godot/modules/gdscript/gdscript.cpp
Rémi Verschelde a7f49ac9a1 Update copyright statements to 2020
Happy new year to the wonderful Godot community!

We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.

Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
2020-01-01 11:16:22 +01:00

2285 lines
60 KiB
C++

/*************************************************************************/
/* gdscript.cpp */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#include "gdscript.h"
#include "core/core_string_names.h"
#include "core/engine.h"
#include "core/global_constants.h"
#include "core/io/file_access_encrypted.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/project_settings.h"
#include "gdscript_compiler.h"
///////////////////////////
GDScriptNativeClass::GDScriptNativeClass(const StringName &p_name) {
name = p_name;
}
bool GDScriptNativeClass::_get(const StringName &p_name, Variant &r_ret) const {
bool ok;
int v = ClassDB::get_integer_constant(name, p_name, &ok);
if (ok) {
r_ret = v;
return true;
} else {
return false;
}
}
void GDScriptNativeClass::_bind_methods() {
ClassDB::bind_method(D_METHOD("new"), &GDScriptNativeClass::_new);
}
Variant GDScriptNativeClass::_new() {
Object *o = instance();
ERR_FAIL_COND_V_MSG(!o, Variant(), "Class type: '" + String(name) + "' is not instantiable.");
Reference *ref = Object::cast_to<Reference>(o);
if (ref) {
return REF(ref);
} else {
return o;
}
}
Object *GDScriptNativeClass::instance() {
return ClassDB::instance(name);
}
GDScriptInstance *GDScript::_create_instance(const Variant **p_args, int p_argcount, Object *p_owner, bool p_isref, Variant::CallError &r_error) {
/* STEP 1, CREATE */
GDScriptInstance *instance = memnew(GDScriptInstance);
instance->base_ref = p_isref;
instance->members.resize(member_indices.size());
instance->script = Ref<GDScript>(this);
instance->owner = p_owner;
#ifdef DEBUG_ENABLED
//needed for hot reloading
for (Map<StringName, MemberInfo>::Element *E = member_indices.front(); E; E = E->next()) {
instance->member_indices_cache[E->key()] = E->get().index;
}
#endif
instance->owner->set_script_instance(instance);
/* STEP 2, INITIALIZE AND CONSTRUCT */
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
instances.insert(instance->owner);
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
initializer->call(instance, p_args, p_argcount, r_error);
if (r_error.error != Variant::CallError::CALL_OK) {
instance->script = Ref<GDScript>();
instance->owner->set_script_instance(NULL);
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
instances.erase(p_owner);
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
ERR_FAIL_COND_V(r_error.error != Variant::CallError::CALL_OK, NULL); //error constructing
}
//@TODO make thread safe
return instance;
}
Variant GDScript::_new(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
/* STEP 1, CREATE */
if (!valid) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
return Variant();
}
r_error.error = Variant::CallError::CALL_OK;
REF ref;
Object *owner = NULL;
GDScript *_baseptr = this;
while (_baseptr->_base) {
_baseptr = _baseptr->_base;
}
ERR_FAIL_COND_V(_baseptr->native.is_null(), Variant());
if (_baseptr->native.ptr()) {
owner = _baseptr->native->instance();
} else {
owner = memnew(Reference); //by default, no base means use reference
}
ERR_FAIL_COND_V_MSG(!owner, Variant(), "Can't inherit from a virtual class.");
Reference *r = Object::cast_to<Reference>(owner);
if (r) {
ref = REF(r);
}
GDScriptInstance *instance = _create_instance(p_args, p_argcount, owner, r != NULL, r_error);
if (!instance) {
if (ref.is_null()) {
memdelete(owner); //no owner, sorry
}
return Variant();
}
if (ref.is_valid()) {
return ref;
} else {
return owner;
}
}
bool GDScript::can_instance() const {
#ifdef TOOLS_ENABLED
return valid && (tool || ScriptServer::is_scripting_enabled());
#else
return valid;
#endif
}
Ref<Script> GDScript::get_base_script() const {
if (_base) {
return Ref<GDScript>(_base);
} else {
return Ref<Script>();
}
}
StringName GDScript::get_instance_base_type() const {
if (native.is_valid())
return native->get_name();
if (base.is_valid() && base->is_valid())
return base->get_instance_base_type();
return StringName();
}
struct _GDScriptMemberSort {
int index;
StringName name;
_FORCE_INLINE_ bool operator<(const _GDScriptMemberSort &p_member) const { return index < p_member.index; }
};
#ifdef TOOLS_ENABLED
void GDScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {
placeholders.erase(p_placeholder);
}
#endif
void GDScript::get_script_method_list(List<MethodInfo> *p_list) const {
const GDScript *current = this;
while (current) {
for (const Map<StringName, GDScriptFunction *>::Element *E = current->member_functions.front(); E; E = E->next()) {
GDScriptFunction *func = E->get();
MethodInfo mi;
mi.name = E->key();
for (int i = 0; i < func->get_argument_count(); i++) {
mi.arguments.push_back(func->get_argument_type(i));
}
mi.return_val = func->get_return_type();
p_list->push_back(mi);
}
current = current->_base;
}
}
void GDScript::get_script_property_list(List<PropertyInfo> *p_list) const {
const GDScript *sptr = this;
List<PropertyInfo> props;
while (sptr) {
Vector<_GDScriptMemberSort> msort;
for (Map<StringName, PropertyInfo>::Element *E = sptr->member_info.front(); E; E = E->next()) {
_GDScriptMemberSort ms;
ERR_CONTINUE(!sptr->member_indices.has(E->key()));
ms.index = sptr->member_indices[E->key()].index;
ms.name = E->key();
msort.push_back(ms);
}
msort.sort();
msort.invert();
for (int i = 0; i < msort.size(); i++) {
props.push_front(sptr->member_info[msort[i].name]);
}
sptr = sptr->_base;
}
for (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
p_list->push_back(E->get());
}
}
bool GDScript::has_method(const StringName &p_method) const {
return member_functions.has(p_method);
}
MethodInfo GDScript::get_method_info(const StringName &p_method) const {
const Map<StringName, GDScriptFunction *>::Element *E = member_functions.find(p_method);
if (!E)
return MethodInfo();
GDScriptFunction *func = E->get();
MethodInfo mi;
mi.name = E->key();
for (int i = 0; i < func->get_argument_count(); i++) {
mi.arguments.push_back(func->get_argument_type(i));
}
mi.return_val = func->get_return_type();
return mi;
}
bool GDScript::get_property_default_value(const StringName &p_property, Variant &r_value) const {
#ifdef TOOLS_ENABLED
const Map<StringName, Variant>::Element *E = member_default_values_cache.find(p_property);
if (E) {
r_value = E->get();
return true;
}
if (base_cache.is_valid()) {
return base_cache->get_property_default_value(p_property, r_value);
}
#endif
return false;
}
ScriptInstance *GDScript::instance_create(Object *p_this) {
GDScript *top = this;
while (top->_base)
top = top->_base;
if (top->native.is_valid()) {
if (!ClassDB::is_parent_class(p_this->get_class_name(), top->native->get_name())) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(), 0, "Script inherits from native type '" + String(top->native->get_name()) + "', so it can't be instanced in object of type: '" + p_this->get_class() + "'");
