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gdscript_compiler.cpp
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/**************************************************************************/
/* gdscript_compiler.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 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. */
/**************************************************************************/
#include "gdscript_compiler.h"
#include "gdscript.h"
#include "gdscript_byte_codegen.h"
#include "gdscript_cache.h"
#include "gdscript_utility_functions.h"
#include "core/config/engine.h"
#include "core/config/project_settings.h"
#include "scene/scene_string_names.h"
bool GDScriptCompiler::_is_class_member_property(CodeGen &codegen, const StringName &p_name) {
if (codegen.function_node && codegen.function_node->is_static) {
return false;
}
if (_is_local_or_parameter(codegen, p_name)) {
return false; //shadowed
}
return _is_class_member_property(codegen.script, p_name);
}
bool GDScriptCompiler::_is_class_member_property(GDScript *owner, const StringName &p_name) {
GDScript *scr = owner;
GDScriptNativeClass *nc = nullptr;
while (scr) {
if (scr->native.is_valid()) {
nc = scr->native.ptr();
}
scr = scr->_base;
}
ERR_FAIL_NULL_V(nc, false);
return ClassDB::has_property(nc->get_name(), p_name);
}
bool GDScriptCompiler::_is_local_or_parameter(CodeGen &codegen, const StringName &p_name) {
return codegen.parameters.has(p_name) || codegen.locals.has(p_name);
}
void GDScriptCompiler::_set_error(const String &p_error, const GDScriptParser::Node *p_node) {
if (!error.is_empty()) {
return;
}
error = p_error;
if (p_node) {
err_line = p_node->start_line;
err_column = p_node->leftmost_column;
} else {
err_line = 0;
err_column = 0;
}
}
GDScriptDataType GDScriptCompiler::_gdtype_from_datatype(const GDScriptParser::DataType &p_datatype, GDScript *p_owner, bool p_handle_metatype) {
if (!p_datatype.is_set() || !p_datatype.is_hard_type() || p_datatype.is_coroutine) {
return GDScriptDataType();
}
GDScriptDataType result;
result.has_type = true;
switch (p_datatype.kind) {
case GDScriptParser::DataType::VARIANT: {
result.has_type = false;
} break;
case GDScriptParser::DataType::BUILTIN: {
result.kind = GDScriptDataType::BUILTIN;
result.builtin_type = p_datatype.builtin_type;
} break;
case GDScriptParser::DataType::NATIVE: {
if (p_handle_metatype && p_datatype.is_meta_type) {
result.kind = GDScriptDataType::NATIVE;
result.builtin_type = Variant::OBJECT;
// Fixes GH-82255. `GDScriptNativeClass` is obtainable in GDScript,
// but is not a registered and exposed class, so `GDScriptNativeClass`
// is missing from `GDScriptLanguage::get_singleton()->get_global_map()`.
//result.native_type = GDScriptNativeClass::get_class_static();
result.native_type = Object::get_class_static();
break;
}
result.kind = GDScriptDataType::NATIVE;
result.builtin_type = p_datatype.builtin_type;
result.native_type = p_datatype.native_type;
#ifdef DEBUG_ENABLED
if (unlikely(!GDScriptLanguage::get_singleton()->get_global_map().has(result.native_type))) {
_set_error(vformat(R"(GDScript bug (please report): Native class "%s" not found.)", result.native_type), nullptr);
return GDScriptDataType();
}
#endif
} break;
case GDScriptParser::DataType::SCRIPT: {
if (p_handle_metatype && p_datatype.is_meta_type) {
result.kind = GDScriptDataType::NATIVE;
result.builtin_type = Variant::OBJECT;
result.native_type = p_datatype.script_type.is_valid() ? p_datatype.script_type->get_class() : Script::get_class_static();
break;
}
result.kind = GDScriptDataType::SCRIPT;
result.builtin_type = p_datatype.builtin_type;
result.script_type_ref = p_datatype.script_type;
result.script_type = result.script_type_ref.ptr();
result.native_type = p_datatype.native_type;
} break;
case GDScriptParser::DataType::CLASS: {
if (p_handle_metatype && p_datatype.is_meta_type) {
result.kind = GDScriptDataType::NATIVE;
result.builtin_type = Variant::OBJECT;
result.native_type = GDScript::get_class_static();
break;
}
result.kind = GDScriptDataType::GDSCRIPT;
result.builtin_type = p_datatype.builtin_type;
result.native_type = p_datatype.native_type;
bool is_local_class = parser->has_class(p_datatype.class_type);
Ref<GDScript> script;
if (is_local_class) {
script = Ref<GDScript>(main_script);
} else {
Error err = OK;
script = GDScriptCache::get_shallow_script(p_datatype.script_path, err, p_owner->path);
if (err) {
_set_error(vformat(R"(Could not find script "%s": %s)", p_datatype.script_path, error_names[err]), nullptr);
return GDScriptDataType();
}
}
if (script.is_valid()) {
script = Ref<GDScript>(script->find_class(p_datatype.class_type->fqcn));
}
if (script.is_null()) {
_set_error(vformat(R"(Could not find class "%s" in "%s".)", p_datatype.class_type->fqcn, p_datatype.script_path), nullptr);
return GDScriptDataType();
} else {
// Only hold a strong reference if the owner of the element qualified with this type is not local, to avoid cyclic references (leaks).
