/*************************************************************************/ /* script_language.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 Godot 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 SCRIPT_LANGUAGE_H #define SCRIPT_LANGUAGE_H #include "core/doc_data.h" #include "core/io/multiplayer_api.h" #include "core/io/resource.h" #include "core/templates/map.h" #include "core/templates/pair.h" class ScriptLanguage; typedef void (*ScriptEditRequestFunction)(const String &p_path); class ScriptServer { enum { MAX_LANGUAGES = 16 }; static ScriptLanguage *_languages[MAX_LANGUAGES]; static int _language_count; static bool scripting_enabled; static bool reload_scripts_on_save; static bool languages_finished; struct GlobalScriptClass { StringName language; String path; String base; }; static HashMap<StringName, GlobalScriptClass> global_classes; public: static ScriptEditRequestFunction edit_request_func; static void set_scripting_enabled(bool p_enabled); static bool is_scripting_enabled(); _FORCE_INLINE_ static int get_language_count() { return _language_count; } static ScriptLanguage *get_language(int p_idx); static void register_language(ScriptLanguage *p_language); static void unregister_language(ScriptLanguage *p_language); static void set_reload_scripts_on_save(bool p_enable); static bool is_reload_scripts_on_save_enabled(); static void thread_enter(); static void thread_exit(); static void global_classes_clear(); static void add_global_class(const StringName &p_class, const StringName &p_base, const StringName &p_language, const String &p_path); static void remove_global_class(const StringName &p_class); static bool is_global_class(const StringName &p_class); static StringName get_global_class_language(const StringName &p_class); static String get_global_class_path(const String &p_class); static StringName get_global_class_base(const String &p_class); static StringName get_global_class_native_base(const String &p_class); static void get_global_class_list(List<StringName> *r_global_classes); static void save_global_classes(); static void init_languages(); static void finish_languages(); static bool are_languages_finished() { return languages_finished; } }; class ScriptInstance; class PlaceHolderScriptInstance; class Script : public Resource { GDCLASS(Script, Resource); OBJ_SAVE_TYPE(Script); protected: virtual bool editor_can_reload_from_file() override { return false; } // this is handled by editor better void _notification(int p_what); static void _bind_methods(); friend class PlaceHolderScriptInstance; virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {} Variant _get_property_default_value(const StringName &p_property); Array _get_script_property_list(); Array _get_script_method_list(); Array _get_script_signal_list(); Dictionary _get_script_constant_map(); public: virtual bool can_instantiate() const = 0; virtual Ref<Script> get_base_script() const = 0; //for script inheritance virtual bool inherits_script(const Ref<Script> &p_script) const = 0; virtual StringName get_instance_base_type() const = 0; // this may not work in all scripts, will return empty if so virtual ScriptInstance *instance_create(Object *p_this) = 0; virtual PlaceHolderScriptInstance *placeholder_instance_create(Object *p_this) { return nullptr; } virtual bool instance_has(const Object *p_this) const = 0; virtual bool has_source_code() const = 0; virtual String get_source_code() const = 0; virtual void set_source_code(const String &p_code) = 0; virtual Error reload(bool p_keep_state = false) = 0; #ifdef TOOLS_ENABLED virtual const Vector<DocData::ClassDoc> &get_documentation() const = 0; #endif // TOOLS_ENABLED virtual bool has_method(const StringName &p_method) const = 0; virtual MethodInfo get_method_info(const StringName &p_method) const = 0; virtual bool is_tool() const = 0; virtual bool is_valid() const = 0; virtual ScriptLanguage *get_language() const = 0; virtual bool has_script_signal(const StringName &p_signal) const = 0; virtual void get_script_signal_list(List<MethodInfo> *r_signals) const = 0; virtual bool get_property_default_value(const StringName &p_property, Variant &r_value) const = 0; virtual void update_exports() {} //editor tool virtual void get_script_method_list(List<MethodInfo> *p_list) const = 0; virtual void get_script_property_list(List<PropertyInfo> *p_list) const = 0; virtual int get_member_line(const StringName &p_member) const { return -1; } virtual void get_constants(Map<StringName, Variant> *p_constants) {} virtual void get_members(Set<StringName> *p_constants) {} virtual bool is_placeholder_fallback_enabled() const { return false; } virtual const Vector<MultiplayerAPI::RPCConfig> get_rpc_methods() const = 0; Script() {} }; class