[#BloombergLP-bsltf-ArgumentType]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsltf.adoc[bsltf]::ArgumentType
:relfileprefix: ../../
:mrdocs:

Non‐allocating integer wrapper that tracks copy and move operations.

== Synopsis

Declared in `<bsltf_argumenttype.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<int N>
class ArgumentType;
----

== Description

This class template wraps an integer value and provides implicit conversion to, and explicit conversion from, `int`, while keeping track of copy and move operations. Its main purpose is for following an argument through a forwarding interface in test drivers. Each value of the template parameter `N` yields a unique type, enabling a test driver to distingusih them when calling through a function template interface, thereby avoiding ambiguities or accidental switching of arguments in the implementation of test‐class methods and constructors or in calls to methods and constructors of a class template under test. When an object of this type is copied or moved (via construction or assignment), the value returned by the `copyMoveState` accessor (the _copy/move_ _state_), is updated for the target object and, in the case of a move, for the source object as well.

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsltf/ArgumentType/2constructor-08.adoc[`ArgumentType`]         [.small]#[constructor]#
| Constructors
| xref:BloombergLP/bsltf/ArgumentType/2destructor.adoc[`~ArgumentType`] [.small]#[destructor]#
| Destroy this object.
| xref:BloombergLP/bsltf/ArgumentType/operator_assign-09.adoc[`operator=`] 
| Assignment operators
| xref:BloombergLP/bsltf/ArgumentType/copyMoveState.adoc[`copyMoveState`] 
| Return the copy/move state of this object.
| xref:BloombergLP/bsltf/ArgumentType/movedFrom.adoc[`movedFrom`] 
| Return whether this object was the source of a move operation.
| xref:BloombergLP/bsltf/ArgumentType/movedInto.adoc[`movedInto`] 
| Return whether this object was the target of a move operation.
| xref:BloombergLP/bsltf/ArgumentType/reset.adoc[`reset`] 
| Set this object to the default‐constructed state.
| xref:BloombergLP/bsltf/ArgumentType/set.adoc[`set`] 
| Set this object's value and copy/move state.
| xref:BloombergLP/bsltf/ArgumentType/2conversion.adoc[`operator int`] 
| Return the value of this object.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/bsltf/copyMoveState-05.adoc[BloombergLP::bsltf::copyMoveState]`
| Return the copy/move state of the specified `obj`.
|===

== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsltf/debugprint-01f.adoc[`debugprint`]
| Print the specified `object` as a string.
|===

== Derived Classes

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsltf/ArgumentTypeByValue.adoc[`ArgumentTypeByValue`] 
| Pass‐by‐value wrapper that avoids a C++03 conversion ambiguity.
|===


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