Efficiently building a parse tree from a regular expression

  title={Efficiently building a parse tree from a regular expression},
  author={Danny Dub{\'e} and Marc Feeley},
  journal={Acta Informatica},
We show in this paper that parsing with regular expressions instead of context-free grammars, when it is possible, is desirable. We present efficient algorithms for performing different tasks that concern parsing: producing the external representation and the internal representation of parse trees; producing all possible parse trees or a single one. Each of our algorithms to produce a parse tree from an input string has an optimal time complexity, linear with the length of the string. Moreover… CONTINUE READING
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