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/*
* Copyright (C) 2008 Apple Inc. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. OR
* CONTRIBUTORS 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.
*/
#ifndef CharacterClassConstructor_h
#define CharacterClassConstructor_h
#if ENABLE(WREC)
#include "ustring.h"
namespace JSC {
struct CharacterClassRange {
UChar begin;
UChar end;
};
struct CharacterClass {
const UChar* matches;
unsigned numMatches;
const CharacterClassRange* ranges;
unsigned numRanges;
const UChar* matchesUnicode;
unsigned numMatchesUnicode;
const CharacterClassRange* rangesUnicode;
unsigned numRangesUnicode;
};
CharacterClass& getCharacterClassNewline();
CharacterClass& getCharacterClassDigits();
CharacterClass& getCharacterClassSpaces();
CharacterClass& getCharacterClassWordchar();
CharacterClass& getCharacterClassNondigits();
CharacterClass& getCharacterClassNonspaces();
CharacterClass& getCharacterClassNonwordchar();
class CharacterClassConstructor {
public:
CharacterClassConstructor(bool isCaseInsensitive)
: m_charBuffer(-1)
, m_isPendingDash(false)
, m_isCaseInsensitive(isCaseInsensitive)
, m_isUpsideDown(false)
{
}
void flush();
// We need to flush prior to an escaped hyphen to prevent it as being treated as indicating
// a range, e.g. [a\-c] we flush prior to adding the hyphen so that this is not treated as
// [a-c]. However, we do not want to flush if we have already seen a non escaped hyphen -
// e.g. [+-\-] should be treated the same as [+--], producing a range that will also match
// a comma.
void flushBeforeEscapedHyphen()
{
if (!m_isPendingDash)
flush();
}
void put(UChar ch);
void append(CharacterClass& other);
bool isUpsideDown() { return m_isUpsideDown; }
ALWAYS_INLINE CharacterClass charClass()
{
CharacterClass newCharClass = {
m_matches.begin(), m_matches.size(),
m_ranges.begin(), m_ranges.size(),
m_matchesUnicode.begin(), m_matchesUnicode.size(),
m_rangesUnicode.begin(), m_rangesUnicode.size(),
};
return newCharClass;
}
private:
void addSorted(Vector<UChar>& matches, UChar ch);
void addSortedRange(Vector<CharacterClassRange>& ranges, UChar lo, UChar hi);
int m_charBuffer;
bool m_isPendingDash;
bool m_isCaseInsensitive;
bool m_isUpsideDown;
Vector<UChar> m_matches;
Vector<CharacterClassRange> m_ranges;
Vector<UChar> m_matchesUnicode;
Vector<CharacterClassRange> m_rangesUnicode;
};
}
#endif // ENABLE(WREC)
#endif // CharacterClassConstructor_h
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