mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-18 19:30:25 +00:00
Thomas Krijnen
295 lines
8.9 KiB
C++
295 lines
8.9 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#ifndef IFCBASECLASS_H
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#define IFCBASECLASS_H
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#include "argument.h"
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#include "ifc_parse_api.h"
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#include "schema.h"
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#include "utils.h"
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#include <atomic>
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#include <memory>
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class aggregate_of_instance;
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namespace ifcopenshell {
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#ifdef IFOPSH_SAFE_INSTANCE
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using pointer_type = std::weak_ptr<instance_data>;
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using shared_pointer_type = shared_pointer_type;
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template <typename T, typename... Args>
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shared_pointer_type make_pointer_type(Args&&... args) {
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return std::make_shared<T>(std::forward<Args>(args)...);
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}
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#else
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using pointer_type = instance_data*;
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using shared_pointer_type = instance_data*;
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template <typename T, typename... Args>
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shared_pointer_type make_pointer_type(Args&&... args) {
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return new T(std::forward<Args>(args)...);
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}
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#endif
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class file;
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namespace impl {
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struct in_memory_file_storage;
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}
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} // namespace ifcopenshell
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namespace ifcopenshell {
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class instance_data;
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class attribute_value;
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}
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namespace express {
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class base;
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class select;
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class entity;
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class declared_type;
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class IFC_PARSE_API base {
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protected:
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ifcopenshell::pointer_type data_;
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const ifcopenshell::instance_data* data() const;
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ifcopenshell::instance_data* data();
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public:
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operator bool() const {
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#ifdef IFOPSH_SAFE_INSTANCE
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return !data_.expired();
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#else
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return data_ != nullptr;
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#endif
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}
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bool operator<(const base& other) const {
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return data() < other.data();
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}
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bool operator==(const base& other) const {
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return data() == other.data();
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}
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bool operator!=(const base& other) const {
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return !(*this == other);
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}
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base() {
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#ifndef IFOPSH_SAFE_INSTANCE
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data_ = nullptr;
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#endif
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};
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base(std::nullopt_t) noexcept : base() {}
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base(const ifcopenshell::pointer_type& data) : data_(data) {}
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// @todo try and make this private over time too
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const ifcopenshell::pointer_type& data_weak() const { return data_; }
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const ifcopenshell::declaration& declaration() const;
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template <typename T>
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typename std::enable_if<
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(!std::is_base_of_v<express::base, T> || std::is_same_v<express::base, T>),
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void>::type
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set_attribute_value(size_t attribute_index, const T& value);
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template <typename T>
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typename std::enable_if<
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(!std::is_base_of_v<express::base, T> || std::is_same_v<express::base, T>),
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void>::type
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set_attribute_value(const std::string& attribute_name, const T& value);
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void set_attribute_value(size_t attribute_index, const express::base& value);
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void set_attribute_value(const std::string& attribute_name, const express::base& value);
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void unset_attribute_value(size_t attribute_index);
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ifcopenshell::attribute_value get_attribute_value(size_t attribute_index) const;
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uint32_t identity() const;
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uint32_t id() const;
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void to_string(std::ostream& stream, bool uppercase = false) const;
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template <class T>
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T as() const {
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if constexpr (std::is_same_v<entity, T>) {
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if (declaration().as_entity() != nullptr) {
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return T(data_weak());
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} else {
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return T{};
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}
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} else if constexpr (std::is_same_v<declared_type, T>) {
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if (declaration().as_entity() == nullptr) {
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return T(data_weak());
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} else {
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return T{};
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}
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} else if constexpr (std::is_same_v<select, T>) {
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static_assert(std::is_same_v<select, T>, "select is abstract");
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} else {
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if (declaration().is(T::Class())) {
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return T(data_weak());
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} else {
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return T{};
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}
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}
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}
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ifcopenshell::file* file() const;
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};
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class IFC_PARSE_API entity : public base {
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public:
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using base::base;
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ifcopenshell::attribute_value get(const std::string& attribute_name) const;
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template <typename T>
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T get_value(const std::string& attribute_name) const;
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template <typename T>
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T get_value(const std::string& attribute_name, const T& default_value) const;
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std::vector<express::entity> get_inverse(const std::string& attribute_name) const;
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};
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class IFC_PARSE_API select : public base {
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public:
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select() {}
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select(std::nullopt_t) noexcept : base() {}
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select(const ifcopenshell::pointer_type& data) : base(data) {}
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select(const base& value) : base(value.data_weak()) {}
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base concrete() const {
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return base(data_weak());
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}
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};
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// @todo Investigate whether these should be template classes instead
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// @todo currently this class doesn't do much, decide whether to keep
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// it or move certain functionality from base downwards to
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// entity and declared_type
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class IFC_PARSE_API declared_type : public base {
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public:
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using base::base;
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};
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// Compatibility aliases for checked-in generated schema sources. New generated
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// sources use the snake_case names directly.
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using Base = base;
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using Entity = entity;
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using Select = select;
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using DeclaredType = declared_type;
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} // namespace express
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namespace std {
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template <>
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struct hash<express::base> {
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std::size_t operator()(const express::base& value) const noexcept {
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return std::hash<uint32_t>{}(value.identity());
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}
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};
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template <>
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struct hash<express::entity> {
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std::size_t operator()(const express::entity& value) const noexcept {
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return std::hash<uint32_t>{}(value.identity());
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}
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};
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} // namespace std
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namespace boost {
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template <>
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struct hash<express::base> {
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std::size_t operator()(const express::base& value) const noexcept {
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return std::hash<uint32_t>{}(value.identity());
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}
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};
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template <>
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struct hash<express::entity> {
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std::size_t operator()(const express::entity& value) const noexcept {
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return std::hash<uint32_t>{}(value.identity());
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}
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};
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} // namespace boost
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namespace {
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template <typename>
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struct is_std_vector : std::false_type {};
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template <typename X, typename A>
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struct is_std_vector<std::vector<X, A>> : std::true_type {};
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template <typename T>
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constexpr bool is_std_vector_v = is_std_vector<T>::value;
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template <typename T>
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struct is_std_vector_vector : std::false_type {};
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template <typename T, typename Alloc, typename Alloc2>
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struct is_std_vector_vector<std::vector<std::vector<T, Alloc>, Alloc2>> : std::true_type {};
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template <typename T>
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constexpr bool is_std_vector_vector_v = is_std_vector_vector<T>::value;
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}
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template <typename T, typename U>
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typename std::conditional_t<
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is_std_vector<U>::value,
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std::vector<std::vector<T>>,
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std::vector<T>>
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cast_vector(const std::vector<U>& values) {
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if constexpr (is_std_vector<U>::value) {
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std::vector<std::vector<T>> result;
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result.reserve(values.size());
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for (const auto& value : values) {
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result.push_back(cast_vector<T>(value));
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}
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return result;
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} else {
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std::vector<T> result;
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for (const auto& value : values) {
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if constexpr (std::is_base_of_v<T, U>) {
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// For a base or identity transform we can just rely on static cast
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result.push_back(value);
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} else if constexpr (std::is_base_of_v<express::select, U> && std::is_same_v<T, express::base>) {
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// From a select to concrete we simply call the appropriate method
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result.push_back(value.concrete());
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} else {
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if (auto cast_value = value.template as<T>()) {
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result.push_back(cast_value);
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}
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}
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}
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return result;
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}
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}
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#endif
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