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godot/modules/gdscript/gd_script.h
Juan Linietsky 07e9741425 **WARNING BEFORE PULLING** 
This push changes the binary and XML formats and bumps the major version to 2.0. As such, files saved in this version WILL NO LONGER WORK IN PREVIOUS VERSIONS. This compatibility breakage with older versions was required in order to properly provide project refactoring tools.
If I were you, unless you are brave, I would wait a week or two before pulling, in case of bugs :)

Summary of Changes

-New Filesystem dock, with filesystem & tree view modes.
-New refactoring tools, to change or fix dependencies.
-Quick search dialog, to quickly search any file
2015-08-23 20:15:56 -03:00

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18 KiB
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/*************************************************************************/
/* gd_script.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 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. */
/*************************************************************************/
#ifndef GD_SCRIPT_H
#define GD_SCRIPT_H
#include "script_language.h"
#include "io/resource_loader.h"
#include "io/resource_saver.h"
#include "os/thread.h"
#include "pair.h"
class GDInstance;
class GDScript;
class GDFunction {
public:
enum Opcode {
OPCODE_OPERATOR,
OPCODE_EXTENDS_TEST,
OPCODE_SET,
OPCODE_GET,
OPCODE_SET_NAMED,
OPCODE_GET_NAMED,
OPCODE_ASSIGN,
OPCODE_ASSIGN_TRUE,
OPCODE_ASSIGN_FALSE,
OPCODE_CONSTRUCT, //only for basic types!!
OPCODE_CONSTRUCT_ARRAY,
OPCODE_CONSTRUCT_DICTIONARY,
OPCODE_CALL,
OPCODE_CALL_RETURN,
OPCODE_CALL_BUILT_IN,
OPCODE_CALL_SELF,
OPCODE_CALL_SELF_BASE,
OPCODE_YIELD,
OPCODE_YIELD_SIGNAL,
OPCODE_YIELD_RESUME,
OPCODE_JUMP,
OPCODE_JUMP_IF,
OPCODE_JUMP_IF_NOT,
OPCODE_JUMP_TO_DEF_ARGUMENT,
OPCODE_RETURN,
OPCODE_ITERATE_BEGIN,
OPCODE_ITERATE,
OPCODE_ASSERT,
OPCODE_LINE,
OPCODE_END
};
enum Address {
ADDR_BITS=24,
ADDR_MASK=((1<<ADDR_BITS)-1),
ADDR_TYPE_MASK=~ADDR_MASK,
ADDR_TYPE_SELF=0,
ADDR_TYPE_CLASS=1,
ADDR_TYPE_MEMBER=2,
ADDR_TYPE_CLASS_CONSTANT=3,
ADDR_TYPE_LOCAL_CONSTANT=4,
ADDR_TYPE_STACK=5,
ADDR_TYPE_STACK_VARIABLE=6,
ADDR_TYPE_GLOBAL=7,
ADDR_TYPE_NIL=8
};
struct StackDebug {
int line;
int pos;
bool added;
StringName identifier;
};
private:
friend class GDCompiler;
StringName source;
mutable Variant nil;
mutable Variant *_constants_ptr;
int _constant_count;
const StringName *_global_names_ptr;
int _global_names_count;
const int *_default_arg_ptr;
int _default_arg_count;
const int *_code_ptr;
int _code_size;
int _argument_count;
int _stack_size;
int _call_size;
int _initial_line;
bool _static;
GDScript *_script;
StringName name;
Vector<Variant> constants;
Vector<StringName> global_names;
Vector<int> default_arguments;
Vector<int> code;
#ifdef DEBUG_ENABLED
CharString func_cname;
const char*_func_cname;
#endif
#ifdef TOOLS_ENABLED
Vector<StringName> arg_names;
#endif
List<StackDebug> stack_debug;
_FORCE_INLINE_ Variant *_get_variant(int p_address,GDInstance *p_instance,GDScript *p_script,Variant &self,Variant *p_stack,String& r_error) const;
_FORCE_INLINE_ String _get_call_error(const Variant::CallError& p_err, const String& p_where,const Variant**argptrs) const;
public:
struct CallState {
GDInstance *instance;
Vector<uint8_t> stack;
int stack_size;
Variant self;
uint32_t alloca_size;
GDScript *_class;
int ip;
int line;
int defarg;
Variant result;
};
_FORCE_INLINE_ bool is_static() const { return _static; }
const int* get_code() const; //used for debug
int get_code_size() const;
Variant get_constant(int p_idx) const;
StringName get_global_name(int p_idx) const;
StringName get_name() const;
int get_max_stack_size() const;
int get_default_argument_count() const;
int get_default_argument_addr(int p_idx) const;
GDScript *get_script() const { return _script; }
void debug_get_stack_member_state(int p_line,List<Pair<StringName,int> > *r_stackvars) const;
_FORCE_INLINE_ bool is_empty() const { return _code_size==0; }
int get_argument_count() const { return _argument_count; }
StringName get_argument_name(int p_idx) const {
#ifdef TOOLS_ENABLED
ERR_FAIL_INDEX_V(p_idx,arg_names.size(),StringName());
return arg_names[p_idx];
#endif
return StringName();
}
Variant get_default_argument(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx,default_arguments.size(),Variant());
return default_arguments[p_idx];
}
Variant call(GDInstance *p_instance,const Variant **p_args, int p_argcount,Variant::CallError& r_err,CallState *p_state=NULL);
