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more allocators

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This commit is contained in:
Niels 2015-02-15 23:13:46 +01:00
parent b387761e12
commit 429d2099ab
2 changed files with 124 additions and 54 deletions
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89
src/json.hpp
View file

@ -49,6 +49,8 @@ namespace nlohmann
(@c int64_t by default) (@c int64_t by default)
@tparam NumberFloatType type for JSON floating-point numbers @tparam NumberFloatType type for JSON floating-point numbers
(@c double by default) (@c double by default)
@tparam Allocator type of the allocator to use
(@c std::allocator by default)
@see RFC 7159 <http://rfc7159.net/rfc7159> @see RFC 7159 <http://rfc7159.net/rfc7159>
@see ECMA 404 <http://www.ecma-international.org/publications/standards/Ecma-404.htm> @see ECMA 404 <http://www.ecma-international.org/publications/standards/Ecma-404.htm>
@ -188,13 +190,17 @@ class basic_json
case (value_t::object): case (value_t::object):
{ {
m_value.object = new object_t(); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
m_value.array = new array_t(); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
break; break;
} }
@ -203,8 +209,6 @@ class basic_json
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
alloc.construct(m_value.string, ""); alloc.construct(m_value.string, "");
//m_value.string = new string_t("");
break; break;
} }
@ -240,8 +244,12 @@ class basic_json
/// create an object (explicit) /// create an object (explicit)
inline basic_json(const object_t& value) inline basic_json(const object_t& value)
: m_type(value_t::object), m_value(new object_t(value)) : m_type(value_t::object)
{} {
Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, value);
}
/// create an object (implicit) /// create an object (implicit)
template <class V, typename template <class V, typename
@ -250,13 +258,21 @@ class basic_json
std::is_constructible<basic_json, typename V::mapped_type>::value, int>::type std::is_constructible<basic_json, typename V::mapped_type>::value, int>::type
= 0> = 0>
inline basic_json(const V& value) inline basic_json(const V& value)
: m_type(value_t::object), m_value(new object_t(value.begin(), value.end())) : m_type(value_t::object)
{} {
Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, value.begin(), value.end());
}
/// create an array (explicit) /// create an array (explicit)
inline basic_json(const array_t& value) inline basic_json(const array_t& value)
: m_type(value_t::array), m_value(new array_t(value)) : m_type(value_t::array)
{} {
Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, value);
}
/// create an array (implicit) /// create an array (implicit)
template <class V, typename template <class V, typename
@ -270,12 +286,16 @@ class basic_json
std::is_constructible<basic_json, typename V::value_type>::value, int>::type std::is_constructible<basic_json, typename V::value_type>::value, int>::type
= 0> = 0>
inline basic_json(const V& value) inline basic_json(const V& value)
: m_type(value_t::array), m_value(new array_t(value.begin(), value.end())) : m_type(value_t::array)
{} {
Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, value.begin(), value.end());
}
/// create a string (explicit) /// create a string (explicit)
inline basic_json(const string_t& value) inline basic_json(const string_t& value)
: m_type(value_t::string)//, m_value(new string_t(value)) : m_type(value_t::string)
{ {
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
@ -284,7 +304,7 @@ class basic_json
/// create a string (explicit) /// create a string (explicit)
inline basic_json(const typename string_t::value_type* value) inline basic_json(const typename string_t::value_type* value)
: m_type(value_t::string)//, m_value(new string_t(value)) : m_type(value_t::string)
{ {
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
@ -379,7 +399,10 @@ class basic_json
{ {
// the initializer list is a list of pairs -> create object // the initializer list is a list of pairs -> create object
m_type = value_t::object; m_type = value_t::object;
m_value = new object_t(); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
for (auto& element : l) for (auto& element : l)
{ {
m_value.object->emplace(std::move(*(element[0].m_value.string)), std::move(element[1])); m_value.object->emplace(std::move(*(element[0].m_value.string)), std::move(element[1]));
@ -389,7 +412,9 @@ class basic_json
{ {
// the initializer list describes an array -> create array // the initializer list describes an array -> create array
m_type = value_t::array; m_type = value_t::array;
