class STRING_SEARCHER General cluster: base description: "Helper to perform efficient search of a string in another one. Note: The algorithm used is the one described in Communications of the ACM, volume 33, number 8, August 1990, by Daniel M. Sunday. The fuzzy version was presented by Peter R. Sibbald in Communications of the ACM, volume 35, number 4, April 1992 (Technical Correspondance)." create: make Ancestors ANY Queries fuzzy_index (a_string, a_pattern: STRING_GENERAL; start_pos, end_pos, fuzzy: INTEGER_32): INTEGER_32 Max_ascii_character_value: INTEGER_32 substring_index (a_string, a_pattern: STRING_GENERAL; start_pos, end_pos: INTEGER_32): INTEGER_32 substring_index_with_deltas (a_string, a_pattern: STRING_GENERAL; start_pos, end_pos: INTEGER_32): INTEGER_32 Commands initialize_deltas (a_pattern: STRING_GENERAL) Constraints deltas not void deltas valid