public final class FastCharStream extends java.lang.Object implements CharStream
Note that
this does not do line-number counting, but instead keeps track of the
character position of the token in the input, as required by Lucene's Token API.
| Constructor and Description |
|---|
FastCharStream(java.io.Reader r)
Constructs from a Reader.
|
| Modifier and Type | Method and Description |
|---|---|
void |
backup(int amount)
Backs up the input stream by amount steps.
|
char |
BeginToken()
Returns the next character that marks the beginning of the next token.
|
void |
Done()
The lexer calls this function to indicate that it is done with the stream
and hence implementations can free any resources held by this class.
|
int |
getBeginColumn()
Returns the column number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getBeginLine()
Returns the line number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getColumn()
Returns the column position of the character last read.
|
int |
getEndColumn()
Returns the column number of the last character for current token (being
matched after the last call to BeginTOken).
|
int |
getEndLine()
Returns the line number of the last character for current token (being
matched after the last call to BeginTOken).
|
java.lang.String |
GetImage()
Returns a string made up of characters from the marked token beginning
to the current buffer position.
|
int |
getLine()
Returns the line number of the character last read.
|
char[] |
GetSuffix(int len)
Returns an array of characters that make up the suffix of length 'len' for
the currently matched token.
|
char |
readChar()
Returns the next character from the selected input.
|
public final char readChar()
throws java.io.IOException
CharStreamreadChar in interface CharStreamjava.io.IOExceptionpublic final char BeginToken()
throws java.io.IOException
CharStreamBeginToken in interface CharStreamjava.io.IOExceptionpublic final void backup(int amount)
CharStreambackup in interface CharStreampublic final java.lang.String GetImage()
CharStreamGetImage in interface CharStreampublic final char[] GetSuffix(int len)
CharStreamGetSuffix in interface CharStreampublic final void Done()
CharStreamDone in interface CharStreampublic final int getColumn()
CharStreamgetColumn in interface CharStreamCharStream.getEndColumn()public final int getLine()
CharStreamgetLine in interface CharStreamCharStream.getEndLine()public final int getEndColumn()
CharStreamgetEndColumn in interface CharStreampublic final int getEndLine()
CharStreamgetEndLine in interface CharStreampublic final int getBeginColumn()
CharStreamgetBeginColumn in interface CharStreampublic final int getBeginLine()
CharStreamgetBeginLine in interface CharStreamCopyright © 2000-2010 Ministere de la culture et de la communication / AJLSM. All Rights Reserved.