Package 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.AutoCloseable
,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.
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Field Summary
Fields inherited from class java.io.FilterReader
in
Fields inherited from class java.io.Reader
lock
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Constructor Summary
Constructors Constructor Description StripJavaComments()
Constructor for "dummy" instances.StripJavaComments(java.io.Reader in)
Creates a new filtered reader. -
Method Summary
Methods inherited from class org.apache.tools.ant.filters.BaseFilterReader
getInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skip
Methods inherited from class java.io.FilterReader
close, mark, markSupported, ready, reset
Methods inherited from class java.io.Reader
nullReader, read, read, transferTo
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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StripJavaComments
public StripJavaComments()Constructor for "dummy" instances.- See Also:
BaseFilterReader()
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StripJavaComments
public StripJavaComments(java.io.Reader in)Creates a new filtered reader.- Parameters:
in
- A Reader object providing the underlying stream. Must not benull
.
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Method Details
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read
public int read() throws java.io.IOExceptionReturns the next character in the filtered stream, not including Java comments.- Overrides:
read
in classjava.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
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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 interfaceChainableReader
- Parameters:
rdr
- A Reader object providing the underlying stream. Must not benull
.- Returns:
- a new filter based on this configuration, but filtering the specified reader
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