Re: Lua AST and Parsing a "C" Like language
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- Subject: Re: Lua AST and Parsing a "C" Like language
- From: Gopalakrishnan Subramani <gopalakrishnan.subramani@...>
- Date: 2011年8月22日 11:32:52 -0600
I included the how the DD would look like
Basic DD capablities
#include "constant.hdd"
#define MY_DEF 1
#define WIDGET_TYPE 1
WIDGET mywidget
{
TITLE "My widget";
TYPE WIDGET_TYPE;
ELEMENTS
{
element1,
element2,
element3
}
}
IMPORT WIDGET mywidget
{
REFINE widget_name{
REDEFINE TITLE "Your widget";
}
}
#ifdef YOUR_WIDGET_ALLOWED
WIDGET yourwidget
{
TITLE "Your widget";
TYPE WIDGET_TYPE;
ELEMENTS
{
element1,
element2,
element3
}
}
#endif
For Loop but needs pre-declaration of loop variable
int x;
for ( x=0; x < 8; x++)
{
if ( something_true )
do_this(argument1, argument2);
}
supports
do
{
statements;
}while(condition);
supports
while(condition)
{
statements;
}
switch statement supported
The idea is to run everything on Lua with differnt platforms like iOS/Android/Windows application. We will write appropriate engines that power UI based on different platform but the actual controls used shall be wrapped.
--
Gopal
On Mon, Aug 22, 2011 at 7:28 AM, Should Pain
<pengzhicheng1986@gmail.com> wrote:
于 2011年8月22日 12:58, Gopalakrishnan Subramani 写道:
I want to learn the Language parsing in Lua. The idea is to parse a language called DDL (Device Description Language) and generate the Lua code out of it.
Where I can start with if I don't know how the languages and semantics works? Are any Lua library supports easy language parsing?
The .NET version (http://irony.codeplex.com/) is huge and it is difficult to understand. I believe, Lua could support simple parsing and AST building and code generation easily.
--
Gopal
I have learned a lot from meta-lua, both the code and the manual.
You may see to it.
Goodlucky.