// TODO: Might lead to use after free if script_type is a subclass and is used after its parent is freed.
if (!is_local_class) {
result.script_type_ref = script;
}
result.script_type = script.ptr();
result.native_type = p_datatype.native_type;
}
} break;
case GDScriptParser::DataType::ENUM:
if (p_handle_metatype && p_datatype.is_meta_type) {
result.kind = GDScriptDataType::BUILTIN;
result.builtin_type = Variant::DICTIONARY;
break;
}
result.kind = GDScriptDataType::BUILTIN;
result.builtin_type = p_datatype.builtin_type;
break;
case GDScriptParser::DataType::RESOLVING:
case GDScriptParser::DataType::UNRESOLVED: {
_set_error("Parser bug (please report): converting unresolved type.", nullptr);
return GDScriptDataType();
}
}
for (int i = 0; i < p_datatype.container_element_types.size(); i++) {
result.set_container_element_type(i, _gdtype_from_datatype(p_datatype.get_container_element_type_or_variant(i), p_owner, false));
}
return result;
}
static bool _is_exact_type(const PropertyInfo &p_par_type, const GDScriptDataType &p_arg_type) {
if (!p_arg_type.has_type) {
return false;
}
if (p_par_type.type == Variant::NIL) {
return false;
}
if (p_par_type.type == Variant::OBJECT) {
if (p_arg_type.kind == GDScriptDataType::BUILTIN) {
return false;
}
StringName class_name;
if (p_arg_type.kind == GDScriptDataType::NATIVE) {
class_name = p_arg_type.native_type;
} else {
class_name = p_arg_type.native_type == StringName() ? p_arg_type.script_type->get_instance_base_type() : p_arg_type.native_type;
}
return p_par_type.class_name == class_name || ClassDB::is_parent_class(class_name, p_par_type.class_name);
} else {
if (p_arg_type.kind != GDScriptDataType::BUILTIN) {
return false;
}
return p_par_type.type == p_arg_type.builtin_type;
}
}
static bool _can_use_validate_call(const MethodBind *p_method, const Vector<GDScriptCodeGenerator::Address> &p_arguments) {
if (p_method->is_vararg()) {
// Validated call won't work with vararg methods.
return false;
}
if (p_method->get_argument_count() != p_arguments.size()) {
// Validated call won't work with default arguments.
return false;
}
MethodInfo info;
ClassDB::get_method_info(p_method->get_instance_class(), p_method->get_name(), &info);
int i = 0;
for (List<PropertyInfo>::ConstIterator itr = info.arguments.begin(); itr != info.arguments.end(); ++itr, ++i) {
if (!_is_exact_type(*itr, p_arguments[i].type)) {
return false;
}
}
return true;
}
GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &codegen, Error &r_error, const GDScriptParser::ExpressionNode *p_expression, bool p_root, bool p_initializer) {
if (p_expression->is_constant && !(p_expression->get_datatype().is_meta_type && p_expression->get_datatype().kind == GDScriptParser::DataType::CLASS)) {
return codegen.add_constant(p_expression->reduced_value);
}
GDScriptCodeGenerator *gen = codegen.generator;
switch (p_expression->type) {
case GDScriptParser::Node::IDENTIFIER: {
// Look for identifiers in current scope.
