//== Yaml.h ---------------------------------------------------- -*- 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 // //===----------------------------------------------------------------------===// // // This file defines convenience functions for handling YAML configuration files // for checkers/packages. // //===----------------------------------------------------------------------===// #ifndef LLVM_CLANG_LIB_STATICANALYZER_CHECKER_YAML_H #define LLVM_CLANG_LIB_STATICANALYZER_CHECKER_YAML_H #include "clang/StaticAnalyzer/Core/CheckerManager.h" #include "llvm/Support/VirtualFileSystem.h" #include "llvm/Support/YAMLTraits.h" namespace clang { namespace ento { /// Read the given file from the filesystem and parse it as a yaml file. The /// template parameter must have a yaml MappingTraits. /// Emit diagnostic error in case of any failure. template <class T, class Checker> llvm::Optional<T> getConfiguration(CheckerManager &Mgr, Checker *Chk, StringRef Option, StringRef ConfigFile) { if (ConfigFile.trim().empty()) return None; llvm::vfs::FileSystem *FS = llvm::vfs::getRealFileSystem().get(); llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = FS->getBufferForFile(ConfigFile.str()); if (std::error_code ec = Buffer.getError()) { Mgr.reportInvalidCheckerOptionValue(Chk, Option, "a valid filename instead of '" + std::string(ConfigFile) + "'"); return None; } llvm::yaml::Input Input(Buffer.get()->getBuffer()); T Config; Input >> Config; if (std::error_code ec = Input.error()) { Mgr.reportInvalidCheckerOptionValue(Chk, Option, "a valid yaml file: " + ec.message()); return None; } return Config; } } // namespace ento } // namespace clang #endif // LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MOVE_H |