question: @ Override public int read ( final char [ ] buffer , final int off , final int len ) throws IOException { if ( throwable instanceof IOException ) { throw ( IOException ) throwable ; } else if ( throwable != null ) { throw new IOException ( "" , throwable ) ; } return reader . read ( buffer , off , len ) ; }
target:  Reads parsed text from the pipe connected to the parsing thread. Fails if the parsing thread has thrown an exception.