ScriptInstance { public: virtual bool set(const StringName &p_name, const Variant &p_value) = 0; virtual bool get(const StringName &p_name, Variant &r_ret) const = 0; virtual void get_property_list(List<PropertyInfo> *p_properties) const = 0; virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = nullptr) const = 0; virtual Object *get_owner() { return nullptr; } virtual void get_property_state(List<Pair<StringName, Variant>> &state); virtual void get_method_list(List<MethodInfo> *p_list) const = 0; virtual bool has_method(const StringName &p_method) const = 0; virtual Variant call(const StringName &p_method, VARIANT_ARG_LIST); virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) = 0; virtual void notification(int p_notification) = 0; virtual String to_string(bool *r_valid) { if (r_valid) { *r_valid = false; } return String(); } //this is used by script languages that keep a reference counter of their own //you can make make Ref<> not die when it reaches zero, so deleting the reference //depends entirely from the script virtual void refcount_incremented() {} virtual bool refcount_decremented() { return true; } //return true if it can die virtual Ref<Script> get_script() const = 0; virtual bool is_placeholder() const { return false; } virtual void property_set_fallback(const StringName &p_name, const Variant &p_value, bool *r_valid); virtual Variant property_get_fallback(const StringName &p_name, bool *r_valid); virtual const Vector<MultiplayerAPI::RPCConfig> get_rpc_methods() const = 0; virtual ScriptLanguage *get_language() = 0; virtual ~ScriptInstance(); }; struct ScriptCodeCompletionOption { /* Keep enum in Sync with: */ /* /scene/gui/code_edit.h - CodeEdit::CodeCompletionKind */ enum Kind { KIND_CLASS, KIND_FUNCTION, KIND_SIGNAL, KIND_VARIABLE, KIND_MEMBER, KIND_ENUM, KIND_CONSTANT, KIND_NODE_PATH, KIND_FILE_PATH, KIND_PLAIN_TEXT, }; Kind kind = KIND_PLAIN_TEXT; String display; String insert_text; Color font_color; RES icon; Variant default_value; ScriptCodeCompletionOption() {} ScriptCodeCompletionOption(const String &p_text, Kind p_kind) { display = p_text; insert_text = p_text; kind = p_kind; } }; class ScriptCodeCompletionCache { static ScriptCodeCompletionCache *singleton; public: static ScriptCodeCompletionCache *get_singleton() { return singleton; } ScriptCodeCompletionCache(); virtual ~ScriptCodeCompletionCache() {} }; class ScriptLanguage { public: virtual String get_name() const = 0; /* LANGUAGE FUNCTIONS */ virtual void init() = 0; virtual String get_type() const = 0; virtual String get_extension() const = 0; virtual Error execute_file(const String &p_path) = 0; virtual void finish() = 0; /* EDITOR FUNCTIONS */ struct Warning { int start_line = -1, end_line = -1; int leftmost_column = -1, rightmost_column = -1; int code; String string_code; String message; }; struct ScriptError { int line = -1; int column = -1; String message; }; void get_core_type_words(List<String> *p_core_type_words) const; virtual void get_reserved_words(List<String> *p_words) const = 0; virtual bool is_control_flow_keyword(String p_string) const = 0; virtual void get_comment_delimiters(List<String> *p_delimiters) const = 0; virtual void get_string_delimiters(List<String> *p_delimiters) const = 0; virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const = 0; virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script) {} virtual bool is_using_templates() { return false; } virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptError> *r_errors = nullptr, List<Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const = 0; virtual String validate_path(const String &p_path) const { return ""; } virtual Script *create_script() const = 0; virtual bool has_named_classes() const = 0; virtual bool supports_builtin_mode() const = 0; virtual bool supports_documentation() const { return false; } virtual bool can_inherit_from_file() const { return false; } virtual int find_function(const String &p_function, const String &p_code) const = 0; virtual String make_function(const String &p_class, const String &p_name, const PackedStringArray &p_args) const = 0; virtual Error open_in_external_editor(const Ref<Script> &p_script, int p_line, int p_col) { return ERR_UNAVAILABLE; } virtual bool overrides_external_editor() { return false; } virtual Error complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptCodeCompletionOption> *r_options, bool &r_force, String &r_call_hint) { return ERR_UNAVAILABLE; } struct LookupResult { enum Type { RESULT_SCRIPT_LOCATION, RESULT_CLASS, RESULT_CLASS_CONSTANT, RESULT_CLASS_PROPERTY, RESULT_CLASS_METHOD, RESULT_CLASS_ENUM, RESULT_CLASS_TBD_GLOBALSCOPE }; Type type; Ref<Script> script; String class_name; String class_member; int location; }; virtual