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//===-- ClangIncludeFixer.cpp - Standalone change namespace ---------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// This tool can be used to change the surrounding namespaces of class/function
// definitions.
//
// Example: test.cc
// namespace na {
// class X {};
// namespace nb {
// class Y { X x; };
// } // namespace nb
// } // namespace na
// To move the definition of class Y from namespace "na::nb" to "x::y", run:
// clang-change-namespace --old_namespace "na::nb" \
// --new_namespace "x::y" --file_pattern "test.cc" test.cc --
// Output:
// namespace na {
// class X {};
// } // namespace na
// namespace x {
// namespace y {
// class Y { na::X x; };
// } // namespace y
// } // namespace x
#include "ChangeNamespace.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Refactoring.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/Support/CommandLine.h"
using namespace clang;
using namespace llvm;
namespace {
cl::OptionCategory ChangeNamespaceCategory("Change namespace.");
cl::opt<std::string> OldNamespace("old_namespace", cl::Required,
cl::desc("Old namespace."),
cl::cat(ChangeNamespaceCategory));
cl::opt<std::string> NewNamespace("new_namespace", cl::Required,
cl::desc("New namespace."),
cl::cat(ChangeNamespaceCategory));
cl::opt<std::string> FilePattern(
"file_pattern", cl::Required,
cl::desc("Only rename namespaces in files that match the given pattern."),
cl::cat(ChangeNamespaceCategory));
cl::opt<bool> Inplace("i", cl::desc("Inplace edit <file>s, if specified."),
cl::cat(ChangeNamespaceCategory));
cl::opt<std::string> Style("style",
cl::desc("The style name used for reformatting."),
cl::init("LLVM"), cl::cat(ChangeNamespaceCategory));
} // anonymous namespace
int main(int argc, const char **argv) {
tooling::CommonOptionsParser OptionsParser(argc, argv,
ChangeNamespaceCategory);
const auto &Files = OptionsParser.getSourcePathList();
tooling::RefactoringTool Tool(OptionsParser.getCompilations(), Files);
change_namespace::ChangeNamespaceTool NamespaceTool(
OldNamespace, NewNamespace, FilePattern, &Tool.getReplacements());
ast_matchers::MatchFinder Finder;
NamespaceTool.registerMatchers(&Finder);
std::unique_ptr<tooling::FrontendActionFactory> Factory =
tooling::newFrontendActionFactory(&Finder);
if (int Result = Tool.run(Factory.get()))
return Result;
LangOptions DefaultLangOptions;
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
clang::TextDiagnosticPrinter DiagnosticPrinter(errs(), &*DiagOpts);
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), &*DiagOpts,
&DiagnosticPrinter, false);
auto &FileMgr = Tool.getFiles();
SourceManager Sources(Diagnostics, FileMgr);
Rewriter Rewrite(Sources, DefaultLangOptions);
if (!formatAndApplyAllReplacements(Tool.getReplacements(), Rewrite, Style)) {
llvm::errs() << "Failed applying all replacements.\n";
return 1;
}
if (Inplace)
return Rewrite.overwriteChangedFiles();
for (const auto &File : Files) {
const auto *Entry = FileMgr.getFile(File);
auto ID = Sources.getOrCreateFileID(Entry, SrcMgr::C_User);
// FIXME: print results in parsable format, e.g. JSON.
outs() << "============== " << File << " ==============\n";
Rewrite.getEditBuffer(ID).write(llvm::outs());
outs() << "\n============================================\n";
}
return 0;
}
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