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///////////////////////////////////////////////////////////////////////////////
// Copyright (c) Electronic Arts Inc. All rights reserved.
///////////////////////////////////////////////////////////////////////////////
#ifndef EASTL_STRING_HASH_MAP_H
#define EASTL_STRING_HASH_MAP_H
#if defined(EA_PRAGMA_ONCE_SUPPORTED)
#pragma once
#endif
#include <EASTL/hash_map.h>
#include <EASTL/string.h>
namespace eastl
{
template<typename T, typename Hash = hash<const char*>, typename Predicate = str_equal_to<const char*>, typename Allocator = EASTLAllocatorType>
class string_hash_map : public eastl::hash_map<const char*, T, Hash, Predicate, Allocator>
{
public:
typedef eastl::hash_map<const char*, T, Hash, Predicate, Allocator> base;
typedef string_hash_map<T, Hash, Predicate, Allocator> this_type;
typedef typename base::base_type::allocator_type allocator_type;
typedef typename base::base_type::insert_return_type insert_return_type;
typedef typename base::base_type::iterator iterator;
// typedef typename base::base_type::reverse_iterator reverse_iterator;
typedef typename base::base_type::const_iterator const_iterator;
typedef typename base::base_type::size_type size_type;
typedef typename base::base_type::value_type value_type;
typedef typename base::mapped_type mapped_type;
string_hash_map(const allocator_type& allocator = allocator_type()) : base(allocator) {}
string_hash_map(const string_hash_map& src, const allocator_type& allocator = allocator_type());
~string_hash_map();
void clear();
void clear(bool clearBuckets);
this_type& operator=(const this_type& x);
insert_return_type insert(const char* key, const T& value);
insert_return_type insert(const char* key);
pair<iterator, bool> insert_or_assign(const char* key, const T& value);
iterator erase(const_iterator position);
size_type erase(const char* key);
mapped_type& operator[](const char* key);
private:
char* strduplicate(const char* str);
// Not implemented right now
// insert_return_type insert(const value_type& value);
// iterator insert(iterator position, const value_type& value);
// reverse_iterator erase(reverse_iterator position);
// reverse_iterator erase(reverse_iterator first, reverse_iterator last);
};
template<typename T, typename Hash, typename Predicate, typename Allocator>
string_hash_map<T, Hash, Predicate, Allocator>::string_hash_map(const string_hash_map& src, const allocator_type& allocator) : base(allocator)
{
for (const_iterator i=src.begin(), e=src.end(); i!=e; ++i)
base::base_type::insert(eastl::make_pair(strduplicate(i->first), i->second));
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
string_hash_map<T, Hash, Predicate, Allocator>::~string_hash_map()
{
clear();
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
void string_hash_map<T, Hash, Predicate, Allocator>::clear()
{
allocator_type& allocator = base::base_type::get_allocator();
for (const_iterator i=base::base_type::begin(), e=base::base_type::end(); i!=e; ++i)
EASTLFree(allocator, (void*)i->first, 0);
base::base_type::clear();
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
void string_hash_map<T, Hash, Predicate, Allocator>::clear(bool clearBuckets)
{
allocator_type& allocator = base::base_type::get_allocator();
for (const_iterator i=base::base_type::begin(), e=base::base_type::end(); i!=e; ++i)
EASTLFree(allocator, (void*)i->first, 0);
base::base_type::clear(clearBuckets);
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::this_type&
string_hash_map<T, Hash, Predicate, Allocator>::operator=(const this_type& x)
{
allocator_type allocator = base::base_type::get_allocator();
this->~this_type();
new (this) this_type(x, allocator);
return *this;
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::insert_return_type
string_hash_map<T, Hash, Predicate, Allocator>::insert(const char* key)
{
return insert(key, mapped_type());
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::insert_return_type
string_hash_map<T, Hash, Predicate, Allocator>::insert(const char* key, const T& value)
{
EASTL_ASSERT(key);
iterator i = base::base_type::find(key);
if (i != base::base_type::end())
{
insert_return_type ret;
ret.first = i;
ret.second = false;
return ret;
}
return base::base_type::insert(eastl::make_pair(strduplicate(key), value));
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
eastl::pair<typename string_hash_map<T, Hash, Predicate, Allocator>::iterator, bool>
string_hash_map<T, Hash, Predicate, Allocator>::insert_or_assign(const char* key, const T& value)
{
iterator i = base::base_type::find(key);
if (i != base::base_type::end())
{
return base::base_type::insert_or_assign(i->first, value);
}
else
{
return base::base_type::insert_or_assign(strduplicate(key), value);
}
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::iterator
string_hash_map<T, Hash, Predicate, Allocator>::erase(const_iterator position)
{
const char* key = position->first;
iterator result = base::base_type::erase(position);
EASTLFree(base::base_type::get_allocator(), (void*)key, 0);
return result;
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::size_type
string_hash_map<T, Hash, Predicate, Allocator>::erase(const char* key)
{
const iterator it(base::base_type::find(key));
if(it != base::base_type::end())
{
erase(it);
return 1;
}
return 0;
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
typename string_hash_map<T, Hash, Predicate, Allocator>::mapped_type&
string_hash_map<T, Hash, Predicate, Allocator>::operator[](const char* key)
{
using base_value_type = typename base::base_type::value_type;
EASTL_ASSERT(key);
iterator i = base::base_type::find(key);
if (i != base::base_type::end())
return i->second;
return base::base_type::insert(base_value_type(pair_first_construct, strduplicate(key))).first->second;
}
template<typename T, typename Hash, typename Predicate, typename Allocator>
char*
string_hash_map<T, Hash, Predicate, Allocator>::strduplicate(const char* str)
{
size_t len = strlen(str);
char* result = (char*)EASTLAlloc(base::base_type::get_allocator(), (len + 1));
memcpy(result, str, len+1);
return result;
}
}
#endif
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