Index: Source/core/css/parser/MediaQueryInputStream.cpp |
diff --git a/Source/core/css/parser/MediaQueryInputStream.cpp b/Source/core/css/parser/MediaQueryInputStream.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..31c99d72098f3b2f05988cc3982146631aeabb5c |
--- /dev/null |
+++ b/Source/core/css/parser/MediaQueryInputStream.cpp |
@@ -0,0 +1,70 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "config.h" |
+#include "core/css/parser/MediaQueryInputStream.h" |
+ |
+#include "core/html/parser/InputStreamPreprocessor.h" |
+ |
+namespace WebCore { |
+ |
+MediaQueryInputStream::MediaQueryInputStream(String input) |
+ : m_offset(0) |
+ , m_string(input) |
+{ |
+} |
+ |
+UChar MediaQueryInputStream::peek(unsigned lookaheadOffset) |
+{ |
+ ASSERT((m_offset + lookaheadOffset) <= maxLength()); |
+ if ((m_offset + lookaheadOffset) >= m_string.length()) |
+ return kEndOfFileMarker; |
+ return m_string[m_offset + lookaheadOffset]; |
+} |
+ |
+void MediaQueryInputStream::advance(unsigned offset) |
+{ |
+ ASSERT(m_offset + offset <= maxLength()); |
+ m_offset += offset; |
+} |
+ |
+void MediaQueryInputStream::pushBack(UChar cc) |
+{ |
+ --m_offset; |
+ ASSERT(currentInputChar() == cc); |
+} |
+ |
+unsigned long long MediaQueryInputStream::getUInt(unsigned start, unsigned end) |
+{ |
+ ASSERT(start <= end && ((m_offset + end) <= m_string.length())); |
+ bool isResultOK = false; |
+ if (start < end) { |
+ unsigned long long result; |
+ if (m_string.is8Bit()) |
+ result = charactersToUInt64Strict(m_string.characters8() + m_offset + start, end - start, &isResultOK); |
+ else |
+ result = charactersToUInt64Strict(m_string.characters16() + m_offset + start, end - start, &isResultOK); |
+ if (isResultOK) |
eseidel
2014/03/13 17:22:07
nit: I might have written this as a ternary at the
|
+ return result; |
+ } |
+ return 0; |
+} |
+ |
+double MediaQueryInputStream::getDouble(unsigned start, unsigned end) |
+{ |
+ ASSERT(start <= end && ((m_offset + end) <= m_string.length())); |
+ bool isResultOK = false; |
+ if (start < end) { |
+ double result; |
+ if (m_string.is8Bit()) |
+ result = charactersToDouble(m_string.characters8() + m_offset + start, end - start, &isResultOK); |
eseidel
2014/03/13 17:22:07
Sigh. If we had a StringView class then the calle
|
+ else |
+ result = charactersToDouble(m_string.characters16() + m_offset + start, end - start, &isResultOK); |
+ if (isResultOK) |
+ return result; |
+ } |
+ return 0.0; |
+} |
+ |
+} // namespace WebCore |