83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
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#ifndef JSON_ALLOCATOR_H
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#define JSON_ALLOCATOR_H
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#include "JSONStats.h"
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#if defined(JSON_MEMORY_CALLBACKS) || defined(JSON_MEMORY_POOL)
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#include <cstddef>
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//need these for the json_nothrow
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#include "JSONDefs/Visual_C.h"
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#include "JSONDefs/GNU_C.h"
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#include "JSONDefs/Unknown_C.h"
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class JSONAllocatorRelayer {
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public:
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static void * alloc(size_t bytes) json_nothrow json_hot;
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static void dealloc(void * ptr) json_nothrow json_hot;
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};
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template <class T> class json_allocator;
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// specialize for void:
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template <> class json_allocator<void> {
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public:
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typedef void* pointer;
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typedef const void* const_pointer;
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// reference to void members are impossible.
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typedef void value_type;
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template <class U> struct rebind { typedef json_allocator<U> other; };
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};
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template <class T> class json_allocator {
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public:
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef T* pointer;
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typedef const T* const_pointer;
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typedef T& reference;
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typedef const T& const_reference;
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typedef T value_type;
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template <class U> struct rebind { typedef json_allocator<U> other; };
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//LIBJSON_OBJECT(json_allocator);
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inline json_allocator() json_nothrow {
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//LIBJSON_CTOR;
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}
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inline json_allocator(const json_allocator&) json_nothrow {
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//LIBJSON_COPY_CTOR;
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}
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template <class U> inline json_allocator(const json_allocator<U>&) json_nothrow {
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//LIBJSON_COPY_CTOR;
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}
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inline ~json_allocator() json_nothrow {
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//LIBJSON_DTOR;
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}
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inline pointer address(reference x) const { return &x; }
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inline const_pointer address(const_reference x) const { return &x; }
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inline pointer allocate(size_type n, json_allocator<void>::const_pointer = 0) json_hot {
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return (pointer)JSONAllocatorRelayer::alloc(n * sizeof(T));
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}
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inline void deallocate(pointer p, size_type) json_hot {
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JSONAllocatorRelayer::dealloc(p);
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}
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inline size_type max_size() const json_nothrow { return 0xEFFFFFFF; }
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inline void construct(pointer p, const T& val){
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new(p)T(val);
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};
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inline void destroy(pointer p){
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((T*)p) -> ~T();
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}
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};
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template <class T1, class T2> inline bool operator==(const json_allocator<T1>&, const json_allocator<T2>&) json_nothrow { return true; }
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template <class T1, class T2> inline bool operator!=(const json_allocator<T1>&, const json_allocator<T2>&) json_nothrow { return false; }
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#endif
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#endif
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