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json
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added noexcept and constexpr

pull/208/head
Niels 2016-02-14 16:42:48 +01:00
parent 61fe90f998
commit a69b1a6f0b
4 changed files with 266 additions and 168 deletions
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9
Makefile
View File

@ -24,6 +24,15 @@ json_unit: test/unit.cpp src/json.hpp test/catch.hpp
$(CXX) -std=c++11 $(CXXFLAGS) $(FLAGS) $(CPPFLAGS) -I src -I test $< $(LDFLAGS) -o $@ $(CXX) -std=c++11 $(CXXFLAGS) $(FLAGS) $(CPPFLAGS) -I src -I test $< $(LDFLAGS) -o $@
##########################################################################
# documentation tests
##########################################################################
# compile example files and check output
doctest:
make check_output -C doc
########################################################################## ##########################################################################
# static analyzer # static analyzer
########################################################################## ##########################################################################

1
doc/Doxyfile
View File

@ -30,6 +30,7 @@ TAB_SIZE = 4
ALIASES = "complexity=@par Complexity\n" ALIASES = "complexity=@par Complexity\n"
ALIASES += liveexample{2}="@par Example\n \1 \n @includelineno \2.cpp \n Output (play with this example @htmlinclude \2.link):\n @verbinclude \2.output \n The example code above can be translated with @verbatim g++ -std=c++11 -Isrc doc/examples/\2.cpp -o \2 @endverbatim" ALIASES += liveexample{2}="@par Example\n \1 \n @includelineno \2.cpp \n Output (play with this example @htmlinclude \2.link):\n @verbinclude \2.output \n The example code above can be translated with @verbatim g++ -std=c++11 -Isrc doc/examples/\2.cpp -o \2 @endverbatim"
ALIASES += requirement="@par Requirements\n" ALIASES += requirement="@par Requirements\n"
ALIASES += exceptionsafety="@par Exception safety\n"
TCL_SUBST = TCL_SUBST =
OPTIMIZE_OUTPUT_FOR_C = NO OPTIMIZE_OUTPUT_FOR_C = NO
OPTIMIZE_OUTPUT_JAVA = NO OPTIMIZE_OUTPUT_JAVA = NO

212
src/json.hpp
View File

@ -941,6 +941,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this constructor never throws
exceptions.
@requirement This function helps `basic_json` satisfying the @requirement This function helps `basic_json` satisfying the
[Container](http://en.cppreference.com/w/cpp/concept/Container) [Container](http://en.cppreference.com/w/cpp/concept/Container)
requirements: requirements:
@ -967,6 +970,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this constructor never throws
exceptions.
@liveexample{The following code shows the constructor with null pointer @liveexample{The following code shows the constructor with null pointer
parameter.,basic_json__nullptr_t} parameter.,basic_json__nullptr_t}
@ -1202,7 +1208,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(boolean_t val) basic_json(boolean_t val) noexcept
: m_type(value_t::boolean), m_value(val) : m_type(value_t::boolean), m_value(val)
{} {}
@ -1235,7 +1241,7 @@ class basic_json
and std::is_same<T, number_integer_t>::value and std::is_same<T, number_integer_t>::value
, int>::type , int>::type
= 0> = 0>
basic_json(const number_integer_t val) basic_json(const number_integer_t val) noexcept
: m_type(value_t::number_integer), m_value(val) : m_type(value_t::number_integer), m_value(val)
{} {}
@ -1264,7 +1270,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(const int val) basic_json(const int val) noexcept
: m_type(value_t::number_integer), : m_type(value_t::number_integer),
m_value(static_cast<number_integer_t>(val)) m_value(static_cast<number_integer_t>(val))
{} {}
@ -1329,7 +1335,7 @@ class basic_json
and std::is_same<T, number_unsigned_t>::value and std::is_same<T, number_unsigned_t>::value
, int>::type , int>::type
= 0> = 0>
basic_json(const number_unsigned_t val) basic_json(const number_unsigned_t val) noexcept
: m_type(value_t::number_unsigned), m_value(val) : m_type(value_t::number_unsigned), m_value(val)
{} {}
@ -1389,7 +1395,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(const number_float_t val) basic_json(const number_float_t val) noexcept
: m_type(value_t::number_float), m_value(val) : m_type(value_t::number_float), m_value(val)
{ {
// replace infinity and NAN by null // replace infinity and NAN by null
@ -2078,12 +2084,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `type()` for all JSON @liveexample{The following code exemplifies `type()` for all JSON
types.,type} types.,type}
@since version 1.0.0 @since version 1.0.0
*/ */
value_t type() const noexcept constexpr value_t type() const noexcept
{ {
return m_type; return m_type;
} }
@ -2099,6 +2108,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_primitive()` for all JSON @liveexample{The following code exemplifies `is_primitive()` for all JSON
types.,is_primitive} types.,is_primitive}
@ -2110,7 +2122,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_primitive() const noexcept constexpr bool is_primitive() const noexcept
{ {
return is_null() or is_string() or is_boolean() or is_number(); return is_null() or is_string() or is_boolean() or is_number();
} }
@ -2125,6 +2137,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_structured()` for all JSON @liveexample{The following code exemplifies `is_structured()` for all JSON
types.,is_structured} types.,is_structured}
@ -2134,7 +2149,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_structured() const noexcept constexpr bool is_structured() const noexcept
{ {
return is_array() or is_object(); return is_array() or is_object();
} }
@ -2148,12 +2163,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_null()` for all JSON @liveexample{The following code exemplifies `is_null()` for all JSON
types.,is_null} types.,is_null}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_null() const noexcept constexpr bool is_null() const noexcept
{ {
return m_type == value_t::null; return m_type == value_t::null;
} }
@ -2167,12 +2185,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_boolean()` for all JSON @liveexample{The following code exemplifies `is_boolean()` for all JSON
types.,is_boolean} types.,is_boolean}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_boolean() const noexcept constexpr bool is_boolean() const noexcept
{ {
return m_type == value_t::boolean; return m_type == value_t::boolean;
} }
@ -2188,6 +2209,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number()` for all JSON @liveexample{The following code exemplifies `is_number()` for all JSON
types.,is_number} types.,is_number}
@ -2199,7 +2223,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number() const noexcept constexpr bool is_number() const noexcept
{ {
return is_number_integer() or is_number_float(); return is_number_integer() or is_number_float();
} }
@ -2215,6 +2239,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_integer()` for all @liveexample{The following code exemplifies `is_number_integer()` for all
JSON types.,is_number_integer} JSON types.,is_number_integer}
@ -2225,7 +2252,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number_integer() const noexcept constexpr bool is_number_integer() const noexcept
{ {
return m_type == value_t::number_integer or m_type == value_t::number_unsigned; return m_type == value_t::number_integer or m_type == value_t::number_unsigned;
} }
