Module shared

Expand description

Shared parser span conversion helpers.

Functions§

opt_span: Returns None (skipping O(n) string scans) when position tracking is disabled, or Some(span) with real line/column data when enabled.
opt_span_range: Like opt_span but takes a start/end range using exclusive end semantics.
opt_span_range_inclusive: Like opt_span but takes a start/end range using inclusive end semantics.
to_parser_span: Convert grammar span (LocatedSpan) to parser span (line/column)
to_parser_span_range: Convert grammar span range (start, end) to parser span Convert a grammar span range where end is the remainder span (i.e. the nom rest after a match). This sets the end position to the end.location_offset() (start of the remainder), matching inline parser usage patterns like to_parser_span_range(start, rest).
to_parser_span_range_inclusive: Convert a grammar span range where end is the final fragment of the matched range (i.e. inclusive). This preserves the previous block-level semantics where callers pass the last fragment and expect the end to be at end.location_offset() + end.fragment().len().