FileRemapper.h source code [clang_source_code/include/clang/ARCMigrate/FileRemapper.h]

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/StringRef.h"
16	#include <memory>
17
18	namespace llvm {
19	class MemoryBuffer;
20	}
21
22	namespace clang {
23	class FileManager;
24	class FileEntry;
25	class DiagnosticsEngine;
26	class PreprocessorOptions;
27
28	namespace arcmt {
29
30	class FileRemapper {
31	// FIXME: Reuse the same FileManager for multiple ASTContexts.
32	std::unique_ptr<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(StringRef outputDir, DiagnosticsEngine &Diag,
45	bool ignoreIfFilesChanged);
46	bool initFromFile(StringRef filePath, DiagnosticsEngine &Diag,
47	bool ignoreIfFilesChanged);
48	bool flushToDisk(StringRef outputDir, DiagnosticsEngine &Diag);
49	bool flushToFile(StringRef outputPath, DiagnosticsEngine &Diag);
50
51	bool overwriteOriginal(DiagnosticsEngine &Diag,
52	StringRef outputDir = StringRef());
53
54	void remap(StringRef filePath, std::unique_ptr<llvm::MemoryBuffer> memBuf);
55
56	void applyMappings(PreprocessorOptions &PPOpts) const;
57
58	void clear(StringRef outputDir = StringRef());
59
60	private:
61	void remap(const FileEntry *file, std::unique_ptr<llvm::MemoryBuffer> memBuf);
62	void remap(const FileEntry file, const FileEntry newfile);
63
64	const FileEntry *getOriginalFile(StringRef filePath);
65	void resetTarget(Target &targ);
66
67	bool report(const Twine &err, DiagnosticsEngine &Diag);
68
69	std::string getRemapInfoFile(StringRef outputDir);
70	};
71
72	} // end namespace arcmt
73
74	} // end namespace clang
75
76	#endif
77

clang::arcmt::FileRemapper::FileMgr

clang::arcmt::FileRemapper::FromToMappings

clang::arcmt::FileRemapper::ToFromMappings

clang::arcmt::FileRemapper::initFromDisk

clang::arcmt::FileRemapper::initFromFile

clang::arcmt::FileRemapper::flushToDisk

clang::arcmt::FileRemapper::flushToFile

clang::arcmt::FileRemapper::overwriteOriginal

clang::arcmt::FileRemapper::remap

clang::arcmt::FileRemapper::applyMappings

clang::arcmt::FileRemapper::clear

clang::arcmt::FileRemapper::remap

clang::arcmt::FileRemapper::getOriginalFile

clang::arcmt::FileRemapper::resetTarget

clang::arcmt::FileRemapper::report

clang::arcmt::FileRemapper::getRemapInfoFile

Clang Project