@ -2240,6 +2267,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_unsigned()` for all @liveexample{The following code exemplifies `is_number_unsigned()` for all
JSON types.,is_number_unsigned} JSON types.,is_number_unsigned}
@ -2250,7 +2280,7 @@ class basic_json
@since version 2.0.0 @since version 2.0.0
*/ */
bool is_number_unsigned() const noexcept constexpr bool is_number_unsigned() const noexcept
{ {
return m_type == value_t::number_unsigned; return m_type == value_t::number_unsigned;
} }
@ -2265,6 +2295,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_float()` for all @liveexample{The following code exemplifies `is_number_float()` for all
JSON types.,is_number_float} JSON types.,is_number_float}
@ -2275,7 +2308,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number_float() const noexcept constexpr bool is_number_float() const noexcept
{ {
return m_type == value_t::number_float; return m_type == value_t::number_float;
} }
@ -2289,12 +2322,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_object()` for all JSON @liveexample{The following code exemplifies `is_object()` for all JSON
types.,is_object} types.,is_object}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_object() const noexcept constexpr bool is_object() const noexcept
{ {
return m_type == value_t::object; return m_type == value_t::object;
} }
@ -2308,12 +2344,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_array()` for all JSON @liveexample{The following code exemplifies `is_array()` for all JSON
types.,is_array} types.,is_array}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_array() const noexcept constexpr bool is_array() const noexcept
{ {
return m_type == value_t::array; return m_type == value_t::array;
} }
@ -2327,12 +2366,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_string()` for all JSON @liveexample{The following code exemplifies `is_string()` for all JSON
types.,is_string} types.,is_string}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_string() const noexcept constexpr bool is_string() const noexcept
{ {
return m_type == value_t::string; return m_type == value_t::string;
} }
@ -2351,12 +2393,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_discarded()` for all JSON @liveexample{The following code exemplifies `is_discarded()` for all JSON
types.,is_discarded} types.,is_discarded}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_discarded() const noexcept constexpr bool is_discarded() const noexcept
{ {
return m_type == value_t::discarded; return m_type == value_t::discarded;
} }
@ -2371,12 +2416,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies the @ref value_t operator for @liveexample{The following code exemplifies the @ref value_t operator for
all JSON types.,operator__value_t} all JSON types.,operator__value_t}
@since version 1.0.0 @since version 1.0.0
*/ */
operator value_t() const noexcept constexpr operator value_t() const noexcept
{ {
return m_type; return m_type;
} }
@ -2558,16 +2606,11 @@ class basic_json
} }
/// get a boolean (explicit) /// get a boolean (explicit)
boolean_t get_impl(boolean_t*) const constexpr boolean_t get_impl(boolean_t*) const
{ {
if (is_boolean()) return is_boolean()
{ ? m_value.boolean
return m_value.boolean; : throw std::domain_error("type must be boolean, but is " + type_name());
}
else
{
throw std::domain_error("type must be boolean, but is " + type_name());
}
} }
/// get a pointer to the value (object) /// get a pointer to the value (object)
@ -2577,7 +2620,7 @@ class basic_json
} }
/// get a pointer to the value (object) /// get a pointer to the value (object)
const object_t* get_impl_ptr(const object_t*) const noexcept constexpr const object_t* get_impl_ptr(const object_t*) const noexcept
{ {
return is_object() ? m_value.object : nullptr; return is_object() ? m_value.object : nullptr;
} }
@ -2589,7 +2632,7 @@ class basic_json
} }
/// get a pointer to the value (array) /// get a pointer to the value (array)
const array_t* get_impl_ptr(const array_t*) const noexcept constexpr const array_t* get_impl_ptr(const array_t*) const noexcept
{ {
return is_array() ? m_value.array : nullptr; return is_array() ? m_value.array : nullptr;
} }
@ -2601,7 +2644,7 @@ class basic_json
} }
/// get a pointer to the value (string) /// get a pointer to the value (string)
const string_t* get_impl_ptr(const string_t*) const noexcept constexpr const string_t* get_impl_ptr(const string_t*) const noexcept
{ {
return is_string() ? m_value.string : nullptr; return is_string() ? m_value.string : nullptr;
} }
@ -2613,7 +2656,7 @@ class basic_json
} }
/// get a pointer to the value (boolean) /// get a pointer to the value (boolean)
const boolean_t* get_impl_ptr(const boolean_t*) const noexcept constexpr const boolean_t* get_impl_ptr(const boolean_t*) const noexcept
{ {
return is_boolean() ? &m_value.boolean : nullptr; return is_boolean() ? &m_value.boolean : nullptr;
} }
@ -2625,7 +2668,7 @@ class basic_json
} }
/// get a pointer to the value (integer number) /// get a pointer to the value (integer number)
const number_integer_t* get_impl_ptr(const number_integer_t*) const noexcept constexpr const number_integer_t* get_impl_ptr(const number_integer_t*) const noexcept
{ {
return is_number_integer() ? &m_value.number_integer : nullptr; return is_number_integer() ? &m_value.number_integer : nullptr;
} }
@ -2637,7 +2680,7 @@ class basic_json
} }
/// get a pointer to the value (unsigned number) /// get a pointer to the value (unsigned number)
const number_unsigned_t* get_impl_ptr(const number_unsigned_t*) const noexcept constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t*) const noexcept
{ {
return is_number_unsigned() ? &m_value.number_unsigned : nullptr; return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
} }
@ -2649,7 +2692,7 @@ class basic_json
} }
/// get a pointer to the value (floating-point number) /// get a pointer to the value (floating-point number)
const number_float_t* get_impl_ptr(const number_float_t*) const noexcept constexpr const number_float_t* get_impl_ptr(const number_float_t*) const noexcept
{ {
return is_number_float() ? &m_value.number_float : nullptr; return is_number_float() ? &m_value.number_float : nullptr;
} }
@ -2774,7 +2817,7 @@ class basic_json
std::enable_if< std::enable_if<
std::is_pointer<PointerType>::value std::is_pointer<PointerType>::value
, int>::type = 0> , int>::type = 0>
const PointerType get() const noexcept constexpr const PointerType get() const noexcept
{ {
// delegate the call to get_ptr // delegate the call to get_ptr
return get_ptr<PointerType>(); return get_ptr<PointerType>();
@ -2824,7 +2867,7 @@ class basic_json
std::is_pointer<PointerType>::value std::is_pointer<PointerType>::value
and std::is_const<typename std::remove_pointer<PointerType>::type>::value and std::is_const<typename std::remove_pointer<PointerType>::type>::value
, int>::type = 0> , int>::type = 0>
const PointerType get_ptr() const noexcept constexpr const PointerType get_ptr() const noexcept
{ {
// delegate the call to get_impl_ptr<>() const // delegate the call to get_impl_ptr<>() const
return get_impl_ptr(static_cast<const PointerType>(nullptr)); return get_impl_ptr(static_cast<const PointerType>(nullptr));
@ -4037,7 +4080,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
iterator begin() iterator begin() noexcept
{ {
iterator result(this); iterator result(this);
result.set_begin(); result.set_begin();
@ -4047,7 +4090,7 @@ class basic_json
/*! /*!
