unique_node.h | Explore in Territory

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#ifndef SRC_TINT_LANG_CORE_TYPE_UNIQUE_NODE_H_
#define SRC_TINT_LANG_CORE_TYPE_UNIQUE_NODE_H_

#include <functional>

#include "src/tint/lang/core/type/node.h"

namespace tint::core::type {

/// UniqueNode is the base class for objects that are de-duplicated by the Manager.
/// Deduplication is achieved by comparing a temporary object to the set of existing objects, using
/// Hash() and Equals(). If an existing object is found, then the pointer to that object is
/// returned, otherwise a new object is constructed, added to the Manager's set and returned.
class UniqueNode : public Castable<UniqueNode, Node> { … };

}  // namespace tint::core::type

namespace std {

/// std::hash specialization for tint::core::type::UniqueNode
template <>
struct hash<tint::core::type::UniqueNode> { … };

/// std::equal_to specialization for tint::core::type::UniqueNode
template <>
struct equal_to<tint::core::type::UniqueNode> { … };

}  // namespace std

#endif  // SRC_TINT_LANG_CORE_TYPE_UNIQUE_NODE_H_
chromium/third_party/dawn/src/tint/lang/core/type/unique_node.h
