org.apache.lucene.queryParser.precedence

Class FastCharStream

java.lang.Object
- org.apache.lucene.queryParser.precedence.FastCharStream

Implemented Interfaces:: CharStream

public final class FastCharStream

extends Object

implements CharStream

An efficient implementation of JavaCC's CharStream interface.

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 Summary
`FastCharStream(Reader r)` Constructs from a Reader.

Method Summary
`char`	`BeginToken()`
`void`	`Done()`
`String`	`GetImage()`
`char[]`	`GetSuffix(int len)`
`void`	`backup(int amount)`
`int`	`getBeginColumn()`
`int`	`getBeginLine()`
`int`	`getColumn()`
`int`	`getEndColumn()`
`int`	`getEndLine()`
`int`	`getLine()`
`char`	`readChar()`

FastCharStream

public FastCharStream(Reader r)

Constructs from a Reader.

BeginToken

public final char BeginToken()
            throws IOException

Specified by:
BeginToken in interface CharStream

Done

public final void Done()

Specified by:
Done in interface CharStream

GetImage

public final String GetImage()

Specified by:
GetImage in interface CharStream

GetSuffix

public final char[] GetSuffix(int len)

Specified by:
GetSuffix in interface CharStream

backup

public final void backup(int amount)

Specified by:
backup in interface CharStream

getBeginColumn

public final int getBeginColumn()

Specified by:
getBeginColumn in interface CharStream

getBeginLine

public final int getBeginLine()

Specified by:
getBeginLine in interface CharStream

getColumn

public final int getColumn()

Specified by:
getColumn in interface CharStream

getEndColumn

public final int getEndColumn()

Specified by:
getEndColumn in interface CharStream

getEndLine

public final int getEndLine()

Specified by:
getEndLine in interface CharStream

getLine

public final int getLine()

Specified by:
getLine in interface CharStream

readChar

public final char readChar()
            throws IOException

Specified by:
readChar in interface CharStream

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