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godot/modules/gdscript/gdscript_function.cpp
Pedro J. Estébanez 6697e380d9 Fix check for freed object during cast
2021-09-27 19:46:49 +02:00

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/*************************************************************************/
/* gdscript_function.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "gdscript_function.h"
#include "core/os/os.h"
#include "gdscript.h"
#include "gdscript_functions.h"
Variant *GDScriptFunction::_get_variant(int p_address, GDScriptInstance *p_instance, GDScript *p_script, Variant &self, Variant &static_ref, Variant *p_stack, String &r_error) const {
int address = p_address & ADDR_MASK;
//sequential table (jump table generated by compiler)
switch ((p_address & ADDR_TYPE_MASK) >> ADDR_BITS) {
case ADDR_TYPE_SELF: {
#ifdef DEBUG_ENABLED
if (unlikely(!p_instance)) {
r_error = "Cannot access self without instance.";
return nullptr;
}
#endif
return &self;
} break;
case ADDR_TYPE_CLASS: {
return &static_ref;
} break;
case ADDR_TYPE_MEMBER: {
#ifdef DEBUG_ENABLED
if (unlikely(!p_instance)) {
r_error = "Cannot access member without instance.";
return nullptr;
}
#endif
//member indexing is O(1)
return &p_instance->members.write[address];
} break;
case ADDR_TYPE_CLASS_CONSTANT: {
//todo change to index!
GDScript *s = p_script;
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, _global_names_count, nullptr);
#endif
const StringName *sn = &_global_names_ptr[address];
while (s) {
GDScript *o = s;
while (o) {
Map<StringName, Variant>::Element *E = o->constants.find(*sn);
if (E) {
return &E->get();
}
o = o->_owner;
}
s = s->_base;
}
ERR_FAIL_V_MSG(nullptr, "GDScriptCompiler bug.");
} break;
case ADDR_TYPE_LOCAL_CONSTANT: {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, _constant_count, nullptr);
#endif
return &_constants_ptr[address];
} break;
case ADDR_TYPE_STACK:
case ADDR_TYPE_STACK_VARIABLE: {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, _stack_size, nullptr);
#endif
return &p_stack[address];
} break;
case ADDR_TYPE_GLOBAL: {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, GDScriptLanguage::get_singleton()->get_global_array_size(), nullptr);
#endif
return &GDScriptLanguage::get_singleton()->get_global_array()[address];
} break;
#ifdef TOOLS_ENABLED
case ADDR_TYPE_NAMED_GLOBAL: {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, _named_globals_count, nullptr);
#endif
StringName id = _named_globals_ptr[address];
if (GDScriptLanguage::get_singleton()->get_named_globals_map().has(id)) {
return (Variant *)&GDScriptLanguage::get_singleton()->get_named_globals_map()[id];
} else {
r_error = "Autoload singleton '" + String(id) + "' has been removed.";
return nullptr;
}
} break;
#endif
case ADDR_TYPE_NIL: {
return &nil;
} break;
}
ERR_FAIL_V_MSG(nullptr, "Bad code! (unknown addressing mode).");
return nullptr;
}
#ifdef DEBUG_ENABLED
static String _get_var_type(const Variant *p_var) {
String basestr;
if (p_var->get_type() == Variant::OBJECT) {
Object *bobj = *p_var;
if (!bobj) {
if (p_var->is_invalid_object()) {
basestr = "previously freed instance";
} else {
basestr = "null instance";
}
} else {
if (bobj->get_script_instance()) {
basestr = bobj->get_class() + " (" + bobj->get_script_instance()->get_script()->get_path().get_file() + ")";
} else {
basestr = bobj->get_class();
}
}
} else {
basestr = Variant::get_type_name(p_var->get_type());
}
return basestr;
}
#endif // DEBUG_ENABLED
String GDScriptFunction::_get_call_error(const Variant::CallError &p_err, const String &p_where, const Variant **argptrs) const {
String err_text;
if (p_err.error == Variant::CallError::CALL_ERROR_INVALID_ARGUMENT) {
int errorarg = p_err.argument;
// Handle the Object to Object case separately as we don't have further class details.
#ifdef DEBUG_ENABLED
if (p_err.expected == Variant::OBJECT && argptrs[errorarg]->get_type() == p_err.expected) {
err_text = "Invalid type in " + p_where + ". The Object-derived class of argument " + itos(errorarg + 1) + " (" + _get_var_type(argptrs[errorarg]) + ") is not a subclass of the expected argument class.";
} else
#endif // DEBUG_ENABLED
{
err_text = "Invalid type in " + p_where + ". Cannot convert argument " + itos(errorarg + 1) + " from " + Variant::get_type_name(argptrs[errorarg]->get_type()) + " to " + Variant::get_type_name(p_err.expected) + ".";
}
} else if (p_err.error == Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS) {
err_text = "Invalid call to " + p_where + ". Expected " + itos(p_err.argument) + " arguments.";
} else if (p_err.error == Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS) {
err_text = "Invalid call to " + p_where + ". Expected " + itos(p_err.argument) + " arguments.";
} else if (p_err.error == Variant::CallError::CALL_ERROR_INVALID_METHOD) {
err_text = "Invalid call. Nonexistent " + p_where + ".";
} else if (p_err.error == Variant::CallError::CALL_ERROR_INSTANCE_IS_NULL) {
err_text = "Attempt to call " + p_where + " on a null instance.";
} else {
err_text = "Bug, call error: #" + itos(p_err.error);
}
return err_text;
}
#if defined(__GNUC__)
#define OPCODES_TABLE \
static const void *switch_table_ops[] = { \
&&OPCODE_OPERATOR, \
&&OPCODE_EXTENDS_TEST, \
&&OPCODE_IS_BUILTIN, \
&&OPCODE_SET, \
&&OPCODE_GET, \
&&OPCODE_SET_NAMED, \
&&OPCODE_GET_NAMED, \
&&OPCODE_SET_MEMBER, \
&&OPCODE_GET_MEMBER, \
&&OPCODE_ASSIGN, \
&&OPCODE_ASSIGN_TRUE, \
&&OPCODE_ASSIGN_FALSE, \
&&OPCODE_ASSIGN_TYPED_BUILTIN, \
&&OPCODE_ASSIGN_TYPED_NATIVE, \
&&OPCODE_ASSIGN_TYPED_SCRIPT, \
&&OPCODE_CAST_TO_BUILTIN, \
&&OPCODE_CAST_TO_NATIVE, \
&&OPCODE_CAST_TO_SCRIPT, \
&&OPCODE_CONSTRUCT, \
&&OPCODE_CONSTRUCT_ARRAY, \
&&OPCODE_CONSTRUCT_DICTIONARY, \
&&OPCODE_CALL, \
&&OPCODE_CALL_RETURN, \
&&OPCODE_CALL_BUILT_IN, \
&&OPCODE_CALL_SELF, \
&&OPCODE_CALL_SELF_BASE, \
&&OPCODE_YIELD, \
&&OPCODE_YIELD_SIGNAL, \
&&OPCODE_YIELD_RESUME, \
&&OPCODE_JUMP, \
&&OPCODE_JUMP_IF, \
&&OPCODE_JUMP_IF_NOT, \
&&OPCODE_JUMP_TO_DEF_ARGUMENT, \
&&OPCODE_RETURN, \
&&OPCODE_ITERATE_BEGIN, \
&&OPCODE_ITERATE, \
&&OPCODE_ASSERT, \
&&OPCODE_BREAKPOINT, \
&&OPCODE_LINE, \
&&OPCODE_END \
};
#define OPCODE(m_op) \
m_op:
#define OPCODE_WHILE(m_test)
#define OPCODES_END \
