package ocamlregextkit

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Representation of Regular Expressions and implementation of standard operations

exception Syntax_error of string

Syntax_error is raised when the parser encounters a parsing error. It should include the problem character

val simplify : Tree.re -> Tree.re

simplify r attempts to simplify RE r by Kozen Axioms

val print : Tree.re -> unit

print r prints a string representation of r

val export_graphviz : Tree.re -> string

export_graphviz r

returns
a representation of the Abstract Syntax Tree representing r in the DOT language for Graphviz

val get_alphabet : Tree.re -> string list

get_alphabet r

val is_nullable : Tree.re -> bool

is_nullable r

val derivative : Tree.re -> string -> Tree.re

derivative r a

val parse : string -> Tree.re

parse s Invokes the parser on string s to create a Regular Expression Abstract Syntax Tree