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
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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
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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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