const GDScriptParser::IdentifierNode *in = static_cast<const GDScriptParser::IdentifierNode *>(p_expression);
StringName identifier = in->name;
switch (in->source) {
// LOCALS.
case GDScriptParser::IdentifierNode::FUNCTION_PARAMETER:
case GDScriptParser::IdentifierNode::LOCAL_VARIABLE:
case GDScriptParser::IdentifierNode::LOCAL_CONSTANT:
case GDScriptParser::IdentifierNode::LOCAL_ITERATOR:
case GDScriptParser::IdentifierNode::LOCAL_BIND: {
// Try function parameters.
if (codegen.parameters.has(identifier)) {
return codegen.parameters[identifier];
}
// Try local variables and constants.
if (!p_initializer && codegen.locals.has(identifier)) {
return codegen.locals[identifier];
}
} break;
// MEMBERS.
case GDScriptParser::IdentifierNode::MEMBER_VARIABLE:
case GDScriptParser::IdentifierNode::MEMBER_FUNCTION:
case GDScriptParser::IdentifierNode::MEMBER_SIGNAL:
case GDScriptParser::IdentifierNode::INHERITED_VARIABLE: {
// Try class members.
if (_is_class_member_property(codegen, identifier)) {
// Get property.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(_gdtype_from_datatype(p_expression->get_datatype(), codegen.script));
gen->write_get_member(temp, identifier);
return temp;
}
// Try members.
if (!codegen.function_node || !codegen.function_node->is_static) {
// Try member variables.
if (codegen.script->member_indices.has(identifier)) {
if (codegen.script->member_indices[identifier].getter != StringName() && codegen.script->member_indices[identifier].getter != codegen.function_name) {
// Perform getter.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(codegen.script->member_indices[identifier].data_type);
Vector<GDScriptCodeGenerator::Address> args; // No argument needed.
gen->write_call_self(temp, codegen.script->member_indices[identifier].getter, args);
return temp;
} else {
// No getter or inside getter: direct member access.
int idx = codegen.script->member_indices[identifier].index;
return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::MEMBER, idx, codegen.script->get_member_type(identifier));
}
}
}
// Try methods and signals (can be Callable and Signal).
{
// Search upwards through parent classes:
const GDScriptParser::ClassNode *base_class = codegen.class_node;
while (base_class != nullptr) {
if (base_class->has_member(identifier)) {
const GDScriptParser::ClassNode::Member &member = base_class->get_member(identifier);
if (member.type == GDScriptParser::ClassNode::Member::FUNCTION || member.type == GDScriptParser::ClassNode::Member::SIGNAL) {
// Get like it was a property.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(); // TODO: Get type here.
GDScriptCodeGenerator::Address base(GDScriptCodeGenerator::Address::SELF);
if (member.type == GDScriptParser::ClassNode::Member::FUNCTION && member.function->is_static) {
base = GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::CLASS);
}
gen->write_get_named(temp, identifier, base);
return temp;
}
}
base_class = base_class->base_type.class_type;
}
// Try in native base.
GDScript *scr = codegen.script;
GDScriptNativeClass *nc = nullptr;
while (scr) {
if (scr->native.is_valid()) {
nc = scr->native.ptr();
}
scr = scr->_base;
}
if (nc && (identifier == CoreStringName(free_) || ClassDB::has_signal(nc->get_name(), identifier) || ClassDB::has_method(nc->get_name(), identifier))) {
// Get like it was a property.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(); // TODO: Get type here.
GDScriptCodeGenerator::Address self(GDScriptCodeGenerator::Address::SELF);
gen->write_get_named(temp, identifier, self);
return temp;
}
}
} break;
case GDScriptParser::IdentifierNode::MEMBER_CONSTANT:
case GDScriptParser::IdentifierNode::MEMBER_CLASS: {
// Try class constants.
GDScript *owner = codegen.script;
while (owner) {
GDScript *scr = owner;
GDScriptNativeClass *nc = nullptr;
while (scr) {
if (scr->constants.has(identifier)) {
return codegen.add_constant(scr->constants[identifier]); // TODO: Get type here.
