Add assignment op to enum bitfield ops

include/gpu/GrTypes.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTypes_DEFINED
 #define GrTypes_DEFINED
 
 #include "SkTypes.h"
 #include "GrConfig.h"
 #include "SkMath.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 
 /**
  * Defines overloaded bitwise operators to make it easier to use an enum as a
  * bitfield.
  */
 #define GR_MAKE_BITFIELD_OPS(X) \
     inline X operator | (X a, X b) { \
         return (X) (+a | +b); \
     } \
+    inline X& operator |= (X& a, X b) { \
+        return (a = a | b); \
+    } \
     \
     inline X operator & (X a, X b) { \
         return (X) (+a & +b); \
     } \
     template <typename T> \
     inline X operator & (T a, X b) { \
         return (X) (+a & +b); \
     } \
     template <typename T> \
     inline X operator & (X a, T b) { \
         return (X) (+a & +b); \
     } \
 
 #define GR_DECL_BITFIELD_OPS_FRIENDS(X) \
     friend X operator | (X a, X b); \
+    friend X& operator |= (X& a, X b); \
     \
     friend X operator & (X a, X b); \
     \
     template <typename T> \
     friend X operator & (T a, X b); \
     \
     template <typename T> \
     friend X operator & (X a, T b); \
 ////////////////////////////////////////////////////////////////////////////////
 
@@ skipping 564 matching lines @@
 public:
     GrAutoMalloc() : INHERITED() {}
     explicit GrAutoMalloc(size_t size) : INHERITED(size) {}
     virtual ~GrAutoMalloc() {}
 private:
     typedef GrAutoMallocBaseType INHERITED;
 };
 
 #undef GrAutoMallocBaseType
 #endif