gdscript.h 22 KB

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  1. /**************************************************************************/
  2. /* gdscript.h */
  3. /**************************************************************************/
  4. /* This file is part of: */
  5. /* GODOT ENGINE */
  6. /* https://godotengine.org */
  7. /**************************************************************************/
  8. /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
  9. /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
  10. /* */
  11. /* Permission is hereby granted, free of charge, to any person obtaining */
  12. /* a copy of this software and associated documentation files (the */
  13. /* "Software"), to deal in the Software without restriction, including */
  14. /* without limitation the rights to use, copy, modify, merge, publish, */
  15. /* distribute, sublicense, and/or sell copies of the Software, and to */
  16. /* permit persons to whom the Software is furnished to do so, subject to */
  17. /* the following conditions: */
  18. /* */
  19. /* The above copyright notice and this permission notice shall be */
  20. /* included in all copies or substantial portions of the Software. */
  21. /* */
  22. /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
  23. /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
  24. /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
  25. /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
  26. /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
  27. /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
  28. /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
  29. /**************************************************************************/
  30. #ifndef GDSCRIPT_H
  31. #define GDSCRIPT_H
  32. #include "core/io/resource_loader.h"
  33. #include "core/io/resource_saver.h"
  34. #include "core/script_language.h"
  35. #include "gdscript_function.h"
  36. class GDScriptNativeClass : public Reference {
  37. GDCLASS(GDScriptNativeClass, Reference);
  38. StringName name;
  39. protected:
  40. bool _get(const StringName &p_name, Variant &r_ret) const;
  41. static void _bind_methods();
  42. public:
  43. _FORCE_INLINE_ const StringName &get_name() const { return name; }
  44. Variant _new();
  45. Object *instance();
  46. GDScriptNativeClass(const StringName &p_name);
  47. };
  48. class GDScript : public Script {
  49. GDCLASS(GDScript, Script);
  50. bool tool;
  51. bool valid;
  52. struct MemberInfo {
  53. int index;
  54. StringName setter;
  55. StringName getter;
  56. MultiplayerAPI::RPCMode rpc_mode;
  57. GDScriptDataType data_type;
  58. };
  59. friend class GDScriptInstance;
  60. friend class GDScriptFunction;
  61. friend class GDScriptCompiler;
  62. friend class GDScriptFunctions;
  63. friend class GDScriptLanguage;
  64. Ref<GDScriptNativeClass> native;
  65. Ref<GDScript> base;
  66. GDScript *_base; //fast pointer access
  67. GDScript *_owner; //for subclasses
  68. Set<StringName> members; //members are just indices to the instanced script.
  69. Map<StringName, Variant> constants;
  70. Map<StringName, GDScriptFunction *> member_functions;
  71. Map<StringName, MemberInfo> member_indices; //members are just indices to the instanced script.
  72. Map<StringName, Ref<GDScript>> subclasses;
  73. Map<StringName, Vector<StringName>> _signals;
  74. #ifdef TOOLS_ENABLED
  75. Map<StringName, int> member_lines;
  76. Map<StringName, Variant> member_default_values;
  77. List<PropertyInfo> members_cache;
  78. Map<StringName, Variant> member_default_values_cache;
  79. Ref<GDScript> base_cache;
  80. Set<ObjectID> inheriters_cache;
  81. bool source_changed_cache;
  82. bool placeholder_fallback_enabled;
  83. void _update_exports_values(Map<StringName, Variant> &values, List<PropertyInfo> &propnames);
  84. #endif
  85. Map<StringName, PropertyInfo> member_info;
  86. GDScriptFunction *initializer; //direct pointer to _init , faster to locate
  87. int subclass_count;
  88. Set<Object *> instances;
  89. //exported members
  90. String source;
  91. String path;
  92. String name;
  93. String fully_qualified_name;
  94. SelfList<GDScript> script_list;
  95. SelfList<GDScriptFunctionState>::List pending_func_states;
  96. void _clear_pending_func_states();
  97. GDScriptInstance *_create_instance(const Variant **p_args, int p_argcount, Object *p_owner, bool p_isref, Variant::CallError &r_error);
  98. void _set_subclass_path(Ref<GDScript> &p_sc, const String &p_path);
