Move CSSParserString out of CSSParserValues.h

Source/core/css/parser/CSSParserString.h

+/*
+ * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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.
+ */
+
+#ifndef CSSParserString_h
+#define CSSParserString_h
+
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+struct CSSParserString {
+    void init(const LChar* characters, unsigned length)
+    {
+        m_data.characters8 = characters;
+        m_length = length;
+        m_is8Bit = true;
+    }
+
+    void init(const UChar* characters, unsigned length)
+    {
+        m_data.characters16 = characters;
+        m_length = length;
+        m_is8Bit = false;
+    }
+
+    void initRaw(const void* charactersRaw, unsigned length, bool is8Bit)
+    {
+        m_data.charactersRaw = charactersRaw;
+        m_length = length;
+        m_is8Bit = is8Bit;
+    }
+
+    void init(const String& string)
+    {
+        m_length = string.length();
+        if (string.isNull()) {
+            m_data.characters8 = 0;
+            m_is8Bit = true;
+            return;
+        }
+        if (string.is8Bit()) {
+            m_data.characters8 = const_cast<LChar*>(string.characters8());
+            m_is8Bit = true;
+        } else {
+            m_data.characters16 = const_cast<UChar*>(string.characters16());
+            m_is8Bit = false;
+        }
+    }
+
+    bool is8Bit() const { return m_is8Bit; }
+    const LChar* characters8() const { ASSERT(is8Bit()); return m_data.characters8; }
+    const UChar* characters16() const { ASSERT(!is8Bit()); return m_data.characters16; }
+
+    unsigned length() const { return m_length; }
+
+    UChar operator[](unsigned i) const
+    {
+        ASSERT_WITH_SECURITY_IMPLICATION(i < m_length);
+        if (is8Bit())
+            return m_data.characters8[i];
+        return m_data.characters16[i];
+    }
+
+    bool equalIgnoringCase(const char* str) const
+    {
+        bool match = is8Bit() ? WTF::equalIgnoringCase(str, characters8(), length()) : WTF::equalIgnoringCase(str, characters16(), length());
+        if (!match)
+            return false;
+        ASSERT(strlen(str) >= length());
+        return str[length()] == '\0';
+    }
+
+    operator String() const { return is8Bit() ? String(m_data.characters8, m_length) : StringImpl::create8BitIfPossible(m_data.characters16, m_length); }
+    operator AtomicString() const { return is8Bit() ? AtomicString(m_data.characters8, m_length) : AtomicString(m_data.characters16, m_length); }
+
+    union {
+        const LChar* characters8;
+        const UChar* characters16;
+        const void* charactersRaw;
+    } m_data;
+    unsigned m_length;
+    bool m_is8Bit;
+};
+
+}
+
+#endif