Class AbstractElementAnalyzer

    • Constructor Detail

      • AbstractElementAnalyzer

        protected AbstractElementAnalyzer​(SourceReader reader)
    • Method Detail

      • read

        public abstract LexicalElement read()
                                     throws LexicalException
        Description copied from interface: LexicalElementAnalyzer
        Reads a lexeme and returns the created lexical element.

        If the characters read from the reader show that the lexeme is not the type that the class implementing this interface can handle then the characters are pushed back to he reader and null is returned.

        If the characters read from the reader show that the lexeme is the type that the class implementing this interface can handle, but is erroneous, then the method throws the exception.

        Specified by:
        read in interface LexicalElementAnalyzer
        Returns:
        the created lexeme or null
        Throws:
        LexicalException