org.apache.felix.gogo.runtime

Class Expression.Tokenizer

java.lang.Object

org.apache.felix.gogo.runtime.Expression.Tokenizer

All Implemented Interfaces:

java.util.Iterator<java.lang.String>

Enclosing class:

Expression

private class Expression.Tokenizer
extends java.lang.Object
implements java.util.Iterator<java.lang.String>

Expression tokenizer that allows to iterate over a String expression token by token. Blank characters will be skipped.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	input The original input expression.
private int	pos Actual position in expression string.
private java.lang.String	previousToken The previous token or null if none.

Constructor Summary

Constructors

Constructor and Description
Tokenizer(java.lang.String input) Creates a new tokenizer for an expression.

Method Summary

Modifier and Type	Method and Description
int	getPos() Get the actual character position in the string.
boolean	hasNext()
java.lang.String	next()
private char	peekNextChar() Peek at the next character, without advancing the iterator.
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

pos

private int pos

Actual position in expression string.

input

private java.lang.String input

The original input expression.

previousToken

private java.lang.String previousToken

The previous token or null if none.

Constructor Detail

Tokenizer

public Tokenizer(java.lang.String input)

Creates a new tokenizer for an expression.

Parameters:

input - The expression string.

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<java.lang.String>

peekNextChar

private char peekNextChar()

Peek at the next character, without advancing the iterator.

Returns:

The next character or character 0, if at end of string.

next

public java.lang.String next()

Specified by:

next in interface java.util.Iterator<java.lang.String>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<java.lang.String>

getPos

public int getPos()

Get the actual character position in the string.

Returns:

The actual character position.