}
if (scr->native.is_valid()) {
nc = scr->native.ptr();
}
scr = scr->_base;
}
// Class C++ integer constant.
if (nc) {
bool success = false;
int64_t constant = ClassDB::get_integer_constant(nc->get_name(), identifier, &success);
if (success) {
return codegen.add_constant(constant);
}
}
owner = owner->_owner;
}
} break;
case GDScriptParser::IdentifierNode::STATIC_VARIABLE: {
// Try static variables.
GDScript *scr = codegen.script;
while (scr) {
if (scr->static_variables_indices.has(identifier)) {
if (scr->static_variables_indices[identifier].getter != StringName() && scr->static_variables_indices[identifier].getter != codegen.function_name) {
// Perform getter.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(scr->static_variables_indices[identifier].data_type);
GDScriptCodeGenerator::Address class_addr(GDScriptCodeGenerator::Address::CLASS);
Vector<GDScriptCodeGenerator::Address> args; // No argument needed.
gen->write_call(temp, class_addr, scr->static_variables_indices[identifier].getter, args);
return temp;
} else {
// No getter or inside getter: direct variable access.
GDScriptCodeGenerator::Address temp = codegen.add_temporary(scr->static_variables_indices[identifier].data_type);
GDScriptCodeGenerator::Address _class = codegen.add_constant(scr);
int index = scr->static_variables_indices[identifier].index;
gen->write_get_static_variable(temp, _class, index);
return temp;
}
}
scr = scr->_base;
}
} break;
// GLOBALS.
case GDScriptParser::IdentifierNode::UNDEFINED_SOURCE: {
// Try globals.
if (GDScriptLanguage::get_singleton()->get_global_map().has(identifier)) {
// If it's an autoload singleton, we postpone to load it at runtime.
// This is so one autoload doesn't try to load another before it's compiled.
HashMap<StringName, ProjectSettings::AutoloadInfo> autoloads = ProjectSettings::get_singleton()->get_autoload_list();
if (autoloads.has(identifier) && autoloads[identifier].is_singleton) {
GDScriptCodeGenerator::Address global = codegen.add_temporary(_gdtype_from_datatype(in->get_datatype(), codegen.script));
int idx = GDScriptLanguage::get_singleton()->get_global_map()[identifier];
gen->write_store_global(global, idx);
return global;
} else {
int idx = GDScriptLanguage::get_singleton()->get_global_map()[identifier];
Variant global = GDScriptLanguage::get_singleton()->get_global_array()[idx];
return codegen.add_constant(global);
}
}
// Try global classes.
if (ScriptServer::is_global_class(identifier)) {
const GDScriptParser::ClassNode *class_node = codegen.class_node;
while (class_node->outer) {
class_node = class_node->outer;
}
Ref<Resource> res;
if (class_node->identifier && class_node->identifier->name == identifier) {
res = Ref<GDScript>(main_script);
} else {
String global_class_path = ScriptServer::get_global_class_path(identifier);
if (ResourceLoader::get_resource_type(global_class_path) == "GDScript") {
Error err = OK;
// Should not need to pass p_owner since analyzer will already have done it.
res = GDScriptCache::get_shallow_script(global_class_path, err);
if (err != OK) {
_set_error("Can't load global class " + String(identifier), p_expression);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
} else {
res = ResourceLoader::load(global_class_path);
if (res.is_null()) {
_set_error("Can't load global class " + String(identifier) + ", cyclic reference?", p_expression);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
}
}
return codegen.add_constant(res);
}
#ifdef TOOLS_ENABLED
if (GDScriptLanguage::get_singleton()->get_named_globals_map().has(identifier)) {
GDScriptCodeGenerator::Address global = codegen.add_temporary(); // TODO: Get type.
gen->write_store_named_global(global, identifier);
return global;
}
#endif
} break;
}
// Not found, error.
_set_error("Identifier not found: " + String(identifier), p_expression);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
} break;
case GDScriptParser::Node::LITERAL: {
// Return constant.
const GDScriptParser::LiteralNode *cn = static_cast<const GDScriptParser::LiteralNode *>(p_expression);
return codegen.add_constant(cn->value);
} break;
case GDScriptParser::Node::SELF: {
//return constant
if (codegen.function_node && codegen.function_node->is_static) {
_set_error("'self' not present in static function.", p_expression);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::SELF);
} break;
case GDScriptParser::Node::ARRAY: {
const GDScriptParser::ArrayNode *an = static_cast<const GDScriptParser::ArrayNode *>(p_expression);
Vector<GDScriptCodeGenerator::Address> values;
// Create the result temporary first since it's the last to be killed.