m_value = new array_t(std::move(l)); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, std::move(l));
} }
} }
@ -421,17 +446,20 @@ class basic_json
} }
case (value_t::object): case (value_t::object):
{ {
m_value.object = new object_t(*other.m_value.object); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, *other.m_value.object);
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
m_value.array = new array_t(*other.m_value.array); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, *other.m_value.array);
break; break;
} }
case (value_t::string): case (value_t::string):
{ {
// m_value.string = new string_t(*other.m_value.string);
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
alloc.construct(m_value.string, *other.m_value.string); alloc.construct(m_value.string, *other.m_value.string);
@ -485,14 +513,18 @@ class basic_json
{ {
case (value_t::object): case (value_t::object):
{ {
delete m_value.object; Allocator<object_t> alloc;
alloc.destroy(m_value.object);
alloc.deallocate(m_value.object, 1);
m_value.object = nullptr; m_value.object = nullptr;
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
delete m_value.array; Allocator<array_t> alloc;
alloc.destroy(m_value.array);
alloc.deallocate(m_value.array, 1);
m_value.array = nullptr; m_value.array = nullptr;
break; break;
} }
@ -503,9 +535,6 @@ class basic_json
alloc.destroy(m_value.string); alloc.destroy(m_value.string);
alloc.deallocate(m_value.string, 1); alloc.deallocate(m_value.string, 1);
m_value.string = nullptr; m_value.string = nullptr;
// delete m_value.string;
// m_value.string = nullptr;
break; break;
} }
@ -1055,7 +1084,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::array; m_type = value_t::array;
m_value.array = new array_t; Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
} }
// add element to array (move semantics) // add element to array (move semantics)
@ -1084,7 +1115,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::array; m_type = value_t::array;
m_value.array = new array_t; Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
} }
// add element to array // add element to array
@ -1111,7 +1144,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::object; m_type = value_t::object;
m_value.object = new object_t; Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
} }
// add element to array // add element to array

89
src/json.hpp.re2c
View file

@ -49,6 +49,8 @@ namespace nlohmann
(@c int64_t by default) (@c int64_t by default)
@tparam NumberFloatType type for JSON floating-point numbers @tparam NumberFloatType type for JSON floating-point numbers
(@c double by default) (@c double by default)
@tparam Allocator type of the allocator to use
(@c std::allocator by default)
@see RFC 7159 <http://rfc7159.net/rfc7159> @see RFC 7159 <http://rfc7159.net/rfc7159>
@see ECMA 404 <http://www.ecma-international.org/publications/standards/Ecma-404.htm> @see ECMA 404 <http://www.ecma-international.org/publications/standards/Ecma-404.htm>
@ -188,13 +190,17 @@ class basic_json
case (value_t::object): case (value_t::object):
{ {
m_value.object = new object_t(); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
m_value.array = new array_t(); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
break; break;
} }
@ -203,8 +209,6 @@ class basic_json
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
alloc.construct(m_value.string, ""); alloc.construct(m_value.string, "");
//m_value.string = new string_t("");
break; break;
} }
@ -240,8 +244,12 @@ class basic_json
/// create an object (explicit) /// create an object (explicit)
inline basic_json(const object_t& value) inline basic_json(const object_t& value)
: m_type(value_t::object), m_value(new object_t(value)) : m_type(value_t::object)
{} {
Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, value);
}
/// create an object (implicit) /// create an object (implicit)
template <class V, typename template <class V, typename
@ -250,13 +258,21 @@ class basic_json
std::is_constructible<basic_json, typename V::mapped_type>::value, int>::type std::is_constructible<basic_json, typename V::mapped_type>::value, int>::type
= 0> = 0>
inline basic_json(const V& value) inline basic_json(const V& value)
: m_type(value_t::object), m_value(new object_t(value.begin(), value.end())) : m_type(value_t::object)
{} {
Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, value.begin(), value.end());
}
/// create an array (explicit) /// create an array (explicit)
inline basic_json(const array_t& value) inline basic_json(const array_t& value)
: m_type(value_t::array), m_value(new array_t(value)) : m_type(value_t::array)
