webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 73 insertions, 0 deletions

diff --git a/Source/WebCore/css/parser/CSSTokenizerInputStream.cpp b/Source/WebCore/css/parser/CSSTokenizerInputStream.cpp
new file mode 100644
index 000000000..620e6b0f3
--- /dev/null
+++ b/Source/WebCore/css/parser/CSSTokenizerInputStream.cpp
@@ -0,0 +1,73 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright (C) 2016 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:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * 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.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "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 THE COPYRIGHT
+// OWNER 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.
+
+#include "config.h"
+#include "CSSTokenizerInputStream.h"
+
+#include "HTMLParserIdioms.h"
+
+namespace WebCore {
+
+CSSTokenizerInputStream::CSSTokenizerInputStream(const String& input)
+    : m_offset(0)
+    , m_stringLength(input.length())
+    , m_string(input.impl())
+{
+}
+
+void CSSTokenizerInputStream::advanceUntilNonWhitespace()
+{
+    // Using HTML space here rather than CSS space since we don't do preprocessing
+    if (m_string->is8Bit()) {
+        const LChar* characters = m_string->characters8();
+        while (m_offset < m_stringLength && isHTMLSpace(characters[m_offset]))
+            ++m_offset;
+    } else {
+        const UChar* characters = m_string->characters16();
+        while (m_offset < m_stringLength && isHTMLSpace(characters[m_offset]))
+            ++m_offset;
+    }
+}
+
+double CSSTokenizerInputStream::getDouble(unsigned start, unsigned end) const
+{
+    ASSERT(start <= end && ((m_offset + end) <= m_stringLength));
+    bool isResultOK = false;
+    double result = 0.0;
+    if (start < end) {
+        if (m_string->is8Bit())
+            result = charactersToDouble(m_string->characters8() + m_offset + start, end - start, &isResultOK);
+        else
+            result = charactersToDouble(m_string->characters16() + m_offset + start, end - start, &isResultOK);
+    }
+    // FIXME: It looks like callers ensure we have a valid number
+    return isResultOK ? result : 0.0;
+}
+
+} // namespace WebCore