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//===-- ClangMove.cpp - move definition to new file -------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "Move.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/Tooling/ArgumentsAdjusters.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Refactoring.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/YAMLTraits.h"
#include <set>
#include <string>
using namespace clang;
using namespace llvm;
namespace {
std::error_code CreateNewFile(const llvm::Twine &path) {
int fd = 0;
if (std::error_code ec = llvm::sys::fs::openFileForWrite(
path, fd, llvm::sys::fs::CD_CreateAlways,
llvm::sys::fs::OF_TextWithCRLF))
return ec;
return llvm::sys::Process::SafelyCloseFileDescriptor(fd);
}
cl::OptionCategory ClangMoveCategory("clang-move options");
cl::list<std::string> Names("names", cl::CommaSeparated,
cl::desc("The list of the names of classes being "
"moved, e.g. \"Foo,a::Foo,b::Foo\"."),
cl::cat(ClangMoveCategory));
cl::opt<std::string>
OldHeader("old_header",
cl::desc("The relative/absolute file path of old header."),
cl::cat(ClangMoveCategory));
cl::opt<std::string>
OldCC("old_cc", cl::desc("The relative/absolute file path of old cc."),
cl::cat(ClangMoveCategory));
cl::opt<std::string>
NewHeader("new_header",
cl::desc("The relative/absolute file path of new header."),
cl::cat(ClangMoveCategory));
cl::opt<std::string>
NewCC("new_cc", cl::desc("The relative/absolute file path of new cc."),
cl::cat(ClangMoveCategory));
cl::opt<bool>
OldDependOnNew("old_depend_on_new",
cl::desc("Whether old header will depend on new header. If "
"true, clang-move will "
"add #include of new header to old header."),
cl::init(false), cl::cat(ClangMoveCategory));
cl::opt<bool>
NewDependOnOld("new_depend_on_old",
cl::desc("Whether new header will depend on old header. If "
"true, clang-move will "
"add #include of old header to new header."),
cl::init(false), cl::cat(ClangMoveCategory));
cl::opt<std::string>
Style("style",
cl::desc("The style name used for reformatting. Default is \"llvm\""),
cl::init("llvm"), cl::cat(ClangMoveCategory));
cl::opt<bool> Dump("dump_result",
cl::desc("Dump results in JSON format to stdout."),
cl::cat(ClangMoveCategory));
cl::opt<bool> DumpDecls(
"dump_decls",
cl::desc("Dump all declarations in old header (JSON format) to stdout. If "
"the option is specified, other command options will be ignored. "
"An empty JSON will be returned if old header isn't specified."),
cl::cat(ClangMoveCategory));
} // namespace
int main(int argc, const char **argv) {
llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
auto ExpectedParser =
tooling::CommonOptionsParser::create(argc, argv, ClangMoveCategory);
if (!ExpectedParser) {
llvm::errs() << ExpectedParser.takeError();
return 1;
}
tooling::CommonOptionsParser &OptionsParser = ExpectedParser.get();
if (OldDependOnNew && NewDependOnOld) {
llvm::errs() << "Provide either --old_depend_on_new or "
"--new_depend_on_old. clang-move doesn't support these two "
"options at same time (It will introduce include cycle).\n";
return 1;
}
tooling::RefactoringTool Tool(OptionsParser.getCompilations(),
OptionsParser.getSourcePathList());
// Add "-fparse-all-comments" compile option to make clang parse all comments.
Tool.appendArgumentsAdjuster(tooling::getInsertArgumentAdjuster(
"-fparse-all-comments", tooling::ArgumentInsertPosition::BEGIN));
move::MoveDefinitionSpec Spec;
Spec.Names = {Names.begin(), Names.end()};
Spec.OldHeader = OldHeader;
Spec.NewHeader = NewHeader;
Spec.OldCC = OldCC;
Spec.NewCC = NewCC;
Spec.OldDependOnNew = OldDependOnNew;
Spec.NewDependOnOld = NewDependOnOld;
llvm::SmallString<128> InitialDirectory;
if (std::error_code EC = llvm::sys::fs::current_path(InitialDirectory))
llvm::report_fatal_error("Cannot detect current path: " +
Twine(EC.message()));
move::ClangMoveContext Context{Spec, Tool.getReplacements(),
std::string(InitialDirectory.str()), Style,
DumpDecls};
move::DeclarationReporter Reporter;
move::ClangMoveActionFactory Factory(&Context, &Reporter);
int CodeStatus = Tool.run(&Factory);
if (CodeStatus)
return CodeStatus;
if (DumpDecls) {
llvm::outs() << "[\n";
const auto &Declarations = Reporter.getDeclarationList();
for (auto I = Declarations.begin(), E = Declarations.end(); I != E; ++I) {
llvm::outs() << " {\n";
llvm::outs() << " \"DeclarationName\": \"" << I->QualifiedName
<< "\",\n";
llvm::outs() << " \"DeclarationType\": \"" << I->Kind << "\",\n";
llvm::outs() << " \"Templated\": " << (I->Templated ? "true" : "false")
<< "\n";
llvm::outs() << " }";
// Don't print trailing "," at the end of last element.
if (I != std::prev(E))
llvm::outs() << ",\n";
}
llvm::outs() << "\n]\n";
return 0;
}
if (!NewCC.empty()) {
std::error_code EC = CreateNewFile(NewCC);
if (EC) {
llvm::errs() << "Failed to create " << NewCC << ": " << EC.message()
<< "\n";
return EC.value();
}
}
if (!NewHeader.empty()) {
std::error_code EC = CreateNewFile(NewHeader);
if (EC) {
llvm::errs() << "Failed to create " << NewHeader << ": " << EC.message()
<< "\n";
return EC.value();
}
}
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts(new DiagnosticOptions());
clang::TextDiagnosticPrinter DiagnosticPrinter(errs(), &*DiagOpts);
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), &*DiagOpts,
&DiagnosticPrinter, false);
auto &FileMgr = Tool.getFiles();
SourceManager SM(Diagnostics, FileMgr);
Rewriter Rewrite(SM, LangOptions());
if (!formatAndApplyAllReplacements(Tool.getReplacements(), Rewrite, Style)) {
llvm::errs() << "Failed applying all replacements.\n";
return 1;
}
if (Dump) {
std::set<llvm::StringRef> Files;
for (const auto &it : Tool.getReplacements())
Files.insert(it.first);
auto WriteToJson = [&](llvm::raw_ostream &OS) {
OS << "[\n";
for (auto I = Files.begin(), E = Files.end(); I != E; ++I) {
OS << " {\n";
OS << " \"FilePath\": \"" << *I << "\",\n";
const auto Entry = FileMgr.getFile(*I);
auto ID = SM.translateFile(*Entry);
std::string Content;
llvm::raw_string_ostream ContentStream(Content);
Rewrite.getEditBuffer(ID).write(ContentStream);
OS << " \"SourceText\": \""
<< llvm::yaml::escape(ContentStream.str()) << "\"\n";
OS << " }";
if (I != std::prev(E))
OS << ",\n";
}
OS << "\n]\n";
};
WriteToJson(llvm::outs());
return 0;
}
return Rewrite.overwriteChangedFiles();
}
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