OPSEXIT:
#define OPCODES_OUT \
OPSOUT:
#define DISPATCH_OPCODE goto *switch_table_ops[_code_ptr[ip]]
#define OPCODE_SWITCH(m_test) DISPATCH_OPCODE;
#define OPCODE_BREAK goto OPSEXIT
#define OPCODE_OUT goto OPSOUT
#else
#define OPCODES_TABLE
#define OPCODE(m_op) case m_op:
#define OPCODE_WHILE(m_test) while (m_test)
#define OPCODES_END
#define OPCODES_OUT
#define DISPATCH_OPCODE continue
#define OPCODE_SWITCH(m_test) switch (m_test)
#define OPCODE_BREAK break
#define OPCODE_OUT break
#endif
Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_args, int p_argcount, Variant::CallError &r_err, CallState *p_state) {
OPCODES_TABLE;
if (!_code_ptr) {
return Variant();
}
r_err.error = Variant::CallError::CALL_OK;
Variant self;
Variant static_ref;
Variant retvalue;
Variant *stack = nullptr;
Variant **call_args;
int defarg = 0;
#ifdef DEBUG_ENABLED
//GDScriptLanguage::get_singleton()->calls++;
#endif
uint32_t alloca_size = 0;
GDScript *script;
int ip = 0;
int line = _initial_line;
if (p_state) {
//use existing (supplied) state (yielded)
stack = (Variant *)p_state->stack.ptr();
call_args = (Variant **)&p_state->stack.ptr()[sizeof(Variant) * p_state->stack_size]; //ptr() to avoid bounds check
line = p_state->line;
ip = p_state->ip;
alloca_size = p_state->stack.size();
script = p_state->script;
p_instance = p_state->instance;
defarg = p_state->defarg;
self = p_state->self;
//stack[p_state->result_pos]=p_state->result; //assign stack with result
} else {
if (p_argcount != _argument_count) {
if (p_argcount > _argument_count) {
r_err.error = Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_err.argument = _argument_count;
return Variant();
} else if (p_argcount < _argument_count - _default_arg_count) {
r_err.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_err.argument = _argument_count - _default_arg_count;
return Variant();
} else {
defarg = _argument_count - p_argcount;
}
}
alloca_size = sizeof(Variant *) * _call_size + sizeof(Variant) * _stack_size;
if (alloca_size) {
uint8_t *aptr = (uint8_t *)alloca(alloca_size);
if (_stack_size) {
stack = (Variant *)aptr;
for (int i = 0; i < p_argcount; i++) {
if (!argument_types[i].has_type) {
memnew_placement(&stack[i], Variant(*p_args[i]));
continue;
}
if (!argument_types[i].is_type(*p_args[i], true)) {
if (argument_types[i].is_type(Variant(), true)) {
memnew_placement(&stack[i], Variant);
continue;
} else {
r_err.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_err.argument = i;
r_err.expected = argument_types[i].kind == GDScriptDataType::BUILTIN ? argument_types[i].builtin_type : Variant::OBJECT;
return Variant();
}
}
if (argument_types[i].kind == GDScriptDataType::BUILTIN) {
Variant arg = Variant::construct(argument_types[i].builtin_type, &p_args[i], 1, r_err);
memnew_placement(&stack[i], Variant(arg));
} else {
memnew_placement(&stack[i], Variant(*p_args[i]));
}
}
for (int i = p_argcount; i < _stack_size; i++) {
memnew_placement(&stack[i], Variant);
}
} else {
stack = nullptr;
}
if (_call_size) {
call_args = (Variant **)&aptr[sizeof(Variant) * _stack_size];
} else {
call_args = nullptr;
}
} else {
stack = nullptr;
call_args = nullptr;
}
if (p_instance) {
self = p_instance->owner;
script = p_instance->script.ptr();
} else {
script = _script;
}
}
#ifdef DEBUG_ENABLED
Variant instance = p_instance;
#endif
static_ref = script;
String err_text;
#ifdef DEBUG_ENABLED
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->enter_function(p_instance, this, stack, &ip, &line);
}
#define GD_ERR_BREAK(m_cond) \
{ \
if (unlikely(m_cond)) { \
_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Condition ' " _STR(m_cond) " ' is true. Breaking..:"); \
OPCODE_BREAK; \
} \
}
#define CHECK_SPACE(m_space) \
GD_ERR_BREAK((ip + m_space) > _code_size)
#define GET_VARIANT_PTR(m_v, m_code_ofs) \
Variant *m_v; \
m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, script, self, static_ref, stack, err_text); \
if (unlikely(!m_v)) \
OPCODE_BREAK;
#else
#define GD_ERR_BREAK(m_cond)
#define CHECK_SPACE(m_space)
#define GET_VARIANT_PTR(m_v, m_code_ofs) \
Variant *m_v; \
m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, script, self, static_ref, stack, err_text);
#endif
#ifdef DEBUG_ENABLED
uint64_t function_start_time = 0;
uint64_t function_call_time = 0;
if (GDScriptLanguage::get_singleton()->profiling) {
function_start_time = OS::get_singleton()->get_ticks_usec();
function_call_time = 0;
profile.call_count++;
profile.frame_call_count++;
}
bool exit_ok = false;
bool yielded = false;
#endif
#ifdef DEBUG_ENABLED
OPCODE_WHILE(ip < _code_size) {
int last_opcode = _code_ptr[ip];
#else
OPCODE_WHILE(true) {
#endif
OPCODE_SWITCH(_code_ptr[ip]) {
OPCODE(OPCODE_OPERATOR) {
CHECK_SPACE(5);
bool valid;
Variant::Operator op = (Variant::Operator)_code_ptr[ip + 1];
GD_ERR_BREAK(op >= Variant::OP_MAX);
GET_VARIANT_PTR(a, 2);
GET_VARIANT_PTR(b, 3);
GET_VARIANT_PTR(dst, 4);
#ifdef DEBUG_ENABLED
Variant ret;
Variant::evaluate(op, *a, *b, ret, valid);
#else
Variant::evaluate(op, *a, *b, *dst, valid);
#endif
#ifdef DEBUG_ENABLED
if (!valid) {
if (ret.get_type() == Variant::STRING) {
//return a string when invalid with the error
err_text = ret;
err_text += " in operator '" + Variant::get_operator_name(op) + "'.";
} else {
err_text = "Invalid operands '" + Variant::get_type_name(a->get_type()) + "' and '" + Variant::get_type_name(b->get_type()) + "' in operator '" + Variant::get_operator_name(op) + "'.";
}
OPCODE_BREAK;
}
*dst = ret;
#endif
ip += 5;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_EXTENDS_TEST) {
CHECK_SPACE(4);
GET_VARIANT_PTR(a, 1);
GET_VARIANT_PTR(b, 2);
GET_VARIANT_PTR(dst, 3);
#ifdef DEBUG_ENABLED
if (a->is_invalid_object()) {
err_text = "Left operand of 'is' was already freed.";
OPCODE_BREAK;
}
if (b->is_invalid_object()) {
err_text = "Right operand of 'is' is not a class.";
OPCODE_BREAK;
}
#endif
bool extends_ok = false;
if (a->get_type() == Variant::OBJECT && a->operator Object *() != nullptr) {
Object *obj_A = *a;
Object *obj_B = *b;
GDScript *scr_B = Object::cast_to<GDScript>(obj_B);
if (scr_B) {
//if B is a script, the only valid condition is that A has an instance which inherits from the script
//in other situation, this shoul return false.