Error lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result) { return ERR_UNAVAILABLE; } virtual void auto_indent_code(String &p_code, int p_from_line, int p_to_line) const = 0; virtual void add_global_constant(const StringName &p_variable, const Variant &p_value) = 0; virtual void add_named_global_constant(const StringName &p_name, const Variant &p_value) {} virtual void remove_named_global_constant(const StringName &p_name) {} /* MULTITHREAD FUNCTIONS */ //some VMs need to be notified of thread creation/exiting to allocate a stack virtual void thread_enter() {} virtual void thread_exit() {} /* DEBUGGER FUNCTIONS */ struct StackInfo { String file; String func; int line; }; virtual String debug_get_error() const = 0; virtual int debug_get_stack_level_count() const = 0; virtual int debug_get_stack_level_line(int p_level) const = 0; virtual String debug_get_stack_level_function(int p_level) const = 0; virtual String debug_get_stack_level_source(int p_level) const = 0; 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) = 0; 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) = 0; virtual ScriptInstance *debug_get_stack_level_instance(int p_level) { return nullptr; } virtual void debug_get_globals(List<String> *p_globals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1) = 0; virtual String debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems = -1, int p_max_depth = -1) = 0; virtual Vector<StackInfo> debug_get_current_stack_info() { return Vector<StackInfo>(); } virtual void reload_all_scripts() = 0; virtual void reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload) = 0; /* LOADER FUNCTIONS */ virtual void get_recognized_extensions(List<String> *p_extensions) const = 0; virtual void get_public_functions(List<MethodInfo> *p_functions) const = 0; virtual void get_public_constants(List<Pair<String, Variant>> *p_constants) const = 0; struct ProfilingInfo { StringName signature; uint64_t call_count; uint64_t total_time; uint64_t self_time; }; virtual void profiling_start() = 0; virtual void profiling_stop() = 0; virtual int profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max) = 0; virtual int profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max) = 0; virtual void *alloc_instance_binding_data(Object *p_object) { return nullptr; } //optional, not used by all languages virtual void free_instance_binding_data(void *p_data) {} //optional, not used by all languages virtual void refcount_incremented_instance_binding(Object *p_object) {} //optional, not used by all languages virtual bool refcount_decremented_instance_binding(Object *p_object) { return true; } //return true if it can die //optional, not used by all languages virtual void frame(); virtual bool handles_global_class_type(const String &p_type) const { return false; } virtual String get_global_class_name(const String &p_path, String *r_base_type = nullptr, String *r_icon_path = nullptr) const { return String(); } virtual ~ScriptLanguage() {} }; extern uint8_t script_encryption_key[32]; class PlaceHolderScriptInstance : public ScriptInstance { Object *owner; List<PropertyInfo> properties; Map<StringName, Variant> values; Map<StringName, Variant> constants; ScriptLanguage *language; Ref<Script> script; public: virtual bool set(const StringName &p_name, const Variant &p_value); virtual bool get(const StringName &p_name, Variant &r_ret) const; virtual void get_property_list(List<PropertyInfo> *p_properties) const; virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = nullptr) const; virtual void get_method_list(List<MethodInfo> *p_list) const; virtual bool has_method(const StringName &p_method) const; virtual Variant call(const StringName &p_method, VARIANT_ARG_LIST) { return Variant(); } virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) { r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD; return Variant(); } virtual void notification(int p_notification) {} virtual Ref<Script> get_script() const { return script; } virtual ScriptLanguage *get_language() { return language; } Object *get_owner() { return owner; } void update(const List<PropertyInfo> &p_properties, const Map<StringName, Variant> &p_values); //likely changed in editor virtual bool is_placeholder() const { return true; } virtual void property_set_fallback(const StringName &p_name, const Variant &p_value, bool *r_valid = nullptr); virtual Variant property_get_fallback(const StringName &p_name, bool *r_valid = nullptr); virtual const Vector<MultiplayerAPI::RPCConfig> get_rpc_methods() const { return Vector<MultiplayerAPI::RPCConfig>(); } PlaceHolderScriptInstance(ScriptLanguage *p_language, Ref<Script> p_script, Object *p_owner); ~PlaceHolderScriptInstance(); }; #endif // SCRIPT_LANGUAGE_H