2018-06-12 16:37:31 +00:00
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/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkMacros_DEFINED
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#define SkMacros_DEFINED
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/*
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* Usage: SK_MACRO_CONCAT(a, b) to construct the symbol ab
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*
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* SK_MACRO_CONCAT_IMPL_PRIV just exists to make this work. Do not use directly
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*
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*/
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#define SK_MACRO_CONCAT(X, Y) SK_MACRO_CONCAT_IMPL_PRIV(X, Y)
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#define SK_MACRO_CONCAT_IMPL_PRIV(X, Y) X ## Y
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/*
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* Usage: SK_MACRO_APPEND_LINE(foo) to make foo123, where 123 is the current
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* line number. Easy way to construct
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* unique names for local functions or
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* variables.
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*/
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#define SK_MACRO_APPEND_LINE(name) SK_MACRO_CONCAT(name, __LINE__)
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2021-02-03 21:56:55 +00:00
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#define SK_MACRO_APPEND_COUNTER(name) SK_MACRO_CONCAT(name, __COUNTER__)
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2018-06-12 18:50:37 +00:00
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////////////////////////////////////////////////////////////////////////////////
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// Can be used to bracket data types that must be dense, e.g. hash keys.
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#if defined(__clang__) // This should work on GCC too, but GCC diagnostic pop didn't seem to work!
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#define SK_BEGIN_REQUIRE_DENSE _Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic error \"-Wpadded\"")
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#define SK_END_REQUIRE_DENSE _Pragma("GCC diagnostic pop")
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#else
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#define SK_BEGIN_REQUIRE_DENSE
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#define SK_END_REQUIRE_DENSE
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#endif
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#define SK_INIT_TO_AVOID_WARNING = 0
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2021-11-01 15:45:19 +00:00
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Defines overloaded bitwise operators to make it easier to use an enum as a
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* bitfield.
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*/
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#define SK_MAKE_BITFIELD_OPS(X) \
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inline X operator |(X a, X b) { \
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return (X) (+a | +b); \
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} \
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inline X& operator |=(X& a, X b) { \
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return (a = a | b); \
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} \
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inline X operator &(X a, X b) { \
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return (X) (+a & +b); \
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} \
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inline X& operator &=(X& a, X b) { \
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return (a = a & b); \
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} \
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template <typename T> \
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inline X operator &(T a, X b) { \
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return (X) (+a & +b); \
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} \
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template <typename T> \
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inline X operator &(X a, T b) { \
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return (X) (+a & +b); \
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} \
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#define SK_DECL_BITFIELD_OPS_FRIENDS(X) \
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friend X operator |(X a, X b); \
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friend X& operator |=(X& a, X b); \
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\
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friend X operator &(X a, X b); \
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friend X& operator &=(X& a, X b); \
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\
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template <typename T> \
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friend X operator &(T a, X b); \
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\
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template <typename T> \
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friend X operator &(X a, T b); \
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2018-06-12 16:37:31 +00:00
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#endif // SkMacros_DEFINED
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