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// Copyright 2023 The Dawn & Tint Authors
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#ifndef SRC_TINT_LANG_CORE_IR_SWIZZLE_H_
#define SRC_TINT_LANG_CORE_IR_SWIZZLE_H_
#include <string>
#include <utility>
#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 (no results, no operands)
Swizzle();
/// 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 Operand(kObjectOperandOffset); }
/// @returns the object used for the access
const Value* Object() const { return Operand(kObjectOperandOffset); }
/// @returns the swizzle indices
VectorRef<uint32_t> Indices() const { return indices_; }
/// @param indices the new swizzle indices
void SetIndices(VectorRef<uint32_t> indices) { indices_ = std::move(indices); }
/// @returns the friendly name for the instruction
std::string FriendlyName() const override { return "swizzle"; }
private:
Vector<uint32_t, 4> indices_;
};
} // namespace tint::core::ir
#endif // SRC_TINT_LANG_CORE_IR_SWIZZLE_H_