1 //===- ARCMigrate.cpp - Clang-C ARC Migration Library ---------------------===// 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 // This file implements the main API hooks in the Clang-C ARC Migration library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang-c/Index.h" 15 16 #include "CXString.h" 17 #include "clang/ARCMigrate/ARCMT.h" 18 #include "clang/Frontend/TextDiagnosticBuffer.h" 19 #include "llvm/Support/FileSystem.h" 20 21 using namespace clang; 22 using namespace arcmt; 23 24 namespace { 25 26 struct Remap { 27 std::vector<std::pair<std::string, std::string> > Vec; 28 }; 29 30 } // anonymous namespace. 31 32 //===----------------------------------------------------------------------===// 33 // libClang public APIs. 34 //===----------------------------------------------------------------------===// 35 36 extern "C" { 37 38 CXRemapping clang_getRemappings(const char *migrate_dir_path) { 39 bool Logging = ::getenv("LIBCLANG_LOGGING"); 40 41 if (!migrate_dir_path) { 42 if (Logging) 43 llvm::errs() << "clang_getRemappings was called with NULL parameter\n"; 44 return 0; 45 } 46 47 bool exists = false; 48 llvm::sys::fs::exists(migrate_dir_path, exists); 49 if (!exists) { 50 if (Logging) { 51 llvm::errs() << "Error by clang_getRemappings(\"" << migrate_dir_path 52 << "\")\n"; 53 llvm::errs() << "\"" << migrate_dir_path << "\" does not exist\n"; 54 } 55 return 0; 56 } 57 58 TextDiagnosticBuffer diagBuffer; 59 OwningPtr<Remap> remap(new Remap()); 60 61 bool err = arcmt::getFileRemappings(remap->Vec, migrate_dir_path,&diagBuffer); 62 63 if (err) { 64 if (Logging) { 65 llvm::errs() << "Error by clang_getRemappings(\"" << migrate_dir_path 66 << "\")\n"; 67 for (TextDiagnosticBuffer::const_iterator 68 I = diagBuffer.err_begin(), E = diagBuffer.err_end(); I != E; ++I) 69 llvm::errs() << I->second << '\n'; 70 } 71 return 0; 72 } 73 74 return remap.take(); 75 } 76 77 CXRemapping clang_getRemappingsFromFileList(const char **filePaths, 78 unsigned numFiles) { 79 bool Logging = ::getenv("LIBCLANG_LOGGING"); 80 81 OwningPtr<Remap> remap(new Remap()); 82 83 if (numFiles == 0) { 84 if (Logging) 85 llvm::errs() << "clang_getRemappingsFromFileList was called with " 86 "numFiles=0\n"; 87 return remap.take(); 88 } 89 90 if (!filePaths) { 91 if (Logging) 92 llvm::errs() << "clang_getRemappingsFromFileList was called with " 93 "NULL filePaths\n"; 94 return 0; 95 } 96 97 TextDiagnosticBuffer diagBuffer; 98 SmallVector<StringRef, 32> Files; 99 for (unsigned i = 0; i != numFiles; ++i) 100 Files.push_back(filePaths[i]); 101 102 bool err = arcmt::getFileRemappingsFromFileList(remap->Vec, Files, 103 &diagBuffer); 104 105 if (err) { 106 if (Logging) { 107 llvm::errs() << "Error by clang_getRemappingsFromFileList\n"; 108 for (TextDiagnosticBuffer::const_iterator 109 I = diagBuffer.err_begin(), E = diagBuffer.err_end(); I != E; ++I) 110 llvm::errs() << I->second << '\n'; 111 } 112 return remap.take(); 113 } 114 115 return remap.take(); 116 } 117 118 unsigned clang_remap_getNumFiles(CXRemapping map) { 119 return static_cast<Remap *>(map)->Vec.size(); 120 121 } 122 123 void clang_remap_getFilenames(CXRemapping map, unsigned index, 124 CXString *original, CXString *transformed) { 125 if (original) 126 *original = cxstring::createCXString( 127 static_cast<Remap *>(map)->Vec[index].first, 128 /*DupString =*/ true); 129 if (transformed) 130 *transformed = cxstring::createCXString( 131 static_cast<Remap *>(map)->Vec[index].second, 132 /*DupString =*/ true); 133 } 134 135 void clang_remap_dispose(CXRemapping map) { 136 delete static_cast<Remap *>(map); 137 } 138 139 } // end: extern "C" 140