:54 +0000995 ResultStr += " *";
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +0000996 }
997 else
Steve Naroff621edce2009-04-29 16:37:50 +0000998 ResultStr += Context->getObjCClassType().getAsString();
Mike Stump1eb44332009-09-09 15:08:12 +0000999
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001000 ResultStr += " self, ";
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001001 ResultStr += Context->getObjCSelType().getAsString();
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001002 ResultStr += " _cmd";
Mike Stump1eb44332009-09-09 15:08:12 +00001003
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001004 // Method arguments.
Chris Lattner89951a82009-02-20 18:43:26 +00001005 for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
1006 E = OMD->param_end(); PI != E; ++PI) {
1007 ParmVarDecl *PDecl = *PI;
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001008 ResultStr += ", ";
Steve Naroff543409e2008-04-18 21:13:19 +00001009 if (PDecl->getType()->isObjCQualifiedIdType()) {
1010 ResultStr += "id ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001011 ResultStr += PDecl->getNameAsString();
Steve Naroff543409e2008-04-18 21:13:19 +00001012 } else {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001013 std::string Name = PDecl->getNameAsString();
Steve Naroff01f2ffa2008-12-11 21:05:33 +00001014 if (isTopLevelBlockPointerType(PDecl->getType())) {
Steve Naroffc8ad87b2008-10-30 14:45:29 +00001015 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Ted Kremenek6217b802009-07-29 21:53:49 +00001016 const BlockPointerType *BPT = PDecl->getType()->getAs<BlockPointerType>();
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00001017 Context->getPointerType(BPT->getPointeeType()).getAsStringInternal(Name,
1018 Context->PrintingPolicy);
Steve Naroffc8ad87b2008-10-30 14:45:29 +00001019 } else
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00001020 PDecl->getType().getAsStringInternal(Name, Context->PrintingPolicy);
Steve Naroff543409e2008-04-18 21:13:19 +00001021 ResultStr += Name;
1022 }
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001023 }
Fariborz Jahanian7c39ff72008-01-21 20:14:23 +00001024 if (OMD->isVariadic())
1025 ResultStr += ", ...";
Fariborz Jahanian531a1ea2008-01-10 01:39:52 +00001026 ResultStr += ") ";
Mike Stump1eb44332009-09-09 15:08:12 +00001027
Steve Naroff76e429d2008-07-16 14:40:40 +00001028 if (FPRetType) {
1029 ResultStr += ")"; // close the precedence "scope" for "*".
Mike Stump1eb44332009-09-09 15:08:12 +00001030
Steve Naroff76e429d2008-07-16 14:40:40 +00001031 // Now, emit the argument types (if any).
Douglas Gregor72564e72009-02-26 23:50:07 +00001032 if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
Steve Naroff76e429d2008-07-16 14:40:40 +00001033 ResultStr += "(";
1034 for (unsigned i = 0, e = FT->getNumArgs(); i != e; ++i) {
1035 if (i) ResultStr += ", ";
1036 std::string ParamStr = FT->getArgType(i).getAsString();
1037 ResultStr += ParamStr;
1038 }
1039 if (FT->isVariadic()) {
1040 if (FT->getNumArgs()) ResultStr += ", ";
1041 ResultStr += "...";
1042 }
1043 ResultStr += ")";
1044 } else {
1045 ResultStr += "()";
1046 }
1047 }
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001048}
Douglas Gregor4afa39d2009-01-20 01:17:11 +00001049void RewriteObjC::RewriteImplementationDecl(Decl *OID) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001050 ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
1051 ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
Mike Stump1eb44332009-09-09 15:08:12 +00001052
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00001053 if (IMD)
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001054 InsertText(IMD->getLocStart(), "// ", 3);
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00001055 else
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001056 InsertText(CID->getLocStart(), "// ", 3);
Mike Stump1eb44332009-09-09 15:08:12 +00001057
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001058 for (ObjCCategoryImplDecl::instmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001059 I = IMD ? IMD->instmeth_begin() : CID->instmeth_begin(),
1060 E = IMD ? IMD->instmeth_end() : CID->instmeth_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001061 I != E; ++I) {
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001062 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001063 ObjCMethodDecl *OMD = *I;
1064 RewriteObjCMethodDecl(OMD, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001065 SourceLocation LocStart = OMD->getLocStart();
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00001066 SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
Sebastian Redld3a413d2009-04-26 20:35:05 +00001067
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001068 const char *startBuf = SM->getCharacterData(LocStart);
1069 const char *endBuf = SM->getCharacterData(LocEnd);
Chris Lattneraadaf782008-01-31 19:51:04 +00001070 ReplaceText(LocStart, endBuf-startBuf,
1071 ResultStr.c_str(), ResultStr.size());
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001072 }
Mike Stump1eb44332009-09-09 15:08:12 +00001073
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001074 for (ObjCCategoryImplDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001075 I = IMD ? IMD->classmeth_begin() : CID->classmeth_begin(),
1076 E = IMD ? IMD->classmeth_end() : CID->classmeth_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001077 I != E; ++I) {
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001078 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001079 ObjCMethodDecl *OMD = *I;
1080 RewriteObjCMethodDecl(OMD, ResultStr);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001081 SourceLocation LocStart = OMD->getLocStart();
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00001082 SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
Mike Stump1eb44332009-09-09 15:08:12 +00001083
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001084 const char *startBuf = SM->getCharacterData(LocStart);
1085 const char *endBuf = SM->getCharacterData(LocEnd);
Chris Lattneraadaf782008-01-31 19:51:04 +00001086 ReplaceText(LocStart, endBuf-startBuf,
Mike Stump1eb44332009-09-09 15:08:12 +00001087 ResultStr.c_str(), ResultStr.size());
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001088 }
Steve Naroffd40910b2008-12-01 20:33:01 +00001089 for (ObjCCategoryImplDecl::propimpl_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001090 I = IMD ? IMD->propimpl_begin() : CID->propimpl_begin(),
Mike Stump1eb44332009-09-09 15:08:12 +00001091 E = IMD ? IMD->propimpl_end() : CID->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00001092 I != E; ++I) {
Steve Naroffa0876e82008-12-02 17:36:43 +00001093 RewritePropertyImplDecl(*I, IMD, CID);
Steve Naroffd40910b2008-12-01 20:33:01 +00001094 }
1095
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00001096 if (IMD)
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001097 InsertText(IMD->getLocEnd(), "// ", 3);
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00001098 else
Mike Stump1eb44332009-09-09 15:08:12 +00001099 InsertText(CID->getLocEnd(), "// ", 3);
Fariborz Jahanian48a0b6a2007-11-13 18:44:14 +00001100}
1101
Steve Naroffb29b4272008-04-14 22:03:09 +00001102void RewriteObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
Steve Narofff908a872007-10-30 02:23:23 +00001103 std::string ResultStr;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001104 if (!ObjCForwardDecls.count(ClassDecl)) {
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001105 // we haven't seen a forward decl - generate a typedef.
Steve Naroff5086a8d2007-11-14 23:02:56 +00001106 ResultStr = "#ifndef _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001107 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001108 ResultStr += "\n";
1109 ResultStr += "#define _REWRITER_typedef_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001110 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001111 ResultStr += "\n";
Steve Naroff61ed9ca2008-03-10 23:16:54 +00001112 ResultStr += "typedef struct objc_object ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001113 ResultStr += ClassDecl->getNameAsString();
Steve Naroff32174822007-11-09 12:50:28 +00001114 ResultStr += ";\n#endif\n";
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001115 // Mark this typedef as having been generated.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001116 ObjCForwardDecls.insert(ClassDecl);
Steve Naroff6c6a2db2007-11-01 03:35:41 +00001117 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001118 SynthesizeObjCInternalStruct(ClassDecl, ResultStr);
Mike Stump1eb44332009-09-09 15:08:12 +00001119
1120 for (ObjCInterfaceDecl::prop_iterator I = ClassDecl->prop_begin(),
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001121 E = ClassDecl->prop_end(); I != E; ++I)
Steve Naroff6327e0d2009-01-11 01:06:09 +00001122 RewriteProperty(*I);
Mike Stump1eb44332009-09-09 15:08:12 +00001123 for (ObjCInterfaceDecl::instmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00001124 I = ClassDecl->instmeth_begin(), E = ClassDecl->instmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +00001125 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +00001126 RewriteMethodDeclaration(*I);
Mike Stump1eb44332009-09-09 15:08:12 +00001127 for (ObjCInterfaceDecl::classmeth_iterator
1128 I = ClassDecl->classmeth_begin(), E = ClassDecl->classmeth_end();
Douglas Gregor6ab35242009-04-09 21:40:53 +00001129 I != E; ++I)
Steve Naroff58dbdeb2007-12-14 23:37:57 +00001130 RewriteMethodDeclaration(*I);
1131
Steve Naroff2feac5e2007-10-30 03:43:13 +00001132 // Lastly, comment out the @end.
Ted Kremenek782f2f52010-01-07 01:20:12 +00001133 ReplaceText(ClassDecl->getAtEndRange().getBegin(), 0, "// ", 3);
Steve Naroffbef11852007-10-26 20:53:56 +00001134}
1135
Steve Naroffb619d952008-12-09 12:56:34 +00001136Stmt *RewriteObjC::RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
1137 SourceRange SrcRange) {
Steve Naroffc77a6362008-12-04 16:24:46 +00001138 // Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
1139 // This allows us to reuse all the fun and games in SynthMessageExpr().
1140 ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS());
1141 ObjCMessageExpr *MsgExpr;
1142 ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
1143 llvm::SmallVector<Expr *, 1> ExprVec;
1144 ExprVec.push_back(newStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00001145
Steve Naroff8599e7a2008-12-08 16:43:47 +00001146 Stmt *Receiver = PropRefExpr->getBase();
1147 ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
1148 if (PRE && PropGetters[PRE]) {
1149 // This allows us to handle chain/nested property getters.
1150 Receiver = PropGetters[PRE];
1151 }
Mike Stump1eb44332009-09-09 15:08:12 +00001152 MsgExpr = new (Context) ObjCMessageExpr(dyn_cast<Expr>(Receiver),
1153 PDecl->getSetterName(), PDecl->getType(),
1154 PDecl->getSetterMethodDecl(),
1155 SourceLocation(), SourceLocation(),
Steve Naroffc77a6362008-12-04 16:24:46 +00001156 &ExprVec[0], 1);
1157 Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
Mike Stump1eb44332009-09-09 15:08:12 +00001158
Steve Naroffc77a6362008-12-04 16:24:46 +00001159 // Now do the actual rewrite.
Steve Naroffb619d952008-12-09 12:56:34 +00001160 ReplaceStmtWithRange(BinOp, ReplacingStmt, SrcRange);
Steve Naroffe58ee0c2008-12-10 14:53:27 +00001161 //delete BinOp;
Ted Kremenek8189cde2009-02-07 01:47:29 +00001162 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1163 // to things that stay around.
1164 Context->Deallocate(MsgExpr);
Steve Naroffc77a6362008-12-04 16:24:46 +00001165 return ReplacingStmt;
Steve Naroff15f081d2008-12-03 00:56:33 +00001166}
1167
Steve Naroffc77a6362008-12-04 16:24:46 +00001168Stmt *RewriteObjC::RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr) {
Steve Naroff15f081d2008-12-03 00:56:33 +00001169 // Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
1170 // This allows us to reuse all the fun and games in SynthMessageExpr().
1171 ObjCMessageExpr *MsgExpr;
1172 ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
Mike Stump1eb44332009-09-09 15:08:12 +00001173
Steve Naroff8599e7a2008-12-08 16:43:47 +00001174 Stmt *Receiver = PropRefExpr->getBase();
Mike Stump1eb44332009-09-09 15:08:12 +00001175
Steve Naroff8599e7a2008-12-08 16:43:47 +00001176 ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
1177 if (PRE && PropGetters[PRE]) {
1178 // This allows us to handle chain/nested property getters.
1179 Receiver = PropGetters[PRE];
1180 }
Mike Stump1eb44332009-09-09 15:08:12 +00001181 MsgExpr = new (Context) ObjCMessageExpr(dyn_cast<Expr>(Receiver),
1182 PDecl->getGetterName(), PDecl->getType(),
1183 PDecl->getGetterMethodDecl(),
1184 SourceLocation(), SourceLocation(),
Steve Naroff15f081d2008-12-03 00:56:33 +00001185 0, 0);
1186
Steve Naroff4c3580e2008-12-04 23:50:32 +00001187 Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001188
1189 if (!PropParentMap)
1190 PropParentMap = new ParentMap(CurrentBody);
1191
1192 Stmt *Parent = PropParentMap->getParent(PropRefExpr);
1193 if (Parent && isa<ObjCPropertyRefExpr>(Parent)) {
1194 // We stash away the ReplacingStmt since actually doing the
1195 // replacement/rewrite won't work for nested getters (e.g. obj.p.i)
1196 PropGetters[PropRefExpr] = ReplacingStmt;
Ted Kremenek8189cde2009-02-07 01:47:29 +00001197 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1198 // to things that stay around.
1199 Context->Deallocate(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001200 return PropRefExpr; // return the original...
1201 } else {
1202 ReplaceStmt(PropRefExpr, ReplacingStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00001203 // delete PropRefExpr; elsewhere...
Ted Kremenek8189cde2009-02-07 01:47:29 +00001204 // NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
1205 // to things that stay around.
1206 Context->Deallocate(MsgExpr);
Steve Naroff8599e7a2008-12-08 16:43:47 +00001207 return ReplacingStmt;
1208 }
Steve Naroff15f081d2008-12-03 00:56:33 +00001209}
1210
Mike Stump1eb44332009-09-09 15:08:12 +00001211Stmt *RewriteObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV,
Chris Lattner3b2c58c2008-05-23 20:40:52 +00001212 SourceLocation OrigStart) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001213 ObjCIvarDecl *D = IV->getDecl();
Fariborz Jahanian84ed6002010-01-07 18:18:32 +00001214 const Expr *BaseExpr = IV->getBase();
Steve Naroff54055232008-10-27 17:20:55 +00001215 if (CurMethodDef) {
Fariborz Jahanian8f095432010-01-26 18:28:51 +00001216 if (BaseExpr->getType()->isObjCObjectPointerType()) {
Ted Kremenek8189cde2009-02-07 01:47:29 +00001217 ObjCInterfaceType *iFaceDecl =
Fariborz Jahanian84ed6002010-01-07 18:18:32 +00001218 dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
Fariborz Jahanianffbdead2010-01-26 20:37:44 +00001219 assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null");
Steve Narofff0757612008-05-08 17:52:16 +00001220 // lookup which class implements the instance variable.
1221 ObjCInterfaceDecl *clsDeclared = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00001222 iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
Douglas Gregor6ab35242009-04-09 21:40:53 +00001223 clsDeclared);
Steve Narofff0757612008-05-08 17:52:16 +00001224 assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
Mike Stump1eb44332009-09-09 15:08:12 +00001225
Steve Narofff0757612008-05-08 17:52:16 +00001226 // Synthesize an explicit cast to gain access to the ivar.
1227 std::string RecName = clsDeclared->getIdentifier()->getName();
1228 RecName += "_IMPL";
1229 IdentifierInfo *II = &Context->Idents.get(RecName.c_str());
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00001230 RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Ted Kremenekdf042e62008-09-05 01:34:33 +00001231 SourceLocation(), II);
Steve Narofff0757612008-05-08 17:52:16 +00001232 assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
1233 QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
John McCall9d125032010-01-15 18:39:57 +00001234 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
1235 CastExpr::CK_Unknown,
1236 IV->getBase());
Steve Narofff0757612008-05-08 17:52:16 +00001237 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00001238 ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
1239 IV->getBase()->getLocEnd(),
1240 castExpr);
Mike Stump1eb44332009-09-09 15:08:12 +00001241 if (IV->isFreeIvar() &&
Steve Naroff54055232008-10-27 17:20:55 +00001242 CurMethodDef->getClassInterface() == iFaceDecl->getDecl()) {
Ted Kremenek8189cde2009-02-07 01:47:29 +00001243 MemberExpr *ME = new (Context) MemberExpr(PE, true, D,
1244 IV->getLocation(),
1245 D->getType());
Steve Narofff0757612008-05-08 17:52:16 +00001246 ReplaceStmt(IV, ME);
Steve Naroff4c3580e2008-12-04 23:50:32 +00001247 // delete IV; leak for now, see RewritePropertySetter() usage for more info.
Steve Narofff0757612008-05-08 17:52:16 +00001248 return ME;
Steve Naroffc2a689b2007-11-15 11:33:00 +00001249 }
Fariborz Jahanian7e20ffe2010-01-28 01:41:20 +00001250 // Get the old text, only to get its size.
1251 std::string SStr;
1252 llvm::raw_string_ostream S(SStr);
1253 IV->getBase()->printPretty(S, *Context, 0, PrintingPolicy(LangOpts));
1254 // Get the new text
1255 ReplaceStmt(IV->getBase(), PE, S.str().size());
Chris Lattner3b2c58c2008-05-23 20:40:52 +00001256 // Cannot delete IV->getBase(), since PE points to it.
1257 // Replace the old base with the cast. This is important when doing
1258 // embedded rewrites. For example, [newInv->_container addObject:0].
Mike Stump1eb44332009-09-09 15:08:12 +00001259 IV->setBase(PE);
Chris Lattner3b2c58c2008-05-23 20:40:52 +00001260 return IV;
Steve Naroffc2a689b2007-11-15 11:33:00 +00001261 }
Steve Naroff84472a82008-04-18 21:55:08 +00001262 } else { // we are outside a method.
Steve Naroff9f525972008-05-06 23:20:07 +00001263 assert(!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method");
Mike Stump1eb44332009-09-09 15:08:12 +00001264
Steve Naroff9f525972008-05-06 23:20:07 +00001265 // Explicit ivar refs need to have a cast inserted.
1266 // FIXME: consider sharing some of this code with the code above.
Fariborz Jahanian26337b22010-01-12 17:31:23 +00001267 if (BaseExpr->getType()->isObjCObjectPointerType()) {
Fariborz Jahanianc374cd92010-01-11 17:50:35 +00001268 ObjCInterfaceType *iFaceDecl =
1269 dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
Steve Naroff9f525972008-05-06 23:20:07 +00001270 // lookup which class implements the instance variable.
1271 ObjCInterfaceDecl *clsDeclared = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00001272 iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
Douglas Gregor6ab35242009-04-09 21:40:53 +00001273 clsDeclared);
Steve Naroff9f525972008-05-06 23:20:07 +00001274 assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
Mike Stump1eb44332009-09-09 15:08:12 +00001275
Steve Naroff9f525972008-05-06 23:20:07 +00001276 // Synthesize an explicit cast to gain access to the ivar.
1277 std::string RecName = clsDeclared->getIdentifier()->getName();
1278 RecName += "_IMPL";
1279 IdentifierInfo *II = &Context->Idents.get(RecName.c_str());
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00001280 RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Ted Kremenekdf042e62008-09-05 01:34:33 +00001281 SourceLocation(), II);
Steve Naroff9f525972008-05-06 23:20:07 +00001282 assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
1283 QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
John McCall9d125032010-01-15 18:39:57 +00001284 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
1285 CastExpr::CK_Unknown,
1286 IV->getBase());
Steve Naroff9f525972008-05-06 23:20:07 +00001287 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00001288 ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
Chris Lattner8d366162008-05-28 16:38:23 +00001289 IV->getBase()->getLocEnd(), castExpr);
Steve Naroff9f525972008-05-06 23:20:07 +00001290 ReplaceStmt(IV->getBase(), PE);
1291 // Cannot delete IV->getBase(), since PE points to it.
1292 // Replace the old base with the cast. This is important when doing
1293 // embedded rewrites. For example, [newInv->_container addObject:0].
Mike Stump1eb44332009-09-09 15:08:12 +00001294 IV->setBase(PE);
Steve Naroff9f525972008-05-06 23:20:07 +00001295 return IV;
1296 }
Steve Naroffc2a689b2007-11-15 11:33:00 +00001297 }
Steve Naroff84472a82008-04-18 21:55:08 +00001298 return IV;
Steve Naroff7e3411b2007-11-15 02:58:25 +00001299}
1300
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001301/// SynthCountByEnumWithState - To print:
1302/// ((unsigned int (*)
1303/// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
Mike Stump1eb44332009-09-09 15:08:12 +00001304/// (void *)objc_msgSend)((id)l_collection,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001305/// sel_registerName(
Mike Stump1eb44332009-09-09 15:08:12 +00001306/// "countByEnumeratingWithState:objects:count:"),
1307/// &enumState,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001308/// (id *)items, (unsigned int)16)
1309///
Steve Naroffb29b4272008-04-14 22:03:09 +00001310void RewriteObjC::SynthCountByEnumWithState(std::string &buf) {
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001311 buf += "((unsigned int (*) (id, SEL, struct __objcFastEnumerationState *, "
1312 "id *, unsigned int))(void *)objc_msgSend)";
1313 buf += "\n\t\t";
1314 buf += "((id)l_collection,\n\t\t";
1315 buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
1316 buf += "\n\t\t";
1317 buf += "&enumState, "
1318 "(id *)items, (unsigned int)16)";
1319}
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001320
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001321/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
1322/// statement to exit to its outer synthesized loop.
1323///
Steve Naroffb29b4272008-04-14 22:03:09 +00001324Stmt *RewriteObjC::RewriteBreakStmt(BreakStmt *S) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001325 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
1326 return S;
1327 // replace break with goto __break_label
1328 std::string buf;
Mike Stump1eb44332009-09-09 15:08:12 +00001329
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001330 SourceLocation startLoc = S->getLocStart();
1331 buf = "goto __break_label_";
1332 buf += utostr(ObjCBcLabelNo.back());
Chris Lattneraadaf782008-01-31 19:51:04 +00001333 ReplaceText(startLoc, strlen("break"), buf.c_str(), buf.size());
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001334
1335 return 0;
1336}
1337
1338/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
1339/// statement to continue with its inner synthesized loop.
1340///
Steve Naroffb29b4272008-04-14 22:03:09 +00001341Stmt *RewriteObjC::RewriteContinueStmt(ContinueStmt *S) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001342 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
1343 return S;
1344 // replace continue with goto __continue_label
1345 std::string buf;
Mike Stump1eb44332009-09-09 15:08:12 +00001346
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001347 SourceLocation startLoc = S->getLocStart();
1348 buf = "goto __continue_label_";
1349 buf += utostr(ObjCBcLabelNo.back());
Chris Lattneraadaf782008-01-31 19:51:04 +00001350 ReplaceText(startLoc, strlen("continue"), buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001351
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001352 return 0;
1353}
1354
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001355/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001356/// It rewrites:
1357/// for ( type elem in collection) { stmts; }
Mike Stump1eb44332009-09-09 15:08:12 +00001358
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001359/// Into:
1360/// {
Mike Stump1eb44332009-09-09 15:08:12 +00001361/// type elem;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001362/// struct __objcFastEnumerationState enumState = { 0 };
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001363/// id items[16];
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001364/// id l_collection = (id)collection;
Mike Stump1eb44332009-09-09 15:08:12 +00001365/// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001366/// objects:items count:16];
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001367/// if (limit) {
1368/// unsigned long startMutations = *enumState.mutationsPtr;
1369/// do {
1370/// unsigned long counter = 0;
1371/// do {
Mike Stump1eb44332009-09-09 15:08:12 +00001372/// if (startMutations != *enumState.mutationsPtr)
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001373/// objc_enumerationMutation(l_collection);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001374/// elem = (type)enumState.itemsPtr[counter++];
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001375/// stmts;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001376/// __continue_label: ;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001377/// } while (counter < limit);
Mike Stump1eb44332009-09-09 15:08:12 +00001378/// } while (limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001379/// objects:items count:16]);
1380/// elem = nil;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001381/// __break_label: ;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001382/// }
1383/// else
1384/// elem = nil;
1385/// }
1386///
Steve Naroffb29b4272008-04-14 22:03:09 +00001387Stmt *RewriteObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
Chris Lattner338d1e22008-01-31 05:10:40 +00001388 SourceLocation OrigEnd) {
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001389 assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty");
Mike Stump1eb44332009-09-09 15:08:12 +00001390 assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001391 "ObjCForCollectionStmt Statement stack mismatch");
Mike Stump1eb44332009-09-09 15:08:12 +00001392 assert(!ObjCBcLabelNo.empty() &&
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001393 "ObjCForCollectionStmt - Label No stack empty");
Mike Stump1eb44332009-09-09 15:08:12 +00001394
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001395 SourceLocation startLoc = S->getLocStart();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001396 const char *startBuf = SM->getCharacterData(startLoc);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001397 const char *elementName;
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001398 std::string elementTypeAsString;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001399 std::string buf;
1400 buf = "\n{\n\t";
1401 if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
1402 // type elem;
Chris Lattner7e24e822009-03-28 06:33:19 +00001403 NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
Ted Kremenek1ed8e2a2008-10-06 22:16:13 +00001404 QualType ElementType = cast<ValueDecl>(D)->getType();
Steve Naroffe89b8e72009-12-04 21:18:19 +00001405 if (ElementType->isObjCQualifiedIdType() ||
1406 ElementType->isObjCQualifiedInterfaceType())
1407 // Simply use 'id' for all qualified types.
1408 elementTypeAsString = "id";
1409 else
1410 elementTypeAsString = ElementType.getAsString();
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001411 buf += elementTypeAsString;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001412 buf += " ";
Chris Lattner8ec03f52008-11-24 03:54:41 +00001413 elementName = D->getNameAsCString();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001414 buf += elementName;
1415 buf += ";\n\t";
1416 }
Chris Lattner06767512008-04-08 05:52:18 +00001417 else {
1418 DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
Chris Lattner8ec03f52008-11-24 03:54:41 +00001419 elementName = DR->getDecl()->getNameAsCString();
Steve Naroffe89b8e72009-12-04 21:18:19 +00001420 ValueDecl *VD = cast<ValueDecl>(DR->getDecl());
1421 if (VD->getType()->isObjCQualifiedIdType() ||
1422 VD->getType()->isObjCQualifiedInterfaceType())
1423 // Simply use 'id' for all qualified types.
1424 elementTypeAsString = "id";
1425 else
1426 elementTypeAsString = VD->getType().getAsString();
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001427 }
Mike Stump1eb44332009-09-09 15:08:12 +00001428
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001429 // struct __objcFastEnumerationState enumState = { 0 };
1430 buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
1431 // id items[16];
1432 buf += "id items[16];\n\t";
1433 // id l_collection = (id)
1434 buf += "id l_collection = (id)";
Fariborz Jahanian75712282008-01-10 00:24:29 +00001435 // Find start location of 'collection' the hard way!
1436 const char *startCollectionBuf = startBuf;
1437 startCollectionBuf += 3; // skip 'for'
1438 startCollectionBuf = strchr(startCollectionBuf, '(');
1439 startCollectionBuf++; // skip '('
1440 // find 'in' and skip it.
1441 while (*startCollectionBuf != ' ' ||
1442 *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
1443 (*(startCollectionBuf+3) != ' ' &&
1444 *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
1445 startCollectionBuf++;
1446 startCollectionBuf += 3;
Mike Stump1eb44332009-09-09 15:08:12 +00001447
1448 // Replace: "for (type element in" with string constructed thus far.
Chris Lattneraadaf782008-01-31 19:51:04 +00001449 ReplaceText(startLoc, startCollectionBuf - startBuf,
1450 buf.c_str(), buf.size());
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001451 // Replace ')' in for '(' type elem in collection ')' with ';'
Fariborz Jahanian75712282008-01-10 00:24:29 +00001452 SourceLocation rightParenLoc = S->getRParenLoc();
1453 const char *rparenBuf = SM->getCharacterData(rightParenLoc);
1454 SourceLocation lparenLoc = startLoc.getFileLocWithOffset(rparenBuf-startBuf);
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001455 buf = ";\n\t";
Mike Stump1eb44332009-09-09 15:08:12 +00001456
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001457 // unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
1458 // objects:items count:16];
1459 // which is synthesized into:
Mike Stump1eb44332009-09-09 15:08:12 +00001460 // unsigned int limit =
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001461 // ((unsigned int (*)
1462 // (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
Mike Stump1eb44332009-09-09 15:08:12 +00001463 // (void *)objc_msgSend)((id)l_collection,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001464 // sel_registerName(
Mike Stump1eb44332009-09-09 15:08:12 +00001465 // "countByEnumeratingWithState:objects:count:"),
1466 // (struct __objcFastEnumerationState *)&state,
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001467 // (id *)items, (unsigned int)16);
1468 buf += "unsigned long limit =\n\t\t";
1469 SynthCountByEnumWithState(buf);
1470 buf += ";\n\t";
1471 /// if (limit) {
1472 /// unsigned long startMutations = *enumState.mutationsPtr;
1473 /// do {
1474 /// unsigned long counter = 0;
1475 /// do {
Mike Stump1eb44332009-09-09 15:08:12 +00001476 /// if (startMutations != *enumState.mutationsPtr)
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001477 /// objc_enumerationMutation(l_collection);
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001478 /// elem = (type)enumState.itemsPtr[counter++];
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001479 buf += "if (limit) {\n\t";
1480 buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
1481 buf += "do {\n\t\t";
1482 buf += "unsigned long counter = 0;\n\t\t";
1483 buf += "do {\n\t\t\t";
1484 buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
1485 buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
1486 buf += elementName;
Fariborz Jahanian88f50f32008-01-09 18:15:42 +00001487 buf += " = (";
1488 buf += elementTypeAsString;
1489 buf += ")enumState.itemsPtr[counter++];";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001490 // Replace ')' in for '(' type elem in collection ')' with all of these.
