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virtualx-engine/modules/gdscript/gdscript_function.cpp
Pedro J. Estébanez 64344e6d1d Fix object leaks caused by unfulfilled yields 
Now the stack saved in a `GDScriptFunctionState` is cleared as soon as the `yield()` operation is known not to be resumed because either the script, the instance or both are deleted.

This clears problems like leaked objects by eliminating cases of circular references between `GDScriptFunctionState`s preventing them and the objects they refer to in their saved stacks from being released. As an example, this makes using `SceneTreeTimer` safer.

Furthermore, with this change it's now possible to print early warnings about `yield()`s to released script/instances, as now we know they won't be successfully resumed as the condition for that happens. However, this PR doesn't add such messages, to keep the observed behavior the same for the time being.

Also, now a backup of the function name in `GDScriptFunctionState` is used, since the script may not be valid by the time the function name is needed for the resume-after-yield error messages.
2020-05-05 17:53:47 +02:00

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/*************************************************************************/
/* gdscript_function.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_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 *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 NULL;
}
#endif
return &self;
} break;
case ADDR_TYPE_CLASS: {
return &p_script->_static_ref;
} break;
case ADDR_TYPE_MEMBER: {
#ifdef DEBUG_ENABLED
if (unlikely(!p_instance)) {
r_error = "Cannot access member without instance.";
return NULL;
}
#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, NULL);
#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(NULL, "GDScriptCompiler bug.");
} break;
case ADDR_TYPE_LOCAL_CONSTANT: {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(address, _constant_count, NULL);
#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, NULL);
#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(), NULL);
#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, NULL);
#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 NULL;
}
} break;
#endif
case ADDR_TYPE_NIL: {
return &nil;
} break;
}
ERR_FAIL_V_MSG(NULL, "Bad code! (unknown addressing mode).");
return NULL;
}
#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) {
basestr = "null instance";
} else {
if (ObjectDB::instance_validate(bobj)) {
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 = "previously freed instance";
}
}
} 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 retvalue;
Variant *stack = NULL;
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 = NULL;
}
if (_call_size) {
call_args = (Variant **)&aptr[sizeof(Variant) * _stack_size];
} else {
call_args = NULL;
}
} else {
stack = NULL;
call_args = NULL;
}
if (p_instance) {
if (p_instance->base_ref && static_cast<Reference *>(p_instance->owner)->is_referenced()) {
self = REF(static_cast<Reference *>(p_instance->owner));
} else {
self = p_instance->owner;
}
script = p_instance->script.ptr();
} else {
script = _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, 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, 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 (b->get_type() != Variant::OBJECT || b->operator Object *() == NULL) {
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 *() != NULL) {
Object *obj_A = *a;
Object *obj_B = *b;
#ifdef DEBUG_ENABLED
if (!ObjectDB::instance_validate(obj_A)) {
err_text = "Left operand of 'is' was already freed.";
OPCODE_BREAK;
}
#endif // DEBUG_ENABLED
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 *() != NULL) {
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 (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->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->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 *() != NULL) {
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, NULL, 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;
}
}
}
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 = NULL;
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;
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
_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 = NULL;
}
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
#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();
#ifdef DEBUG_ENABLED
if (!obj) {
err_text = "First argument of yield() is null.";
OPCODE_BREAK;
}
if (ScriptDebugger::get_singleton()) {
if (!ObjectDB::instance_validate(obj)) {
err_text = "First argument of yield() is a previously freed instance.";
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);
GET_VARIANT_PTR(message, 2);
bool result = test->booleanize();
if (!result) {
const String &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 && ObjectDB::instance_validate(p_instance->owner) && 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 && ObjectDB::instance_validate(p_instance->owner) && 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 = NULL;
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->lock();
}
GDScriptLanguage::get_singleton()->function_list.add(&function_list);
if (GDScriptLanguage::get_singleton()->lock) {
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
if (GDScriptLanguage::get_singleton()->lock) {
GDScriptLanguage::get_singleton()->lock->lock();
}
GDScriptLanguage::get_singleton()->function_list.remove(&function_list);
if (GDScriptLanguage::get_singleton()->lock) {
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 == NULL)
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(NULL, NULL, 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 = NULL; //cleaned up;
state.result = Variant();
if (completed) {
_clear_stack();
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 = NULL;
}
GDScriptFunctionState::~GDScriptFunctionState() {
_clear_stack();
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->lock();
#endif
scripts_list.remove_from_list();
instances_list.remove_from_list();
#ifndef NO_THREADS
GDScriptLanguage::singleton->lock->unlock();
#endif
}
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