@copydoc basic_json::cbegin() @copydoc basic_json::cbegin()
*/ */
const_iterator begin() const const_iterator begin() const noexcept
{ {
return cbegin(); return cbegin();
} }
@ -4077,7 +4120,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_iterator cbegin() const const_iterator cbegin() const noexcept
{ {
const_iterator result(this); const_iterator result(this);
result.set_begin(); result.set_begin();
@ -4108,7 +4151,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
iterator end() iterator end() noexcept
{ {
iterator result(this); iterator result(this);
result.set_end(); result.set_end();
@ -4118,7 +4161,7 @@ class basic_json
/*! /*!
@copydoc basic_json::cend() @copydoc basic_json::cend()
*/ */
const_iterator end() const const_iterator end() const noexcept
{ {
return cend(); return cend();
} }
@ -4148,7 +4191,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_iterator cend() const const_iterator cend() const noexcept
{ {
const_iterator result(this); const_iterator result(this);
result.set_end(); result.set_end();
@ -4178,7 +4221,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
reverse_iterator rbegin() reverse_iterator rbegin() noexcept
{ {
return reverse_iterator(end()); return reverse_iterator(end());
} }
@ -4186,7 +4229,7 @@ class basic_json
/*! /*!
@copydoc basic_json::crbegin() @copydoc basic_json::crbegin()
*/ */
const_reverse_iterator rbegin() const const_reverse_iterator rbegin() const noexcept
{ {
return crbegin(); return crbegin();
} }
@ -4215,7 +4258,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
reverse_iterator rend() reverse_iterator rend() noexcept
{ {
return reverse_iterator(begin()); return reverse_iterator(begin());
} }
@ -4223,7 +4266,7 @@ class basic_json
/*! /*!
@copydoc basic_json::crend() @copydoc basic_json::crend()
*/ */
const_reverse_iterator rend() const const_reverse_iterator rend() const noexcept
{ {
return crend(); return crend();
} }
@ -4252,7 +4295,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_reverse_iterator crbegin() const const_reverse_iterator crbegin() const noexcept
{ {
return const_reverse_iterator(cend()); return const_reverse_iterator(cend());
} }
@ -4281,7 +4324,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_reverse_iterator crend() const const_reverse_iterator crend() const noexcept
{ {
return const_reverse_iterator(cbegin()); return const_reverse_iterator(cbegin());
} }
@ -5098,7 +5141,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
friend bool operator<(const value_t lhs, const value_t rhs) friend bool operator<(const value_t lhs, const value_t rhs) noexcept
{ {
static constexpr std::array<uint8_t, 8> order = {{ static constexpr std::array<uint8_t, 8> order = {{
0, // null 0, // null
@ -5664,7 +5707,7 @@ class basic_json
/////////////////////////// ///////////////////////////
/// return the type as string /// return the type as string
string_t type_name() const string_t type_name() const noexcept
{ {
switch (m_type) switch (m_type)
{ {
@ -5742,7 +5785,7 @@ class basic_json
@complexity Linear in the length of string @a s. @complexity Linear in the length of string @a s.
