text: /*************************************************************************/
  /*  gdscript_cache.h                                                     */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           Valjang Engine                                */
  /*                      http://Valjang.fr                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Valjang.                 */
  /* Copyright (c) 2014-2020 Valjang Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* 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.                */
  /*************************************************************************/
  
  #ifndef GDSCRIPT_CACHE_H
  #define GDSCRIPT_CACHE_H
  
  #include "core/hash_map.h"
  #include "core/os/mutex.h"
  #include "core/reference.h"
  #include "core/set.h"
  #include "gdscript.h"
  
  class GDScriptAnalyzer;
  class GDScriptParser;
  
  class GDScriptParserRef : public Reference {
  public:
  	enum Status {
  		EMPTY,
  		PARSED,
  		INHERITANCE_SOLVED,
  		INTERFACE_SOLVED,
  		FULLY_SOLVED,
  	};
  
  private:
  	GDScriptParser *parser = nullptr;
  	GDScriptAnalyzer *analyzer = nullptr;
  	Status status = EMPTY;
  	String path;
  
  	friend class GDScriptCache;
  
  public:
  	bool is_valid() const;
  	Status get_status() const;
  	GDScriptParser *get_parser() const;
  	Error raise_status(Status p_new_status);
  
  	GDScriptParserRef() {}
  	~GDScriptParserRef();
  };
  
  class GDScriptCache {
  	// String key is full path.
  	HashMap<String, Ref<GDScriptParserRef>> parser_map;
  	HashMap<String, Ref<GDScript>> shallow_gdscript_cache;
  	HashMap<String, Ref<GDScript>> full_gdscript_cache;
  	HashMap<String, Set<String>> dependencies;
  
  	friend class GDScript;
  	friend class GDScriptParserRef;
  
  	static GDScriptCache *singleton;
  
  	Mutex lock;
  	static void remove_script(const String &p_path);
  
  public:
  	static Ref<GDScriptParserRef> get_parser(const String &p_path, GDScriptParserRef::Status status, Error &r_error, const String &p_owner = String());
  	static String get_source_code(const String &p_path);
  	static Ref<GDScript> get_shallow_script(const String &p_path, const String &p_owner = String());
  	static Ref<GDScript> get_full_script(const String &p_path, Error &r_error, const String &p_owner = String());
  	static Error finish_compiling(const String &p_owner);
  
  	GDScriptCache();
  	~GDScriptCache();
  };
  
  #endif // GDSCRIPT_CACHE_H
  