Re: [Vala] How to assign to construct-only property?

[Hodong Kim <cogniti gmail com>]

InflateGZip inherits from Gsf.InputGZip, but an error occurred.

gsf-decompress.vala:6.9-6.20: error: chain up to `Gsf.InputGZip.new' not
supported

if uncomment Object(raw: true),

gsf-decompress.vala:6.9-6.20: error: Multiple constructor calls in the same
constructor are not permitted

Is there no way to set construct-only property in Vala ?

class InflateGZip : Gsf.InputGZip
{
    public InflateGZip(Gsf.Input source)
    {
        //Object(raw: true);
        base(source);
    }
}

void main (string[] args)
{
    ...
    var stream = new InflateGZip (input);
}




2012/11/21 Hodong Kim <cogniti gmail com>

> Hello,
>
> I want to set "raw" property in Gsf.InputGZip.
> Should I inherit Gsf.InputGZip ?
>
> --------
>
> void main (string[] args)
> {
>     Gsf.InfileMSOle olefile;
>
>     string filename = args[1];
>
>     try   {
>         var file = new Gsf.InputStdio (filename);
>         olefile  = new Gsf.InfileMSOle (file);
>     }
>     catch {
>         stderr.printf ("%s is not a OLE file\n", filename);
>         return;
>     }
>
>     var input = olefile.child_by_name("DocInfo");
>
>     // HERE, How to assign to construct-only property?
>     var stream = new Gsf.InputGZip(input);
> }
>
> --------
>
>
> Reference:
>
> http://www.valadoc.org/#!api=libgsf-1/Gsf.InputGZip
>     public bool raw { construct set; get; }
>
> http://projects.gnome.org/libgsf/gsf-Compression.html#gsf-input-gzip-new
>     "raw"    gboolean    : Read / Write / Construct Only
>     Whether to read compressed data with no header and no trailer.
>     Default value: FALSE