Chris Lattneraadaf782008-01-31 19:51:04 +00001491 ReplaceText(lparenLoc, 1, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001492
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001493 /// __continue_label: ;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001494 /// } while (counter < limit);
Mike Stump1eb44332009-09-09 15:08:12 +00001495 /// } while (limit = [l_collection countByEnumeratingWithState:&enumState
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001496 /// objects:items count:16]);
1497 /// elem = nil;
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001498 /// __break_label: ;
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001499 /// }
1500 /// else
1501 /// elem = nil;
1502 /// }
Mike Stump1eb44332009-09-09 15:08:12 +00001503 ///
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001504 buf = ";\n\t";
1505 buf += "__continue_label_";
1506 buf += utostr(ObjCBcLabelNo.back());
1507 buf += ": ;";
1508 buf += "\n\t\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001509 buf += "} while (counter < limit);\n\t";
1510 buf += "} while (limit = ";
1511 SynthCountByEnumWithState(buf);
1512 buf += ");\n\t";
1513 buf += elementName;
Fariborz Jahanian65b0aa52010-01-08 01:29:44 +00001514 buf += " = ((";
1515 buf += elementTypeAsString;
1516 buf += ")0);\n\t";
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001517 buf += "__break_label_";
1518 buf += utostr(ObjCBcLabelNo.back());
1519 buf += ": ;\n\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001520 buf += "}\n\t";
1521 buf += "else\n\t\t";
1522 buf += elementName;
Fariborz Jahanian65b0aa52010-01-08 01:29:44 +00001523 buf += " = ((";
1524 buf += elementTypeAsString;
1525 buf += ")0);\n\t";
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001526 buf += "}\n";
Mike Stump1eb44332009-09-09 15:08:12 +00001527
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001528 // Insert all these *after* the statement body.
Sebastian Redld3a413d2009-04-26 20:35:05 +00001529 // FIXME: If this should support Obj-C++, support CXXTryStmt
Steve Naroff600e4e82008-07-21 18:26:02 +00001530 if (isa<CompoundStmt>(S->getBody())) {
1531 SourceLocation endBodyLoc = OrigEnd.getFileLocWithOffset(1);
1532 InsertText(endBodyLoc, buf.c_str(), buf.size());
1533 } else {
1534 /* Need to treat single statements specially. For example:
1535 *
1536 * for (A *a in b) if (stuff()) break;
1537 * for (A *a in b) xxxyy;
1538 *
1539 * The following code simply scans ahead to the semi to find the actual end.
1540 */
1541 const char *stmtBuf = SM->getCharacterData(OrigEnd);
1542 const char *semiBuf = strchr(stmtBuf, ';');
1543 assert(semiBuf && "Can't find ';'");
1544 SourceLocation endBodyLoc = OrigEnd.getFileLocWithOffset(semiBuf-stmtBuf+1);
1545 InsertText(endBodyLoc, buf.c_str(), buf.size());
1546 }
Fariborz Jahaniane8d1c052008-01-15 23:58:23 +00001547 Stmts.pop_back();
1548 ObjCBcLabelNo.pop_back();
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00001549 return 0;
Fariborz Jahanian10d24f02008-01-07 21:40:22 +00001550}
1551
Mike Stump1eb44332009-09-09 15:08:12 +00001552/// RewriteObjCSynchronizedStmt -
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001553/// This routine rewrites @synchronized(expr) stmt;
1554/// into:
1555/// objc_sync_enter(expr);
1556/// @try stmt @finally { objc_sync_exit(expr); }
1557///
Steve Naroffb29b4272008-04-14 22:03:09 +00001558Stmt *RewriteObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001559 // Get the start location and compute the semi location.
1560 SourceLocation startLoc = S->getLocStart();
1561 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001562
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001563 assert((*startBuf == '@') && "bogus @synchronized location");
Mike Stump1eb44332009-09-09 15:08:12 +00001564
1565 std::string buf;
Steve Naroff3498cc92008-08-21 13:03:03 +00001566 buf = "objc_sync_enter((id)";
1567 const char *lparenBuf = startBuf;
1568 while (*lparenBuf != '(') lparenBuf++;
1569 ReplaceText(startLoc, lparenBuf-startBuf+1, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001570 // We can't use S->getSynchExpr()->getLocEnd() to find the end location, since
1571 // the sync expression is typically a message expression that's already
Steve Naroffc7089f12008-08-19 13:04:19 +00001572 // been rewritten! (which implies the SourceLocation's are invalid).
1573 SourceLocation endLoc = S->getSynchBody()->getLocStart();
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001574 const char *endBuf = SM->getCharacterData(endLoc);
Steve Naroffc7089f12008-08-19 13:04:19 +00001575 while (*endBuf != ')') endBuf--;
1576 SourceLocation rparenLoc = startLoc.getFileLocWithOffset(endBuf-startBuf);
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001577 buf = ");\n";
1578 // declare a new scope with two variables, _stack and _rethrow.
1579 buf += "/* @try scope begin */ \n{ struct _objc_exception_data {\n";
1580 buf += "int buf[18/*32-bit i386*/];\n";
1581 buf += "char *pointers[4];} _stack;\n";
1582 buf += "id volatile _rethrow = 0;\n";
1583 buf += "objc_exception_try_enter(&_stack);\n";
1584 buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
Chris Lattneraadaf782008-01-31 19:51:04 +00001585 ReplaceText(rparenLoc, 1, buf.c_str(), buf.size());
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001586 startLoc = S->getSynchBody()->getLocEnd();
1587 startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001588
Steve Naroffc7089f12008-08-19 13:04:19 +00001589 assert((*startBuf == '}') && "bogus @synchronized block");
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001590 SourceLocation lastCurlyLoc = startLoc;
1591 buf = "}\nelse {\n";
1592 buf += " _rethrow = objc_exception_extract(&_stack);\n";
Steve Naroff621edce2009-04-29 16:37:50 +00001593 buf += "}\n";
1594 buf += "{ /* implicit finally clause */\n";
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001595 buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
Steve Naroffb85e77a2009-12-05 21:43:12 +00001596
1597 std::string syncBuf;
1598 syncBuf += " objc_sync_exit(";
John McCall9d125032010-01-15 18:39:57 +00001599 Expr *syncExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
1600 CastExpr::CK_Unknown,
1601 S->getSynchExpr());
Ted Kremeneka95d3752008-09-13 05:16:45 +00001602 std::string syncExprBufS;
1603 llvm::raw_string_ostream syncExprBuf(syncExprBufS);
Chris Lattnere4f21422009-06-30 01:26:17 +00001604 syncExpr->printPretty(syncExprBuf, *Context, 0,
1605 PrintingPolicy(LangOpts));
Steve Naroffb85e77a2009-12-05 21:43:12 +00001606 syncBuf += syncExprBuf.str();
1607 syncBuf += ");";
1608
1609 buf += syncBuf;
1610 buf += "\n if (_rethrow) objc_exception_throw(_rethrow);\n";
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001611 buf += "}\n";
1612 buf += "}";
Mike Stump1eb44332009-09-09 15:08:12 +00001613
Chris Lattneraadaf782008-01-31 19:51:04 +00001614 ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
Steve Naroffb85e77a2009-12-05 21:43:12 +00001615
1616 bool hasReturns = false;
1617 HasReturnStmts(S->getSynchBody(), hasReturns);
1618 if (hasReturns)
1619 RewriteSyncReturnStmts(S->getSynchBody(), syncBuf);
1620
Fariborz Jahaniana0f55792008-01-29 22:59:37 +00001621 return 0;
1622}
1623
Steve Naroffb85e77a2009-12-05 21:43:12 +00001624void RewriteObjC::WarnAboutReturnGotoStmts(Stmt *S)
1625{
Steve Naroff8c565152008-12-05 17:03:39 +00001626 // Perform a bottom up traversal of all children.
1627 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1628 CI != E; ++CI)
1629 if (*CI)
Steve Naroffb85e77a2009-12-05 21:43:12 +00001630 WarnAboutReturnGotoStmts(*CI);
Steve Naroff8c565152008-12-05 17:03:39 +00001631
Steve Naroffb85e77a2009-12-05 21:43:12 +00001632 if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
Mike Stump1eb44332009-09-09 15:08:12 +00001633 Diags.Report(Context->getFullLoc(S->getLocStart()),
Steve Naroff8c565152008-12-05 17:03:39 +00001634 TryFinallyContainsReturnDiag);
1635 }
1636 return;
1637}
1638
Steve Naroffb85e77a2009-12-05 21:43:12 +00001639void RewriteObjC::HasReturnStmts(Stmt *S, bool &hasReturns)
1640{
1641 // Perform a bottom up traversal of all children.
1642 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1643 CI != E; ++CI)
1644 if (*CI)
1645 HasReturnStmts(*CI, hasReturns);
1646
1647 if (isa<ReturnStmt>(S))
1648 hasReturns = true;
1649 return;
1650}
1651
1652void RewriteObjC::RewriteTryReturnStmts(Stmt *S) {
1653 // Perform a bottom up traversal of all children.
1654 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1655 CI != E; ++CI)
1656 if (*CI) {
1657 RewriteTryReturnStmts(*CI);
1658 }
1659 if (isa<ReturnStmt>(S)) {
1660 SourceLocation startLoc = S->getLocStart();
1661 const char *startBuf = SM->getCharacterData(startLoc);
1662
1663 const char *semiBuf = strchr(startBuf, ';');
1664 assert((*semiBuf == ';') && "RewriteTryReturnStmts: can't find ';'");
1665 SourceLocation onePastSemiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
1666
1667 std::string buf;
1668 buf = "{ objc_exception_try_exit(&_stack); return";
1669
1670 ReplaceText(startLoc, 6, buf.c_str(), buf.size());
1671 InsertText(onePastSemiLoc, "}", 1);
1672 }
1673 return;
1674}
1675
1676void RewriteObjC::RewriteSyncReturnStmts(Stmt *S, std::string syncExitBuf) {
1677 // Perform a bottom up traversal of all children.
1678 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
1679 CI != E; ++CI)
1680 if (*CI) {
1681 RewriteSyncReturnStmts(*CI, syncExitBuf);
1682 }
1683 if (isa<ReturnStmt>(S)) {
1684 SourceLocation startLoc = S->getLocStart();
1685 const char *startBuf = SM->getCharacterData(startLoc);
1686
1687 const char *semiBuf = strchr(startBuf, ';');
1688 assert((*semiBuf == ';') && "RewriteSyncReturnStmts: can't find ';'");
1689 SourceLocation onePastSemiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
1690
1691 std::string buf;
1692 buf = "{ objc_exception_try_exit(&_stack);";
1693 buf += syncExitBuf;
1694 buf += " return";
1695
1696 ReplaceText(startLoc, 6, buf.c_str(), buf.size());
1697 InsertText(onePastSemiLoc, "}", 1);
1698 }
1699 return;
1700}
1701
Steve Naroffb29b4272008-04-14 22:03:09 +00001702Stmt *RewriteObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
Steve Naroff75730982007-11-07 04:08:17 +00001703 // Get the start location and compute the semi location.
1704 SourceLocation startLoc = S->getLocStart();
1705 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001706
Steve Naroff75730982007-11-07 04:08:17 +00001707 assert((*startBuf == '@') && "bogus @try location");
1708
1709 std::string buf;
1710 // declare a new scope with two variables, _stack and _rethrow.
1711 buf = "/* @try scope begin */ { struct _objc_exception_data {\n";
1712 buf += "int buf[18/*32-bit i386*/];\n";
1713 buf += "char *pointers[4];} _stack;\n";
1714 buf += "id volatile _rethrow = 0;\n";
1715 buf += "objc_exception_try_enter(&_stack);\n";
Steve Naroff21867b12007-11-07 18:43:40 +00001716 buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
Steve Naroff75730982007-11-07 04:08:17 +00001717
Chris Lattneraadaf782008-01-31 19:51:04 +00001718 ReplaceText(startLoc, 4, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001719
Steve Naroff75730982007-11-07 04:08:17 +00001720 startLoc = S->getTryBody()->getLocEnd();
1721 startBuf = SM->getCharacterData(startLoc);
1722
1723 assert((*startBuf == '}') && "bogus @try block");
Mike Stump1eb44332009-09-09 15:08:12 +00001724
Steve Naroff75730982007-11-07 04:08:17 +00001725 SourceLocation lastCurlyLoc = startLoc;
Steve Naroffc9ba1722008-07-16 15:31:30 +00001726 ObjCAtCatchStmt *catchList = S->getCatchStmts();
1727 if (catchList) {
1728 startLoc = startLoc.getFileLocWithOffset(1);
1729 buf = " /* @catch begin */ else {\n";
1730 buf += " id _caught = objc_exception_extract(&_stack);\n";
1731 buf += " objc_exception_try_enter (&_stack);\n";
1732 buf += " if (_setjmp(_stack.buf))\n";
1733 buf += " _rethrow = objc_exception_extract(&_stack);\n";
1734 buf += " else { /* @catch continue */";
Mike Stump1eb44332009-09-09 15:08:12 +00001735
Steve Naroffc9ba1722008-07-16 15:31:30 +00001736 InsertText(startLoc, buf.c_str(), buf.size());
Steve Naroff8bd3dc62008-09-09 19:59:12 +00001737 } else { /* no catch list */
1738 buf = "}\nelse {\n";
1739 buf += " _rethrow = objc_exception_extract(&_stack);\n";
1740 buf += "}";
1741 ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
Steve Naroffc9ba1722008-07-16 15:31:30 +00001742 }
Steve Naroff75730982007-11-07 04:08:17 +00001743 bool sawIdTypedCatch = false;
1744 Stmt *lastCatchBody = 0;
Steve Naroff75730982007-11-07 04:08:17 +00001745 while (catchList) {
Steve Naroff7ba138a2009-03-03 19:52:17 +00001746 ParmVarDecl *catchDecl = catchList->getCatchParamDecl();
Steve Naroff75730982007-11-07 04:08:17 +00001747
Mike Stump1eb44332009-09-09 15:08:12 +00001748 if (catchList == S->getCatchStmts())
Steve Naroff75730982007-11-07 04:08:17 +00001749 buf = "if ("; // we are generating code for the first catch clause
1750 else
1751 buf = "else if (";
1752 startLoc = catchList->getLocStart();
1753 startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001754
Steve Naroff75730982007-11-07 04:08:17 +00001755 assert((*startBuf == '@') && "bogus @catch location");
Mike Stump1eb44332009-09-09 15:08:12 +00001756
Steve Naroff75730982007-11-07 04:08:17 +00001757 const char *lParenLoc = strchr(startBuf, '(');
1758
Steve Naroffbe4b3332008-02-01 22:08:12 +00001759 if (catchList->hasEllipsis()) {
Steve Naroffe12e6922008-02-01 20:02:07 +00001760 // Now rewrite the body...
1761 lastCatchBody = catchList->getCatchBody();
Steve Naroffe12e6922008-02-01 20:02:07 +00001762 SourceLocation bodyLoc = lastCatchBody->getLocStart();
1763 const char *bodyBuf = SM->getCharacterData(bodyLoc);
Chris Lattner06767512008-04-08 05:52:18 +00001764 assert(*SM->getCharacterData(catchList->getRParenLoc()) == ')' &&
1765 "bogus @catch paren location");
Steve Naroffe12e6922008-02-01 20:02:07 +00001766 assert((*bodyBuf == '{') && "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001767
Steve Naroffe12e6922008-02-01 20:02:07 +00001768 buf += "1) { id _tmp = _caught;";
Daniel Dunbard7407dc2009-08-19 19:10:30 +00001769 Rewrite.ReplaceText(startLoc, bodyBuf-startBuf+1, buf);
Steve Naroff7ba138a2009-03-03 19:52:17 +00001770 } else if (catchDecl) {
1771 QualType t = catchDecl->getType();
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001772 if (t == Context->getObjCIdType()) {
Steve Naroff75730982007-11-07 04:08:17 +00001773 buf += "1) { ";
Chris Lattneraadaf782008-01-31 19:51:04 +00001774 ReplaceText(startLoc, lParenLoc-startBuf+1, buf.c_str(), buf.size());
Steve Naroff75730982007-11-07 04:08:17 +00001775 sawIdTypedCatch = true;
Fariborz Jahanian66867c52010-01-12 01:22:23 +00001776 } else if (t->isObjCObjectPointerType()) {
1777 QualType InterfaceTy = t->getPointeeType();
1778 const ObjCInterfaceType *cls = // Should be a pointer to a class.
1779 InterfaceTy->getAs<ObjCInterfaceType>();
Steve Naroff75730982007-11-07 04:08:17 +00001780 if (cls) {
Steve Naroff21867b12007-11-07 18:43:40 +00001781 buf += "objc_exception_match((struct objc_class *)objc_getClass(\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00001782 buf += cls->getDecl()->getNameAsString();
Steve Naroff21867b12007-11-07 18:43:40 +00001783 buf += "\"), (struct objc_object *)_caught)) { ";
Chris Lattneraadaf782008-01-31 19:51:04 +00001784 ReplaceText(startLoc, lParenLoc-startBuf+1, buf.c_str(), buf.size());
Steve Naroff75730982007-11-07 04:08:17 +00001785 }
1786 }
1787 // Now rewrite the body...
1788 lastCatchBody = catchList->getCatchBody();
1789 SourceLocation rParenLoc = catchList->getRParenLoc();
1790 SourceLocation bodyLoc = lastCatchBody->getLocStart();
1791 const char *bodyBuf = SM->getCharacterData(bodyLoc);
1792 const char *rParenBuf = SM->getCharacterData(rParenLoc);
1793 assert((*rParenBuf == ')') && "bogus @catch paren location");
1794 assert((*bodyBuf == '{') && "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001795
Steve Naroff75730982007-11-07 04:08:17 +00001796 buf = " = _caught;";
Mike Stump1eb44332009-09-09 15:08:12 +00001797 // Here we replace ") {" with "= _caught;" (which initializes and
Steve Naroff75730982007-11-07 04:08:17 +00001798 // declares the @catch parameter).
Chris Lattneraadaf782008-01-31 19:51:04 +00001799 ReplaceText(rParenLoc, bodyBuf-rParenBuf+1, buf.c_str(), buf.size());
Steve Naroff7ba138a2009-03-03 19:52:17 +00001800 } else {
Steve Naroff75730982007-11-07 04:08:17 +00001801 assert(false && "@catch rewrite bug");
Steve Naroff2bd03922007-11-07 15:32:26 +00001802 }
Steve Naroffe12e6922008-02-01 20:02:07 +00001803 // make sure all the catch bodies get rewritten!
Steve Naroff75730982007-11-07 04:08:17 +00001804 catchList = catchList->getNextCatchStmt();
1805 }
1806 // Complete the catch list...
1807 if (lastCatchBody) {
1808 SourceLocation bodyLoc = lastCatchBody->getLocEnd();
Chris Lattner06767512008-04-08 05:52:18 +00001809 assert(*SM->getCharacterData(bodyLoc) == '}' &&
1810 "bogus @catch body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001811
Steve Naroff378f47a2008-09-11 15:29:03 +00001812 // Insert the last (implicit) else clause *before* the right curly brace.
1813 bodyLoc = bodyLoc.getFileLocWithOffset(-1);
1814 buf = "} /* last catch end */\n";
1815 buf += "else {\n";
1816 buf += " _rethrow = _caught;\n";
1817 buf += " objc_exception_try_exit(&_stack);\n";
1818 buf += "} } /* @catch end */\n";
1819 if (!S->getFinallyStmt())
1820 buf += "}\n";
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001821 InsertText(bodyLoc, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001822
Steve Naroff75730982007-11-07 04:08:17 +00001823 // Set lastCurlyLoc
1824 lastCurlyLoc = lastCatchBody->getLocEnd();
1825 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00001826 if (ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt()) {
Steve Naroff75730982007-11-07 04:08:17 +00001827 startLoc = finalStmt->getLocStart();
1828 startBuf = SM->getCharacterData(startLoc);
1829 assert((*startBuf == '@') && "bogus @finally start");
Mike Stump1eb44332009-09-09 15:08:12 +00001830
Steve Naroff75730982007-11-07 04:08:17 +00001831 buf = "/* @finally */";
Chris Lattneraadaf782008-01-31 19:51:04 +00001832 ReplaceText(startLoc, 8, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001833
Steve Naroff75730982007-11-07 04:08:17 +00001834 Stmt *body = finalStmt->getFinallyBody();
1835 SourceLocation startLoc = body->getLocStart();
1836 SourceLocation endLoc = body->getLocEnd();
Chris Lattner06767512008-04-08 05:52:18 +00001837 assert(*SM->getCharacterData(startLoc) == '{' &&
1838 "bogus @finally body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001839 assert(*SM->getCharacterData(endLoc) == '}' &&
Chris Lattner06767512008-04-08 05:52:18 +00001840 "bogus @finally body location");
Mike Stump1eb44332009-09-09 15:08:12 +00001841
Steve Naroff75730982007-11-07 04:08:17 +00001842 startLoc = startLoc.getFileLocWithOffset(1);
1843 buf = " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001844 InsertText(startLoc, buf.c_str(), buf.size());
Steve Naroff75730982007-11-07 04:08:17 +00001845 endLoc = endLoc.getFileLocWithOffset(-1);
1846 buf = " if (_rethrow) objc_exception_throw(_rethrow);\n";
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001847 InsertText(endLoc, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001848
Steve Naroff75730982007-11-07 04:08:17 +00001849 // Set lastCurlyLoc
1850 lastCurlyLoc = body->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00001851
Steve Naroff8c565152008-12-05 17:03:39 +00001852 // Now check for any return/continue/go statements within the @try.
Steve Naroffb85e77a2009-12-05 21:43:12 +00001853 WarnAboutReturnGotoStmts(S->getTryBody());
Steve Naroff378f47a2008-09-11 15:29:03 +00001854 } else { /* no finally clause - make sure we synthesize an implicit one */
1855 buf = "{ /* implicit finally clause */\n";
1856 buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
1857 buf += " if (_rethrow) objc_exception_throw(_rethrow);\n";
1858 buf += "}";
1859 ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
Steve Naroffb85e77a2009-12-05 21:43:12 +00001860
1861 // Now check for any return/continue/go statements within the @try.
1862 // The implicit finally clause won't called if the @try contains any
1863 // jump statements.
1864 bool hasReturns = false;
1865 HasReturnStmts(S->getTryBody(), hasReturns);
1866 if (hasReturns)
1867 RewriteTryReturnStmts(S->getTryBody());
Steve Naroff75730982007-11-07 04:08:17 +00001868 }
1869 // Now emit the final closing curly brace...
1870 lastCurlyLoc = lastCurlyLoc.getFileLocWithOffset(1);
1871 buf = " } /* @try scope end */\n";
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00001872 InsertText(lastCurlyLoc, buf.c_str(), buf.size());
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00001873 return 0;
1874}
1875
Steve Naroffb29b4272008-04-14 22:03:09 +00001876Stmt *RewriteObjC::RewriteObjCCatchStmt(ObjCAtCatchStmt *S) {
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00001877 return 0;
1878}
1879
Steve Naroffb29b4272008-04-14 22:03:09 +00001880Stmt *RewriteObjC::RewriteObjCFinallyStmt(ObjCAtFinallyStmt *S) {
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00001881 return 0;
1882}
1883
Mike Stump1eb44332009-09-09 15:08:12 +00001884// This can't be done with ReplaceStmt(S, ThrowExpr), since
1885// the throw expression is typically a message expression that's already
Steve Naroff2bd03922007-11-07 15:32:26 +00001886// been rewritten! (which implies the SourceLocation's are invalid).
Steve Naroffb29b4272008-04-14 22:03:09 +00001887Stmt *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
Steve Naroff2bd03922007-11-07 15:32:26 +00001888 // Get the start location and compute the semi location.
1889 SourceLocation startLoc = S->getLocStart();
1890 const char *startBuf = SM->getCharacterData(startLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00001891
Steve Naroff2bd03922007-11-07 15:32:26 +00001892 assert((*startBuf == '@') && "bogus @throw location");
1893
1894 std::string buf;
1895 /* void objc_exception_throw(id) __attribute__((noreturn)); */
Steve Naroff20ebf8f2008-01-19 00:42:38 +00001896 if (S->getThrowExpr())
1897 buf = "objc_exception_throw(";
1898 else // add an implicit argument
1899 buf = "objc_exception_throw(_caught";
Mike Stump1eb44332009-09-09 15:08:12 +00001900
Steve Naroff4ba0acb2008-07-25 15:41:30 +00001901 // handle "@ throw" correctly.
1902 const char *wBuf = strchr(startBuf, 'w');
1903 assert((*wBuf == 'w') && "@throw: can't find 'w'");
1904 ReplaceText(startLoc, wBuf-startBuf+1, buf.c_str(), buf.size());
Mike Stump1eb44332009-09-09 15:08:12 +00001905
Steve Naroff2bd03922007-11-07 15:32:26 +00001906 const char *semiBuf = strchr(startBuf, ';');
1907 assert((*semiBuf == ';') && "@throw: can't find ';'");
1908 SourceLocation semiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf);
1909 buf = ");";
Chris Lattneraadaf782008-01-31 19:51:04 +00001910 ReplaceText(semiLoc, 1, buf.c_str(), buf.size());
Steve Naroff2bd03922007-11-07 15:32:26 +00001911 return 0;
1912}
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00001913
Steve Naroffb29b4272008-04-14 22:03:09 +00001914Stmt *RewriteObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
Chris Lattner01c57482007-10-17 22:35:30 +00001915 // Create a new string expression.
1916 QualType StrType = Context->getPointerType(Context->CharTy);
Anders Carlsson85f9bce2007-10-29 05:01:08 +00001917 std::string StrEncoding;
Daniel Dunbar0d504c12008-10-17 20:21:44 +00001918 Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
Chris Lattner2085fd62009-02-18 06:40:38 +00001919 Expr *Replacement = StringLiteral::Create(*Context,StrEncoding.c_str(),
1920 StrEncoding.length(), false,StrType,
1921 SourceLocation());
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00001922 ReplaceStmt(Exp, Replacement);
Mike Stump1eb44332009-09-09 15:08:12 +00001923
Chris Lattner07506182007-11-30 22:53:43 +00001924 // Replace this subexpr in the parent.
Steve Naroff4c3580e2008-12-04 23:50:32 +00001925 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Chris Lattnere64b7772007-10-24 16:57:36 +00001926 return Replacement;
Chris Lattner311ff022007-10-16 22:36:42 +00001927}
1928
Steve Naroffb29b4272008-04-14 22:03:09 +00001929Stmt *RewriteObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
Steve Naroff1a937642008-12-22 22:16:07 +00001930 if (!SelGetUidFunctionDecl)
1931 SynthSelGetUidFunctionDecl();
Steve Naroffb42f8412007-11-05 14:50:49 +00001932 assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
1933 // Create a call to sel_registerName("selName").
1934 llvm::SmallVector<Expr*, 8> SelExprs;
1935 QualType argType = Context->getPointerType(Context->CharTy);
Mike Stump1eb44332009-09-09 15:08:12 +00001936 SelExprs.push_back(StringLiteral::Create(*Context,
Ted Kremenek6e94ef52009-02-06 19:55:15 +00001937 Exp->getSelector().getAsString().c_str(),
Chris Lattner077bf5e2008-11-24 03:33:13 +00001938 Exp->getSelector().getAsString().size(),
Chris Lattner726e1682009-02-18 05:49:11 +00001939 false, argType, SourceLocation()));
Steve Naroffb42f8412007-11-05 14:50:49 +00001940 CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
1941 &SelExprs[0], SelExprs.size());
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00001942 ReplaceStmt(Exp, SelExp);
Steve Naroff4c3580e2008-12-04 23:50:32 +00001943 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroffb42f8412007-11-05 14:50:49 +00001944 return SelExp;
1945}
1946
Steve Naroffb29b4272008-04-14 22:03:09 +00001947CallExpr *RewriteObjC::SynthesizeCallToFunctionDecl(
Steve Naroff934f2762007-10-24 22:48:43 +00001948 FunctionDecl *FD, Expr **args, unsigned nargs) {
Steve Naroffebf2b562007-10-23 23:50:29 +00001949 // Get the type, we will need to reference it in a couple spots.
Steve Naroff934f2762007-10-24 22:48:43 +00001950 QualType msgSendType = FD->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00001951
Steve Naroffebf2b562007-10-23 23:50:29 +00001952 // Create a reference to the objc_msgSend() declaration.
Ted Kremenek8189cde2009-02-07 01:47:29 +00001953 DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, msgSendType, SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00001954
Steve Naroffebf2b562007-10-23 23:50:29 +00001955 // Now, we cast the reference to a pointer to the objc_msgSend type.
Chris Lattnerf04da132007-10-24 17:06:59 +00001956 QualType pToFunc = Context->getPointerType(msgSendType);
Mike Stump1eb44332009-09-09 15:08:12 +00001957 ImplicitCastExpr *ICE = new (Context) ImplicitCastExpr(pToFunc,
Anders Carlssoncdef2b72009-07-31 00:48:10 +00001958 CastExpr::CK_Unknown,
Mike Stump1eb44332009-09-09 15:08:12 +00001959 DRE,
Douglas Gregoreb8f3062008-11-12 17:17:38 +00001960 /*isLvalue=*/false);
Mike Stump1eb44332009-09-09 15:08:12 +00001961
John McCall183700f2009-09-21 23:43:11 +00001962 const FunctionType *FT = msgSendType->getAs<FunctionType>();
Mike Stump1eb44332009-09-09 15:08:12 +00001963
Ted Kremenek668bf912009-02-09 20:51:47 +00001964 return new (Context) CallExpr(*Context, ICE, args, nargs, FT->getResultType(),
1965 SourceLocation());
Steve Naroff934f2762007-10-24 22:48:43 +00001966}
1967
Steve Naroffd5255f52007-11-01 13:24:47 +00001968static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
1969 const char *&startRef, const char *&endRef) {
1970 while (startBuf < endBuf) {
1971 if (*startBuf == '<')
1972 startRef = startBuf; // mark the start.
1973 if (*startBuf == '>') {
Steve Naroff32174822007-11-09 12:50:28 +00001974 if (startRef && *startRef == '<') {
1975 endRef = startBuf; // mark the end.
1976 return true;
1977 }
1978 return false;
Steve Naroffd5255f52007-11-01 13:24:47 +00001979 }
1980 startBuf++;
1981 }
1982 return false;
1983}
1984
Fariborz Jahanian61477f72007-12-11 22:50:14 +00001985static void scanToNextArgument(const char *&argRef) {
1986 int angle = 0;
1987 while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
1988 if (*argRef == '<')
1989 angle++;
1990 else if (*argRef == '>')
1991 angle--;
1992 argRef++;
1993 }
1994 assert(angle == 0 && "scanToNextArgument - bad protocol type syntax");
1995}
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00001996
Steve Naroffb29b4272008-04-14 22:03:09 +00001997bool RewriteObjC::needToScanForQualifiers(QualType T) {
Fariborz Jahanian32132a02010-02-03 21:29:28 +00001998 if (T->isObjCQualifiedIdType())
1999 return true;
Fariborz Jahanian84aa9462010-02-02 18:35:07 +00002000 if (const PointerType *PT = T->getAs<PointerType>()) {
2001 if (PT->getPointeeType()->isObjCQualifiedIdType())
2002 return true;
2003 }
2004 if (T->isObjCObjectPointerType()) {
2005 T = T->getPointeeType();
2006 return T->isObjCQualifiedInterfaceType();
2007 }
2008 return false;
Steve Naroffd5255f52007-11-01 13:24:47 +00002009}
2010
Steve Naroff4f95b752008-07-29 18:15:38 +00002011void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
2012 QualType Type = E->getType();
2013 if (needToScanForQualifiers(Type)) {
Steve Naroffcda658e2008-11-19 21:15:47 +00002014 SourceLocation Loc, EndLoc;
Mike Stump1eb44332009-09-09 15:08:12 +00002015
Steve Naroffcda658e2008-11-19 21:15:47 +00002016 if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
2017 Loc = ECE->getLParenLoc();
2018 EndLoc = ECE->getRParenLoc();
2019 } else {
2020 Loc = E->getLocStart();
2021 EndLoc = E->getLocEnd();
2022 }
2023 // This will defend against trying to rewrite synthesized expressions.
