ARCMigrate.cpp revision 1e4c01b79273b9cd4e9e9ecfd3422df3900b8356 
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
21using namespace clang;
22using namespace arcmt;
23
24namespace {
25
26struct Remap {
27  std::vector<std::pair<std::string, std::string> > Vec;
28};
29
30} // anonymous namespace.
31
32//===----------------------------------------------------------------------===//
33// libClang public APIs.
34//===----------------------------------------------------------------------===//
35
36extern "C" {
37
38CXRemapping 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
77unsigned clang_remap_getNumFiles(CXRemapping map) {
78  return static_cast<Remap *>(map)->Vec.size();
79
80}
81
82void clang_remap_getFilenames(CXRemapping map, unsigned index,
83                              CXString *original, CXString *transformed) {
84  if (original)
85    *original = cxstring::createCXString(
86                                    static_cast<Remap *>(map)->Vec[index].first,
87                                        /*DupString =*/ true);
88  if (transformed)
89    *transformed = cxstring::createCXString(
90                                   static_cast<Remap *>(map)->Vec[index].second,
91                                  /*DupString =*/ true);
92}
93
94void clang_remap_dispose(CXRemapping map) {
95  delete static_cast<Remap *>(map);
96}
97
98} // end: extern "C"
99