OpenEuphoria

Thoughts on eval()

• Posted by Matt Lewis <matthewwalkerlewis at yahoo.com> Dec 14, 2004
• 725 views

I've been thinking a bit about this, and I think I see a way, although
there are a few implementation details that will have to be worked out.

I think that I'd add a new keyword, "eval", which would be a function 
taking a sequence, which is just plain text source code.  I can probably
'inject' this into the scanner/parser stream, and then put it into its
own special SubProgram to be executed.  It would probably be like having 
a separate TopLevel SubProgram, where you could do whatever, including 
defining new routines (which could be called from subsequent calls to
eval).

The function would return 1 if no [compile-time] errors happened, or 0 
if errors did happen (like perl)--run-time errors would be handled 
normally.

Obviously, use of eval() would break the preprocessor.

Matt Lewis