clang 17.0.0git
FileRemapper.h
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1//===-- FileRemapper.h - File Remapping Helper ------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
10#define LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
11
12#include "clang/Basic/LLVM.h"
13#include "llvm/ADT/DenseMap.h"
14#include "llvm/ADT/PointerUnion.h"
15#include "llvm/ADT/STLExtras.h"
16#include "llvm/ADT/StringRef.h"
17#include <memory>
18
19namespace llvm {
20 class MemoryBuffer;
21 class MemoryBufferRef;
22}
23
24namespace clang {
25 class FileManager;
26 class FileEntry;
27 class DiagnosticsEngine;
28 class PreprocessorOptions;
29
30namespace arcmt {
31
33 // FIXME: Reuse the same FileManager for multiple ASTContexts.
34 std::unique_ptr<FileManager> FileMgr;
35
36 typedef llvm::PointerUnion<const FileEntry *, llvm::MemoryBuffer *> Target;
37 typedef llvm::DenseMap<const FileEntry *, Target> MappingsTy;
38 MappingsTy FromToMappings;
39
40 llvm::DenseMap<const FileEntry *, const FileEntry *> ToFromMappings;
41
42public:
45
46 bool initFromDisk(StringRef outputDir, DiagnosticsEngine &Diag,
47 bool ignoreIfFilesChanged);
48 bool initFromFile(StringRef filePath, DiagnosticsEngine &Diag,
49 bool ignoreIfFilesChanged);
50 bool flushToDisk(StringRef outputDir, DiagnosticsEngine &Diag);
51 bool flushToFile(StringRef outputPath, DiagnosticsEngine &Diag);
52
54 StringRef outputDir = StringRef());
55
56 void remap(StringRef filePath, std::unique_ptr<llvm::MemoryBuffer> memBuf);
57
58 void applyMappings(PreprocessorOptions &PPOpts) const;
59
60 /// Iterate through all the mappings.
61 void forEachMapping(
62 llvm::function_ref<void(StringRef, StringRef)> CaptureFile,
63 llvm::function_ref<void(StringRef, const llvm::MemoryBufferRef &)>
64 CaptureBuffer) const;
65
66 void clear(StringRef outputDir = StringRef());
67
68private:
69 void remap(const FileEntry *file, std::unique_ptr<llvm::MemoryBuffer> memBuf);
70 void remap(const FileEntry *file, const FileEntry *newfile);
71
72 const FileEntry *getOriginalFile(StringRef filePath);
73 void resetTarget(Target &targ);
74
75 bool report(const Twine &err, DiagnosticsEngine &Diag);
76
77 std::string getRemapInfoFile(StringRef outputDir);
78};
79
80} // end namespace arcmt
81
82} // end namespace clang
83
84#endif
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified.
static DiagnosticBuilder Diag(DiagnosticsEngine *Diags, const LangOptions &Features, FullSourceLoc TokLoc, const char *TokBegin, const char *TokRangeBegin, const char *TokRangeEnd, unsigned DiagID)
Produce a diagnostic highlighting some portion of a literal.
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:192
Cached information about one file (either on disk or in the virtual file system).
Definition: FileEntry.h:353
PreprocessorOptions - This class is used for passing the various options used in preprocessor initial...
bool initFromFile(StringRef filePath, DiagnosticsEngine &Diag, bool ignoreIfFilesChanged)
void forEachMapping(llvm::function_ref< void(StringRef, StringRef)> CaptureFile, llvm::function_ref< void(StringRef, const llvm::MemoryBufferRef &)> CaptureBuffer) const
Iterate through all the mappings.
bool flushToDisk(StringRef outputDir, DiagnosticsEngine &Diag)
bool flushToFile(StringRef outputPath, DiagnosticsEngine &Diag)
void remap(StringRef filePath, std::unique_ptr< llvm::MemoryBuffer > memBuf)
void clear(StringRef outputDir=StringRef())
void applyMappings(PreprocessorOptions &PPOpts) const
bool initFromDisk(StringRef outputDir, DiagnosticsEngine &Diag, bool ignoreIfFilesChanged)
bool overwriteOriginal(DiagnosticsEngine &Diag, StringRef outputDir=StringRef())
YAML serialization mapping.
Definition: Dominators.h:30