Module parser 

STEP/IFC Parser using nom

Zero-copy tokenization and fast entity scanning.

Two independent algorithms live here:

• [tokenizer]: nom-combinator tokenization (Token, parse_entity).
• [scanner]: a byte-level SIMD fast scanner (EntityScanner) that does its own hand-rolled parsing and never touches Token or nom.

Structs

EntityScanner

Fast entity scanner over raw IFC bytes without full parsing. O(n) performance for finding entities by type Uses memchr for SIMD-accelerated byte searching

Enums

Token

STEP/IFC token.

Functions

entity_count

Count the entities in a STEP/IFC byte buffer in O(scan) time and O(1) memory — no entity index, no per-type map.

parse_entity

Parse a complete entity line from raw IFC bytes. Example: #123=IFCWALL(‘guid’,‘owner’,$,$,‘name’,$,$,$);