*/ */
static string_t escape_string(const string_t& s) noexcept static string_t escape_string(const string_t& s)
{ {
const auto space = extra_space(s); const auto space = extra_space(s);
if (space == 0) if (space == 0)
@ -6048,37 +6091,37 @@ class basic_json
{ {
public: public:
/// set iterator to a defined beginning /// set iterator to a defined beginning
void set_begin() void set_begin() noexcept
{ {
m_it = begin_value; m_it = begin_value;
} }
/// set iterator to a defined past the end /// set iterator to a defined past the end
void set_end() void set_end() noexcept
{ {
m_it = end_value; m_it = end_value;
} }
/// return whether the iterator can be dereferenced /// return whether the iterator can be dereferenced
bool is_begin() const constexpr bool is_begin() const noexcept
{ {
return (m_it == begin_value); return (m_it == begin_value);
} }
/// return whether the iterator is at end /// return whether the iterator is at end
bool is_end() const constexpr bool is_end() const noexcept
{ {
return (m_it == end_value); return (m_it == end_value);
} }
/// return reference to the value to change and compare /// return reference to the value to change and compare
operator difference_type& () operator difference_type& () noexcept
{ {
return m_it; return m_it;
} }
/// return value to compare /// return value to compare
operator difference_type () const constexpr operator difference_type () const noexcept
{ {
return m_it; return m_it;
} }
@ -6108,7 +6151,7 @@ class basic_json
primitive_iterator_t primitive_iterator; primitive_iterator_t primitive_iterator;
/// create an uninitialized internal_iterator /// create an uninitialized internal_iterator
internal_iterator() internal_iterator() noexcept
: object_iterator(), array_iterator(), primitive_iterator() : object_iterator(), array_iterator(), primitive_iterator()
{} {}
}; };
@ -6128,7 +6171,7 @@ class basic_json
size_t array_index = 0; size_t array_index = 0;
public: public:
iteration_proxy_internal(IteratorType it) explicit iteration_proxy_internal(IteratorType it) noexcept
: anchor(it) : anchor(it)
{} {}
@ -6148,7 +6191,7 @@ class basic_json
} }
/// inequality operator (needed for range-based for) /// inequality operator (needed for range-based for)
bool operator!= (const iteration_proxy_internal& o) const constexpr bool operator!= (const iteration_proxy_internal& o) const
{ {
return anchor != o.anchor; return anchor != o.anchor;
} }
@ -6192,18 +6235,18 @@ class basic_json
public: public:
/// construct iteration proxy from a container /// construct iteration proxy from a container
iteration_proxy(typename IteratorType::reference cont) explicit iteration_proxy(typename IteratorType::reference cont)
: container(cont) : container(cont)
{} {}
/// return iterator begin (needed for range-based for) /// return iterator begin (needed for range-based for)
iteration_proxy_internal begin() iteration_proxy_internal begin() noexcept
{ {
return iteration_proxy_internal(container.begin()); return iteration_proxy_internal(container.begin());
} }
/// return iterator end (needed for range-based for) /// return iterator end (needed for range-based for)
iteration_proxy_internal end() iteration_proxy_internal end() noexcept
{ {
return iteration_proxy_internal(container.end()); return iteration_proxy_internal(container.end());
} }
@ -6241,10 +6284,11 @@ class basic_json
using iterator_category = std::bidirectional_iterator_tag; using iterator_category = std::bidirectional_iterator_tag;
/// default constructor /// default constructor
const_iterator() = default; const_iterator() noexcept = default;
/// constructor for a given JSON instance /// constructor for a given JSON instance
const_iterator(pointer object) : m_object(object) explicit const_iterator(pointer object) noexcept
: m_object(object)
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6271,7 +6315,8 @@ class basic_json
} }
/// copy constructor given a nonconst iterator /// copy constructor given a nonconst iterator
const_iterator(const iterator& other) : m_object(other.m_object) explicit const_iterator(const iterator& other) noexcept
: m_object(other.m_object)
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6317,7 +6362,7 @@ class basic_json
private: private:
/// set the iterator to the first value /// set the iterator to the first value
void set_begin() void set_begin() noexcept
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6353,7 +6398,7 @@ class basic_json
} }
/// set the iterator past the last value /// set the iterator past the last value
void set_end() void set_end() noexcept
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6773,10 +6818,10 @@ class basic_json
using reference = typename basic_json::reference; using reference = typename basic_json::reference;
/// default constructor /// default constructor
iterator() = default; iterator() noexcept = default;
/// constructor for a given JSON instance /// constructor for a given JSON instance
iterator(pointer object) noexcept explicit iterator(pointer object) noexcept
: base_iterator(object) : base_iterator(object)
{} {}
@ -6915,12 +6960,12 @@ class basic_json
using reference = typename Base::reference; using reference = typename Base::reference;
/// create reverse iterator from iterator /// create reverse iterator from iterator
json_reverse_iterator(const typename base_iterator::iterator_type& it) json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
: base_iterator(it) : base_iterator(it)
{} {}
/// create reverse iterator from base class /// create reverse iterator from base class
json_reverse_iterator(const base_iterator& it) json_reverse_iterator(const base_iterator& it) noexcept
: base_iterator(it) : base_iterator(it)
{} {}
@ -7061,7 +7106,7 @@ class basic_json
} }
/// default constructor /// default constructor
lexer() = default; lexer() noexcept = default;
// switch off unwanted functions // switch off unwanted functions
lexer(const lexer&) = delete; lexer(const lexer&) = delete;
@ -7959,7 +8004,6 @@ basic_json_parser_63:
} }
} }
} }
/// append data from the stream to the internal buffer /// append data from the stream to the internal buffer
@ -7989,7 +8033,7 @@ basic_json_parser_63:
} }
/// return string representation of last read token /// return string representation of last read token
string_t get_token() const noexcept string_t get_token() const
{ {
assert(m_start != nullptr); assert(m_start != nullptr);
return string_t(reinterpret_cast<typename string_t::const_pointer>(m_start), return string_t(reinterpret_cast<typename string_t::const_pointer>(m_start),
@ -8188,17 +8232,17 @@ basic_json_parser_63:
/*! /*!
@brief static_cast between two types and indicate if it results in error @brief static_cast between two types and indicate if it results in error
This function performs a static_cast between @a source and @a dest. It This function performs a `static_cast` between @a source and @a dest.
then checks if a static_cast back to @a dest produces an error. It then checks if a `static_cast` back to @a dest produces an error.
