Module parser

Expression parsing and tokenization functions

Functions

extract_line_references

Extract all line references from a text string Returns a vector of (start_pos, end_pos, line_number) tuples for each “lineN” found

is_valid_math_expression

Check if a string represents a valid mathematical expression

is_valid_mathematical_expression

Check if a sequence of tokens forms a valid mathematical expression

parse_line_reference

Parse a line reference string like “line1”, “line2” etc.

tokenize_with_units

Tokenize any text into tokens - always succeeds, may include non-mathematical tokens

update_line_references_in_text

Update line references in text by applying an offset to references >= threshold If offset is positive: increment references >= threshold If offset is negative: decrement references > threshold, mark deleted line refs as invalid