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// Copyright 2022 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_AST_NODE_ID_H_
#define SRC_TINT_AST_NODE_ID_H_
#include <stddef.h>
namespace tint::ast {
/// NodeID is a unique node identifier for a given Program.
/// NodeIDs are sequentially allocated, starting at 0.
struct NodeID {
/// Equality operator
/// @param other the other NodeID
/// @returns true if the NodeIDs are the same
bool operator==(NodeID other) const { return value == other.value; }
/// Less-than comparison operator
/// @param other the other NodeID
/// @returns true if the other comes before this node
bool operator<(NodeID other) const { return value < other.value; }
/// The numerical value for the node identifier
size_t value = 0;
};
} // namespace tint::ast
#endif // SRC_TINT_AST_NODE_ID_H_