@param[in] source the value to cast from @param[in] source the value to cast from
@param[out] dest the value to cast to @param[in, out] dest the value to cast to
@return @a true if the cast was performed without error, @a false otherwise @return true iff the cast was performed without error
*/ */
template <typename T_A, typename T_B> template <typename T_A, typename T_B>
bool attempt_cast(T_A source, T_B& dest) const static bool attempt_cast(T_A source, T_B& dest)
{ {
dest = static_cast<T_B>(source); dest = static_cast<T_B>(source);
return (source == static_cast<T_A>(dest)); return (source == static_cast<T_A>(dest));
@ -8331,7 +8375,7 @@ basic_json_parser_63:
{ {
public: public:
/// constructor for strings /// constructor for strings
parser(const string_t& s, parser_callback_t cb = nullptr) parser(const string_t& s, parser_callback_t cb = nullptr) noexcept
: callback(cb), m_lexer(s) : callback(cb), m_lexer(s)
{ {
// read first token // read first token
@ -8339,7 +8383,7 @@ basic_json_parser_63:
} }
/// a parser reading from an input stream /// a parser reading from an input stream
parser(std::istream& _is, parser_callback_t cb = nullptr) parser(std::istream& _is, parser_callback_t cb = nullptr) noexcept
: callback(cb), m_lexer(&_is) : callback(cb), m_lexer(&_is)
{ {
// read first token // read first token
@ -8552,7 +8596,7 @@ basic_json_parser_63:
} }
/// get next token from lexer /// get next token from lexer
typename lexer::token_type get_token() typename lexer::token_type get_token() noexcept
{ {
last_token = m_lexer.scan(); last_token = m_lexer.scan();
return last_token; return last_token;

212
src/json.hpp.re2c
View File

@ -941,6 +941,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this constructor never throws
exceptions.
@requirement This function helps `basic_json` satisfying the @requirement This function helps `basic_json` satisfying the
[Container](http://en.cppreference.com/w/cpp/concept/Container) [Container](http://en.cppreference.com/w/cpp/concept/Container)
requirements: requirements:
@ -967,6 +970,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this constructor never throws
exceptions.
@liveexample{The following code shows the constructor with null pointer @liveexample{The following code shows the constructor with null pointer
parameter.,basic_json__nullptr_t} parameter.,basic_json__nullptr_t}
@ -1202,7 +1208,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(boolean_t val) basic_json(boolean_t val) noexcept
: m_type(value_t::boolean), m_value(val) : m_type(value_t::boolean), m_value(val)
{} {}
@ -1235,7 +1241,7 @@ class basic_json
and std::is_same<T, number_integer_t>::value and std::is_same<T, number_integer_t>::value
, int>::type , int>::type
= 0> = 0>
basic_json(const number_integer_t val) basic_json(const number_integer_t val) noexcept
: m_type(value_t::number_integer), m_value(val) : m_type(value_t::number_integer), m_value(val)
{} {}
@ -1264,7 +1270,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(const int val) basic_json(const int val) noexcept
: m_type(value_t::number_integer), : m_type(value_t::number_integer),
m_value(static_cast<number_integer_t>(val)) m_value(static_cast<number_integer_t>(val))
{} {}
@ -1329,7 +1335,7 @@ class basic_json
and std::is_same<T, number_unsigned_t>::value and std::is_same<T, number_unsigned_t>::value
, int>::type , int>::type
= 0> = 0>
basic_json(const number_unsigned_t val) basic_json(const number_unsigned_t val) noexcept
: m_type(value_t::number_unsigned), m_value(val) : m_type(value_t::number_unsigned), m_value(val)
{} {}
@ -1389,7 +1395,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
basic_json(const number_float_t val) basic_json(const number_float_t val) noexcept
: m_type(value_t::number_float), m_value(val) : m_type(value_t::number_float), m_value(val)
{ {
// replace infinity and NAN by null // replace infinity and NAN by null
@ -2078,12 +2084,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `type()` for all JSON @liveexample{The following code exemplifies `type()` for all JSON
types.,type} types.,type}
@since version 1.0.0 @since version 1.0.0
*/ */
value_t type() const noexcept constexpr value_t type() const noexcept
{ {
return m_type; return m_type;
} }
@ -2099,6 +2108,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_primitive()` for all JSON @liveexample{The following code exemplifies `is_primitive()` for all JSON
types.,is_primitive} types.,is_primitive}
@ -2110,7 +2122,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_primitive() const noexcept constexpr bool is_primitive() const noexcept
{ {
return is_null() or is_string() or is_boolean() or is_number(); return is_null() or is_string() or is_boolean() or is_number();
} }
@ -2125,6 +2137,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_structured()` for all JSON @liveexample{The following code exemplifies `is_structured()` for all JSON
types.,is_structured} types.,is_structured}
@ -2134,7 +2149,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_structured() const noexcept constexpr bool is_structured() const noexcept
{ {
return is_array() or is_object(); return is_array() or is_object();
} }
@ -2148,12 +2163,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_null()` for all JSON @liveexample{The following code exemplifies `is_null()` for all JSON
types.,is_null} types.,is_null}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_null() const noexcept constexpr bool is_null() const noexcept
{ {
return m_type == value_t::null; return m_type == value_t::null;
} }
@ -2167,12 +2185,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_boolean()` for all JSON @liveexample{The following code exemplifies `is_boolean()` for all JSON
types.,is_boolean} types.,is_boolean}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_boolean() const noexcept constexpr bool is_boolean() const noexcept
{ {
return m_type == value_t::boolean; return m_type == value_t::boolean;
} }
@ -2188,6 +2209,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number()` for all JSON @liveexample{The following code exemplifies `is_number()` for all JSON
types.,is_number} types.,is_number}
@ -2199,7 +2223,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number() const noexcept constexpr bool is_number() const noexcept
{ {
return is_number_integer() or is_number_float(); return is_number_integer() or is_number_float();
} }
@ -2215,6 +2239,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_integer()` for all @liveexample{The following code exemplifies `is_number_integer()` for all
JSON types.,is_number_integer} JSON types.,is_number_integer}
@ -2225,7 +2252,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number_integer() const noexcept constexpr bool is_number_integer() const noexcept
{ {
return m_type == value_t::number_integer or m_type == value_t::number_unsigned; return m_type == value_t::number_integer or m_type == value_t::number_unsigned;
} }
@ -2240,6 +2267,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_unsigned()` for all @liveexample{The following code exemplifies `is_number_unsigned()` for all
JSON types.,is_number_unsigned} JSON types.,is_number_unsigned}
@ -2250,7 +2280,7 @@ class basic_json
@since version 2.0.0 @since version 2.0.0
*/ */
bool is_number_unsigned() const noexcept constexpr bool is_number_unsigned() const noexcept
{ {
return m_type == value_t::number_unsigned; return m_type == value_t::number_unsigned;
} }
@ -2265,6 +2295,9 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_number_float()` for all @liveexample{The following code exemplifies `is_number_float()` for all
JSON types.,is_number_float} JSON types.,is_number_float}
@ -2275,7 +2308,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_number_float() const noexcept constexpr bool is_number_float() const noexcept
{ {
return m_type == value_t::number_float; return m_type == value_t::number_float;
} }
@ -2289,12 +2322,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_object()` for all JSON @liveexample{The following code exemplifies `is_object()` for all JSON
types.,is_object} types.,is_object}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_object() const noexcept constexpr bool is_object() const noexcept
{ {
return m_type == value_t::object; return m_type == value_t::object;
} }
@ -2308,12 +2344,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_array()` for all JSON @liveexample{The following code exemplifies `is_array()` for all JSON
types.,is_array} types.,is_array}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_array() const noexcept constexpr bool is_array() const noexcept
{ {
return m_type == value_t::array; return m_type == value_t::array;
} }
@ -2327,12 +2366,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_string()` for all JSON @liveexample{The following code exemplifies `is_string()` for all JSON
types.,is_string} types.,is_string}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_string() const noexcept constexpr bool is_string() const noexcept
{ {
return m_type == value_t::string; return m_type == value_t::string;
} }
@ -2351,12 +2393,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies `is_discarded()` for all JSON @liveexample{The following code exemplifies `is_discarded()` for all JSON
types.,is_discarded} types.,is_discarded}
@since version 1.0.0 @since version 1.0.0
*/ */
bool is_discarded() const noexcept constexpr bool is_discarded() const noexcept
{ {
return m_type == value_t::discarded; return m_type == value_t::discarded;
} }
@ -2371,12 +2416,15 @@ class basic_json
@complexity Constant. @complexity Constant.