2024 if (Loc.isInvalid() || EndLoc.isInvalid())
2025 return;
2026
Steve Naroff4f95b752008-07-29 18:15:38 +00002027 const char *startBuf = SM->getCharacterData(Loc);
Steve Naroffcda658e2008-11-19 21:15:47 +00002028 const char *endBuf = SM->getCharacterData(EndLoc);
Steve Naroff4f95b752008-07-29 18:15:38 +00002029 const char *startRef = 0, *endRef = 0;
2030 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2031 // Get the locations of the startRef, endRef.
2032 SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-startBuf);
2033 SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-startBuf+1);
2034 // Comment out the protocol references.
2035 InsertText(LessLoc, "/*", 2);
2036 InsertText(GreaterLoc, "*/", 2);
2037 }
2038 }
2039}
2040
Steve Naroffb29b4272008-04-14 22:03:09 +00002041void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002042 SourceLocation Loc;
2043 QualType Type;
Douglas Gregor72564e72009-02-26 23:50:07 +00002044 const FunctionProtoType *proto = 0;
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002045 if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
2046 Loc = VD->getLocation();
2047 Type = VD->getType();
2048 }
2049 else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
2050 Loc = FD->getLocation();
2051 // Check for ObjC 'id' and class types that have been adorned with protocol
2052 // information (id<p>, C<p>*). The protocol references need to be rewritten!
John McCall183700f2009-09-21 23:43:11 +00002053 const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002054 assert(funcType && "missing function type");
Douglas Gregor72564e72009-02-26 23:50:07 +00002055 proto = dyn_cast<FunctionProtoType>(funcType);
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002056 if (!proto)
2057 return;
2058 Type = proto->getResultType();
2059 }
Steve Naroff3d7e7862009-12-05 15:55:59 +00002060 else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
2061 Loc = FD->getLocation();
2062 Type = FD->getType();
2063 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002064 else
2065 return;
Mike Stump1eb44332009-09-09 15:08:12 +00002066
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002067 if (needToScanForQualifiers(Type)) {
Steve Naroffd5255f52007-11-01 13:24:47 +00002068 // Since types are unique, we need to scan the buffer.
Mike Stump1eb44332009-09-09 15:08:12 +00002069
Steve Naroffd5255f52007-11-01 13:24:47 +00002070 const char *endBuf = SM->getCharacterData(Loc);
2071 const char *startBuf = endBuf;
Steve Naroff6cafbf22008-05-31 05:02:17 +00002072 while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
Steve Naroffd5255f52007-11-01 13:24:47 +00002073 startBuf--; // scan backward (from the decl location) for return type.
2074 const char *startRef = 0, *endRef = 0;
2075 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2076 // Get the locations of the startRef, endRef.
2077 SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-endBuf);
2078 SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-endBuf+1);
2079 // Comment out the protocol references.
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002080 InsertText(LessLoc, "/*", 2);
2081 InsertText(GreaterLoc, "*/", 2);
Steve Naroff9165ad32007-10-31 04:38:33 +00002082 }
2083 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002084 if (!proto)
2085 return; // most likely, was a variable
Steve Naroffd5255f52007-11-01 13:24:47 +00002086 // Now check arguments.
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002087 const char *startBuf = SM->getCharacterData(Loc);
2088 const char *startFuncBuf = startBuf;
Steve Naroffd5255f52007-11-01 13:24:47 +00002089 for (unsigned i = 0; i < proto->getNumArgs(); i++) {
2090 if (needToScanForQualifiers(proto->getArgType(i))) {
2091 // Since types are unique, we need to scan the buffer.
Mike Stump1eb44332009-09-09 15:08:12 +00002092
Steve Naroffd5255f52007-11-01 13:24:47 +00002093 const char *endBuf = startBuf;
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002094 // scan forward (from the decl location) for argument types.
2095 scanToNextArgument(endBuf);
Steve Naroffd5255f52007-11-01 13:24:47 +00002096 const char *startRef = 0, *endRef = 0;
2097 if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
2098 // Get the locations of the startRef, endRef.
Mike Stump1eb44332009-09-09 15:08:12 +00002099 SourceLocation LessLoc =
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00002100 Loc.getFileLocWithOffset(startRef-startFuncBuf);
Mike Stump1eb44332009-09-09 15:08:12 +00002101 SourceLocation GreaterLoc =
Fariborz Jahanian291e04b2007-12-11 23:04:08 +00002102 Loc.getFileLocWithOffset(endRef-startFuncBuf+1);
Steve Naroffd5255f52007-11-01 13:24:47 +00002103 // Comment out the protocol references.
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002104 InsertText(LessLoc, "/*", 2);
2105 InsertText(GreaterLoc, "*/", 2);
Steve Naroffd5255f52007-11-01 13:24:47 +00002106 }
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002107 startBuf = ++endBuf;
2108 }
2109 else {
Steve Naroffaba49d12008-08-06 15:58:23 +00002110 // If the function name is derived from a macro expansion, then the
2111 // argument buffer will not follow the name. Need to speak with Chris.
2112 while (*startBuf && *startBuf != ')' && *startBuf != ',')
Fariborz Jahanian61477f72007-12-11 22:50:14 +00002113 startBuf++; // scan forward (from the decl location) for argument types.
2114 startBuf++;
2115 }
Steve Naroffd5255f52007-11-01 13:24:47 +00002116 }
Steve Naroff9165ad32007-10-31 04:38:33 +00002117}
2118
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002119// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
Steve Naroffb29b4272008-04-14 22:03:09 +00002120void RewriteObjC::SynthSelGetUidFunctionDecl() {
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002121 IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
2122 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002123 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002124 QualType getFuncType = Context->getFunctionType(Context->getObjCSelType(),
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002125 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002126 false /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002127 SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002128 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002129 SelGetUidIdent, getFuncType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002130 FunctionDecl::Extern, false);
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002131}
2132
Steve Naroffb29b4272008-04-14 22:03:09 +00002133void RewriteObjC::RewriteFunctionDecl(FunctionDecl *FD) {
Steve Naroff09b266e2007-10-30 23:14:51 +00002134 // declared in <objc/objc.h>
Douglas Gregor51efe562009-01-09 01:47:02 +00002135 if (FD->getIdentifier() &&
2136 strcmp(FD->getNameAsCString(), "sel_registerName") == 0) {
Steve Naroff09b266e2007-10-30 23:14:51 +00002137 SelGetUidFunctionDecl = FD;
Steve Naroff9165ad32007-10-31 04:38:33 +00002138 return;
2139 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002140 RewriteObjCQualifiedInterfaceTypes(FD);
Steve Naroff09b266e2007-10-30 23:14:51 +00002141}
2142
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00002143void RewriteObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
2144 SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
2145 const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
2146 const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
2147 if (!proto)
2148 return;
2149 QualType Type = proto->getResultType();
2150 std::string FdStr = Type.getAsString();
2151 FdStr += " ";
2152 FdStr += FD->getNameAsCString();
2153 FdStr += "(";
2154 unsigned numArgs = proto->getNumArgs();
2155 for (unsigned i = 0; i < numArgs; i++) {
2156 QualType ArgType = proto->getArgType(i);
2157 FdStr += ArgType.getAsString();
2158
2159 if (i+1 < numArgs)
2160 FdStr += ", ";
2161 }
2162 FdStr += ");\n";
2163 InsertText(FunLocStart, FdStr.c_str(), FdStr.size());
2164 CurFunctionDeclToDeclareForBlock = 0;
2165}
2166
Steve Naroffc0a123c2008-03-11 17:37:02 +00002167// SynthSuperContructorFunctionDecl - id objc_super(id obj, id super);
Steve Naroffb29b4272008-04-14 22:03:09 +00002168void RewriteObjC::SynthSuperContructorFunctionDecl() {
Steve Naroffc0a123c2008-03-11 17:37:02 +00002169 if (SuperContructorFunctionDecl)
2170 return;
Steve Naroff46a98a72008-12-23 20:11:22 +00002171 IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
Steve Naroffc0a123c2008-03-11 17:37:02 +00002172 llvm::SmallVector<QualType, 16> ArgTys;
2173 QualType argT = Context->getObjCIdType();
2174 assert(!argT.isNull() && "Can't find 'id' type");
2175 ArgTys.push_back(argT);
2176 ArgTys.push_back(argT);
2177 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
2178 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002179 false, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002180 SuperContructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002181 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002182 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002183 FunctionDecl::Extern, false);
Steve Naroffc0a123c2008-03-11 17:37:02 +00002184}
2185
Steve Naroff09b266e2007-10-30 23:14:51 +00002186// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002187void RewriteObjC::SynthMsgSendFunctionDecl() {
Steve Naroff09b266e2007-10-30 23:14:51 +00002188 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
2189 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002190 QualType argT = Context->getObjCIdType();
Steve Naroff09b266e2007-10-30 23:14:51 +00002191 assert(!argT.isNull() && "Can't find 'id' type");
2192 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002193 argT = Context->getObjCSelType();
Steve Naroff09b266e2007-10-30 23:14:51 +00002194 assert(!argT.isNull() && "Can't find 'SEL' type");
2195 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002196 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff09b266e2007-10-30 23:14:51 +00002197 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002198 true /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002199 MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002200 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002201 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002202 FunctionDecl::Extern, false);
Steve Naroff09b266e2007-10-30 23:14:51 +00002203}
2204
Steve Naroff874e2322007-11-15 10:28:18 +00002205// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(struct objc_super *, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002206void RewriteObjC::SynthMsgSendSuperFunctionDecl() {
Steve Naroff874e2322007-11-15 10:28:18 +00002207 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
2208 llvm::SmallVector<QualType, 16> ArgTys;
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00002209 RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002210 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002211 &Context->Idents.get("objc_super"));
Steve Naroff874e2322007-11-15 10:28:18 +00002212 QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
2213 assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
2214 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002215 argT = Context->getObjCSelType();
Steve Naroff874e2322007-11-15 10:28:18 +00002216 assert(!argT.isNull() && "Can't find 'SEL' type");
2217 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002218 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff874e2322007-11-15 10:28:18 +00002219 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002220 true /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002221 MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002222 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002223 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002224 FunctionDecl::Extern, false);
Steve Naroff874e2322007-11-15 10:28:18 +00002225}
2226
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002227// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002228void RewriteObjC::SynthMsgSendStretFunctionDecl() {
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002229 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
2230 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002231 QualType argT = Context->getObjCIdType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002232 assert(!argT.isNull() && "Can't find 'id' type");
2233 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002234 argT = Context->getObjCSelType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002235 assert(!argT.isNull() && "Can't find 'SEL' type");
2236 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002237 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002238 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002239 true /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002240 MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002241 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002242 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002243 FunctionDecl::Extern, false);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002244}
2245
Mike Stump1eb44332009-09-09 15:08:12 +00002246// SynthMsgSendSuperStretFunctionDecl -
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002247// id objc_msgSendSuper_stret(struct objc_super *, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002248void RewriteObjC::SynthMsgSendSuperStretFunctionDecl() {
Mike Stump1eb44332009-09-09 15:08:12 +00002249 IdentifierInfo *msgSendIdent =
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002250 &Context->Idents.get("objc_msgSendSuper_stret");
2251 llvm::SmallVector<QualType, 16> ArgTys;
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00002252 RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Chris Lattner0ed844b2008-04-04 06:12:32 +00002253 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002254 &Context->Idents.get("objc_super"));
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002255 QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
2256 assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
2257 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002258 argT = Context->getObjCSelType();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002259 assert(!argT.isNull() && "Can't find 'SEL' type");
2260 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002261 QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002262 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002263 true /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002264 MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002265 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002266 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002267 FunctionDecl::Extern, false);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002268}
2269
Steve Naroff1284db82008-05-08 22:02:18 +00002270// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
Steve Naroffb29b4272008-04-14 22:03:09 +00002271void RewriteObjC::SynthMsgSendFpretFunctionDecl() {
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002272 IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
2273 llvm::SmallVector<QualType, 16> ArgTys;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002274 QualType argT = Context->getObjCIdType();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002275 assert(!argT.isNull() && "Can't find 'id' type");
2276 ArgTys.push_back(argT);
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002277 argT = Context->getObjCSelType();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002278 assert(!argT.isNull() && "Can't find 'SEL' type");
2279 ArgTys.push_back(argT);
Steve Naroff1284db82008-05-08 22:02:18 +00002280 QualType msgSendType = Context->getFunctionType(Context->DoubleTy,
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002281 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002282 true /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002283 MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002284 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002285 msgSendIdent, msgSendType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002286 FunctionDecl::Extern, false);
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002287}
2288
Steve Naroff09b266e2007-10-30 23:14:51 +00002289// SynthGetClassFunctionDecl - id objc_getClass(const char *name);
Steve Naroffb29b4272008-04-14 22:03:09 +00002290void RewriteObjC::SynthGetClassFunctionDecl() {
Steve Naroff09b266e2007-10-30 23:14:51 +00002291 IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
2292 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002293 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002294 QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff09b266e2007-10-30 23:14:51 +00002295 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002296 false /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002297 GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002298 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002299 getClassIdent, getClassType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002300 FunctionDecl::Extern, false);
Steve Naroff09b266e2007-10-30 23:14:51 +00002301}
2302
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002303// SynthGetMetaClassFunctionDecl - id objc_getClass(const char *name);
Steve Naroffb29b4272008-04-14 22:03:09 +00002304void RewriteObjC::SynthGetMetaClassFunctionDecl() {
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002305 IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
2306 llvm::SmallVector<QualType, 16> ArgTys;
John McCall0953e762009-09-24 19:53:00 +00002307 ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002308 QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002309 &ArgTys[0], ArgTys.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002310 false /*isVariadic*/, 0);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00002311 GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002312 SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002313 getClassIdent, getClassType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002314 FunctionDecl::Extern, false);
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002315}
2316
Steve Naroffb29b4272008-04-14 22:03:09 +00002317Stmt *RewriteObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002318 QualType strType = getConstantStringStructType();
2319
2320 std::string S = "__NSConstantStringImpl_";
Steve Naroff7691d9b2008-05-31 03:35:42 +00002321
2322 std::string tmpName = InFileName;
2323 unsigned i;
2324 for (i=0; i < tmpName.length(); i++) {
2325 char c = tmpName.at(i);
2326 // replace any non alphanumeric characters with '_'.
2327 if (!isalpha(c) && (c < '0' || c > '9'))
2328 tmpName[i] = '_';
2329 }
2330 S += tmpName;
2331 S += "_";
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002332 S += utostr(NumObjCStringLiterals++);
2333
Steve Naroffba92b2e2008-03-27 22:29:16 +00002334 Preamble += "static __NSConstantStringImpl " + S;
2335 Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
2336 Preamble += "0x000007c8,"; // utf8_str
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002337 // The pretty printer for StringLiteral handles escape characters properly.
Ted Kremeneka95d3752008-09-13 05:16:45 +00002338 std::string prettyBufS;
2339 llvm::raw_string_ostream prettyBuf(prettyBufS);
Chris Lattnere4f21422009-06-30 01:26:17 +00002340 Exp->getString()->printPretty(prettyBuf, *Context, 0,
2341 PrintingPolicy(LangOpts));
Steve Naroffba92b2e2008-03-27 22:29:16 +00002342 Preamble += prettyBuf.str();
2343 Preamble += ",";
Steve Narofffd5b76f2009-12-06 01:48:44 +00002344 Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00002345
2346 VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
2347 &Context->Idents.get(S.c_str()), strType, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002348 VarDecl::Static);
Ted Kremenek8189cde2009-02-07 01:47:29 +00002349 DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, strType, SourceLocation());
2350 Expr *Unop = new (Context) UnaryOperator(DRE, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00002351 Context->getPointerType(DRE->getType()),
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002352 SourceLocation());
Steve Naroff96984642007-11-08 14:30:50 +00002353 // cast to NSConstantString *
John McCall9d125032010-01-15 18:39:57 +00002354 CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
2355 CastExpr::CK_Unknown, Unop);
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00002356 ReplaceStmt(Exp, cast);
Steve Naroff4c3580e2008-12-04 23:50:32 +00002357 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroff96984642007-11-08 14:30:50 +00002358 return cast;
Steve Naroffbeaf2992007-11-03 11:27:19 +00002359}
2360
Steve Naroffb29b4272008-04-14 22:03:09 +00002361ObjCInterfaceDecl *RewriteObjC::isSuperReceiver(Expr *recExpr) {
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002362 // check if we are sending a message to 'super'
Douglas Gregorf8d49f62009-01-09 17:18:27 +00002363 if (!CurMethodDef || !CurMethodDef->isInstanceMethod()) return 0;
Mike Stump1eb44332009-09-09 15:08:12 +00002364
Douglas Gregorcd9b46e2008-11-04 14:56:14 +00002365 if (ObjCSuperExpr *Super = dyn_cast<ObjCSuperExpr>(recExpr)) {
Mike Stump1eb44332009-09-09 15:08:12 +00002366 const ObjCObjectPointerType *OPT =
John McCall183700f2009-09-21 23:43:11 +00002367 Super->getType()->getAs<ObjCObjectPointerType>();
Steve Naroff14108da2009-07-10 23:34:53 +00002368 assert(OPT);
2369 const ObjCInterfaceType *IT = OPT->getInterfaceType();
Chris Lattner0d17f6f2008-06-21 18:04:54 +00002370 return IT->getDecl();
2371 }
2372 return 0;
Steve Naroff874e2322007-11-15 10:28:18 +00002373}
2374
2375// struct objc_super { struct objc_object *receiver; struct objc_class *super; };
Steve Naroffb29b4272008-04-14 22:03:09 +00002376QualType RewriteObjC::getSuperStructType() {
Steve Naroff874e2322007-11-15 10:28:18 +00002377 if (!SuperStructDecl) {
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00002378 SuperStructDecl = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002379 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002380 &Context->Idents.get("objc_super"));
Steve Naroff874e2322007-11-15 10:28:18 +00002381 QualType FieldTypes[2];
Mike Stump1eb44332009-09-09 15:08:12 +00002382
Steve Naroff874e2322007-11-15 10:28:18 +00002383 // struct objc_object *receiver;
Mike Stump1eb44332009-09-09 15:08:12 +00002384 FieldTypes[0] = Context->getObjCIdType();
Steve Naroff874e2322007-11-15 10:28:18 +00002385 // struct objc_class *super;
Mike Stump1eb44332009-09-09 15:08:12 +00002386 FieldTypes[1] = Context->getObjCClassType();
Douglas Gregor44b43212008-12-11 16:49:14 +00002387
Steve Naroff874e2322007-11-15 10:28:18 +00002388 // Create fields
Douglas Gregor44b43212008-12-11 16:49:14 +00002389 for (unsigned i = 0; i < 2; ++i) {
Mike Stump1eb44332009-09-09 15:08:12 +00002390 SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
2391 SourceLocation(), 0,
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002392 FieldTypes[i], 0,
2393 /*BitWidth=*/0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002394 /*Mutable=*/false));
Douglas Gregor44b43212008-12-11 16:49:14 +00002395 }
Mike Stump1eb44332009-09-09 15:08:12 +00002396
Douglas Gregor44b43212008-12-11 16:49:14 +00002397 SuperStructDecl->completeDefinition(*Context);
Steve Naroff874e2322007-11-15 10:28:18 +00002398 }
2399 return Context->getTagDeclType(SuperStructDecl);
2400}
2401
Steve Naroffb29b4272008-04-14 22:03:09 +00002402QualType RewriteObjC::getConstantStringStructType() {
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002403 if (!ConstantStringDecl) {
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00002404 ConstantStringDecl = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002405 SourceLocation(),
Ted Kremenekdf042e62008-09-05 01:34:33 +00002406 &Context->Idents.get("__NSConstantStringImpl"));
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002407 QualType FieldTypes[4];
Mike Stump1eb44332009-09-09 15:08:12 +00002408
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002409 // struct objc_object *receiver;
Mike Stump1eb44332009-09-09 15:08:12 +00002410 FieldTypes[0] = Context->getObjCIdType();
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002411 // int flags;
Mike Stump1eb44332009-09-09 15:08:12 +00002412 FieldTypes[1] = Context->IntTy;
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002413 // char *str;
Mike Stump1eb44332009-09-09 15:08:12 +00002414 FieldTypes[2] = Context->getPointerType(Context->CharTy);
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002415 // long length;
Mike Stump1eb44332009-09-09 15:08:12 +00002416 FieldTypes[3] = Context->LongTy;
Douglas Gregor44b43212008-12-11 16:49:14 +00002417
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002418 // Create fields
Douglas Gregor44b43212008-12-11 16:49:14 +00002419 for (unsigned i = 0; i < 4; ++i) {
Mike Stump1eb44332009-09-09 15:08:12 +00002420 ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
2421 ConstantStringDecl,
Douglas Gregor44b43212008-12-11 16:49:14 +00002422 SourceLocation(), 0,
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00002423 FieldTypes[i], 0,
Douglas Gregor44b43212008-12-11 16:49:14 +00002424 /*BitWidth=*/0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00002425 /*Mutable=*/true));
Douglas Gregor44b43212008-12-11 16:49:14 +00002426 }
2427
2428 ConstantStringDecl->completeDefinition(*Context);
Steve Naroffd82a9ab2008-03-15 00:55:56 +00002429 }
2430 return Context->getTagDeclType(ConstantStringDecl);
2431}
2432
Steve Naroffb29b4272008-04-14 22:03:09 +00002433Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp) {
Fariborz Jahaniana70711b2007-12-04 21:47:40 +00002434 if (!SelGetUidFunctionDecl)
2435 SynthSelGetUidFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +00002436 if (!MsgSendFunctionDecl)
2437 SynthMsgSendFunctionDecl();
Steve Naroff874e2322007-11-15 10:28:18 +00002438 if (!MsgSendSuperFunctionDecl)
2439 SynthMsgSendSuperFunctionDecl();
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002440 if (!MsgSendStretFunctionDecl)
2441 SynthMsgSendStretFunctionDecl();
2442 if (!MsgSendSuperStretFunctionDecl)
2443 SynthMsgSendSuperStretFunctionDecl();
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002444 if (!MsgSendFpretFunctionDecl)
2445 SynthMsgSendFpretFunctionDecl();
Steve Naroff09b266e2007-10-30 23:14:51 +00002446 if (!GetClassFunctionDecl)
2447 SynthGetClassFunctionDecl();
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002448 if (!GetMetaClassFunctionDecl)
2449 SynthGetMetaClassFunctionDecl();
Mike Stump1eb44332009-09-09 15:08:12 +00002450
Steve Naroff874e2322007-11-15 10:28:18 +00002451 // default to objc_msgSend().
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002452 FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
2453 // May need to use objc_msgSend_stret() as well.
2454 FunctionDecl *MsgSendStretFlavor = 0;
Steve Naroff621edce2009-04-29 16:37:50 +00002455 if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
2456 QualType resultType = mDecl->getResultType();
Chris Lattner8b51fd72008-07-26 22:36:27 +00002457 if (resultType->isStructureType() || resultType->isUnionType())
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002458 MsgSendStretFlavor = MsgSendStretFunctionDecl;
Chris Lattner8b51fd72008-07-26 22:36:27 +00002459 else if (resultType->isRealFloatingType())
Fariborz Jahanianacb49772007-12-03 21:26:48 +00002460 MsgSendFlavor = MsgSendFpretFunctionDecl;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002461 }
Mike Stump1eb44332009-09-09 15:08:12 +00002462
Steve Naroff934f2762007-10-24 22:48:43 +00002463 // Synthesize a call to objc_msgSend().
2464 llvm::SmallVector<Expr*, 8> MsgExprs;
2465 IdentifierInfo *clsName = Exp->getClassName();
Mike Stump1eb44332009-09-09 15:08:12 +00002466
Steve Naroff934f2762007-10-24 22:48:43 +00002467 // Derive/push the receiver/selector, 2 implicit arguments to objc_msgSend().
2468 if (clsName) { // class message.
Steve Narofffc93d522008-07-24 19:44:33 +00002469 // FIXME: We need to fix Sema (and the AST for ObjCMessageExpr) to handle
2470 // the 'super' idiom within a class method.
Daniel Dunbar01eb9b92009-10-18 21:17:35 +00002471 if (clsName->getName() == "super") {
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002472 MsgSendFlavor = MsgSendSuperFunctionDecl;
2473 if (MsgSendStretFlavor)
2474 MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
2475 assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
Mike Stump1eb44332009-09-09 15:08:12 +00002476
2477 ObjCInterfaceDecl *SuperDecl =
Steve Naroff54055232008-10-27 17:20:55 +00002478 CurMethodDef->getClassInterface()->getSuperClass();
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002479
2480 llvm::SmallVector<Expr*, 4> InitExprs;
Mike Stump1eb44332009-09-09 15:08:12 +00002481
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002482 // set the receiver to self, the first argument to all methods.
Steve Naroff621edce2009-04-29 16:37:50 +00002483 InitExprs.push_back(
John McCall9d125032010-01-15 18:39:57 +00002484 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
2485 CastExpr::CK_Unknown,
Mike Stump1eb44332009-09-09 15:08:12 +00002486 new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
Steve Naroff621edce2009-04-29 16:37:50 +00002487 Context->getObjCIdType(),
John McCall9d125032010-01-15 18:39:57 +00002488 SourceLocation()))
2489 ); // set the 'receiver'.
Steve Naroff621edce2009-04-29 16:37:50 +00002490
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002491 llvm::SmallVector<Expr*, 8> ClsExprs;
2492 QualType argType = Context->getPointerType(Context->CharTy);
Chris Lattner2085fd62009-02-18 06:40:38 +00002493 ClsExprs.push_back(StringLiteral::Create(*Context,
Daniel Dunbare013d682009-10-18 20:26:12 +00002494 SuperDecl->getIdentifier()->getNameStart(),
2495 SuperDecl->getIdentifier()->getLength(),
2496 false, argType, SourceLocation()));
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002497 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002498 &ClsExprs[0],
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002499 ClsExprs.size());
2500 // To turn off a warning, type-cast to 'id'
Douglas Gregor49badde2008-10-27 19:41:14 +00002501 InitExprs.push_back( // set 'super class', using objc_getClass().
John McCall9d125032010-01-15 18:39:57 +00002502 NoTypeInfoCStyleCastExpr(Context,
2503 Context->getObjCIdType(),
2504 CastExpr::CK_Unknown, Cls));
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002505 // struct objc_super
2506 QualType superType = getSuperStructType();
Steve Naroff23f41272008-03-11 18:14:26 +00002507 Expr *SuperRep;
Mike Stump1eb44332009-09-09 15:08:12 +00002508
Steve Naroff23f41272008-03-11 18:14:26 +00002509 if (LangOpts.Microsoft) {
2510 SynthSuperContructorFunctionDecl();
2511 // Simulate a contructor call...
Mike Stump1eb44332009-09-09 15:08:12 +00002512 DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
Steve Naroff23f41272008-03-11 18:14:26 +00002513 superType, SourceLocation());
Ted Kremenek668bf912009-02-09 20:51:47 +00002514 SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00002515 InitExprs.size(),
Ted Kremenek668bf912009-02-09 20:51:47 +00002516 superType, SourceLocation());
Steve Naroff46a98a72008-12-23 20:11:22 +00002517 // The code for super is a little tricky to prevent collision with
2518 // the structure definition in the header. The rewriter has it's own
2519 // internal definition (__rw_objc_super) that is uses. This is why
2520 // we need the cast below. For example:
2521 // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
2522 //
Ted Kremenek8189cde2009-02-07 01:47:29 +00002523 SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00002524 Context->getPointerType(SuperRep->getType()),
Steve Naroff46a98a72008-12-23 20:11:22 +00002525 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00002526 SuperRep = NoTypeInfoCStyleCastExpr(Context,
2527 Context->getPointerType(superType),
2528 CastExpr::CK_Unknown, SuperRep);
Mike Stump1eb44332009-09-09 15:08:12 +00002529 } else {
Steve Naroff23f41272008-03-11 18:14:26 +00002530 // (struct objc_super) { <exprs from above> }
Mike Stump1eb44332009-09-09 15:08:12 +00002531 InitListExpr *ILE = new (Context) InitListExpr(SourceLocation(),
2532 &InitExprs[0], InitExprs.size(),
Douglas Gregor4c678342009-01-28 21:54:33 +00002533 SourceLocation());
John McCall42f56b52010-01-18 19:35:47 +00002534 TypeSourceInfo *superTInfo
2535 = Context->getTrivialTypeSourceInfo(superType);
John McCall1d7d8d62010-01-19 22:33:45 +00002536 SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
2537 superType, ILE, false);
Steve Naroff46a98a72008-12-23 20:11:22 +00002538 // struct objc_super *
Ted Kremenek8189cde2009-02-07 01:47:29 +00002539 SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00002540 Context->getPointerType(SuperRep->getType()),
Steve Naroff46a98a72008-12-23 20:11:22 +00002541 SourceLocation());
Steve Naroff23f41272008-03-11 18:14:26 +00002542 }
Steve Naroff46a98a72008-12-23 20:11:22 +00002543 MsgExprs.push_back(SuperRep);
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002544 } else {
2545 llvm::SmallVector<Expr*, 8> ClsExprs;
2546 QualType argType = Context->getPointerType(Context->CharTy);
Chris Lattner2085fd62009-02-18 06:40:38 +00002547 ClsExprs.push_back(StringLiteral::Create(*Context,
Daniel Dunbare013d682009-10-18 20:26:12 +00002548 clsName->getNameStart(),
Chris Lattner2085fd62009-02-18 06:40:38 +00002549 clsName->getLength(),
2550 false, argType,
2551 SourceLocation()));
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002552 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002553 &ClsExprs[0],
Steve Naroff9bcb5fc2007-12-07 03:50:46 +00002554 ClsExprs.size());
2555 MsgExprs.push_back(Cls);
2556 }
Steve Naroff6568d4d2007-11-14 23:54:14 +00002557 } else { // instance message.
