mirror of
https://github.com/nlohmann/json
synced 2024-12-02 00:20:06 +00:00
added a parser for continguous containers
This commit is contained in:
Niels
parent
03de590372
commit
b76f5506d7
94
src/json.hpp
94
src/json.hpp
@ -3960,7 +3960,7 @@ class basic_json
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@return Iterator following the last removed element. If the iterator @a
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pos refers to the last element, the `end()` iterator is returned.
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@tparam InteratorType an @ref iterator or @ref const_iterator
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@tparam IteratorType an @ref iterator or @ref const_iterator
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@post Invalidates iterators and references at or after the point of the
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erase, including the `end()` iterator.
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@ -3982,7 +3982,7 @@ class basic_json
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@liveexample{The example shows the result of `erase()` for different JSON
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types.,erase__IteratorType}
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@ -3991,13 +3991,13 @@ class basic_json
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@since version 1.0.0
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*/
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template <class InteratorType, typename
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<InteratorType, typename basic_json_t::iterator>::value or
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std::is_same<InteratorType, typename basic_json_t::const_iterator>::value
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std::is_same<IteratorType, typename basic_json_t::iterator>::value or
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std::is_same<IteratorType, typename basic_json_t::const_iterator>::value
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, int>::type
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= 0>
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InteratorType erase(InteratorType pos)
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IteratorType erase(IteratorType pos)
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{
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// make sure iterator fits the current value
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if (this != pos.m_object)
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@ -4005,7 +4005,7 @@ class basic_json
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throw std::domain_error("iterator does not fit current value");
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}
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InteratorType result = end();
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IteratorType result = end();
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switch (m_type)
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{
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@ -4069,7 +4069,7 @@ class basic_json
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@return Iterator following the last removed element. If the iterator @a
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second refers to the last element, the `end()` iterator is returned.
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@tparam InteratorType an @ref iterator or @ref const_iterator
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@tparam IteratorType an @ref iterator or @ref const_iterator
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@post Invalidates iterators and references at or after the point of the
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erase, including the `end()` iterator.
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@ -4092,7 +4092,7 @@ class basic_json
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@liveexample{The example shows the result of `erase()` for different JSON
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types.,erase__IteratorType_IteratorType}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@sa @ref erase(const size_type) -- removes the element from an array at
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@ -4100,13 +4100,13 @@ class basic_json
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@since version 1.0.0
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*/
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template <class InteratorType, typename
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<InteratorType, typename basic_json_t::iterator>::value or
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std::is_same<InteratorType, typename basic_json_t::const_iterator>::value
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std::is_same<IteratorType, typename basic_json_t::iterator>::value or
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std::is_same<IteratorType, typename basic_json_t::const_iterator>::value
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, int>::type
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= 0>
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InteratorType erase(InteratorType first, InteratorType last)
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IteratorType erase(IteratorType first, IteratorType last)
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{
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// make sure iterator fits the current value
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if (this != first.m_object or this != last.m_object)
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@ -4114,7 +4114,7 @@ class basic_json
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throw std::domain_error("iterators do not fit current value");
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}
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InteratorType result = end();
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IteratorType result = end();
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switch (m_type)
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{
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@ -4186,8 +4186,8 @@ class basic_json
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@liveexample{The example shows the effect of `erase()`.,erase__key_type}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const size_type) -- removes the element from an array at
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the given index
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@ -4223,8 +4223,8 @@ class basic_json
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@liveexample{The example shows the effect of `erase()`.,erase__size_type}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@ -7504,21 +7504,29 @@ class basic_json
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/// the char type to use in the lexer
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using lexer_char_t = unsigned char;
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/// constructor with a given buffer
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explicit lexer(const string_t& s) noexcept
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: m_stream(nullptr), m_buffer(s)
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/// a lexer from a buffer with given length
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lexer(const lexer_char_t* buff, const size_t len) noexcept
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: m_stream(nullptr), m_buffer(), m_content(buff)
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{
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m_content = reinterpret_cast<const lexer_char_t*>(m_buffer.c_str());
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assert(m_content != nullptr);
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m_start = m_cursor = m_content;
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m_limit = m_content + s.size();
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m_limit = m_content + len;
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}
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/// constructor with a given stream
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explicit lexer(std::istream* s) noexcept
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: m_stream(s), m_buffer()
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/// a lexer from a string literal
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explicit lexer(const typename string_t::value_type* buff) noexcept
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: m_stream(nullptr), m_buffer(),
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m_content(reinterpret_cast<const lexer_char_t*>(buff))
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{
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assert(m_content != nullptr);
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m_start = m_cursor = m_content;
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m_limit = m_content + strlen(buff);
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}
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/// a lexer from an input stream
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explicit lexer(std::istream& s)
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: m_stream(&s), m_buffer()
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{
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assert(m_stream != nullptr);
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std::getline(*m_stream, m_buffer);
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m_content = reinterpret_cast<const lexer_char_t*>(m_buffer.c_str());
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assert(m_content != nullptr);
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@ -8853,17 +8861,41 @@ basic_json_parser_63:
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class parser
