forked from OSchip/llvm-project
88 lines
3.4 KiB
C++
88 lines
3.4 KiB
C++
//===- ClangTidyPlugin.cpp - clang-tidy as a clang plugin -----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "../ClangTidy.h"
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#include "../ClangTidyDiagnosticConsumer.h"
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#include "../ClangTidyForceLinker.h"
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#include "../ClangTidyModule.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendPluginRegistry.h"
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#include "clang/Frontend/MultiplexConsumer.h"
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namespace clang {
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namespace tidy {
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/// The core clang tidy plugin action. This just provides the AST consumer and
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/// command line flag parsing for using clang-tidy as a clang plugin.
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class ClangTidyPluginAction : public PluginASTAction {
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/// Wrapper to grant the context and diagnostics engine the same lifetime as
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/// the action.
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/// We use MultiplexConsumer to avoid writing out all the forwarding methods.
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class WrapConsumer : public MultiplexConsumer {
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std::unique_ptr<ClangTidyContext> Context;
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std::unique_ptr<DiagnosticsEngine> DiagEngine;
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public:
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WrapConsumer(std::unique_ptr<ClangTidyContext> Context,
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std::unique_ptr<DiagnosticsEngine> DiagEngine,
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std::vector<std::unique_ptr<ASTConsumer>> Consumer)
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: MultiplexConsumer(std::move(Consumer)), Context(std::move(Context)),
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DiagEngine(std::move(DiagEngine)) {}
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};
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public:
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std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &Compiler,
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StringRef File) override {
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// Create and set diagnostics engine
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auto ExternalDiagEngine = &Compiler.getDiagnostics();
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auto DiagConsumer =
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new ClangTidyDiagnosticConsumer(*Context, ExternalDiagEngine);
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auto DiagEngine = std::make_unique<DiagnosticsEngine>(
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new DiagnosticIDs, new DiagnosticOptions, DiagConsumer);
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Context->setDiagnosticsEngine(DiagEngine.get());
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// Create the AST consumer.
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ClangTidyASTConsumerFactory Factory(*Context);
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std::vector<std::unique_ptr<ASTConsumer>> Vec;
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Vec.push_back(Factory.CreateASTConsumer(Compiler, File));
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return std::make_unique<WrapConsumer>(
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std::move(Context), std::move(DiagEngine), std::move(Vec));
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}
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bool ParseArgs(const CompilerInstance &,
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const std::vector<std::string> &Args) override {
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ClangTidyGlobalOptions GlobalOptions;
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ClangTidyOptions DefaultOptions;
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ClangTidyOptions OverrideOptions;
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// Parse the extra command line args.
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// FIXME: This is very limited at the moment.
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for (StringRef Arg : Args)
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if (Arg.startswith("-checks="))
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OverrideOptions.Checks = Arg.substr(strlen("-checks="));
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auto Options = std::make_unique<FileOptionsProvider>(
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GlobalOptions, DefaultOptions, OverrideOptions);
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Context = std::make_unique<ClangTidyContext>(std::move(Options));
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return true;
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}
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private:
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std::unique_ptr<ClangTidyContext> Context;
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};
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} // namespace tidy
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} // namespace clang
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// This anchor is used to force the linker to link in the generated object file
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// and thus register the clang-tidy plugin.
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volatile int ClangTidyPluginAnchorSource = 0;
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static clang::FrontendPluginRegistry::Add<clang::tidy::ClangTidyPluginAction>
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X("clang-tidy", "clang-tidy");
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