org.apache.tools.ant.filters
Class StripJavaComments
java.lang.Object
java.io.Reader
java.io.FilterReader
org.apache.tools.ant.filters.BaseFilterReader
org.apache.tools.ant.filters.StripJavaComments
- All Implemented Interfaces:
- java.io.Closeable, java.lang.Readable, ChainableReader
public final class StripJavaComments
- extends BaseFilterReader
- implements ChainableReader
This is a Java comment and string stripper reader that filters
those lexical tokens out for purposes of simple Java parsing.
(if you have more complex Java parsing needs, use a real lexer).
Since this class heavily relies on the single char read function,
you are recommended to make it work on top of a buffered reader.
Fields inherited from class java.io.FilterReader |
in |
Fields inherited from class java.io.Reader |
lock |
Method Summary |
java.io.Reader |
chain(java.io.Reader rdr)
Creates a new StripJavaComments using the passed in
Reader for instantiation. |
int |
read()
Returns the next character in the filtered stream, not including
Java comments. |
Methods inherited from class java.io.FilterReader |
close, mark, markSupported, ready, reset |
Methods inherited from class java.io.Reader |
read, read |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
StripJavaComments
public StripJavaComments()
- Constructor for "dummy" instances.
- See Also:
BaseFilterReader.BaseFilterReader()
StripJavaComments
public StripJavaComments(java.io.Reader in)
- Creates a new filtered reader.
- Parameters:
in
- A Reader object providing the underlying stream.
Must not be null
.
read
public int read()
throws java.io.IOException
- Returns the next character in the filtered stream, not including
Java comments.
- Overrides:
read
in class java.io.FilterReader
- Returns:
- the next character in the resulting stream, or -1
if the end of the resulting stream has been reached
- Throws:
java.io.IOException
- if the underlying stream throws an IOException
during reading
chain
public java.io.Reader chain(java.io.Reader rdr)
- Creates a new StripJavaComments using the passed in
Reader for instantiation.
- Specified by:
chain
in interface ChainableReader
- Parameters:
rdr
- A Reader object providing the underlying stream.
Must not be null
.
- Returns:
- a new filter based on this configuration, but filtering
the specified reader