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godot/modules/gdscript/gdscript.h

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/*************************************************************************/
/* gdscript.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 GDSCRIPT_H
#define GDSCRIPT_H
#include "core/io/resource_loader.h"
#include "core/io/resource_saver.h"
#include "core/script_language.h"
#include "gdscript_function.h"
class GDScriptNativeClass : public Reference {
GDCLASS(GDScriptNativeClass, Reference);
StringName name;
protected:
bool _get(const StringName &p_name, Variant &r_ret) const;
static void _bind_methods();
public:
_FORCE_INLINE_ const StringName &get_name() const { return name; }
Variant _new();
Object *instance();
GDScriptNativeClass(const StringName &p_name);
};
class GDScript : public Script {
GDCLASS(GDScript, Script);
bool tool;
bool valid;
struct MemberInfo {
int index;
StringName setter;
StringName getter;
MultiplayerAPI::RPCMode rpc_mode;
GDScriptDataType data_type;
};
friend class GDScriptInstance;
friend class GDScriptFunction;
friend class GDScriptCompiler;
friend class GDScriptFunctions;
friend class GDScriptLanguage;
Variant _static_ref; //used for static call
Ref<GDScriptNativeClass> native;
Ref<GDScript> base;
GDScript *_base; //fast pointer access
GDScript *_owner; //for subclasses
Set<StringName> members; //members are just indices to the instanced script.
Map<StringName, Variant> constants;
Map<StringName, GDScriptFunction *> member_functions;
Map<StringName, MemberInfo> member_indices; //members are just indices to the instanced script.
Map<StringName, Ref<GDScript> > subclasses;
Map<StringName, Vector<StringName> > _signals;
#ifdef TOOLS_ENABLED
Map<StringName, int> member_lines;
Map<StringName, Variant> member_default_values;
List<PropertyInfo> members_cache;
Map<StringName, Variant> member_default_values_cache;
Ref<GDScript> base_cache;
Set<ObjectID> inheriters_cache;
bool source_changed_cache;
bool placeholder_fallback_enabled;
void _update_exports_values(Map<StringName, Variant> &values, List<PropertyInfo> &propnames);
#endif
Map<StringName, PropertyInfo> member_info;
GDScriptFunction *initializer; //direct pointer to _init , faster to locate
int subclass_count;
Set<Object *> instances;
//exported members
String source;
String path;
String name;
String fully_qualified_name;
SelfList<GDScript> script_list;
GDScriptInstance *_create_instance(const Variant **p_args, int p_argcount, Object *p_owner, bool p_isref, Variant::CallError &r_error);
void _set_subclass_path(Ref<GDScript> &p_sc, const String &p_path);
#ifdef TOOLS_ENABLED
Set<PlaceHolderScriptInstance *> placeholders;
//void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder);
#endif
#ifdef DEBUG_ENABLED
Map<ObjectID, List<Pair<StringName, Variant> > > pending_reload_state;
#endif
bool _update_exports();
protected:
bool _get(const StringName &p_name, Variant &r_ret) const;
bool _set(const StringName &p_name, const Variant &p_value);
void _get_property_list(List<PropertyInfo> *p_properties) const;
Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
//void call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount);
static void _bind_methods();
public:
virtual bool is_valid() const { return valid; }
const Map<StringName, Ref<GDScript> > &get_subclasses() const { return subclasses; }
const Map<StringName, Variant> &get_constants() const { return constants; }
const Set<StringName> &get_members() const { return members; }
const GDScriptDataType &get_member_type(const StringName &p_member) const {
CRASH_COND(!member_indices.has(p_member));
return member_indices[p_member].data_type;
}
const Map<StringName, GDScriptFunction *> &get_member_functions() const { return member_functions; }
const Ref<GDScriptNativeClass> &get_native() const { return native; }
const String &get_script_class_name() const { return name; }
virtual bool has_script_signal(const StringName &p_signal) const;
virtual void get_script_signal_list(List<MethodInfo> *r_signals) const;
bool is_tool() const { return tool; }
Ref<GDScript> get_base() const;
const Map<StringName, MemberInfo> &debug_get_member_indices() const { return member_indices; }
const Map<StringName, GDScriptFunction *> &debug_get_member_functions() const; //this is debug only
StringName debug_get_member_by_index(int p_idx) const;
Variant _new(const Variant **p_args, int p_argcount, Variant::CallError &r_error);
virtual bool can_instance() const;
virtual Ref<Script> get_base_script() const;
virtual StringName get_instance_base_type() const; // this may not work in all scripts, will return empty if so
virtual ScriptInstance *instance_create(Object *p_this);
virtual PlaceHolderScriptInstance *placeholder_instance_create(Object *p_this);
virtual bool instance_has(const Object *p_this) const;
virtual bool has_source_code() const;
virtual String get_source_code() const;
virtual void set_source_code(const String &p_code);
virtual void update_exports();
virtual Error reload(bool p_keep_state = false);
void set_script_path(const String &p_path) { path = p_path; } //because subclasses need a path too...
