StringVar

java.lang.Object

org.parboiled.common.Reference<String>

org.parboiled.support.Var<String>

org.parboiled.support.StringVar

public class StringVar extends Var<String>

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

Constructor Summary

Constructors

Constructor

Description

StringVar()

Initializes a new StringVar with a null initial value.

StringVar(String value)

Initializes a new StringVar with the given initial value.
Method Summary

Modifier and Type

Method

Description

boolean

append(char c)

Appends the given char.

boolean

append(String text)

Appends the given string.

StringVar

appended(char c)

Appends the given char.

StringVar

appended(String text)

Appends the given string.

boolean

isEmpty()

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

Methods inherited from class Var
enterFrame, exitFrame, getLevel, getName, setName, toString

Methods inherited from class Reference
clear, get, getAndClear, getAndSet, isNotSet, isSet, set, setAndGet

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details
- StringVar
  
  public StringVar()
  
  Initializes a new StringVar with a null initial value.
- StringVar
  
  public StringVar(String value)
  
  Initializes a new StringVar with the given initial value.
  
  Parameters:
  
  value - the initial value
Method Details
- 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
- 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 StringVar 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 StringVar appended(char c)
  
  Appends the given char. If this instance is currently uninitialized the given string is used for initialization.
  
  Parameters:
  
  c - the char to append
  
  Returns:
  
  this instance