2558 Expr *recExpr = Exp->getReceiver();
Steve Naroff874e2322007-11-15 10:28:18 +00002559
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002560 if (ObjCInterfaceDecl *SuperDecl = isSuperReceiver(recExpr)) {
Steve Naroff874e2322007-11-15 10:28:18 +00002561 MsgSendFlavor = MsgSendSuperFunctionDecl;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002562 if (MsgSendStretFlavor)
2563 MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
Steve Naroff874e2322007-11-15 10:28:18 +00002564 assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
Mike Stump1eb44332009-09-09 15:08:12 +00002565
Steve Naroff874e2322007-11-15 10:28:18 +00002566 llvm::SmallVector<Expr*, 4> InitExprs;
Mike Stump1eb44332009-09-09 15:08:12 +00002567
Fariborz Jahanianceee3e82007-12-04 22:32:58 +00002568 InitExprs.push_back(
John McCall9d125032010-01-15 18:39:57 +00002569 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
2570 CastExpr::CK_Unknown,
Mike Stump1eb44332009-09-09 15:08:12 +00002571 new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
Steve Narofff616ebb2008-07-16 22:35:27 +00002572 Context->getObjCIdType(),
John McCall9d125032010-01-15 18:39:57 +00002573 SourceLocation()))
2574 ); // set the 'receiver'.
Mike Stump1eb44332009-09-09 15:08:12 +00002575
Steve Naroff874e2322007-11-15 10:28:18 +00002576 llvm::SmallVector<Expr*, 8> ClsExprs;
2577 QualType argType = Context->getPointerType(Context->CharTy);
Mike Stump1eb44332009-09-09 15:08:12 +00002578 ClsExprs.push_back(StringLiteral::Create(*Context,
Daniel Dunbare013d682009-10-18 20:26:12 +00002579 SuperDecl->getIdentifier()->getNameStart(),
2580 SuperDecl->getIdentifier()->getLength(),
2581 false, argType, SourceLocation()));
Steve Naroff874e2322007-11-15 10:28:18 +00002582 CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002583 &ClsExprs[0],
Fariborz Jahanianceee3e82007-12-04 22:32:58 +00002584 ClsExprs.size());
Fariborz Jahanian71274312007-12-05 17:29:46 +00002585 // To turn off a warning, type-cast to 'id'
Fariborz Jahanianceee3e82007-12-04 22:32:58 +00002586 InitExprs.push_back(
Douglas Gregor49badde2008-10-27 19:41:14 +00002587 // set 'super class', using objc_getClass().
John McCall9d125032010-01-15 18:39:57 +00002588 NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
2589 CastExpr::CK_Unknown, Cls));
Steve Naroff874e2322007-11-15 10:28:18 +00002590 // struct objc_super
2591 QualType superType = getSuperStructType();
Steve Naroffc0a123c2008-03-11 17:37:02 +00002592 Expr *SuperRep;
Mike Stump1eb44332009-09-09 15:08:12 +00002593
Steve Naroffc0a123c2008-03-11 17:37:02 +00002594 if (LangOpts.Microsoft) {
2595 SynthSuperContructorFunctionDecl();
2596 // Simulate a contructor call...
Mike Stump1eb44332009-09-09 15:08:12 +00002597 DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
Steve Naroffc0a123c2008-03-11 17:37:02 +00002598 superType, SourceLocation());
Ted Kremenek668bf912009-02-09 20:51:47 +00002599 SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00002600 InitExprs.size(),
Ted Kremenek668bf912009-02-09 20:51:47 +00002601 superType, SourceLocation());
Steve Naroff46a98a72008-12-23 20:11:22 +00002602 // The code for super is a little tricky to prevent collision with
2603 // the structure definition in the header. The rewriter has it's own
2604 // internal definition (__rw_objc_super) that is uses. This is why
2605 // we need the cast below. For example:
2606 // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
2607 //
Ted Kremenek8189cde2009-02-07 01:47:29 +00002608 SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00002609 Context->getPointerType(SuperRep->getType()),
Steve Naroff46a98a72008-12-23 20:11:22 +00002610 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00002611 SuperRep = NoTypeInfoCStyleCastExpr(Context,
2612 Context->getPointerType(superType),
2613 CastExpr::CK_Unknown, SuperRep);
Steve Naroffc0a123c2008-03-11 17:37:02 +00002614 } else {
2615 // (struct objc_super) { <exprs from above> }
Mike Stump1eb44332009-09-09 15:08:12 +00002616 InitListExpr *ILE = new (Context) InitListExpr(SourceLocation(),
2617 &InitExprs[0], InitExprs.size(),
Douglas Gregor4c678342009-01-28 21:54:33 +00002618 SourceLocation());
John McCall42f56b52010-01-18 19:35:47 +00002619 TypeSourceInfo *superTInfo
2620 = Context->getTrivialTypeSourceInfo(superType);
John McCall1d7d8d62010-01-19 22:33:45 +00002621 SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
2622 superType, ILE, false);
Steve Naroffc0a123c2008-03-11 17:37:02 +00002623 }
Steve Naroff46a98a72008-12-23 20:11:22 +00002624 MsgExprs.push_back(SuperRep);
Steve Naroff874e2322007-11-15 10:28:18 +00002625 } else {
Fariborz Jahanian7dd82832007-12-07 21:21:21 +00002626 // Remove all type-casts because it may contain objc-style types; e.g.
2627 // Foo<Proto> *.
Douglas Gregor6eec8e82008-10-28 15:36:24 +00002628 while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
Fariborz Jahanian7dd82832007-12-07 21:21:21 +00002629 recExpr = CE->getSubExpr();
John McCall9d125032010-01-15 18:39:57 +00002630 recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
2631 CastExpr::CK_Unknown, recExpr);
Steve Naroff874e2322007-11-15 10:28:18 +00002632 MsgExprs.push_back(recExpr);
2633 }
Steve Naroff6568d4d2007-11-14 23:54:14 +00002634 }
Steve Naroffbeaf2992007-11-03 11:27:19 +00002635 // Create a call to sel_registerName("selName"), it will be the 2nd argument.
Steve Naroff934f2762007-10-24 22:48:43 +00002636 llvm::SmallVector<Expr*, 8> SelExprs;
2637 QualType argType = Context->getPointerType(Context->CharTy);
Mike Stump1eb44332009-09-09 15:08:12 +00002638 SelExprs.push_back(StringLiteral::Create(*Context,
Ted Kremenek6e94ef52009-02-06 19:55:15 +00002639 Exp->getSelector().getAsString().c_str(),
Chris Lattner077bf5e2008-11-24 03:33:13 +00002640 Exp->getSelector().getAsString().size(),
Chris Lattner726e1682009-02-18 05:49:11 +00002641 false, argType, SourceLocation()));
Steve Naroff934f2762007-10-24 22:48:43 +00002642 CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
2643 &SelExprs[0], SelExprs.size());
2644 MsgExprs.push_back(SelExp);
Mike Stump1eb44332009-09-09 15:08:12 +00002645
Steve Naroff934f2762007-10-24 22:48:43 +00002646 // Now push any user supplied arguments.
2647 for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
Steve Naroff6568d4d2007-11-14 23:54:14 +00002648 Expr *userExpr = Exp->getArg(i);
Steve Naroff7e3411b2007-11-15 02:58:25 +00002649 // Make all implicit casts explicit...ICE comes in handy:-)
2650 if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
2651 // Reuse the ICE type, it is exactly what the doctor ordered.
Douglas Gregor49badde2008-10-27 19:41:14 +00002652 QualType type = ICE->getType()->isObjCQualifiedIdType()
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002653 ? Context->getObjCIdType()
Douglas Gregor49badde2008-10-27 19:41:14 +00002654 : ICE->getType();
John McCall9d125032010-01-15 18:39:57 +00002655 userExpr = NoTypeInfoCStyleCastExpr(Context, type, CastExpr::CK_Unknown,
2656 userExpr);
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002657 }
2658 // Make id<P...> cast into an 'id' cast.
Douglas Gregor6eec8e82008-10-28 15:36:24 +00002659 else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002660 if (CE->getType()->isObjCQualifiedIdType()) {
Douglas Gregor6eec8e82008-10-28 15:36:24 +00002661 while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002662 userExpr = CE->getSubExpr();
John McCall9d125032010-01-15 18:39:57 +00002663 userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
2664 CastExpr::CK_Unknown, userExpr);
Fariborz Jahaniand58fabf2007-12-18 21:33:44 +00002665 }
Mike Stump1eb44332009-09-09 15:08:12 +00002666 }
Steve Naroff6568d4d2007-11-14 23:54:14 +00002667 MsgExprs.push_back(userExpr);
Steve Naroff621edce2009-04-29 16:37:50 +00002668 // We've transferred the ownership to MsgExprs. For now, we *don't* null
2669 // out the argument in the original expression (since we aren't deleting
2670 // the ObjCMessageExpr). See RewritePropertySetter() usage for more info.
2671 //Exp->setArg(i, 0);
Steve Naroff934f2762007-10-24 22:48:43 +00002672 }
Steve Naroffab972d32007-11-04 22:37:50 +00002673 // Generate the funky cast.
2674 CastExpr *cast;
2675 llvm::SmallVector<QualType, 8> ArgTypes;
2676 QualType returnType;
Mike Stump1eb44332009-09-09 15:08:12 +00002677
Steve Naroffab972d32007-11-04 22:37:50 +00002678 // Push 'id' and 'SEL', the 2 implicit arguments.
Steve Naroffc3a438c2007-11-15 10:43:57 +00002679 if (MsgSendFlavor == MsgSendSuperFunctionDecl)
2680 ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
2681 else
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002682 ArgTypes.push_back(Context->getObjCIdType());
2683 ArgTypes.push_back(Context->getObjCSelType());
Chris Lattner89951a82009-02-20 18:43:26 +00002684 if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
Steve Naroffab972d32007-11-04 22:37:50 +00002685 // Push any user argument types.
Chris Lattner89951a82009-02-20 18:43:26 +00002686 for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
2687 E = OMD->param_end(); PI != E; ++PI) {
2688 QualType t = (*PI)->getType()->isObjCQualifiedIdType()
Mike Stump1eb44332009-09-09 15:08:12 +00002689 ? Context->getObjCIdType()
Chris Lattner89951a82009-02-20 18:43:26 +00002690 : (*PI)->getType();
Steve Naroffa206b062008-10-29 14:49:46 +00002691 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Steve Naroff01f2ffa2008-12-11 21:05:33 +00002692 if (isTopLevelBlockPointerType(t)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00002693 const BlockPointerType *BPT = t->getAs<BlockPointerType>();
Steve Naroffa206b062008-10-29 14:49:46 +00002694 t = Context->getPointerType(BPT->getPointeeType());
2695 }
Steve Naroff352336b2007-11-05 14:36:37 +00002696 ArgTypes.push_back(t);
2697 }
Chris Lattner89951a82009-02-20 18:43:26 +00002698 returnType = OMD->getResultType()->isObjCQualifiedIdType()
2699 ? Context->getObjCIdType() : OMD->getResultType();
Steve Naroffab972d32007-11-04 22:37:50 +00002700 } else {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002701 returnType = Context->getObjCIdType();
Steve Naroffab972d32007-11-04 22:37:50 +00002702 }
2703 // Get the type, we will need to reference it in a couple spots.
Steve Naroff874e2322007-11-15 10:28:18 +00002704 QualType msgSendType = MsgSendFlavor->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00002705
Steve Naroffab972d32007-11-04 22:37:50 +00002706 // Create a reference to the objc_msgSend() declaration.
Mike Stump1eb44332009-09-09 15:08:12 +00002707 DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, msgSendType,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002708 SourceLocation());
Steve Naroffab972d32007-11-04 22:37:50 +00002709
Mike Stump1eb44332009-09-09 15:08:12 +00002710 // Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
Steve Naroffab972d32007-11-04 22:37:50 +00002711 // If we don't do this cast, we get the following bizarre warning/note:
2712 // xx.m:13: warning: function called through a non-compatible type
2713 // xx.m:13: note: if this code is reached, the program will abort
John McCall9d125032010-01-15 18:39:57 +00002714 cast = NoTypeInfoCStyleCastExpr(Context,
2715 Context->getPointerType(Context->VoidTy),
2716 CastExpr::CK_Unknown, DRE);
Mike Stump1eb44332009-09-09 15:08:12 +00002717
Steve Naroffab972d32007-11-04 22:37:50 +00002718 // Now do the "normal" pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00002719 QualType castType = Context->getFunctionType(returnType,
Fariborz Jahaniand0ee6f92007-12-06 19:49:56 +00002720 &ArgTypes[0], ArgTypes.size(),
Steve Naroff2679e482008-03-18 02:02:04 +00002721 // If we don't have a method decl, force a variadic cast.
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002722 Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : true, 0);
Steve Naroffab972d32007-11-04 22:37:50 +00002723 castType = Context->getPointerType(castType);
John McCall9d125032010-01-15 18:39:57 +00002724 cast = NoTypeInfoCStyleCastExpr(Context, castType, CastExpr::CK_Unknown,
2725 cast);
Steve Naroffab972d32007-11-04 22:37:50 +00002726
2727 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00002728 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
Mike Stump1eb44332009-09-09 15:08:12 +00002729
John McCall183700f2009-09-21 23:43:11 +00002730 const FunctionType *FT = msgSendType->getAs<FunctionType>();
Ted Kremenek668bf912009-02-09 20:51:47 +00002731 CallExpr *CE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00002732 MsgExprs.size(),
Ted Kremenek668bf912009-02-09 20:51:47 +00002733 FT->getResultType(), SourceLocation());
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00002734 Stmt *ReplacingStmt = CE;
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002735 if (MsgSendStretFlavor) {
2736 // We have the method which returns a struct/union. Must also generate
2737 // call to objc_msgSend_stret and hang both varieties on a conditional
2738 // expression which dictate which one to envoke depending on size of
2739 // method's return type.
Mike Stump1eb44332009-09-09 15:08:12 +00002740
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002741 // Create a reference to the objc_msgSend_stret() declaration.
Mike Stump1eb44332009-09-09 15:08:12 +00002742 DeclRefExpr *STDRE = new (Context) DeclRefExpr(MsgSendStretFlavor, msgSendType,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002743 SourceLocation());
2744 // Need to cast objc_msgSend_stret to "void *" (see above comment).
John McCall9d125032010-01-15 18:39:57 +00002745 cast = NoTypeInfoCStyleCastExpr(Context,
2746 Context->getPointerType(Context->VoidTy),
2747 CastExpr::CK_Unknown, STDRE);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002748 // Now do the "normal" pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00002749 castType = Context->getFunctionType(returnType,
Fariborz Jahaniand0ee6f92007-12-06 19:49:56 +00002750 &ArgTypes[0], ArgTypes.size(),
Argyrios Kyrtzidis7fb5e482008-10-26 16:43:14 +00002751 Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : false, 0);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002752 castType = Context->getPointerType(castType);
John McCall9d125032010-01-15 18:39:57 +00002753 cast = NoTypeInfoCStyleCastExpr(Context, castType, CastExpr::CK_Unknown,
2754 cast);
Mike Stump1eb44332009-09-09 15:08:12 +00002755
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002756 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00002757 PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
Mike Stump1eb44332009-09-09 15:08:12 +00002758
John McCall183700f2009-09-21 23:43:11 +00002759 FT = msgSendType->getAs<FunctionType>();
Ted Kremenek668bf912009-02-09 20:51:47 +00002760 CallExpr *STCE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
Mike Stump1eb44332009-09-09 15:08:12 +00002761 MsgExprs.size(),
Ted Kremenek668bf912009-02-09 20:51:47 +00002762 FT->getResultType(), SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00002763
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002764 // Build sizeof(returnType)
Mike Stump1eb44332009-09-09 15:08:12 +00002765 SizeOfAlignOfExpr *sizeofExpr = new (Context) SizeOfAlignOfExpr(true,
John McCalla93c9342009-12-07 02:54:59 +00002766 Context->getTrivialTypeSourceInfo(returnType),
Sebastian Redl05189992008-11-11 17:56:53 +00002767 Context->getSizeType(),
2768 SourceLocation(), SourceLocation());
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002769 // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
2770 // FIXME: Value of 8 is base on ppc32/x86 ABI for the most common cases.
2771 // For X86 it is more complicated and some kind of target specific routine
2772 // is needed to decide what to do.
Mike Stump1eb44332009-09-09 15:08:12 +00002773 unsigned IntSize =
Chris Lattner98be4942008-03-05 18:54:05 +00002774 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
Mike Stump1eb44332009-09-09 15:08:12 +00002775 IntegerLiteral *limit = new (Context) IntegerLiteral(llvm::APInt(IntSize, 8),
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002776 Context->IntTy,
2777 SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00002778 BinaryOperator *lessThanExpr = new (Context) BinaryOperator(sizeofExpr, limit,
2779 BinaryOperator::LE,
2780 Context->IntTy,
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002781 SourceLocation());
2782 // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
Mike Stump1eb44332009-09-09 15:08:12 +00002783 ConditionalOperator *CondExpr =
Douglas Gregor47e1f7c2009-08-26 14:37:04 +00002784 new (Context) ConditionalOperator(lessThanExpr,
2785 SourceLocation(), CE,
2786 SourceLocation(), STCE, returnType);
Ted Kremenek8189cde2009-02-07 01:47:29 +00002787 ReplacingStmt = new (Context) ParenExpr(SourceLocation(), SourceLocation(), CondExpr);
Fariborz Jahanian80a6a5a2007-12-03 19:17:29 +00002788 }
Mike Stump1eb44332009-09-09 15:08:12 +00002789 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00002790 return ReplacingStmt;
2791}
2792
Steve Naroffb29b4272008-04-14 22:03:09 +00002793Stmt *RewriteObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00002794 Stmt *ReplacingStmt = SynthMessageExpr(Exp);
Mike Stump1eb44332009-09-09 15:08:12 +00002795
Steve Naroff934f2762007-10-24 22:48:43 +00002796 // Now do the actual rewrite.
Chris Lattnerdcbc5b02008-01-31 19:37:57 +00002797 ReplaceStmt(Exp, ReplacingStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00002798
2799 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Fariborz Jahanian33b9c4e2008-01-08 22:06:28 +00002800 return ReplacingStmt;
Steve Naroffebf2b562007-10-23 23:50:29 +00002801}
2802
Steve Naroff621edce2009-04-29 16:37:50 +00002803// typedef struct objc_object Protocol;
2804QualType RewriteObjC::getProtocolType() {
2805 if (!ProtocolTypeDecl) {
John McCalla93c9342009-12-07 02:54:59 +00002806 TypeSourceInfo *TInfo
2807 = Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
Steve Naroff621edce2009-04-29 16:37:50 +00002808 ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
Mike Stump1eb44332009-09-09 15:08:12 +00002809 SourceLocation(),
Steve Naroff621edce2009-04-29 16:37:50 +00002810 &Context->Idents.get("Protocol"),
John McCalla93c9342009-12-07 02:54:59 +00002811 TInfo);
Steve Naroff621edce2009-04-29 16:37:50 +00002812 }
2813 return Context->getTypeDeclType(ProtocolTypeDecl);
2814}
2815
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +00002816/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
Steve Naroff621edce2009-04-29 16:37:50 +00002817/// a synthesized/forward data reference (to the protocol's metadata).
2818/// The forward references (and metadata) are generated in
2819/// RewriteObjC::HandleTranslationUnit().
Steve Naroffb29b4272008-04-14 22:03:09 +00002820Stmt *RewriteObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
Steve Naroff621edce2009-04-29 16:37:50 +00002821 std::string Name = "_OBJC_PROTOCOL_" + Exp->getProtocol()->getNameAsString();
2822 IdentifierInfo *ID = &Context->Idents.get(Name);
Mike Stump1eb44332009-09-09 15:08:12 +00002823 VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
Douglas Gregor0da76df2009-11-23 11:41:28 +00002824 ID, getProtocolType(), 0, VarDecl::Extern);
Steve Naroff621edce2009-04-29 16:37:50 +00002825 DeclRefExpr *DRE = new (Context) DeclRefExpr(VD, getProtocolType(), SourceLocation());
2826 Expr *DerefExpr = new (Context) UnaryOperator(DRE, UnaryOperator::AddrOf,
2827 Context->getPointerType(DRE->getType()),
2828 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00002829 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, DerefExpr->getType(),
2830 CastExpr::CK_Unknown,
2831 DerefExpr);
Steve Naroff621edce2009-04-29 16:37:50 +00002832 ReplaceStmt(Exp, castExpr);
2833 ProtocolExprDecls.insert(Exp->getProtocol());
Mike Stump1eb44332009-09-09 15:08:12 +00002834 // delete Exp; leak for now, see RewritePropertySetter() usage for more info.
Steve Naroff621edce2009-04-29 16:37:50 +00002835 return castExpr;
Mike Stump1eb44332009-09-09 15:08:12 +00002836
Fariborz Jahanian36ee2cb2007-12-07 18:47:10 +00002837}
2838
Mike Stump1eb44332009-09-09 15:08:12 +00002839bool RewriteObjC::BufferContainsPPDirectives(const char *startBuf,
Steve Naroffbaf58c32008-05-31 14:15:04 +00002840 const char *endBuf) {
2841 while (startBuf < endBuf) {
2842 if (*startBuf == '#') {
2843 // Skip whitespace.
2844 for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf)
2845 ;
2846 if (!strncmp(startBuf, "if", strlen("if")) ||
2847 !strncmp(startBuf, "ifdef", strlen("ifdef")) ||
2848 !strncmp(startBuf, "ifndef", strlen("ifndef")) ||
2849 !strncmp(startBuf, "define", strlen("define")) ||
2850 !strncmp(startBuf, "undef", strlen("undef")) ||
2851 !strncmp(startBuf, "else", strlen("else")) ||
2852 !strncmp(startBuf, "elif", strlen("elif")) ||
2853 !strncmp(startBuf, "endif", strlen("endif")) ||
2854 !strncmp(startBuf, "pragma", strlen("pragma")) ||
2855 !strncmp(startBuf, "include", strlen("include")) ||
2856 !strncmp(startBuf, "import", strlen("import")) ||
2857 !strncmp(startBuf, "include_next", strlen("include_next")))
2858 return true;
2859 }
2860 startBuf++;
2861 }
2862 return false;
2863}
2864
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002865/// SynthesizeObjCInternalStruct - Rewrite one internal struct corresponding to
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00002866/// an objective-c class with ivars.
Steve Naroffb29b4272008-04-14 22:03:09 +00002867void RewriteObjC::SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00002868 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002869 assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
Mike Stump1eb44332009-09-09 15:08:12 +00002870 assert(CDecl->getNameAsCString() &&
Douglas Gregor2e1cd422008-11-17 14:58:09 +00002871 "Name missing in SynthesizeObjCInternalStruct");
Fariborz Jahanian212b7682007-10-31 23:08:24 +00002872 // Do not synthesize more than once.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002873 if (ObjCSynthesizedStructs.count(CDecl))
Fariborz Jahanian212b7682007-10-31 23:08:24 +00002874 return;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002875 ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
Chris Lattnerf3a7af92008-03-16 21:08:55 +00002876 int NumIvars = CDecl->ivar_size();
Steve Narofffea763e82007-11-14 19:25:57 +00002877 SourceLocation LocStart = CDecl->getLocStart();
2878 SourceLocation LocEnd = CDecl->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00002879
Steve Narofffea763e82007-11-14 19:25:57 +00002880 const char *startBuf = SM->getCharacterData(LocStart);
2881 const char *endBuf = SM->getCharacterData(LocEnd);
Mike Stump1eb44332009-09-09 15:08:12 +00002882
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00002883 // If no ivars and no root or if its root, directly or indirectly,
2884 // have no ivars (thus not synthesized) then no need to synthesize this class.
Chris Lattnerf3a7af92008-03-16 21:08:55 +00002885 if ((CDecl->isForwardDecl() || NumIvars == 0) &&
2886 (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
Chris Lattner2c78b872009-04-14 23:22:57 +00002887 endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
Chris Lattneraadaf782008-01-31 19:51:04 +00002888 ReplaceText(LocStart, endBuf-startBuf, Result.c_str(), Result.size());
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00002889 return;
2890 }
Mike Stump1eb44332009-09-09 15:08:12 +00002891
2892 // FIXME: This has potential of causing problem. If
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002893 // SynthesizeObjCInternalStruct is ever called recursively.
Fariborz Jahanian2c7038b2007-11-26 19:52:57 +00002894 Result += "\nstruct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00002895 Result += CDecl->getNameAsString();
Steve Naroff61ed9ca2008-03-10 23:16:54 +00002896 if (LangOpts.Microsoft)
2897 Result += "_IMPL";
Steve Naroff05b8c782008-03-12 00:25:36 +00002898
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00002899 if (NumIvars > 0) {
Steve Narofffea763e82007-11-14 19:25:57 +00002900 const char *cursor = strchr(startBuf, '{');
Mike Stump1eb44332009-09-09 15:08:12 +00002901 assert((cursor && endBuf)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002902 && "SynthesizeObjCInternalStruct - malformed @interface");
Steve Naroffbaf58c32008-05-31 14:15:04 +00002903 // If the buffer contains preprocessor directives, we do more fine-grained
2904 // rewrites. This is intended to fix code that looks like (which occurs in
2905 // NSURL.h, for example):
2906 //
2907 // #ifdef XYZ
2908 // @interface Foo : NSObject
2909 // #else
2910 // @interface FooBar : NSObject
2911 // #endif
2912 // {
2913 // int i;
2914 // }
2915 // @end
2916 //
2917 // This clause is segregated to avoid breaking the common case.
2918 if (BufferContainsPPDirectives(startBuf, cursor)) {
Mike Stump1eb44332009-09-09 15:08:12 +00002919 SourceLocation L = RCDecl ? CDecl->getSuperClassLoc() :
Steve Naroffbaf58c32008-05-31 14:15:04 +00002920 CDecl->getClassLoc();
2921 const char *endHeader = SM->getCharacterData(L);
Chris Lattner2c78b872009-04-14 23:22:57 +00002922 endHeader += Lexer::MeasureTokenLength(L, *SM, LangOpts);
Steve Naroffbaf58c32008-05-31 14:15:04 +00002923
Chris Lattnercafeb352009-02-20 18:18:36 +00002924 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroffbaf58c32008-05-31 14:15:04 +00002925 // advance to the end of the referenced protocols.
2926 while (endHeader < cursor && *endHeader != '>') endHeader++;
2927 endHeader++;
2928 }
2929 // rewrite the original header
2930 ReplaceText(LocStart, endHeader-startBuf, Result.c_str(), Result.size());
2931 } else {
2932 // rewrite the original header *without* disturbing the '{'
Steve Naroff17c87782009-12-04 21:36:32 +00002933 ReplaceText(LocStart, cursor-startBuf, Result.c_str(), Result.size());
Steve Naroffbaf58c32008-05-31 14:15:04 +00002934 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002935 if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
Steve Narofffea763e82007-11-14 19:25:57 +00002936 Result = "\n struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00002937 Result += RCDecl->getNameAsString();
Steve Naroff39bbd9f2008-03-12 21:09:20 +00002938 Result += "_IMPL ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00002939 Result += RCDecl->getNameAsString();
Steve Naroff819173c2008-03-12 21:22:52 +00002940 Result += "_IVARS;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00002941
Steve Narofffea763e82007-11-14 19:25:57 +00002942 // insert the super class structure definition.
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002943 SourceLocation OnePastCurly =
2944 LocStart.getFileLocWithOffset(cursor-startBuf+1);
2945 InsertText(OnePastCurly, Result.c_str(), Result.size());
Steve Narofffea763e82007-11-14 19:25:57 +00002946 }
2947 cursor++; // past '{'
Mike Stump1eb44332009-09-09 15:08:12 +00002948
Steve Narofffea763e82007-11-14 19:25:57 +00002949 // Now comment out any visibility specifiers.
2950 while (cursor < endBuf) {
2951 if (*cursor == '@') {
2952 SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Chris Lattnerdf6a51b2007-11-14 22:57:51 +00002953 // Skip whitespace.
2954 for (++cursor; cursor[0] == ' ' || cursor[0] == '\t'; ++cursor)
2955 /*scan*/;
2956
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00002957 // FIXME: presence of @public, etc. inside comment results in
2958 // this transformation as well, which is still correct c-code.
Steve Narofffea763e82007-11-14 19:25:57 +00002959 if (!strncmp(cursor, "public", strlen("public")) ||
2960 !strncmp(cursor, "private", strlen("private")) ||
Steve Naroffc5e32772008-04-04 22:34:24 +00002961 !strncmp(cursor, "package", strlen("package")) ||
Fariborz Jahanian95673922007-11-14 22:26:25 +00002962 !strncmp(cursor, "protected", strlen("protected")))
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002963 InsertText(atLoc, "// ", 3);
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00002964 }
Fariborz Jahanian95673922007-11-14 22:26:25 +00002965 // FIXME: If there are cases where '<' is used in ivar declaration part
2966 // of user code, then scan the ivar list and use needToScanForQualifiers
2967 // for type checking.
2968 else if (*cursor == '<') {
2969 SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002970 InsertText(atLoc, "/* ", 3);
Fariborz Jahanian95673922007-11-14 22:26:25 +00002971 cursor = strchr(cursor, '>');
2972 cursor++;
2973 atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002974 InsertText(atLoc, " */", 3);
Steve Naroffced80a82008-10-30 12:09:33 +00002975 } else if (*cursor == '^') { // rewrite block specifier.
2976 SourceLocation caretLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
2977 ReplaceText(caretLoc, 1, "*", 1);
Fariborz Jahanian95673922007-11-14 22:26:25 +00002978 }
Steve Narofffea763e82007-11-14 19:25:57 +00002979 cursor++;
Fariborz Jahanianfdc08a02007-10-31 17:29:28 +00002980 }
Steve Narofffea763e82007-11-14 19:25:57 +00002981 // Don't forget to add a ';'!!
Chris Lattnerf3dd57e2008-01-31 19:42:41 +00002982 InsertText(LocEnd.getFileLocWithOffset(1), ";", 1);
Steve Narofffea763e82007-11-14 19:25:57 +00002983 } else { // we don't have any instance variables - insert super struct.