GDScriptDataType array_type = _gdtype_from_datatype(an->get_datatype(), codegen.script);
GDScriptCodeGenerator::Address result = codegen.add_temporary(array_type);
for (int i = 0; i < an->elements.size(); i++) {
GDScriptCodeGenerator::Address val = _parse_expression(codegen, r_error, an->elements[i]);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
values.push_back(val);
}
if (array_type.has_container_element_type(0)) {
gen->write_construct_typed_array(result, array_type.get_container_element_type(0), values);
} else {
gen->write_construct_array(result, values);
}
for (int i = 0; i < values.size(); i++) {
if (values[i].mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
}
return result;
} break;
case GDScriptParser::Node::DICTIONARY: {
const GDScriptParser::DictionaryNode *dn = static_cast<const GDScriptParser::DictionaryNode *>(p_expression);
Vector<GDScriptCodeGenerator::Address> elements;
// Create the result temporary first since it's the last to be killed.
GDScriptDataType dict_type = _gdtype_from_datatype(dn->get_datatype(), codegen.script);
GDScriptCodeGenerator::Address result = codegen.add_temporary(dict_type);
for (int i = 0; i < dn->elements.size(); i++) {
// Key.
GDScriptCodeGenerator::Address element;
switch (dn->style) {
case GDScriptParser::DictionaryNode::PYTHON_DICT:
// Python-style: key is any expression.
element = _parse_expression(codegen, r_error, dn->elements[i].key);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
break;
case GDScriptParser::DictionaryNode::LUA_TABLE:
// Lua-style: key is an identifier interpreted as StringName.
StringName key = dn->elements[i].key->reduced_value.operator StringName();
element = codegen.add_constant(key);
break;
}
elements.push_back(element);
element = _parse_expression(codegen, r_error, dn->elements[i].value);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
elements.push_back(element);
}
if (dict_type.has_container_element_types()) {
gen->write_construct_typed_dictionary(result, dict_type.get_container_element_type_or_variant(0), dict_type.get_container_element_type_or_variant(1), elements);
} else {
gen->write_construct_dictionary(result, elements);
}
for (int i = 0; i < elements.size(); i++) {
if (elements[i].mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
}
return result;
} break;
case GDScriptParser::Node::CAST: {
const GDScriptParser::CastNode *cn = static_cast<const GDScriptParser::CastNode *>(p_expression);
GDScriptDataType cast_type = _gdtype_from_datatype(cn->get_datatype(), codegen.script, false);
GDScriptCodeGenerator::Address result;
if (cast_type.has_type) {
// Create temporary for result first since it will be deleted last.
result = codegen.add_temporary(cast_type);
GDScriptCodeGenerator::Address src = _parse_expression(codegen, r_error, cn->operand);
gen->write_cast(result, src, cast_type);
if (src.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
} else {
result = _parse_expression(codegen, r_error, cn->operand);
}
return result;
} break;
case GDScriptParser::Node::CALL: {
const GDScriptParser::CallNode *call = static_cast<const GDScriptParser::CallNode *>(p_expression);
bool is_awaited = p_expression == awaited_node;
GDScriptDataType type = _gdtype_from_datatype(call->get_datatype(), codegen.script);
GDScriptCodeGenerator::Address result;
if (p_root) {
result = GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::NIL);
} else {
result = codegen.add_temporary(type);
}
Vector<GDScriptCodeGenerator::Address> arguments;
for (int i = 0; i < call->arguments.size(); i++) {
GDScriptCodeGenerator::Address arg = _parse_expression(codegen, r_error, call->arguments[i]);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
arguments.push_back(arg);
}
if (!call->is_super && call->callee->type == GDScriptParser::Node::IDENTIFIER && GDScriptParser::get_builtin_type(call->function_name) < Variant::VARIANT_MAX) {
gen->write_construct(result, GDScriptParser::get_builtin_type(call->function_name), arguments);
} else if (!call->is_super && call->callee->type == GDScriptParser::Node::IDENTIFIER && Variant::has_utility_function(call->function_name)) {
// Variant utility function.
gen->write_call_utility(result, call->function_name, arguments);
} else if (!call->is_super && call->callee->type == GDScriptParser::Node::IDENTIFIER && GDScriptUtilityFunctions::function_exists(call->function_name)) {
// GDScript utility function.
gen->write_call_gdscript_utility(result, call->function_name, arguments);
} else {
// Regular function.
const GDScriptParser::ExpressionNode *callee = call->callee;
if (call->is_super) {
// Super call.
gen->write_super_call(result, call->function_name, arguments);
} else {
if (callee->type == GDScriptParser::Node::IDENTIFIER) {
// Self function call.
if (ClassDB::has_method(codegen.script->native->get_name(), call->function_name)) {
// Native method, use faster path.