  99. String _get_debug_path() const;
  100. #ifdef TOOLS_ENABLED
  101. Set<PlaceHolderScriptInstance *> placeholders;
  102. //void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
  103. virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder);
  104. #endif
  105. #ifdef DEBUG_ENABLED
  106. Map<ObjectID, List<Pair<StringName, Variant>>> pending_reload_state;
  107. #endif
  108. bool _update_exports(bool *r_err = nullptr, bool p_recursive_call = false, PlaceHolderScriptInstance *p_instance_to_update = nullptr);
  109. void _save_orphaned_subclasses();
  110. protected:
  111. bool _get(const StringName &p_name, Variant &r_ret) const;
  112. bool _set(const StringName &p_name, const Variant &p_value);
  113. void _get_property_list(List<PropertyInfo> *p_properties) const;
  114. Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
  115. //void call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount);
  116. static void _bind_methods();
  117. public:
  118. virtual bool is_valid() const { return valid; }
  119. bool inherits_script(const Ref<Script> &p_script) const;
  120. const Map<StringName, Ref<GDScript>> &get_subclasses() const { return subclasses; }
  121. const Map<StringName, Variant> &get_constants() const { return constants; }
  122. const Set<StringName> &get_members() const { return members; }
  123. const GDScriptDataType &get_member_type(const StringName &p_member) const {
  124. CRASH_COND(!member_indices.has(p_member));
  125. return member_indices[p_member].data_type;
  126. }
  127. const Map<StringName, GDScriptFunction *> &get_member_functions() const { return member_functions; }
  128. const Ref<GDScriptNativeClass> &get_native() const { return native; }
  129. const String &get_script_class_name() const { return name; }
  130. virtual bool has_script_signal(const StringName &p_signal) const;
  131. virtual void get_script_signal_list(List<MethodInfo> *r_signals) const;
  132. bool is_tool() const { return tool; }
  133. Ref<GDScript> get_base() const;
  134. const Map<StringName, MemberInfo> &debug_get_member_indices() const { return member_indices; }
  135. const Map<StringName, GDScriptFunction *> &debug_get_member_functions() const; //this is debug only
  136. StringName debug_get_member_by_index(int p_idx) const;
  137. Variant _new(const Variant **p_args, int p_argcount, Variant::CallError &r_error);
  138. virtual bool can_instance() const;
  139. virtual Ref<Script> get_base_script() const;
  140. virtual StringName get_instance_base_type() const; // this may not work in all scripts, will return empty if so
  141. virtual ScriptInstance *instance_create(Object *p_this);
  142. virtual PlaceHolderScriptInstance *placeholder_instance_create(Object *p_this);
  143. virtual bool instance_has(const Object *p_this) const;
  144. virtual bool has_source_code() const;
  145. virtual String get_source_code() const;
  146. virtual void set_source_code(const String &p_code);
  147. virtual void update_exports();
  148. virtual Error reload(bool p_keep_state = false);
  149. void set_script_path(const String &p_path) { path = p_path; } //because subclasses need a path too...
  150. Error load_source_code(const String &p_path);
  151. Error load_byte_code(const String &p_path);
  152. Vector<uint8_t> get_as_byte_code() const;
  153. bool get_property_default_value(const StringName &p_property, Variant &r_value) const;
  154. virtual void get_script_method_list(List<MethodInfo> *p_list) const;
  155. virtual bool has_method(const StringName &p_method) const;
  156. virtual MethodInfo get_method_info(const StringName &p_method) const;
  157. virtual void get_script_property_list(List<PropertyInfo> *p_list) const;
  158. virtual ScriptLanguage *get_language() const;
  159. virtual int get_member_line(const StringName &p_member) const {
  160. #ifdef TOOLS_ENABLED
  161. if (member_lines.has(p_member)) {
  162. return member_lines[p_member];
  163. }
  164. #endif
  165. return -1;
  166. }
  167. virtual void get_constants(Map<StringName, Variant> *p_constants);
  168. virtual void get_members(Set<StringName> *p_members);
  169. #ifdef TOOLS_ENABLED
  170. virtual bool is_placeholder_fallback_enabled() const { return placeholder_fallback_enabled; }
  171. #endif
  172. GDScript();
  173. ~GDScript();
  174. };
  175. class GDScriptInstance : public ScriptInstance {
  176. friend class GDScript;
  177. friend class GDScriptFunction;
  178. friend class GDScriptFunctions;
