initial commit, 4.5 stable

core/string/optimized_translation.h

@@ -0,0 +1,87 @@
+/**************************************************************************/
+/*  optimized_translation.h                                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "core/string/translation.h"
+
+class OptimizedTranslation : public Translation {
+	GDCLASS(OptimizedTranslation, Translation);
+
+	//this translation uses a sort of modified perfect hash algorithm
+	//it requires hashing strings twice and then does a binary search,
+	//so it's slower, but at the same time it has an extremely high chance
+	//of catching untranslated strings
+
+	//load/store friendly types
+	Vector<int> hash_table;
+	Vector<int> bucket_table;
+	Vector<uint8_t> strings;
+
+	struct Bucket {
+		int size;
+		uint32_t func;
+
+		struct Elem {
+			uint32_t key;
+			uint32_t str_offset;
+			uint32_t comp_size;
+			uint32_t uncomp_size;
+		};
+
+		Elem elem[1];
+	};
+
+	_FORCE_INLINE_ uint32_t hash(uint32_t d, const char *p_str) const {
+		if (d == 0) {
+			d = 0x1000193;
+		}
+		while (*p_str) {
+			d = (d * 0x1000193) ^ static_cast<uint8_t>(*p_str);
+			p_str++;
+		}
+
+		return d;
+	}
+
+protected:
+	bool _set(const StringName &p_name, const Variant &p_value);
+	bool _get(const StringName &p_name, Variant &r_ret) const;
+	void _get_property_list(List<PropertyInfo> *p_list) const;
+	static void _bind_methods();
+
+public:
+	virtual StringName get_message(const StringName &p_src_text, const StringName &p_context = "") const override; //overridable for other implementations
+	virtual StringName get_plural_message(const StringName &p_src_text, const StringName &p_plural_text, int p_n, const StringName &p_context = "") const override;
+	virtual Vector<String> get_translated_message_list() const override;
+	void generate(const Ref<Translation> &p_from);
+
+	OptimizedTranslation() {}
+};