}
ERR_FAIL_V_MSG(NULL, "Script inherits from native type '" + String(top->native->get_name()) + "', so it can't be instanced in object of type '" + p_this->get_class() + "'" + ".");
}
}
Variant::CallError unchecked_error;
return _create_instance(NULL, 0, p_this, Object::cast_to<Reference>(p_this) != NULL, unchecked_error);
}
PlaceHolderScriptInstance *GDScript::placeholder_instance_create(Object *p_this) {
#ifdef TOOLS_ENABLED
PlaceHolderScriptInstance *si = memnew(PlaceHolderScriptInstance(GDScriptLanguage::get_singleton(), Ref<Script>(this), p_this));
placeholders.insert(si);
_update_exports();
return si;
#else
return NULL;
#endif
}
bool GDScript::instance_has(const Object *p_this) const {
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
bool hasit = instances.has((Object *)p_this);
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
return hasit;
}
bool GDScript::has_source_code() const {
return source != "";
}
String GDScript::get_source_code() const {
return source;
}
void GDScript::set_source_code(const String &p_code) {
if (source == p_code)
return;
source = p_code;
#ifdef TOOLS_ENABLED
source_changed_cache = true;
#endif
}
#ifdef TOOLS_ENABLED
void GDScript::_update_exports_values(Map<StringName, Variant> &values, List<PropertyInfo> &propnames) {
if (base_cache.is_valid()) {
base_cache->_update_exports_values(values, propnames);
}
for (Map<StringName, Variant>::Element *E = member_default_values_cache.front(); E; E = E->next()) {
values[E->key()] = E->get();
}
for (List<PropertyInfo>::Element *E = members_cache.front(); E; E = E->next()) {
propnames.push_back(E->get());
}
}
#endif
bool GDScript::_update_exports() {
#ifdef TOOLS_ENABLED
bool changed = false;
if (source_changed_cache) {
source_changed_cache = false;
changed = true;
String basedir = path;
if (basedir == "")
basedir = get_path();
if (basedir != "")
basedir = basedir.get_base_dir();
GDScriptParser parser;
Error err = parser.parse(source, basedir, true, path);
if (err == OK) {
const GDScriptParser::Node *root = parser.get_parse_tree();
ERR_FAIL_COND_V(root->type != GDScriptParser::Node::TYPE_CLASS, false);
const GDScriptParser::ClassNode *c = static_cast<const GDScriptParser::ClassNode *>(root);
if (base_cache.is_valid()) {
base_cache->inheriters_cache.erase(get_instance_id());
base_cache = Ref<GDScript>();
}
if (c->extends_used) {
String path = "";
if (String(c->extends_file) != "" && String(c->extends_file) != get_path()) {
path = c->extends_file;
if (path.is_rel_path()) {
String base = get_path();
if (base == "" || base.is_rel_path()) {
ERR_PRINT(("Could not resolve relative path for parent class: " + path).utf8().get_data());
} else {
path = base.get_base_dir().plus_file(path);
}
}
} else if (c->extends_class.size() != 0) {
String base = c->extends_class[0];
if (ScriptServer::is_global_class(base))
path = ScriptServer::get_global_class_path(base);
}
if (path != "") {
if (path != get_path()) {
Ref<GDScript> bf = ResourceLoader::load(path);
if (bf.is_valid()) {
base_cache = bf;
bf->inheriters_cache.insert(get_instance_id());
}
} else {
ERR_PRINT(("Path extending itself in " + path).utf8().get_data());
}
}
}
members_cache.clear();
member_default_values_cache.clear();
for (int i = 0; i < c->variables.size(); i++) {
if (c->variables[i]._export.type == Variant::NIL)
continue;
members_cache.push_back(c->variables[i]._export);
member_default_values_cache[c->variables[i].identifier] = c->variables[i].default_value;
}
_signals.clear();
for (int i = 0; i < c->_signals.size(); i++) {
_signals[c->_signals[i].name] = c->_signals[i].arguments;
}
} else {
placeholder_fallback_enabled = true;
return false;
}
} else if (placeholder_fallback_enabled) {
return false;
}
placeholder_fallback_enabled = false;
if (base_cache.is_valid() && base_cache->is_valid()) {
if (base_cache->_update_exports()) {
changed = true;
}
}
if (placeholders.size()) { //hm :(
// update placeholders if any
Map<StringName, Variant> values;
List<PropertyInfo> propnames;
_update_exports_values(values, propnames);
for (Set<PlaceHolderScriptInstance *>::Element *E = placeholders.front(); E; E = E->next()) {
E->get()->update(propnames, values);
}
}
return changed;
#else
return false;
#endif
}
void GDScript::update_exports() {
#ifdef TOOLS_ENABLED
_update_exports();
Set<ObjectID> copy = inheriters_cache; //might get modified
for (Set<ObjectID>::Element *E = copy.front(); E; E = E->next()) {
Object *id = ObjectDB::get_instance(E->get());
GDScript *s = Object::cast_to<GDScript>(id);
if (!s)
continue;
s->update_exports();
}
#endif
}
void GDScript::_set_subclass_path(Ref<GDScript> &p_sc, const String &p_path) {
p_sc->path = p_path;
for (Map<StringName, Ref<GDScript> >::Element *E = p_sc->subclasses.front(); E; E = E->next()) {
_set_subclass_path(E->get(), p_path);
}
}
Error GDScript::reload(bool p_keep_state) {
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
bool has_instances = instances.size();
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
ERR_FAIL_COND_V(!p_keep_state && has_instances, ERR_ALREADY_IN_USE);
String basedir = path;
if (basedir == "")
basedir = get_path();
if (basedir != "")
basedir = basedir.get_base_dir();
if (source.find("%BASE%") != -1) {
//loading a template, don't parse
return OK;
}
valid = false;
GDScriptParser parser;
Error err = parser.parse(source, basedir, false, path);
if (err) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(), parser.get_error_line(), "Parser Error: " + parser.get_error());
}
_err_print_error("GDScript::reload", path.empty() ? "built-in" : (const char *)path.utf8().get_data(), parser.get_error_line(), ("Parse Error: " + parser.get_error()).utf8().get_data(), ERR_HANDLER_SCRIPT);
ERR_FAIL_V(ERR_PARSE_ERROR);
}
bool can_run = ScriptServer::is_scripting_enabled() || parser.is_tool_script();
GDScriptCompiler compiler;
err = compiler.compile(&parser, this, p_keep_state);
if (err) {
if (can_run) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(), compiler.get_error_line(), "Parser Error: " + compiler.get_error());
}
_err_print_error("GDScript::reload", path.empty() ? "built-in" : (const char *)path.utf8().get_data(), compiler.get_error_line(), ("Compile Error: " + compiler.get_error()).utf8().get_data(), ERR_HANDLER_SCRIPT);
ERR_FAIL_V(ERR_COMPILATION_FAILED);
} else {
return err;
}
}
#ifdef DEBUG_ENABLED
for (const List<GDScriptWarning>::Element *E = parser.get_warnings().front(); E; E = E->next()) {
const GDScriptWarning &warning = E->get();
if (ScriptDebugger::get_singleton()) {
Vector<ScriptLanguage::StackInfo> si;
ScriptDebugger::get_singleton()->send_error("", get_path(), warning.line, warning.get_name(), warning.get_message(), ERR_HANDLER_WARNING, si);
}
}
#endif
valid = true;
for (Map<StringName, Ref<GDScript> >::Element *E = subclasses.front(); E; E = E->next()) {
