Index: Source/core/css/parser/SizesCalcParser.h |
diff --git a/Source/core/css/parser/SizesCalcParser.h b/Source/core/css/parser/SizesCalcParser.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..af6487ad56621c59ffe18c38f95a391e05f75942 |
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+++ b/Source/core/css/parser/SizesCalcParser.h |
@@ -0,0 +1,59 @@ |
+// 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. |
+ |
+#ifndef SizesCalcParser_h |
+#define SizesCalcParser_h |
+ |
+#include "core/css/MediaValues.h" |
+#include "core/css/parser/MediaQueryToken.h" |
+#include "wtf/text/WTFString.h" |
+ |
+namespace WebCore { |
+ |
+struct SizesCalcValue { |
+ double value; |
+ bool isLength; |
+ UChar operation; |
+ |
+ SizesCalcValue() |
+ : value(0) |
+ , isLength(false) |
+ , operation(0) |
+ { |
+ } |
+ |
+ SizesCalcValue(double lengthValue) |
+ : value(lengthValue) |
+ , isLength(true) |
+ , operation(0) |
+ { |
+ } |
+}; |
+ |
+class SizesCalcParser { |
+ |
+public: |
+ static bool parse(MediaQueryTokenIterator start, MediaQueryTokenIterator end, PassRefPtr<MediaValues>, unsigned& result); |
+ |
+private: |
+ SizesCalcParser(PassRefPtr<MediaValues> mediaValues) |
+ : m_mediaValues(mediaValues) |
+ { |
+ } |
+ |
+ bool calcToReversePolishNotation(MediaQueryTokenIterator start, MediaQueryTokenIterator end); |
+ bool calculate(unsigned& result); |
+ void appendNumber(const MediaQueryToken&); |
+ bool appendLength(const MediaQueryToken&); |
+ bool handleOperator(Vector<MediaQueryToken>& stack, const MediaQueryToken&); |
+ void appendOperator(const MediaQueryToken&); |
+ |
+ Vector<SizesCalcValue> m_valueList; |
+ RefPtr<MediaValues> m_mediaValues; |
+}; |
+ |
+} // namespace WebCore |
+ |
+#endif // SizesCalcParser_h |
+ |