@exceptionsafety No-throw guarantee: this member function never throws
exceptions.
@liveexample{The following code exemplifies the @ref value_t operator for @liveexample{The following code exemplifies the @ref value_t operator for
all JSON types.,operator__value_t} all JSON types.,operator__value_t}
@since version 1.0.0 @since version 1.0.0
*/ */
operator value_t() const noexcept constexpr operator value_t() const noexcept
{ {
return m_type; return m_type;
} }
@ -2558,16 +2606,11 @@ class basic_json
} }
/// get a boolean (explicit) /// get a boolean (explicit)
boolean_t get_impl(boolean_t*) const constexpr boolean_t get_impl(boolean_t*) const
{ {
if (is_boolean()) return is_boolean()
{ ? m_value.boolean
return m_value.boolean; : throw std::domain_error("type must be boolean, but is " + type_name());
}
else
{
throw std::domain_error("type must be boolean, but is " + type_name());
}
} }
/// get a pointer to the value (object) /// get a pointer to the value (object)
@ -2577,7 +2620,7 @@ class basic_json
} }
/// get a pointer to the value (object) /// get a pointer to the value (object)
const object_t* get_impl_ptr(const object_t*) const noexcept constexpr const object_t* get_impl_ptr(const object_t*) const noexcept
{ {
return is_object() ? m_value.object : nullptr; return is_object() ? m_value.object : nullptr;
} }
@ -2589,7 +2632,7 @@ class basic_json
} }
/// get a pointer to the value (array) /// get a pointer to the value (array)
const array_t* get_impl_ptr(const array_t*) const noexcept constexpr const array_t* get_impl_ptr(const array_t*) const noexcept
{ {
return is_array() ? m_value.array : nullptr; return is_array() ? m_value.array : nullptr;
} }
@ -2601,7 +2644,7 @@ class basic_json
} }
/// get a pointer to the value (string) /// get a pointer to the value (string)
const string_t* get_impl_ptr(const string_t*) const noexcept constexpr const string_t* get_impl_ptr(const string_t*) const noexcept
{ {
return is_string() ? m_value.string : nullptr; return is_string() ? m_value.string : nullptr;
} }
@ -2613,7 +2656,7 @@ class basic_json
} }
/// get a pointer to the value (boolean) /// get a pointer to the value (boolean)
const boolean_t* get_impl_ptr(const boolean_t*) const noexcept constexpr const boolean_t* get_impl_ptr(const boolean_t*) const noexcept
{ {
return is_boolean() ? &m_value.boolean : nullptr; return is_boolean() ? &m_value.boolean : nullptr;
} }
@ -2625,7 +2668,7 @@ class basic_json
} }
/// get a pointer to the value (integer number) /// get a pointer to the value (integer number)
const number_integer_t* get_impl_ptr(const number_integer_t*) const noexcept constexpr const number_integer_t* get_impl_ptr(const number_integer_t*) const noexcept
{ {
return is_number_integer() ? &m_value.number_integer : nullptr; return is_number_integer() ? &m_value.number_integer : nullptr;
} }
@ -2637,7 +2680,7 @@ class basic_json
} }
/// get a pointer to the value (unsigned number) /// get a pointer to the value (unsigned number)
const number_unsigned_t* get_impl_ptr(const number_unsigned_t*) const noexcept constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t*) const noexcept
{ {
return is_number_unsigned() ? &m_value.number_unsigned : nullptr; return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
} }
@ -2649,7 +2692,7 @@ class basic_json
} }
/// get a pointer to the value (floating-point number) /// get a pointer to the value (floating-point number)
const number_float_t* get_impl_ptr(const number_float_t*) const noexcept constexpr const number_float_t* get_impl_ptr(const number_float_t*) const noexcept
{ {
return is_number_float() ? &m_value.number_float : nullptr; return is_number_float() ? &m_value.number_float : nullptr;
} }
@ -2774,7 +2817,7 @@ class basic_json
std::enable_if< std::enable_if<
std::is_pointer<PointerType>::value std::is_pointer<PointerType>::value
, int>::type = 0> , int>::type = 0>
const PointerType get() const noexcept constexpr const PointerType get() const noexcept
{ {
// delegate the call to get_ptr // delegate the call to get_ptr
return get_ptr<PointerType>(); return get_ptr<PointerType>();
@ -2824,7 +2867,7 @@ class basic_json
std::is_pointer<PointerType>::value std::is_pointer<PointerType>::value
and std::is_const<typename std::remove_pointer<PointerType>::type>::value and std::is_const<typename std::remove_pointer<PointerType>::type>::value
, int>::type = 0> , int>::type = 0>
const PointerType get_ptr() const noexcept constexpr const PointerType get_ptr() const noexcept
{ {
// delegate the call to get_impl_ptr<>() const // delegate the call to get_impl_ptr<>() const
return get_impl_ptr(static_cast<const PointerType>(nullptr)); return get_impl_ptr(static_cast<const PointerType>(nullptr));
@ -4037,7 +4080,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
iterator begin() iterator begin() noexcept
{ {
iterator result(this); iterator result(this);
result.set_begin(); result.set_begin();
@ -4047,7 +4090,7 @@ class basic_json
/*! /*!
