gecko-dev/xpcom/ds/CharTokenizer.h
2012-05-21 12:12:37 +01:00

94 lines
1.9 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_CharTokenizer_h
#define mozilla_CharTokenizer_h
#include "nsDependentSubstring.h"
namespace mozilla {
template<PRUnichar delimiter>
class CharTokenizer
{
public:
CharTokenizer(const nsSubstring& aSource)
{
aSource.BeginReading(mIter);
aSource.EndReading(mEnd);
}
/**
* Checks if any more tokens are available.
*/
bool hasMoreTokens()
{
return mIter != mEnd;
}
/**
* Returns the next token.
*/
const nsDependentSubstring nextToken()
{
nsSubstring::const_char_iterator begin = mIter;
while (mIter != mEnd && (*mIter) != delimiter) {
++mIter;
}
nsSubstring::const_char_iterator end = mIter;
if (mIter != mEnd) {
++mIter;
}
return Substring(begin, end);
}
private:
nsSubstring::const_char_iterator mIter, mEnd;
};
template<char delimiter>
class CCharTokenizer
{
public:
CCharTokenizer(const nsCSubstring& aSource)
{
aSource.BeginReading(mIter);
aSource.EndReading(mEnd);
}
/**
* Checks if any more tokens are available.
*/
bool hasMoreTokens()
{
return mIter != mEnd;
}
/**
* Returns the next token.
*/
const nsDependentCSubstring nextToken()
{
nsCSubstring::const_char_iterator begin = mIter;
while (mIter != mEnd && (*mIter) != delimiter) {
++mIter;
}
nsCSubstring::const_char_iterator end = mIter;
if (mIter != mEnd) {
++mIter;
}
return Substring(begin, end);
}
private:
nsCSubstring::const_char_iterator mIter, mEnd;
};
} // namespace mozilla
#endif /* mozilla_CharTokenizer_h */