[#VersionBitsConditionChecker]
= VersionBitsConditionChecker
:mrdocs:

Class to implement versionbits logic.

== Synopsis

Declared in `<versionbits_impl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class VersionBitsConditionChecker
    : public xref:AbstractThresholdConditionChecker.adoc[AbstractThresholdConditionChecker]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:AbstractThresholdConditionChecker.adoc[AbstractThresholdConditionChecker]`
| Abstract class that implements BIP9‐style threshold logic, and caches results.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:VersionBitsConditionChecker/2constructor-05.adoc[`VersionBitsConditionChecker`]         [.small]#[constructor]#
| Constructors
| xref:VersionBitsConditionChecker/Condition-05.adoc[`Condition`] 
| Returns whether a version number signals this deployment's bit.
| xref:AbstractThresholdConditionChecker/GetStateFor.adoc[`GetStateFor`] 
| Returns the state for pindex A based on parent pindexPrev B. Applies any state transition if conditions are present. Caches state from first block of period.
| xref:AbstractThresholdConditionChecker/GetStateSinceHeightFor.adoc[`GetStateSinceHeightFor`] 
| Returns the height since when the ThresholdState has started for pindex A based on parent pindexPrev B, all blocks of a period share the same
| xref:AbstractThresholdConditionChecker/GetStateStatisticsFor.adoc[`GetStateStatisticsFor`] 
| Returns the numerical statistics of an in‐progress BIP9 softfork in the period including pindex If provided, signalling_blocks is set to true/false based on whether each block in the period signalled
| xref:VersionBitsConditionChecker/Mask.adoc[`Mask`] 
| Returns the version bit mask for this deployment.
|===


== Protected Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:VersionBitsConditionChecker/BeginTime.adoc[`BeginTime`]  [.small]#[virtual]#
| Returns the deployment's configured start time.
| xref:VersionBitsConditionChecker/Condition-0f.adoc[`Condition`]  [.small]#[virtual]#
| Returns whether the block's version signals this deployment's bit.
| xref:VersionBitsConditionChecker/EndTime.adoc[`EndTime`]  [.small]#[virtual]#
| Returns the deployment's configured timeout time.
| xref:VersionBitsConditionChecker/MinActivationHeight.adoc[`MinActivationHeight`]  [.small]#[virtual]#
| Returns the deployment's configured minimum activation height.
| xref:VersionBitsConditionChecker/Period.adoc[`Period`]  [.small]#[virtual]#
| Returns the deployment's configured retarget period length.
| xref:VersionBitsConditionChecker/Threshold.adoc[`Threshold`]  [.small]#[virtual]#
| Returns the deployment's configured signalling threshold.
|===



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