/src/alembic/lib/Alembic/Util/OperatorBool.h

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//-*****************************************************************************
//
// Copyright (c) 2009-2011,
//  Sony Pictures Imageworks Inc. and
//  Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// *       Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// *       Neither the name of Industrial Light & Magic nor the names of
// its contributors may be used to endorse or promote products derived
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//-*****************************************************************************

#ifndef Alembic_Util_OperatorBool_h
#define Alembic_Util_OperatorBool_h

#include <Alembic/Util/Foundation.h>

//-*****************************************************************************
#define ALEMBIC_OPERATOR_BOOL( PASS_COND )                              \
void __unspecified_bool_type_fcn() const {}                             \
typedef void (this_type::*unspecified_bool_type)() const;               \
operator unspecified_bool_type() const                                  \
{                                                                       \
    return ( PASS_COND ) ? &this_type::__unspecified_bool_type_fcn : 0; \
}                                                                       \
bool operator! () const                                                 \
{                                                                       \
    return !( PASS_COND );                                              \
}


//-*****************************************************************************
#define ALEMBIC_OVERRIDE_OPERATOR_BOOL( PASS_COND )                     \
operator unspecified_bool_type() const                                  \
{                                                                       \
    return ( PASS_COND ) ?                                              \
        &operator_bool_base_type::__unspecified_bool_type_fcn : 0;      \
}                                                                       \
bool operator! () const                                                 \
{                                                                       \
    return !( PASS_COND );                                              \
}


#endif


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Created: 2025-07-23 06:21