mycompiler.myparser

Class Scanner

java.lang.Object

mycompiler.myparser.JavaLexer

mycompiler.myparser.Scanner

All Implemented Interfaces:

JavaParser.yyInput

public class Scanner
extends JavaLexer
implements JavaParser.yyInput

Constructor Summary

Constructors

Constructor and Description
Scanner(java.io.Reader reader)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	advance() move on to next token.
int	token() classifies current token.
java.lang.Object	value() associated with current token.

Methods inherited from class mycompiler.myparser.JavaLexer

yylex

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Scanner

public Scanner(java.io.Reader reader)

Method Detail

token

public int token()

Description copied from interface: JavaParser.yyInput

classifies current token. Should not be called if advance() returned false.

Specified by:

token in interface JavaParser.yyInput

Returns:

current %token or single character.

advance

public boolean advance()
                throws java.io.IOException

Description copied from interface: JavaParser.yyInput

move on to next token.

Specified by:

advance in interface JavaParser.yyInput

Returns:

false if positioned beyond tokens.

Throws:

IOException - on input error.

value

public java.lang.Object value()

Description copied from interface: JavaParser.yyInput

associated with current token. Should not be called if advance() returned false.

Specified by:

value in interface JavaParser.yyInput

Returns:

value for token().