Tool to allow embedded C in Lua

[Tim Maxwell <timmaxw@...>]

Hi,

I've been working on a toy tool to allow C code to be embedded inline  
in Lua. So you can write code like this:

:	-- example.clua
:	x=1
:	y=2
:	
:	cfunction add
:	{
:		float a = luaL_checknumber(L, 1);
:		float b = luaL_checknumber(L, 2);
:		lua_pushnumber(L, a+b);
:		return 1;
:	} end
:	
:	print(add(x,y))

To run this example, you would run this code through the attached  
tool 'clua':

$ clua example.clua example

and it would produce two output files: "example.out.lua" and  
"libexample.out.c". Then you would compile "libexample.out.c" into a  
shared library called "libexample.so" and run "example.out.lua" using  
a normal Lua interpreter.

I'm not sure what this is good for. The current version doesn't allow  
any header files other than <lua.h> and <lauxlib.h>, so at present  
it's useless for interfacing with C libraries. However, that would be  
an easy feature to add if anybody is interested in this tool.

Tim Maxwell

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