GDScriptCodeGenerator::Address self;
self.mode = GDScriptCodeGenerator::Address::SELF;
MethodBind *method = ClassDB::get_method(codegen.script->native->get_name(), call->function_name);
if (_can_use_validate_call(method, arguments)) {
// Exact arguments, use validated call.
gen->write_call_method_bind_validated(result, self, method, arguments);
} else {
// Not exact arguments, but still can use method bind call.
gen->write_call_method_bind(result, self, method, arguments);
}
} else if (call->is_static || codegen.is_static || (codegen.function_node && codegen.function_node->is_static) || call->function_name == "new") {
GDScriptCodeGenerator::Address self;
self.mode = GDScriptCodeGenerator::Address::CLASS;
if (is_awaited) {
gen->write_call_async(result, self, call->function_name, arguments);
} else {
gen->write_call(result, self, call->function_name, arguments);
}
} else {
if (is_awaited) {
gen->write_call_self_async(result, call->function_name, arguments);
} else {
gen->write_call_self(result, call->function_name, arguments);
}
}
} else if (callee->type == GDScriptParser::Node::SUBSCRIPT) {
const GDScriptParser::SubscriptNode *subscript = static_cast<const GDScriptParser::SubscriptNode *>(call->callee);
if (subscript->is_attribute) {
// May be static built-in method call.
if (!call->is_super && subscript->base->type == GDScriptParser::Node::IDENTIFIER && GDScriptParser::get_builtin_type(static_cast<GDScriptParser::IdentifierNode *>(subscript->base)->name) < Variant::VARIANT_MAX) {
gen->write_call_builtin_type_static(result, GDScriptParser::get_builtin_type(static_cast<GDScriptParser::IdentifierNode *>(subscript->base)->name), subscript->attribute->name, arguments);
} else if (!call->is_super && subscript->base->type == GDScriptParser::Node::IDENTIFIER && call->function_name != SNAME("new") &&
ClassDB::class_exists(static_cast<GDScriptParser::IdentifierNode *>(subscript->base)->name) && !Engine::get_singleton()->has_singleton(static_cast<GDScriptParser::IdentifierNode *>(subscript->base)->name)) {
// It's a static native method call.
StringName class_name = static_cast<GDScriptParser::IdentifierNode *>(subscript->base)->name;
MethodBind *method = ClassDB::get_method(class_name, subscript->attribute->name);
if (_can_use_validate_call(method, arguments)) {
// Exact arguments, use validated call.
gen->write_call_native_static_validated(result, method, arguments);
} else {
// Not exact arguments, use regular static call
gen->write_call_native_static(result, class_name, subscript->attribute->name, arguments);
}
} else {
GDScriptCodeGenerator::Address base = _parse_expression(codegen, r_error, subscript->base);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
if (is_awaited) {
gen->write_call_async(result, base, call->function_name, arguments);
} else if (base.type.has_type && base.type.kind != GDScriptDataType::BUILTIN) {
// Native method, use faster path.
StringName class_name;
if (base.type.kind == GDScriptDataType::NATIVE) {
class_name = base.type.native_type;
} else {
class_name = base.type.native_type == StringName() ? base.type.script_type->get_instance_base_type() : base.type.native_type;
}
if (ClassDB::class_exists(class_name) && ClassDB::has_method(class_name, call->function_name)) {
MethodBind *method = ClassDB::get_method(class_name, call->function_name);
if (_can_use_validate_call(method, arguments)) {
// Exact arguments, use validated call.
gen->write_call_method_bind_validated(result, base, method, arguments);
} else {
// Not exact arguments, but still can use method bind call.
