package api;

import java.io.IOException;

/** Fixing the problem caused by mixing subclassing and delegation in 

 * the <code>java.io.BufferedWriter</code>

 *

 * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 */

public final class Writer {

    private final Impl impl;

    private Writer(Impl impl) {

        this.impl = impl;

    }

    public final void write(int c) throws IOException {

        impl.write(new CharSeq(c));

    }

    public final void write(char cbuf[]) throws IOException {

	impl.write(new CharSeq(cbuf, 0, cbuf.length));

    }

    public final void write(char cbuf[], int off, int len) throws IOException {

        impl.write(new CharSeq(cbuf, off, len));

    }

    public final void write(String str) throws IOException {

	impl.write(str);

    }

    public final void write(String str, int off, int len) throws IOException {

        impl.write(str.subSequence(off, off + len));

    }

    public static interface Impl {

        public void write(CharSequence seq) throws IOException;

    }

}