  179. friend class GDScriptCompiler;
  180. Object *owner;
  181. Ref<GDScript> script;
  182. #ifdef DEBUG_ENABLED
  183. Map<StringName, int> member_indices_cache; //used only for hot script reloading
  184. #endif
  185. Vector<Variant> members;
  186. bool base_ref;
  187. SelfList<GDScriptFunctionState>::List pending_func_states;
  188. void _ml_call_reversed(GDScript *sptr, const StringName &p_method, const Variant **p_args, int p_argcount);
  189. public:
  190. virtual Object *get_owner() { return owner; }
  191. virtual bool set(const StringName &p_name, const Variant &p_value);
  192. virtual bool get(const StringName &p_name, Variant &r_ret) const;
  193. virtual void get_property_list(List<PropertyInfo> *p_properties) const;
  194. virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = nullptr) const;
  195. virtual void get_method_list(List<MethodInfo> *p_list) const;
  196. virtual bool has_method(const StringName &p_method) const;
  197. virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
  198. virtual void call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount);
  199. virtual void call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount);
  200. Variant debug_get_member_by_index(int p_idx) const { return members[p_idx]; }
  201. virtual void notification(int p_notification);
  202. String to_string(bool *r_valid);
  203. virtual Ref<Script> get_script() const;
  204. virtual ScriptLanguage *get_language();
  205. void reload_members();
  206. virtual MultiplayerAPI::RPCMode get_rpc_mode(const StringName &p_method) const;
  207. virtual MultiplayerAPI::RPCMode get_rset_mode(const StringName &p_variable) const;
  208. GDScriptInstance();
  209. ~GDScriptInstance();
  210. };
  211. #ifdef DEBUG_ENABLED
  212. struct GDScriptWarning {
  213. enum Code {
  214. UNASSIGNED_VARIABLE, // Variable used but never assigned
  215. UNASSIGNED_VARIABLE_OP_ASSIGN, // Variable never assigned but used in an assignment operation (+=, *=, etc)
  216. UNUSED_VARIABLE, // Local variable is declared but never used
  217. SHADOWED_VARIABLE, // Variable name shadowed by other variable
  218. UNUSED_CLASS_VARIABLE, // Class variable is declared but never used in the file
  219. UNUSED_ARGUMENT, // Function argument is never used
  220. UNREACHABLE_CODE, // Code after a return statement
  221. STANDALONE_EXPRESSION, // Expression not assigned to a variable
  222. VOID_ASSIGNMENT, // Function returns void but it's assigned to a variable
  223. NARROWING_CONVERSION, // Float value into an integer slot, precision is lost
  224. FUNCTION_MAY_YIELD, // Typed assign of function call that yields (it may return a function state)
  225. VARIABLE_CONFLICTS_FUNCTION, // Variable has the same name of a function
  226. FUNCTION_CONFLICTS_VARIABLE, // Function has the same name of a variable
  227. FUNCTION_CONFLICTS_CONSTANT, // Function has the same name of a constant
  228. INCOMPATIBLE_TERNARY, // Possible values of a ternary if are not mutually compatible
  229. UNUSED_SIGNAL, // Signal is defined but never emitted
  230. RETURN_VALUE_DISCARDED, // Function call returns something but the value isn't used
  231. PROPERTY_USED_AS_FUNCTION, // Function not found, but there's a property with the same name
  232. CONSTANT_USED_AS_FUNCTION, // Function not found, but there's a constant with the same name
  233. FUNCTION_USED_AS_PROPERTY, // Property not found, but there's a function with the same name
  234. INTEGER_DIVISION, // Integer divide by integer, decimal part is discarded
  235. UNSAFE_PROPERTY_ACCESS, // Property not found in the detected type (but can be in subtypes)
  236. UNSAFE_METHOD_ACCESS, // Function not found in the detected type (but can be in subtypes)
  237. UNSAFE_CAST, // Cast used in an unknown type
  238. UNSAFE_CALL_ARGUMENT, // Function call argument is of a supertype of the require argument
  239. DEPRECATED_KEYWORD, // The keyword is deprecated and should be replaced
  240. STANDALONE_TERNARY, // Return value of ternary expression is discarded
  241. EXPORT_HINT_TYPE_MISTMATCH, // The type of the variable's default value doesn't match its export hint
  242. WARNING_MAX,
  243. } code;
  244. Vector<String> symbols;
  245. int line;
  246. String get_name() const;
  247. String get_message() const;
  248. static String get_name_from_code(Code p_code);
  249. static Code get_code_from_name(const String &p_name);
  250. GDScriptWarning() :
  251. code(WARNING_MAX),
  252. line(-1) {}
  253. };
  254. #endif // DEBUG_ENABLED