gen->write_call_method_bind(result, base, method, arguments);
}
} else {
gen->write_call(result, base, call->function_name, arguments);
}
} else if (base.type.has_type && base.type.kind == GDScriptDataType::BUILTIN) {
gen->write_call_builtin_type(result, base, base.type.builtin_type, call->function_name, arguments);
} else {
gen->write_call(result, base, call->function_name, arguments);
}
if (base.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
}
} else {
_set_error("Cannot call something that isn't a function.", call->callee);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
} else {
_set_error("Compiler bug (please report): incorrect callee type in call node.", call->callee);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
}
}
for (int i = 0; i < arguments.size(); i++) {
if (arguments[i].mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
}
return result;
} break;
case GDScriptParser::Node::GET_NODE: {
const GDScriptParser::GetNodeNode *get_node = static_cast<const GDScriptParser::GetNodeNode *>(p_expression);
Vector<GDScriptCodeGenerator::Address> args;
args.push_back(codegen.add_constant(NodePath(get_node->full_path)));
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(get_node->get_datatype(), codegen.script));
MethodBind *get_node_method = ClassDB::get_method("Node", "get_node");
gen->write_call_method_bind_validated(result, GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::SELF), get_node_method, args);
return result;
} break;
case GDScriptParser::Node::PRELOAD: {
const GDScriptParser::PreloadNode *preload = static_cast<const GDScriptParser::PreloadNode *>(p_expression);
// Add resource as constant.
return codegen.add_constant(preload->resource);
} break;
case GDScriptParser::Node::AWAIT: {
const GDScriptParser::AwaitNode *await = static_cast<const GDScriptParser::AwaitNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(p_expression->get_datatype(), codegen.script));
GDScriptParser::ExpressionNode *previous_awaited_node = awaited_node;
awaited_node = await->to_await;
GDScriptCodeGenerator::Address argument = _parse_expression(codegen, r_error, await->to_await);
awaited_node = previous_awaited_node;
if (r_error) {
return GDScriptCodeGenerator::Address();
}
gen->write_await(result, argument);
if (argument.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
return result;
} break;
// Indexing operator.
case GDScriptParser::Node::SUBSCRIPT: {
const GDScriptParser::SubscriptNode *subscript = static_cast<const GDScriptParser::SubscriptNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(subscript->get_datatype(), codegen.script));
GDScriptCodeGenerator::Address base = _parse_expression(codegen, r_error, subscript->base);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
bool named = subscript->is_attribute;
StringName name;
GDScriptCodeGenerator::Address index;
if (subscript->is_attribute) {
if (subscript->base->type == GDScriptParser::Node::SELF && codegen.script) {
GDScriptParser::IdentifierNode *identifier = subscript->attribute;
HashMap<StringName, GDScript::MemberInfo>::Iterator MI = codegen.script->member_indices.find(identifier->name);
#ifdef DEBUG_ENABLED
if (MI && MI->value.getter == codegen.function_name) {
String n = identifier->name;
_set_error("Must use '" + n + "' instead of 'self." + n + "' in getter.", identifier);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
#endif
if (MI && MI->value.getter == "") {
// Remove result temp as we don't need it.
gen->pop_temporary();
// Faster than indexing self (as if no self. had been used).
return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::MEMBER, MI->value.index, _gdtype_from_datatype(subscript->get_datatype(), codegen.script));
}
}
name = subscript->attribute->name;
named = true;
} else {
if (subscript->index->is_constant && subscript->index->reduced_value.get_type() == Variant::STRING_NAME) {
// Also, somehow, named (speed up anyway).
name = subscript->index->reduced_value;
named = true;
} else {
// Regular indexing.
index = _parse_expression(codegen, r_error, subscript->index);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
}
}
if (named) {
gen->write_get_named(result, name, base);
} else {
gen->write_get(result, index, base);
}
if (index.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
if (base.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
return result;
} break;
case GDScriptParser::Node::UNARY_OPERATOR: {
const GDScriptParser::UnaryOpNode *unary = static_cast<const GDScriptParser::UnaryOpNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(unary->get_datatype(), codegen.script));
GDScriptCodeGenerator::Address operand = _parse_expression(codegen, r_error, unary->operand);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
gen->write_unary_operator(result, unary->variant_op, operand);
if (operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
return result;
}
case GDScriptParser::Node::BINARY_OPERATOR: {
const GDScriptParser::BinaryOpNode *binary = static_cast<const GDScriptParser::BinaryOpNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(binary->get_datatype(), codegen.script));
switch (binary->operation) {
case GDScriptParser::BinaryOpNode::OP_LOGIC_AND: {
// AND operator with early out on failure.
