webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 52 insertions, 0 deletions

diff --git a/Source/WebCore/rendering/InlineIterator.cpp b/Source/WebCore/rendering/InlineIterator.cpp
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+++ b/Source/WebCore/rendering/InlineIterator.cpp
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+/*
+
+Copyright (C) 2014 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:
+1.  Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+2.  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.
+
+THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "InlineIterator.h"
+
+namespace WebCore {
+
+UCharDirection InlineIterator::surrogateTextDirection(UChar currentCodeUnit) const
+{
+    RenderText& text = downcast<RenderText>(*m_renderer);
+    UChar lead;
+    UChar trail;
+    if (U16_IS_LEAD(currentCodeUnit)) {
+        lead = currentCodeUnit;
+        trail = text.characterAt(m_pos + 1);
+        if (!U16_IS_TRAIL(trail))
+            return U_OTHER_NEUTRAL;
+    } else {
+        ASSERT(U16_IS_TRAIL(currentCodeUnit));
+        lead = text.characterAt(m_pos - 1);
+        if (!U16_IS_LEAD(lead))
+            return U_OTHER_NEUTRAL;
+        trail = currentCodeUnit;
+    }
+    return u_charDirection(U16_GET_SUPPLEMENTARY(lead, trail));
+}
+
+}