Error load_source_code(const String &p_path);
Error load_byte_code(const String &p_path);
Vector<uint8_t> get_as_byte_code() const;
bool get_property_default_value(const StringName &p_property, Variant &r_value) const;
virtual void get_script_method_list(List<MethodInfo> *p_list) const;
virtual bool has_method(const StringName &p_method) const;
virtual MethodInfo get_method_info(const StringName &p_method) const;
virtual void get_script_property_list(List<PropertyInfo> *p_list) const;
virtual ScriptLanguage *get_language() const;
virtual int get_member_line(const StringName &p_member) const {
#ifdef TOOLS_ENABLED
if (member_lines.has(p_member))
return member_lines[p_member];
else
#endif
return -1;
}
virtual void get_constants(Map<StringName, Variant> *p_constants);
virtual void get_members(Set<StringName> *p_members);
#ifdef TOOLS_ENABLED
virtual bool is_placeholder_fallback_enabled() const { return placeholder_fallback_enabled; }
#endif
GDScript();
~GDScript();
};
class GDScriptInstance : public ScriptInstance {
friend class GDScript;
friend class GDScriptFunction;
friend class GDScriptFunctions;
friend class GDScriptCompiler;
Object *owner;
Ref<GDScript> script;
#ifdef DEBUG_ENABLED
Map<StringName, int> member_indices_cache; //used only for hot script reloading
#endif
Vector<Variant> members;
bool base_ref;
void _ml_call_reversed(GDScript *sptr, const StringName &p_method, const Variant **p_args, int p_argcount);
public:
virtual Object *get_owner() { return owner; }
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 = NULL) 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, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
virtual void call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount);
virtual void call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount);
Variant debug_get_member_by_index(int p_idx) const { return members[p_idx]; }
virtual void notification(int p_notification);
String to_string(bool *r_valid);
virtual Ref<Script> get_script() const;
virtual ScriptLanguage *get_language();
void set_path(const String &p_path);
void reload_members();
virtual MultiplayerAPI::RPCMode get_rpc_mode(const StringName &p_method) const;
virtual MultiplayerAPI::RPCMode get_rset_mode(const StringName &p_variable) const;
GDScriptInstance();
~GDScriptInstance();
};
#ifdef DEBUG_ENABLED
struct GDScriptWarning {
enum Code {
UNASSIGNED_VARIABLE, // Variable used but never assigned
UNASSIGNED_VARIABLE_OP_ASSIGN, // Variable never assigned but used in an assignment operation (+=, *=, etc)
UNUSED_VARIABLE, // Local variable is declared but never used
SHADOWED_VARIABLE, // Variable name shadowed by other variable
UNUSED_CLASS_VARIABLE, // Class variable is declared but never used in the file
UNUSED_ARGUMENT, // Function argument is never used
UNREACHABLE_CODE, // Code after a return statement
STANDALONE_EXPRESSION, // Expression not assigned to a variable
VOID_ASSIGNMENT, // Function returns void but it's assigned to a variable
NARROWING_CONVERSION, // Float value into an integer slot, precision is lost
FUNCTION_MAY_YIELD, // Typed assign of function call that yields (it may return a function state)
VARIABLE_CONFLICTS_FUNCTION, // Variable has the same name of a function
FUNCTION_CONFLICTS_VARIABLE, // Function has the same name of a variable
FUNCTION_CONFLICTS_CONSTANT, // Function has the same name of a constant
INCOMPATIBLE_TERNARY, // Possible values of a ternary if are not mutually compatible
UNUSED_SIGNAL, // Signal is defined but never emitted
RETURN_VALUE_DISCARDED, // Function call returns something but the value isn't used
PROPERTY_USED_AS_FUNCTION, // Function not found, but there's a property with the same name
CONSTANT_USED_AS_FUNCTION, // Function not found, but there's a constant with the same name
FUNCTION_USED_AS_PROPERTY, // Property not found, but there's a function with the same name
INTEGER_DIVISION, // Integer divide by integer, decimal part is discarded
UNSAFE_PROPERTY_ACCESS, // Property not found in the detected type (but can be in subtypes)