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{
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public:
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/// constructor for strings
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/// a parser reading from a string literal
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parser(const typename string_t::value_type* buff, parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(buff)
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{
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// read first token
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get_token();
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}
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/// a parser reading from a string container
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parser(const string_t& s, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(s)
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: callback(cb),
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m_lexer(reinterpret_cast<const typename lexer::lexer_char_t*>(s.c_str()), s.size())
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{
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// read first token
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get_token();
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}
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/// a parser reading from an input stream
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parser(std::istream& _is, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(&_is)
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parser(std::istream& is, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(is)
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{
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// read first token
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get_token();
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}
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/// a parser reading from a container with continguous storage
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<typename std::iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value
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, int>::type
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= 0>
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parser(IteratorType first, IteratorType last, const parser_callback_t cb = nullptr) noexcept
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: callback(cb),
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m_lexer(reinterpret_cast<const typename lexer::lexer_char_t*>(&(*first)),
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static_cast<size_t>(std::distance(first, last)))
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{
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// read first token
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get_token();
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@ -3960,7 +3960,7 @@ class basic_json
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@return Iterator following the last removed element. If the iterator @a
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pos refers to the last element, the `end()` iterator is returned.
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@tparam InteratorType an @ref iterator or @ref const_iterator
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@tparam IteratorType an @ref iterator or @ref const_iterator
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@post Invalidates iterators and references at or after the point of the
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erase, including the `end()` iterator.
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@ -3982,7 +3982,7 @@ class basic_json
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@liveexample{The example shows the result of `erase()` for different JSON
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types.,erase__IteratorType}
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@ -3991,13 +3991,13 @@ class basic_json
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@since version 1.0.0
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*/
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template <class InteratorType, typename
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<InteratorType, typename basic_json_t::iterator>::value or
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std::is_same<InteratorType, typename basic_json_t::const_iterator>::value
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std::is_same<IteratorType, typename basic_json_t::iterator>::value or
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std::is_same<IteratorType, typename basic_json_t::const_iterator>::value
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, int>::type
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= 0>
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InteratorType erase(InteratorType pos)
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IteratorType erase(IteratorType pos)
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{
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// make sure iterator fits the current value
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if (this != pos.m_object)
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@ -4005,7 +4005,7 @@ class basic_json
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throw std::domain_error("iterator does not fit current value");
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}
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InteratorType result = end();
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IteratorType result = end();
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switch (m_type)
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{
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@ -4069,7 +4069,7 @@ class basic_json
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@return Iterator following the last removed element. If the iterator @a
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second refers to the last element, the `end()` iterator is returned.
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@tparam InteratorType an @ref iterator or @ref const_iterator
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@tparam IteratorType an @ref iterator or @ref const_iterator
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@post Invalidates iterators and references at or after the point of the
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erase, including the `end()` iterator.
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@ -4092,7 +4092,7 @@ class basic_json
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@liveexample{The example shows the result of `erase()` for different JSON
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types.,erase__IteratorType_IteratorType}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@sa @ref erase(const size_type) -- removes the element from an array at
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@ -4100,13 +4100,13 @@ class basic_json
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@since version 1.0.0
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*/
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template <class InteratorType, typename
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<InteratorType, typename basic_json_t::iterator>::value or
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std::is_same<InteratorType, typename basic_json_t::const_iterator>::value
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std::is_same<IteratorType, typename basic_json_t::iterator>::value or
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std::is_same<IteratorType, typename basic_json_t::const_iterator>::value
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, int>::type
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= 0>
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InteratorType erase(InteratorType first, InteratorType last)
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IteratorType erase(IteratorType first, IteratorType last)
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{
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// make sure iterator fits the current value
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if (this != first.m_object or this != last.m_object)
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@ -4114,7 +4114,7 @@ class basic_json
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throw std::domain_error("iterators do not fit current value");
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}
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InteratorType result = end();
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IteratorType result = end();
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switch (m_type)
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{
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@ -4186,8 +4186,8 @@ class basic_json
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@liveexample{The example shows the effect of `erase()`.,erase__key_type}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const size_type) -- removes the element from an array at
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the given index
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@ -4223,8 +4223,8 @@ class basic_json
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@liveexample{The example shows the effect of `erase()`.,erase__size_type}
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@sa @ref erase(InteratorType) -- removes the element at a given position
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@sa @ref erase(InteratorType, InteratorType) -- removes the elements in
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@sa @ref erase(IteratorType) -- removes the element at a given position