_set_subclass_path(E->get(), path);
}
return OK;
}
ScriptLanguage *GDScript::get_language() const {
return GDScriptLanguage::get_singleton();
}
void GDScript::get_constants(Map<StringName, Variant> *p_constants) {
if (p_constants) {
for (Map<StringName, Variant>::Element *E = constants.front(); E; E = E->next()) {
(*p_constants)[E->key()] = E->value();
}
}
}
void GDScript::get_members(Set<StringName> *p_members) {
if (p_members) {
for (Set<StringName>::Element *E = members.front(); E; E = E->next()) {
p_members->insert(E->get());
}
}
}
Variant GDScript::call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
GDScript *top = this;
while (top) {
Map<StringName, GDScriptFunction *>::Element *E = top->member_functions.find(p_method);
if (E) {
ERR_FAIL_COND_V_MSG(!E->get()->is_static(), Variant(), "Can't call non-static function '" + String(p_method) + "' in script.");
return E->get()->call(NULL, p_args, p_argcount, r_error);
}
top = top->_base;
}
//none found, regular
return Script::call(p_method, p_args, p_argcount, r_error);
}
bool GDScript::_get(const StringName &p_name, Variant &r_ret) const {
{
const GDScript *top = this;
while (top) {
{
const Map<StringName, Variant>::Element *E = top->constants.find(p_name);
if (E) {
r_ret = E->get();
return true;
}
}
{
const Map<StringName, Ref<GDScript> >::Element *E = subclasses.find(p_name);
if (E) {
r_ret = E->get();
return true;
}
}
top = top->_base;
}
if (p_name == GDScriptLanguage::get_singleton()->strings._script_source) {
r_ret = get_source_code();
return true;
}
}
return false;
}
bool GDScript::_set(const StringName &p_name, const Variant &p_value) {
if (p_name == GDScriptLanguage::get_singleton()->strings._script_source) {
set_source_code(p_value);
reload();
} else
return false;
return true;
}
void GDScript::_get_property_list(List<PropertyInfo> *p_properties) const {
p_properties->push_back(PropertyInfo(Variant::STRING, "script/source", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
}
void GDScript::_bind_methods() {
ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "new", &GDScript::_new, MethodInfo("new"));
ClassDB::bind_method(D_METHOD("get_as_byte_code"), &GDScript::get_as_byte_code);
}
Vector<uint8_t> GDScript::get_as_byte_code() const {
GDScriptTokenizerBuffer tokenizer;
return tokenizer.parse_code_string(source);
};
Error GDScript::load_byte_code(const String &p_path) {
Vector<uint8_t> bytecode;
if (p_path.ends_with("gde")) {
FileAccess *fa = FileAccess::open(p_path, FileAccess::READ);
ERR_FAIL_COND_V(!fa, ERR_CANT_OPEN);
FileAccessEncrypted *fae = memnew(FileAccessEncrypted);
ERR_FAIL_COND_V(!fae, ERR_CANT_OPEN);
Vector<uint8_t> key;
key.resize(32);
for (int i = 0; i < key.size(); i++) {
key.write[i] = script_encryption_key[i];
}
Error err = fae->open_and_parse(fa, key, FileAccessEncrypted::MODE_READ);
if (err) {
fa->close();
memdelete(fa);
memdelete(fae);
ERR_FAIL_COND_V(err, err);
}
bytecode.resize(fae->get_len());
fae->get_buffer(bytecode.ptrw(), bytecode.size());
fae->close();
memdelete(fae);
} else {
bytecode = FileAccess::get_file_as_array(p_path);
}
ERR_FAIL_COND_V(bytecode.size() == 0, ERR_PARSE_ERROR);
path = p_path;
String basedir = path;
if (basedir == "")
basedir = get_path();
if (basedir != "")
basedir = basedir.get_base_dir();
valid = false;
GDScriptParser parser;
Error err = parser.parse_bytecode(bytecode, basedir, get_path());
if (err) {
_err_print_error("GDScript::load_byte_code", path.empty() ? "built-in" : (const char *)path.utf8().get_data(), parser.get_error_line(), ("Parse Error: " + parser.get_error()).utf8().get_data(), ERR_HANDLER_SCRIPT);
ERR_FAIL_V(ERR_PARSE_ERROR);
}
GDScriptCompiler compiler;
err = compiler.compile(&parser, this);
if (err) {
_err_print_error("GDScript::load_byte_code", path.empty() ? "built-in" : (const char *)path.utf8().get_data(), compiler.get_error_line(), ("Compile Error: " + compiler.get_error()).utf8().get_data(), ERR_HANDLER_SCRIPT);
ERR_FAIL_V(ERR_COMPILATION_FAILED);
}
valid = true;
for (Map<StringName, Ref<GDScript> >::Element *E = subclasses.front(); E; E = E->next()) {
_set_subclass_path(E->get(), path);
}
return OK;
}
Error GDScript::load_source_code(const String &p_path) {
PoolVector<uint8_t> sourcef;
Error err;
FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
if (err) {
ERR_FAIL_COND_V(err, err);
}
int len = f->get_len();
sourcef.resize(len + 1);
PoolVector<uint8_t>::Write w = sourcef.write();
int r = f->get_buffer(w.ptr(), len);
f->close();
memdelete(f);
ERR_FAIL_COND_V(r != len, ERR_CANT_OPEN);
w[len] = 0;
String s;
if (s.parse_utf8((const char *)w.ptr())) {
ERR_FAIL_V_MSG(ERR_INVALID_DATA, "Script '" + p_path + "' contains invalid unicode (UTF-8), so it was not loaded. Please ensure that scripts are saved in valid UTF-8 unicode.");
}
source = s;
#ifdef TOOLS_ENABLED
source_changed_cache = true;
#endif
path = p_path;
return OK;
}
const Map<StringName, GDScriptFunction *> &GDScript::debug_get_member_functions() const {
return member_functions;
}
StringName GDScript::debug_get_member_by_index(int p_idx) const {
for (const Map<StringName, MemberInfo>::Element *E = member_indices.front(); E; E = E->next()) {
if (E->get().index == p_idx)
return E->key();
}
return "<error>";
}
Ref<GDScript> GDScript::get_base() const {
return base;
}
bool GDScript::has_script_signal(const StringName &p_signal) const {
if (_signals.has(p_signal))
return true;
if (base.is_valid()) {
return base->has_script_signal(p_signal);
}
#ifdef TOOLS_ENABLED
else if (base_cache.is_valid()) {
return base_cache->has_script_signal(p_signal);
}
#endif
return false;
}
void GDScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
for (const Map<StringName, Vector<StringName> >::Element *E = _signals.front(); E; E = E->next()) {
MethodInfo mi;
mi.name = E->key();
for (int i = 0; i < E->get().size(); i++) {
PropertyInfo arg;
arg.name = E->get()[i];
mi.arguments.push_back(arg);
}
r_signals->push_back(mi);
}
if (base.is_valid()) {
base->get_script_signal_list(r_signals);
}
#ifdef TOOLS_ENABLED
else if (base_cache.is_valid()) {
base_cache->get_script_signal_list(r_signals);
}
#endif
}
GDScript::GDScript() :
script_list(this) {
_static_ref = this;
valid = false;
subclass_count = 0;
initializer = NULL;
_base = NULL;
_owner = NULL;
tool = false;
#ifdef TOOLS_ENABLED
source_changed_cache = false;
placeholder_fallback_enabled = false;
#endif
#ifdef DEBUG_ENABLED
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->lock();
}
GDScriptLanguage::get_singleton()->script_list.add(&script_list);
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->unlock();
}
#endif
}
GDScript::~GDScript() {
for (Map<StringName, GDScriptFunction *>::Element *E = member_functions.front(); E; E = E->next()) {
memdelete(E->get());
}
for (Map<StringName, Ref<GDScript> >::Element *E = subclasses.front(); E; E = E->next()) {
