d76806d322
ptrcall is now also used to optimize calls in GDScript, on top of the existing use by the GDNative and Mono modules. It no longer makes sense to make it optional.
578 lines
18 KiB
C++
578 lines
18 KiB
C++
/*************************************************************************/
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/* method_bind.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef METHOD_BIND_H
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#define METHOD_BIND_H
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#include "core/variant/binder_common.h"
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enum MethodFlags {
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METHOD_FLAG_NORMAL = 1,
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METHOD_FLAG_EDITOR = 2,
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METHOD_FLAG_NOSCRIPT = 4,
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METHOD_FLAG_CONST = 8,
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METHOD_FLAG_REVERSE = 16, // used for events
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METHOD_FLAG_VIRTUAL = 32,
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METHOD_FLAG_FROM_SCRIPT = 64,
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METHOD_FLAG_VARARG = 128,
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METHOD_FLAGS_DEFAULT = METHOD_FLAG_NORMAL,
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};
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VARIANT_ENUM_CAST(MethodFlags)
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// some helpers
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class MethodBind {
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int method_id;
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uint32_t hint_flags = METHOD_FLAGS_DEFAULT;
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StringName name;
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StringName instance_class;
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Vector<Variant> default_arguments;
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int default_argument_count = 0;
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int argument_count = 0;
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bool _const = false;
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bool _returns = false;
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protected:
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#ifdef DEBUG_METHODS_ENABLED
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Variant::Type *argument_types = nullptr;
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Vector<StringName> arg_names;
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#endif
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void _set_const(bool p_const);
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void _set_returns(bool p_returns);
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#ifdef DEBUG_METHODS_ENABLED
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virtual Variant::Type _gen_argument_type(int p_arg) const = 0;
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const = 0;
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void _generate_argument_types(int p_count);
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#endif
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void set_argument_count(int p_count) { argument_count = p_count; }
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public:
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_FORCE_INLINE_ const Vector<Variant> &get_default_arguments() const { return default_arguments; }
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_FORCE_INLINE_ int get_default_argument_count() const { return default_argument_count; }
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_FORCE_INLINE_ Variant has_default_argument(int p_arg) const {
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int idx = p_arg - (argument_count - default_arguments.size());
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if (idx < 0 || idx >= default_arguments.size()) {
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return false;
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} else {
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return true;
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}
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}
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_FORCE_INLINE_ Variant get_default_argument(int p_arg) const {
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int idx = p_arg - (argument_count - default_arguments.size());
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if (idx < 0 || idx >= default_arguments.size()) {
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return Variant();
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} else {
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return default_arguments[idx];
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}
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}
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#ifdef DEBUG_METHODS_ENABLED
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_FORCE_INLINE_ Variant::Type get_argument_type(int p_argument) const {
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ERR_FAIL_COND_V(p_argument < -1 || p_argument > argument_count, Variant::NIL);
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return argument_types[p_argument + 1];
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}
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PropertyInfo get_argument_info(int p_argument) const;
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PropertyInfo get_return_info() const;
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void set_argument_names(const Vector<StringName> &p_names); // Set by ClassDB, can't be inferred otherwise.