{} {
Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, value);
}
/// create an array (implicit) /// create an array (implicit)
template <class V, typename template <class V, typename
@ -270,12 +286,16 @@ class basic_json
std::is_constructible<basic_json, typename V::value_type>::value, int>::type std::is_constructible<basic_json, typename V::value_type>::value, int>::type
= 0> = 0>
inline basic_json(const V& value) inline basic_json(const V& value)
: m_type(value_t::array), m_value(new array_t(value.begin(), value.end())) : m_type(value_t::array)
{} {
Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, value.begin(), value.end());
}
/// create a string (explicit) /// create a string (explicit)
inline basic_json(const string_t& value) inline basic_json(const string_t& value)
: m_type(value_t::string)//, m_value(new string_t(value)) : m_type(value_t::string)
{ {
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
@ -284,7 +304,7 @@ class basic_json
/// create a string (explicit) /// create a string (explicit)
inline basic_json(const typename string_t::value_type* value) inline basic_json(const typename string_t::value_type* value)
: m_type(value_t::string)//, m_value(new string_t(value)) : m_type(value_t::string)
{ {
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
@ -379,7 +399,10 @@ class basic_json
{ {
// the initializer list is a list of pairs -> create object // the initializer list is a list of pairs -> create object
m_type = value_t::object; m_type = value_t::object;
m_value = new object_t(); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
for (auto& element : l) for (auto& element : l)
{ {
m_value.object->emplace(std::move(*(element[0].m_value.string)), std::move(element[1])); m_value.object->emplace(std::move(*(element[0].m_value.string)), std::move(element[1]));
@ -389,7 +412,9 @@ class basic_json
{ {
// the initializer list describes an array -> create array // the initializer list describes an array -> create array
m_type = value_t::array; m_type = value_t::array;
m_value = new array_t(std::move(l)); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, std::move(l));
} }
} }
@ -421,17 +446,20 @@ class basic_json
} }
case (value_t::object): case (value_t::object):
{ {
m_value.object = new object_t(*other.m_value.object); Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object, *other.m_value.object);
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
m_value.array = new array_t(*other.m_value.array); Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array, *other.m_value.array);
break; break;
} }
case (value_t::string): case (value_t::string):
{ {
// m_value.string = new string_t(*other.m_value.string);
Allocator<string_t> alloc; Allocator<string_t> alloc;
m_value.string = alloc.allocate(1); m_value.string = alloc.allocate(1);
alloc.construct(m_value.string, *other.m_value.string); alloc.construct(m_value.string, *other.m_value.string);
@ -485,14 +513,18 @@ class basic_json
{ {
case (value_t::object): case (value_t::object):
{ {
delete m_value.object; Allocator<object_t> alloc;
alloc.destroy(m_value.object);
alloc.deallocate(m_value.object, 1);
m_value.object = nullptr; m_value.object = nullptr;
break; break;
} }
case (value_t::array): case (value_t::array):
{ {
delete m_value.array; Allocator<array_t> alloc;
alloc.destroy(m_value.array);
alloc.deallocate(m_value.array, 1);
m_value.array = nullptr; m_value.array = nullptr;
break; break;
} }
@ -503,9 +535,6 @@ class basic_json
alloc.destroy(m_value.string); alloc.destroy(m_value.string);
alloc.deallocate(m_value.string, 1); alloc.deallocate(m_value.string, 1);
m_value.string = nullptr; m_value.string = nullptr;
// delete m_value.string;
// m_value.string = nullptr;
break; break;
} }
@ -1055,7 +1084,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::array; m_type = value_t::array;
m_value.array = new array_t; Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
} }
// add element to array (move semantics) // add element to array (move semantics)
@ -1084,7 +1115,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::array; m_type = value_t::array;
m_value.array = new array_t; Allocator<array_t> alloc;
m_value.array = alloc.allocate(1);
alloc.construct(m_value.array);
} }
// add element to array // add element to array
@ -1111,7 +1144,9 @@ class basic_json
if (m_type == value_t::null) if (m_type == value_t::null)
{ {
m_type = value_t::object; m_type = value_t::object;
m_value.object = new object_t; Allocator<object_t> alloc;
m_value.object = alloc.allocate(1);
alloc.construct(m_value.object);
} }
// add element to array // add element to array