@copydoc basic_json::cbegin() @copydoc basic_json::cbegin()
*/ */
const_iterator begin() const const_iterator begin() const noexcept
{ {
return cbegin(); return cbegin();
} }
@ -4077,7 +4120,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_iterator cbegin() const const_iterator cbegin() const noexcept
{ {
const_iterator result(this); const_iterator result(this);
result.set_begin(); result.set_begin();
@ -4108,7 +4151,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
iterator end() iterator end() noexcept
{ {
iterator result(this); iterator result(this);
result.set_end(); result.set_end();
@ -4118,7 +4161,7 @@ class basic_json
/*! /*!
@copydoc basic_json::cend() @copydoc basic_json::cend()
*/ */
const_iterator end() const const_iterator end() const noexcept
{ {
return cend(); return cend();
} }
@ -4148,7 +4191,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_iterator cend() const const_iterator cend() const noexcept
{ {
const_iterator result(this); const_iterator result(this);
result.set_end(); result.set_end();
@ -4178,7 +4221,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
reverse_iterator rbegin() reverse_iterator rbegin() noexcept
{ {
return reverse_iterator(end()); return reverse_iterator(end());
} }
@ -4186,7 +4229,7 @@ class basic_json
/*! /*!
@copydoc basic_json::crbegin() @copydoc basic_json::crbegin()
*/ */
const_reverse_iterator rbegin() const const_reverse_iterator rbegin() const noexcept
{ {
return crbegin(); return crbegin();
} }
@ -4215,7 +4258,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
reverse_iterator rend() reverse_iterator rend() noexcept
{ {
return reverse_iterator(begin()); return reverse_iterator(begin());
} }
@ -4223,7 +4266,7 @@ class basic_json
/*! /*!
@copydoc basic_json::crend() @copydoc basic_json::crend()
*/ */
const_reverse_iterator rend() const const_reverse_iterator rend() const noexcept
{ {
return crend(); return crend();
} }
@ -4252,7 +4295,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_reverse_iterator crbegin() const const_reverse_iterator crbegin() const noexcept
{ {
return const_reverse_iterator(cend()); return const_reverse_iterator(cend());
} }
@ -4281,7 +4324,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
const_reverse_iterator crend() const const_reverse_iterator crend() const noexcept
{ {
return const_reverse_iterator(cbegin()); return const_reverse_iterator(cbegin());
} }
@ -5098,7 +5141,7 @@ class basic_json
@since version 1.0.0 @since version 1.0.0
*/ */
friend bool operator<(const value_t lhs, const value_t rhs) friend bool operator<(const value_t lhs, const value_t rhs) noexcept
{ {
static constexpr std::array<uint8_t, 8> order = {{ static constexpr std::array<uint8_t, 8> order = {{
0, // null 0, // null
@ -5664,7 +5707,7 @@ class basic_json
/////////////////////////// ///////////////////////////
/// return the type as string /// return the type as string
string_t type_name() const string_t type_name() const noexcept
{ {
switch (m_type) switch (m_type)
{ {
@ -5742,7 +5785,7 @@ class basic_json
@complexity Linear in the length of string @a s. @complexity Linear in the length of string @a s.
*/ */
static string_t escape_string(const string_t& s) noexcept static string_t escape_string(const string_t& s)
{ {
const auto space = extra_space(s); const auto space = extra_space(s);
if (space == 0) if (space == 0)
@ -6048,37 +6091,37 @@ class basic_json
{ {
public: public:
/// set iterator to a defined beginning /// set iterator to a defined beginning
void set_begin() void set_begin() noexcept
{ {
m_it = begin_value; m_it = begin_value;
} }
/// set iterator to a defined past the end /// set iterator to a defined past the end
void set_end() void set_end() noexcept
{ {
m_it = end_value; m_it = end_value;
} }
/// return whether the iterator can be dereferenced /// return whether the iterator can be dereferenced
bool is_begin() const constexpr bool is_begin() const noexcept
{ {
return (m_it == begin_value); return (m_it == begin_value);
} }
/// return whether the iterator is at end /// return whether the iterator is at end
bool is_end() const constexpr bool is_end() const noexcept
{ {
return (m_it == end_value); return (m_it == end_value);
} }
/// return reference to the value to change and compare /// return reference to the value to change and compare
operator difference_type& () operator difference_type& () noexcept
{ {
return m_it; return m_it;
} }
/// return value to compare /// return value to compare
operator difference_type () const constexpr operator difference_type () const noexcept
{ {
return m_it; return m_it;
} }
@ -6108,7 +6151,7 @@ class basic_json
primitive_iterator_t primitive_iterator; primitive_iterator_t primitive_iterator;
/// create an uninitialized internal_iterator /// create an uninitialized internal_iterator
internal_iterator() internal_iterator() noexcept
: object_iterator(), array_iterator(), primitive_iterator() : object_iterator(), array_iterator(), primitive_iterator()
{} {}
}; };
@ -6128,7 +6171,7 @@ class basic_json
size_t array_index = 0; size_t array_index = 0;
public: public:
iteration_proxy_internal(IteratorType it) explicit iteration_proxy_internal(IteratorType it) noexcept
: anchor(it) : anchor(it)
{} {}
@ -6148,7 +6191,7 @@ class basic_json
} }
/// inequality operator (needed for range-based for) /// inequality operator (needed for range-based for)
bool operator!= (const iteration_proxy_internal& o) const constexpr bool operator!= (const iteration_proxy_internal& o) const
{ {
return anchor != o.anchor; return anchor != o.anchor;
} }
@ -6192,18 +6235,18 @@ class basic_json
public: public:
/// construct iteration proxy from a container /// construct iteration proxy from a container
iteration_proxy(typename IteratorType::reference cont) explicit iteration_proxy(typename IteratorType::reference cont)
: container(cont) : container(cont)
{} {}
/// return iterator begin (needed for range-based for) /// return iterator begin (needed for range-based for)