GDFunction();
};
class GDFunctionState : public Reference {
OBJ_TYPE(GDFunctionState,Reference);
friend class GDFunction;
GDFunction *function;
GDFunction::CallState state;
Variant _signal_callback(const Variant** p_args, int p_argcount, Variant::CallError& r_error);
protected:
static void _bind_methods();
public:
bool is_valid() const;
Variant resume(const Variant& p_arg=Variant());
GDFunctionState();
~GDFunctionState();
};
class GDNativeClass : public Reference {
OBJ_TYPE(GDNativeClass,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();
GDNativeClass(const StringName& p_name);
};
class GDScript : public Script {
OBJ_TYPE(GDScript,Script);
bool tool;
bool valid;
struct MemberInfo {
int index;
StringName setter;
StringName getter;
};
friend class GDInstance;
friend class GDFunction;
friend class GDCompiler;
friend class GDFunctions;
friend class GDScriptLanguage;
Variant _static_ref; //used for static call
Ref<GDNativeClass> 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,GDFunction> 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,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;
void _update_exports_values(Map<StringName,Variant>& values, List<PropertyInfo> &propnames);
#endif
Map<StringName,PropertyInfo> member_info;
GDFunction *initializer; //direct pointer to _init , faster to locate
int subclass_count;
Set<Object*> instances;
//exported members
String source;
String path;
String name;
GDInstance* _create_instance(const Variant** p_args,int p_argcount,Object *p_owner,bool p_isref);
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
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:
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 Map<StringName,GDFunction>& get_member_functions() const { return member_functions; }
const Ref<GDNativeClass>& get_native() const { return native; }
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,GDFunction>& 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 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 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();
virtual String get_node_type() const;
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;
virtual ScriptLanguage *get_language() const;
GDScript();
};
class GDInstance : public ScriptInstance {
friend class GDScript;
friend class GDFunction;
friend class GDFunctions;
Object *owner;
Ref<GDScript> script;
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 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 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);
virtual Ref<Script> get_script() const;
virtual ScriptLanguage *get_language();
void set_path(const String& p_path);
GDInstance();
~GDInstance();
};
class GDScriptLanguage : public ScriptLanguage {
static GDScriptLanguage *singleton;
Variant* _global_array;
Vector<Variant> global_array;
Map<StringName,int> globals;
struct CallLevel {
Variant *stack;
GDFunction *function;
GDInstance *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);
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(GDInstance *p_instance,GDFunction *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[_debug_call_stack_pos-i-1].line=_call_stack[i].line?*_call_stack[i].line:0;
csi[_debug_call_stack_pos-i-1].script=Ref<GDScript>(_call_stack[i].function->get_script());
}
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() { return 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_template(const String& p_class_name, const String& p_base_class_name) const;
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) const;
virtual Script *create_script() const;
virtual bool has_named_classes() const;
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 StringArray& p_args) const;
virtual Error complete_code(const String& p_code, const String& p_base_path, Object*p_owner,List<String>* r_options,String& r_call_hint);
virtual void auto_indent_code(String& p_code,int p_from_line,int p_to_line) const;
/* 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 void debug_get_globals(List<String> *p_locals, 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 frame();
virtual void get_public_functions(List<MethodInfo> *p_functions) const;
virtual void get_public_constants(List<Pair<String,Variant> > *p_constants) const;
/* LOADER FUNCTIONS */
virtual void get_recognized_extensions(List<String> *p_extensions) 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;
};
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 // GD_SCRIPT_H
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