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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_ACCESS_H_
#define SRC_TINT_LANG_CORE_IR_ACCESS_H_
#include "src/tint/lang/core/ir/operand_instruction.h"
#include "src/tint/utils/rtti/castable.h"
namespace tint::ir {
/// An access instruction in the IR.
class Access : public utils::Castable<Access, OperandInstruction<3, 1>> {
public:
/// The offset in Operands() for the object being accessed
static constexpr size_t kObjectOperandOffset = 0;
/// The base offset in Operands() for the access indices
static constexpr size_t kIndicesOperandOffset = 1;
/// Constructor
/// @param result the result value
/// @param object the accessor object
/// @param indices the indices to access
Access(InstructionResult* result, Value* object, utils::VectorRef<Value*> indices);
~Access() override;
/// @returns the object used for the access
Value* Object() { return operands_[kObjectOperandOffset]; }
/// Adds the given index to the end of the access chain
/// @param idx the index to add
void AddIndex(Value* idx) { AddOperand(operands_.Length(), idx); }
/// @returns the accessor indices
utils::Slice<Value*> Indices() { return operands_.Slice().Offset(kIndicesOperandOffset); }
/// @returns the friendly name for the instruction
std::string_view FriendlyName() override { return "access"; }
};
} // namespace tint::ir
#endif // SRC_TINT_LANG_CORE_IR_ACCESS_H_