iteration_proxy_internal begin() iteration_proxy_internal begin() noexcept
{ {
return iteration_proxy_internal(container.begin()); return iteration_proxy_internal(container.begin());
} }
/// return iterator end (needed for range-based for) /// return iterator end (needed for range-based for)
iteration_proxy_internal end() iteration_proxy_internal end() noexcept
{ {
return iteration_proxy_internal(container.end()); return iteration_proxy_internal(container.end());
} }
@ -6241,10 +6284,11 @@ class basic_json
using iterator_category = std::bidirectional_iterator_tag; using iterator_category = std::bidirectional_iterator_tag;
/// default constructor /// default constructor
const_iterator() = default; const_iterator() noexcept = default;
/// constructor for a given JSON instance /// constructor for a given JSON instance
const_iterator(pointer object) : m_object(object) explicit const_iterator(pointer object) noexcept
: m_object(object)
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6271,7 +6315,8 @@ class basic_json
} }
/// copy constructor given a nonconst iterator /// copy constructor given a nonconst iterator
const_iterator(const iterator& other) : m_object(other.m_object) explicit const_iterator(const iterator& other) noexcept
: m_object(other.m_object)
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6317,7 +6362,7 @@ class basic_json
private: private:
/// set the iterator to the first value /// set the iterator to the first value
void set_begin() void set_begin() noexcept
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6353,7 +6398,7 @@ class basic_json
} }
/// set the iterator past the last value /// set the iterator past the last value
void set_end() void set_end() noexcept
{ {
assert(m_object != nullptr); assert(m_object != nullptr);
@ -6773,10 +6818,10 @@ class basic_json
using reference = typename basic_json::reference; using reference = typename basic_json::reference;
/// default constructor /// default constructor
iterator() = default; iterator() noexcept = default;
/// constructor for a given JSON instance /// constructor for a given JSON instance
iterator(pointer object) noexcept explicit iterator(pointer object) noexcept
: base_iterator(object) : base_iterator(object)
{} {}
@ -6915,12 +6960,12 @@ class basic_json
using reference = typename Base::reference; using reference = typename Base::reference;
/// create reverse iterator from iterator /// create reverse iterator from iterator
json_reverse_iterator(const typename base_iterator::iterator_type& it) json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
: base_iterator(it) : base_iterator(it)
{} {}
/// create reverse iterator from base class /// create reverse iterator from base class
json_reverse_iterator(const base_iterator& it) json_reverse_iterator(const base_iterator& it) noexcept
: base_iterator(it) : base_iterator(it)
{} {}
@ -7061,7 +7106,7 @@ class basic_json
} }
/// default constructor /// default constructor
lexer() = default; lexer() noexcept = default;
// switch off unwanted functions // switch off unwanted functions
lexer(const lexer&) = delete; lexer(const lexer&) = delete;
@ -7269,7 +7314,6 @@ class basic_json
// anything else is an error // anything else is an error
. { return token_type::parse_error; } . { return token_type::parse_error; }
*/ */
} }
/// append data from the stream to the internal buffer /// append data from the stream to the internal buffer
@ -7299,7 +7343,7 @@ class basic_json
} }
/// return string representation of last read token /// return string representation of last read token
string_t get_token() const noexcept string_t get_token() const
{ {
assert(m_start != nullptr); assert(m_start != nullptr);
return string_t(reinterpret_cast<typename string_t::const_pointer>(m_start), return string_t(reinterpret_cast<typename string_t::const_pointer>(m_start),
@ -7498,17 +7542,17 @@ class basic_json
/*! /*!
@brief static_cast between two types and indicate if it results in error @brief static_cast between two types and indicate if it results in error
This function performs a static_cast between @a source and @a dest. It This function performs a `static_cast` between @a source and @a dest.
then checks if a static_cast back to @a dest produces an error. It then checks if a `static_cast` back to @a dest produces an error.
@param[in] source the value to cast from @param[in] source the value to cast from
@param[out] dest the value to cast to @param[in, out] dest the value to cast to
@return @a true if the cast was performed without error, @a false otherwise @return true iff the cast was performed without error
*/ */
template <typename T_A, typename T_B> template <typename T_A, typename T_B>
bool attempt_cast(T_A source, T_B& dest) const static bool attempt_cast(T_A source, T_B& dest)
{ {
dest = static_cast<T_B>(source); dest = static_cast<T_B>(source);
return (source == static_cast<T_A>(dest)); return (source == static_cast<T_A>(dest));
@ -7641,7 +7685,7 @@ class basic_json
{ {
public: public:
/// constructor for strings /// constructor for strings
parser(const string_t& s, parser_callback_t cb = nullptr) parser(const string_t& s, parser_callback_t cb = nullptr) noexcept
: callback(cb), m_lexer(s) : callback(cb), m_lexer(s)
{ {
// read first token // read first token
@ -7649,7 +7693,7 @@ class basic_json
} }
/// a parser reading from an input stream /// a parser reading from an input stream
parser(std::istream& _is, parser_callback_t cb = nullptr) parser(std::istream& _is, parser_callback_t cb = nullptr) noexcept
: callback(cb), m_lexer(&_is) : callback(cb), m_lexer(&_is)
{ {
// read first token // read first token
@ -7862,7 +7906,7 @@ class basic_json
} }
/// get next token from lexer /// get next token from lexer
typename lexer::token_type get_token() typename lexer::token_type get_token() noexcept
{ {
last_token = m_lexer.scan(); last_token = m_lexer.scan();
return last_token; return last_token;