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#ifndef _ANTLR3MEMORY_HPP
#define _ANTLR3MEMORY_HPP
// [The "BSD licence"]
// Copyright (c) 2005-2009 Gokulakannan Somasundaram, ElectronDB
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
namespace antlr3 {
class DefaultAllocPolicy
{
public:
//limitation of c++. unable to write a typedef
template <class TYPE>
class AllocatorType : public std::allocator<TYPE>
{
public:
typedef TYPE value_type;
typedef value_type* pointer;
typedef const value_type* const_pointer;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
template<class U> struct rebind {
typedef AllocatorType<U> other;
};
AllocatorType() noexcept {}
AllocatorType( const AllocatorType& ) noexcept {}
template<typename U> AllocatorType(const AllocatorType<U>& ) noexcept{}
};
template<class TYPE>
class VectorType : public std::vector< TYPE, AllocatorType<TYPE> >
{
};
template<class TYPE>
class ListType : public std::deque< TYPE, AllocatorType<TYPE> >
{
};
template<class TYPE>
class StackType : public std::deque< TYPE, AllocatorType<TYPE> >
{
public:
void push( const TYPE& elem ) { this->push_back(elem); }
void pop() { this->pop_back(); }
TYPE& peek() { return this->back(); }
TYPE& top() { return this->back(); }
const TYPE& peek() const { return this->back(); }
const TYPE& top() const { return this->back(); }
};
template<class TYPE>
class OrderedSetType : public std::set< TYPE, std::less<TYPE>, AllocatorType<TYPE> >
{
};
template<class TYPE>
class UnOrderedSetType : public std::set< TYPE, std::less<TYPE>, AllocatorType<TYPE> >
{
};
template<class KeyType, class ValueType>
class UnOrderedMapType : public std::map< KeyType, ValueType, std::less<KeyType>,
AllocatorType<std::pair<const KeyType, ValueType> > >
{
};
template<class KeyType, class ValueType>
class OrderedMapType : public std::map< KeyType, ValueType, std::less<KeyType>,
AllocatorType<std::pair<KeyType, ValueType> > >
{
};
template<class TYPE>
class SmartPtrType : public std::unique_ptr<TYPE, std::default_delete<TYPE> >
{
typedef typename std::unique_ptr<TYPE, std::default_delete<TYPE> > BaseType;
public:
SmartPtrType() {};
SmartPtrType( SmartPtrType&& other )
: BaseType(other)
{};
SmartPtrType & operator=(SmartPtrType&& other) //= default;
{
BaseType::swap(other);
//return std::move((BaseType&)other);
return *this;
}
private:
SmartPtrType & operator=(const SmartPtrType&) /*= delete*/;
SmartPtrType(const SmartPtrType&) /*= delete*/;
};
ANTLR_INLINE static void* operator new (std::size_t bytes)
{
void* p = alloc(bytes);
return p;
}
ANTLR_INLINE static void* operator new (std::size_t , void* p) { return p; }
ANTLR_INLINE static void* operator new[]( std::size_t bytes)
{
void* p = alloc(bytes);
return p;
}
ANTLR_INLINE static void operator delete(void* p)
{
DefaultAllocPolicy::free(p);
}
ANTLR_INLINE static void operator delete(void* , void* ) {} //placement delete
ANTLR_INLINE static void operator delete[](void* p)
{
DefaultAllocPolicy::free(p);
}
ANTLR_INLINE static void* alloc( std::size_t bytes )
{
void* p = malloc(bytes);
if( p== NULL )
throw std::bad_alloc();
return p;
}
ANTLR_INLINE static void* alloc0( std::size_t bytes )
{
void* p = calloc(1, bytes);
if( p== NULL )
throw std::bad_alloc();
return p;
}
ANTLR_INLINE static void free( void* p )
{
return ::free(p);
}
ANTLR_INLINE static void* realloc(void *ptr, size_t size)
{
return ::realloc( ptr, size );
}
};
}
#endif /* _ANTLR3MEMORY_H */
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