Source/core/css/CSSParserValues.cpp

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
atomicSubstring
trimTrailingWhitespace
addValue
insertValueAt
deleteValueAt
stealValues
createCSSValue
adoptSelectorVector
isSimple
insertTagHistory
appendTagHistory
prependTagSelector
hasHostPseudoSelector
/*
 * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
 * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "core/css/CSSParserValues.h"

#include "core/css/CSSFunctionValue.h"
#include "core/css/CSSSelectorList.h"
#include "core/html/parser/HTMLParserIdioms.h"

namespace WebCore {

using namespace WTF;

AtomicString CSSParserString::atomicSubstring(unsigned position, unsigned length) const
{
    ASSERT(m_length >= position + length);

    if (is8Bit())
        return AtomicString(characters8() + position, length);
    return AtomicString(characters16() + position, length);
}

void CSSParserString::trimTrailingWhitespace()
{
    if (is8Bit()) {
        while (m_length > 0 && isHTMLSpace<LChar>(m_data.characters8[m_length - 1]))
            --m_length;
    } else {
        while (m_length > 0 && isHTMLSpace<UChar>(m_data.characters16[m_length - 1]))
            --m_length;
    }
}

CSSParserValueList::~CSSParserValueList()
{
    size_t numValues = m_values.size();
    for (size_t i = 0; i < numValues; i++) {
        if (m_values[i].unit == CSSParserValue::Function)
            delete m_values[i].function;
        else if (m_values[i].unit == CSSParserValue::ValueList)
            delete m_values[i].valueList;
    }
}

void CSSParserValueList::addValue(const CSSParserValue& v)
{
    m_values.append(v);
}

void CSSParserValueList::insertValueAt(unsigned i, const CSSParserValue& v)
{
    m_values.insert(i, v);
}

void CSSParserValueList::deleteValueAt(unsigned i)
{
    m_values.remove(i);
}

void CSSParserValueList::stealValues(CSSParserValueList& valueList)
{
    for (unsigned i = 0; i < valueList.size(); ++i)
        m_values.append(*(valueList.valueAt(i)));
    valueList.clear();
}

PassRefPtrWillBeRawPtr<CSSValue> CSSParserValue::createCSSValue()
{
    if (id)
        return CSSPrimitiveValue::createIdentifier(id);

    if (unit == CSSParserValue::Operator)
        return CSSPrimitiveValue::createParserOperator(iValue);
    if (unit == CSSParserValue::Function)
        return CSSFunctionValue::create(function);
    if (unit == CSSParserValue::ValueList)
        return CSSValueList::createFromParserValueList(valueList);
    if (unit >= CSSParserValue::Q_EMS)
        return CSSPrimitiveValue::createAllowingMarginQuirk(fValue, CSSPrimitiveValue::CSS_EMS);

    CSSPrimitiveValue::UnitTypes primitiveUnit = static_cast<CSSPrimitiveValue::UnitTypes>(unit);
    switch (primitiveUnit) {
    case CSSPrimitiveValue::CSS_IDENT:
    case CSSPrimitiveValue::CSS_PROPERTY_ID:
    case CSSPrimitiveValue::CSS_VALUE_ID:
        return CSSPrimitiveValue::create(string, CSSPrimitiveValue::CSS_PARSER_IDENTIFIER);
    case CSSPrimitiveValue::CSS_NUMBER:
        return CSSPrimitiveValue::create(fValue, isInt ? CSSPrimitiveValue::CSS_PARSER_INTEGER : CSSPrimitiveValue::CSS_NUMBER);
    case CSSPrimitiveValue::CSS_STRING:
    case CSSPrimitiveValue::CSS_URI:
    case CSSPrimitiveValue::CSS_PARSER_HEXCOLOR:
        return CSSPrimitiveValue::create(string, primitiveUnit);
    case CSSPrimitiveValue::CSS_PERCENTAGE:
    case CSSPrimitiveValue::CSS_EMS:
    case CSSPrimitiveValue::CSS_EXS:
    case CSSPrimitiveValue::CSS_PX:
    case CSSPrimitiveValue::CSS_CM:
    case CSSPrimitiveValue::CSS_MM:
    case CSSPrimitiveValue::CSS_IN:
    case CSSPrimitiveValue::CSS_PT:
    case CSSPrimitiveValue::CSS_PC:
    case CSSPrimitiveValue::CSS_DEG:
    case CSSPrimitiveValue::CSS_RAD:
    case CSSPrimitiveValue::CSS_GRAD:
    case CSSPrimitiveValue::CSS_MS:
    case CSSPrimitiveValue::CSS_S:
    case CSSPrimitiveValue::CSS_HZ:
    case CSSPrimitiveValue::CSS_KHZ:
    case CSSPrimitiveValue::CSS_VW:
    case CSSPrimitiveValue::CSS_VH:
    case CSSPrimitiveValue::CSS_VMIN:
    case CSSPrimitiveValue::CSS_VMAX:
    case CSSPrimitiveValue::CSS_TURN:
    case CSSPrimitiveValue::CSS_REMS:
    case CSSPrimitiveValue::CSS_CHS:
    case CSSPrimitiveValue::CSS_FR:
        return CSSPrimitiveValue::create(fValue, primitiveUnit);
    case CSSPrimitiveValue::CSS_UNKNOWN:
    case CSSPrimitiveValue::CSS_DIMENSION:
    case CSSPrimitiveValue::CSS_ATTR:
    case CSSPrimitiveValue::CSS_COUNTER:
    case CSSPrimitiveValue::CSS_RECT:
    case CSSPrimitiveValue::CSS_RGBCOLOR:
    case CSSPrimitiveValue::CSS_DPPX:
    case CSSPrimitiveValue::CSS_DPI:
    case CSSPrimitiveValue::CSS_DPCM:
    case CSSPrimitiveValue::CSS_PAIR:
    case CSSPrimitiveValue::CSS_UNICODE_RANGE:
    case CSSPrimitiveValue::CSS_PARSER_INTEGER:
    case CSSPrimitiveValue::CSS_PARSER_IDENTIFIER:
    case CSSPrimitiveValue::CSS_PARSER_OPERATOR:
    case CSSPrimitiveValue::CSS_COUNTER_NAME:
    case CSSPrimitiveValue::CSS_SHAPE:
    case CSSPrimitiveValue::CSS_QUAD:
    case CSSPrimitiveValue::CSS_CALC:
    case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_NUMBER:
    case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_LENGTH:
        return nullptr;
    }

