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// Copyright 2020 The Tint 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_TINT_LANG_SPIRV_WRITER_COMMON_INSTRUCTION_H_
#define SRC_TINT_LANG_SPIRV_WRITER_COMMON_INSTRUCTION_H_
#include <vector>
#include "spirv/unified1/spirv.hpp11"
#include "src/tint/lang/spirv/writer/common/operand.h"
namespace tint::spirv::writer {
/// A single SPIR-V instruction
class Instruction {
public:
/// Constructor
/// @param op the op to generate
/// @param operands the operand values for the instruction
Instruction(spv::Op op, OperandList operands);
/// Copy Constructor
Instruction(const Instruction&);
/// Copy assignment operator
/// @param other the instruction to copy
/// @returns the new Instruction
Instruction& operator=(const Instruction& other);
/// Destructor
~Instruction();
/// @returns the instructions op
spv::Op opcode() const { return op_; }
/// @returns the instructions operands
const OperandList& operands() const { return operands_; }
/// @returns the number of uint32_t's needed to hold the instruction
uint32_t word_length() const;
private:
spv::Op op_ = spv::Op::OpNop;
OperandList operands_;
};
/// A list of instructions
using InstructionList = std::vector<Instruction>;
} // namespace tint::spirv::writer
#endif // SRC_TINT_LANG_SPIRV_WRITER_COMMON_INSTRUCTION_H_