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//===- lib/Tooling/Execution.cpp - Standalone clang action execution. -----===//
//
// 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 "clang/Tooling/StandaloneExecution.h"
#include "clang/Tooling/ToolExecutorPluginRegistry.h"
namespace clang {
namespace tooling {
static llvm::Error make_string_error(const llvm::Twine &Message) {
return llvm::make_error<llvm::StringError>(Message,
llvm::inconvertibleErrorCode());
}
const char *StandaloneToolExecutor::ExecutorName = "StandaloneToolExecutor";
static ArgumentsAdjuster getDefaultArgumentsAdjusters() {
return combineAdjusters(
getClangStripOutputAdjuster(),
combineAdjusters(getClangSyntaxOnlyAdjuster(),
getClangStripDependencyFileAdjuster()));
}
StandaloneToolExecutor::StandaloneToolExecutor(
const CompilationDatabase &Compilations,
llvm::ArrayRef<std::string> SourcePaths,
IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS,
std::shared_ptr<PCHContainerOperations> PCHContainerOps)
: Tool(Compilations, SourcePaths, std::move(PCHContainerOps),
std::move(BaseFS)),
Context(&Results), ArgsAdjuster(getDefaultArgumentsAdjusters()) {
// Use self-defined default argument adjusters instead of the default
// adjusters that come with the old `ClangTool`.
Tool.clearArgumentsAdjusters();
}
StandaloneToolExecutor::StandaloneToolExecutor(
CommonOptionsParser Options,
std::shared_ptr<PCHContainerOperations> PCHContainerOps)
: OptionsParser(std::move(Options)),
Tool(OptionsParser->getCompilations(), OptionsParser->getSourcePathList(),
std::move(PCHContainerOps)),
Context(&Results), ArgsAdjuster(getDefaultArgumentsAdjusters()) {
Tool.clearArgumentsAdjusters();
}
llvm::Error StandaloneToolExecutor::execute(
llvm::ArrayRef<
std::pair<std::unique_ptr<FrontendActionFactory>, ArgumentsAdjuster>>
Actions) {
if (Actions.empty())
return make_string_error("No action to execute.");
if (Actions.size() != 1)
return make_string_error(
"Only support executing exactly 1 action at this point.");
auto &Action = Actions.front();
Tool.appendArgumentsAdjuster(Action.second);
Tool.appendArgumentsAdjuster(ArgsAdjuster);
if (Tool.run(Action.first.get()))
return make_string_error("Failed to run action.");
return llvm::Error::success();
}
class StandaloneToolExecutorPlugin : public ToolExecutorPlugin {
public:
llvm::Expected<std::unique_ptr<ToolExecutor>>
create(CommonOptionsParser &OptionsParser) override {
if (OptionsParser.getSourcePathList().empty())
return make_string_error(
"[StandaloneToolExecutorPlugin] No positional argument found.");
return std::make_unique<StandaloneToolExecutor>(std::move(OptionsParser));
}
};
static ToolExecutorPluginRegistry::Add<StandaloneToolExecutorPlugin>
X("standalone", "Runs FrontendActions on a set of files provided "
"via positional arguments.");
// This anchor is used to force the linker to link in the generated object file
// and thus register the plugin.
volatile int StandaloneToolExecutorAnchorSource = 0;
} // end namespace tooling
} // end namespace clang
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