[#BloombergLP-baljsn-EncodeImplUtil_SelectionVisitor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/baljsn.adoc[baljsn]::EncodeImplUtil_SelectionVisitor
:relfileprefix: ../../
:mrdocs:

This component‐private class provides a function object used to encode choice selections that satisfy one of the `bdlat` type‐category concepts.

== Synopsis

Declared in `<baljsn_encodeimplutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class FORMATTER>
class EncodeImplUtil_SelectionVisitor;
----

== Description

This class's constructor closes over the `formatter`, `logStream`, and `options` parameters that are shared between all encoding operations provided in this component. The function‐call operator of this class provides an overload set that accepts a "selection" object that satisfies one of the `bdlat` type‐category concepts, and a "selection info" object that describes various metadata of the selection.

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/baljsn/EncodeImplUtil_SelectionVisitor/FormattingMode.adoc[`FormattingMode`] 
| Alias for an `int`‐valued `bdlat_FormattingMode` bit‐field.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/baljsn/EncodeImplUtil_SelectionVisitor/2constructor.adoc[`EncodeImplUtil_SelectionVisitor`]         [.small]#[constructor]#
| Construct an `EncodeImplUtil_SelectionVisitor` object having the specified `formatter`, `logStream`, `isNextObjectFirst`, and `options` attributes.
| xref:BloombergLP/baljsn/EncodeImplUtil_SelectionVisitor/isNextObjectFirst.adoc[`isNextObjectFirst`] 
| Return the value of the `isNextObjectFirst` attribute of this object.
| xref:BloombergLP/baljsn/EncodeImplUtil_SelectionVisitor/operator_call.adoc[`operator()`] 
| Encode the JSON representation of `selection` using `selectionInfo`.
|===



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