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// This file is part of The New Aspell
// Copyright (C) 2001 by Kevin Atkinson under the GNU LGPL license
// version 2.0 or 2.1. You should have received a copy of the LGPL
// license along with this library if you did not you can find
// it at http://www.gnu.org/.
#ifndef STRING_LIST_HP_HEADER
#define STRING_LIST_HP_HEADER
#include "string.hpp"
#include "string_enumeration.hpp"
#include "mutable_container.hpp"
#include "posib_err.hpp"
#include <stdio.h>
#include <cstdio>
namespace acommon {
struct StringListNode {
// private data structure
// default copy & destructor unsafe
String data;
StringListNode * next;
StringListNode(ParmStr str, StringListNode * n = 0)
: data(str), next(n) {
}
};
class StringListEnumeration : public StringEnumeration {
// default copy and destructor safe
private:
StringListNode * n_;
public:
StringEnumeration * clone() const;
void assign(const StringEnumeration *);
StringListEnumeration(StringListNode * n) : n_(n) {}
const char * next() {
const char * temp;
if (n_ == 0) {
temp = 0;
} else {
temp = n_->data.c_str();
n_ = n_->next;
}
return temp;
}
bool at_end() const {
return n_ == 0;
}
};
class StringList : public MutableContainer {
// copy and destructor provided
private:
StringListNode * first;
StringListNode * * find (ParmStr str);
void copy(const StringList &);
void destroy();
public:
friend bool operator==(const StringList &, const StringList &);
StringList() : first(0) {}
StringList(const StringList & other)
{
copy(other);
}
StringList & operator= (const StringList & other)
{
destroy();
copy(other);
return *this;
}
virtual ~StringList()
{
destroy();
}
StringList * clone() const;
void assign(const StringList *);
PosibErr<bool> add(ParmStr);
PosibErr<bool> remove(ParmStr);
PosibErr<void> clear();
StringEnumeration * elements() const;
StringListEnumeration elements_obj() const
{
return StringListEnumeration(first);
}
bool empty() const { return first == 0; }
unsigned int size() const { abort(); return 0; }
};
StringList * new_string_list();
}
#endif
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