E->get()->_owner = NULL; //bye, you are no longer owned cause I died
}
#ifdef DEBUG_ENABLED
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->lock();
}
GDScriptLanguage::get_singleton()->script_list.remove(&script_list);
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->unlock();
}
#endif
}
//////////////////////////////
// INSTANCE //
//////////////////////////////
bool GDScriptInstance::set(const StringName &p_name, const Variant &p_value) {
//member
{
const Map<StringName, GDScript::MemberInfo>::Element *E = script->member_indices.find(p_name);
if (E) {
const GDScript::MemberInfo *member = &E->get();
if (member->setter) {
const Variant *val = &p_value;
Variant::CallError err;
call(member->setter, &val, 1, err);
if (err.error == Variant::CallError::CALL_OK) {
return true; //function exists, call was successful
}
} else {
if (!member->data_type.is_type(p_value)) {
// Try conversion
Variant::CallError ce;
const Variant *value = &p_value;
Variant converted = Variant::construct(member->data_type.builtin_type, &value, 1, ce);
if (ce.error == Variant::CallError::CALL_OK) {
members.write[member->index] = converted;
return true;
} else {
return false;
}
} else {
members.write[member->index] = p_value;
}
}
return true;
}
}
GDScript *sptr = script.ptr();
while (sptr) {
Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._set);
if (E) {
Variant name = p_name;
const Variant *args[2] = { &name, &p_value };
Variant::CallError err;
Variant ret = E->get()->call(this, (const Variant **)args, 2, err);
if (err.error == Variant::CallError::CALL_OK && ret.get_type() == Variant::BOOL && ret.operator bool())
return true;
}
sptr = sptr->_base;
}
return false;
}
bool GDScriptInstance::get(const StringName &p_name, Variant &r_ret) const {
const GDScript *sptr = script.ptr();
while (sptr) {
{
const Map<StringName, GDScript::MemberInfo>::Element *E = script->member_indices.find(p_name);
if (E) {
if (E->get().getter) {
Variant::CallError err;
r_ret = const_cast<GDScriptInstance *>(this)->call(E->get().getter, NULL, 0, err);
if (err.error == Variant::CallError::CALL_OK) {
return true;
}
}
r_ret = members[E->get().index];
return true; //index found
}
}
{
const GDScript *sl = sptr;
while (sl) {
const Map<StringName, Variant>::Element *E = sl->constants.find(p_name);
if (E) {
r_ret = E->get();
return true; //index found
}
sl = sl->_base;
}
}
{
const Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._get);
if (E) {
Variant name = p_name;
const Variant *args[1] = { &name };
Variant::CallError err;
Variant ret = const_cast<GDScriptFunction *>(E->get())->call(const_cast<GDScriptInstance *>(this), (const Variant **)args, 1, err);
if (err.error == Variant::CallError::CALL_OK && ret.get_type() != Variant::NIL) {
r_ret = ret;
return true;
}
}
}
sptr = sptr->_base;
}
return false;
}
Variant::Type GDScriptInstance::get_property_type(const StringName &p_name, bool *r_is_valid) const {
const GDScript *sptr = script.ptr();
while (sptr) {
if (sptr->member_info.has(p_name)) {
if (r_is_valid)
*r_is_valid = true;
return sptr->member_info[p_name].type;
}
sptr = sptr->_base;
}
if (r_is_valid)
*r_is_valid = false;
return Variant::NIL;
}
void GDScriptInstance::get_property_list(List<PropertyInfo> *p_properties) const {
// exported members, not done yet!
const GDScript *sptr = script.ptr();
List<PropertyInfo> props;
while (sptr) {
const Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._get_property_list);
if (E) {
Variant::CallError err;
Variant ret = const_cast<GDScriptFunction *>(E->get())->call(const_cast<GDScriptInstance *>(this), NULL, 0, err);
if (err.error == Variant::CallError::CALL_OK) {
ERR_FAIL_COND_MSG(ret.get_type() != Variant::ARRAY, "Wrong type for _get_property_list, must be an array of dictionaries.");
Array arr = ret;
for (int i = 0; i < arr.size(); i++) {
Dictionary d = arr[i];
ERR_CONTINUE(!d.has("name"));
ERR_CONTINUE(!d.has("type"));
PropertyInfo pinfo;
pinfo.type = Variant::Type(d["type"].operator int());
ERR_CONTINUE(pinfo.type < 0 || pinfo.type >= Variant::VARIANT_MAX);
pinfo.name = d["name"];
ERR_CONTINUE(pinfo.name == "");
if (d.has("hint"))
pinfo.hint = PropertyHint(d["hint"].operator int());
if (d.has("hint_string"))
pinfo.hint_string = d["hint_string"];
if (d.has("usage"))
pinfo.usage = d["usage"];
props.push_back(pinfo);
}
}
}
//instance a fake script for editing the values
Vector<_GDScriptMemberSort> msort;
for (Map<StringName, PropertyInfo>::Element *F = sptr->member_info.front(); F; F = F->next()) {
_GDScriptMemberSort ms;
ERR_CONTINUE(!sptr->member_indices.has(F->key()));
ms.index = sptr->member_indices[F->key()].index;
ms.name = F->key();
msort.push_back(ms);
}
msort.sort();
msort.invert();
for (int i = 0; i < msort.size(); i++) {
props.push_front(sptr->member_info[msort[i].name]);
}
sptr = sptr->_base;
}
for (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
p_properties->push_back(E->get());
}
}
void GDScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
const GDScript *sptr = script.ptr();
while (sptr) {
for (Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.front(); E; E = E->next()) {
MethodInfo mi;
mi.name = E->key();
mi.flags |= METHOD_FLAG_FROM_SCRIPT;
for (int i = 0; i < E->get()->get_argument_count(); i++)
mi.arguments.push_back(PropertyInfo(Variant::NIL, "arg" + itos(i)));
p_list->push_back(mi);
}
sptr = sptr->_base;
}
}
bool GDScriptInstance::has_method(const StringName &p_method) const {
const GDScript *sptr = script.ptr();
while (sptr) {
const Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(p_method);
if (E)
return true;
sptr = sptr->_base;
}
return false;
}
Variant GDScriptInstance::call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
GDScript *sptr = script.ptr();
while (sptr) {
Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(p_method);
if (E) {
return E->get()->call(this, p_args, p_argcount, r_error);
}
sptr = sptr->_base;
}
r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
return Variant();
}
void GDScriptInstance::call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount) {
GDScript *sptr = script.ptr();
Variant::CallError ce;
while (sptr) {
Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(p_method);
if (E) {
E->get()->call(this, p_args, p_argcount, ce);
}
sptr = sptr->_base;
}
}
void GDScriptInstance::_ml_call_reversed(GDScript *sptr, const StringName &p_method, const Variant **p_args, int p_argcount) {
if (sptr->_base)
_ml_call_reversed(sptr->_base, p_method, p_args, p_argcount);
Variant::CallError ce;
Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(p_method);
if (E) {
E->get()->call(this, p_args, p_argcount, ce);
}
}
void GDScriptInstance::call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount) {
if (script.ptr()) {
_ml_call_reversed(script.ptr(), p_method, p_args, p_argcount);
}
}
void GDScriptInstance::notification(int p_notification) {
//notification is not virtual, it gets called at ALL levels just like in C.