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@sa @ref erase(IteratorType, IteratorType) -- removes the elements in
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the given range
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@sa @ref erase(const typename object_t::key_type&) -- removes the element
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from an object at the given key
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@ -7504,21 +7504,29 @@ class basic_json
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/// the char type to use in the lexer
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using lexer_char_t = unsigned char;
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/// constructor with a given buffer
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explicit lexer(const string_t& s) noexcept
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: m_stream(nullptr), m_buffer(s)
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/// a lexer from a buffer with given length
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lexer(const lexer_char_t* buff, const size_t len) noexcept
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: m_stream(nullptr), m_buffer(), m_content(buff)
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{
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m_content = reinterpret_cast<const lexer_char_t*>(m_buffer.c_str());
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assert(m_content != nullptr);
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m_start = m_cursor = m_content;
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m_limit = m_content + s.size();
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m_limit = m_content + len;
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}
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/// constructor with a given stream
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explicit lexer(std::istream* s) noexcept
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: m_stream(s), m_buffer()
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/// a lexer from a string literal
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explicit lexer(const typename string_t::value_type* buff) noexcept
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: m_stream(nullptr), m_buffer(),
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m_content(reinterpret_cast<const lexer_char_t*>(buff))
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{
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assert(m_content != nullptr);
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m_start = m_cursor = m_content;
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m_limit = m_content + strlen(buff);
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}
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/// a lexer from an input stream
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explicit lexer(std::istream& s)
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: m_stream(&s), m_buffer()
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{
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assert(m_stream != nullptr);
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std::getline(*m_stream, m_buffer);
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m_content = reinterpret_cast<const lexer_char_t*>(m_buffer.c_str());
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assert(m_content != nullptr);
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@ -8150,17 +8158,41 @@ class basic_json
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class parser
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{
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public:
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/// constructor for strings
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/// a parser reading from a string literal
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parser(const typename string_t::value_type* buff, parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(buff)
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{
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// read first token
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get_token();
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}
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/// a parser reading from a string container
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parser(const string_t& s, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(s)
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: callback(cb),
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m_lexer(reinterpret_cast<const typename lexer::lexer_char_t*>(s.c_str()), s.size())
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{
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// read first token
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get_token();
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}
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/// a parser reading from an input stream
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parser(std::istream& _is, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(&_is)
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parser(std::istream& is, const parser_callback_t cb = nullptr) noexcept
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: callback(cb), m_lexer(is)
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{
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// read first token
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get_token();
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}
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/// a parser reading from a container with continguous storage
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template <class IteratorType, typename
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std::enable_if<
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std::is_same<typename std::iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value
|
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, int>::type
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= 0>
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parser(IteratorType first, IteratorType last, const parser_callback_t cb = nullptr) noexcept
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: callback(cb),
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m_lexer(reinterpret_cast<const typename lexer::lexer_char_t*>(&(*first)),
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static_cast<size_t>(std::distance(first, last)))
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{
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// read first token
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get_token();
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@ -32,6 +32,8 @@ SOFTWARE.
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#include "json.hpp"
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using nlohmann::json;
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#include <valarray>
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TEST_CASE("parser class")
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{
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SECTION("parse")
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@ -743,11 +745,47 @@ TEST_CASE("parser class")
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}
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}
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SECTION("copy constructor")
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SECTION("constructing from continguous containers")
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{
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json::string_t* s = new json::string_t("[1,2,3,4]");
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json::parser p(*s);
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delete s;
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CHECK(p.parse() == json({1, 2, 3, 4}));
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SECTION("from std::vector")
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{
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std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
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CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
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}
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SECTION("from std::array")
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{
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std::array<uint8_t, 4> v { {'t', 'r', 'u', 'e'} };
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CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
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}
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SECTION("from array")
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{
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uint8_t v[] = {'t', 'r', 'u', 'e'};
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CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
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}
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SECTION("from char literal")
|
||||
{
|
||||
CHECK (json::parser("true").parse() == json(true));
|
||||
}
|
||||
|
||||
SECTION("from std::string")
|
||||
{
|
||||
std::string v = {'t', 'r', 'u', 'e'};
|
||||
CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
|
||||
}
|
||||
|
||||
SECTION("from std::initializer_list")
|
||||
{
|
||||
std::initializer_list<uint8_t> v = {'t', 'r', 'u', 'e', '\0'};
|
||||
CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
|
||||
}
|
||||
|
||||
SECTION("from std::valarray")
|
||||
{
|
||||
std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
|
||||
CHECK (json::parser(std::begin(v), std::end(v)).parse() == json(true));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user