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Vector<StringName> get_argument_names() const;
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const = 0;
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#endif
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void set_hint_flags(uint32_t p_hint) { hint_flags = p_hint; }
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uint32_t get_hint_flags() const { return hint_flags | (is_const() ? METHOD_FLAG_CONST : 0) | (is_vararg() ? METHOD_FLAG_VARARG : 0); }
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_FORCE_INLINE_ StringName get_instance_class() const { return instance_class; }
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_FORCE_INLINE_ void set_instance_class(const StringName &p_class) { instance_class = p_class; }
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_FORCE_INLINE_ int get_argument_count() const { return argument_count; };
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) = 0;
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) = 0;
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StringName get_name() const;
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void set_name(const StringName &p_name);
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_FORCE_INLINE_ int get_method_id() const { return method_id; }
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_FORCE_INLINE_ bool is_const() const { return _const; }
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_FORCE_INLINE_ bool has_return() const { return _returns; }
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virtual bool is_vararg() const { return false; }
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void set_default_arguments(const Vector<Variant> &p_defargs);
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MethodBind();
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virtual ~MethodBind();
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};
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template <class T>
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class MethodBindVarArg : public MethodBind {
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public:
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typedef Variant (T::*NativeCall)(const Variant **, int, Callable::CallError &);
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protected:
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NativeCall call_method = nullptr;
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#ifdef DEBUG_METHODS_ENABLED
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MethodInfo arguments;
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#endif
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public:
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#ifdef DEBUG_METHODS_ENABLED
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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if (p_arg < 0) {
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return arguments.return_val;
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} else if (p_arg < arguments.arguments.size()) {
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return arguments.arguments[p_arg];
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} else {
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return PropertyInfo(Variant::NIL, "arg_" + itos(p_arg), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT);
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}
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}
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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return _gen_argument_type_info(p_arg).type;
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}
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virtual GodotTypeInfo::Metadata get_argument_meta(int) const {
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return GodotTypeInfo::METADATA_NONE;
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}
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#else
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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return Variant::NIL;
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}
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#endif
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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T *instance = static_cast<T *>(p_object);
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return (instance->*call_method)(p_args, p_arg_count, r_error);
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}
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void set_method_info(const MethodInfo &p_info, bool p_return_nil_is_variant) {
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set_argument_count(p_info.arguments.size());
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#ifdef DEBUG_METHODS_ENABLED
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Variant::Type *at = memnew_arr(Variant::Type, p_info.arguments.size() + 1);
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at[0] = p_info.return_val.type;
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if (p_info.arguments.size()) {
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Vector<StringName> names;
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names.resize(p_info.arguments.size());
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for (int i = 0; i < p_info.arguments.size(); i++) {
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at[i + 1] = p_info.arguments[i].type;
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names.write[i] = p_info.arguments[i].name;
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}
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set_argument_names(names);
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}
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argument_types = at;
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arguments = p_info;
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if (p_return_nil_is_variant) {
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arguments.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
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}
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#endif
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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ERR_FAIL(); // Can't call.
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}
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void set_method(NativeCall p_method) { call_method = p_method; }
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virtual bool is_const() const { return false; }
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virtual bool is_vararg() const { return true; }
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MethodBindVarArg() {
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_set_returns(true);
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}
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};
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template <class T>
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MethodBind *create_vararg_method_bind(Variant (T::*p_method)(const Variant **, int, Callable::CallError &), const MethodInfo &p_info, bool p_return_nil_is_variant) {
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MethodBindVarArg<T> *a = memnew((MethodBindVarArg<T>));
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a->set_method(p_method);
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a->set_method_info(p_info, p_return_nil_is_variant);
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a->set_instance_class(T::get_class_static());
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return a;
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}
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/**** VARIADIC TEMPLATES ****/
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#ifndef TYPED_METHOD_BIND
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class __UnexistingClass;
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#define MB_T __UnexistingClass
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#else
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#define MB_T T
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#endif
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// no return, not const
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#ifdef TYPED_METHOD_BIND
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template <class T, class... P>
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#else
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template <class... P>
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#endif
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class MethodBindT : public MethodBind {
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void (MB_T::*method)(P...);
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protected:
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#ifdef DEBUG_METHODS_ENABLED
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// GCC raises warnings in the case P = {} as the comparison is always false...