  255. class GDScriptLanguage : public ScriptLanguage {
  256. friend class GDScriptFunctionState;
  257. static GDScriptLanguage *singleton;
  258. Variant *_global_array;
  259. Vector<Variant> global_array;
  260. Map<StringName, int> globals;
  261. Map<StringName, Variant> named_globals;
  262. struct CallLevel {
  263. Variant *stack;
  264. GDScriptFunction *function;
  265. GDScriptInstance *instance;
  266. int *ip;
  267. int *line;
  268. };
  269. int _debug_parse_err_line;
  270. String _debug_parse_err_file;
  271. String _debug_error;
  272. int _debug_call_stack_pos;
  273. int _debug_max_call_stack;
  274. CallLevel *_call_stack;
  275. void _add_global(const StringName &p_name, const Variant &p_value);
  276. friend class GDScriptInstance;
  277. Mutex lock;
  278. friend class GDScript;
  279. SelfList<GDScript>::List script_list;
  280. friend class GDScriptFunction;
  281. SelfList<GDScriptFunction>::List function_list;
  282. bool profiling;
  283. uint64_t script_frame_time;
  284. Map<String, ObjectID> orphan_subclasses;
  285. public:
  286. int calls;
  287. bool debug_break(const String &p_error, bool p_allow_continue = true);
  288. bool debug_break_parse(const String &p_file, int p_line, const String &p_error);
  289. _FORCE_INLINE_ void enter_function(GDScriptInstance *p_instance, GDScriptFunction *p_function, Variant *p_stack, int *p_ip, int *p_line) {
  290. if (Thread::get_main_id() != Thread::get_caller_id()) {
  291. return; //no support for other threads than main for now
  292. }
  293. if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0) {
  294. ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() + 1);
  295. }
  296. if (_debug_call_stack_pos >= _debug_max_call_stack) {
  297. //stack overflow
  298. _debug_error = "Stack Overflow (Stack Size: " + itos(_debug_max_call_stack) + ")";
  299. ScriptDebugger::get_singleton()->debug(this);
  300. return;
  301. }
  302. _call_stack[_debug_call_stack_pos].stack = p_stack;
  303. _call_stack[_debug_call_stack_pos].instance = p_instance;
  304. _call_stack[_debug_call_stack_pos].function = p_function;
  305. _call_stack[_debug_call_stack_pos].ip = p_ip;
  306. _call_stack[_debug_call_stack_pos].line = p_line;
  307. _debug_call_stack_pos++;
  308. }
  309. _FORCE_INLINE_ void exit_function() {
  310. if (Thread::get_main_id() != Thread::get_caller_id()) {
  311. return; //no support for other threads than main for now
  312. }
  313. if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0) {
  314. ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() - 1);
  315. }
  316. if (_debug_call_stack_pos == 0) {
  317. _debug_error = "Stack Underflow (Engine Bug)";
  318. ScriptDebugger::get_singleton()->debug(this);
  319. return;
  320. }
  321. _debug_call_stack_pos--;
  322. }
  323. virtual Vector<StackInfo> debug_get_current_stack_info() {
  324. if (Thread::get_main_id() != Thread::get_caller_id()) {
  325. return Vector<StackInfo>();
  326. }
  327. Vector<StackInfo> csi;
  328. csi.resize(_debug_call_stack_pos);
  329. for (int i = 0; i < _debug_call_stack_pos; i++) {
  330. csi.write[_debug_call_stack_pos - i - 1].line = _call_stack[i].line ? *_call_stack[i].line : 0;
  331. if (_call_stack[i].function) {
  332. csi.write[_debug_call_stack_pos - i - 1].func = _call_stack[i].function->get_name();
  333. csi.write[_debug_call_stack_pos - i - 1].file = _call_stack[i].function->get_script()->get_path();
  334. }
  335. }
  336. return csi;
  337. }
  338. struct {
  339. StringName _init;
  340. StringName _notification;
  341. StringName _set;
  342. StringName _get;
  343. StringName _get_property_list;
  344. StringName _script_source;
  345. } strings;
  346. _FORCE_INLINE_ int get_global_array_size() const { return global_array.size(); }
  347. _FORCE_INLINE_ Variant *get_global_array() { return _global_array; }
  348. _FORCE_INLINE_ const Map<StringName, int> &get_global_map() const { return globals; }
  349. _FORCE_INLINE_ const Map<StringName, Variant> &get_named_globals_map() const { return named_globals; }
  350. _FORCE_INLINE_ static GDScriptLanguage *get_singleton() { return singleton; }
  351. virtual String get_name() const;
  352. /* LANGUAGE FUNCTIONS */
  353. virtual void init();
  354. virtual String get_type() const;
  355. virtual String get_extension() const;
  356. virtual Error execute_file(const String &p_path);
  357. virtual void finish();
  358. /* EDITOR FUNCTIONS */
  359. virtual void get_reserved_words(List<String> *p_words) const;
