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OperatorBool.h
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35 
36 #ifndef _Alembic_Util_OperatorBool_h_
37 #define _Alembic_Util_OperatorBool_h_
38 
40 
41 //-*****************************************************************************
42 #define ALEMBIC_OPERATOR_BOOL( PASS_COND ) \
43 void __unspecified_bool_type_fcn() const {} \
44 typedef void (this_type::*unspecified_bool_type)() const; \
45 operator unspecified_bool_type() const \
46 { \
47  return ( PASS_COND ) ? &this_type::__unspecified_bool_type_fcn : 0; \
48 } \
49 bool operator! () const \
50 { \
51  return !( PASS_COND ); \
52 }
53 
54 
55 //-*****************************************************************************
56 #define ALEMBIC_OVERRIDE_OPERATOR_BOOL( PASS_COND ) \
57 operator unspecified_bool_type() const \
58 { \
59  return ( PASS_COND ) ? \
60  &operator_bool_base_type::__unspecified_bool_type_fcn : 0; \
61 } \
62 bool operator! () const \
63 { \
64  return !( PASS_COND ); \
65 }
66 
67 
68 #endif
69