Variant value = p_notification;
const Variant *args[1] = { &value };
GDScript *sptr = script.ptr();
while (sptr) {
Map<StringName, GDScriptFunction *>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._notification);
if (E) {
Variant::CallError err;
E->get()->call(this, args, 1, err);
if (err.error != Variant::CallError::CALL_OK) {
//print error about notification call
}
}
sptr = sptr->_base;
}
}
String GDScriptInstance::to_string(bool *r_valid) {
if (has_method(CoreStringNames::get_singleton()->_to_string)) {
Variant::CallError ce;
Variant ret = call(CoreStringNames::get_singleton()->_to_string, NULL, 0, ce);
if (ce.error == Variant::CallError::CALL_OK) {
if (ret.get_type() != Variant::STRING) {
if (r_valid)
*r_valid = false;
ERR_FAIL_V_MSG(String(), "Wrong type for " + CoreStringNames::get_singleton()->_to_string + ", must be a String.");
}
if (r_valid)
*r_valid = true;
return ret.operator String();
}
}
if (r_valid)
*r_valid = false;
return String();
}
Ref<Script> GDScriptInstance::get_script() const {
return script;
}
ScriptLanguage *GDScriptInstance::get_language() {
return GDScriptLanguage::get_singleton();
}
MultiplayerAPI::RPCMode GDScriptInstance::get_rpc_mode(const StringName &p_method) const {
const GDScript *cscript = script.ptr();
while (cscript) {
const Map<StringName, GDScriptFunction *>::Element *E = cscript->member_functions.find(p_method);
if (E) {
if (E->get()->get_rpc_mode() != MultiplayerAPI::RPC_MODE_DISABLED) {
return E->get()->get_rpc_mode();
}
}
cscript = cscript->_base;
}
return MultiplayerAPI::RPC_MODE_DISABLED;
}
MultiplayerAPI::RPCMode GDScriptInstance::get_rset_mode(const StringName &p_variable) const {
const GDScript *cscript = script.ptr();
while (cscript) {
const Map<StringName, GDScript::MemberInfo>::Element *E = cscript->member_indices.find(p_variable);
if (E) {
if (E->get().rpc_mode) {
return E->get().rpc_mode;
}
}
cscript = cscript->_base;
}
return MultiplayerAPI::RPC_MODE_DISABLED;
}
void GDScriptInstance::reload_members() {
#ifdef DEBUG_ENABLED
members.resize(script->member_indices.size()); //resize
Vector<Variant> new_members;
new_members.resize(script->member_indices.size());
//pass the values to the new indices
for (Map<StringName, GDScript::MemberInfo>::Element *E = script->member_indices.front(); E; E = E->next()) {
if (member_indices_cache.has(E->key())) {
Variant value = members[member_indices_cache[E->key()]];
new_members.write[E->get().index] = value;
}
}
//apply
members = new_members;
//pass the values to the new indices
member_indices_cache.clear();
for (Map<StringName, GDScript::MemberInfo>::Element *E = script->member_indices.front(); E; E = E->next()) {
member_indices_cache[E->key()] = E->get().index;
}
#endif
}
GDScriptInstance::GDScriptInstance() {
owner = NULL;
base_ref = false;
}
GDScriptInstance::~GDScriptInstance() {
if (script.is_valid() && owner) {
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
script->instances.erase(owner);
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
}
}
/************* SCRIPT LANGUAGE **************/
GDScriptLanguage *GDScriptLanguage::singleton = NULL;
String GDScriptLanguage::get_name() const {
return "GDScript";
}
/* LANGUAGE FUNCTIONS */
void GDScriptLanguage::_add_global(const StringName &p_name, const Variant &p_value) {
if (globals.has(p_name)) {
//overwrite existing
global_array.write[globals[p_name]] = p_value;
return;
}
globals[p_name] = global_array.size();
global_array.push_back(p_value);
_global_array = global_array.ptrw();
}
void GDScriptLanguage::add_global_constant(const StringName &p_variable, const Variant &p_value) {
_add_global(p_variable, p_value);
}
void GDScriptLanguage::add_named_global_constant(const StringName &p_name, const Variant &p_value) {
named_globals[p_name] = p_value;
}
void GDScriptLanguage::remove_named_global_constant(const StringName &p_name) {
ERR_FAIL_COND(!named_globals.has(p_name));
named_globals.erase(p_name);
}
void GDScriptLanguage::init() {
//populate global constants
int gcc = GlobalConstants::get_global_constant_count();
for (int i = 0; i < gcc; i++) {
_add_global(StaticCString::create(GlobalConstants::get_global_constant_name(i)), GlobalConstants::get_global_constant_value(i));
}
_add_global(StaticCString::create("PI"), Math_PI);
_add_global(StaticCString::create("TAU"), Math_TAU);
_add_global(StaticCString::create("INF"), Math_INF);
_add_global(StaticCString::create("NAN"), Math_NAN);
//populate native classes
List<StringName> class_list;
ClassDB::get_class_list(&class_list);
for (List<StringName>::Element *E = class_list.front(); E; E = E->next()) {
StringName n = E->get();
String s = String(n);
if (s.begins_with("_"))
n = s.substr(1, s.length());
if (globals.has(n))
continue;
Ref<GDScriptNativeClass> nc = memnew(GDScriptNativeClass(E->get()));
_add_global(n, nc);
}
//populate singletons
List<Engine::Singleton> singletons;
Engine::get_singleton()->get_singletons(&singletons);
for (List<Engine::Singleton>::Element *E = singletons.front(); E; E = E->next()) {
_add_global(E->get().name, E->get().ptr);
}
}
String GDScriptLanguage::get_type() const {
return "GDScript";
}
String GDScriptLanguage::get_extension() const {
return "gd";
}
Error GDScriptLanguage::execute_file(const String &p_path) {
// ??
return OK;
}
void GDScriptLanguage::finish() {
}
void GDScriptLanguage::profiling_start() {
#ifdef DEBUG_ENABLED
if (lock) {
lock->lock();
}
SelfList<GDScriptFunction> *elem = function_list.first();
while (elem) {
elem->self()->profile.call_count = 0;
elem->self()->profile.self_time = 0;
elem->self()->profile.total_time = 0;
elem->self()->profile.frame_call_count = 0;
elem->self()->profile.frame_self_time = 0;
elem->self()->profile.frame_total_time = 0;
elem->self()->profile.last_frame_call_count = 0;
elem->self()->profile.last_frame_self_time = 0;
elem->self()->profile.last_frame_total_time = 0;
elem = elem->next();
}
profiling = true;
if (lock) {
lock->unlock();
}
#endif
}
void GDScriptLanguage::profiling_stop() {
#ifdef DEBUG_ENABLED
if (lock) {
lock->lock();
}
profiling = false;
if (lock) {
lock->unlock();
}
#endif
}
int GDScriptLanguage::profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max) {
int current = 0;
#ifdef DEBUG_ENABLED
if (lock) {
lock->lock();
}
SelfList<GDScriptFunction> *elem = function_list.first();
while (elem) {
if (current >= p_info_max)
break;
p_info_arr[current].call_count = elem->self()->profile.call_count;
p_info_arr[current].self_time = elem->self()->profile.self_time;
p_info_arr[current].total_time = elem->self()->profile.total_time;
p_info_arr[current].signature = elem->self()->profile.signature;
elem = elem->next();
current++;
}
if (lock) {
lock->unlock();
}
#endif
return current;
}
int GDScriptLanguage::profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max) {
int current = 0;
#ifdef DEBUG_ENABLED
if (lock) {
lock->lock();
}
SelfList<GDScriptFunction> *elem = function_list.first();
while (elem) {
if (current >= p_info_max)
break;
if (elem->self()->profile.last_frame_call_count > 0) {
p_info_arr[current].call_count = elem->self()->profile.last_frame_call_count;
p_info_arr[current].self_time = elem->self()->profile.last_frame_self_time;
p_info_arr[current].total_time = elem->self()->profile.last_frame_total_time;
p_info_arr[current].signature = elem->self()->profile.signature;
current++;
}
elem = elem->next();
}
if (lock) {
lock->unlock();
}
#endif
return current;
}
struct GDScriptDepSort {
//must support sorting so inheritance works properly (parent must be reloaded first)
bool operator()(const Ref<GDScript> &A, const Ref<GDScript> &B) const {
if (A == B)
return false; //shouldn't happen but..