if (obj_A->get_script_instance() && obj_A->get_script_instance()->get_language() == GDScriptLanguage::get_singleton()) {
GDScript *cmp = static_cast<GDScript *>(obj_A->get_script_instance()->get_script().ptr());
//bool found=false;
while (cmp) {
if (cmp == scr_B) {
//inherits from script, all ok
extends_ok = true;
break;
}
cmp = cmp->_base;
}
}
} else {
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(obj_B);
#ifdef DEBUG_ENABLED
if (!nc) {
err_text = "Right operand of 'is' is not a class (type: '" + obj_B->get_class() + "').";
OPCODE_BREAK;
}
#endif
extends_ok = ClassDB::is_parent_class(obj_A->get_class_name(), nc->get_name());
}
}
*dst = extends_ok;
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_IS_BUILTIN) {
CHECK_SPACE(4);
GET_VARIANT_PTR(value, 1);
Variant::Type var_type = (Variant::Type)_code_ptr[ip + 2];
GET_VARIANT_PTR(dst, 3);
GD_ERR_BREAK(var_type < 0 || var_type >= Variant::VARIANT_MAX);
*dst = value->get_type() == var_type;
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_SET) {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst, 1);
GET_VARIANT_PTR(index, 2);
GET_VARIANT_PTR(value, 3);
bool valid;
dst->set(*index, *value, &valid);
#ifdef DEBUG_ENABLED
if (!valid) {
String v = index->operator String();
if (v != "") {
v = "'" + v + "'";
} else {
v = "of type '" + _get_var_type(index) + "'";
}
err_text = "Invalid set index " + v + " (on base: '" + _get_var_type(dst) + "') with value of type '" + _get_var_type(value) + "'";
OPCODE_BREAK;
}
#endif
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_GET) {
CHECK_SPACE(3);
GET_VARIANT_PTR(src, 1);
GET_VARIANT_PTR(index, 2);
GET_VARIANT_PTR(dst, 3);
bool valid;
#ifdef DEBUG_ENABLED
//allow better error message in cases where src and dst are the same stack position
Variant ret = src->get(*index, &valid);
#else
*dst = src->get(*index, &valid);
#endif
#ifdef DEBUG_ENABLED
if (!valid) {
String v = index->operator String();
if (v != "") {
v = "'" + v + "'";
} else {
v = "of type '" + _get_var_type(index) + "'";
}
err_text = "Invalid get index " + v + " (on base: '" + _get_var_type(src) + "').";
OPCODE_BREAK;
}
*dst = ret;
#endif
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_SET_NAMED) {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst, 1);
GET_VARIANT_PTR(value, 3);
int indexname = _code_ptr[ip + 2];
GD_ERR_BREAK(indexname < 0 || indexname >= _global_names_count);
const StringName *index = &_global_names_ptr[indexname];
bool valid;
dst->set_named(*index, *value, &valid);
#ifdef DEBUG_ENABLED
if (!valid) {
String err_type;
err_text = "Invalid set index '" + String(*index) + "' (on base: '" + _get_var_type(dst) + "') with value of type '" + _get_var_type(value) + "'.";
OPCODE_BREAK;
}
#endif
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_GET_NAMED) {
CHECK_SPACE(4);
GET_VARIANT_PTR(src, 1);
GET_VARIANT_PTR(dst, 3);
int indexname = _code_ptr[ip + 2];
GD_ERR_BREAK(indexname < 0 || indexname >= _global_names_count);
const StringName *index = &_global_names_ptr[indexname];
bool valid;
#ifdef DEBUG_ENABLED
//allow better error message in cases where src and dst are the same stack position
Variant ret = src->get_named(*index, &valid);
#else
*dst = src->get_named(*index, &valid);
#endif
#ifdef DEBUG_ENABLED
if (!valid) {
if (src->has_method(*index)) {
err_text = "Invalid get index '" + index->operator String() + "' (on base: '" + _get_var_type(src) + "'). Did you mean '." + index->operator String() + "()' or funcref(obj, \"" + index->operator String() + "\") ?";
} else {
err_text = "Invalid get index '" + index->operator String() + "' (on base: '" + _get_var_type(src) + "').";
}
OPCODE_BREAK;
}
*dst = ret;
#endif
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_SET_MEMBER) {
CHECK_SPACE(3);
int indexname = _code_ptr[ip + 1];
GD_ERR_BREAK(indexname < 0 || indexname >= _global_names_count);
const StringName *index = &_global_names_ptr[indexname];
GET_VARIANT_PTR(src, 2);
bool valid;
#ifndef DEBUG_ENABLED
ClassDB::set_property(p_instance->owner, *index, *src, &valid);
#else
bool ok = ClassDB::set_property(p_instance->owner, *index, *src, &valid);
if (!ok) {
err_text = "Internal error setting property: " + String(*index);
OPCODE_BREAK;
} else if (!valid) {
err_text = "Error setting property '" + String(*index) + "' with value of type " + Variant::get_type_name(src->get_type()) + ".";
OPCODE_BREAK;
}
#endif
ip += 3;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_GET_MEMBER) {
CHECK_SPACE(3);
int indexname = _code_ptr[ip + 1];
GD_ERR_BREAK(indexname < 0 || indexname >= _global_names_count);
const StringName *index = &_global_names_ptr[indexname];
GET_VARIANT_PTR(dst, 2);
#ifndef DEBUG_ENABLED
ClassDB::get_property(p_instance->owner, *index, *dst);
#else
bool ok = ClassDB::get_property(p_instance->owner, *index, *dst);
if (!ok) {
err_text = "Internal error getting property: " + String(*index);
OPCODE_BREAK;
}
#endif
ip += 3;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN) {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst, 1);
GET_VARIANT_PTR(src, 2);
*dst = *src;
ip += 3;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN_TRUE) {
CHECK_SPACE(2);
GET_VARIANT_PTR(dst, 1);
*dst = true;
ip += 2;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN_FALSE) {
CHECK_SPACE(2);
GET_VARIANT_PTR(dst, 1);
*dst = false;
ip += 2;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN_TYPED_BUILTIN) {
CHECK_SPACE(4);
GET_VARIANT_PTR(dst, 2);
GET_VARIANT_PTR(src, 3);
