Eric Liu | 826b783 | 2017-10-26 10:38:14 +0000 | [diff] [blame^] | 1 | //===- lib/Tooling/Execution.cpp - Standalone clang action execution. -----===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "clang/Tooling/StandaloneExecution.h" |
| 11 | #include "clang/Tooling/ToolExecutorPluginRegistry.h" |
| 12 | |
| 13 | namespace clang { |
| 14 | namespace tooling { |
| 15 | |
| 16 | static llvm::Error make_string_error(const llvm::Twine &Message) { |
| 17 | return llvm::make_error<llvm::StringError>(Message, |
| 18 | llvm::inconvertibleErrorCode()); |
| 19 | } |
| 20 | |
| 21 | const char *StandaloneToolExecutor::ExecutorName = "StandaloneToolExecutor"; |
| 22 | |
| 23 | static ArgumentsAdjuster getDefaultArgumentsAdjusters() { |
| 24 | return combineAdjusters( |
| 25 | getClangStripOutputAdjuster(), |
| 26 | combineAdjusters(getClangSyntaxOnlyAdjuster(), |
| 27 | getClangStripDependencyFileAdjuster())); |
| 28 | } |
| 29 | |
| 30 | StandaloneToolExecutor::StandaloneToolExecutor( |
| 31 | const CompilationDatabase &Compilations, |
| 32 | llvm::ArrayRef<std::string> SourcePaths, |
| 33 | std::shared_ptr<PCHContainerOperations> PCHContainerOps) |
| 34 | : Tool(Compilations, SourcePaths), Context(&Results), |
| 35 | ArgsAdjuster(getDefaultArgumentsAdjusters()) { |
| 36 | // Use self-defined default argument adjusters instead of the default |
| 37 | // adjusters that come with the old `ClangTool`. |
| 38 | Tool.clearArgumentsAdjusters(); |
| 39 | } |
| 40 | |
| 41 | StandaloneToolExecutor::StandaloneToolExecutor( |
| 42 | CommonOptionsParser Options, |
| 43 | std::shared_ptr<PCHContainerOperations> PCHContainerOps) |
| 44 | : OptionsParser(std::move(Options)), |
| 45 | Tool(OptionsParser->getCompilations(), OptionsParser->getSourcePathList(), |
| 46 | PCHContainerOps), |
| 47 | Context(&Results), ArgsAdjuster(getDefaultArgumentsAdjusters()) { |
| 48 | Tool.clearArgumentsAdjusters(); |
| 49 | } |
| 50 | |
| 51 | llvm::Error StandaloneToolExecutor::execute( |
| 52 | llvm::ArrayRef< |
| 53 | std::pair<std::unique_ptr<FrontendActionFactory>, ArgumentsAdjuster>> |
| 54 | Actions) { |
| 55 | if (Actions.empty()) |
| 56 | return make_string_error("No action to execute."); |
| 57 | |
| 58 | if (Actions.size() != 1) |
| 59 | return make_string_error( |
| 60 | "Only support executing exactly 1 action at this point."); |
| 61 | |
| 62 | auto &Action = Actions.front(); |
| 63 | Tool.appendArgumentsAdjuster(Action.second); |
| 64 | Tool.appendArgumentsAdjuster(ArgsAdjuster); |
| 65 | if (int Ret = Tool.run(Action.first.get())) |
| 66 | return make_string_error("Failed to run action."); |
| 67 | |
| 68 | return llvm::Error::success(); |
| 69 | } |
| 70 | |
| 71 | class StandaloneToolExecutorPlugin : public ToolExecutorPlugin { |
| 72 | public: |
| 73 | llvm::Expected<std::unique_ptr<ToolExecutor>> |
| 74 | create(CommonOptionsParser &OptionsParser) override { |
| 75 | if (OptionsParser.getSourcePathList().empty()) |
| 76 | return make_string_error( |
| 77 | "[StandaloneToolExecutorPlugin] No positional argument found."); |
| 78 | return llvm::make_unique<StandaloneToolExecutor>(std::move(OptionsParser)); |
| 79 | } |
| 80 | }; |
| 81 | |
| 82 | // This anchor is used to force the linker to link in the generated object file |
| 83 | // and thus register the plugin. |
| 84 | volatile int ToolExecutorPluginAnchorSource = 0; |
| 85 | |
| 86 | static ToolExecutorPluginRegistry::Add<StandaloneToolExecutorPlugin> |
| 87 | X("standalone", "Runs FrontendActions on a set of files provided " |
| 88 | "via positional arguments."); |
| 89 | |
| 90 | } // end namespace tooling |
| 91 | } // end namespace clang |