122 lines
4.7 KiB
C++
122 lines
4.7 KiB
C++
/* Copyright 2014-2017 The MathWorks, Inc. */
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#ifndef MATLAB_DATA_STRUCT_HPP
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#define MATLAB_DATA_STRUCT_HPP
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#include "MDArray.hpp"
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#include "TypedIterator.hpp"
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#include "detail/ExceptionHelpers.hpp"
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#include "detail/HelperFunctions.hpp"
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#include "detail/FunctionType.hpp"
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namespace matlab {
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namespace data {
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namespace detail {
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class ReferenceImpl;
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class Access;
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}
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namespace impl {
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class ArrayImpl;
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}
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/**
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* Struct Element - ElementType for StructArrays. Can be used to inspect the fields of the Struct, but not
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* modify the Struct.
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*/
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class Struct {
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public:
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typedef TypedIterator<Array const> const_iterator;
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/**
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* return a shared copy of the Array found at the field specified
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*
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* @param idx - field name
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* @return Array - shared copy of the Array found at the field specified
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* @throw InvalidFieldNameException if the field does not exist in the struct
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*/
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Array operator[](std::string idx) const {
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impl::ArrayImpl* arrayImpl = nullptr;
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typedef int(*StructGetFieldCopyFcnPtr)(detail::ReferenceImpl*,
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const char*,
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size_t,
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impl::ArrayImpl**);
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static const StructGetFieldCopyFcnPtr fcn = detail::resolveFunction<StructGetFieldCopyFcnPtr>
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(detail::FunctionType::STRUCT_GET_FIELD_COPY);
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detail::throwIfError(fcn(pImpl.get(), idx.c_str(), idx.size(), &arrayImpl));
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return detail::Access::createObj<Array>(arrayImpl);
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}
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/**
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* Return a const_iterator to the beginning of the list of fields
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*
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* @return const_iterator
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* @throw none
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*/
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const_iterator begin() const MW_NOEXCEPT {
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return cbegin();
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}
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/**
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* Return a const_iterator to the beginning of the list of fields
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*
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* @return const_iterator
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* @throw none
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*/
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const_iterator cbegin() const MW_NOEXCEPT {
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typedef detail::IteratorImpl*(*ArrayReferenceBeginFcnPtr)(detail::ReferenceImpl*, bool);
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static const ArrayReferenceBeginFcnPtr str_fcn = detail::resolveFunctionNoExcept<ArrayReferenceBeginFcnPtr>
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(detail::FunctionType::STRUCT_REFERENCE_BEGIN);
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if (str_fcn == nullptr) {
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static const ArrayReferenceBeginFcnPtr fcn = detail::resolveFunction<ArrayReferenceBeginFcnPtr>
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(detail::FunctionType::ARRAY_REFERENCE_BEGIN);
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return detail::Access::createObj<const_iterator>(fcn(pImpl.get(), true));
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}
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else {
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return detail::Access::createObj<const_iterator>(str_fcn(pImpl.get(), true));
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}
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}
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/**
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* Return a const_iterator to the end of the list of fields
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*
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* @return const_iterator
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* @throw none
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*/
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const_iterator end() const MW_NOEXCEPT {
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return cend();
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}
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/**
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* Return a const_iterator to the end of the list of fields
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*
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* @return const_iterator
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* @throw none
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*/
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const_iterator cend() const MW_NOEXCEPT {
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typedef detail::IteratorImpl*(*ArrayReferenceEndFcnPtr)(detail::ReferenceImpl*, bool);
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static const ArrayReferenceEndFcnPtr str_fcn = detail::resolveFunctionNoExcept<ArrayReferenceEndFcnPtr>
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(detail::FunctionType::STRUCT_REFERENCE_END);
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if (str_fcn == nullptr) {
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static const ArrayReferenceEndFcnPtr fcn = detail::resolveFunction<ArrayReferenceEndFcnPtr>
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(detail::FunctionType::ARRAY_REFERENCE_END);
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return detail::Access::createObj<const_iterator>(fcn(pImpl.get(), true));
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}
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else {
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return detail::Access::createObj<const_iterator>(str_fcn(pImpl.get(), true));
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}
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}
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private:
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Struct() = delete;
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Struct(std::shared_ptr<detail::ReferenceImpl> impl) MW_NOEXCEPT :
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pImpl(impl) {}
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std::shared_ptr<detail::ReferenceImpl> pImpl;
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friend class detail::Access;
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};
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}
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}
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#endif
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