monq.jfa

Interface ReParser

All Known Implementing Classes:

ReClassicParser

public interface ReParser

defines the interface needed by an Nfa to "fill" itself with a regular expression. An ReParser is always called through an Nfa. In particular direct calls to parse() are not intended.

ReParser objects type need not be instantiated directly. Use constructors and methods of Nfa to parse regular expressions into finite automata.

Method Summary

Modifier and Type	Method and Description
void	escape(java.lang.StringBuilder out, java.lang.CharSequence in, int startAt) starting with the character at startAt the given CharSequence is copied to out while all characters with special meaning for this parser are suitably escaped.
void	parse(NfaParserView nfa, java.lang.CharSequence regex) parses regex while building up the automaton in nfa.
java.lang.String	specialChars() provides all characters that have a special meaning for this parser

Method Detail

parse

void parse(NfaParserView nfa,
           java.lang.CharSequence regex)
    throws ReSyntaxException

parses regex while building up the automaton in nfa. This method is solely used by Nfa and only Nfa knows how to provide an implementation of NfaParserView. This method must be implemented by alternative implementations of ReParser but is not intended to be called directly.

Throws:

ReSyntaxException

specialChars

java.lang.String specialChars()

provides all characters that have a special meaning for this parser

escape

void escape(java.lang.StringBuilder out,
            java.lang.CharSequence in,
            int startAt)

starting with the character at startAt the given CharSequence is copied to out while all characters with special meaning for this parser are suitably escaped. The result can be used as a regular expression that matches exactly the input sequence.