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// Copyright 2018 The Amber Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_AMBERSCRIPT_PARSER_H_
#define SRC_AMBERSCRIPT_PARSER_H_
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "amber/result.h"
#include "src/parser.h"
#include "src/script.h"
namespace amber {
class Tokenizer;
namespace amberscript {
/// Parser for the `AmberScript` format.
class Parser : public amber::Parser {
public:
Parser();
~Parser() override;
// amber::Parser
Result Parse(const std::string& data) override;
private:
std::string make_error(const std::string& err);
Result ToShaderType(const std::string& str, ShaderType* type);
Result ToBufferType(const std::string& str, BufferType* type);
Result ToShaderFormat(const std::string& str, ShaderFormat* fmt);
Result ToPipelineType(const std::string& str, PipelineType* type);
Result ValidateEndOfStatement(const std::string& name);
Result ParseStruct();
Result ParseBuffer();
Result ParseBufferInitializer(Buffer*);
Result ParseBufferInitializerSize(Buffer*);
Result ParseBufferInitializerFill(Buffer*, uint32_t);
Result ParseBufferInitializerSeries(Buffer*, uint32_t);
Result ParseBufferInitializerData(Buffer*);
Result ParseShaderBlock();
Result ParsePipelineBlock();
Result ParsePipelineAttach(Pipeline*);
Result ParsePipelineShaderOptimizations(Pipeline*);
Result ParsePipelineShaderCompileOptions(Pipeline*);
Result ParsePipelineFramebufferSize(Pipeline*);
Result ParsePipelineBind(Pipeline*);
Result ParsePipelineVertexData(Pipeline*);
Result ParsePipelineIndexData(Pipeline*);
Result ParsePipelineSet(Pipeline*);
Result ParseRun();
Result ParseClear();
Result ParseClearColor();
Result ParseExpect();
Result ParseCopy();
Result ParseDeviceFeature();
Result ParseDeviceExtension();
Result ParseInstanceExtension();
Result ParseRepeat();
Result ParseSet();
bool IsRepeatable(const std::string& name) const;
Result ParseRepeatableCommand(const std::string& name);
Result ParseDerivePipelineBlock();
Result ParsePipelineBody(const std::string& cmd_name,
std::unique_ptr<Pipeline> pipeline);
Result ParseShaderSpecialization(Pipeline* pipeline);
/// Parses a set of values out of the token stream. |name| is the name of the
/// current command we're parsing for error purposes. The |type| is the type
/// of data we expect for the current buffer. |values| will be appended to
/// with the parsed values.
Result ParseValues(const std::string& name,
Format* fmt,
std::vector<Value>* values);
std::unique_ptr<Tokenizer> tokenizer_;
std::vector<std::unique_ptr<Command>> command_list_;
};
} // namespace amberscript
} // namespace amber
#endif // SRC_AMBERSCRIPT_PARSER_H_
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