Index: third_party/WebKit/Source/wtf/text/StringView.cpp |
diff --git a/third_party/WebKit/Source/wtf/text/StringView.cpp b/third_party/WebKit/Source/wtf/text/StringView.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ae69b3178d03a2ef5800f1d68426df6b9c449495 |
--- /dev/null |
+++ b/third_party/WebKit/Source/wtf/text/StringView.cpp |
@@ -0,0 +1,48 @@ |
+// Copyright 2016 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 "wtf/text/StringView.h" |
+ |
+#include "wtf/text/StringImpl.h" |
+#include "wtf/text/WTFString.h" |
+ |
+namespace WTF { |
+ |
+StringView::StringView(const UChar* chars, unsigned length) |
+ : m_length(length) |
+ , m_is8Bit(false) |
+{ |
+ SECURITY_DCHECK(!chars || length <= lengthOfNullTerminatedString(chars)); |
+ m_data.characters16 = chars; |
+} |
+ |
+StringView::StringView(const UChar* chars) |
+ : StringView(chars, chars ? lengthOfNullTerminatedString(chars) : 0) {} |
+ |
+String StringView::toString() const |
+{ |
+ if (!m_data.bytes) |
haraken
2016/05/26 22:27:22
isNull()
esprehn
2016/05/26 22:40:21
done, also added a case for empty strings.
|
+ return String(); |
+ if (is8Bit()) |
+ return String(m_data.characters8, m_length); |
+ return String(m_data.characters16, m_length); |
+} |
+ |
+bool equalStringView(const StringView& a, const StringView& b) |
+{ |
+ if (a.length() != b.length()) |
+ return false; |
+ if (a.isNull() || b.isNull()) |
+ return a.isNull() == b.isNull(); |
haraken
2016/05/26 22:27:22
A better check would be:
if (a.length() == 0 ||
esprehn
2016/05/26 22:40:21
Yeah, checking isEmpty() works here.
|
+ if (a.is8Bit()) { |
+ if (b.is8Bit()) |
+ return WTF::equal(a.characters8(), b.characters8(), a.length()); |
+ return WTF::equal(a.characters8(), b.characters16(), a.length()); |
+ } |
+ if (b.is8Bit()) |
+ return WTF::equal(a.characters16(), b.characters8(), a.length()); |
+ return WTF::equal(a.characters16(), b.characters16(), a.length()); |
+} |
+ |
+} // namespace WTF |