Re: DSL in lua

[Vasiliy Tolstov <v.tolstov@...>]

0) ok, ";" sign is not very big problem
1-2) can you provide me simple exmple, please.
3) owner, group, etc are functions that take strings is not preferred,
i thing more usable to set table keys...

2012/12/6 steve donovan <steve.j.donovan@gmail.com>:
> On Thu, Dec 6, 2012 at 7:52 AM, Vasiliy Tolstov <v.tolstov@selfip.ru> wrote:
>> directory "/etc/" {
>>   owner "root";
>>   group "wheel";
>>   mode "0755";
>>   action "create";
>> }
>
> Here is how to make this valid Lua:
>
> 0) use semicolons or commas as delimiters (my edit!)
> 1) directory is a function that takes a path string and returns a function
> 2) which takes a table argument
> 3) owner, group, etc are functions that take strings.
>
> (Because of Lua call syntax sugar, we can leave out parens when there
> is a single argument which is a string literal or a table constructor)
>
> Alternative to 3), set table keys (since presumably order is not
> important here?)
>
> directory "/etc/" {
>   owner="root";
>   group="wheel";
>   mode="0755";
>   action="create";
>  }
>
> If you don't want delimiters, the code can be converted into valid Lua
> by a suitable string transformation, e.g a simple-minded replacement
> of strings at end-of-line with the string plus semi-colon.
>
> When executing such configuration Lua, run it in your own environment
> that will contain the directory, etc functions and have no references
> to dangerous global functions
>
> steve d.
>



-- 
Vasiliy Tolstov,
Clodo.ru
e-mail: v.tolstov@selfip.ru
jabber: vase@selfip.ru