Chris Lattner2c78b872009-04-14 23:22:57 +00002984 endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
Steve Narofffea763e82007-11-14 19:25:57 +00002985 Result += " {\n struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00002986 Result += RCDecl->getNameAsString();
Steve Naroff39bbd9f2008-03-12 21:09:20 +00002987 Result += "_IMPL ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00002988 Result += RCDecl->getNameAsString();
Steve Naroff819173c2008-03-12 21:22:52 +00002989 Result += "_IVARS;\n};\n";
Chris Lattneraadaf782008-01-31 19:51:04 +00002990 ReplaceText(LocStart, endBuf-startBuf, Result.c_str(), Result.size());
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00002991 }
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00002992 // Mark this struct as having been generated.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002993 if (!ObjCSynthesizedStructs.insert(CDecl))
Steve Narofffbfe8252008-05-06 18:26:51 +00002994 assert(false && "struct already synthesize- SynthesizeObjCInternalStruct");
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00002995}
2996
Ted Kremeneka526c5c2008-01-07 19:49:32 +00002997// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00002998/// class methods.
Douglas Gregor653f1b12009-04-23 01:02:12 +00002999template<typename MethodIterator>
3000void RewriteObjC::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
3001 MethodIterator MethodEnd,
Fariborz Jahanian8e991ba2007-10-25 00:14:44 +00003002 bool IsInstanceMethod,
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003003 const char *prefix,
Chris Lattner158ecb92007-10-25 17:07:24 +00003004 const char *ClassName,
3005 std::string &Result) {
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003006 if (MethodBegin == MethodEnd) return;
Mike Stump1eb44332009-09-09 15:08:12 +00003007
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003008 if (!objc_impl_method) {
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003009 /* struct _objc_method {
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003010 SEL _cmd;
3011 char *method_types;
3012 void *_imp;
3013 }
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003014 */
Chris Lattner158ecb92007-10-25 17:07:24 +00003015 Result += "\nstruct _objc_method {\n";
3016 Result += "\tSEL _cmd;\n";
3017 Result += "\tchar *method_types;\n";
3018 Result += "\tvoid *_imp;\n";
3019 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003020
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003021 objc_impl_method = true;
Fariborz Jahanian776d6ff2007-10-19 00:36:46 +00003022 }
Mike Stump1eb44332009-09-09 15:08:12 +00003023
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003024 // Build _objc_method_list for class's methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003025
Steve Naroff946a6932008-03-11 00:12:29 +00003026 /* struct {
3027 struct _objc_method_list *next_method;
3028 int method_count;
3029 struct _objc_method method_list[];
3030 }
3031 */
Douglas Gregor653f1b12009-04-23 01:02:12 +00003032 unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
Steve Naroff946a6932008-03-11 00:12:29 +00003033 Result += "\nstatic struct {\n";
3034 Result += "\tstruct _objc_method_list *next_method;\n";
3035 Result += "\tint method_count;\n";
3036 Result += "\tstruct _objc_method method_list[";
Douglas Gregor653f1b12009-04-23 01:02:12 +00003037 Result += utostr(NumMethods);
Steve Naroff946a6932008-03-11 00:12:29 +00003038 Result += "];\n} _OBJC_";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003039 Result += prefix;
3040 Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
3041 Result += "_METHODS_";
3042 Result += ClassName;
Steve Naroffdbb65432008-03-12 17:18:30 +00003043 Result += " __attribute__ ((used, section (\"__OBJC, __";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003044 Result += IsInstanceMethod ? "inst" : "cls";
3045 Result += "_meth\")))= ";
Douglas Gregor653f1b12009-04-23 01:02:12 +00003046 Result += "{\n\t0, " + utostr(NumMethods) + "\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003047
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003048 Result += "\t,{{(SEL)\"";
Chris Lattner077bf5e2008-11-24 03:33:13 +00003049 Result += (*MethodBegin)->getSelector().getAsString().c_str();
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003050 std::string MethodTypeString;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003051 Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003052 Result += "\", \"";
3053 Result += MethodTypeString;
Steve Naroff946a6932008-03-11 00:12:29 +00003054 Result += "\", (void *)";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003055 Result += MethodInternalNames[*MethodBegin];
3056 Result += "}\n";
3057 for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
3058 Result += "\t ,{(SEL)\"";
Chris Lattner077bf5e2008-11-24 03:33:13 +00003059 Result += (*MethodBegin)->getSelector().getAsString().c_str();
Fariborz Jahanian33e1d642007-10-29 22:57:28 +00003060 std::string MethodTypeString;
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003061 Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
Fariborz Jahanian33e1d642007-10-29 22:57:28 +00003062 Result += "\", \"";
3063 Result += MethodTypeString;
Steve Naroff946a6932008-03-11 00:12:29 +00003064 Result += "\", (void *)";
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003065 Result += MethodInternalNames[*MethodBegin];
Fariborz Jahanianb7908b52007-11-13 21:02:00 +00003066 Result += "}\n";
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003067 }
Chris Lattnerab4c4d52007-12-12 07:46:12 +00003068 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003069}
3070
Steve Naroff621edce2009-04-29 16:37:50 +00003071/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
Chris Lattner780f3292008-07-21 21:32:27 +00003072void RewriteObjC::
Steve Naroff621edce2009-04-29 16:37:50 +00003073RewriteObjCProtocolMetaData(ObjCProtocolDecl *PDecl, const char *prefix,
3074 const char *ClassName, std::string &Result) {
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003075 static bool objc_protocol_methods = false;
Steve Naroff621edce2009-04-29 16:37:50 +00003076
3077 // Output struct protocol_methods holder of method selector and type.
3078 if (!objc_protocol_methods && !PDecl->isForwardDecl()) {
3079 /* struct protocol_methods {
3080 SEL _cmd;
3081 char *method_types;
3082 }
3083 */
3084 Result += "\nstruct _protocol_methods {\n";
3085 Result += "\tstruct objc_selector *_cmd;\n";
3086 Result += "\tchar *method_types;\n";
3087 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003088
Steve Naroff621edce2009-04-29 16:37:50 +00003089 objc_protocol_methods = true;
3090 }
3091 // Do not synthesize the protocol more than once.
3092 if (ObjCSynthesizedProtocols.count(PDecl))
3093 return;
Mike Stump1eb44332009-09-09 15:08:12 +00003094
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003095 if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
3096 unsigned NumMethods = std::distance(PDecl->instmeth_begin(),
3097 PDecl->instmeth_end());
Steve Naroff621edce2009-04-29 16:37:50 +00003098 /* struct _objc_protocol_method_list {
3099 int protocol_method_count;
3100 struct protocol_methods protocols[];
3101 }
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003102 */
Steve Naroff621edce2009-04-29 16:37:50 +00003103 Result += "\nstatic struct {\n";
3104 Result += "\tint protocol_method_count;\n";
3105 Result += "\tstruct _protocol_methods protocol_methods[";
3106 Result += utostr(NumMethods);
3107 Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_";
3108 Result += PDecl->getNameAsString();
3109 Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= "
3110 "{\n\t" + utostr(NumMethods) + "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003111
Steve Naroff621edce2009-04-29 16:37:50 +00003112 // Output instance methods declared in this protocol.
Mike Stump1eb44332009-09-09 15:08:12 +00003113 for (ObjCProtocolDecl::instmeth_iterator
3114 I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
Steve Naroff621edce2009-04-29 16:37:50 +00003115 I != E; ++I) {
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003116 if (I == PDecl->instmeth_begin())
Steve Naroff621edce2009-04-29 16:37:50 +00003117 Result += "\t ,{{(struct objc_selector *)\"";
3118 else
3119 Result += "\t ,{(struct objc_selector *)\"";
3120 Result += (*I)->getSelector().getAsString().c_str();
3121 std::string MethodTypeString;
3122 Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
3123 Result += "\", \"";
3124 Result += MethodTypeString;
3125 Result += "\"}\n";
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003126 }
Steve Naroff621edce2009-04-29 16:37:50 +00003127 Result += "\t }\n};\n";
3128 }
Mike Stump1eb44332009-09-09 15:08:12 +00003129
Steve Naroff621edce2009-04-29 16:37:50 +00003130 // Output class methods declared in this protocol.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003131 unsigned NumMethods = std::distance(PDecl->classmeth_begin(),
3132 PDecl->classmeth_end());
Steve Naroff621edce2009-04-29 16:37:50 +00003133 if (NumMethods > 0) {
3134 /* struct _objc_protocol_method_list {
3135 int protocol_method_count;
3136 struct protocol_methods protocols[];
3137 }
3138 */
3139 Result += "\nstatic struct {\n";
3140 Result += "\tint protocol_method_count;\n";
3141 Result += "\tstruct _protocol_methods protocol_methods[";
3142 Result += utostr(NumMethods);
3143 Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_";
3144 Result += PDecl->getNameAsString();
3145 Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
3146 "{\n\t";
3147 Result += utostr(NumMethods);
3148 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003149
Steve Naroff621edce2009-04-29 16:37:50 +00003150 // Output instance methods declared in this protocol.
Mike Stump1eb44332009-09-09 15:08:12 +00003151 for (ObjCProtocolDecl::classmeth_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003152 I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
Steve Naroff621edce2009-04-29 16:37:50 +00003153 I != E; ++I) {
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003154 if (I == PDecl->classmeth_begin())
Steve Naroff621edce2009-04-29 16:37:50 +00003155 Result += "\t ,{{(struct objc_selector *)\"";
3156 else
3157 Result += "\t ,{(struct objc_selector *)\"";
3158 Result += (*I)->getSelector().getAsString().c_str();
3159 std::string MethodTypeString;
3160 Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
3161 Result += "\", \"";
3162 Result += MethodTypeString;
3163 Result += "\"}\n";
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003164 }
Steve Naroff621edce2009-04-29 16:37:50 +00003165 Result += "\t }\n};\n";
3166 }
3167
3168 // Output:
3169 /* struct _objc_protocol {
3170 // Objective-C 1.0 extensions
3171 struct _objc_protocol_extension *isa;
3172 char *protocol_name;
3173 struct _objc_protocol **protocol_list;
3174 struct _objc_protocol_method_list *instance_methods;
3175 struct _objc_protocol_method_list *class_methods;
Mike Stump1eb44332009-09-09 15:08:12 +00003176 };
Steve Naroff621edce2009-04-29 16:37:50 +00003177 */
3178 static bool objc_protocol = false;
3179 if (!objc_protocol) {
3180 Result += "\nstruct _objc_protocol {\n";
3181 Result += "\tstruct _objc_protocol_extension *isa;\n";
3182 Result += "\tchar *protocol_name;\n";
3183 Result += "\tstruct _objc_protocol **protocol_list;\n";
3184 Result += "\tstruct _objc_protocol_method_list *instance_methods;\n";
3185 Result += "\tstruct _objc_protocol_method_list *class_methods;\n";
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003186 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003187
Steve Naroff621edce2009-04-29 16:37:50 +00003188 objc_protocol = true;
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003189 }
Mike Stump1eb44332009-09-09 15:08:12 +00003190
Steve Naroff621edce2009-04-29 16:37:50 +00003191 Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_";
3192 Result += PDecl->getNameAsString();
3193 Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= "
3194 "{\n\t0, \"";
3195 Result += PDecl->getNameAsString();
3196 Result += "\", 0, ";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003197 if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
Steve Naroff621edce2009-04-29 16:37:50 +00003198 Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
3199 Result += PDecl->getNameAsString();
3200 Result += ", ";
3201 }
3202 else
3203 Result += "0, ";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003204 if (PDecl->classmeth_begin() != PDecl->classmeth_end()) {
Steve Naroff621edce2009-04-29 16:37:50 +00003205 Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_";
3206 Result += PDecl->getNameAsString();
3207 Result += "\n";
3208 }
3209 else
3210 Result += "0\n";
3211 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003212
Steve Naroff621edce2009-04-29 16:37:50 +00003213 // Mark this protocol as having been generated.
3214 if (!ObjCSynthesizedProtocols.insert(PDecl))
3215 assert(false && "protocol already synthesized");
3216
3217}
3218
3219void RewriteObjC::
3220RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Protocols,
3221 const char *prefix, const char *ClassName,
3222 std::string &Result) {
3223 if (Protocols.empty()) return;
Mike Stump1eb44332009-09-09 15:08:12 +00003224
Steve Naroff621edce2009-04-29 16:37:50 +00003225 for (unsigned i = 0; i != Protocols.size(); i++)
3226 RewriteObjCProtocolMetaData(Protocols[i], prefix, ClassName, Result);
3227
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003228 // Output the top lovel protocol meta-data for the class.
3229 /* struct _objc_protocol_list {
3230 struct _objc_protocol_list *next;
3231 int protocol_count;
3232 struct _objc_protocol *class_protocols[];
3233 }
3234 */
3235 Result += "\nstatic struct {\n";
3236 Result += "\tstruct _objc_protocol_list *next;\n";
3237 Result += "\tint protocol_count;\n";
3238 Result += "\tstruct _objc_protocol *class_protocols[";
3239 Result += utostr(Protocols.size());
3240 Result += "];\n} _OBJC_";
3241 Result += prefix;
3242 Result += "_PROTOCOLS_";
3243 Result += ClassName;
3244 Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
3245 "{\n\t0, ";
3246 Result += utostr(Protocols.size());
3247 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003248
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003249 Result += "\t,{&_OBJC_PROTOCOL_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003250 Result += Protocols[0]->getNameAsString();
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003251 Result += " \n";
Mike Stump1eb44332009-09-09 15:08:12 +00003252
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003253 for (unsigned i = 1; i != Protocols.size(); i++) {
3254 Result += "\t ,&_OBJC_PROTOCOL_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003255 Result += Protocols[i]->getNameAsString();
Chris Lattner9d0aaa12008-07-21 21:33:21 +00003256 Result += "\n";
3257 }
3258 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003259}
3260
Steve Naroff621edce2009-04-29 16:37:50 +00003261
Mike Stump1eb44332009-09-09 15:08:12 +00003262/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003263/// implementation.
Steve Naroffb29b4272008-04-14 22:03:09 +00003264void RewriteObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003265 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003266 ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003267 // Find category declaration for this implementation.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003268 ObjCCategoryDecl *CDecl;
Mike Stump1eb44332009-09-09 15:08:12 +00003269 for (CDecl = ClassDecl->getCategoryList(); CDecl;
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003270 CDecl = CDecl->getNextClassCategory())
3271 if (CDecl->getIdentifier() == IDecl->getIdentifier())
3272 break;
Mike Stump1eb44332009-09-09 15:08:12 +00003273
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003274 std::string FullCategoryName = ClassDecl->getNameAsString();
Chris Lattnereb44eee2007-12-23 01:40:15 +00003275 FullCategoryName += '_';
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003276 FullCategoryName += IDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003277
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003278 // Build _objc_method_list for class's instance methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003279 llvm::SmallVector<ObjCMethodDecl *, 32>
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003280 InstanceMethods(IDecl->instmeth_begin(), IDecl->instmeth_end());
Douglas Gregor653f1b12009-04-23 01:02:12 +00003281
3282 // If any of our property implementations have associated getters or
3283 // setters, produce metadata for them as well.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003284 for (ObjCImplDecl::propimpl_iterator Prop = IDecl->propimpl_begin(),
3285 PropEnd = IDecl->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00003286 Prop != PropEnd; ++Prop) {
3287 if ((*Prop)->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
3288 continue;
3289 if (!(*Prop)->getPropertyIvarDecl())
3290 continue;
3291 ObjCPropertyDecl *PD = (*Prop)->getPropertyDecl();
3292 if (!PD)
3293 continue;
3294 if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
3295 InstanceMethods.push_back(Getter);
3296 if (PD->isReadOnly())
3297 continue;
3298 if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
3299 InstanceMethods.push_back(Setter);
3300 }
3301 RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
Chris Lattnereb44eee2007-12-23 01:40:15 +00003302 true, "CATEGORY_", FullCategoryName.c_str(),
3303 Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003304
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003305 // Build _objc_method_list for class's class methods if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003306 RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
Chris Lattnereb44eee2007-12-23 01:40:15 +00003307 false, "CATEGORY_", FullCategoryName.c_str(),
3308 Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003309
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003310 // Protocols referenced in class declaration?
Fariborz Jahanianbac97d42007-11-13 22:09:49 +00003311 // Null CDecl is case of a category implementation with no category interface
3312 if (CDecl)
Steve Naroff621edce2009-04-29 16:37:50 +00003313 RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(), "CATEGORY",
3314 FullCategoryName.c_str(), Result);
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003315 /* struct _objc_category {
3316 char *category_name;
3317 char *class_name;
3318 struct _objc_method_list *instance_methods;
3319 struct _objc_method_list *class_methods;
3320 struct _objc_protocol_list *protocols;
3321 // Objective-C 1.0 extensions
3322 uint32_t size; // sizeof (struct _objc_category)
Mike Stump1eb44332009-09-09 15:08:12 +00003323 struct _objc_property_list *instance_properties; // category's own
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003324 // @property decl.
Mike Stump1eb44332009-09-09 15:08:12 +00003325 };
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003326 */
Mike Stump1eb44332009-09-09 15:08:12 +00003327
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003328 static bool objc_category = false;
3329 if (!objc_category) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003330 Result += "\nstruct _objc_category {\n";
3331 Result += "\tchar *category_name;\n";
3332 Result += "\tchar *class_name;\n";
3333 Result += "\tstruct _objc_method_list *instance_methods;\n";
3334 Result += "\tstruct _objc_method_list *class_methods;\n";
3335 Result += "\tstruct _objc_protocol_list *protocols;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003336 Result += "\tunsigned int size;\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003337 Result += "\tstruct _objc_property_list *instance_properties;\n";
3338 Result += "};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003339 objc_category = true;
Fariborz Jahaniane887c092007-10-22 21:41:37 +00003340 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003341 Result += "\nstatic struct _objc_category _OBJC_CATEGORY_";
3342 Result += FullCategoryName;
Steve Naroffdbb65432008-03-12 17:18:30 +00003343 Result += " __attribute__ ((used, section (\"__OBJC, __category\")))= {\n\t\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003344 Result += IDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003345 Result += "\"\n\t, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003346 Result += ClassDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003347 Result += "\"\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003348
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003349 if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003350 Result += "\t, (struct _objc_method_list *)"
3351 "&_OBJC_CATEGORY_INSTANCE_METHODS_";
3352 Result += FullCategoryName;
3353 Result += "\n";
3354 }
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003355 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003356 Result += "\t, 0\n";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003357 if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003358 Result += "\t, (struct _objc_method_list *)"
3359 "&_OBJC_CATEGORY_CLASS_METHODS_";
3360 Result += FullCategoryName;
3361 Result += "\n";
3362 }
3363 else
3364 Result += "\t, 0\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003365
Chris Lattnercafeb352009-02-20 18:18:36 +00003366 if (CDecl && CDecl->protocol_begin() != CDecl->protocol_end()) {
Mike Stump1eb44332009-09-09 15:08:12 +00003367 Result += "\t, (struct _objc_protocol_list *)&_OBJC_CATEGORY_PROTOCOLS_";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003368 Result += FullCategoryName;
3369 Result += "\n";
3370 }
3371 else
3372 Result += "\t, 0\n";
3373 Result += "\t, sizeof(struct _objc_category), 0\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003374}
3375
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003376/// SynthesizeIvarOffsetComputation - This rutine synthesizes computation of
3377/// ivar offset.
Mike Stump1eb44332009-09-09 15:08:12 +00003378void RewriteObjC::SynthesizeIvarOffsetComputation(ObjCImplementationDecl *IDecl,
3379 ObjCIvarDecl *ivar,
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003380 std::string &Result) {
Steve Naroff8f3b2652008-07-16 18:22:22 +00003381 if (ivar->isBitField()) {
3382 // FIXME: The hack below doesn't work for bitfields. For now, we simply
3383 // place all bitfields at offset 0.
3384 Result += "0";
3385 } else {
3386 Result += "__OFFSETOFIVAR__(struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003387 Result += IDecl->getNameAsString();
Steve Naroff8f3b2652008-07-16 18:22:22 +00003388 if (LangOpts.Microsoft)
3389 Result += "_IMPL";
3390 Result += ", ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003391 Result += ivar->getNameAsString();
Steve Naroff8f3b2652008-07-16 18:22:22 +00003392 Result += ")";
3393 }
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003394}
3395
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003396//===----------------------------------------------------------------------===//
3397// Meta Data Emission
3398//===----------------------------------------------------------------------===//
3399
Steve Naroffb29b4272008-04-14 22:03:09 +00003400void RewriteObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003401 std::string &Result) {
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003402 ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
Mike Stump1eb44332009-09-09 15:08:12 +00003403
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003404 // Explictly declared @interface's are already synthesized.
Steve Naroff33feeb02009-04-20 20:09:33 +00003405 if (CDecl->isImplicitInterfaceDecl()) {
Mike Stump1eb44332009-09-09 15:08:12 +00003406 // FIXME: Implementation of a class with no @interface (legacy) doese not
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003407 // produce correct synthesis as yet.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003408 SynthesizeObjCInternalStruct(CDecl, Result);
Fariborz Jahanianebe668f2007-11-26 20:59:57 +00003409 }
Mike Stump1eb44332009-09-09 15:08:12 +00003410
Chris Lattnerbe6df082007-12-12 07:56:42 +00003411 // Build _objc_ivar_list metadata for classes ivars if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003412 unsigned NumIvars = !IDecl->ivar_empty()
Mike Stump1eb44332009-09-09 15:08:12 +00003413 ? IDecl->ivar_size()
Chris Lattnerf3a7af92008-03-16 21:08:55 +00003414 : (CDecl ? CDecl->ivar_size() : 0);
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003415 if (NumIvars > 0) {
3416 static bool objc_ivar = false;
3417 if (!objc_ivar) {
3418 /* struct _objc_ivar {
3419 char *ivar_name;
3420 char *ivar_type;
3421 int ivar_offset;
Mike Stump1eb44332009-09-09 15:08:12 +00003422 };
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003423 */
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003424 Result += "\nstruct _objc_ivar {\n";
3425 Result += "\tchar *ivar_name;\n";
3426 Result += "\tchar *ivar_type;\n";
3427 Result += "\tint ivar_offset;\n";
3428 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003429
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003430 objc_ivar = true;
3431 }
3432
Steve Naroff946a6932008-03-11 00:12:29 +00003433 /* struct {
3434 int ivar_count;
3435 struct _objc_ivar ivar_list[nIvars];
Mike Stump1eb44332009-09-09 15:08:12 +00003436 };
Steve Naroff946a6932008-03-11 00:12:29 +00003437 */
Mike Stump1eb44332009-09-09 15:08:12 +00003438 Result += "\nstatic struct {\n";
Steve Naroff946a6932008-03-11 00:12:29 +00003439 Result += "\tint ivar_count;\n";
3440 Result += "\tstruct _objc_ivar ivar_list[";
3441 Result += utostr(NumIvars);
3442 Result += "];\n} _OBJC_INSTANCE_VARIABLES_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003443 Result += IDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003444 Result += " __attribute__ ((used, section (\"__OBJC, __instance_vars\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003445 "{\n\t";
3446 Result += utostr(NumIvars);
3447 Result += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003448
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003449 ObjCInterfaceDecl::ivar_iterator IVI, IVE;
Douglas Gregor8f36aba2009-04-23 03:23:08 +00003450 llvm::SmallVector<ObjCIvarDecl *, 8> IVars;
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003451 if (!IDecl->ivar_empty()) {
Mike Stump1eb44332009-09-09 15:08:12 +00003452 for (ObjCImplementationDecl::ivar_iterator
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003453 IV = IDecl->ivar_begin(), IVEnd = IDecl->ivar_end();
Douglas Gregor8f36aba2009-04-23 03:23:08 +00003454 IV != IVEnd; ++IV)
3455 IVars.push_back(*IV);
3456 IVI = IVars.begin();
3457 IVE = IVars.end();
Chris Lattnerbe6df082007-12-12 07:56:42 +00003458 } else {
3459 IVI = CDecl->ivar_begin();
3460 IVE = CDecl->ivar_end();
3461 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003462 Result += "\t,{{\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003463 Result += (*IVI)->getNameAsString();
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003464 Result += "\", \"";
Steve Naroff621edce2009-04-29 16:37:50 +00003465 std::string TmpString, StrEncoding;
3466 Context->getObjCEncodingForType((*IVI)->getType(), TmpString, *IVI);
3467 QuoteDoublequotes(TmpString, StrEncoding);
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003468 Result += StrEncoding;
3469 Result += "\", ";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003470 SynthesizeIvarOffsetComputation(IDecl, *IVI, Result);
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003471 Result += "}\n";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003472 for (++IVI; IVI != IVE; ++IVI) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003473 Result += "\t ,{\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003474 Result += (*IVI)->getNameAsString();
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003475 Result += "\", \"";
Steve Naroff621edce2009-04-29 16:37:50 +00003476 std::string TmpString, StrEncoding;
3477 Context->getObjCEncodingForType((*IVI)->getType(), TmpString, *IVI);
3478 QuoteDoublequotes(TmpString, StrEncoding);
Fariborz Jahanian160eb652007-10-29 17:16:25 +00003479 Result += StrEncoding;
3480 Result += "\", ";
Chris Lattnerbe6df082007-12-12 07:56:42 +00003481 SynthesizeIvarOffsetComputation(IDecl, (*IVI), Result);
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003482 Result += "}\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003483 }
Mike Stump1eb44332009-09-09 15:08:12 +00003484
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003485 Result += "\t }\n};\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003486 }
Mike Stump1eb44332009-09-09 15:08:12 +00003487
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003488 // Build _objc_method_list for class's instance methods if needed
Mike Stump1eb44332009-09-09 15:08:12 +00003489 llvm::SmallVector<ObjCMethodDecl *, 32>
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003490 InstanceMethods(IDecl->instmeth_begin(), IDecl->instmeth_end());
Douglas Gregor653f1b12009-04-23 01:02:12 +00003491
3492 // If any of our property implementations have associated getters or
3493 // setters, produce metadata for them as well.
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003494 for (ObjCImplDecl::propimpl_iterator Prop = IDecl->propimpl_begin(),
3495 PropEnd = IDecl->propimpl_end();
Douglas Gregor653f1b12009-04-23 01:02:12 +00003496 Prop != PropEnd; ++Prop) {
3497 if ((*Prop)->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
3498 continue;
3499 if (!(*Prop)->getPropertyIvarDecl())
3500 continue;
3501 ObjCPropertyDecl *PD = (*Prop)->getPropertyDecl();
3502 if (!PD)
3503 continue;
3504 if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
3505 InstanceMethods.push_back(Getter);
3506 if (PD->isReadOnly())
3507 continue;
3508 if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
3509 InstanceMethods.push_back(Setter);
3510 }
3511 RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
Chris Lattner8ec03f52008-11-24 03:54:41 +00003512 true, "", IDecl->getNameAsCString(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003513
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003514 // Build _objc_method_list for class's class methods if needed
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003515 RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
Chris Lattner8ec03f52008-11-24 03:54:41 +00003516 false, "", IDecl->getNameAsCString(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003517
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003518 // Protocols referenced in class declaration?
Steve Naroff621edce2009-04-29 16:37:50 +00003519 RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(),
3520 "CLASS", CDecl->getNameAsCString(), Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003521
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003522 // Declaration of class/meta-class metadata
3523 /* struct _objc_class {
3524 struct _objc_class *isa; // or const char *root_class_name when metadata
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003525 const char *super_class_name;
3526 char *name;
3527 long version;
3528 long info;
3529 long instance_size;
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003530 struct _objc_ivar_list *ivars;
3531 struct _objc_method_list *methods;
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003532 struct objc_cache *cache;
3533 struct objc_protocol_list *protocols;
3534 const char *ivar_layout;
3535 struct _objc_class_ext *ext;
Mike Stump1eb44332009-09-09 15:08:12 +00003536 };
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003537 */
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003538 static bool objc_class = false;
3539 if (!objc_class) {
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003540 Result += "\nstruct _objc_class {\n";
3541 Result += "\tstruct _objc_class *isa;\n";
3542 Result += "\tconst char *super_class_name;\n";
3543 Result += "\tchar *name;\n";
3544 Result += "\tlong version;\n";
3545 Result += "\tlong info;\n";
3546 Result += "\tlong instance_size;\n";
3547 Result += "\tstruct _objc_ivar_list *ivars;\n";
3548 Result += "\tstruct _objc_method_list *methods;\n";
3549 Result += "\tstruct objc_cache *cache;\n";
3550 Result += "\tstruct _objc_protocol_list *protocols;\n";
3551 Result += "\tconst char *ivar_layout;\n";
3552 Result += "\tstruct _objc_class_ext *ext;\n";
3553 Result += "};\n";
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003554 objc_class = true;
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003555 }
Mike Stump1eb44332009-09-09 15:08:12 +00003556
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003557 // Meta-class metadata generation.
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003558 ObjCInterfaceDecl *RootClass = 0;
3559 ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003560 while (SuperClass) {
3561 RootClass = SuperClass;
3562 SuperClass = SuperClass->getSuperClass();
3563 }
3564 SuperClass = CDecl->getSuperClass();
Mike Stump1eb44332009-09-09 15:08:12 +00003565
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003566 Result += "\nstatic struct _objc_class _OBJC_METACLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003567 Result += CDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003568 Result += " __attribute__ ((used, section (\"__OBJC, __meta_class\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003569 "{\n\t(struct _objc_class *)\"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003570 Result += (RootClass ? RootClass->getNameAsString() : CDecl->getNameAsString());
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003571 Result += "\"";
3572
3573 if (SuperClass) {
3574 Result += ", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003575 Result += SuperClass->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003576 Result += "\", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003577 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003578 Result += "\"";
3579 }
3580 else {
3581 Result += ", 0, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003582 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003583 Result += "\"";
3584 }
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003585 // Set 'ivars' field for root class to 0. ObjC1 runtime does not use it.
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003586 // 'info' field is initialized to CLS_META(2) for metaclass
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003587 Result += ", 0,2, sizeof(struct _objc_class), 0";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003588 if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
Steve Naroff23f41272008-03-11 18:14:26 +00003589 Result += "\n\t, (struct _objc_method_list *)&_OBJC_CLASS_METHODS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003590 Result += IDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003591 Result += "\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003592 }
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003593 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003594 Result += ", 0\n";
Chris Lattnercafeb352009-02-20 18:18:36 +00003595 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003596 Result += "\t,0, (struct _objc_protocol_list *)&_OBJC_CLASS_PROTOCOLS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003597 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003598 Result += ",0,0\n";
3599 }
Fariborz Jahanian454cb012007-10-24 20:54:23 +00003600 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003601 Result += "\t,0,0,0,0\n";
3602 Result += "};\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003603
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003604 // class metadata generation.
