Make TextDecoration an enum class.

third_party/WebKit/Source/core/style/ComputedStyleConstants.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
@@ skipping 15 matching lines @@
  */
 
 #ifndef ComputedStyleConstants_h
 #define ComputedStyleConstants_h
 
 #include "core/ComputedStyleBaseConstants.h"
 #include <cstddef>
 
 namespace blink {
 
+template <typename Enum>
+inline bool EnumHasFlags(Enum v, Enum mask) {
+  return static_cast<unsigned>(v) & static_cast<unsigned>(mask);
+}
+
 // Some enums are automatically generated in ComputedStyleBaseConstants
 
 // TODO(sashab): Change these enums to enum classes with an unsigned underlying
 // type. Enum classes provide better type safety, and forcing an unsigned
 // underlying type prevents msvc from interpreting enums as negative numbers.
 // See: crbug.com/628043
 
 // Sides used when drawing borders and outlines. The values should run clockwise
 // from top.
 enum BoxSide { kBSTop, kBSRight, kBSBottom, kBSLeft };
@@ skipping 188 matching lines @@
   kLineBreakAfterWhiteSpace
 };
 
 enum EResize { RESIZE_NONE, RESIZE_BOTH, RESIZE_HORIZONTAL, RESIZE_VERTICAL };
 
 enum QuoteType { OPEN_QUOTE, CLOSE_QUOTE, NO_OPEN_QUOTE, NO_CLOSE_QUOTE };
 
 enum EAnimPlayState { kAnimPlayStatePlaying, kAnimPlayStatePaused };
 
 static const size_t kTextDecorationBits = 4;
-enum TextDecoration {
-  kTextDecorationNone = 0x0,
-  kTextDecorationUnderline = 0x1,
-  kTextDecorationOverline = 0x2,
-  kTextDecorationLineThrough = 0x4,
-  kTextDecorationBlink = 0x8
+enum class TextDecoration : unsigned {
+  kNone = 0x0,
+  kUnderline = 0x1,
+  kOverline = 0x2,
+  kLineThrough = 0x4,
+  kBlink = 0x8
 };
 inline TextDecoration operator|(TextDecoration a, TextDecoration b) {
-  return TextDecoration(int(a) | int(b));
+  return static_cast<TextDecoration>(static_cast<unsigned>(a) |
+                                     static_cast<unsigned>(b));
 }
 inline TextDecoration& operator|=(TextDecoration& a, TextDecoration b) {
-  return a = a | b;
+  return a = static_cast<TextDecoration>(static_cast<unsigned>(a) |
+                                         static_cast<unsigned>(b));
+}
+inline TextDecoration& operator^=(TextDecoration& a, TextDecoration b) {
+  return a = static_cast<TextDecoration>(static_cast<unsigned>(a) ^
+                                         static_cast<unsigned>(b));
 }
 
 enum TextDecorationStyle {
   kTextDecorationStyleSolid,
   kTextDecorationStyleDouble,
   kTextDecorationStyleDotted,
   kTextDecorationStyleDashed,
   kTextDecorationStyleWavy
 };
 
@@ skipping 211 matching lines @@
 // fraction, which leaves 20 bits for the integer part, making 1048575
 // the largest number.
 
 static const int kBorderWidthFractionalBits = 6;
 static const int kBorderWidthDenominator = 1 << kBorderWidthFractionalBits;
 static const int kMaxForBorderWidth = ((1 << 26) - 1) / kBorderWidthDenominator;
 
 }  // namespace blink
 
 #endif  // ComputedStyleConstants_h