Module ark_module::behavior

🦹 Behavior module

Behavior instances are identified through a densely packed identifier called BehaviorInstanceId.

BehaviorInstanceId uniquely identifies a triple of:

• An external behavior module handle
• A behavior type in this behavior module
• A behavior instance of this behavior type in this module

Different users of this identifier need different parts:

• BehaviorModuleHandle, while internal to Ark, consists of the high 16 bits of this id, and can be used to index into an array of behavior modules
• BehaviorTypeId consists of the module handle as well as the local type id, that is, the high 32-bits. It is used to create new behavior instances, through explicit creation or deserialization.
• ForeignBehaviorInstanceId consists of the parts that are local to a behavior module. Ark will complete it together with a BehaviorModuleHandle into a BehaviorInstanceId.

/––––– ForeignBehaviorInstanceId ————
/
LocalBehaviorInstanceId LocalBehaviorTypeId BehaviorModuleHandle 0…………………….31 32………………….47 48…………………….63 \ / -––––––– BehaviorTypeId ——————/ \ / -––––––––––––– BehaviorInstanceId ––––––––––––––/

Macros

• impl_behavior_module
  By passing a type that implements the BehaviorEntry trait, this macro will hook up and route the behavior module’s raw entry points to the trait methods.

Structs

• ForeignBehaviorInstanceId
  A unique identifier of a couple comprising a local behavior type id within a behavior module as well as a local instance id.
• IncomingMessage
  An incoming message from a controller module
• IncomingMessageRaw
  An incoming message sent from the controller module
• LocalBehaviorInstanceId
  A behavior instance index. May not be unique overall, but must form unique pairs with the corresponding LocalBehaviorTypeId of the instance’s type, resulting in a ForeignBehaviorInstanceId.
• LocalBehaviorRegistration
  Describes a behavior local to a behavior module
• LocalBehaviorTypeId
  An index of the behavior type, local to a behavior module.
• LocalModuleRegistration
  Contains all registration info for an external behavior module

Enums

• ErrorCode
  Error return codes for API functions.
• IncomingMessageAddr
  Target address of an incoming message.

Traits

• BehaviorEntry
  Ergonomic wrapper around a behavior module’s entry points.

Type Definitions

• ActorId