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003605 Result += "\nstatic struct _objc_class _OBJC_CLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003606 Result += CDecl->getNameAsString();
Steve Naroffdbb65432008-03-12 17:18:30 +00003607 Result += " __attribute__ ((used, section (\"__OBJC, __class\")))= "
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003608 "{\n\t&_OBJC_METACLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003609 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003610 if (SuperClass) {
3611 Result += ", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003612 Result += SuperClass->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003613 Result += "\", \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003614 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003615 Result += "\"";
3616 }
3617 else {
3618 Result += ", 0, \"";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003619 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003620 Result += "\"";
3621 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003622 // 'info' field is initialized to CLS_CLASS(1) for class
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003623 Result += ", 0,1";
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003624 if (!ObjCSynthesizedStructs.count(CDecl))
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003625 Result += ",0";
3626 else {
3627 // class has size. Must synthesize its size.
Fariborz Jahanian909f02a2007-11-05 17:47:33 +00003628 Result += ",sizeof(struct ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003629 Result += CDecl->getNameAsString();
Steve Naroffba9ac4e2008-03-10 23:33:22 +00003630 if (LangOpts.Microsoft)
3631 Result += "_IMPL";
Fariborz Jahanian4d733d32007-10-26 23:09:28 +00003632 Result += ")";
3633 }
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003634 if (NumIvars > 0) {
Steve Naroffc0a123c2008-03-11 17:37:02 +00003635 Result += ", (struct _objc_ivar_list *)&_OBJC_INSTANCE_VARIABLES_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003636 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003637 Result += "\n\t";
3638 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003639 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003640 Result += ",0";
Argyrios Kyrtzidis17945a02009-06-30 02:36:12 +00003641 if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
Steve Naroff946a6932008-03-11 00:12:29 +00003642 Result += ", (struct _objc_method_list *)&_OBJC_INSTANCE_METHODS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003643 Result += CDecl->getNameAsString();
Mike Stump1eb44332009-09-09 15:08:12 +00003644 Result += ", 0\n\t";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003645 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003646 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003647 Result += ",0,0";
Chris Lattnercafeb352009-02-20 18:18:36 +00003648 if (CDecl->protocol_begin() != CDecl->protocol_end()) {
Steve Naroff8eb4a5e2008-03-12 01:06:30 +00003649 Result += ", (struct _objc_protocol_list*)&_OBJC_CLASS_PROTOCOLS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003650 Result += CDecl->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003651 Result += ", 0,0\n";
3652 }
Fariborz Jahaniandeef5182007-10-23 18:53:48 +00003653 else
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003654 Result += ",0,0,0\n";
3655 Result += "};\n";
Fariborz Jahanian9f0a1cb2007-10-23 00:02:02 +00003656}
Fariborz Jahanianf4d331d2007-10-18 22:09:03 +00003657
Fariborz Jahanian7a3279d2007-11-13 19:21:13 +00003658/// RewriteImplementations - This routine rewrites all method implementations
3659/// and emits meta-data.
3660
Steve Narofface66252008-11-13 20:07:04 +00003661void RewriteObjC::RewriteImplementations() {
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003662 int ClsDefCount = ClassImplementation.size();
3663 int CatDefCount = CategoryImplementation.size();
Mike Stump1eb44332009-09-09 15:08:12 +00003664
Fariborz Jahanian7a3279d2007-11-13 19:21:13 +00003665 // Rewrite implemented methods
3666 for (int i = 0; i < ClsDefCount; i++)
3667 RewriteImplementationDecl(ClassImplementation[i]);
Mike Stump1eb44332009-09-09 15:08:12 +00003668
Fariborz Jahanian66d6b292007-11-13 20:04:28 +00003669 for (int i = 0; i < CatDefCount; i++)
3670 RewriteImplementationDecl(CategoryImplementation[i]);
Steve Narofface66252008-11-13 20:07:04 +00003671}
Mike Stump1eb44332009-09-09 15:08:12 +00003672
Steve Narofface66252008-11-13 20:07:04 +00003673void RewriteObjC::SynthesizeMetaDataIntoBuffer(std::string &Result) {
3674 int ClsDefCount = ClassImplementation.size();
3675 int CatDefCount = CategoryImplementation.size();
3676
Steve Naroff5df5b762008-05-07 21:23:49 +00003677 // This is needed for determining instance variable offsets.
Fariborz Jahanianc98cbb42010-01-07 18:31:42 +00003678 Result += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long) &((TYPE *)0)->MEMBER)\n";
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003679 // For each implemented class, write out all its meta data.
Fariborz Jahanianf4d331d2007-10-18 22:09:03 +00003680 for (int i = 0; i < ClsDefCount; i++)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003681 RewriteObjCClassMetaData(ClassImplementation[i], Result);
Mike Stump1eb44332009-09-09 15:08:12 +00003682
Fariborz Jahanian2e6d9352007-10-24 19:23:36 +00003683 // For each implemented category, write out all its meta data.
3684 for (int i = 0; i < CatDefCount; i++)
Ted Kremeneka526c5c2008-01-07 19:49:32 +00003685 RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
Steve Naroff621edce2009-04-29 16:37:50 +00003686
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003687 // Write objc_symtab metadata
3688 /*
3689 struct _objc_symtab
3690 {
3691 long sel_ref_cnt;
3692 SEL *refs;
3693 short cls_def_cnt;
3694 short cat_def_cnt;
3695 void *defs[cls_def_cnt + cat_def_cnt];
Mike Stump1eb44332009-09-09 15:08:12 +00003696 };
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003697 */
Mike Stump1eb44332009-09-09 15:08:12 +00003698
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003699 Result += "\nstruct _objc_symtab {\n";
3700 Result += "\tlong sel_ref_cnt;\n";
3701 Result += "\tSEL *refs;\n";
3702 Result += "\tshort cls_def_cnt;\n";
3703 Result += "\tshort cat_def_cnt;\n";
3704 Result += "\tvoid *defs[" + utostr(ClsDefCount + CatDefCount)+ "];\n";
3705 Result += "};\n\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003706
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003707 Result += "static struct _objc_symtab "
Steve Naroffdbb65432008-03-12 17:18:30 +00003708 "_OBJC_SYMBOLS __attribute__((used, section (\"__OBJC, __symbols\")))= {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003709 Result += "\t0, 0, " + utostr(ClsDefCount)
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003710 + ", " + utostr(CatDefCount) + "\n";
3711 for (int i = 0; i < ClsDefCount; i++) {
3712 Result += "\t,&_OBJC_CLASS_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003713 Result += ClassImplementation[i]->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003714 Result += "\n";
3715 }
Mike Stump1eb44332009-09-09 15:08:12 +00003716
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003717 for (int i = 0; i < CatDefCount; i++) {
3718 Result += "\t,&_OBJC_CATEGORY_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003719 Result += CategoryImplementation[i]->getClassInterface()->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003720 Result += "_";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003721 Result += CategoryImplementation[i]->getNameAsString();
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003722 Result += "\n";
3723 }
Mike Stump1eb44332009-09-09 15:08:12 +00003724
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003725 Result += "};\n\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003726
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003727 // Write objc_module metadata
Mike Stump1eb44332009-09-09 15:08:12 +00003728
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003729 /*
3730 struct _objc_module {
3731 long version;
3732 long size;
3733 const char *name;
3734 struct _objc_symtab *symtab;
3735 }
3736 */
Mike Stump1eb44332009-09-09 15:08:12 +00003737
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003738 Result += "\nstruct _objc_module {\n";
3739 Result += "\tlong version;\n";
3740 Result += "\tlong size;\n";
3741 Result += "\tconst char *name;\n";
3742 Result += "\tstruct _objc_symtab *symtab;\n";
3743 Result += "};\n\n";
3744 Result += "static struct _objc_module "
Steve Naroffdbb65432008-03-12 17:18:30 +00003745 "_OBJC_MODULES __attribute__ ((used, section (\"__OBJC, __module_info\")))= {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003746 Result += "\t" + utostr(OBJC_ABI_VERSION) +
Fariborz Jahanian26e4cd32007-10-26 19:46:17 +00003747 ", sizeof(struct _objc_module), \"\", &_OBJC_SYMBOLS\n";
Fariborz Jahanianccd87b02007-10-25 20:55:25 +00003748 Result += "};\n\n";
Steve Naroff4f943c22008-03-10 20:43:59 +00003749
3750 if (LangOpts.Microsoft) {
Steve Naroff621edce2009-04-29 16:37:50 +00003751 if (ProtocolExprDecls.size()) {
3752 Result += "#pragma section(\".objc_protocol$B\",long,read,write)\n";
3753 Result += "#pragma data_seg(push, \".objc_protocol$B\")\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003754 for (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
Steve Naroff621edce2009-04-29 16:37:50 +00003755 E = ProtocolExprDecls.end(); I != E; ++I) {
3756 Result += "static struct _objc_protocol *_POINTER_OBJC_PROTOCOL_";
3757 Result += (*I)->getNameAsString();
3758 Result += " = &_OBJC_PROTOCOL_";
3759 Result += (*I)->getNameAsString();
3760 Result += ";\n";
3761 }
3762 Result += "#pragma data_seg(pop)\n\n";
3763 }
Steve Naroff4f943c22008-03-10 20:43:59 +00003764 Result += "#pragma section(\".objc_module_info$B\",long,read,write)\n";
Steve Naroff19190322008-05-07 00:06:16 +00003765 Result += "#pragma data_seg(push, \".objc_module_info$B\")\n";
Steve Naroff4f943c22008-03-10 20:43:59 +00003766 Result += "static struct _objc_module *_POINTER_OBJC_MODULES = ";
3767 Result += "&_OBJC_MODULES;\n";
3768 Result += "#pragma data_seg(pop)\n\n";
3769 }
Fariborz Jahanian545b9ae2007-10-18 19:23:00 +00003770}
Chris Lattner311ff022007-10-16 22:36:42 +00003771
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00003772void RewriteObjC::RewriteByRefString(std::string &ResultStr,
3773 const std::string &Name,
3774 ValueDecl *VD) {
3775 assert(BlockByRefDeclNo.count(VD) &&
3776 "RewriteByRefString: ByRef decl missing");
3777 ResultStr += "struct __Block_byref_" + Name +
3778 "_" + utostr(BlockByRefDeclNo[VD]) ;
3779}
3780
Steve Naroff54055232008-10-27 17:20:55 +00003781std::string RewriteObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
3782 const char *funcName,
3783 std::string Tag) {
3784 const FunctionType *AFT = CE->getFunctionType();
3785 QualType RT = AFT->getResultType();
3786 std::string StructRef = "struct " + Tag;
3787 std::string S = "static " + RT.getAsString() + " __" +
3788 funcName + "_" + "block_func_" + utostr(i);
Argyrios Kyrtzidisef177822008-04-17 14:40:12 +00003789
Steve Naroff54055232008-10-27 17:20:55 +00003790 BlockDecl *BD = CE->getBlockDecl();
Mike Stump1eb44332009-09-09 15:08:12 +00003791
Douglas Gregor72564e72009-02-26 23:50:07 +00003792 if (isa<FunctionNoProtoType>(AFT)) {
Mike Stump1eb44332009-09-09 15:08:12 +00003793 // No user-supplied arguments. Still need to pass in a pointer to the
Steve Naroffdf8570d2009-02-02 17:19:26 +00003794 // block (to reference imported block decl refs).
3795 S += "(" + StructRef + " *__cself)";
Steve Naroff54055232008-10-27 17:20:55 +00003796 } else if (BD->param_empty()) {
3797 S += "(" + StructRef + " *__cself)";
3798 } else {
Douglas Gregor72564e72009-02-26 23:50:07 +00003799 const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
Steve Naroff54055232008-10-27 17:20:55 +00003800 assert(FT && "SynthesizeBlockFunc: No function proto");
3801 S += '(';
3802 // first add the implicit argument.
3803 S += StructRef + " *__cself, ";
3804 std::string ParamStr;
3805 for (BlockDecl::param_iterator AI = BD->param_begin(),
3806 E = BD->param_end(); AI != E; ++AI) {
3807 if (AI != BD->param_begin()) S += ", ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003808 ParamStr = (*AI)->getNameAsString();
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00003809 (*AI)->getType().getAsStringInternal(ParamStr, Context->PrintingPolicy);
Steve Naroff54055232008-10-27 17:20:55 +00003810 S += ParamStr;
3811 }
3812 if (FT->isVariadic()) {
3813 if (!BD->param_empty()) S += ", ";
3814 S += "...";
3815 }
3816 S += ')';
3817 }
3818 S += " {\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003819
Steve Naroff54055232008-10-27 17:20:55 +00003820 // Create local declarations to avoid rewriting all closure decl ref exprs.
3821 // First, emit a declaration for all "by ref" decls.
Mike Stump1eb44332009-09-09 15:08:12 +00003822 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003823 E = BlockByRefDecls.end(); I != E; ++I) {
3824 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003825 std::string Name = (*I)->getNameAsString();
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00003826 std::string TypeString;
3827 RewriteByRefString(TypeString, Name, (*I));
3828 TypeString += " *";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00003829 Name = TypeString + Name;
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003830 S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003831 }
Steve Naroff54055232008-10-27 17:20:55 +00003832 // Next, emit a declaration for all "by copy" declarations.
Mike Stump1eb44332009-09-09 15:08:12 +00003833 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003834 E = BlockByCopyDecls.end(); I != E; ++I) {
3835 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003836 std::string Name = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00003837 // Handle nested closure invocation. For example:
3838 //
3839 // void (^myImportedClosure)(void);
3840 // myImportedClosure = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00003841 //
Steve Naroff54055232008-10-27 17:20:55 +00003842 // void (^anotherClosure)(void);
3843 // anotherClosure = ^(void) {
3844 // myImportedClosure(); // import and invoke the closure
3845 // };
3846 //
Steve Naroff01f2ffa2008-12-11 21:05:33 +00003847 if (isTopLevelBlockPointerType((*I)->getType()))
Steve Naroff54055232008-10-27 17:20:55 +00003848 S += "struct __block_impl *";
3849 else
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00003850 (*I)->getType().getAsStringInternal(Name, Context->PrintingPolicy);
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003851 S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
Steve Naroff54055232008-10-27 17:20:55 +00003852 }
3853 std::string RewrittenStr = RewrittenBlockExprs[CE];
3854 const char *cstr = RewrittenStr.c_str();
3855 while (*cstr++ != '{') ;
3856 S += cstr;
3857 S += "\n";
3858 return S;
3859}
Argyrios Kyrtzidis39ba4ae2008-06-09 23:19:58 +00003860
Steve Naroff54055232008-10-27 17:20:55 +00003861std::string RewriteObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
3862 const char *funcName,
3863 std::string Tag) {
3864 std::string StructRef = "struct " + Tag;
3865 std::string S = "static void __";
Mike Stump1eb44332009-09-09 15:08:12 +00003866
Steve Naroff54055232008-10-27 17:20:55 +00003867 S += funcName;
3868 S += "_block_copy_" + utostr(i);
3869 S += "(" + StructRef;
3870 S += "*dst, " + StructRef;
3871 S += "*src) {";
Mike Stump1eb44332009-09-09 15:08:12 +00003872 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003873 E = ImportedBlockDecls.end(); I != E; ++I) {
Steve Naroff5bc60d02008-12-16 15:50:30 +00003874 S += "_Block_object_assign((void*)&dst->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003875 S += (*I)->getNameAsString();
Steve Naroff47a24222008-12-11 20:51:38 +00003876 S += ", (void*)src->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003877 S += (*I)->getNameAsString();
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00003878 if (BlockByRefDecls.count((*I)))
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00003879 S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00003880 else
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00003881 S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
Steve Naroff54055232008-10-27 17:20:55 +00003882 }
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00003883 S += "}\n";
3884
Steve Naroff54055232008-10-27 17:20:55 +00003885 S += "\nstatic void __";
3886 S += funcName;
3887 S += "_block_dispose_" + utostr(i);
3888 S += "(" + StructRef;
3889 S += "*src) {";
Mike Stump1eb44332009-09-09 15:08:12 +00003890 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003891 E = ImportedBlockDecls.end(); I != E; ++I) {
Steve Naroff5bc60d02008-12-16 15:50:30 +00003892 S += "_Block_object_dispose((void*)src->";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003893 S += (*I)->getNameAsString();
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00003894 if (BlockByRefDecls.count((*I)))
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00003895 S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
Fariborz Jahaniand25d1b52009-12-23 20:32:38 +00003896 else
Fariborz Jahanian73e437b2009-12-23 21:18:41 +00003897 S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
Steve Naroff54055232008-10-27 17:20:55 +00003898 }
Mike Stump1eb44332009-09-09 15:08:12 +00003899 S += "}\n";
Steve Naroff54055232008-10-27 17:20:55 +00003900 return S;
3901}
3902
Steve Naroff01aec112009-12-06 21:14:13 +00003903std::string RewriteObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
3904 std::string Desc) {
Steve Naroffced80a82008-10-30 12:09:33 +00003905 std::string S = "\nstruct " + Tag;
Steve Naroff54055232008-10-27 17:20:55 +00003906 std::string Constructor = " " + Tag;
Mike Stump1eb44332009-09-09 15:08:12 +00003907
Steve Naroff54055232008-10-27 17:20:55 +00003908 S += " {\n struct __block_impl impl;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00003909 S += " struct " + Desc;
3910 S += "* Desc;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003911
Steve Naroff01aec112009-12-06 21:14:13 +00003912 Constructor += "(void *fp, "; // Invoke function pointer.
3913 Constructor += "struct " + Desc; // Descriptor pointer.
3914 Constructor += " *desc";
Mike Stump1eb44332009-09-09 15:08:12 +00003915
Steve Naroff54055232008-10-27 17:20:55 +00003916 if (BlockDeclRefs.size()) {
3917 // Output all "by copy" declarations.
Mike Stump1eb44332009-09-09 15:08:12 +00003918 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003919 E = BlockByCopyDecls.end(); I != E; ++I) {
3920 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003921 std::string FieldName = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00003922 std::string ArgName = "_" + FieldName;
3923 // Handle nested closure invocation. For example:
3924 //
3925 // void (^myImportedBlock)(void);
3926 // myImportedBlock = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00003927 //
Steve Naroff54055232008-10-27 17:20:55 +00003928 // void (^anotherBlock)(void);
3929 // anotherBlock = ^(void) {
3930 // myImportedBlock(); // import and invoke the closure
3931 // };
3932 //
Steve Naroff01f2ffa2008-12-11 21:05:33 +00003933 if (isTopLevelBlockPointerType((*I)->getType())) {
Steve Naroff54055232008-10-27 17:20:55 +00003934 S += "struct __block_impl *";
3935 Constructor += ", void *" + ArgName;
3936 } else {
Douglas Gregord249e1d1f2009-05-29 20:38:28 +00003937 (*I)->getType().getAsStringInternal(FieldName, Context->PrintingPolicy);
3938 (*I)->getType().getAsStringInternal(ArgName, Context->PrintingPolicy);
Steve Naroff54055232008-10-27 17:20:55 +00003939 Constructor += ", " + ArgName;
3940 }
3941 S += FieldName + ";\n";
3942 }
3943 // Output all "by ref" declarations.
Mike Stump1eb44332009-09-09 15:08:12 +00003944 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003945 E = BlockByRefDecls.end(); I != E; ++I) {
3946 S += " ";
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003947 std::string FieldName = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00003948 std::string ArgName = "_" + FieldName;
3949 // Handle nested closure invocation. For example:
3950 //
3951 // void (^myImportedBlock)(void);
3952 // myImportedBlock = ^(void) { setGlobalInt(x + y); };
Mike Stump1eb44332009-09-09 15:08:12 +00003953 //
Steve Naroff54055232008-10-27 17:20:55 +00003954 // void (^anotherBlock)(void);
3955 // anotherBlock = ^(void) {
3956 // myImportedBlock(); // import and invoke the closure
3957 // };
3958 //
Steve Naroff01f2ffa2008-12-11 21:05:33 +00003959 if (isTopLevelBlockPointerType((*I)->getType())) {
Steve Naroff54055232008-10-27 17:20:55 +00003960 S += "struct __block_impl *";
3961 Constructor += ", void *" + ArgName;
3962 } else {
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00003963 std::string TypeString;
3964 RewriteByRefString(TypeString, FieldName, (*I));
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00003965 TypeString += " *";
3966 FieldName = TypeString + FieldName;
3967 ArgName = TypeString + ArgName;
Steve Naroff54055232008-10-27 17:20:55 +00003968 Constructor += ", " + ArgName;
3969 }
3970 S += FieldName + "; // by ref\n";
3971 }
3972 // Finish writing the constructor.
Steve Naroff54055232008-10-27 17:20:55 +00003973 Constructor += ", int flags=0) {\n";
Steve Naroff621edce2009-04-29 16:37:50 +00003974 if (GlobalVarDecl)
3975 Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
3976 else
3977 Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00003978 Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003979
Steve Naroff01aec112009-12-06 21:14:13 +00003980 Constructor += " Desc = desc;\n";
Mike Stump1eb44332009-09-09 15:08:12 +00003981
Steve Naroff54055232008-10-27 17:20:55 +00003982 // Initialize all "by copy" arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00003983 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003984 E = BlockByCopyDecls.end(); I != E; ++I) {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003985 std::string Name = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00003986 Constructor += " ";
Steve Naroff01f2ffa2008-12-11 21:05:33 +00003987 if (isTopLevelBlockPointerType((*I)->getType()))
Steve Naroff54055232008-10-27 17:20:55 +00003988 Constructor += Name + " = (struct __block_impl *)_";
3989 else
3990 Constructor += Name + " = _";
3991 Constructor += Name + ";\n";
3992 }
3993 // Initialize all "by ref" arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00003994 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Naroff54055232008-10-27 17:20:55 +00003995 E = BlockByRefDecls.end(); I != E; ++I) {
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00003996 std::string Name = (*I)->getNameAsString();
Steve Naroff54055232008-10-27 17:20:55 +00003997 Constructor += " ";
Steve Naroff01f2ffa2008-12-11 21:05:33 +00003998 if (isTopLevelBlockPointerType((*I)->getType()))
Steve Naroff54055232008-10-27 17:20:55 +00003999 Constructor += Name + " = (struct __block_impl *)_";
4000 else
4001 Constructor += Name + " = _";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004002 Constructor += Name + "->__forwarding;\n";
Steve Naroff54055232008-10-27 17:20:55 +00004003 }
4004 } else {
4005 // Finish writing the constructor.
Steve Naroff54055232008-10-27 17:20:55 +00004006 Constructor += ", int flags=0) {\n";
Steve Naroff621edce2009-04-29 16:37:50 +00004007 if (GlobalVarDecl)
4008 Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
4009 else
4010 Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004011 Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
4012 Constructor += " Desc = desc;\n";
Steve Naroff54055232008-10-27 17:20:55 +00004013 }
4014 Constructor += " ";
4015 Constructor += "}\n";
4016 S += Constructor;
4017 S += "};\n";
4018 return S;
4019}
4020
Steve Naroff01aec112009-12-06 21:14:13 +00004021std::string RewriteObjC::SynthesizeBlockDescriptor(std::string DescTag,
4022 std::string ImplTag, int i,
4023 const char *FunName,
4024 unsigned hasCopy) {
4025 std::string S = "\nstatic struct " + DescTag;
4026
4027 S += " {\n unsigned long reserved;\n";
4028 S += " unsigned long Block_size;\n";
4029 if (hasCopy) {
Fariborz Jahanian4fcc4fd2009-12-21 23:31:42 +00004030 S += " void (*copy)(struct ";
4031 S += ImplTag; S += "*, struct ";
4032 S += ImplTag; S += "*);\n";
4033
4034 S += " void (*dispose)(struct ";
4035 S += ImplTag; S += "*);\n";
Steve Naroff01aec112009-12-06 21:14:13 +00004036 }
4037 S += "} ";
4038
4039 S += DescTag + "_DATA = { 0, sizeof(struct ";
4040 S += ImplTag + ")";
4041 if (hasCopy) {
4042 S += ", __" + std::string(FunName) + "_block_copy_" + utostr(i);
4043 S += ", __" + std::string(FunName) + "_block_dispose_" + utostr(i);
4044 }
4045 S += "};\n";
4046 return S;
4047}
4048
Steve Naroff54055232008-10-27 17:20:55 +00004049void RewriteObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004050 const char *FunName) {
4051 // Insert declaration for the function in which block literal is used.
Fariborz Jahanianbf070122010-01-15 18:14:52 +00004052 if (CurFunctionDeclToDeclareForBlock && !Blocks.empty())
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004053 RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
Steve Naroff54055232008-10-27 17:20:55 +00004054 // Insert closures that were part of the function.
4055 for (unsigned i = 0; i < Blocks.size(); i++) {
4056
4057 CollectBlockDeclRefInfo(Blocks[i]);
4058
Steve Naroff01aec112009-12-06 21:14:13 +00004059 std::string ImplTag = "__" + std::string(FunName) + "_block_impl_" + utostr(i);
4060 std::string DescTag = "__" + std::string(FunName) + "_block_desc_" + utostr(i);
Mike Stump1eb44332009-09-09 15:08:12 +00004061
Steve Naroff01aec112009-12-06 21:14:13 +00004062 std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);
Steve Naroff54055232008-10-27 17:20:55 +00004063
4064 InsertText(FunLocStart, CI.c_str(), CI.size());
4065
Steve Naroff01aec112009-12-06 21:14:13 +00004066 std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);
Mike Stump1eb44332009-09-09 15:08:12 +00004067
Steve Naroff54055232008-10-27 17:20:55 +00004068 InsertText(FunLocStart, CF.c_str(), CF.size());
4069
4070 if (ImportedBlockDecls.size()) {
Steve Naroff01aec112009-12-06 21:14:13 +00004071 std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
Steve Naroff54055232008-10-27 17:20:55 +00004072 InsertText(FunLocStart, HF.c_str(), HF.size());
4073 }
Steve Naroff01aec112009-12-06 21:14:13 +00004074 std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
4075 ImportedBlockDecls.size() > 0);
4076 InsertText(FunLocStart, BD.c_str(), BD.size());
Mike Stump1eb44332009-09-09 15:08:12 +00004077
Steve Naroff54055232008-10-27 17:20:55 +00004078 BlockDeclRefs.clear();
4079 BlockByRefDecls.clear();
4080 BlockByCopyDecls.clear();
4081 BlockCallExprs.clear();
4082 ImportedBlockDecls.clear();
4083 }
4084 Blocks.clear();
4085 RewrittenBlockExprs.clear();
4086}
4087
4088void RewriteObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
4089 SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
Chris Lattner8ec03f52008-11-24 03:54:41 +00004090 const char *FuncName = FD->getNameAsCString();
Mike Stump1eb44332009-09-09 15:08:12 +00004091
Steve Naroff54055232008-10-27 17:20:55 +00004092 SynthesizeBlockLiterals(FunLocStart, FuncName);
4093}
4094
4095void RewriteObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
Steve Naroffced80a82008-10-30 12:09:33 +00004096 //fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
4097 //SourceLocation FunLocStart = MD->getLocStart();
Fariborz Jahanian0e1c99a2010-01-29 01:55:49 +00004098 SourceLocation FunLocStart = MD->getLocStart();
Chris Lattner077bf5e2008-11-24 03:33:13 +00004099 std::string FuncName = MD->getSelector().getAsString();
Steve Naroff54055232008-10-27 17:20:55 +00004100 // Convert colons to underscores.
4101 std::string::size_type loc = 0;
4102 while ((loc = FuncName.find(":", loc)) != std::string::npos)
4103 FuncName.replace(loc, 1, "_");
Mike Stump1eb44332009-09-09 15:08:12 +00004104
Steve Naroff54055232008-10-27 17:20:55 +00004105 SynthesizeBlockLiterals(FunLocStart, FuncName.c_str());
4106}
4107
4108void RewriteObjC::GetBlockDeclRefExprs(Stmt *S) {
4109 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4110 CI != E; ++CI)
4111 if (*CI) {
4112 if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
4113 GetBlockDeclRefExprs(CBE->getBody());
4114 else
4115 GetBlockDeclRefExprs(*CI);
4116 }
4117 // Handle specific things.
4118 if (BlockDeclRefExpr *CDRE = dyn_cast<BlockDeclRefExpr>(S))
4119 // FIXME: Handle enums.
4120 if (!isa<FunctionDecl>(CDRE->getDecl()))
4121 BlockDeclRefs.push_back(CDRE);
4122 return;
4123}
4124
4125void RewriteObjC::GetBlockCallExprs(Stmt *S) {
4126 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4127 CI != E; ++CI)
4128 if (*CI) {
4129 if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
4130 GetBlockCallExprs(CBE->getBody());
4131 else
4132 GetBlockCallExprs(*CI);
4133 }
Mike Stump1eb44332009-09-09 15:08:12 +00004134
Steve Naroff54055232008-10-27 17:20:55 +00004135 if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
4136 if (CE->getCallee()->getType()->isBlockPointerType()) {
4137 BlockCallExprs[dyn_cast<BlockDeclRefExpr>(CE->getCallee())] = CE;
4138 }
4139 }
4140 return;
4141}
4142
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004143Stmt *RewriteObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
Steve Naroff54055232008-10-27 17:20:55 +00004144 // Navigate to relevant type information.