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wlogical-op"
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#endif
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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return call_get_argument_type<P...>(p_arg);
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} else {
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return Variant::NIL;
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}
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}
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic pop
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#endif
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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PropertyInfo pi;
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call_get_argument_type_info<P...>(p_arg, pi);
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return pi;
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}
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#endif
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public:
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#ifdef DEBUG_METHODS_ENABLED
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const {
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return call_get_argument_metadata<P...>(p_arg);
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}
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#endif
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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#ifdef TYPED_METHOD_BIND
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call_with_variant_args_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
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#else
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call_with_variant_args_dv((MB_T *)(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
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#endif
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return Variant();
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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#ifdef TYPED_METHOD_BIND
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call_with_ptr_args<T, P...>(static_cast<T *>(p_object), method, p_args);
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#else
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call_with_ptr_args<MB_T, P...>((MB_T *)(p_object), method, p_args);
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#endif
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}
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MethodBindT(void (MB_T::*p_method)(P...)) {
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method = p_method;
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#ifdef DEBUG_METHODS_ENABLED
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_generate_argument_types(sizeof...(P));
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#endif
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set_argument_count(sizeof...(P));
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}
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};
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template <class T, class... P>
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MethodBind *create_method_bind(void (T::*p_method)(P...)) {
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#ifdef TYPED_METHOD_BIND
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MethodBind *a = memnew((MethodBindT<T, P...>)(p_method));
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#else
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MethodBind *a = memnew((MethodBindT<P...>)(reinterpret_cast<void (MB_T::*)(P...)>(p_method)));
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#endif
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a->set_instance_class(T::get_class_static());
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return a;
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}
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// no return, not const
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#ifdef TYPED_METHOD_BIND
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template <class T, class... P>
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#else
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template <class... P>
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#endif
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class MethodBindTC : public MethodBind {
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void (MB_T::*method)(P...) const;
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protected:
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#ifdef DEBUG_METHODS_ENABLED
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// GCC raises warnings in the case P = {} as the comparison is always false...
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wlogical-op"
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#endif
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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return call_get_argument_type<P...>(p_arg);
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} else {
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return Variant::NIL;
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}
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}
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic pop
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#endif
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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PropertyInfo pi;
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call_get_argument_type_info<P...>(p_arg, pi);
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return pi;
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}
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#endif
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public:
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#ifdef DEBUG_METHODS_ENABLED
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const {
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return call_get_argument_metadata<P...>(p_arg);
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}
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#endif
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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#ifdef TYPED_METHOD_BIND
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call_with_variant_argsc_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
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#else
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call_with_variant_argsc_dv((MB_T *)(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
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#endif
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return Variant();
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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#ifdef TYPED_METHOD_BIND
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call_with_ptr_argsc<T, P...>(static_cast<T *>(p_object), method, p_args);
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#else
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call_with_ptr_argsc<MB_T, P...>((MB_T *)(p_object), method, p_args);
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#endif
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}
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MethodBindTC(void (MB_T::*p_method)(P...) const) {
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method = p_method;
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_set_const(true);
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#ifdef DEBUG_METHODS_ENABLED
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_generate_argument_types(sizeof...(P));
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#endif
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set_argument_count(sizeof...(P));
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}
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};
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template <class T, class... P>
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MethodBind *create_method_bind(void (T::*p_method)(P...) const) {
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#ifdef TYPED_METHOD_BIND
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MethodBind *a = memnew((MethodBindTC<T, P...>)(p_method));
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#else
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MethodBind *a = memnew((MethodBindTC<P...>)(reinterpret_cast<void (MB_T::*)(P...) const>(p_method)));
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#endif
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a->set_instance_class(T::get_class_static());
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return a;
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}
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// return, not const
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#ifdef TYPED_METHOD_BIND
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template <class T, class R, class... P>
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#else
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template <class R, class... P>
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#endif
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class MethodBindTR : public MethodBind {
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R(MB_T::*method)
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(P...);
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protected:
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#ifdef DEBUG_METHODS_ENABLED
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// GCC raises warnings in the case P = {} as the comparison is always false...