const GDScript *I = B->get_base().ptr();
while (I) {
if (I == A.ptr()) {
// A is a base of B
return true;
}
I = I->get_base().ptr();
}
return false; //not a base
}
};
void GDScriptLanguage::reload_all_scripts() {
#ifdef DEBUG_ENABLED
print_verbose("GDScript: Reloading all scripts");
if (lock) {
lock->lock();
}
List<Ref<GDScript> > scripts;
SelfList<GDScript> *elem = script_list.first();
while (elem) {
if (elem->self()->get_path().is_resource_file()) {
print_verbose("GDScript: Found: " + elem->self()->get_path());
scripts.push_back(Ref<GDScript>(elem->self())); //cast to gdscript to avoid being erased by accident
}
elem = elem->next();
}
if (lock) {
lock->unlock();
}
//as scripts are going to be reloaded, must proceed without locking here
scripts.sort_custom<GDScriptDepSort>(); //update in inheritance dependency order
for (List<Ref<GDScript> >::Element *E = scripts.front(); E; E = E->next()) {
print_verbose("GDScript: Reloading: " + E->get()->get_path());
E->get()->load_source_code(E->get()->get_path());
E->get()->reload(true);
}
#endif
}
void GDScriptLanguage::reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload) {
#ifdef DEBUG_ENABLED
if (lock) {
lock->lock();
}
List<Ref<GDScript> > scripts;
SelfList<GDScript> *elem = script_list.first();
while (elem) {
if (elem->self()->get_path().is_resource_file()) {
scripts.push_back(Ref<GDScript>(elem->self())); //cast to gdscript to avoid being erased by accident
}
elem = elem->next();
}
if (lock) {
lock->unlock();
}
//when someone asks you why dynamically typed languages are easier to write....
Map<Ref<GDScript>, Map<ObjectID, List<Pair<StringName, Variant> > > > to_reload;
//as scripts are going to be reloaded, must proceed without locking here
scripts.sort_custom<GDScriptDepSort>(); //update in inheritance dependency order
for (List<Ref<GDScript> >::Element *E = scripts.front(); E; E = E->next()) {
bool reload = E->get() == p_script || to_reload.has(E->get()->get_base());
if (!reload)
continue;
to_reload.insert(E->get(), Map<ObjectID, List<Pair<StringName, Variant> > >());
if (!p_soft_reload) {
//save state and remove script from instances
Map<ObjectID, List<Pair<StringName, Variant> > > &map = to_reload[E->get()];
while (E->get()->instances.front()) {
Object *obj = E->get()->instances.front()->get();
//save instance info
List<Pair<StringName, Variant> > state;
if (obj->get_script_instance()) {
obj->get_script_instance()->get_property_state(state);
map[obj->get_instance_id()] = state;
obj->set_script(RefPtr());
}
}
//same thing for placeholders
#ifdef TOOLS_ENABLED
while (E->get()->placeholders.size()) {
Object *obj = E->get()->placeholders.front()->get()->get_owner();
//save instance info
if (obj->get_script_instance()) {
map.insert(obj->get_instance_id(), List<Pair<StringName, Variant> >());
List<Pair<StringName, Variant> > &state = map[obj->get_instance_id()];
obj->get_script_instance()->get_property_state(state);
obj->set_script(RefPtr());
} else {
// no instance found. Let's remove it so we don't loop forever
E->get()->placeholders.erase(E->get()->placeholders.front()->get());
}
}
#endif
for (Map<ObjectID, List<Pair<StringName, Variant> > >::Element *F = E->get()->pending_reload_state.front(); F; F = F->next()) {
map[F->key()] = F->get(); //pending to reload, use this one instead
}
}
}
for (Map<Ref<GDScript>, Map<ObjectID, List<Pair<StringName, Variant> > > >::Element *E = to_reload.front(); E; E = E->next()) {
Ref<GDScript> scr = E->key();
scr->reload(p_soft_reload);
//restore state if saved
for (Map<ObjectID, List<Pair<StringName, Variant> > >::Element *F = E->get().front(); F; F = F->next()) {
List<Pair<StringName, Variant> > &saved_state = F->get();
Object *obj = ObjectDB::get_instance(F->key());
if (!obj)
continue;
if (!p_soft_reload) {
//clear it just in case (may be a pending reload state)
obj->set_script(RefPtr());
}
obj->set_script(scr.get_ref_ptr());
ScriptInstance *script_instance = obj->get_script_instance();
if (!script_instance) {
//failed, save reload state for next time if not saved
if (!scr->pending_reload_state.has(obj->get_instance_id())) {
scr->pending_reload_state[obj->get_instance_id()] = saved_state;
}
continue;
}
if (script_instance->is_placeholder() && scr->is_placeholder_fallback_enabled()) {
PlaceHolderScriptInstance *placeholder = static_cast<PlaceHolderScriptInstance *>(script_instance);
for (List<Pair<StringName, Variant> >::Element *G = saved_state.front(); G; G = G->next()) {
placeholder->property_set_fallback(G->get().first, G->get().second);
}
} else {
for (List<Pair<StringName, Variant> >::Element *G = saved_state.front(); G; G = G->next()) {
script_instance->set(G->get().first, G->get().second);
}
}
scr->pending_reload_state.erase(obj->get_instance_id()); //as it reloaded, remove pending state
}
//if instance states were saved, set them!
}
#endif
}
void GDScriptLanguage::frame() {
calls = 0;
#ifdef DEBUG_ENABLED
if (profiling) {
if (lock) {
lock->lock();
}
SelfList<GDScriptFunction> *elem = function_list.first();
while (elem) {
elem->self()->profile.last_frame_call_count = elem->self()->profile.frame_call_count;
elem->self()->profile.last_frame_self_time = elem->self()->profile.frame_self_time;
elem->self()->profile.last_frame_total_time = elem->self()->profile.frame_total_time;
elem->self()->profile.frame_call_count = 0;
elem->self()->profile.frame_self_time = 0;
elem->self()->profile.frame_total_time = 0;
elem = elem->next();
}
if (lock) {
lock->unlock();
}
}
#endif
}
/* EDITOR FUNCTIONS */
void GDScriptLanguage::get_reserved_words(List<String> *p_words) const {
static const char *_reserved_words[] = {
// operators
"and",
"in",
"not",
"or",
// types and values
"false",
"float",
"int",
"bool",
"null",
"PI",
"TAU",
"INF",
"NAN",
"self",
"true",
"void",
// functions
"as",
"assert",
"breakpoint",
"class",
"class_name",
"extends",
"is",
"func",
"preload",
"setget",
"signal",
"tool",
"yield",
// var
"const",
"enum",
"export",
"onready",
"static",
"var",
// control flow
"break",
"continue",
"if",
"elif",
"else",
"for",
"pass",
"return",
"match",
"while",
"remote",
"sync",
"master",
"puppet",
"slave",
"remotesync",
"mastersync",
"puppetsync",
0
};
const char **w = _reserved_words;
while (*w) {
p_words->push_back(*w);
w++;
}
for (int i = 0; i < GDScriptFunctions::FUNC_MAX; i++) {
p_words->push_back(GDScriptFunctions::get_func_name(GDScriptFunctions::Function(i)));
}
}
bool GDScriptLanguage::handles_global_class_type(const String &p_type) const {
return p_type == "GDScript";
}
String GDScriptLanguage::get_global_class_name(const String &p_path, String *r_base_type, String *r_icon_path) const {
