Module margin_manager 

Margin checking logic for order admission.

MarginManager owns the SpanMarginService and StandardMarginService, and implements both Portfolio (SPAN) and Standard (Deribit-style) margin checks. The engine delegates all margin decisions here.

Structs

MarginManager

Margin manager encapsulating SPAN and Standard margin services.

Functions

expiry_date_to_timestamp

Convert expiry date (YYYYMMDD format) to Unix timestamp.

Type Aliases

EnginePositionMap

Position map type alias to keep method signatures readable.