On Sun, 2007-07-15 at 03:36 +1000, skaller wrote:
> I have added a new feature to the Felix parser to make this work:
And now this works:
///////////////////////////////////////////////
open syntax cstuff;
fun f(int x, long *y, z:int):int = {
return x + int(*y) + z;
}
var x = 5L;
println$ f (3,&x,5);
//////////////////////////////////////////////////
In case you didn't spot it: function parameters can
be written in either C or ML style!
Here's the syntax extension that makes this work:
//////////////////////////////////////////////////////
syntax cstuff {
base_type :=
| "char" =># '`(ast_name "char" ())'
| "tiny" =># '`(ast_name "tiny" ())'
| "short" =># '`(ast_name "short" ())'
| "int" =># '`(ast_name "int" ())'
| "long" =># '`(ast_name "long" ())'
| "vlong" =># '`(ast_name "vlong" ())'
| "utiny" =># '`(ast_name "utiny" ())'
| "uchar" =># '`(ast_name "utiny" ())'
| "ushort" =># '`(ast_name "ushort" ())'
| "uint" =># '`(ast_name "uint" ())'
| "ulong" =># '`(ast_name "ulong" ())'
| "uvlong" =># '`(ast_name "uvlong" ())'
| struct sname =># "`(ast_name ,_2 ())"
| union sname =># "`(ast_name ,_2 ())"
| class sname =># "`(ast_name ,_2 ())"
| enum sname =># "`(ast_name ,_2 ())"
;
pointer_type:=
| base_type
| pointer_type star =># "`(ast_ref ,_1)"
;
sparameter := pointer_type sname =># "`(PVar ,_2 ,_1)";
}
/////////////////////////////////////////////////
Obviously, incomplete, but notice how with the new Scheme
based system we can extend 'sparameter' -- which is not
an expression or statement.
--
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net
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