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/******************************************************************************
*
* Copyright (C) 1997-2020 by Dimitri van Heesch.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation under the terms of the GNU General Public License is hereby
* granted. No representations are made about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
* See the GNU General Public License for more details.
*
* Documents produced by Doxygen are derivative works derived from the
* input used in their production; they are not affected by this license.
*
*/
#ifndef SYMBOLMAP_H
#define SYMBOLMAP_H
#include <algorithm>
#include <map>
#include <vector>
#include <string>
#include <utility>
//! Class implementing a symbol map that maps symbol names to objects.
//! Symbol names do not have to be unique.
//! Supports adding symbols with add(), removing symbols with remove(), and
//! finding symbols with find().
template<class T>
class SymbolMap
{
public:
using Ptr = T *;
using Map = std::multimap<std::string,Ptr>;
using iterator = typename Map::iterator;
using const_iterator = typename Map::const_iterator;
//! Add a symbol \a def into the map under key \a name
void add(const QCString &name,Ptr def)
{
m_map.insert({name.str(),def});
}
//! Remove a symbol \a def from the map that was stored under key \a name
void remove(const QCString &name,Ptr def)
{
auto range = find(name.str());
for (auto it=range.first; it!=range.second; )
{
if (it->second==def) it = m_map.erase(it); else ++it;
}
}
//! Find the list of symbols stored under key \a name
//! Returns a pair of iterators pointing to the start and end of the range of matching symbols
std::pair<const_iterator,const_iterator> find(const QCString &name) const
{
return m_map.equal_range(name.str());
}
//! Find the list of symbols stored under key \a name
//! Returns a pair of iterators pointing to the start and end of the range of matching symbols
std::pair<iterator,iterator> find(const QCString &name)
{
return m_map.equal_range(name.str());
}
iterator begin() { return m_map.begin(); }
iterator end() { return m_map.end(); }
const_iterator begin() const { return m_map.cbegin(); }
const_iterator end() const { return m_map.cend(); }
bool empty() const { return m_map.empty(); }
size_t size() const { return m_map.size(); }
private:
Map m_map;
};
#endif
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