Re: C++ syntax for Lua

[Dong Feng <middle.fengdong@...>]

With template, to make C++ "similar" to any language is not
impossible. There is even a parser implemented purely by template.
http://www.boost.org/doc/libs/1_52_0/libs/spirit/doc/html/index.html

Only the "similarity" is usually not pretty and the error handling is
not good. (I tested Spirit in around 2004 and it has silent failure
when dealing with left-recursive).

2012/12/14 Rapin Patrick <rapin.patrick@gmail.com>:
> Despite usual believe, it happens that Lua and C++ can have a very similar
> syntax.
> I just discovered it. Consider the following code:
>
>
>     f=print debug.setmetatable(nil, {__len=f,__lt=f,__call=f,__index=f})_=
>
>     #include <iostream>
>     #include <stdlib.h>
>
>     namespace
>     {
>         enum { TRUE, FALSE, MAYBE };
>
>         template<T>
>         class {
>         public:
>             int (aMethod)(int, void);
>             void (convertToFloat)(double[8], float[8]);
>         protected:
>             double (getValue)();
>         };
>
>         int (globalFunction) (void);
>     }
>
> Is it a valid Lua program? YES, although it outputs essentially debug
> information.
> Is it a valid C++ program ? No, but nearly !
>
>
> --
> -- Patrick Rapin
> -- coauthor of "Le guide de Lua et ses applications", D-BookeR