GDScriptCodeGenerator::Address left_operand = _parse_expression(codegen, r_error, binary->left_operand);
gen->write_and_left_operand(left_operand);
GDScriptCodeGenerator::Address right_operand = _parse_expression(codegen, r_error, binary->right_operand);
gen->write_and_right_operand(right_operand);
gen->write_end_and(result);
if (right_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
if (left_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
} break;
case GDScriptParser::BinaryOpNode::OP_LOGIC_OR: {
// OR operator with early out on success.
GDScriptCodeGenerator::Address left_operand = _parse_expression(codegen, r_error, binary->left_operand);
gen->write_or_left_operand(left_operand);
GDScriptCodeGenerator::Address right_operand = _parse_expression(codegen, r_error, binary->right_operand);
gen->write_or_right_operand(right_operand);
gen->write_end_or(result);
if (right_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
if (left_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
} break;
default: {
GDScriptCodeGenerator::Address left_operand = _parse_expression(codegen, r_error, binary->left_operand);
GDScriptCodeGenerator::Address right_operand = _parse_expression(codegen, r_error, binary->right_operand);
gen->write_binary_operator(result, binary->variant_op, left_operand, right_operand);
if (right_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
if (left_operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
}
}
return result;
} break;
case GDScriptParser::Node::TERNARY_OPERATOR: {
// x IF a ELSE y operator with early out on failure.
const GDScriptParser::TernaryOpNode *ternary = static_cast<const GDScriptParser::TernaryOpNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(ternary->get_datatype(), codegen.script));
gen->write_start_ternary(result);
GDScriptCodeGenerator::Address condition = _parse_expression(codegen, r_error, ternary->condition);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
gen->write_ternary_condition(condition);
if (condition.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
GDScriptCodeGenerator::Address true_expr = _parse_expression(codegen, r_error, ternary->true_expr);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
gen->write_ternary_true_expr(true_expr);
if (true_expr.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
GDScriptCodeGenerator::Address false_expr = _parse_expression(codegen, r_error, ternary->false_expr);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
gen->write_ternary_false_expr(false_expr);
if (false_expr.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
gen->write_end_ternary();
return result;
} break;
case GDScriptParser::Node::TYPE_TEST: {
const GDScriptParser::TypeTestNode *type_test = static_cast<const GDScriptParser::TypeTestNode *>(p_expression);
GDScriptCodeGenerator::Address result = codegen.add_temporary(_gdtype_from_datatype(type_test->get_datatype(), codegen.script));
GDScriptCodeGenerator::Address operand = _parse_expression(codegen, r_error, type_test->operand);
GDScriptDataType test_type = _gdtype_from_datatype(type_test->test_datatype, codegen.script, false);
if (r_error) {
return GDScriptCodeGenerator::Address();
}
if (test_type.has_type) {
gen->write_type_test(result, operand, test_type);
} else {
gen->write_assign_true(result);
}
if (operand.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
gen->pop_temporary();
}
return result;
} break;
case GDScriptParser::Node::ASSIGNMENT: {
const GDScriptParser::AssignmentNode *assignment = static_cast<const GDScriptParser::AssignmentNode *>(p_expression);
if (assignment->assignee->type == GDScriptParser::Node::SUBSCRIPT) {
// SET (chained) MODE!
const GDScriptParser::SubscriptNode *subscript = static_cast<GDScriptParser::SubscriptNode *>(assignment->assignee);
#ifdef DEBUG_ENABLED
if (subscript->is_attribute && subscript->base->type == GDScriptParser::Node::SELF && codegen.script) {
HashMap<StringName, GDScript::MemberInfo>::Iterator MI = codegen.script->member_indices.find(subscript->attribute->name);
if (MI && MI->value.setter == codegen.function_name) {
String n = subscript->attribute->name;
_set_error("Must use '" + n + "' instead of 'self." + n + "' in setter.", subscript);
r_error = ERR_COMPILATION_FAILED;
return GDScriptCodeGenerator::Address();
}
}
#endif
/* Find chain of sets */