UNSAFE_METHOD_ACCESS, // Function not found in the detected type (but can be in subtypes)
UNSAFE_CAST, // Cast used in an unknown type
UNSAFE_CALL_ARGUMENT, // Function call argument is of a supertype of the require argument
DEPRECATED_KEYWORD, // The keyword is deprecated and should be replaced
STANDALONE_TERNARY, // Return value of ternary expression is discarded
WARNING_MAX,
} code;
Vector<String> symbols;
int line;
String get_name() const;
String get_message() const;
static String get_name_from_code(Code p_code);
static Code get_code_from_name(const String &p_name);
GDScriptWarning() :
code(WARNING_MAX),
line(-1) {}
};
#endif // DEBUG_ENABLED
class GDScriptLanguage : public ScriptLanguage {
static GDScriptLanguage *singleton;
Variant *_global_array;
Vector<Variant> global_array;
Map<StringName, int> globals;
Map<StringName, Variant> named_globals;
struct CallLevel {
Variant *stack;
GDScriptFunction *function;
GDScriptInstance *instance;
int *ip;
int *line;
};
int _debug_parse_err_line;
String _debug_parse_err_file;
String _debug_error;
int _debug_call_stack_pos;
int _debug_max_call_stack;
CallLevel *_call_stack;
void _add_global(const StringName &p_name, const Variant &p_value);
friend class GDScriptInstance;
Mutex *lock;
friend class GDScript;
SelfList<GDScript>::List script_list;
friend class GDScriptFunction;
SelfList<GDScriptFunction>::List function_list;
bool profiling;
uint64_t script_frame_time;
public:
int calls;
bool debug_break(const String &p_error, bool p_allow_continue = true);
bool debug_break_parse(const String &p_file, int p_line, const String &p_error);
_FORCE_INLINE_ void enter_function(GDScriptInstance *p_instance, GDScriptFunction *p_function, Variant *p_stack, int *p_ip, int *p_line) {
if (Thread::get_main_id() != Thread::get_caller_id())
return; //no support for other threads than main for now
if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0)
ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() + 1);
if (_debug_call_stack_pos >= _debug_max_call_stack) {
//stack overflow
_debug_error = "Stack Overflow (Stack Size: " + itos(_debug_max_call_stack) + ")";
ScriptDebugger::get_singleton()->debug(this);
return;
}
_call_stack[_debug_call_stack_pos].stack = p_stack;
_call_stack[_debug_call_stack_pos].instance = p_instance;
_call_stack[_debug_call_stack_pos].function = p_function;
_call_stack[_debug_call_stack_pos].ip = p_ip;
_call_stack[_debug_call_stack_pos].line = p_line;
_debug_call_stack_pos++;
}
_FORCE_INLINE_ void exit_function() {
if (Thread::get_main_id() != Thread::get_caller_id())
return; //no support for other threads than main for now
if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0)
ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() - 1);
if (_debug_call_stack_pos == 0) {
_debug_error = "Stack Underflow (Engine Bug)";
ScriptDebugger::get_singleton()->debug(this);
return;
}
_debug_call_stack_pos--;
}
virtual Vector<StackInfo> debug_get_current_stack_info() {
if (Thread::get_main_id() != Thread::get_caller_id())
return Vector<StackInfo>();
Vector<StackInfo> csi;
csi.resize(_debug_call_stack_pos);
for (int i = 0; i < _debug_call_stack_pos; i++) {
csi.write[_debug_call_stack_pos - i - 1].line = _call_stack[i].line ? *_call_stack[i].line : 0;
if (_call_stack[i].function) {
csi.write[_debug_call_stack_pos - i - 1].func = _call_stack[i].function->get_name();
csi.write[_debug_call_stack_pos - i - 1].file = _call_stack[i].function->get_script()->get_path();
}
}
return csi;
}
struct {
StringName _init;
StringName _notification;
StringName _set;
StringName _get;
StringName _get_property_list;
StringName _script_source;
} strings;
_FORCE_INLINE_ int get_global_array_size() const { return global_array.size(); }
_FORCE_INLINE_ Variant *get_global_array() { return _global_array; }
_FORCE_INLINE_ const Map<StringName, int> &get_global_map() const { return globals; }
_FORCE_INLINE_ const Map<StringName, Variant> &get_named_globals_map() const { return named_globals; }
