Package org.parboiled.support

Class StringBuilderVar

java.lang.Object

org.parboiled.common.Reference<T>

org.parboiled.support.Var<StringBuilder>

org.parboiled.support.StringBuilderVar

public class StringBuilderVar
extends Var<StringBuilder>

Simple specialization of a Var for StringBuilders. Provides a few convenience helper methods.

Constructor Summary

Constructors

Constructor	Description
StringBuilderVar()	Initializes a new StringVar with a null initial value.
StringBuilderVar(StringBuilder value)	Initializes a new StringBuilderVar with the given initial StringBuilder instance.

Method Summary

Modifier and Type	Method	Description
boolean	append(char c)	Appends the given char.
boolean	append(String text)	Appends the given string.
StringBuilderVar	appended(char c)	Appends the given char.
StringBuilderVar	appended(String text)	Appends the given string.
boolean	clearContents()	Clears the contents of the wrapped StringBuilder.
StringBuilderVar	contentsCleared()	Clears the contents of the wrapped StringBuilder.
char[]	getChars()
String	getString()
boolean	isEmpty()	Returns true if the wrapped string is either null or empty.

Methods inherited from class org.parboiled.support.Var

enterFrame, exitFrame, getLevel, getName, setName, toString

Methods inherited from class org.parboiled.common.Reference

clear, get, getAndClear, getAndSet, isNotSet, isSet, set, setAndGet

Methods inherited from class java.lang.Object

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

Constructor Detail

StringBuilderVar

public StringBuilderVar()

Initializes a new StringVar with a null initial value.

StringBuilderVar

public StringBuilderVar(StringBuilder value)

Initializes a new StringBuilderVar with the given initial StringBuilder instance.

Parameters:

value - the initial value

Method Detail

isEmpty

public boolean isEmpty()

Returns true if the wrapped string is either null or empty.

Returns:

true if the wrapped string is either null or empty

getString

public String getString()

Returns:

the String representation of the underlying StringBuilder.

getChars

public char[] getChars()

Returns:

the char[] representation of the underlying StringBuilder.

append

public boolean append(String text)

Appends the given string. If this instance is currently uninitialized the given string is used for initialization.

Parameters:

text - the text to append

Returns:

true

appended

public StringBuilderVar appended(String text)

Appends the given string. If this instance is currently uninitialized the given string is used for initialization.

Parameters:

text - the text to append

Returns:

this instance

append

public boolean append(char c)

Appends the given char. If this instance is currently uninitialized the given char is used for initialization.

Parameters:

c - the char to append

Returns:

true

appended

public StringBuilderVar appended(char c)

Appends the given char. If this instance is currently uninitialized the given char is used for initialization.

Parameters:

c - the char to append

Returns:

this instance

clearContents

public boolean clearContents()

Clears the contents of the wrapped StringBuilder. If the instance is currently unintialized this method does nothing.

Returns:

true

contentsCleared

public StringBuilderVar contentsCleared()

Clears the contents of the wrapped StringBuilder. If the instance is currently unintialized this method does nothing.

Returns:

this instance