Variant::Type var_type = (Variant::Type)_code_ptr[ip + 1];
GD_ERR_BREAK(var_type < 0 || var_type >= Variant::VARIANT_MAX);
if (src->get_type() != var_type) {
#ifdef DEBUG_ENABLED
if (Variant::can_convert_strict(src->get_type(), var_type)) {
#endif // DEBUG_ENABLED
Variant::CallError ce;
*dst = Variant::construct(var_type, const_cast<const Variant **>(&src), 1, ce);
} else {
#ifdef DEBUG_ENABLED
err_text = "Trying to assign value of type '" + Variant::get_type_name(src->get_type()) +
"' to a variable of type '" + Variant::get_type_name(var_type) + "'.";
OPCODE_BREAK;
}
} else {
#endif // DEBUG_ENABLED
*dst = *src;
}
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN_TYPED_NATIVE) {
CHECK_SPACE(4);
GET_VARIANT_PTR(dst, 2);
GET_VARIANT_PTR(src, 3);
#ifdef DEBUG_ENABLED
GET_VARIANT_PTR(type, 1);
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(type->operator Object *());
GD_ERR_BREAK(!nc);
if (src->get_type() != Variant::OBJECT && src->get_type() != Variant::NIL) {
err_text = "Trying to assign value of type '" + Variant::get_type_name(src->get_type()) +
"' to a variable of type '" + nc->get_name() + "'.";
OPCODE_BREAK;
}
Object *src_obj = src->operator Object *();
if (src_obj && !ClassDB::is_parent_class(src_obj->get_class_name(), nc->get_name())) {
err_text = "Trying to assign value of type '" + src_obj->get_class_name() +
"' to a variable of type '" + nc->get_name() + "'.";
OPCODE_BREAK;
}
#endif // DEBUG_ENABLED
*dst = *src;
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSIGN_TYPED_SCRIPT) {
CHECK_SPACE(4);
GET_VARIANT_PTR(dst, 2);
GET_VARIANT_PTR(src, 3);
#ifdef DEBUG_ENABLED
GET_VARIANT_PTR(type, 1);
Script *base_type = Object::cast_to<Script>(type->operator Object *());
GD_ERR_BREAK(!base_type);
if (src->get_type() != Variant::OBJECT && src->get_type() != Variant::NIL) {
err_text = "Trying to assign a non-object value to a variable of type '" + base_type->get_path().get_file() + "'.";
OPCODE_BREAK;
}
if (src->get_type() != Variant::NIL && src->operator Object *() != nullptr) {
ScriptInstance *scr_inst = src->operator Object *()->get_script_instance();
if (!scr_inst) {
err_text = "Trying to assign value of type '" + src->operator Object *()->get_class_name() +
"' to a variable of type '" + base_type->get_path().get_file() + "'.";
OPCODE_BREAK;
}
Script *src_type = src->operator Object *()->get_script_instance()->get_script().ptr();
bool valid = false;
while (src_type) {
if (src_type == base_type) {
valid = true;
break;
}
src_type = src_type->get_base_script().ptr();
}
if (!valid) {
err_text = "Trying to assign value of type '" + src->operator Object *()->get_script_instance()->get_script()->get_path().get_file() +
"' to a variable of type '" + base_type->get_path().get_file() + "'.";
OPCODE_BREAK;
}
}
#endif // DEBUG_ENABLED
*dst = *src;
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CAST_TO_BUILTIN) {
CHECK_SPACE(4);
Variant::Type to_type = (Variant::Type)_code_ptr[ip + 1];
GET_VARIANT_PTR(src, 2);
GET_VARIANT_PTR(dst, 3);
GD_ERR_BREAK(to_type < 0 || to_type >= Variant::VARIANT_MAX);
Variant::CallError err;
*dst = Variant::construct(to_type, (const Variant **)&src, 1, err);
#ifdef DEBUG_ENABLED
if (src->is_invalid_object()) {
err_text = "Trying to cast a deleted object.";
OPCODE_BREAK;
}
if (err.error != Variant::CallError::CALL_OK) {
err_text = "Invalid cast: could not convert value to '" + Variant::get_type_name(to_type) + "'.";
OPCODE_BREAK;
}
#endif
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CAST_TO_NATIVE) {
CHECK_SPACE(4);
GET_VARIANT_PTR(to_type, 1);
GET_VARIANT_PTR(src, 2);
GET_VARIANT_PTR(dst, 3);
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(to_type->operator Object *());
GD_ERR_BREAK(!nc);
#ifdef DEBUG_ENABLED
if (src->is_invalid_object()) {
err_text = "Trying to cast a deleted object.";
OPCODE_BREAK;
}
if (src->get_type() != Variant::OBJECT && src->get_type() != Variant::NIL) {
err_text = "Invalid cast: can't convert a non-object value to an object type.";
OPCODE_BREAK;
}
#endif
Object *src_obj = src->operator Object *();
if (src_obj && !ClassDB::is_parent_class(src_obj->get_class_name(), nc->get_name())) {
*dst = Variant(); // invalid cast, assign NULL
} else {
*dst = *src;
}
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CAST_TO_SCRIPT) {
CHECK_SPACE(4);
GET_VARIANT_PTR(to_type, 1);
GET_VARIANT_PTR(src, 2);
GET_VARIANT_PTR(dst, 3);
Script *base_type = Object::cast_to<Script>(to_type->operator Object *());
GD_ERR_BREAK(!base_type);
#ifdef DEBUG_ENABLED
if (src->is_invalid_object()) {
err_text = "Trying to cast a deleted object.";
OPCODE_BREAK;
}
if (src->get_type() != Variant::OBJECT && src->get_type() != Variant::NIL) {
err_text = "Trying to assign a non-object value to a variable of type '" + base_type->get_path().get_file() + "'.";
OPCODE_BREAK;
}
#endif
bool valid = false;
if (src->get_type() != Variant::NIL && src->operator Object *() != nullptr) {
ScriptInstance *scr_inst = src->operator Object *()->get_script_instance();
if (scr_inst) {
Script *src_type = src->operator Object *()->get_script_instance()->get_script().ptr();
while (src_type) {
if (src_type == base_type) {
valid = true;
break;
}
src_type = src_type->get_base_script().ptr();
}
}
}
if (valid) {
*dst = *src; // Valid cast, copy the source object
} else {
*dst = Variant(); // invalid cast, assign NULL
}
ip += 4;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CONSTRUCT) {
CHECK_SPACE(2);
