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      1 /*
      2  * Copyright (C) 2003 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef CSSParserValues_h
     22 #define CSSParserValues_h
     23 
     24 #include "AtomicString.h"
     25 
     26 namespace WebCore {
     27 
     28 class CSSValue;
     29 
     30 struct CSSParserString {
     31     UChar* characters;
     32     int length;
     33 
     34     void lower();
     35 
     36     operator String() const { return String(characters, length); }
     37     operator AtomicString() const { return AtomicString(characters, length); }
     38 };
     39 
     40 struct CSSParserFunction;
     41 
     42 struct CSSParserValue {
     43     int id;
     44     bool isInt;
     45     union {
     46         double fValue;
     47         int iValue;
     48         CSSParserString string;
     49         CSSParserFunction* function;
     50     };
     51     enum {
     52         Operator = 0x100000,
     53         Function = 0x100001,
     54         Q_EMS    = 0x100002
     55     };
     56     int unit;
     57 
     58     bool isVariable() const;
     59 
     60     PassRefPtr<CSSValue> createCSSValue();
     61 };
     62 
     63 class CSSParserValueList : public FastAllocBase {
     64 public:
     65     CSSParserValueList()
     66         : m_current(0)
     67         , m_variablesCount(0)
     68     {
     69     }
     70     ~CSSParserValueList();
     71 
     72     void addValue(const CSSParserValue&);
     73     void deleteValueAt(unsigned);
     74 
     75     unsigned size() const { return m_values.size(); }
     76     CSSParserValue* current() { return m_current < m_values.size() ? &m_values[m_current] : 0; }
     77     CSSParserValue* next() { ++m_current; return current(); }
     78 
     79     CSSParserValue* valueAt(unsigned i) { return i < m_values.size() ? &m_values[i] : 0; }
     80 
     81     void clear() { m_values.clear(); }
     82 
     83     bool containsVariables() const { return m_variablesCount; }
     84 
     85 private:
     86     Vector<CSSParserValue, 4> m_values;
     87     unsigned m_current;
     88     unsigned m_variablesCount;
     89 };
     90 
     91 struct CSSParserFunction : FastAllocBase {
     92     CSSParserString name;
     93     CSSParserValueList* args;
     94 
     95     ~CSSParserFunction() { delete args; }
     96 };
     97 
     98 }
     99 
    100 #endif
    101