net.sourceforge.pmd.lang.cpp
Class ContinuationReader

java.lang.Object
  java.io.Reader
      net.sourceforge.pmd.lang.cpp.ContinuationReader

All Implemented Interfaces:

Closeable, Readable

public class ContinuationReader
extends Reader

A custom Reader which completely omits C/C++ continuation character sequences from an underlying reader. Specifically the sequences \ \n (backslash, carriage return), or \ \r \n (backslash, line feed, carriage return).

This reader exists because to modify a JavaCC lexer to understand arbitrary continuations inside of any token is cumbersome, and just removing them from the input entirely is easier to implement. See this discussion on the JavaCC mailing list on line continuation character.

Field Summary

protected PushbackReader

in the original stream is wrapped in this pushback reader.

Fields inherited from class java.io.Reader

lock

Constructor Summary

ContinuationReader(Reader in)
Creates a new ContinuationReader which filters the given reader.

Method Summary

void	close()
int	read(char[] cbuf, int off, int len)

Methods inherited from class java.io.Reader

mark, markSupported, read, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

in

protected final PushbackReader in

the original stream is wrapped in this pushback reader.

Constructor Detail

ContinuationReader

public ContinuationReader(Reader in)

Creates a new ContinuationReader which filters the given reader.

Parameters:

in - the given reader

Method Detail

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException