org.codehaus.groovy.control.io
Class AbstractReaderSource

java.lang.Object
  org.codehaus.groovy.control.io.AbstractReaderSource

All Implemented Interfaces:

HasCleanup, ReaderSource

Direct Known Subclasses:

FileReaderSource, InputStreamReaderSource, StringReaderSource, URLReaderSource

public abstract class AbstractReaderSource
extends Object
implements ReaderSource

For ReaderSources that can choose a parent class, a base that provides common functionality.

Version:

$Id$

Author:

Chris Poirier

Field Summary

protected CompilerConfiguration

configuration

Constructor Summary

AbstractReaderSource(CompilerConfiguration configuration)

Method Summary

boolean	canReopenSource() Returns true if the source can be restarted (ie. if getReader() will return non-null on subsequent calls.
void	cleanup() Cleans up any cached resources used by getLine().
String	getLine(int lineNumber, Janitor janitor) Returns a line from the source, or null, if unavailable.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.codehaus.groovy.control.io.ReaderSource

getReader

Field Detail

configuration

protected CompilerConfiguration configuration

Constructor Detail

AbstractReaderSource

public AbstractReaderSource(CompilerConfiguration configuration)

Method Detail

canReopenSource

public boolean canReopenSource()

Returns true if the source can be restarted (ie. if getReader() will return non-null on subsequent calls.

Specified by:

canReopenSource in interface ReaderSource

Returns:

true if the resource can be reopened for reading

getLine

public String getLine(int lineNumber,
                      Janitor janitor)

Returns a line from the source, or null, if unavailable. If you supply a Janitor, resources will be cached.

Specified by:

getLine in interface ReaderSource

Parameters:

lineNumber - the number of the line of interest

janitor - helper to clean up afterwards

Returns:

the line of interest

cleanup

public void cleanup()

Cleans up any cached resources used by getLine().

Specified by:

cleanup in interface HasCleanup

Specified by:

cleanup in interface ReaderSource