Module position 

Byte-offset ↔ LSP position conversion.

Bynk source spans are byte offsets into the UTF-8 source. LSP positions use UTF-16 code units (per the protocol’s default position encoding). For ASCII-only Bynk sources the two agree, but we go through code points to handle multi-byte characters correctly in identifiers and strings.

Structs

PositionMap

A source snapshot paired with its precomputed LineIndex, so a request that maps many spans (semantic tokens, folding ranges, diagnostics, inlay hints, document symbols) pays the O(n) line-scan once and then converts each offset in O(log n) — closing the O(n²) blow-up of #732.

Functions

end_position

The position one past the end of the source — used for “replace whole document” formatting edits.

offset_to_position

Convert a byte offset into the source string into an LSP position.

position_to_offset

Convert an LSP position into a byte offset. Returns None if the position is past the end of the source.

span_to_range

Convert a compiler Span into an LSP [Range].