com.enterprisemath.utils

Class StringParser

java.lang.Object

com.enterprisemath.utils.StringParser

public class StringParser
extends Object

Utility class which allows to parse strings. Instance is created on the fly and methods for parsing are exposed.

Author:

radek.hecl

Constructor Summary

Constructors

Constructor and Description
StringParser(String input) Creates new instance.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Returns true if next character is available to read.
String	lookupCharacter() Looks up character without moving the cursor.
String	lookupCharacter(String defaultEnd) Looks up character without moving the cursor.
String	readCharacter() Reads one character.
String	readCharacter(String defaultEnd) Reads one character.
String	readTillStop(String stopCharacters) Reads until one of the stop character or end of the string is reached.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StringParser

public StringParser(String input)

Creates new instance.

Parameters:

input - input string which will be parsed

Method Detail

hasNext

public boolean hasNext()

Returns true if next character is available to read. False if end of input string has been reached.

Returns:

true if there is next character, false otherwise

readCharacter

public String readCharacter()

Reads one character. Cursor is moved by one character.

Returns:

character

Throws:

IndexOutOfBoundsException - if there is no next character

readCharacter

public String readCharacter(String defaultEnd)

Reads one character. Cursor is moved by one character.

Parameters:

defaultEnd - string which is returned if cursor is at the end

Returns:

character or default end string

lookupCharacter

public String lookupCharacter()

Looks up character without moving the cursor.

Returns:

character

Throws:

IndexOutOfBoundsException - if there is no next character

lookupCharacter

public String lookupCharacter(String defaultEnd)

Looks up character without moving the cursor.

Parameters:

defaultEnd - string which is returned if cursor is at the end

Returns:

character or default end string

readTillStop

public String readTillStop(String stopCharacters)

Reads until one of the stop character or end of the string is reached. Cursor is moved by the length of the result string. Next character will be the one which caused stop.

Parameters:

stopCharacters - set of stop characters

Returns:

sequence before the stop character

toString

public String toString()

Overrides:

toString in class Object