//===-- YAMLRemarkSerializer.h - YAML Remark serialization ---*- 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 provides an interface for serializing remarks to YAML.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_REMARKS_YAML_REMARK_SERIALIZER_H
#define LLVM_REMARKS_YAML_REMARK_SERIALIZER_H

#include "llvm/Remarks/RemarkSerializer.h"
#include "llvm/Support/YAMLTraits.h"

namespace llvm {
namespace remarks {

/// Serialize the remarks to YAML. One remark entry looks like this:
/// --- !<TYPE>
/// Pass:            <PASSNAME>
/// Name:            <REMARKNAME>
/// DebugLoc:        { File: <SOURCEFILENAME>, Line: <SOURCELINE>,
///                    Column: <SOURCECOLUMN> }
/// Function:        <FUNCTIONNAME>
/// Args:
///   - <KEY>: <VALUE>
///     DebugLoc:        { File: <FILE>, Line: <LINE>, Column: <COL> }
/// ...
struct YAMLRemarkSerializer : public RemarkSerializer {
  /// The YAML streamer.
  yaml::Output YAMLOutput;

  YAMLRemarkSerializer(raw_ostream &OS, SerializerMode Mode);

  void emit(const Remark &Remark) override;
  std::unique_ptr<MetaSerializer>
  metaSerializer(raw_ostream &OS,
                 Optional<StringRef> ExternalFilename = None) override;

protected:
  bool DidEmitMeta = false;
};

struct YAMLMetaSerializer : public MetaSerializer {
  Optional<StringRef> ExternalFilename;

  YAMLMetaSerializer(raw_ostream &OS, Optional<StringRef> ExternalFilename)
      : MetaSerializer(OS), ExternalFilename(ExternalFilename) {}

  void emit() override;
};

/// Serialize the remarks to YAML using a string table. An remark entry looks
/// like the regular YAML remark but instead of string entries it's using
/// numbers that map to an index in the string table.
struct YAMLStrTabRemarkSerializer : public YAMLRemarkSerializer {
  YAMLStrTabRemarkSerializer(raw_ostream &OS, SerializerMode Mode)
      : YAMLRemarkSerializer(OS, Mode) {
    // Having a string table set up enables the serializer to use it.
    StrTab.emplace();
  }
  YAMLStrTabRemarkSerializer(raw_ostream &OS, SerializerMode Mode,
                             StringTable StrTabIn)
      : YAMLRemarkSerializer(OS, Mode) {
    StrTab = std::move(StrTabIn);
  }
  std::unique_ptr<MetaSerializer>
  metaSerializer(raw_ostream &OS,
                 Optional<StringRef> ExternalFilename = None) override;
};

struct YAMLStrTabMetaSerializer : public YAMLMetaSerializer {
  /// The string table is part of the metadata.
  StringTable StrTab;

  YAMLStrTabMetaSerializer(raw_ostream &OS,
                           Optional<StringRef> ExternalFilename,
                           StringTable StrTab)
      : YAMLMetaSerializer(OS, ExternalFilename), StrTab(std::move(StrTab)) {}

  void emit() override;
};

} // end namespace remarks
} // end namespace llvm

#endif /* LLVM_REMARKS_REMARK_SERIALIZER_H */