Variant::Type t = Variant::Type(_code_ptr[ip + 1]);
int argc = _code_ptr[ip + 2];
CHECK_SPACE(argc + 2);
Variant **argptrs = call_args;
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(v, 3 + i);
argptrs[i] = v;
}
GET_VARIANT_PTR(dst, 3 + argc);
Variant::CallError err;
*dst = Variant::construct(t, (const Variant **)argptrs, argc, err);
#ifdef DEBUG_ENABLED
if (err.error != Variant::CallError::CALL_OK) {
err_text = _get_call_error(err, "'" + Variant::get_type_name(t) + "' constructor", (const Variant **)argptrs);
OPCODE_BREAK;
}
#endif
ip += 4 + argc;
//construct a basic type
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CONSTRUCT_ARRAY) {
CHECK_SPACE(1);
int argc = _code_ptr[ip + 1];
Array array; //arrays are always shared
array.resize(argc);
CHECK_SPACE(argc + 2);
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(v, 2 + i);
array[i] = *v;
}
GET_VARIANT_PTR(dst, 2 + argc);
*dst = array;
ip += 3 + argc;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CONSTRUCT_DICTIONARY) {
CHECK_SPACE(1);
int argc = _code_ptr[ip + 1];
Dictionary dict; //arrays are always shared
CHECK_SPACE(argc * 2 + 2);
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(k, 2 + i * 2 + 0);
GET_VARIANT_PTR(v, 2 + i * 2 + 1);
dict[*k] = *v;
}
GET_VARIANT_PTR(dst, 2 + argc * 2);
*dst = dict;
ip += 3 + argc * 2;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CALL_RETURN)
OPCODE(OPCODE_CALL) {
CHECK_SPACE(4);
bool call_ret = _code_ptr[ip] == OPCODE_CALL_RETURN;
int argc = _code_ptr[ip + 1];
GET_VARIANT_PTR(base, 2);
int nameg = _code_ptr[ip + 3];
GD_ERR_BREAK(nameg < 0 || nameg >= _global_names_count);
const StringName *methodname = &_global_names_ptr[nameg];
GD_ERR_BREAK(argc < 0);
ip += 4;
CHECK_SPACE(argc + 1);
Variant **argptrs = call_args;
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(v, i);
argptrs[i] = v;
}
#ifdef DEBUG_ENABLED
uint64_t call_time = 0;
if (GDScriptLanguage::get_singleton()->profiling) {
call_time = OS::get_singleton()->get_ticks_usec();
}
#endif
Variant::CallError err;
if (call_ret) {
GET_VARIANT_PTR(ret, argc);
base->call_ptr(*methodname, (const Variant **)argptrs, argc, ret, err);
} else {
base->call_ptr(*methodname, (const Variant **)argptrs, argc, nullptr, err);
}
#ifdef DEBUG_ENABLED
if (GDScriptLanguage::get_singleton()->profiling) {
function_call_time += OS::get_singleton()->get_ticks_usec() - call_time;
}
if (err.error != Variant::CallError::CALL_OK) {
String methodstr = *methodname;
String basestr = _get_var_type(base);
if (methodstr == "call") {
if (argc >= 1) {
methodstr = String(*argptrs[0]) + " (via call)";
if (err.error == Variant::CallError::CALL_ERROR_INVALID_ARGUMENT) {
err.argument += 1;
}
}
} else if (methodstr == "free") {
if (err.error == Variant::CallError::CALL_ERROR_INVALID_METHOD) {
if (base->is_ref()) {
err_text = "Attempted to free a reference.";
OPCODE_BREAK;
} else if (base->get_type() == Variant::OBJECT) {
err_text = "Attempted to free a locked object (calling or emitting).";
OPCODE_BREAK;
}
}
} else if (methodstr == "call_recursive" && basestr == "TreeItem") {
if (argc >= 1) {
methodstr = String(*argptrs[0]) + " (via TreeItem.call_recursive)";
if (err.error == Variant::CallError::CALL_ERROR_INVALID_ARGUMENT) {
err.argument += 1;
}
}
}
err_text = _get_call_error(err, "function '" + methodstr + "' in base '" + basestr + "'", (const Variant **)argptrs);
OPCODE_BREAK;
}
#endif
//_call_func(NULL,base,*methodname,ip,argc,p_instance,stack);
ip += argc + 1;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CALL_BUILT_IN) {
CHECK_SPACE(4);
GDScriptFunctions::Function func = GDScriptFunctions::Function(_code_ptr[ip + 1]);
int argc = _code_ptr[ip + 2];
GD_ERR_BREAK(argc < 0);
ip += 3;
CHECK_SPACE(argc + 1);
Variant **argptrs = call_args;
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(v, i);
argptrs[i] = v;
}
GET_VARIANT_PTR(dst, argc);
Variant::CallError err;
GDScriptFunctions::call(func, (const Variant **)argptrs, argc, *dst, err);
#ifdef DEBUG_ENABLED
if (err.error != Variant::CallError::CALL_OK) {
String methodstr = GDScriptFunctions::get_func_name(func);
if (dst->get_type() == Variant::STRING) {
//call provided error string
err_text = "Error calling built-in function '" + methodstr + "': " + String(*dst);
} else {
err_text = _get_call_error(err, "built-in function '" + methodstr + "'", (const Variant **)argptrs);
}
OPCODE_BREAK;
}
#endif
ip += argc + 1;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_CALL_SELF) {
OPCODE_BREAK;
}
OPCODE(OPCODE_CALL_SELF_BASE) {
CHECK_SPACE(2);
int self_fun = _code_ptr[ip + 1];
#ifdef DEBUG_ENABLED
if (self_fun < 0 || self_fun >= _global_names_count) {
err_text = "compiler bug, function name not found";
OPCODE_BREAK;
}
#endif
const StringName *methodname = &_global_names_ptr[self_fun];
int argc = _code_ptr[ip + 2];
CHECK_SPACE(2 + argc + 1);
Variant **argptrs = call_args;
for (int i = 0; i < argc; i++) {
GET_VARIANT_PTR(v, i + 3);
argptrs[i] = v;
}
GET_VARIANT_PTR(dst, argc + 3);
const GDScript *gds = _script;
const Map<StringName, GDScriptFunction *>::Element *E = nullptr;
while (gds->base.ptr()) {
gds = gds->base.ptr();
E = gds->member_functions.find(*methodname);
if (E) {
break;
}
}
Variant::CallError err;
if (E) {
*dst = E->get()->call(p_instance, (const Variant **)argptrs, argc, err);
} else if (gds->native.ptr()) {
if (*methodname != GDScriptLanguage::get_singleton()->strings._init) {
MethodBind *mb = ClassDB::get_method(gds->native->get_name(), *methodname);
if (!mb) {
