Module rs_var 

Variable types and format classification for SAS data.

ReadStatVarFormatClass classifies SAS format strings into semantic categories (Date, DateTime, Time, and their sub-second precision variants), which determines the Arrow data type used during conversion.

ReadStatVarType and ReadStatVarTypeClass map ReadStat C type codes to Rust enums, used during schema construction and builder allocation.

Enums

ReadStatVarFormatClass

Semantic classification of a SAS format string.

ReadStatVarType

The storage type of a SAS variable, as reported by the ReadStat C library.

ReadStatVarTypeClass

High-level type class of a SAS variable: string or numeric.