PoolVector<uint8_t> sourcef;
Error err;
FileAccessRef f = FileAccess::open(p_path, FileAccess::READ, &err);
if (err) {
return String();
}
String source = f->get_as_utf8_string();
GDScriptParser parser;
parser.parse(source, p_path.get_base_dir(), true, p_path, false, NULL, true);
if (parser.get_parse_tree() && parser.get_parse_tree()->type == GDScriptParser::Node::TYPE_CLASS) {
const GDScriptParser::ClassNode *c = static_cast<const GDScriptParser::ClassNode *>(parser.get_parse_tree());
if (r_icon_path) {
if (c->icon_path.empty() || c->icon_path.is_abs_path())
*r_icon_path = c->icon_path;
else if (c->icon_path.is_rel_path())
*r_icon_path = p_path.get_base_dir().plus_file(c->icon_path).simplify_path();
}
if (r_base_type) {
const GDScriptParser::ClassNode *subclass = c;
String path = p_path;
GDScriptParser subparser;
while (subclass) {
if (subclass->extends_used) {
if (subclass->extends_file) {
if (subclass->extends_class.size() == 0) {
get_global_class_name(subclass->extends_file, r_base_type);
subclass = NULL;
break;
} else {
Vector<StringName> extend_classes = subclass->extends_class;
FileAccessRef subfile = FileAccess::open(subclass->extends_file, FileAccess::READ);
if (!subfile) {
break;
}
String subsource = subfile->get_as_utf8_string();
if (subsource.empty()) {
break;
}
String subpath = subclass->extends_file;
if (subpath.is_rel_path()) {
subpath = path.get_base_dir().plus_file(subpath).simplify_path();
}
if (OK != subparser.parse(subsource, subpath.get_base_dir(), true, subpath, false, NULL, true)) {
break;
}
path = subpath;
if (!subparser.get_parse_tree() || subparser.get_parse_tree()->type != GDScriptParser::Node::TYPE_CLASS) {
break;
}
subclass = static_cast<const GDScriptParser::ClassNode *>(subparser.get_parse_tree());
while (extend_classes.size() > 0) {
bool found = false;
for (int i = 0; i < subclass->subclasses.size(); i++) {
const GDScriptParser::ClassNode *inner_class = subclass->subclasses[i];
if (inner_class->name == extend_classes[0]) {
extend_classes.remove(0);
found = true;
subclass = inner_class;
break;
}
}
if (!found) {
subclass = NULL;
break;
}
}
}
} else if (subclass->extends_class.size() == 1) {
*r_base_type = subclass->extends_class[0];
subclass = NULL;
} else {
break;
}
} else {
*r_base_type = "Reference";
subclass = NULL;
}
}
}
return c->name;
}
return String();
}
#ifdef DEBUG_ENABLED
String GDScriptWarning::get_message() const {
#define CHECK_SYMBOLS(m_amount) ERR_FAIL_COND_V(symbols.size() < m_amount, String());
switch (code) {
case UNASSIGNED_VARIABLE_OP_ASSIGN: {
CHECK_SYMBOLS(1);
return "Using assignment with operation but the variable '" + symbols[0] + "' was not previously assigned a value.";
} break;
case UNASSIGNED_VARIABLE: {
CHECK_SYMBOLS(1);
return "The variable '" + symbols[0] + "' was used but never assigned a value.";
} break;
case UNUSED_VARIABLE: {
CHECK_SYMBOLS(1);
return "The local variable '" + symbols[0] + "' is declared but never used in the block. If this is intended, prefix it with an underscore: '_" + symbols[0] + "'";
} break;
case SHADOWED_VARIABLE: {
CHECK_SYMBOLS(2);
return "The local variable '" + symbols[0] + "' is shadowing an already-defined variable at line " + symbols[1] + ".";
} break;
case UNUSED_CLASS_VARIABLE: {
CHECK_SYMBOLS(1);
return "The class variable '" + symbols[0] + "' is declared but never used in the script.";
} break;
case UNUSED_ARGUMENT: {
CHECK_SYMBOLS(2);
return "The argument '" + symbols[1] + "' is never used in the function '" + symbols[0] + "'. If this is intended, prefix it with an underscore: '_" + symbols[1] + "'";
} break;
case UNREACHABLE_CODE: {
CHECK_SYMBOLS(1);
return "Unreachable code (statement after return) in function '" + symbols[0] + "()'.";
} break;
case STANDALONE_EXPRESSION: {
return "Standalone expression (the line has no effect).";
} break;
case VOID_ASSIGNMENT: {
CHECK_SYMBOLS(1);
return "Assignment operation, but the function '" + symbols[0] + "()' returns void.";
} break;
case NARROWING_CONVERSION: {
return "Narrowing conversion (float is converted to int and loses precision).";
} break;
case FUNCTION_MAY_YIELD: {
CHECK_SYMBOLS(1);
return "Assigned variable is typed but the function '" + symbols[0] + "()' may yield and return a GDScriptFunctionState instead.";
} break;
case VARIABLE_CONFLICTS_FUNCTION: {
CHECK_SYMBOLS(1);
return "Variable declaration of '" + symbols[0] + "' conflicts with a function of the same name.";
} break;
case FUNCTION_CONFLICTS_VARIABLE: {
CHECK_SYMBOLS(1);
return "Function declaration of '" + symbols[0] + "()' conflicts with a variable of the same name.";
} break;
case FUNCTION_CONFLICTS_CONSTANT: {
CHECK_SYMBOLS(1);
return "Function declaration of '" + symbols[0] + "()' conflicts with a constant of the same name.";
} break;
case INCOMPATIBLE_TERNARY: {
return "Values of the ternary conditional are not mutually compatible.";
} break;
case UNUSED_SIGNAL: {
CHECK_SYMBOLS(1);
return "The signal '" + symbols[0] + "' is declared but never emitted.";
} break;
case RETURN_VALUE_DISCARDED: {
CHECK_SYMBOLS(1);
return "The function '" + symbols[0] + "()' returns a value, but this value is never used.";
} break;
case PROPERTY_USED_AS_FUNCTION: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "()' was not found in base '" + symbols[1] + "' but there's a property with the same name. Did you mean to access it?";
} break;
case CONSTANT_USED_AS_FUNCTION: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "()' was not found in base '" + symbols[1] + "' but there's a constant with the same name. Did you mean to access it?";
} break;
case FUNCTION_USED_AS_PROPERTY: {
CHECK_SYMBOLS(2);
return "The property '" + symbols[0] + "' was not found in base '" + symbols[1] + "' but there's a method with the same name. Did you mean to call it?";
} break;
case INTEGER_DIVISION: {
return "Integer division, decimal part will be discarded.";
} break;
case UNSAFE_PROPERTY_ACCESS: {
CHECK_SYMBOLS(2);
return "The property '" + symbols[0] + "' is not present on the inferred type '" + symbols[1] + "' (but may be present on a subtype).";
} break;
case UNSAFE_METHOD_ACCESS: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "' is not present on the inferred type '" + symbols[1] + "' (but may be present on a subtype).";
} break;
case UNSAFE_CAST: {
CHECK_SYMBOLS(1);
return "The value is cast to '" + symbols[0] + "' but has an unknown type.";
} break;
case UNSAFE_CALL_ARGUMENT: {
CHECK_SYMBOLS(4);
return "The argument '" + symbols[0] + "' of the function '" + symbols[1] + "' requires a the subtype '" + symbols[2] + "' but the supertype '" + symbols[3] + "' was provided";
