1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
//===--- ObjCMT.cpp - ObjC Migrate Tool -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/ARCMigrate/ARCMTActions.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/MultiplexConsumer.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/AST/NSAPI.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Edit/Rewriters.h"
#include "clang/Edit/EditedSource.h"
#include "clang/Edit/Commit.h"
#include "clang/Edit/EditsReceiver.h"
#include "clang/Rewrite/Rewriter.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/FileManager.h"
#include "llvm/ADT/SmallString.h"
using namespace clang;
using namespace arcmt;
namespace {
class ObjCMigrateASTConsumer : public ASTConsumer {
void migrateDecl(Decl *D);
public:
std::string MigrateDir;
bool MigrateLiterals;
bool MigrateSubscripting;
llvm::OwningPtr<NSAPI> NSAPIObj;
llvm::OwningPtr<edit::EditedSource> Editor;
FileRemapper &Remapper;
FileManager &FileMgr;
const PreprocessingRecord *PPRec;
bool IsOutputFile;
ObjCMigrateASTConsumer(StringRef migrateDir,
bool migrateLiterals,
bool migrateSubscripting,
FileRemapper &remapper,
FileManager &fileMgr,
const PreprocessingRecord *PPRec,
bool isOutputFile = false)
: MigrateDir(migrateDir),
MigrateLiterals(migrateLiterals),
MigrateSubscripting(migrateSubscripting),
Remapper(remapper), FileMgr(fileMgr), PPRec(PPRec),
IsOutputFile(isOutputFile) { }
protected:
virtual void Initialize(ASTContext &Context) {
NSAPIObj.reset(new NSAPI(Context));
Editor.reset(new edit::EditedSource(Context.getSourceManager(),
Context.getLangOpts(),
PPRec));
}
virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
migrateDecl(*I);
return true;
}
virtual void HandleInterestingDecl(DeclGroupRef DG) {
// Ignore decls from the PCH.
}
virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) {
ObjCMigrateASTConsumer::HandleTopLevelDecl(DG);
}
virtual void HandleTranslationUnit(ASTContext &Ctx);
};
}
ObjCMigrateAction::ObjCMigrateAction(FrontendAction *WrappedAction,
StringRef migrateDir,
bool migrateLiterals,
bool migrateSubscripting)
: WrapperFrontendAction(WrappedAction), MigrateDir(migrateDir),
MigrateLiterals(migrateLiterals), MigrateSubscripting(migrateSubscripting),
CompInst(0) {
if (MigrateDir.empty())
MigrateDir = "."; // user current directory if none is given.
}
ASTConsumer *ObjCMigrateAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
ASTConsumer *
WrappedConsumer = WrapperFrontendAction::CreateASTConsumer(CI, InFile);
ASTConsumer *MTConsumer = new ObjCMigrateASTConsumer(MigrateDir,
MigrateLiterals,
MigrateSubscripting,
Remapper,
CompInst->getFileManager(),
CompInst->getPreprocessor().getPreprocessingRecord());
ASTConsumer *Consumers[] = { MTConsumer, WrappedConsumer };
return new MultiplexConsumer(Consumers);
}
bool ObjCMigrateAction::BeginInvocation(CompilerInstance &CI) {
Remapper.initFromDisk(MigrateDir, CI.getDiagnostics(),
/*ignoreIfFilesChanges=*/true);
CompInst = &CI;
CI.getDiagnostics().setIgnoreAllWarnings(true);
CI.getPreprocessorOpts().DetailedRecord = true;
CI.getPreprocessorOpts().DetailedRecordConditionalDirectives = true;
return true;
}
namespace {
class ObjCMigrator : public RecursiveASTVisitor<ObjCMigrator> {
ObjCMigrateASTConsumer &Consumer;
public:
ObjCMigrator(ObjCMigrateASTConsumer &consumer) : Consumer(consumer) { }
bool shouldVisitTemplateInstantiations() const { return false; }
bool shouldWalkTypesOfTypeLocs() const { return false; }
bool VisitObjCMessageExpr(ObjCMessageExpr *E) {
if (Consumer.MigrateLiterals) {
edit::Commit commit(*Consumer.Editor);
edit::rewriteToObjCLiteralSyntax(E, *Consumer.NSAPIObj, commit);
Consumer.Editor->commit(commit);
}
if (Consumer.MigrateSubscripting) {
edit::Commit commit(*Consumer.Editor);
edit::rewriteToObjCSubscriptSyntax(E, *Consumer.NSAPIObj, commit);
Consumer.Editor->commit(commit);
}
return true;
}
bool TraverseObjCMessageExpr(ObjCMessageExpr *E) {
// Do depth first; we want to rewrite the subexpressions first so that if
// we have to move expressions we will move them already rewritten.
for (Stmt::child_range range = E->children(); range; ++range)
if (!TraverseStmt(*range))
return false;
return WalkUpFromObjCMessageExpr(E);
}
};
}
void ObjCMigrateASTConsumer::migrateDecl(Decl *D) {
if (!D)
return;
if (isa<ObjCMethodDecl>(D))
return; // Wait for the ObjC container declaration.
ObjCMigrator(*this).TraverseDecl(D);
}
namespace {
class RewritesReceiver : public edit::EditsReceiver {
Rewriter &Rewrite;
public:
RewritesReceiver(Rewriter &Rewrite) : Rewrite(Rewrite) { }
virtual void insert(SourceLocation loc, StringRef text) {
Rewrite.InsertText(loc, text);
}
virtual void replace(CharSourceRange range, StringRef text) {
Rewrite.ReplaceText(range.getBegin(), Rewrite.getRangeSize(range), text);
}
};
}
void ObjCMigrateASTConsumer::HandleTranslationUnit(ASTContext &Ctx) {
Rewriter rewriter(Ctx.getSourceManager(), Ctx.getLangOpts());
RewritesReceiver Rec(rewriter);
Editor->applyRewrites(Rec);
for (Rewriter::buffer_iterator
I = rewriter.buffer_begin(), E = rewriter.buffer_end(); I != E; ++I) {
FileID FID = I->first;
RewriteBuffer &buf = I->second;
const FileEntry *file = Ctx.getSourceManager().getFileEntryForID(FID);
assert(file);
llvm::SmallString<512> newText;
llvm::raw_svector_ostream vecOS(newText);
buf.write(vecOS);
vecOS.flush();
llvm::MemoryBuffer *memBuf = llvm::MemoryBuffer::getMemBufferCopy(
StringRef(newText.data(), newText.size()), file->getName());
llvm::SmallString<64> filePath(file->getName());
FileMgr.FixupRelativePath(filePath);
Remapper.remap(filePath.str(), memBuf);
}
if (IsOutputFile) {
Remapper.flushToFile(MigrateDir, Ctx.getDiagnostics());
} else {
Remapper.flushToDisk(MigrateDir, Ctx.getDiagnostics());
}
}
bool MigrateSourceAction::BeginInvocation(CompilerInstance &CI) {
CI.getPreprocessorOpts().DetailedRecord = true;
CI.getPreprocessorOpts().DetailedRecordConditionalDirectives = true;
return true;
}
ASTConsumer *MigrateSourceAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
return new ObjCMigrateASTConsumer(CI.getFrontendOpts().OutputFile,
/*MigrateLiterals=*/true,
/*MigrateSubscripting=*/true,
Remapper,
CI.getFileManager(),
CI.getPreprocessor().getPreprocessingRecord(),
/*isOutputFile=*/true);
}
|
