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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef frontend_TypedIndex_h
#define frontend_TypedIndex_h
#include <cstdint>
#include <stddef.h>
namespace js {
namespace frontend {
// TypedIndex allows discrimination in variants between different
// index types. Used as a typesafe index for various stencil arrays.
template <typename Tag>
struct TypedIndex {
TypedIndex() = default;
constexpr explicit TypedIndex(uint32_t index) : index(index){};
uint32_t index = 0;
// For Vector::operator[]
operator size_t() const { return index; }
TypedIndex& operator=(size_t idx) {
index = idx;
return *this;
}
bool operator<(TypedIndex other) const { return index < other.index; }
bool operator<=(TypedIndex other) const { return index <= other.index; }
bool operator>(TypedIndex other) const { return index > other.index; }
bool operator>=(TypedIndex other) const { return index >= other.index; }
};
} // namespace frontend
} // namespace js
#endif
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