err.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
} else {
*dst = mb->call(p_instance->owner, (const Variant **)argptrs, argc, err);
}
} else {
err.error = Variant::CallError::CALL_OK;
}
} else {
if (*methodname != GDScriptLanguage::get_singleton()->strings._init) {
err.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
} else {
err.error = Variant::CallError::CALL_OK;
}
}
if (err.error != Variant::CallError::CALL_OK) {
String methodstr = *methodname;
err_text = _get_call_error(err, "function '" + methodstr + "'", (const Variant **)argptrs);
OPCODE_BREAK;
}
ip += 4 + argc;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_YIELD)
OPCODE(OPCODE_YIELD_SIGNAL) {
int ipofs = 1;
if (_code_ptr[ip] == OPCODE_YIELD_SIGNAL) {
CHECK_SPACE(4);
ipofs += 2;
} else {
CHECK_SPACE(2);
}
Ref<GDScriptFunctionState> gdfs = memnew(GDScriptFunctionState);
gdfs->function = this;
gdfs->state.stack.resize(alloca_size);
//copy variant stack
for (int i = 0; i < _stack_size; i++) {
memnew_placement(&gdfs->state.stack.write[sizeof(Variant) * i], Variant(stack[i]));
}
gdfs->state.stack_size = _stack_size;
gdfs->state.self = self;
gdfs->state.alloca_size = alloca_size;
gdfs->state.ip = ip + ipofs;
gdfs->state.line = line;
gdfs->state.script = _script;
GDScriptLanguage::singleton->lock.lock();
_script->pending_func_states.add(&gdfs->scripts_list);
if (p_instance) {
gdfs->state.instance = p_instance;
p_instance->pending_func_states.add(&gdfs->instances_list);
} else {
gdfs->state.instance = nullptr;
}
GDScriptLanguage::singleton->lock.unlock();
#ifdef DEBUG_ENABLED
gdfs->state.function_name = name;
gdfs->state.script_path = _script->get_path();
#endif
//gdfs->state.result_pos=ip+ipofs-1;
gdfs->state.defarg = defarg;
gdfs->function = this;
retvalue = gdfs;
if (_code_ptr[ip] == OPCODE_YIELD_SIGNAL) {
//do the oneshot connect
GET_VARIANT_PTR(argobj, 1);
GET_VARIANT_PTR(argname, 2);
#ifdef DEBUG_ENABLED
if (argobj->get_type() != Variant::OBJECT) {
err_text = "First argument of yield() not of type object.";
OPCODE_BREAK;
}
if (argname->get_type() != Variant::STRING) {
err_text = "Second argument of yield() not a string (for signal name).";
OPCODE_BREAK;
}
#endif
Object *obj = argobj->operator Object *();
String signal = argname->operator String();
if (argobj->is_invalid_object()) {
err_text = "First argument of yield() is a previously freed instance.";
OPCODE_BREAK;
}
#ifdef DEBUG_ENABLED
if (!obj) {
err_text = "First argument of yield() is null.";
OPCODE_BREAK;
}
if (signal.length() == 0) {
err_text = "Second argument of yield() is an empty string (for signal name).";
OPCODE_BREAK;
}
Error err = obj->connect(signal, gdfs.ptr(), "_signal_callback", varray(gdfs), Object::CONNECT_ONESHOT);
if (err != OK) {
err_text = "Error connecting to signal: " + signal + " during yield().";
OPCODE_BREAK;
}
#else
obj->connect(signal, gdfs.ptr(), "_signal_callback", varray(gdfs), Object::CONNECT_ONESHOT);
#endif
}
#ifdef DEBUG_ENABLED
exit_ok = true;
yielded = true;
#endif
OPCODE_BREAK;
}
OPCODE(OPCODE_YIELD_RESUME) {
CHECK_SPACE(2);
#ifdef DEBUG_ENABLED
if (!p_state) {
err_text = ("Invalid Resume (bug?)");
OPCODE_BREAK;
}
#endif
GET_VARIANT_PTR(result, 1);
*result = p_state->result;
ip += 2;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_JUMP) {
CHECK_SPACE(2);
int to = _code_ptr[ip + 1];
GD_ERR_BREAK(to < 0 || to > _code_size);
ip = to;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_JUMP_IF) {
CHECK_SPACE(3);
GET_VARIANT_PTR(test, 1);
bool result = test->booleanize();
if (result) {
int to = _code_ptr[ip + 2];
GD_ERR_BREAK(to < 0 || to > _code_size);
ip = to;
} else {
ip += 3;
}
}
DISPATCH_OPCODE;
OPCODE(OPCODE_JUMP_IF_NOT) {
CHECK_SPACE(3);
GET_VARIANT_PTR(test, 1);
bool result = test->booleanize();
if (!result) {
int to = _code_ptr[ip + 2];
GD_ERR_BREAK(to < 0 || to > _code_size);
ip = to;
} else {
ip += 3;
}
}
DISPATCH_OPCODE;
OPCODE(OPCODE_JUMP_TO_DEF_ARGUMENT) {
CHECK_SPACE(2);
ip = _default_arg_ptr[defarg];
}
DISPATCH_OPCODE;
OPCODE(OPCODE_RETURN) {
CHECK_SPACE(2);
GET_VARIANT_PTR(r, 1);
retvalue = *r;
#ifdef DEBUG_ENABLED
exit_ok = true;
#endif
OPCODE_BREAK;
}
OPCODE(OPCODE_ITERATE_BEGIN) {
CHECK_SPACE(8); //space for this a regular iterate
GET_VARIANT_PTR(counter, 1);
GET_VARIANT_PTR(container, 2);
bool valid;
if (!container->iter_init(*counter, valid)) {
#ifdef DEBUG_ENABLED
if (!valid) {
err_text = "Unable to iterate on object of type '" + Variant::get_type_name(container->get_type()) + "'.";
OPCODE_BREAK;
}
#endif
int jumpto = _code_ptr[ip + 3];
GD_ERR_BREAK(jumpto < 0 || jumpto > _code_size);
ip = jumpto;
} else {
GET_VARIANT_PTR(iterator, 4);
*iterator = container->iter_get(*counter, valid);
#ifdef DEBUG_ENABLED
if (!valid) {
err_text = "Unable to obtain iterator object of type '" + Variant::get_type_name(container->get_type()) + "'.";
OPCODE_BREAK;
}
#endif
ip += 5; //skip regular iterate which is always next
}
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ITERATE) {
CHECK_SPACE(4);
GET_VARIANT_PTR(counter, 1);
GET_VARIANT_PTR(container, 2);
bool valid;
if (!container->iter_next(*counter, valid)) {
#ifdef DEBUG_ENABLED
if (!valid) {
err_text = "Unable to iterate on object of type '" + Variant::get_type_name(container->get_type()) + "' (type changed since first iteration?).";
OPCODE_BREAK;
}
#endif
int jumpto = _code_ptr[ip + 3];
GD_ERR_BREAK(jumpto < 0 || jumpto > _code_size);
ip = jumpto;
} else {
GET_VARIANT_PTR(iterator, 4);
