1 files changed, 107 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/private/base/SkMacros.h b/gfx/skia/skia/include/private/base/SkMacros.h
new file mode 100644
index 0000000000..a28602c4fb
--- /dev/null
+++ b/gfx/skia/skia/include/private/base/SkMacros.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkMacros_DEFINED
+#define SkMacros_DEFINED
+
+/*
+ *  Usage:  SK_MACRO_CONCAT(a, b)   to construct the symbol ab
+ *
+ *  SK_MACRO_CONCAT_IMPL_PRIV just exists to make this work. Do not use directly
+ *
+ */
+#define SK_MACRO_CONCAT(X, Y)           SK_MACRO_CONCAT_IMPL_PRIV(X, Y)
+#define SK_MACRO_CONCAT_IMPL_PRIV(X, Y)  X ## Y
+
+/*
+ *  Usage: SK_MACRO_APPEND_LINE(foo)    to make foo123, where 123 is the current
+ *                                      line number. Easy way to construct
+ *                                      unique names for local functions or
+ *                                      variables.
+ */
+#define SK_MACRO_APPEND_LINE(name)  SK_MACRO_CONCAT(name, __LINE__)
+
+#define SK_MACRO_APPEND_COUNTER(name) SK_MACRO_CONCAT(name, __COUNTER__)
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Can be used to bracket data types that must be dense/packed, e.g. hash keys.
+#if defined(__clang__)  // This should work on GCC too, but GCC diagnostic pop didn't seem to work!
+    #define SK_BEGIN_REQUIRE_DENSE _Pragma("GCC diagnostic push") \
+                                   _Pragma("GCC diagnostic error \"-Wpadded\"")
+    #define SK_END_REQUIRE_DENSE   _Pragma("GCC diagnostic pop")
+#else
+    #define SK_BEGIN_REQUIRE_DENSE
+    #define SK_END_REQUIRE_DENSE
+#endif
+
+#ifdef MOZ_SKIA
+
+  #ifdef MOZ_ASAN
+  #include "mozilla/MemoryChecking.h"
+  #define SK_INTENTIONALLY_LEAKED(X) MOZ_LSAN_INTENTIONALLY_LEAK_OBJECT(X)
+  #else
+  #define SK_INTENTIONALLY_LEAKED(x) ((void)0)
+  #endif
+
+#else // !MOZ_SKIA
+
+#if defined(__clang__) && defined(__has_feature)
+    // Some compilers have a preprocessor that does not appear to do short-circuit
+    // evaluation as expected
+    #if __has_feature(leak_sanitizer) || __has_feature(address_sanitizer)
+        // Chrome had issues if we tried to include lsan_interface.h ourselves.
+        // https://github.com/llvm/llvm-project/blob/10a35632d55bb05004fe3d0c2d4432bb74897ee7/compiler-rt/include/sanitizer/lsan_interface.h#L26
+extern "C" {
+        void __lsan_ignore_object(const void *p);
+}
+        #define SK_INTENTIONALLY_LEAKED(X) __lsan_ignore_object(X)
+    #else
+        #define SK_INTENTIONALLY_LEAKED(X) ((void)0)
+    #endif
+#else
+    #define SK_INTENTIONALLY_LEAKED(X) ((void)0)
+#endif
+
+#endif // MOZ_SKIA
+
+#define SK_INIT_TO_AVOID_WARNING    = 0
+
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Defines overloaded bitwise operators to make it easier to use an enum as a
+ * bitfield.
+ */
+#define SK_MAKE_BITFIELD_OPS(X) \
+    inline X operator ~(X a) { \
+        using U = std::underlying_type_t<X>; \
+        return (X) (~static_cast<U>(a)); \
+    } \
+    inline X operator |(X a, X b) { \
+        using U = std::underlying_type_t<X>; \
+        return (X) (static_cast<U>(a) | static_cast<U>(b)); \
+    } \
+    inline X& operator |=(X& a, X b) { \
+        return (a = a | b); \
+    } \
+    inline X operator &(X a, X b) { \
+        using U = std::underlying_type_t<X>; \
+        return (X) (static_cast<U>(a) & static_cast<U>(b)); \
+    } \
+    inline X& operator &=(X& a, X b) { \
+        return (a = a & b); \
+    }
+
+#define SK_DECL_BITFIELD_OPS_FRIENDS(X) \
+    friend X operator ~(X a); \
+    friend X operator |(X a, X b); \
+    friend X& operator |=(X& a, X b); \
+    \
+    friend X operator &(X a, X b); \
+    friend X& operator &=(X& a, X b);
+
+#endif  // SkMacros_DEFINED