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c7ec133d42
This helps with testing and debugging for paths that are assumed absolute. It also uses a FileError to provide the file path it's trying to open. llvm-svn: 375008
121 lines
4.1 KiB
C++
121 lines
4.1 KiB
C++
//===-- YAMLRemarkParser.h - Parser for YAML remarks ------------*- C++/-*-===//
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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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//
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// This file provides the impementation of the YAML remark parser.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_REMARKS_YAML_REMARK_PARSER_H
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#define LLVM_REMARKS_YAML_REMARK_PARSER_H
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Remarks/Remark.h"
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#include "llvm/Remarks/RemarkParser.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/YAMLParser.h"
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/Support/raw_ostream.h"
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#include <string>
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namespace llvm {
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namespace remarks {
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class YAMLParseError : public ErrorInfo<YAMLParseError> {
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public:
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static char ID;
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YAMLParseError(StringRef Message, SourceMgr &SM, yaml::Stream &Stream,
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yaml::Node &Node);
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YAMLParseError(StringRef Message) : Message(Message) {}
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void log(raw_ostream &OS) const override { OS << Message; }
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std::error_code convertToErrorCode() const override {
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return inconvertibleErrorCode();
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}
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private:
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std::string Message;
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};
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/// Regular YAML to Remark parser.
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struct YAMLRemarkParser : public RemarkParser {
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/// The string table used for parsing strings.
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Optional<ParsedStringTable> StrTab;
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/// Last error message that can come from the YAML parser diagnostics.
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/// We need this for catching errors in the constructor.
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std::string LastErrorMessage;
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/// Source manager for better error messages.
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SourceMgr SM;
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/// Stream for yaml parsing.
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yaml::Stream Stream;
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/// Iterator in the YAML stream.
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yaml::document_iterator YAMLIt;
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/// If we parse remark metadata in separate mode, we need to open a new file
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/// and parse that.
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std::unique_ptr<MemoryBuffer> SeparateBuf;
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YAMLRemarkParser(StringRef Buf);
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Expected<std::unique_ptr<Remark>> next() override;
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static bool classof(const RemarkParser *P) {
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return P->ParserFormat == Format::YAML;
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}
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protected:
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YAMLRemarkParser(StringRef Buf, Optional<ParsedStringTable> StrTab);
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/// Create a YAMLParseError error from an existing error generated by the YAML
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/// parser.
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/// If there is no error, this returns Success.
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Error error();
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/// Create a YAMLParseError error referencing a specific node.
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Error error(StringRef Message, yaml::Node &Node);
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/// Parse a YAML remark to a remarks::Remark object.
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Expected<std::unique_ptr<Remark>> parseRemark(yaml::Document &Remark);
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/// Parse the type of a remark to an enum type.
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Expected<Type> parseType(yaml::MappingNode &Node);
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/// Parse one key to a string.
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Expected<StringRef> parseKey(yaml::KeyValueNode &Node);
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/// Parse one value to a string.
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virtual Expected<StringRef> parseStr(yaml::KeyValueNode &Node);
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/// Parse one value to an unsigned.
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Expected<unsigned> parseUnsigned(yaml::KeyValueNode &Node);
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/// Parse a debug location.
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Expected<RemarkLocation> parseDebugLoc(yaml::KeyValueNode &Node);
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/// Parse an argument.
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Expected<Argument> parseArg(yaml::Node &Node);
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};
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/// YAML with a string table to Remark parser.
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struct YAMLStrTabRemarkParser : public YAMLRemarkParser {
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YAMLStrTabRemarkParser(StringRef Buf, ParsedStringTable StrTab)
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: YAMLRemarkParser(Buf, std::move(StrTab)) {}
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static bool classof(const RemarkParser *P) {
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return P->ParserFormat == Format::YAMLStrTab;
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}
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protected:
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/// Parse one value to a string.
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Expected<StringRef> parseStr(yaml::KeyValueNode &Node) override;
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};
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Expected<std::unique_ptr<YAMLRemarkParser>>
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createYAMLParserFromMeta(StringRef Buf,
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Optional<ParsedStringTable> StrTab = None,
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Optional<StringRef> ExternalFilePrependPath = None);
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} // end namespace remarks
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} // end namespace llvm
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#endif /* LLVM_REMARKS_YAML_REMARK_PARSER_H */
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