*iterator = container->iter_get(*counter, valid);
#ifdef DEBUG_ENABLED
if (!valid) {
err_text = "Unable to obtain iterator object of type '" + Variant::get_type_name(container->get_type()) + "' (but was obtained on first iteration?).";
OPCODE_BREAK;
}
#endif
ip += 5; //loop again
}
}
DISPATCH_OPCODE;
OPCODE(OPCODE_ASSERT) {
CHECK_SPACE(3);
#ifdef DEBUG_ENABLED
GET_VARIANT_PTR(test, 1);
bool result = test->booleanize();
if (!result) {
String message_str;
if (_code_ptr[ip + 2] != 0) {
GET_VARIANT_PTR(message, 2);
message_str = *message;
}
if (message_str.empty()) {
err_text = "Assertion failed.";
} else {
err_text = "Assertion failed: " + message_str;
}
OPCODE_BREAK;
}
#endif
ip += 3;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_BREAKPOINT) {
#ifdef DEBUG_ENABLED
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break("Breakpoint Statement", true);
}
#endif
ip += 1;
}
DISPATCH_OPCODE;
OPCODE(OPCODE_LINE) {
CHECK_SPACE(2);
line = _code_ptr[ip + 1];
ip += 2;
if (ScriptDebugger::get_singleton()) {
// line
bool do_break = false;
if (ScriptDebugger::get_singleton()->get_lines_left() > 0) {
if (ScriptDebugger::get_singleton()->get_depth() <= 0) {
ScriptDebugger::get_singleton()->set_lines_left(ScriptDebugger::get_singleton()->get_lines_left() - 1);
}
if (ScriptDebugger::get_singleton()->get_lines_left() <= 0) {
do_break = true;
}
}
if (ScriptDebugger::get_singleton()->is_breakpoint(line, source)) {
do_break = true;
}
if (do_break) {
GDScriptLanguage::get_singleton()->debug_break("Breakpoint", true);
}
ScriptDebugger::get_singleton()->line_poll();
}
}
DISPATCH_OPCODE;
OPCODE(OPCODE_END) {
#ifdef DEBUG_ENABLED
exit_ok = true;
#endif
OPCODE_BREAK;
}
#if 0 // Enable for debugging.
default: {
err_text = "Illegal opcode " + itos(_code_ptr[ip]) + " at address " + itos(ip);
OPCODE_BREAK;
}
#endif
}
OPCODES_END
#ifdef DEBUG_ENABLED
if (exit_ok) {
OPCODE_OUT;
}
//error
// function, file, line, error, explanation
String err_file;
if (p_instance && !instance.is_invalid_object() && p_instance->script->is_valid() && p_instance->script->path != "") {
err_file = p_instance->script->path;
} else if (script) {
err_file = script->path;
}
if (err_file == "") {
err_file = "<built-in>";
}
String err_func = name;
if (p_instance && !instance.is_invalid_object() && p_instance->script->is_valid() && p_instance->script->name != "") {
err_func = p_instance->script->name + "." + err_func;
}
int err_line = line;
if (err_text == "") {
err_text = "Internal Script Error! - opcode #" + itos(last_opcode) + " (report please).";
}
if (!GDScriptLanguage::get_singleton()->debug_break(err_text, false)) {
// debugger break did not happen
_err_print_error(err_func.utf8().get_data(), err_file.utf8().get_data(), err_line, err_text.utf8().get_data(), ERR_HANDLER_SCRIPT);
}
#endif
OPCODE_OUT;
}
OPCODES_OUT
#ifdef DEBUG_ENABLED
if (GDScriptLanguage::get_singleton()->profiling) {
uint64_t time_taken = OS::get_singleton()->get_ticks_usec() - function_start_time;
profile.total_time += time_taken;
profile.self_time += time_taken - function_call_time;
profile.frame_total_time += time_taken;
profile.frame_self_time += time_taken - function_call_time;
GDScriptLanguage::get_singleton()->script_frame_time += time_taken - function_call_time;
}
// Check if this is the last time the function is resuming from yield
// Will be true if never yielded as well
// When it's the last resume it will postpone the exit from stack,
// so the debugger knows which function triggered the resume of the next function (if any)
if (!p_state || yielded) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->exit_function();
}
#endif
if (_stack_size) {
//free stack
for (int i = 0; i < _stack_size; i++) {
stack[i].~Variant();
}
}
#ifdef DEBUG_ENABLED
}
#endif
return retvalue;
}
const int *GDScriptFunction::get_code() const {
return _code_ptr;
}
int GDScriptFunction::get_code_size() const {
return _code_size;
}
Variant GDScriptFunction::get_constant(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, constants.size(), "<errconst>");
return constants[p_idx];
}
StringName GDScriptFunction::get_global_name(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, global_names.size(), "<errgname>");
return global_names[p_idx];
}
int GDScriptFunction::get_default_argument_count() const {
return _default_arg_count;
}
int GDScriptFunction::get_default_argument_addr(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, default_arguments.size(), -1);
return default_arguments[p_idx];
}
GDScriptDataType GDScriptFunction::get_return_type() const {
return return_type;
}
GDScriptDataType GDScriptFunction::get_argument_type(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, argument_types.size(), GDScriptDataType());
return argument_types[p_idx];
}
StringName GDScriptFunction::get_name() const {
return name;
}
int GDScriptFunction::get_max_stack_size() const {
return _stack_size;
}
struct _GDFKC {
int order;
List<int> pos;
};
struct _GDFKCS {
int order;
StringName id;
int pos;
bool operator<(const _GDFKCS &p_r) const {
return order < p_r.order;
}
};
void GDScriptFunction::debug_get_stack_member_state(int p_line, List<Pair<StringName, int>> *r_stackvars) const {
int oc = 0;
Map<StringName, _GDFKC> sdmap;
for (const List<StackDebug>::Element *E = stack_debug.front(); E; E = E->next()) {
const StackDebug &sd = E->get();
if (sd.line > p_line) {
break;
}
if (sd.added) {
if (!sdmap.has(sd.identifier)) {
_GDFKC d;
d.order = oc++;
d.pos.push_back(sd.pos);
