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14 | pmbaty | 1 | //===-- FileRemapper.h - File Remapping Helper ------------------*- C++ -*-===// |
2 | // |
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3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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4 | // See https://llvm.org/LICENSE.txt for license information. |
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5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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6 | // |
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7 | //===----------------------------------------------------------------------===// |
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8 | |||
9 | #ifndef LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H |
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10 | #define LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H |
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11 | |||
12 | #include "clang/Basic/LLVM.h" |
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13 | #include "llvm/ADT/DenseMap.h" |
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14 | #include "llvm/ADT/PointerUnion.h" |
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15 | #include "llvm/ADT/STLExtras.h" |
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16 | #include "llvm/ADT/StringRef.h" |
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17 | #include <memory> |
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18 | |||
19 | namespace llvm { |
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20 | class MemoryBuffer; |
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21 | class MemoryBufferRef; |
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22 | } |
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23 | |||
24 | namespace clang { |
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25 | class FileManager; |
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26 | class FileEntry; |
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27 | class DiagnosticsEngine; |
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28 | class PreprocessorOptions; |
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29 | |||
30 | namespace arcmt { |
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31 | |||
32 | class FileRemapper { |
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33 | // FIXME: Reuse the same FileManager for multiple ASTContexts. |
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34 | std::unique_ptr<FileManager> FileMgr; |
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35 | |||
36 | typedef llvm::PointerUnion<const FileEntry *, llvm::MemoryBuffer *> Target; |
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37 | typedef llvm::DenseMap<const FileEntry *, Target> MappingsTy; |
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38 | MappingsTy FromToMappings; |
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39 | |||
40 | llvm::DenseMap<const FileEntry *, const FileEntry *> ToFromMappings; |
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41 | |||
42 | public: |
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43 | FileRemapper(); |
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44 | ~FileRemapper(); |
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45 | |||
46 | bool initFromDisk(StringRef outputDir, DiagnosticsEngine &Diag, |
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47 | bool ignoreIfFilesChanged); |
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48 | bool initFromFile(StringRef filePath, DiagnosticsEngine &Diag, |
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49 | bool ignoreIfFilesChanged); |
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50 | bool flushToDisk(StringRef outputDir, DiagnosticsEngine &Diag); |
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51 | bool flushToFile(StringRef outputPath, DiagnosticsEngine &Diag); |
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52 | |||
53 | bool overwriteOriginal(DiagnosticsEngine &Diag, |
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54 | StringRef outputDir = StringRef()); |
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55 | |||
56 | void remap(StringRef filePath, std::unique_ptr<llvm::MemoryBuffer> memBuf); |
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57 | |||
58 | void applyMappings(PreprocessorOptions &PPOpts) const; |
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59 | |||
60 | /// Iterate through all the mappings. |
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61 | void forEachMapping( |
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62 | llvm::function_ref<void(StringRef, StringRef)> CaptureFile, |
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63 | llvm::function_ref<void(StringRef, const llvm::MemoryBufferRef &)> |
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64 | CaptureBuffer) const; |
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65 | |||
66 | void clear(StringRef outputDir = StringRef()); |
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67 | |||
68 | private: |
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69 | void remap(const FileEntry *file, std::unique_ptr<llvm::MemoryBuffer> memBuf); |
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70 | void remap(const FileEntry *file, const FileEntry *newfile); |
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71 | |||
72 | const FileEntry *getOriginalFile(StringRef filePath); |
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73 | void resetTarget(Target &targ); |
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74 | |||
75 | bool report(const Twine &err, DiagnosticsEngine &Diag); |
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76 | |||
77 | std::string getRemapInfoFile(StringRef outputDir); |
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78 | }; |
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79 | |||
80 | } // end namespace arcmt |
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81 | |||
82 | } // end namespace clang |
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83 | |||
84 | #endif |