]> CyberLeo.Net >> Repos - FreeBSD/stable/9.git/blob - contrib/llvm/tools/clang/include/clang/ARCMigrate/FileRemapper.h
Copy head to stable/9 as part of 9.0-RELEASE release cycle.
[FreeBSD/stable/9.git] / contrib / llvm / tools / clang / include / clang / ARCMigrate / FileRemapper.h
1 //===-- FileRemapper.h - File Remapping Helper ------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #ifndef LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
11 #define LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
12
13 #include "llvm/ADT/OwningPtr.h"
14 #include "llvm/ADT/PointerUnion.h"
15 #include "llvm/ADT/DenseMap.h"
16 #include "llvm/ADT/StringRef.h"
17
18 namespace llvm {
19   class MemoryBuffer;
20 }
21
22 namespace clang {
23   class FileManager;
24   class FileEntry;
25   class Diagnostic;
26   class CompilerInvocation;
27
28 namespace arcmt {
29
30 class FileRemapper {
31   // FIXME: Reuse the same FileManager for multiple ASTContexts.
32   llvm::OwningPtr<FileManager> FileMgr;
33
34   typedef llvm::PointerUnion<const FileEntry *, llvm::MemoryBuffer *> Target;
35   typedef llvm::DenseMap<const FileEntry *, Target> MappingsTy;
36   MappingsTy FromToMappings;
37
38   llvm::DenseMap<const FileEntry *, const FileEntry *> ToFromMappings;
39
40 public:
41   FileRemapper();
42   ~FileRemapper();
43   
44   bool initFromDisk(llvm::StringRef outputDir, Diagnostic &Diag,
45                     bool ignoreIfFilesChanged);
46   bool flushToDisk(llvm::StringRef outputDir, Diagnostic &Diag);
47
48   bool overwriteOriginal(Diagnostic &Diag,
49                          llvm::StringRef outputDir = llvm::StringRef());
50
51   void remap(llvm::StringRef filePath, llvm::MemoryBuffer *memBuf);
52   void remap(llvm::StringRef filePath, llvm::StringRef newPath);
53
54   void applyMappings(CompilerInvocation &CI) const;
55
56   void transferMappingsAndClear(CompilerInvocation &CI);
57
58   void clear(llvm::StringRef outputDir = llvm::StringRef());
59
60 private:
61   void remap(const FileEntry *file, llvm::MemoryBuffer *memBuf);
62   void remap(const FileEntry *file, const FileEntry *newfile);
63
64   const FileEntry *getOriginalFile(llvm::StringRef filePath);
65   void resetTarget(Target &targ);
66
67   bool report(const std::string &err, Diagnostic &Diag);
68
69   std::string getRemapInfoFile(llvm::StringRef outputDir);
70 };
71
72 } // end namespace arcmt
73
74 }  // end namespace clang
75
76 #endif