sdmap[sd.identifier] = d;
} else {
sdmap[sd.identifier].pos.push_back(sd.pos);
}
} else {
ERR_CONTINUE(!sdmap.has(sd.identifier));
sdmap[sd.identifier].pos.pop_back();
if (sdmap[sd.identifier].pos.empty()) {
sdmap.erase(sd.identifier);
}
}
}
List<_GDFKCS> stackpositions;
for (Map<StringName, _GDFKC>::Element *E = sdmap.front(); E; E = E->next()) {
_GDFKCS spp;
spp.id = E->key();
spp.order = E->get().order;
spp.pos = E->get().pos.back()->get();
stackpositions.push_back(spp);
}
stackpositions.sort();
for (List<_GDFKCS>::Element *E = stackpositions.front(); E; E = E->next()) {
Pair<StringName, int> p;
p.first = E->get().id;
p.second = E->get().pos;
r_stackvars->push_back(p);
}
}
GDScriptFunction::GDScriptFunction() :
function_list(this) {
_stack_size = 0;
_call_size = 0;
rpc_mode = MultiplayerAPI::RPC_MODE_DISABLED;
name = "<anonymous>";
#ifdef DEBUG_ENABLED
_func_cname = nullptr;
GDScriptLanguage::get_singleton()->lock.lock();
GDScriptLanguage::get_singleton()->function_list.add(&function_list);
GDScriptLanguage::get_singleton()->lock.unlock();
profile.call_count = 0;
profile.self_time = 0;
profile.total_time = 0;
profile.frame_call_count = 0;
profile.frame_self_time = 0;
profile.frame_total_time = 0;
profile.last_frame_call_count = 0;
profile.last_frame_self_time = 0;
profile.last_frame_total_time = 0;
#endif
}
GDScriptFunction::~GDScriptFunction() {
#ifdef DEBUG_ENABLED
GDScriptLanguage::get_singleton()->lock.lock();
GDScriptLanguage::get_singleton()->function_list.remove(&function_list);
GDScriptLanguage::get_singleton()->lock.unlock();
#endif
}
/////////////////////
Variant GDScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
Variant arg;
r_error.error = Variant::CallError::CALL_OK;
if (p_argcount == 0) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = 1;
return Variant();
} else if (p_argcount == 1) {
//noooneee
} else if (p_argcount == 2) {
arg = *p_args[0];
} else {
Array extra_args;
for (int i = 0; i < p_argcount - 1; i++) {
extra_args.push_back(*p_args[i]);
}
arg = extra_args;
}
Ref<GDScriptFunctionState> self = *p_args[p_argcount - 1];
if (self.is_null()) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = p_argcount - 1;
r_error.expected = Variant::OBJECT;
return Variant();
}
return resume(arg);
}
bool GDScriptFunctionState::is_valid(bool p_extended_check) const {
if (function == nullptr) {
return false;
}
if (p_extended_check) {
#ifndef NO_THREADS
MutexLock lock(GDScriptLanguage::get_singleton()->lock);
#endif
// Script gone?
if (!scripts_list.in_list()) {
return false;
}
// Class instance gone? (if not static function)
if (state.instance && !instances_list.in_list()) {
return false;
}
}
return true;
}
Variant GDScriptFunctionState::resume(const Variant &p_arg) {
ERR_FAIL_COND_V(!function, Variant());
{
#ifndef NO_THREADS
MutexLock lock(GDScriptLanguage::singleton->lock);
#endif
if (!scripts_list.in_list()) {
#ifdef DEBUG_ENABLED
ERR_FAIL_V_MSG(Variant(), "Resumed function '" + state.function_name + "()' after yield, but script is gone. At script: " + state.script_path + ":" + itos(state.line));
#else
return Variant();
#endif
}
if (state.instance && !instances_list.in_list()) {
#ifdef DEBUG_ENABLED
ERR_FAIL_V_MSG(Variant(), "Resumed function '" + state.function_name + "()' after yield, but class instance is gone. At script: " + state.script_path + ":" + itos(state.line));
#else
return Variant();
#endif
}
// Do these now to avoid locking again after the call
scripts_list.remove_from_list();
instances_list.remove_from_list();
}
state.result = p_arg;
Variant::CallError err;
Variant ret = function->call(nullptr, nullptr, 0, err, &state);
bool completed = true;
// If the return value is a GDScriptFunctionState reference,
// then the function did yield again after resuming.
if (ret.is_ref()) {
GDScriptFunctionState *gdfs = Object::cast_to<GDScriptFunctionState>(ret);
if (gdfs && gdfs->function == function) {
completed = false;
gdfs->first_state = first_state.is_valid() ? first_state : Ref<GDScriptFunctionState>(this);
}
}
function = nullptr; //cleaned up;
state.result = Variant();
if (completed) {
if (first_state.is_valid()) {
first_state->emit_signal("completed", ret);
} else {
emit_signal("completed", ret);
}
#ifdef DEBUG_ENABLED
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->exit_function();
}
#endif
}
return ret;
}
void GDScriptFunctionState::_clear_stack() {
if (state.stack_size) {
Variant *stack = (Variant *)state.stack.ptr();
for (int i = 0; i < state.stack_size; i++) {
stack[i].~Variant();
}
state.stack_size = 0;
}
}
void GDScriptFunctionState::_bind_methods() {
ClassDB::bind_method(D_METHOD("resume", "arg"), &GDScriptFunctionState::resume, DEFVAL(Variant()));
ClassDB::bind_method(D_METHOD("is_valid", "extended_check"), &GDScriptFunctionState::is_valid, DEFVAL(false));
ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "_signal_callback", &GDScriptFunctionState::_signal_callback, MethodInfo("_signal_callback"));
ADD_SIGNAL(MethodInfo("completed", PropertyInfo(Variant::NIL, "result", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT)));
}
GDScriptFunctionState::GDScriptFunctionState() :
scripts_list(this),
instances_list(this) {
function = nullptr;
}
GDScriptFunctionState::~GDScriptFunctionState() {
_clear_stack();
GDScriptLanguage::singleton->lock.lock();
scripts_list.remove_from_list();
instances_list.remove_from_list();
GDScriptLanguage::singleton->lock.unlock();
}
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