[Webmacro-devel] WTF is this WM code doing?

[Marc P. <ma...@an...>]

Oh, just glancing through the WM source trying to find what looks like a 
new bug in the current source (dumping out template name "randomly" in 
stream) and I see this in Block.java and I am wondering "what the f*** is 
this?". Anybody care to explain what this is all about?

    final public void write (final FastWriter out, final Context context)
            throws PropertyException, IOException
    {
        final byte[][] bcontent = out.getEncoder().encode(_block);
        byte[] b;
        Context.TemplateEvaluationContext teC = 
context.getTemplateEvaluationContext();
        String oldName = teC._templateName;

        teC._templateName = _name;
        int i = 0;
        switch (_remainder)
        {
            case 1:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 2:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 3:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 4:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 5:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 6:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 7:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 8:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
            case 9:
                b = bcontent[i];
                out.write(b, 0, b.length);
                teC._lineNo = this.getLineNo(i);
                teC._columnNo = this.getColNo(i);
                _macros[i++].write(out, context);
        }

...it goes on with some similar stuff.

Why is this required? At best this looks like some really bad optimisation!

-- 
Marc Palmer
Contract Java Consultant/Developer

* Available For Hire *

See my CV at  http://www.anyware.co.uk/marc/