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tjp/core/containers/ByPtrId.hpp

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+// License: Modified MIT (NON-AI)
+// See the LICENSE file in the root directory for license information.
+// Copyright 2025 Timothy Prepscius
+ 
+#pragma once
+ 
+#include <tjp/core/ptr/Ptr.hpp>
+#include <tjp/core/assert/debug_assert.h>
+ 
+namespace tjp::core {
+
+template<typename T>
+struct ByPtrId {
+	typedef bool is_transparent;
+
+	bool operator() (const T *lhs, const T *rhs) const
+	{
+		debug_assert(lhs);
+		debug_assert(rhs);
+		return lhs->id < rhs->id;
+	}
+
+	template<typename R>
+	bool operator() (const T *lhs, const R &rhs) const
+	{
+		debug_assert(lhs);
+		debug_assert(rhs);
+		
+		return lhs->id < rhs;
+	}
+
+	template<typename R>
+	bool operator() (const R &lhs, const T *rhs) const
+	{
+		debug_assert(lhs);
+		debug_assert(rhs);
+
+		return lhs < rhs->id;
+	}
+} ;
+
+}