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// Copyright 2023 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_CORE_IR_SWIZZLE_H_
#define SRC_TINT_LANG_CORE_IR_SWIZZLE_H_
#include <string>
#include "src/tint/lang/core/ir/operand_instruction.h"
#include "src/tint/utils/rtti/castable.h"
namespace tint::core::ir {
/// A swizzle instruction in the IR.
class Swizzle final : public Castable<Swizzle, OperandInstruction<1, 1>> {
public:
/// The offset in Operands() for the object being swizzled
static constexpr size_t kObjectOperandOffset = 0;
/// Constructor
/// @param result the result value
/// @param object the object being swizzled
/// @param indices the indices to swizzle
Swizzle(InstructionResult* result, Value* object, VectorRef<uint32_t> indices);
~Swizzle() override;
/// @copydoc Instruction::Clone()
Swizzle* Clone(CloneContext& ctx) override;
/// @returns the object used for the access
Value* Object() { return operands_[kObjectOperandOffset]; }
/// @returns the swizzle indices
VectorRef<uint32_t> Indices() { return indices_; }
/// @returns the friendly name for the instruction
std::string FriendlyName() override { return "swizzle"; }
private:
Vector<uint32_t, 4> indices_;
};
} // namespace tint::core::ir
#endif // SRC_TINT_LANG_CORE_IR_SWIZZLE_H_