Nothing
setGeneric( "containing_type", function(object){
standardGeneric( "containing_type" )
} )
setMethod( "containing_type", "Descriptor", function(object){
retval <- .Call( Descriptor__containing_type, object@pointer )
if (length(retval@type) == 0) {
# Descriptors do not always have containing types.
# In such cases NULL is better return value than malformed Descriptor.
return(NULL)
} else {
return(retval)
}
} )
setMethod( "containing_type", "EnumDescriptor", function(object){
retval <- .Call( EnumDescriptor__containing_type, object@pointer )
if (length(name(retval)) == 0) {
# If this enum type is nested in a message type, this
# is that message type. Otherwise, NULL.
return(NULL)
} else {
return(retval)
}
} )
setMethod( "containing_type", "FieldDescriptor", function(object){
# Never NULL
.Call( FieldDescriptor__containing_type, object@pointer )
} )
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