_FORCE_INLINE_ static GDScriptLanguage *get_singleton() { return singleton; }
virtual String get_name() const;
/* LANGUAGE FUNCTIONS */
virtual void init();
virtual String get_type() const;
virtual String get_extension() const;
virtual Error execute_file(const String &p_path);
virtual void finish();
/* EDITOR FUNCTIONS */
virtual void get_reserved_words(List<String> *p_words) const;
virtual void get_comment_delimiters(List<String> *p_delimiters) const;
virtual void get_string_delimiters(List<String> *p_delimiters) const;
virtual String _get_processed_template(const String &p_template, const String &p_base_class_name) const;
virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
virtual bool is_using_templates();
virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
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 = NULL, List<ScriptLanguage::Warning> *r_warnings = NULL, Set<int> *r_safe_lines = NULL) const;
virtual Script *create_script() const;
virtual bool has_named_classes() const;
virtual bool supports_builtin_mode() const;
virtual bool can_inherit_from_file() { return true; }
virtual int find_function(const String &p_function, const String &p_code) const;
virtual String make_function(const String &p_class, const String &p_name, const PoolStringArray &p_args) const;
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);
#ifdef TOOLS_ENABLED
virtual Error lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result);
#endif
virtual String _get_indentation() const;
virtual void auto_indent_code(String &p_code, int p_from_line, int p_to_line) const;
virtual void add_global_constant(const StringName &p_variable, const Variant &p_value);
virtual void add_named_global_constant(const StringName &p_name, const Variant &p_value);
virtual void remove_named_global_constant(const StringName &p_name);
/* DEBUGGER FUNCTIONS */
virtual String debug_get_error() const;
virtual int debug_get_stack_level_count() const;
virtual int debug_get_stack_level_line(int p_level) const;
virtual String debug_get_stack_level_function(int p_level) const;
virtual String debug_get_stack_level_source(int p_level) const;
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);
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);
virtual ScriptInstance *debug_get_stack_level_instance(int p_level);
virtual void debug_get_globals(List<String> *p_globals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
virtual String debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems = -1, int p_max_depth = -1);
virtual void reload_all_scripts();
virtual void reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload);
virtual void frame();
virtual void get_public_functions(List<MethodInfo> *p_functions) const;
virtual void get_public_constants(List<Pair<String, Variant> > *p_constants) const;
virtual void profiling_start();
virtual void profiling_stop();
virtual int profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max);
virtual int profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max);
/* LOADER FUNCTIONS */
virtual void get_recognized_extensions(List<String> *p_extensions) const;
/* GLOBAL CLASSES */
virtual bool handles_global_class_type(const String &p_type) const;
virtual String get_global_class_name(const String &p_path, String *r_base_type = NULL, String *r_icon_path = NULL) const;
GDScriptLanguage();
~GDScriptLanguage();
};
class ResourceFormatLoaderGDScript : public ResourceFormatLoader {
public:
virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
virtual bool handles_type(const String &p_type) const;
virtual String get_resource_type(const String &p_path) const;
virtual void get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types = false);
};
class ResourceFormatSaverGDScript : public ResourceFormatSaver {
public:
virtual Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
virtual void get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const;
virtual bool recognize(const RES &p_resource) const;
};
#endif // GDSCRIPT_H
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