ASF+SDF parsing tools applied to ELAN
Mark van den Brand, Christophe Ringeissen · Electronic Notes in Theoretical Computer Science · 2000
This paper describes the development a new ELAN parser using ASF+SDF parsing technology. Asf+Sdf and ELAN are two modern rule-based systems. Both systems have their own features and application domains, however, both formalisms have user-defined syntax for defining rewrite rules. The Asf+Sdf Meta-Environment uses powerful and efficient generic parsing tools, whereas the ELAN parser is based on an Earley parser. Furthermore, the ELAN syntax is “hard-wired” in the parser, which makes adaptations of the syntax cumbersome. The use of Asf+Sdf parsing technology makes the ELAN syntax more open and adaptable, however, some features of the ELAN syntax makes the development of a parser a challenging problem.