1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
//===-- ClangApplyReplacementsMain.cpp - Main file for the tool -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file provides the main function for the
/// clang-apply-replacements tool.
///
//===----------------------------------------------------------------------===//
#include "clang-apply-replacements/Tooling/ApplyReplacements.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Version.h"
#include "clang/Format/Format.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
using namespace clang;
using namespace clang::replace;
static cl::opt<std::string> Directory(cl::Positional, cl::Required,
cl::desc("<Search Root Directory>"));
static cl::OptionCategory ReplacementCategory("Replacement Options");
static cl::OptionCategory FormattingCategory("Formatting Options");
const cl::OptionCategory *VisibleCategories[] = {&ReplacementCategory,
&FormattingCategory};
static cl::opt<bool> RemoveTUReplacementFiles(
"remove-change-desc-files",
cl::desc("Remove the change description files regardless of successful\n"
"merging/replacing."),
cl::init(false), cl::cat(ReplacementCategory));
static cl::opt<bool> DoFormat(
"format",
cl::desc("Enable formatting of code changed by applying replacements.\n"
"Use -style to choose formatting style.\n"),
cl::cat(FormattingCategory));
// FIXME: Consider making the default behaviour for finding a style
// configuration file to start the search anew for every file being changed to
// handle situations where the style is different for different parts of a
// project.
static cl::opt<std::string> FormatStyleConfig(
"style-config",
cl::desc("Path to a directory containing a .clang-format file\n"
"describing a formatting style to use for formatting\n"
"code when -style=file.\n"),
cl::init(""), cl::cat(FormattingCategory));
static cl::opt<std::string>
FormatStyleOpt("style", cl::desc(format::StyleOptionHelpDescription),
cl::init("LLVM"), cl::cat(FormattingCategory));
namespace {
// Helper object to remove the TUReplacement and TUDiagnostic (triggered by
// "remove-change-desc-files" command line option) when exiting current scope.
class ScopedFileRemover {
public:
ScopedFileRemover(const TUReplacementFiles &Files,
clang::DiagnosticsEngine &Diagnostics)
: TURFiles(Files), Diag(Diagnostics) {}
~ScopedFileRemover() { deleteReplacementFiles(TURFiles, Diag); }
private:
const TUReplacementFiles &TURFiles;
clang::DiagnosticsEngine &Diag;
};
} // namespace
static void printVersion(raw_ostream &OS) {
OS << "clang-apply-replacements version " CLANG_VERSION_STRING << "\n";
}
int main(int argc, char **argv) {
cl::HideUnrelatedOptions(makeArrayRef(VisibleCategories));
cl::SetVersionPrinter(printVersion);
cl::ParseCommandLineOptions(argc, argv);
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts(new DiagnosticOptions());
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), DiagOpts.get());
// Determine a formatting style from options.
auto FormatStyleOrError = format::getStyle(FormatStyleOpt, FormatStyleConfig,
format::DefaultFallbackStyle);
if (!FormatStyleOrError) {
llvm::errs() << llvm::toString(FormatStyleOrError.takeError()) << "\n";
return 1;
}
format::FormatStyle FormatStyle = std::move(*FormatStyleOrError);
TUReplacements TURs;
TUReplacementFiles TUFiles;
std::error_code ErrorCode =
collectReplacementsFromDirectory(Directory, TURs, TUFiles, Diagnostics);
TUDiagnostics TUDs;
TUFiles.clear();
ErrorCode =
collectReplacementsFromDirectory(Directory, TUDs, TUFiles, Diagnostics);
if (ErrorCode) {
errs() << "Trouble iterating over directory '" << Directory
<< "': " << ErrorCode.message() << "\n";
return 1;
}
// Remove the TUReplacementFiles (triggered by "remove-change-desc-files"
// command line option) when exiting main().
std::unique_ptr<ScopedFileRemover> Remover;
if (RemoveTUReplacementFiles)
Remover.reset(new ScopedFileRemover(TUFiles, Diagnostics));
FileManager Files((FileSystemOptions()));
SourceManager SM(Diagnostics, Files);
FileToChangesMap Changes;
if (!mergeAndDeduplicate(TURs, TUDs, Changes, SM))
return 1;
tooling::ApplyChangesSpec Spec;
Spec.Cleanup = true;
Spec.Style = FormatStyle;
Spec.Format = DoFormat ? tooling::ApplyChangesSpec::kAll
: tooling::ApplyChangesSpec::kNone;
for (const auto &FileChange : Changes) {
const FileEntry *Entry = FileChange.first;
StringRef FileName = Entry->getName();
llvm::Expected<std::string> NewFileData =
applyChanges(FileName, FileChange.second, Spec, Diagnostics);
if (!NewFileData) {
errs() << llvm::toString(NewFileData.takeError()) << "\n";
continue;
}
// Write new file to disk
std::error_code EC;
llvm::raw_fd_ostream FileStream(FileName, EC, llvm::sys::fs::OF_None);
if (EC) {
llvm::errs() << "Could not open " << FileName << " for writing\n";
continue;
}
FileStream << *NewFileData;
}
return 0;
}
|
