Package com.ibm.icu.impl
Class UCharacterIteratorWrapper
- java.lang.Object
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- com.ibm.icu.impl.UCharacterIteratorWrapper
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- All Implemented Interfaces:
java.lang.Cloneable
,java.text.CharacterIterator
public class UCharacterIteratorWrapper extends java.lang.Object implements java.text.CharacterIterator
This class is a wrapper around UCharacterIterator and implements the CharacterIterator protocol
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Field Summary
Fields Modifier and Type Field Description private UCharacterIterator
iterator
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Constructor Summary
Constructors Constructor Description UCharacterIteratorWrapper(UCharacterIterator iter)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
clone()
Create a copy of this iteratorchar
current()
Gets the character at the current position (as returned by getIndex()).char
first()
Sets the position to getBeginIndex() and returns the character at that position.int
getBeginIndex()
Returns the start index of the text.int
getEndIndex()
Returns the end index of the text.int
getIndex()
Returns the current index.char
last()
Sets the position to getEndIndex()-1 (getEndIndex() if the text is empty) and returns the character at that position.char
next()
Increments the iterator's index by one and returns the character at the new index.char
previous()
Decrements the iterator's index by one and returns the character at the new index.char
setIndex(int position)
Sets the position to the specified position in the text and returns that character.
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Field Detail
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iterator
private UCharacterIterator iterator
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Constructor Detail
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UCharacterIteratorWrapper
public UCharacterIteratorWrapper(UCharacterIterator iter)
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Method Detail
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first
public char first()
Sets the position to getBeginIndex() and returns the character at that position.- Specified by:
first
in interfacejava.text.CharacterIterator
- Returns:
- the first character in the text, or DONE if the text is empty
- See Also:
getBeginIndex()
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last
public char last()
Sets the position to getEndIndex()-1 (getEndIndex() if the text is empty) and returns the character at that position.- Specified by:
last
in interfacejava.text.CharacterIterator
- Returns:
- the last character in the text, or DONE if the text is empty
- See Also:
getEndIndex()
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current
public char current()
Gets the character at the current position (as returned by getIndex()).- Specified by:
current
in interfacejava.text.CharacterIterator
- Returns:
- the character at the current position or DONE if the current position is off the end of the text.
- See Also:
getIndex()
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next
public char next()
Increments the iterator's index by one and returns the character at the new index. If the resulting index is greater or equal to getEndIndex(), the current index is reset to getEndIndex() and a value of DONE is returned.- Specified by:
next
in interfacejava.text.CharacterIterator
- Returns:
- the character at the new position or DONE if the new position is off the end of the text range.
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previous
public char previous()
Decrements the iterator's index by one and returns the character at the new index. If the current index is getBeginIndex(), the index remains at getBeginIndex() and a value of DONE is returned.- Specified by:
previous
in interfacejava.text.CharacterIterator
- Returns:
- the character at the new position or DONE if the current position is equal to getBeginIndex().
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setIndex
public char setIndex(int position)
Sets the position to the specified position in the text and returns that character.- Specified by:
setIndex
in interfacejava.text.CharacterIterator
- Parameters:
position
- the position within the text. Valid values range from getBeginIndex() to getEndIndex(). An IllegalArgumentException is thrown if an invalid value is supplied.- Returns:
- the character at the specified position or DONE if the specified position is equal to getEndIndex()
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getBeginIndex
public int getBeginIndex()
Returns the start index of the text.- Specified by:
getBeginIndex
in interfacejava.text.CharacterIterator
- Returns:
- the index at which the text begins.
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getEndIndex
public int getEndIndex()
Returns the end index of the text. This index is the index of the first character following the end of the text.- Specified by:
getEndIndex
in interfacejava.text.CharacterIterator
- Returns:
- the index after the last character in the text
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getIndex
public int getIndex()
Returns the current index.- Specified by:
getIndex
in interfacejava.text.CharacterIterator
- Returns:
- the current index.
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clone
public java.lang.Object clone()
Create a copy of this iterator- Specified by:
clone
in interfacejava.text.CharacterIterator
- Overrides:
clone
in classjava.lang.Object
- Returns:
- A copy of this
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