Re: Lua AST and Parsing a "C" Like language

[Michal Kottman <k0mpjut0r@...>]

On Tue, 2011-08-23 at 00:07 +0200, Axel Kittenberger wrote:
> This _is_ valid lua code, suppsing "WIDGET", "TILE", "TYPE",
> "ELEMENTS" etc have been declared as functions:
> 
> WIDGET mywidget
> {
>     TITLE "My widget";
>     TYPE WIDGET_TYPE;
>     ELEMENTS
>     {
>         element1,
>         element2,
>         element3
>     }
> }

You need to change it to following (translation with fewest changes) to
be valid Lua code (the definition of necessary functions and their
semantics is up to you):

WIDGET "myWidget"
{
    TITLE "My widget";
    TYPE(WIDGET_TYPE);
    ELEMENTS
    {
        element1, element2, element3
    }
}

But I think the following is more "Lua-zen":

myWidget = WIDGET {
    TITLE = "MyWidget",
    TYPE = WIDGET_TYPE,
    ELEMENTS = { element1, element2, element3 }
}

Also:

> IMPORT  WIDGET mywidget
> {
>     REFINE widget_name{
>         REDEFINE TITLE "Your widget";
>     }
> }

This is not valid Lua code...

> if YOUR_WIDGET_ALLOWED then
> ...
> endif

Lua has only 'end', therefore:

if YOUR_WIDGET_ALLOWED then ... end


Just my 2c.