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wlogical-op"
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#endif
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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return call_get_argument_type<P...>(p_arg);
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} else {
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return GetTypeInfo<R>::VARIANT_TYPE;
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}
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}
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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PropertyInfo pi;
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call_get_argument_type_info<P...>(p_arg, pi);
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return pi;
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} else {
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return GetTypeInfo<R>::get_class_info();
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}
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}
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic pop
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#endif
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#endif
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public:
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#ifdef DEBUG_METHODS_ENABLED
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const {
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if (p_arg >= 0) {
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return call_get_argument_metadata<P...>(p_arg);
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} else {
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return GetTypeInfo<R>::METADATA;
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}
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}
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#endif
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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Variant ret;
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#ifdef TYPED_METHOD_BIND
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call_with_variant_args_ret_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
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#else
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call_with_variant_args_ret_dv((MB_T *)p_object, method, p_args, p_arg_count, ret, r_error, get_default_arguments());
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#endif
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return ret;
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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#ifdef TYPED_METHOD_BIND
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call_with_ptr_args_ret<T, R, P...>(static_cast<T *>(p_object), method, p_args, r_ret);
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#else
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call_with_ptr_args_ret<MB_T, R, P...>((MB_T *)(p_object), method, p_args, r_ret);
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#endif
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}
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MethodBindTR(R (MB_T::*p_method)(P...)) {
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method = p_method;
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_set_returns(true);
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#ifdef DEBUG_METHODS_ENABLED
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_generate_argument_types(sizeof...(P));
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#endif
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set_argument_count(sizeof...(P));
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}
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};
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template <class T, class R, class... P>
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MethodBind *create_method_bind(R (T::*p_method)(P...)) {
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#ifdef TYPED_METHOD_BIND
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MethodBind *a = memnew((MethodBindTR<T, R, P...>)(p_method));
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#else
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MethodBind *a = memnew((MethodBindTR<R, P...>)(reinterpret_cast<R (MB_T::*)(P...)>(p_method)));
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#endif
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a->set_instance_class(T::get_class_static());
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return a;
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}
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// return, const
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#ifdef TYPED_METHOD_BIND
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template <class T, class R, class... P>
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#else
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template <class R, class... P>
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#endif
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class MethodBindTRC : public MethodBind {
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R(MB_T::*method)
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(P...) const;
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protected:
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#ifdef DEBUG_METHODS_ENABLED
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// GCC raises warnings in the case P = {} as the comparison is always false...
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wlogical-op"
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#endif
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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return call_get_argument_type<P...>(p_arg);
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} else {
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return GetTypeInfo<R>::VARIANT_TYPE;
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}
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}
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
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PropertyInfo pi;
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call_get_argument_type_info<P...>(p_arg, pi);
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return pi;
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} else {
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return GetTypeInfo<R>::get_class_info();
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}
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}
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic pop
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#endif
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#endif
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public:
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#ifdef DEBUG_METHODS_ENABLED
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const {
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if (p_arg >= 0) {
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return call_get_argument_metadata<P...>(p_arg);
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} else {
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return GetTypeInfo<R>::METADATA;
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}
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}
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#endif
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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Variant ret;
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#ifdef TYPED_METHOD_BIND
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call_with_variant_args_retc_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
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#else
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call_with_variant_args_retc_dv((MB_T *)(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
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#endif
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return ret;
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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#ifdef TYPED_METHOD_BIND
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call_with_ptr_args_retc<T, R, P...>(static_cast<T *>(p_object), method, p_args, r_ret);
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#else
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call_with_ptr_args_retc<MB_T, R, P...>((MB_T *)(p_object), method, p_args, r_ret);
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#endif
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}
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MethodBindTRC(R (MB_T::*p_method)(P...) const) {
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method = p_method;
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_set_returns(true);
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_set_const(true);
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#ifdef DEBUG_METHODS_ENABLED
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_generate_argument_types(sizeof...(P));
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#endif
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set_argument_count(sizeof...(P));
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}
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};
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template <class T, class R, class... P>
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MethodBind *create_method_bind(R (T::*p_method)(P...) const) {
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#ifdef TYPED_METHOD_BIND
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MethodBind *a = memnew((MethodBindTRC<T, R, P...>)(p_method));
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#else
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MethodBind *a = memnew((MethodBindTRC<R, P...>)(reinterpret_cast<R (MB_T::*)(P...) const>(p_method)));
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#endif
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a->set_instance_class(T::get_class_static());
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return a;
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}
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#endif // METHOD_BIND_H
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