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-rwxr-xr-xlib/StaticAnalyzer/Checkers/Yaml.h59
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diff --git a/lib/StaticAnalyzer/Checkers/Yaml.h b/lib/StaticAnalyzer/Checkers/Yaml.h
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+//== 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/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