Steve Naroff54055232008-10-27 17:20:55 +00004145 const BlockPointerType *CPT = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00004146
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004147 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004148 CPT = DRE->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004149 } else if (const BlockDeclRefExpr *CDRE =
4150 dyn_cast<BlockDeclRefExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004151 CPT = CDRE->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004152 } else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004153 CPT = MExpr->getType()->getAs<BlockPointerType>();
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004154 }
4155 else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
4156 return SynthesizeBlockCall(Exp, PRE->getSubExpr());
4157 }
4158 else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
4159 CPT = IEXPR->getType()->getAs<BlockPointerType>();
4160 else if (const ConditionalOperator *CEXPR =
4161 dyn_cast<ConditionalOperator>(BlockExp)) {
4162 Expr *LHSExp = CEXPR->getLHS();
4163 Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
4164 Expr *RHSExp = CEXPR->getRHS();
4165 Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
4166 Expr *CONDExp = CEXPR->getCond();
4167 ConditionalOperator *CondExpr =
4168 new (Context) ConditionalOperator(CONDExp,
4169 SourceLocation(), cast<Expr>(LHSStmt),
4170 SourceLocation(), cast<Expr>(RHSStmt),
4171 Exp->getType());
4172 return CondExpr;
Fariborz Jahaniane24b22b2009-12-18 01:15:21 +00004173 } else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
4174 CPT = IRE->getType()->getAs<BlockPointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004175 } else {
4176 assert(1 && "RewriteBlockClass: Bad type");
4177 }
4178 assert(CPT && "RewriteBlockClass: Bad type");
John McCall183700f2009-09-21 23:43:11 +00004179 const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
Steve Naroff54055232008-10-27 17:20:55 +00004180 assert(FT && "RewriteBlockClass: Bad type");
Douglas Gregor72564e72009-02-26 23:50:07 +00004181 const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
Steve Naroff54055232008-10-27 17:20:55 +00004182 // FTP will be null for closures that don't take arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00004183
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004184 RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
4185 SourceLocation(),
4186 &Context->Idents.get("__block_impl"));
4187 QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
Steve Naroff54055232008-10-27 17:20:55 +00004188
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004189 // Generate a funky cast.
4190 llvm::SmallVector<QualType, 8> ArgTypes;
Mike Stump1eb44332009-09-09 15:08:12 +00004191
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004192 // Push the block argument type.
4193 ArgTypes.push_back(PtrBlock);
Steve Naroff54055232008-10-27 17:20:55 +00004194 if (FTP) {
Mike Stump1eb44332009-09-09 15:08:12 +00004195 for (FunctionProtoType::arg_type_iterator I = FTP->arg_type_begin(),
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004196 E = FTP->arg_type_end(); I && (I != E); ++I) {
4197 QualType t = *I;
4198 // Make sure we convert "t (^)(...)" to "t (*)(...)".
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004199 if (isTopLevelBlockPointerType(t)) {
Ted Kremenek6217b802009-07-29 21:53:49 +00004200 const BlockPointerType *BPT = t->getAs<BlockPointerType>();
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004201 t = Context->getPointerType(BPT->getPointeeType());
4202 }
4203 ArgTypes.push_back(t);
4204 }
Steve Naroff54055232008-10-27 17:20:55 +00004205 }
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004206 // Now do the pointer to function cast.
Mike Stump1eb44332009-09-09 15:08:12 +00004207 QualType PtrToFuncCastType = Context->getFunctionType(Exp->getType(),
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004208 &ArgTypes[0], ArgTypes.size(), false/*no variadic*/, 0);
Mike Stump1eb44332009-09-09 15:08:12 +00004209
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004210 PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
Mike Stump1eb44332009-09-09 15:08:12 +00004211
John McCall9d125032010-01-15 18:39:57 +00004212 CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
4213 CastExpr::CK_Unknown,
4214 const_cast<Expr*>(BlockExp));
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004215 // Don't forget the parens to enforce the proper binding.
Ted Kremenek8189cde2009-02-07 01:47:29 +00004216 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
4217 BlkCast);
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004218 //PE->dump();
Mike Stump1eb44332009-09-09 15:08:12 +00004219
Douglas Gregor44b43212008-12-11 16:49:14 +00004220 FieldDecl *FD = FieldDecl::Create(*Context, 0, SourceLocation(),
Mike Stump1eb44332009-09-09 15:08:12 +00004221 &Context->Idents.get("FuncPtr"), Context->VoidPtrTy, 0,
Douglas Gregor4afa39d2009-01-20 01:17:11 +00004222 /*BitWidth=*/0, /*Mutable=*/true);
Ted Kremenek8189cde2009-02-07 01:47:29 +00004223 MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
4224 FD->getType());
Mike Stump1eb44332009-09-09 15:08:12 +00004225
John McCall9d125032010-01-15 18:39:57 +00004226 CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
4227 CastExpr::CK_Unknown, ME);
Ted Kremenek8189cde2009-02-07 01:47:29 +00004228 PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
Mike Stump1eb44332009-09-09 15:08:12 +00004229
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004230 llvm::SmallVector<Expr*, 8> BlkExprs;
4231 // Add the implicit argument.
4232 BlkExprs.push_back(BlkCast);
4233 // Add the user arguments.
Mike Stump1eb44332009-09-09 15:08:12 +00004234 for (CallExpr::arg_iterator I = Exp->arg_begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004235 E = Exp->arg_end(); I != E; ++I) {
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004236 BlkExprs.push_back(*I);
Steve Naroff54055232008-10-27 17:20:55 +00004237 }
Ted Kremenek668bf912009-02-09 20:51:47 +00004238 CallExpr *CE = new (Context) CallExpr(*Context, PE, &BlkExprs[0],
4239 BlkExprs.size(),
Ted Kremenek8189cde2009-02-07 01:47:29 +00004240 Exp->getType(), SourceLocation());
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004241 return CE;
Steve Naroff54055232008-10-27 17:20:55 +00004242}
4243
4244void RewriteObjC::RewriteBlockCall(CallExpr *Exp) {
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00004245 Stmt *BlockCall = SynthesizeBlockCall(Exp, Exp->getCallee());
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00004246 ReplaceStmt(Exp, BlockCall);
Steve Naroff54055232008-10-27 17:20:55 +00004247}
4248
Steve Naroff621edce2009-04-29 16:37:50 +00004249// We need to return the rewritten expression to handle cases where the
4250// BlockDeclRefExpr is embedded in another expression being rewritten.
4251// For example:
4252//
4253// int main() {
4254// __block Foo *f;
4255// __block int i;
Mike Stump1eb44332009-09-09 15:08:12 +00004256//
Steve Naroff621edce2009-04-29 16:37:50 +00004257// void (^myblock)() = ^() {
4258// [f test]; // f is a BlockDeclRefExpr embedded in a message (which is being rewritten).
4259// i = 77;
4260// };
4261//}
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004262Stmt *RewriteObjC::RewriteBlockDeclRefExpr(Expr *DeclRefExp) {
Fariborz Jahanianbbf37e22009-12-23 19:26:34 +00004263 // Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004264 // for each DeclRefExp where BYREFVAR is name of the variable.
4265 ValueDecl *VD;
4266 bool isArrow = true;
4267 if (BlockDeclRefExpr *BDRE = dyn_cast<BlockDeclRefExpr>(DeclRefExp))
4268 VD = BDRE->getDecl();
4269 else {
4270 VD = cast<DeclRefExpr>(DeclRefExp)->getDecl();
4271 isArrow = false;
4272 }
4273
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004274 FieldDecl *FD = FieldDecl::Create(*Context, 0, SourceLocation(),
4275 &Context->Idents.get("__forwarding"),
4276 Context->VoidPtrTy, 0,
4277 /*BitWidth=*/0, /*Mutable=*/true);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004278 MemberExpr *ME = new (Context) MemberExpr(DeclRefExp, isArrow,
4279 FD, SourceLocation(),
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004280 FD->getType());
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004281
4282 const char *Name = VD->getNameAsCString();
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004283 FD = FieldDecl::Create(*Context, 0, SourceLocation(),
4284 &Context->Idents.get(Name),
4285 Context->VoidPtrTy, 0,
4286 /*BitWidth=*/0, /*Mutable=*/true);
4287 ME = new (Context) MemberExpr(ME, true, FD, SourceLocation(),
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004288 DeclRefExp->getType());
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004289
4290
4291
Steve Naroffdf8570d2009-02-02 17:19:26 +00004292 // Need parens to enforce precedence.
Fariborz Jahanianec878f22009-12-23 19:22:33 +00004293 ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
4294 ME);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004295 ReplaceStmt(DeclRefExp, PE);
Steve Naroff621edce2009-04-29 16:37:50 +00004296 return PE;
Steve Naroff54055232008-10-27 17:20:55 +00004297}
4298
Steve Naroffb2f9e512008-11-03 23:29:32 +00004299void RewriteObjC::RewriteCastExpr(CStyleCastExpr *CE) {
4300 SourceLocation LocStart = CE->getLParenLoc();
4301 SourceLocation LocEnd = CE->getRParenLoc();
Steve Narofffa15fd92008-10-28 20:29:00 +00004302
4303 // Need to avoid trying to rewrite synthesized casts.
4304 if (LocStart.isInvalid())
4305 return;
Steve Naroff8f6ce572008-11-03 11:20:24 +00004306 // Need to avoid trying to rewrite casts contained in macros.
4307 if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
4308 return;
Mike Stump1eb44332009-09-09 15:08:12 +00004309
Steve Naroff54055232008-10-27 17:20:55 +00004310 const char *startBuf = SM->getCharacterData(LocStart);
4311 const char *endBuf = SM->getCharacterData(LocEnd);
Fariborz Jahanian1d4fca22010-01-19 21:48:35 +00004312 QualType QT = CE->getType();
4313 const Type* TypePtr = QT->getAs<Type>();
4314 if (isa<TypeOfExprType>(TypePtr)) {
4315 const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
4316 QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
4317 std::string TypeAsString = "(";
4318 TypeAsString += QT.getAsString();
4319 TypeAsString += ")";
4320 ReplaceText(LocStart, endBuf-startBuf+1,
4321 TypeAsString.c_str(), TypeAsString.size());
4322 return;
4323 }
Steve Naroff54055232008-10-27 17:20:55 +00004324 // advance the location to startArgList.
4325 const char *argPtr = startBuf;
Mike Stump1eb44332009-09-09 15:08:12 +00004326
Steve Naroff54055232008-10-27 17:20:55 +00004327 while (*argPtr++ && (argPtr < endBuf)) {
4328 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004329 case '^':
4330 // Replace the '^' with '*'.
4331 LocStart = LocStart.getFileLocWithOffset(argPtr-startBuf);
4332 ReplaceText(LocStart, 1, "*", 1);
4333 break;
Steve Naroff54055232008-10-27 17:20:55 +00004334 }
4335 }
4336 return;
4337}
4338
4339void RewriteObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
4340 SourceLocation DeclLoc = FD->getLocation();
4341 unsigned parenCount = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00004342
Steve Naroff54055232008-10-27 17:20:55 +00004343 // We have 1 or more arguments that have closure pointers.
4344 const char *startBuf = SM->getCharacterData(DeclLoc);
4345 const char *startArgList = strchr(startBuf, '(');
Mike Stump1eb44332009-09-09 15:08:12 +00004346
Steve Naroff54055232008-10-27 17:20:55 +00004347 assert((*startArgList == '(') && "Rewriter fuzzy parser confused");
Mike Stump1eb44332009-09-09 15:08:12 +00004348
Steve Naroff54055232008-10-27 17:20:55 +00004349 parenCount++;
4350 // advance the location to startArgList.
4351 DeclLoc = DeclLoc.getFileLocWithOffset(startArgList-startBuf);
4352 assert((DeclLoc.isValid()) && "Invalid DeclLoc");
Mike Stump1eb44332009-09-09 15:08:12 +00004353
Steve Naroff54055232008-10-27 17:20:55 +00004354 const char *argPtr = startArgList;
Mike Stump1eb44332009-09-09 15:08:12 +00004355
Steve Naroff54055232008-10-27 17:20:55 +00004356 while (*argPtr++ && parenCount) {
4357 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004358 case '^':
4359 // Replace the '^' with '*'.
4360 DeclLoc = DeclLoc.getFileLocWithOffset(argPtr-startArgList);
4361 ReplaceText(DeclLoc, 1, "*", 1);
4362 break;
4363 case '(':
4364 parenCount++;
4365 break;
4366 case ')':
4367 parenCount--;
4368 break;
Steve Naroff54055232008-10-27 17:20:55 +00004369 }
4370 }
4371 return;
4372}
4373
4374bool RewriteObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
Douglas Gregor72564e72009-02-26 23:50:07 +00004375 const FunctionProtoType *FTP;
Ted Kremenek6217b802009-07-29 21:53:49 +00004376 const PointerType *PT = QT->getAs<PointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004377 if (PT) {
John McCall183700f2009-09-21 23:43:11 +00004378 FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
Steve Naroff54055232008-10-27 17:20:55 +00004379 } else {
Ted Kremenek6217b802009-07-29 21:53:49 +00004380 const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
Steve Naroff54055232008-10-27 17:20:55 +00004381 assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
John McCall183700f2009-09-21 23:43:11 +00004382 FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
Steve Naroff54055232008-10-27 17:20:55 +00004383 }
4384 if (FTP) {
Mike Stump1eb44332009-09-09 15:08:12 +00004385 for (FunctionProtoType::arg_type_iterator I = FTP->arg_type_begin(),
Steve Naroff54055232008-10-27 17:20:55 +00004386 E = FTP->arg_type_end(); I != E; ++I)
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004387 if (isTopLevelBlockPointerType(*I))
Steve Naroff54055232008-10-27 17:20:55 +00004388 return true;
4389 }
4390 return false;
4391}
4392
Ted Kremenek8189cde2009-02-07 01:47:29 +00004393void RewriteObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
4394 const char *&RParen) {
Steve Naroff54055232008-10-27 17:20:55 +00004395 const char *argPtr = strchr(Name, '(');
4396 assert((*argPtr == '(') && "Rewriter fuzzy parser confused");
Mike Stump1eb44332009-09-09 15:08:12 +00004397
Steve Naroff54055232008-10-27 17:20:55 +00004398 LParen = argPtr; // output the start.
4399 argPtr++; // skip past the left paren.
4400 unsigned parenCount = 1;
Mike Stump1eb44332009-09-09 15:08:12 +00004401
Steve Naroff54055232008-10-27 17:20:55 +00004402 while (*argPtr && parenCount) {
4403 switch (*argPtr) {
Mike Stumpb7166332010-01-20 02:03:14 +00004404 case '(': parenCount++; break;
4405 case ')': parenCount--; break;
4406 default: break;
Steve Naroff54055232008-10-27 17:20:55 +00004407 }
4408 if (parenCount) argPtr++;
4409 }
4410 assert((*argPtr == ')') && "Rewriter fuzzy parser confused");
4411 RParen = argPtr; // output the end
4412}
4413
4414void RewriteObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
4415 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
4416 RewriteBlockPointerFunctionArgs(FD);
4417 return;
Mike Stump1eb44332009-09-09 15:08:12 +00004418 }
Steve Naroff54055232008-10-27 17:20:55 +00004419 // Handle Variables and Typedefs.
4420 SourceLocation DeclLoc = ND->getLocation();
4421 QualType DeclT;
4422 if (VarDecl *VD = dyn_cast<VarDecl>(ND))
4423 DeclT = VD->getType();
4424 else if (TypedefDecl *TDD = dyn_cast<TypedefDecl>(ND))
4425 DeclT = TDD->getUnderlyingType();
4426 else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
4427 DeclT = FD->getType();
Mike Stump1eb44332009-09-09 15:08:12 +00004428 else
Steve Naroff54055232008-10-27 17:20:55 +00004429 assert(0 && "RewriteBlockPointerDecl(): Decl type not yet handled");
Mike Stump1eb44332009-09-09 15:08:12 +00004430
Steve Naroff54055232008-10-27 17:20:55 +00004431 const char *startBuf = SM->getCharacterData(DeclLoc);
4432 const char *endBuf = startBuf;
4433 // scan backward (from the decl location) for the end of the previous decl.
4434 while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
4435 startBuf--;
Mike Stump1eb44332009-09-09 15:08:12 +00004436
Steve Naroff54055232008-10-27 17:20:55 +00004437 // *startBuf != '^' if we are dealing with a pointer to function that
4438 // may take block argument types (which will be handled below).
4439 if (*startBuf == '^') {
4440 // Replace the '^' with '*', computing a negative offset.
4441 DeclLoc = DeclLoc.getFileLocWithOffset(startBuf-endBuf);
4442 ReplaceText(DeclLoc, 1, "*", 1);
4443 }
4444 if (PointerTypeTakesAnyBlockArguments(DeclT)) {
4445 // Replace the '^' with '*' for arguments.
4446 DeclLoc = ND->getLocation();
4447 startBuf = SM->getCharacterData(DeclLoc);
4448 const char *argListBegin, *argListEnd;
4449 GetExtentOfArgList(startBuf, argListBegin, argListEnd);
4450 while (argListBegin < argListEnd) {
4451 if (*argListBegin == '^') {
4452 SourceLocation CaretLoc = DeclLoc.getFileLocWithOffset(argListBegin-startBuf);
4453 ReplaceText(CaretLoc, 1, "*", 1);
4454 }
4455 argListBegin++;
4456 }
4457 }
4458 return;
4459}
4460
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004461
4462/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
4463/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
4464/// struct Block_byref_id_object *src) {
4465/// _Block_object_assign (&_dest->object, _src->object,
4466/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4467/// [|BLOCK_FIELD_IS_WEAK]) // object
4468/// _Block_object_assign(&_dest->object, _src->object,
4469/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4470/// [|BLOCK_FIELD_IS_WEAK]) // block
4471/// }
4472/// And:
4473/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
4474/// _Block_object_dispose(_src->object,
4475/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4476/// [|BLOCK_FIELD_IS_WEAK]) // object
4477/// _Block_object_dispose(_src->object,
4478/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4479/// [|BLOCK_FIELD_IS_WEAK]) // block
4480/// }
4481
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004482std::string RewriteObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
4483 int flag) {
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004484 std::string S;
Benjamin Kramer1211a712010-01-10 19:57:50 +00004485 if (CopyDestroyCache.count(flag))
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004486 return S;
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004487 CopyDestroyCache.insert(flag);
4488 S = "static void __Block_byref_id_object_copy_";
4489 S += utostr(flag);
4490 S += "(void *dst, void *src) {\n";
4491
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004492 // offset into the object pointer is computed as:
4493 // void * + void* + int + int + void* + void *
4494 unsigned IntSize =
4495 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
4496 unsigned VoidPtrSize =
4497 static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));
4498
4499 unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/8;
4500 S += " _Block_object_assign((char*)dst + ";
4501 S += utostr(offset);
4502 S += ", *(void * *) ((char*)src + ";
4503 S += utostr(offset);
4504 S += "), ";
4505 S += utostr(flag);
4506 S += ");\n}\n";
4507
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004508 S += "static void __Block_byref_id_object_dispose_";
4509 S += utostr(flag);
4510 S += "(void *src) {\n";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004511 S += " _Block_object_dispose(*(void * *) ((char*)src + ";
4512 S += utostr(offset);
4513 S += "), ";
4514 S += utostr(flag);
4515 S += ");\n}\n";
4516 return S;
4517}
4518
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004519/// RewriteByRefVar - For each __block typex ND variable this routine transforms
4520/// the declaration into:
4521/// struct __Block_byref_ND {
4522/// void *__isa; // NULL for everything except __weak pointers
4523/// struct __Block_byref_ND *__forwarding;
4524/// int32_t __flags;
4525/// int32_t __size;
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004526/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
4527/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004528/// typex ND;
4529/// };
4530///
4531/// It then replaces declaration of ND variable with:
4532/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
4533/// __size=sizeof(struct __Block_byref_ND),
4534/// ND=initializer-if-any};
4535///
4536///
4537void RewriteObjC::RewriteByRefVar(VarDecl *ND) {
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00004538 // Insert declaration for the function in which block literal is
4539 // used.
4540 if (CurFunctionDeclToDeclareForBlock)
4541 RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004542 int flag = 0;
4543 int isa = 0;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004544 SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
4545 const char *startBuf = SM->getCharacterData(DeclLoc);
Fariborz Jahanian6f0a0a92009-12-30 20:38:08 +00004546 SourceLocation X = ND->getLocEnd();
4547 X = SM->getInstantiationLoc(X);
4548 const char *endBuf = SM->getCharacterData(X);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004549 std::string Name(ND->getNameAsString());
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004550 std::string ByrefType;
4551 RewriteByRefString(ByrefType, Name, ND);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004552 ByrefType += " {\n";
4553 ByrefType += " void *__isa;\n";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004554 RewriteByRefString(ByrefType, Name, ND);
4555 ByrefType += " *__forwarding;\n";
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004556 ByrefType += " int __flags;\n";
4557 ByrefType += " int __size;\n";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004558 // Add void *__Block_byref_id_object_copy;
4559 // void *__Block_byref_id_object_dispose; if needed.
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004560 QualType Ty = ND->getType();
4561 bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty);
4562 if (HasCopyAndDispose) {
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004563 ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
4564 ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004565 }
4566
4567 Ty.getAsStringInternal(Name, Context->PrintingPolicy);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004568 ByrefType += " " + Name + ";\n";
4569 ByrefType += "};\n";
4570 // Insert this type in global scope. It is needed by helper function.
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004571 SourceLocation FunLocStart;
4572 if (CurFunctionDef)
4573 FunLocStart = CurFunctionDef->getTypeSpecStartLoc();
4574 else {
4575 assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null");
4576 FunLocStart = CurMethodDef->getLocStart();
4577 }
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004578 InsertText(FunLocStart, ByrefType.c_str(), ByrefType.size());
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004579 if (Ty.isObjCGCWeak()) {
4580 flag |= BLOCK_FIELD_IS_WEAK;
4581 isa = 1;
4582 }
4583
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004584 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004585 flag = BLOCK_BYREF_CALLER;
4586 QualType Ty = ND->getType();
4587 // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
4588 if (Ty->isBlockPointerType())
4589 flag |= BLOCK_FIELD_IS_BLOCK;
4590 else
4591 flag |= BLOCK_FIELD_IS_OBJECT;
4592 std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004593 if (!HF.empty())
4594 InsertText(FunLocStart, HF.c_str(), HF.size());
4595 }
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004596
4597 // struct __Block_byref_ND ND =
4598 // {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
4599 // initializer-if-any};
4600 bool hasInit = (ND->getInit() != 0);
Fariborz Jahaniane1f84f82010-01-05 18:15:57 +00004601 unsigned flags = 0;
4602 if (HasCopyAndDispose)
4603 flags |= BLOCK_HAS_COPY_DISPOSE;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004604 Name = ND->getNameAsString();
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004605 ByrefType.clear();
4606 RewriteByRefString(ByrefType, Name, ND);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004607 if (!hasInit) {
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004608 ByrefType += " " + Name + " = {(void*)";
4609 ByrefType += utostr(isa);
4610 ByrefType += ", &" + Name + ", ";
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004611 ByrefType += utostr(flags);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004612 ByrefType += ", ";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004613 ByrefType += "sizeof(";
4614 RewriteByRefString(ByrefType, Name, ND);
4615 ByrefType += ")";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004616 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004617 ByrefType += ", __Block_byref_id_object_copy_";
4618 ByrefType += utostr(flag);
4619 ByrefType += ", __Block_byref_id_object_dispose_";
4620 ByrefType += utostr(flag);
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004621 }
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004622 ByrefType += "};\n";
4623 ReplaceText(DeclLoc, endBuf-startBuf+Name.size(),
4624 ByrefType.c_str(), ByrefType.size());
4625 }
4626 else {
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004627 SourceLocation startLoc;
4628 Expr *E = ND->getInit();
4629 if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
4630 startLoc = ECE->getLParenLoc();
4631 else
4632 startLoc = E->getLocStart();
Fariborz Jahanian791b10d2010-01-05 23:06:29 +00004633 startLoc = SM->getInstantiationLoc(startLoc);
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004634 endBuf = SM->getCharacterData(startLoc);
4635
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004636 ByrefType += " " + Name;
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004637 ByrefType += " = {(void*)";
Fariborz Jahanian2086d542010-01-05 19:21:35 +00004638 ByrefType += utostr(isa);
4639 ByrefType += ", &" + Name + ", ";
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004640 ByrefType += utostr(flags);
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00004641 ByrefType += ", ";
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00004642 ByrefType += "sizeof(";
4643 RewriteByRefString(ByrefType, Name, ND);
4644 ByrefType += "), ";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004645 if (HasCopyAndDispose) {
Fariborz Jahanianab10b2e2010-01-05 18:04:40 +00004646 ByrefType += "__Block_byref_id_object_copy_";
4647 ByrefType += utostr(flag);
4648 ByrefType += ", __Block_byref_id_object_dispose_";
4649 ByrefType += utostr(flag);
4650 ByrefType += ", ";
Fariborz Jahaniand2eb1fd2010-01-05 01:16:51 +00004651 }
Fariborz Jahaniandfa4fa02010-01-16 19:36:43 +00004652 ReplaceText(DeclLoc, endBuf-startBuf,
4653 ByrefType.c_str(), ByrefType.size());
Steve Naroffc5143c52009-12-23 17:24:33 +00004654
4655 // Complete the newly synthesized compound expression by inserting a right
4656 // curly brace before the end of the declaration.
4657 // FIXME: This approach avoids rewriting the initializer expression. It
4658 // also assumes there is only one declarator. For example, the following
4659 // isn't currently supported by this routine (in general):
4660 //
4661 // double __block BYREFVAR = 1.34, BYREFVAR2 = 1.37;
4662 //
4663 const char *startBuf = SM->getCharacterData(startLoc);
4664 const char *semiBuf = strchr(startBuf, ';');
4665 assert((*semiBuf == ';') && "RewriteByRefVar: can't find ';'");
4666 SourceLocation semiLoc =
4667 startLoc.getFileLocWithOffset(semiBuf-startBuf);
4668
4669 InsertText(semiLoc, "}", 1);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00004670 }
Fariborz Jahanian1be6b462009-12-22 00:48:54 +00004671 return;
4672}
4673
Mike Stump1eb44332009-09-09 15:08:12 +00004674void RewriteObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
Steve Naroff54055232008-10-27 17:20:55 +00004675 // Add initializers for any closure decl refs.
4676 GetBlockDeclRefExprs(Exp->getBody());
4677 if (BlockDeclRefs.size()) {
4678 // Unique all "by copy" declarations.
4679 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
4680 if (!BlockDeclRefs[i]->isByRef())
4681 BlockByCopyDecls.insert(BlockDeclRefs[i]->getDecl());
4682 // Unique all "by ref" declarations.
4683 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
4684 if (BlockDeclRefs[i]->isByRef()) {
4685 BlockByRefDecls.insert(BlockDeclRefs[i]->getDecl());
4686 }
4687 // Find any imported blocks...they will need special attention.
4688 for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
Fariborz Jahanian4fcc4fd2009-12-21 23:31:42 +00004689 if (BlockDeclRefs[i]->isByRef() ||
4690 BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
4691 BlockDeclRefs[i]->getType()->isBlockPointerType()) {
Steve Naroff00072682008-11-13 17:40:07 +00004692 GetBlockCallExprs(BlockDeclRefs[i]);
Steve Naroff54055232008-10-27 17:20:55 +00004693 ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
4694 }
4695 }
4696}
4697
Steve Narofffa15fd92008-10-28 20:29:00 +00004698FunctionDecl *RewriteObjC::SynthBlockInitFunctionDecl(const char *name) {
4699 IdentifierInfo *ID = &Context->Idents.get(name);
Douglas Gregor72564e72009-02-26 23:50:07 +00004700 QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
Mike Stump1eb44332009-09-09 15:08:12 +00004701 return FunctionDecl::Create(*Context, TUDecl,SourceLocation(),
Argyrios Kyrtzidisa1d56622009-08-19 01:27:57 +00004702 ID, FType, 0, FunctionDecl::Extern, false,
Douglas Gregor2224f842009-02-25 16:33:18 +00004703 false);
Steve Narofffa15fd92008-10-28 20:29:00 +00004704}
4705
Steve Naroff8e2f57a2008-10-29 18:15:37 +00004706Stmt *RewriteObjC::SynthBlockInitExpr(BlockExpr *Exp) {
Steve Narofffa15fd92008-10-28 20:29:00 +00004707 Blocks.push_back(Exp);
4708
4709 CollectBlockDeclRefInfo(Exp);
4710 std::string FuncName;
Mike Stump1eb44332009-09-09 15:08:12 +00004711
Steve Narofffa15fd92008-10-28 20:29:00 +00004712 if (CurFunctionDef)
Chris Lattner077bf5e2008-11-24 03:33:13 +00004713 FuncName = CurFunctionDef->getNameAsString();
Steve Narofffa15fd92008-10-28 20:29:00 +00004714 else if (CurMethodDef) {
Chris Lattner077bf5e2008-11-24 03:33:13 +00004715 FuncName = CurMethodDef->getSelector().getAsString();
Steve Narofffa15fd92008-10-28 20:29:00 +00004716 // Convert colons to underscores.
4717 std::string::size_type loc = 0;
4718 while ((loc = FuncName.find(":", loc)) != std::string::npos)
4719 FuncName.replace(loc, 1, "_");
Steve Naroff8e2f57a2008-10-29 18:15:37 +00004720 } else if (GlobalVarDecl)
Chris Lattnerd9d22dd2008-11-24 05:29:24 +00004721 FuncName = std::string(GlobalVarDecl->getNameAsString());
Mike Stump1eb44332009-09-09 15:08:12 +00004722
Steve Narofffa15fd92008-10-28 20:29:00 +00004723 std::string BlockNumber = utostr(Blocks.size()-1);
Mike Stump1eb44332009-09-09 15:08:12 +00004724
Steve Narofffa15fd92008-10-28 20:29:00 +00004725 std::string Tag = "__" + FuncName + "_block_impl_" + BlockNumber;
4726 std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
Mike Stump1eb44332009-09-09 15:08:12 +00004727
Steve Narofffa15fd92008-10-28 20:29:00 +00004728 // Get a pointer to the function type so we can cast appropriately.
4729 QualType FType = Context->getPointerType(QualType(Exp->getFunctionType(),0));
4730
4731 FunctionDecl *FD;
4732 Expr *NewRep;
Mike Stump1eb44332009-09-09 15:08:12 +00004733
Steve Narofffa15fd92008-10-28 20:29:00 +00004734 // Simulate a contructor call...
4735 FD = SynthBlockInitFunctionDecl(Tag.c_str());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004736 DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, FType, SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00004737
Steve Narofffa15fd92008-10-28 20:29:00 +00004738 llvm::SmallVector<Expr*, 4> InitExprs;
Mike Stump1eb44332009-09-09 15:08:12 +00004739
Steve Narofffdc03722008-10-29 21:23:59 +00004740 // Initialize the block function.
Steve Narofffa15fd92008-10-28 20:29:00 +00004741 FD = SynthBlockInitFunctionDecl(Func.c_str());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004742 DeclRefExpr *Arg = new (Context) DeclRefExpr(FD, FD->getType(),
4743 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00004744 CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
4745 CastExpr::CK_Unknown, Arg);
Mike Stump1eb44332009-09-09 15:08:12 +00004746 InitExprs.push_back(castExpr);
4747
Steve Naroff01aec112009-12-06 21:14:13 +00004748 // Initialize the block descriptor.
