Cppcheck - HTML report - Godot - branch: master, commit: 216b3302f318c32a5dcf250293d90e47e712e8e9 (2024-12-22)

/**************************************************************************/
/*  gdscript_function.cpp                                                 */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
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/* The above copyright notice and this permission notice shall be         */
/* included in all copies or substantial portions of the Software.        */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
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/**************************************************************************/

#include "gdscript_function.h"

#include "gdscript.h"

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];
}

struct _GDFKC {
	int order = 0;
	List<int> pos;
};

struct _GDFKCS {
	int order = 0;
	StringName id;
	int pos = 0;

	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;
	HashMap<StringName, _GDFKC> sdmap;
	for (const StackDebug &sd : stack_debug) {
		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.is_empty()) {
				sdmap.erase(sd.identifier);
			}
		}
	}

	List<_GDFKCS> stackpositions;
	for (const KeyValue<StringName, _GDFKC> &E : sdmap) {
		_GDFKCS spp;
		spp.id = E.key;
		spp.order = E.value.order;
		spp.pos = E.value.pos.back()->get();
		stackpositions.push_back(spp);
	}

	stackpositions.sort();

	for (_GDFKCS &E : stackpositions) {
		Pair<StringName, int> p;
		p.first = E.id;
		p.second = E.pos;
		r_stackvars->push_back(p);
	}
}

GDScriptFunction::GDScriptFunction() {
	name = "<anonymous>";<--- Variable 'name' is assigned in constructor body. Consider performing initialization in initialization list. [+]When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'name' a value by passing the value to the constructor in the initialization list.
#ifdef DEBUG_ENABLED
	{
		MutexLock lock(GDScriptLanguage::get_singleton()->mutex);
		GDScriptLanguage::get_singleton()->function_list.add(&function_list);
	}
#endif
}

GDScriptFunction::~GDScriptFunction() {
	get_script()->member_functions.erase(name);

	for (int i = 0; i < lambdas.size(); i++) {
		memdelete(lambdas[i]);
	}

	for (int i = 0; i < argument_types.size(); i++) {
		argument_types.write[i].script_type_ref = Ref<Script>();
	}
	return_type.script_type_ref = Ref<Script>();

#ifdef DEBUG_ENABLED
	MutexLock lock(GDScriptLanguage::get_singleton()->mutex);
	GDScriptLanguage::get_singleton()->function_list.remove(&function_list);
#endif
}

/////////////////////

Variant GDScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
	Variant arg;
	r_error.error = Callable::CallError::CALL_OK;

	if (p_argcount == 0) {
		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
		r_error.expected = 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 = Callable::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) {
		MutexLock lock(GDScriptLanguage::get_singleton()->mutex);

		// 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_NULL_V(function, Variant());
	{
		MutexLock lock(GDScriptLanguage::singleton->mutex);

		if (!scripts_list.in_list()) {
#ifdef DEBUG_ENABLED
			ERR_FAIL_V_MSG(Variant(), "Resumed function '" + state.function_name + "()' after await, 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 await, 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;
	Callable::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 await again after resuming.
	if (ret.is_ref_counted()) {
		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(SNAME("completed"), ret);
		} else {
			emit_signal(SNAME("completed"), ret);
		}

#ifdef DEBUG_ENABLED
		if (EngineDebugger::is_active()) {
			GDScriptLanguage::get_singleton()->exit_function();
		}

		_clear_stack();
#endif
	}

	return ret;
}

void GDScriptFunctionState::_clear_stack() {
	if (state.stack_size) {
		Variant *stack = (Variant *)state.stack.ptr();
		// The first 3 are special addresses and not copied to the state, so we skip them here.
		for (int i = 3; i < state.stack_size; i++) {
			stack[i].~Variant();
		}
		state.stack_size = 0;
	}
}

void GDScriptFunctionState::_clear_connections() {
	List<Object::Connection> conns;
	get_signals_connected_to_this(&conns);

	for (Object::Connection &c : conns) {
		c.signal.disconnect(c.callable);
	}
}

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) {
}

GDScriptFunctionState::~GDScriptFunctionState() {
	{
		MutexLock lock(GDScriptLanguage::singleton->mutex);
		scripts_list.remove_from_list();
		instances_list.remove_from_list();
	}
}
Cppcheck report - Godot - branch: master, commit: 216b3302f318c32a5dcf250293d90e47e712e8e9 (2024-12-22): modules/gdscript/gdscript_function.cpp
