xyz.hexav.aje.expressions

Class TokenizingUnit

java.lang.Object

xyz.hexav.aje.expressions.TokenizingUnit

Direct Known Subclasses:

ExpressionCompiler

public abstract class TokenizingUnit
extends java.lang.Object

Provides useful methods to tokenize and to iterate through a String.

Field Summary

Fields

Modifier and Type	Field and Description
protected char	current
protected java.lang.String	line
protected int	pos

Constructor Summary

Constructors

Constructor and Description
TokenizingUnit()

Method Summary

Modifier and Type	Method and Description
protected boolean	consume(char prompt) Consume and return true if the next meaningful character is the prompt.
protected boolean	consume(char prompt, boolean strict)
protected boolean	consume(java.lang.String prompt) Return true if the next characters in prompt.length() range is equal to prompt.
protected java.lang.String	currentInfo()
protected char	nextChar() Get the next character and increase the position variable.
protected boolean	nextIs(char prompt) consume(prompt) without consuming the character.
protected boolean	nextIs(java.lang.String prompt)
protected void	resetPosition() Resets the position of the compiling unit.
protected void	setLine(java.lang.String line) Set target compiling line.
protected void	skipWS() Skip whitespaces.

Methods inherited from class java.lang.Object

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

Field Detail

pos

protected int pos

current

protected char current

line

protected java.lang.String line

Constructor Detail

TokenizingUnit

public TokenizingUnit()

Method Detail

setLine

protected void setLine(java.lang.String line)

Set target compiling line.

nextChar

protected char nextChar()

Get the next character and increase the position variable.

consume

protected boolean consume(char prompt)

Consume and return true if the next meaningful character is the prompt.

consume

protected boolean consume(char prompt,
                          boolean strict)

Parameters:

prompt - Character prompt.

strict - If should skip whitespaces.

Returns:

If the next character (skip whitespaces if not strict) is the prompt.

consume

protected boolean consume(java.lang.String prompt)

Return true if the next characters in prompt.length() range is equal to prompt.

nextIs

protected boolean nextIs(java.lang.String prompt)

resetPosition

protected void resetPosition()

Resets the position of the compiling unit.

skipWS

protected void skipWS()

Skip whitespaces.

nextIs

protected boolean nextIs(char prompt)

consume(prompt) without consuming the character.

currentInfo

protected java.lang.String currentInfo()