  360. virtual bool is_control_flow_keyword(String p_keywords) const;
  361. virtual void get_comment_delimiters(List<String> *p_delimiters) const;
  362. virtual void get_string_delimiters(List<String> *p_delimiters) const;
  363. virtual String _get_processed_template(const String &p_template, const String &p_base_class_name) const;
  364. virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
  365. virtual bool is_using_templates();
  366. virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
  367. virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
  368. virtual Script *create_script() const;
  369. virtual bool has_named_classes() const;
  370. virtual bool supports_builtin_mode() const;
  371. virtual bool can_inherit_from_file() { return true; }
  372. virtual int find_function(const String &p_function, const String &p_code) const;
  373. virtual String make_function(const String &p_class, const String &p_name, const PoolStringArray &p_args) const;
  374. virtual Error complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptCodeCompletionOption> *r_options, bool &r_forced, String &r_call_hint);
  375. #ifdef TOOLS_ENABLED
  376. virtual Error lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result);
  377. #endif
  378. virtual String _get_indentation() const;
  379. virtual void auto_indent_code(String &p_code, int p_from_line, int p_to_line) const;
  380. virtual void add_global_constant(const StringName &p_variable, const Variant &p_value);
  381. virtual void add_named_global_constant(const StringName &p_name, const Variant &p_value);
  382. virtual void remove_named_global_constant(const StringName &p_name);
  383. /* DEBUGGER FUNCTIONS */
  384. virtual String debug_get_error() const;
  385. virtual int debug_get_stack_level_count() const;
  386. virtual int debug_get_stack_level_line(int p_level) const;
  387. virtual String debug_get_stack_level_function(int p_level) const;
  388. virtual String debug_get_stack_level_source(int p_level) const;
  389. virtual void debug_get_stack_level_locals(int p_level, List<String> *p_locals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
  390. virtual void debug_get_stack_level_members(int p_level, List<String> *p_members, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
  391. virtual ScriptInstance *debug_get_stack_level_instance(int p_level);
  392. virtual void debug_get_globals(List<String> *p_globals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
  393. virtual String debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems = -1, int p_max_depth = -1);
  394. virtual void reload_all_scripts();
  395. virtual void reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload);
  396. virtual void frame();
  397. virtual void get_public_functions(List<MethodInfo> *p_functions) const;
  398. virtual void get_public_constants(List<Pair<String, Variant>> *p_constants) const;
  399. virtual void profiling_start();
  400. virtual void profiling_stop();
  401. virtual int profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max);
  402. virtual int profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max);
  403. /* LOADER FUNCTIONS */
  404. virtual void get_recognized_extensions(List<String> *p_extensions) const;
  405. /* GLOBAL CLASSES */
  406. virtual bool handles_global_class_type(const String &p_type) const;
  407. virtual String get_global_class_name(const String &p_path, String *r_base_type = nullptr, String *r_icon_path = nullptr) const;
  408. void add_orphan_subclass(const String &p_qualified_name, const ObjectID &p_subclass);
  409. Ref<GDScript> get_orphan_subclass(const String &p_qualified_name);
  410. GDScriptLanguage();
  411. ~GDScriptLanguage();
  412. };
  413. class ResourceFormatLoaderGDScript : public ResourceFormatLoader {
  414. public:
  415. virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = nullptr);
  416. virtual void get_recognized_extensions(List<String> *p_extensions) const;
  417. virtual bool handles_type(const String &p_type) const;
  418. virtual String get_resource_type(const String &p_path) const;
  419. virtual void get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types = false);
  420. };
  421. class ResourceFormatSaverGDScript : public ResourceFormatSaver {
  422. public:
  423. virtual Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
  424. virtual void get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const;
  425. virtual bool recognize(const RES &p_resource) const;
  426. };
  427. #endif // GDSCRIPT_H