} break;
case DEPRECATED_KEYWORD: {
CHECK_SYMBOLS(2);
return "The '" + symbols[0] + "' keyword is deprecated and will be removed in a future release, please replace its uses by '" + symbols[1] + "'.";
} break;
case WARNING_MAX: break; // Can't happen, but silences warning
}
ERR_FAIL_V_MSG(String(), "Invalid GDScript warning code: " + get_name_from_code(code) + ".");
#undef CHECK_SYMBOLS
}
String GDScriptWarning::get_name() const {
return get_name_from_code(code);
}
String GDScriptWarning::get_name_from_code(Code p_code) {
ERR_FAIL_COND_V(p_code < 0 || p_code >= WARNING_MAX, String());
static const char *names[] = {
"UNASSIGNED_VARIABLE",
"UNASSIGNED_VARIABLE_OP_ASSIGN",
"UNUSED_VARIABLE",
"SHADOWED_VARIABLE",
"UNUSED_CLASS_VARIABLE",
"UNUSED_ARGUMENT",
"UNREACHABLE_CODE",
"STANDALONE_EXPRESSION",
"VOID_ASSIGNMENT",
"NARROWING_CONVERSION",
"FUNCTION_MAY_YIELD",
"VARIABLE_CONFLICTS_FUNCTION",
"FUNCTION_CONFLICTS_VARIABLE",
"FUNCTION_CONFLICTS_CONSTANT",
"INCOMPATIBLE_TERNARY",
"UNUSED_SIGNAL",
"RETURN_VALUE_DISCARDED",
"PROPERTY_USED_AS_FUNCTION",
"CONSTANT_USED_AS_FUNCTION",
"FUNCTION_USED_AS_PROPERTY",
"INTEGER_DIVISION",
"UNSAFE_PROPERTY_ACCESS",
"UNSAFE_METHOD_ACCESS",
"UNSAFE_CAST",
"UNSAFE_CALL_ARGUMENT",
"DEPRECATED_KEYWORD",
NULL
};
return names[(int)p_code];
}
GDScriptWarning::Code GDScriptWarning::get_code_from_name(const String &p_name) {
for (int i = 0; i < WARNING_MAX; i++) {
if (get_name_from_code((Code)i) == p_name) {
return (Code)i;
}
}
ERR_FAIL_V_MSG(WARNING_MAX, "Invalid GDScript warning name: " + p_name);
}
#endif // DEBUG_ENABLED
GDScriptLanguage::GDScriptLanguage() {
calls = 0;
ERR_FAIL_COND(singleton);
singleton = this;
strings._init = StaticCString::create("_init");
strings._notification = StaticCString::create("_notification");
strings._set = StaticCString::create("_set");
strings._get = StaticCString::create("_get");
strings._get_property_list = StaticCString::create("_get_property_list");
strings._script_source = StaticCString::create("script/source");
_debug_parse_err_line = -1;
_debug_parse_err_file = "";
#ifdef NO_THREADS
lock = NULL;
#else
lock = Mutex::create();
#endif
profiling = false;
script_frame_time = 0;
_debug_call_stack_pos = 0;
int dmcs = GLOBAL_DEF("debug/settings/gdscript/max_call_stack", 1024);
ProjectSettings::get_singleton()->set_custom_property_info("debug/settings/gdscript/max_call_stack", PropertyInfo(Variant::INT, "debug/settings/gdscript/max_call_stack", PROPERTY_HINT_RANGE, "1024,4096,1,or_greater")); //minimum is 1024
if (ScriptDebugger::get_singleton()) {
//debugging enabled!
_debug_max_call_stack = dmcs;
_call_stack = memnew_arr(CallLevel, _debug_max_call_stack + 1);
} else {
_debug_max_call_stack = 0;
_call_stack = NULL;
}
#ifdef DEBUG_ENABLED
GLOBAL_DEF("debug/gdscript/warnings/enable", true);
GLOBAL_DEF("debug/gdscript/warnings/treat_warnings_as_errors", false);
GLOBAL_DEF("debug/gdscript/warnings/exclude_addons", true);
GLOBAL_DEF("debug/gdscript/completion/autocomplete_setters_and_getters", false);
for (int i = 0; i < (int)GDScriptWarning::WARNING_MAX; i++) {
String warning = GDScriptWarning::get_name_from_code((GDScriptWarning::Code)i).to_lower();
bool default_enabled = !warning.begins_with("unsafe_") && i != GDScriptWarning::UNUSED_CLASS_VARIABLE;
GLOBAL_DEF("debug/gdscript/warnings/" + warning, default_enabled);
}
#endif // DEBUG_ENABLED
}
GDScriptLanguage::~GDScriptLanguage() {
if (lock) {
memdelete(lock);
lock = NULL;
}
if (_call_stack) {
memdelete_arr(_call_stack);
}
singleton = NULL;
}
/*************** RESOURCE ***************/
RES ResourceFormatLoaderGDScript::load(const String &p_path, const String &p_original_path, Error *r_error) {
if (r_error)
*r_error = ERR_FILE_CANT_OPEN;
GDScript *script = memnew(GDScript);
Ref<GDScript> scriptres(script);
if (p_path.ends_with(".gde") || p_path.ends_with(".gdc")) {
script->set_script_path(p_original_path); // script needs this.
script->set_path(p_original_path);
Error err = script->load_byte_code(p_path);
ERR_FAIL_COND_V_MSG(err != OK, RES(), "Cannot load byte code from file '" + p_path + "'.");
} else {
Error err = script->load_source_code(p_path);
ERR_FAIL_COND_V_MSG(err != OK, RES(), "Cannot load source code from file '" + p_path + "'.");
script->set_script_path(p_original_path); // script needs this.
script->set_path(p_original_path);
script->reload();
}
if (r_error)
*r_error = OK;
return scriptres;
}
void ResourceFormatLoaderGDScript::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("gd");
p_extensions->push_back("gdc");
p_extensions->push_back("gde");
}
bool ResourceFormatLoaderGDScript::handles_type(const String &p_type) const {
return (p_type == "Script" || p_type == "GDScript");
}
String ResourceFormatLoaderGDScript::get_resource_type(const String &p_path) const {
String el = p_path.get_extension().to_lower();
if (el == "gd" || el == "gdc" || el == "gde")
return "GDScript";
return "";
}
void ResourceFormatLoaderGDScript::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
FileAccessRef file = FileAccess::open(p_path, FileAccess::READ);
ERR_FAIL_COND_MSG(!file, "Cannot open file '" + p_path + "'.");
String source = file->get_as_utf8_string();
if (source.empty()) {
return;
}
GDScriptParser parser;
if (OK != parser.parse(source, p_path.get_base_dir(), true, p_path, false, NULL, true)) {
return;
}
for (const List<String>::Element *E = parser.get_dependencies().front(); E; E = E->next()) {
p_dependencies->push_back(E->get());
}
}
Error ResourceFormatSaverGDScript::save(const String &p_path, const RES &p_resource, uint32_t p_flags) {
Ref<GDScript> sqscr = p_resource;
ERR_FAIL_COND_V(sqscr.is_null(), ERR_INVALID_PARAMETER);
String source = sqscr->get_source_code();
Error err;
FileAccess *file = FileAccess::open(p_path, FileAccess::WRITE, &err);
ERR_FAIL_COND_V_MSG(err, err, "Cannot save GDScript file '" + p_path + "'.");
file->store_string(source);
if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) {
memdelete(file);
return ERR_CANT_CREATE;
}
file->close();
memdelete(file);
if (ScriptServer::is_reload_scripts_on_save_enabled()) {
GDScriptLanguage::get_singleton()->reload_tool_script(p_resource, false);
}
return OK;
}
void ResourceFormatSaverGDScript::get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const {
if (Object::cast_to<GDScript>(*p_resource)) {
p_extensions->push_back("gd");
}
}
bool ResourceFormatSaverGDScript::recognize(const RES &p_resource) const {
return Object::cast_to<GDScript>(*p_resource) != NULL;
}