4749 std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";
Mike Stump1eb44332009-09-09 15:08:12 +00004750
Steve Naroff01aec112009-12-06 21:14:13 +00004751 VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
4752 &Context->Idents.get(DescData.c_str()),
4753 Context->VoidPtrTy, 0,
4754 VarDecl::Static);
4755 UnaryOperator *DescRefExpr = new (Context) UnaryOperator(
4756 new (Context) DeclRefExpr(NewVD,
4757 Context->VoidPtrTy, SourceLocation()),
4758 UnaryOperator::AddrOf,
4759 Context->getPointerType(Context->VoidPtrTy),
4760 SourceLocation());
4761 InitExprs.push_back(DescRefExpr);
4762
Steve Narofffa15fd92008-10-28 20:29:00 +00004763 // Add initializers for any closure decl refs.
4764 if (BlockDeclRefs.size()) {
Steve Narofffdc03722008-10-29 21:23:59 +00004765 Expr *Exp;
Steve Narofffa15fd92008-10-28 20:29:00 +00004766 // Output all "by copy" declarations.
Mike Stump1eb44332009-09-09 15:08:12 +00004767 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
Steve Narofffa15fd92008-10-28 20:29:00 +00004768 E = BlockByCopyDecls.end(); I != E; ++I) {
Steve Narofffa15fd92008-10-28 20:29:00 +00004769 if (isObjCType((*I)->getType())) {
Steve Narofffdc03722008-10-29 21:23:59 +00004770 // FIXME: Conform to ABI ([[obj retain] autorelease]).
Chris Lattner8ec03f52008-11-24 03:54:41 +00004771 FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004772 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
Steve Naroff01f2ffa2008-12-11 21:05:33 +00004773 } else if (isTopLevelBlockPointerType((*I)->getType())) {
Chris Lattner8ec03f52008-11-24 03:54:41 +00004774 FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004775 Arg = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00004776 Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
4777 CastExpr::CK_Unknown, Arg);
Steve Narofffa15fd92008-10-28 20:29:00 +00004778 } else {
Chris Lattner8ec03f52008-11-24 03:54:41 +00004779 FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004780 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
Steve Narofffa15fd92008-10-28 20:29:00 +00004781 }
Mike Stump1eb44332009-09-09 15:08:12 +00004782 InitExprs.push_back(Exp);
Steve Narofffa15fd92008-10-28 20:29:00 +00004783 }
4784 // Output all "by ref" declarations.
Mike Stump1eb44332009-09-09 15:08:12 +00004785 for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
Steve Narofffa15fd92008-10-28 20:29:00 +00004786 E = BlockByRefDecls.end(); I != E; ++I) {
Chris Lattner8ec03f52008-11-24 03:54:41 +00004787 FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004788 Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
4789 Exp = new (Context) UnaryOperator(Exp, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00004790 Context->getPointerType(Exp->getType()),
Steve Narofffdc03722008-10-29 21:23:59 +00004791 SourceLocation());
Mike Stump1eb44332009-09-09 15:08:12 +00004792 InitExprs.push_back(Exp);
Steve Narofffa15fd92008-10-28 20:29:00 +00004793 }
4794 }
Fariborz Jahanianff127882009-12-23 21:52:32 +00004795 if (ImportedBlockDecls.size()) {
4796 // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
4797 int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
Steve Naroff01aec112009-12-06 21:14:13 +00004798 unsigned IntSize =
4799 static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
Fariborz Jahanianff127882009-12-23 21:52:32 +00004800 Expr *FlagExp = new (Context) IntegerLiteral(llvm::APInt(IntSize, flag),
4801 Context->IntTy, SourceLocation());
4802 InitExprs.push_back(FlagExp);
Steve Naroff01aec112009-12-06 21:14:13 +00004803 }
Ted Kremenek668bf912009-02-09 20:51:47 +00004804 NewRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0], InitExprs.size(),
4805 FType, SourceLocation());
Ted Kremenek8189cde2009-02-07 01:47:29 +00004806 NewRep = new (Context) UnaryOperator(NewRep, UnaryOperator::AddrOf,
Mike Stump1eb44332009-09-09 15:08:12 +00004807 Context->getPointerType(NewRep->getType()),
Steve Narofffa15fd92008-10-28 20:29:00 +00004808 SourceLocation());
John McCall9d125032010-01-15 18:39:57 +00004809 NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CastExpr::CK_Unknown,
4810 NewRep);
Steve Narofffa15fd92008-10-28 20:29:00 +00004811 BlockDeclRefs.clear();
4812 BlockByRefDecls.clear();
4813 BlockByCopyDecls.clear();
4814 ImportedBlockDecls.clear();
4815 return NewRep;
4816}
4817
4818//===----------------------------------------------------------------------===//
4819// Function Body / Expression rewriting
4820//===----------------------------------------------------------------------===//
4821
Steve Naroffc77a6362008-12-04 16:24:46 +00004822// This is run as a first "pass" prior to RewriteFunctionBodyOrGlobalInitializer().
4823// The allows the main rewrite loop to associate all ObjCPropertyRefExprs with
4824// their respective BinaryOperator. Without this knowledge, we'd need to rewrite
4825// the ObjCPropertyRefExpr twice (once as a getter, and later as a setter).
4826// Since the rewriter isn't capable of rewriting rewritten code, it's important
4827// we get this right.
4828void RewriteObjC::CollectPropertySetters(Stmt *S) {
4829 // Perform a bottom up traversal of all children.
4830 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4831 CI != E; ++CI)
4832 if (*CI)
4833 CollectPropertySetters(*CI);
4834
4835 if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(S)) {
4836 if (BinOp->isAssignmentOp()) {
4837 if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS()))
4838 PropSetters[PRE] = BinOp;
4839 }
4840 }
4841}
4842
Steve Narofffa15fd92008-10-28 20:29:00 +00004843Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
Mike Stump1eb44332009-09-09 15:08:12 +00004844 if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
Steve Narofffa15fd92008-10-28 20:29:00 +00004845 isa<DoStmt>(S) || isa<ForStmt>(S))
4846 Stmts.push_back(S);
4847 else if (isa<ObjCForCollectionStmt>(S)) {
4848 Stmts.push_back(S);
Chris Lattner4824fcd2010-01-09 21:45:57 +00004849 ObjCBcLabelNo.push_back(++BcLabelCount);
Steve Narofffa15fd92008-10-28 20:29:00 +00004850 }
Mike Stump1eb44332009-09-09 15:08:12 +00004851
Steve Narofffa15fd92008-10-28 20:29:00 +00004852 SourceRange OrigStmtRange = S->getSourceRange();
Mike Stump1eb44332009-09-09 15:08:12 +00004853
Steve Narofffa15fd92008-10-28 20:29:00 +00004854 // Perform a bottom up rewrite of all children.
4855 for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
4856 CI != E; ++CI)
4857 if (*CI) {
4858 Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(*CI);
Mike Stump1eb44332009-09-09 15:08:12 +00004859 if (newStmt)
Steve Narofffa15fd92008-10-28 20:29:00 +00004860 *CI = newStmt;
4861 }
Mike Stump1eb44332009-09-09 15:08:12 +00004862
Steve Narofffa15fd92008-10-28 20:29:00 +00004863 if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
4864 // Rewrite the block body in place.
4865 RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
Mike Stump1eb44332009-09-09 15:08:12 +00004866
Steve Narofffa15fd92008-10-28 20:29:00 +00004867 // Now we snarf the rewritten text and stash it away for later use.
Ted Kremenek6a12a142010-01-07 18:00:35 +00004868 std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
Steve Naroff8e2f57a2008-10-29 18:15:37 +00004869 RewrittenBlockExprs[BE] = Str;
Mike Stump1eb44332009-09-09 15:08:12 +00004870
Steve Narofffa15fd92008-10-28 20:29:00 +00004871 Stmt *blockTranscribed = SynthBlockInitExpr(BE);
4872 //blockTranscribed->dump();
Steve Naroff8e2f57a2008-10-29 18:15:37 +00004873 ReplaceStmt(S, blockTranscribed);
Steve Narofffa15fd92008-10-28 20:29:00 +00004874 return blockTranscribed;
4875 }
4876 // Handle specific things.
4877 if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
4878 return RewriteAtEncode(AtEncode);
Mike Stump1eb44332009-09-09 15:08:12 +00004879
Steve Narofffa15fd92008-10-28 20:29:00 +00004880 if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S))
4881 return RewriteObjCIvarRefExpr(IvarRefExpr, OrigStmtRange.getBegin());
4882
Steve Naroffc77a6362008-12-04 16:24:46 +00004883 if (ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(S)) {
4884 BinaryOperator *BinOp = PropSetters[PropRefExpr];
4885 if (BinOp) {
4886 // Because the rewriter doesn't allow us to rewrite rewritten code,
4887 // we need to rewrite the right hand side prior to rewriting the setter.
Steve Naroffb619d952008-12-09 12:56:34 +00004888 DisableReplaceStmt = true;
4889 // Save the source range. Even if we disable the replacement, the
4890 // rewritten node will have been inserted into the tree. If the synthesized
4891 // node is at the 'end', the rewriter will fail. Consider this:
Mike Stump1eb44332009-09-09 15:08:12 +00004892 // self.errorHandler = handler ? handler :
Steve Naroffb619d952008-12-09 12:56:34 +00004893 // ^(NSURL *errorURL, NSError *error) { return (BOOL)1; };
4894 SourceRange SrcRange = BinOp->getSourceRange();
Steve Naroffc77a6362008-12-04 16:24:46 +00004895 Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(BinOp->getRHS());
Steve Naroffb619d952008-12-09 12:56:34 +00004896 DisableReplaceStmt = false;
Steve Naroff4c3580e2008-12-04 23:50:32 +00004897 //
4898 // Unlike the main iterator, we explicily avoid changing 'BinOp'. If
4899 // we changed the RHS of BinOp, the rewriter would fail (since it needs
4900 // to see the original expression). Consider this example:
4901 //
4902 // Foo *obj1, *obj2;
4903 //
4904 // obj1.i = [obj2 rrrr];
4905 //
4906 // 'BinOp' for the previous expression looks like:
4907 //
4908 // (BinaryOperator 0x231ccf0 'int' '='
4909 // (ObjCPropertyRefExpr 0x231cc70 'int' Kind=PropertyRef Property="i"
4910 // (DeclRefExpr 0x231cc50 'Foo *' Var='obj1' 0x231cbb0))
4911 // (ObjCMessageExpr 0x231ccb0 'int' selector=rrrr
4912 // (DeclRefExpr 0x231cc90 'Foo *' Var='obj2' 0x231cbe0)))
4913 //
4914 // 'newStmt' represents the rewritten message expression. For example:
4915 //
4916 // (CallExpr 0x231d300 'id':'struct objc_object *'
4917 // (ParenExpr 0x231d2e0 'int (*)(id, SEL)'
4918 // (CStyleCastExpr 0x231d2c0 'int (*)(id, SEL)'
4919 // (CStyleCastExpr 0x231d220 'void *'
4920 // (DeclRefExpr 0x231d200 'id (id, SEL, ...)' FunctionDecl='objc_msgSend' 0x231cdc0))))
4921 //
4922 // Note that 'newStmt' is passed to RewritePropertySetter so that it
4923 // can be used as the setter argument. ReplaceStmt() will still 'see'
4924 // the original RHS (since we haven't altered BinOp).
4925 //
Mike Stump1eb44332009-09-09 15:08:12 +00004926 // This implies the Rewrite* routines can no longer delete the original
Steve Naroff4c3580e2008-12-04 23:50:32 +00004927 // node. As a result, we now leak the original AST nodes.
4928 //
Steve Naroffb619d952008-12-09 12:56:34 +00004929 return RewritePropertySetter(BinOp, dyn_cast<Expr>(newStmt), SrcRange);
Steve Naroffc77a6362008-12-04 16:24:46 +00004930 } else {
4931 return RewritePropertyGetter(PropRefExpr);
Steve Naroff15f081d2008-12-03 00:56:33 +00004932 }
4933 }
Steve Narofffa15fd92008-10-28 20:29:00 +00004934 if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
4935 return RewriteAtSelector(AtSelector);
Mike Stump1eb44332009-09-09 15:08:12 +00004936
Steve Narofffa15fd92008-10-28 20:29:00 +00004937 if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
4938 return RewriteObjCStringLiteral(AtString);
Mike Stump1eb44332009-09-09 15:08:12 +00004939
Steve Narofffa15fd92008-10-28 20:29:00 +00004940 if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
Steve Naroffc77a6362008-12-04 16:24:46 +00004941#if 0
Steve Narofffa15fd92008-10-28 20:29:00 +00004942 // Before we rewrite it, put the original message expression in a comment.
4943 SourceLocation startLoc = MessExpr->getLocStart();
4944 SourceLocation endLoc = MessExpr->getLocEnd();
Mike Stump1eb44332009-09-09 15:08:12 +00004945
Steve Narofffa15fd92008-10-28 20:29:00 +00004946 const char *startBuf = SM->getCharacterData(startLoc);
4947 const char *endBuf = SM->getCharacterData(endLoc);
Mike Stump1eb44332009-09-09 15:08:12 +00004948
Steve Narofffa15fd92008-10-28 20:29:00 +00004949 std::string messString;
4950 messString += "// ";
4951 messString.append(startBuf, endBuf-startBuf+1);
4952 messString += "\n";
Mike Stump1eb44332009-09-09 15:08:12 +00004953
4954 // FIXME: Missing definition of
Steve Narofffa15fd92008-10-28 20:29:00 +00004955 // InsertText(clang::SourceLocation, char const*, unsigned int).
4956 // InsertText(startLoc, messString.c_str(), messString.size());
4957 // Tried this, but it didn't work either...
4958 // ReplaceText(startLoc, 0, messString.c_str(), messString.size());
Steve Naroffc77a6362008-12-04 16:24:46 +00004959#endif
Steve Narofffa15fd92008-10-28 20:29:00 +00004960 return RewriteMessageExpr(MessExpr);
4961 }
Mike Stump1eb44332009-09-09 15:08:12 +00004962
Steve Narofffa15fd92008-10-28 20:29:00 +00004963 if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
4964 return RewriteObjCTryStmt(StmtTry);
4965
4966 if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
4967 return RewriteObjCSynchronizedStmt(StmtTry);
4968
4969 if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
4970 return RewriteObjCThrowStmt(StmtThrow);
Mike Stump1eb44332009-09-09 15:08:12 +00004971
Steve Narofffa15fd92008-10-28 20:29:00 +00004972 if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
4973 return RewriteObjCProtocolExpr(ProtocolExp);
Mike Stump1eb44332009-09-09 15:08:12 +00004974
4975 if (ObjCForCollectionStmt *StmtForCollection =
Steve Narofffa15fd92008-10-28 20:29:00 +00004976 dyn_cast<ObjCForCollectionStmt>(S))
Mike Stump1eb44332009-09-09 15:08:12 +00004977 return RewriteObjCForCollectionStmt(StmtForCollection,
Steve Narofffa15fd92008-10-28 20:29:00 +00004978 OrigStmtRange.getEnd());
4979 if (BreakStmt *StmtBreakStmt =
4980 dyn_cast<BreakStmt>(S))
4981 return RewriteBreakStmt(StmtBreakStmt);
4982 if (ContinueStmt *StmtContinueStmt =
4983 dyn_cast<ContinueStmt>(S))
4984 return RewriteContinueStmt(StmtContinueStmt);
Mike Stump1eb44332009-09-09 15:08:12 +00004985
4986 // Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
Steve Narofffa15fd92008-10-28 20:29:00 +00004987 // and cast exprs.
4988 if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
4989 // FIXME: What we're doing here is modifying the type-specifier that
4990 // precedes the first Decl. In the future the DeclGroup should have
Mike Stump1eb44332009-09-09 15:08:12 +00004991 // a separate type-specifier that we can rewrite.
Steve Naroff3d7e7862009-12-05 15:55:59 +00004992 // NOTE: We need to avoid rewriting the DeclStmt if it is within
4993 // the context of an ObjCForCollectionStmt. For example:
4994 // NSArray *someArray;
4995 // for (id <FooProtocol> index in someArray) ;
4996 // This is because RewriteObjCForCollectionStmt() does textual rewriting
4997 // and it depends on the original text locations/positions.
Benjamin Kramerb2041de2009-12-05 22:16:51 +00004998 if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
Steve Naroff3d7e7862009-12-05 15:55:59 +00004999 RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
Mike Stump1eb44332009-09-09 15:08:12 +00005000
Steve Narofffa15fd92008-10-28 20:29:00 +00005001 // Blocks rewrite rules.
5002 for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
5003 DI != DE; ++DI) {
Douglas Gregor4afa39d2009-01-20 01:17:11 +00005004 Decl *SD = *DI;
Steve Narofffa15fd92008-10-28 20:29:00 +00005005 if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005006 if (isTopLevelBlockPointerType(ND->getType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005007 RewriteBlockPointerDecl(ND);
Mike Stump1eb44332009-09-09 15:08:12 +00005008 else if (ND->getType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005009 CheckFunctionPointerDecl(ND->getType(), ND);
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005010 if (VarDecl *VD = dyn_cast<VarDecl>(SD))
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005011 if (VD->hasAttr<BlocksAttr>()) {
5012 static unsigned uniqueByrefDeclCount = 0;
5013 assert(!BlockByRefDeclNo.count(ND) &&
5014 "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl");
5015 BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
Fariborz Jahanian52b08f22009-12-23 02:07:37 +00005016 RewriteByRefVar(VD);
Fariborz Jahaniana73165e2010-01-14 23:05:52 +00005017 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005018 }
5019 if (TypedefDecl *TD = dyn_cast<TypedefDecl>(SD)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005020 if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005021 RewriteBlockPointerDecl(TD);
Mike Stump1eb44332009-09-09 15:08:12 +00005022 else if (TD->getUnderlyingType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005023 CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
5024 }
5025 }
5026 }
Mike Stump1eb44332009-09-09 15:08:12 +00005027
Steve Narofffa15fd92008-10-28 20:29:00 +00005028 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
5029 RewriteObjCQualifiedInterfaceTypes(CE);
Mike Stump1eb44332009-09-09 15:08:12 +00005030
5031 if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
Steve Narofffa15fd92008-10-28 20:29:00 +00005032 isa<DoStmt>(S) || isa<ForStmt>(S)) {
5033 assert(!Stmts.empty() && "Statement stack is empty");
Mike Stump1eb44332009-09-09 15:08:12 +00005034 assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||
5035 isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005036 && "Statement stack mismatch");
5037 Stmts.pop_back();
5038 }
5039 // Handle blocks rewriting.
5040 if (BlockDeclRefExpr *BDRE = dyn_cast<BlockDeclRefExpr>(S)) {
5041 if (BDRE->isByRef())
Steve Naroff621edce2009-04-29 16:37:50 +00005042 return RewriteBlockDeclRefExpr(BDRE);
Steve Narofffa15fd92008-10-28 20:29:00 +00005043 }
Fariborz Jahanianf381cc92010-01-04 19:50:07 +00005044 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
5045 ValueDecl *VD = DRE->getDecl();
5046 if (VD->hasAttr<BlocksAttr>())
5047 return RewriteBlockDeclRefExpr(DRE);
5048 }
5049
Steve Narofffa15fd92008-10-28 20:29:00 +00005050 if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00005051 if (CE->getCallee()->getType()->isBlockPointerType()) {
Fariborz Jahanian8a9e1702009-12-15 17:30:20 +00005052 Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
Steve Naroffaa4d5ae2008-10-30 10:07:53 +00005053 ReplaceStmt(S, BlockCall);
5054 return BlockCall;
5055 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005056 }
Steve Naroffb2f9e512008-11-03 23:29:32 +00005057 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005058 RewriteCastExpr(CE);
5059 }
5060#if 0
5061 if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
Ted Kremenek8189cde2009-02-07 01:47:29 +00005062 CastExpr *Replacement = new (Context) CastExpr(ICE->getType(), ICE->getSubExpr(), SourceLocation());
Steve Narofffa15fd92008-10-28 20:29:00 +00005063 // Get the new text.
5064 std::string SStr;
5065 llvm::raw_string_ostream Buf(SStr);
Eli Friedman3a9eb442009-05-30 05:19:26 +00005066 Replacement->printPretty(Buf, *Context);
Steve Narofffa15fd92008-10-28 20:29:00 +00005067 const std::string &Str = Buf.str();
5068
5069 printf("CAST = %s\n", &Str[0]);
5070 InsertText(ICE->getSubExpr()->getLocStart(), &Str[0], Str.size());
5071 delete S;
5072 return Replacement;
5073 }
5074#endif
5075 // Return this stmt unmodified.
5076 return S;
5077}
5078
Steve Naroff3d7e7862009-12-05 15:55:59 +00005079void RewriteObjC::RewriteRecordBody(RecordDecl *RD) {
5080 for (RecordDecl::field_iterator i = RD->field_begin(),
5081 e = RD->field_end(); i != e; ++i) {
5082 FieldDecl *FD = *i;
5083 if (isTopLevelBlockPointerType(FD->getType()))
5084 RewriteBlockPointerDecl(FD);
5085 if (FD->getType()->isObjCQualifiedIdType() ||
5086 FD->getType()->isObjCQualifiedInterfaceType())
5087 RewriteObjCQualifiedInterfaceTypes(FD);
5088 }
5089}
5090
Steve Narofffa15fd92008-10-28 20:29:00 +00005091/// HandleDeclInMainFile - This is called for each top-level decl defined in the
5092/// main file of the input.
5093void RewriteObjC::HandleDeclInMainFile(Decl *D) {
5094 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
Steve Naroffcb735302008-12-17 00:20:22 +00005095 if (FD->isOverloadedOperator())
5096 return;
Mike Stump1eb44332009-09-09 15:08:12 +00005097
Steve Narofffa15fd92008-10-28 20:29:00 +00005098 // Since function prototypes don't have ParmDecl's, we check the function
5099 // prototype. This enables us to rewrite function declarations and
5100 // definitions using the same code.
Douglas Gregor72564e72009-02-26 23:50:07 +00005101 RewriteBlocksInFunctionProtoType(FD->getType(), FD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005102
Sebastian Redld3a413d2009-04-26 20:35:05 +00005103 // FIXME: If this should support Obj-C++, support CXXTryStmt
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00005104 if (CompoundStmt *Body = FD->getCompoundBody()) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005105 CurFunctionDef = FD;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00005106 CurFunctionDeclToDeclareForBlock = FD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005107 CollectPropertySetters(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005108 CurrentBody = Body;
Ted Kremenekeaab2062009-03-12 18:33:24 +00005109 Body =
5110 cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
5111 FD->setBody(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005112 CurrentBody = 0;
5113 if (PropParentMap) {
5114 delete PropParentMap;
5115 PropParentMap = 0;
5116 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005117 // This synthesizes and inserts the block "impl" struct, invoke function,
5118 // and any copy/dispose helper functions.
5119 InsertBlockLiteralsWithinFunction(FD);
5120 CurFunctionDef = 0;
Fariborz Jahanianabfd83e2010-01-14 00:35:56 +00005121 CurFunctionDeclToDeclareForBlock = 0;
Mike Stump1eb44332009-09-09 15:08:12 +00005122 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005123 return;
5124 }
5125 if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
Argyrios Kyrtzidis6fb0aee2009-06-30 02:35:26 +00005126 if (CompoundStmt *Body = MD->getCompoundBody()) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005127 CurMethodDef = MD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005128 CollectPropertySetters(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005129 CurrentBody = Body;
Ted Kremenekeaab2062009-03-12 18:33:24 +00005130 Body =
5131 cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
5132 MD->setBody(Body);
Steve Naroff8599e7a2008-12-08 16:43:47 +00005133 CurrentBody = 0;
5134 if (PropParentMap) {
5135 delete PropParentMap;
5136 PropParentMap = 0;
5137 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005138 InsertBlockLiteralsWithinMethod(MD);
5139 CurMethodDef = 0;
5140 }
5141 }
5142 if (ObjCImplementationDecl *CI = dyn_cast<ObjCImplementationDecl>(D))
5143 ClassImplementation.push_back(CI);
5144 else if (ObjCCategoryImplDecl *CI = dyn_cast<ObjCCategoryImplDecl>(D))
5145 CategoryImplementation.push_back(CI);
5146 else if (ObjCClassDecl *CD = dyn_cast<ObjCClassDecl>(D))
5147 RewriteForwardClassDecl(CD);
5148 else if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
5149 RewriteObjCQualifiedInterfaceTypes(VD);
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005150 if (isTopLevelBlockPointerType(VD->getType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005151 RewriteBlockPointerDecl(VD);
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005152 else if (VD->getType()->isFunctionPointerType()) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005153 CheckFunctionPointerDecl(VD->getType(), VD);
5154 if (VD->getInit()) {
Steve Naroffb2f9e512008-11-03 23:29:32 +00005155 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005156 RewriteCastExpr(CE);
5157 }
5158 }
Steve Naroff3d7e7862009-12-05 15:55:59 +00005159 } else if (VD->getType()->isRecordType()) {
5160 RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
5161 if (RD->isDefinition())
5162 RewriteRecordBody(RD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005163 }
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005164 if (VD->getInit()) {
5165 GlobalVarDecl = VD;
Steve Naroffc77a6362008-12-04 16:24:46 +00005166 CollectPropertySetters(VD->getInit());
Steve Naroff8599e7a2008-12-08 16:43:47 +00005167 CurrentBody = VD->getInit();
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005168 RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
Steve Naroff8599e7a2008-12-08 16:43:47 +00005169 CurrentBody = 0;
5170 if (PropParentMap) {
5171 delete PropParentMap;
5172 PropParentMap = 0;
5173 }
Mike Stump1eb44332009-09-09 15:08:12 +00005174 SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(),
Chris Lattner8ec03f52008-11-24 03:54:41 +00005175 VD->getNameAsCString());
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005176 GlobalVarDecl = 0;
5177
5178 // This is needed for blocks.
Steve Naroffb2f9e512008-11-03 23:29:32 +00005179 if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
Steve Naroff8e2f57a2008-10-29 18:15:37 +00005180 RewriteCastExpr(CE);
5181 }
5182 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005183 return;
5184 }
5185 if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) {
Steve Naroff01f2ffa2008-12-11 21:05:33 +00005186 if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
Steve Narofffa15fd92008-10-28 20:29:00 +00005187 RewriteBlockPointerDecl(TD);
Mike Stump1eb44332009-09-09 15:08:12 +00005188 else if (TD->getUnderlyingType()->isFunctionPointerType())
Steve Narofffa15fd92008-10-28 20:29:00 +00005189 CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
Steve Naroff3d7e7862009-12-05 15:55:59 +00005190 else if (TD->getUnderlyingType()->isRecordType()) {
5191 RecordDecl *RD = TD->getUnderlyingType()->getAs<RecordType>()->getDecl();
5192 if (RD->isDefinition())
5193 RewriteRecordBody(RD);
5194 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005195 return;
5196 }
5197 if (RecordDecl *RD = dyn_cast<RecordDecl>(D)) {
Steve Naroff3d7e7862009-12-05 15:55:59 +00005198 if (RD->isDefinition())
5199 RewriteRecordBody(RD);
Steve Narofffa15fd92008-10-28 20:29:00 +00005200 return;
5201 }
5202 // Nothing yet.
5203}
5204
Chris Lattnerdacbc5d2009-03-28 04:11:33 +00005205void RewriteObjC::HandleTranslationUnit(ASTContext &C) {
Steve Narofffa15fd92008-10-28 20:29:00 +00005206 // Get the top-level buffer that this corresponds to.
Mike Stump1eb44332009-09-09 15:08:12 +00005207
Steve Narofffa15fd92008-10-28 20:29:00 +00005208 // Rewrite tabs if we care.
5209 //RewriteTabs();
Mike Stump1eb44332009-09-09 15:08:12 +00005210
Steve Narofffa15fd92008-10-28 20:29:00 +00005211 if (Diags.hasErrorOccurred())
5212 return;
Mike Stump1eb44332009-09-09 15:08:12 +00005213
Steve Narofffa15fd92008-10-28 20:29:00 +00005214 RewriteInclude();
Mike Stump1eb44332009-09-09 15:08:12 +00005215
Steve Naroff621edce2009-04-29 16:37:50 +00005216 // Here's a great place to add any extra declarations that may be needed.
5217 // Write out meta data for each @protocol(<expr>).
Mike Stump1eb44332009-09-09 15:08:12 +00005218 for (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
Steve Naroff621edce2009-04-29 16:37:50 +00005219 E = ProtocolExprDecls.end(); I != E; ++I)
5220 RewriteObjCProtocolMetaData(*I, "", "", Preamble);
5221
Mike Stump1eb44332009-09-09 15:08:12 +00005222 InsertText(SM->getLocForStartOfFile(MainFileID),
Steve Narofffa15fd92008-10-28 20:29:00 +00005223 Preamble.c_str(), Preamble.size(), false);
Steve Naroff0aab7962008-11-14 14:10:01 +00005224 if (ClassImplementation.size() || CategoryImplementation.size())
5225 RewriteImplementations();
Steve Naroff621edce2009-04-29 16:37:50 +00005226
Steve Narofffa15fd92008-10-28 20:29:00 +00005227 // Get the buffer corresponding to MainFileID. If we haven't changed it, then
5228 // we are done.
Mike Stump1eb44332009-09-09 15:08:12 +00005229 if (const RewriteBuffer *RewriteBuf =
Steve Narofffa15fd92008-10-28 20:29:00 +00005230 Rewrite.getRewriteBufferFor(MainFileID)) {
5231 //printf("Changed:\n");
5232 *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
5233 } else {
5234 fprintf(stderr, "No changes\n");
5235 }
Steve Narofface66252008-11-13 20:07:04 +00005236
Steve Naroff621edce2009-04-29 16:37:50 +00005237 if (ClassImplementation.size() || CategoryImplementation.size() ||
5238 ProtocolExprDecls.size()) {
Steve Naroff0aab7962008-11-14 14:10:01 +00005239 // Rewrite Objective-c meta data*
5240 std::string ResultStr;
5241 SynthesizeMetaDataIntoBuffer(ResultStr);
5242 // Emit metadata.
5243 *OutFile << ResultStr;
5244 }
Steve Narofffa15fd92008-10-28 20:29:00 +00005245 OutFile->flush();
5246}
5247