    ASSERT_NOT_REACHED();
    return nullptr;
}

CSSParserSelector::CSSParserSelector()
    : m_selector(adoptPtr(new CSSSelector()))
{
}

CSSParserSelector::CSSParserSelector(const QualifiedName& tagQName)
    : m_selector(adoptPtr(new CSSSelector(tagQName)))
{
}

CSSParserSelector::~CSSParserSelector()
{
    if (!m_tagHistory)
        return;
    Vector<OwnPtr<CSSParserSelector>, 16> toDelete;
    OwnPtr<CSSParserSelector> selector = m_tagHistory.release();
    while (true) {
        OwnPtr<CSSParserSelector> next = selector->m_tagHistory.release();
        toDelete.append(selector.release());
        if (!next)
            break;
        selector = next.release();
    }
}

void CSSParserSelector::adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector)
{
    CSSSelectorList* selectorList = new CSSSelectorList();
    selectorList->adoptSelectorVector(selectorVector);
    m_selector->setSelectorList(adoptPtr(selectorList));
}

bool CSSParserSelector::isSimple() const
{
    if (m_selector->selectorList() || m_selector->matchesPseudoElement())
        return false;

    if (!m_tagHistory)
        return true;

    if (m_selector->m_match == CSSSelector::Tag) {
        // We can't check against anyQName() here because namespace may not be nullAtom.
        // Example:
        //     @namespace "http://www.w3.org/2000/svg";
        //     svg:not(:root) { ...
        if (m_selector->tagQName().localName() == starAtom)
            return m_tagHistory->isSimple();
    }

    return false;
}

void CSSParserSelector::insertTagHistory(CSSSelector::Relation before, PassOwnPtr<CSSParserSelector> selector, CSSSelector::Relation after)
{
    if (m_tagHistory)
        selector->setTagHistory(m_tagHistory.release());
    setRelation(before);
    selector->setRelation(after);
    m_tagHistory = selector;
}

void CSSParserSelector::appendTagHistory(CSSSelector::Relation relation, PassOwnPtr<CSSParserSelector> selector)
{
    CSSParserSelector* end = this;
    while (end->tagHistory())
        end = end->tagHistory();
    end->setRelation(relation);
    end->setTagHistory(selector);
}

void CSSParserSelector::prependTagSelector(const QualifiedName& tagQName, bool tagIsForNamespaceRule)
{
    OwnPtr<CSSParserSelector> second = adoptPtr(new CSSParserSelector);
    second->m_selector = m_selector.release();
    second->m_tagHistory = m_tagHistory.release();
    m_tagHistory = second.release();

    m_selector = adoptPtr(new CSSSelector(tagQName, tagIsForNamespaceRule));
    m_selector->m_relation = CSSSelector::SubSelector;
}

bool CSSParserSelector::hasHostPseudoSelector() const
{
    CSSParserSelector* selector = const_cast<CSSParserSelector*>(this);
    do {
        if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoHostContext)
            return true;
    } while ((selector = selector->tagHistory()));
    return false;
}

} // namespace WebCore
/* [<][>][^][v][top][bottom][index][help] */
root/Source/core/css/CSSParserValues.cpp

DEFINITIONS
