Move UnicodeRangeSet to platform/fonts

third_party/WebKit/Source/platform/fonts/UnicodeRangeSet.h

 /*
- * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2007, 2008 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 COMPUTER, INC. ``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 COMPUTER, INC. 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.
  */
 
-#ifndef FontDataRange_h
-#define FontDataRange_h
+#ifndef UnicodeRangeSet_h
+#define UnicodeRangeSet_h
 
-#include "platform/fonts/FontData.h"
-#include "platform/fonts/SimpleFontData.h"
+#include "platform/PlatformExport.h"
+#include "platform/fonts/FontDataRange.h"
 #include "wtf/Allocator.h"
-#include "wtf/text/CharacterNames.h"
+#include "wtf/text/Unicode.h"
 
 namespace blink {
 
-class SimpleFontData;
-
-struct FontDataRange {
+struct PLATFORM_EXPORT UnicodeRange {
     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
-    explicit FontDataRange(PassRefPtr<SimpleFontData> fontData)
-        : m_from(0)
-        , m_to(kMaxCodepoint)
-        , m_fontData(fontData)
-    {
-    }
-
-    FontDataRange()
-        : m_from(0)
-        , m_to(kMaxCodepoint)
-        , m_fontData(nullptr)
-    {
-    }
-
-    explicit FontDataRange(UChar32 from, UChar32 to, PassRefPtr<SimpleFontData> fontData)
+    UnicodeRange(UChar32 from, UChar32 to)
         : m_from(from)
         , m_to(to)
-        , m_fontData(fontData)
     {
     }
 
     UChar32 from() const { return m_from; }
     UChar32 to() const { return m_to; }
-    bool contains(UChar32 testChar) { return testChar >= m_from && testChar <= m_to; }
-    bool isEntireRange() const { return !m_from && m_to >= kMaxCodepoint; }
-    bool hasFontData() const { return fontData(); }
-    PassRefPtr<SimpleFontData> fontData() const { return m_fontData; }
+    bool contains(UChar32 c) const { return m_from <= c && c <= m_to; }
+    bool operator<(const UnicodeRange& other) const
+    {
+        return m_from < other.m_from;
+    }
+    bool operator<(UChar32 c) const { return m_to < c; }
+    bool operator==(const FontDataRange& fontDataRange) const
+    {
+        return fontDataRange.from() == m_from
+            && fontDataRange.to() == m_to;
+    };
 
 private:
     UChar32 m_from;
     UChar32 m_to;
-    RefPtr<SimpleFontData> m_fontData;
+};
+
+class PLATFORM_EXPORT UnicodeRangeSet {
+    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+
+public:
+    explicit UnicodeRangeSet(const Vector<UnicodeRange>&);
+    bool contains(UChar32) const;
+    bool contains(const FontDataRange&) const;
+    bool intersectsWith(const String&) const;
+    bool isEntireRange() const { return m_ranges.isEmpty(); }
+    size_t size() const { return m_ranges.size(); }
+    const UnicodeRange& rangeAt(size_t i) const { return m_ranges[i]; }
+private:
+    Vector<UnicodeRange> m_ranges; // If empty, represents the whole code space.
 };
 
 } // namespace blink
 
 #endif