[PATCH] Allow constant expressions

Hi, The attached patch allows constant expressions within class variables and constants. I came into this problem when I wanted the following sequence: class foo { const A = 1<<0; const B = 1<<1; const C = 1<<2; } And the current parser doesn't allow such rules. I therefore added the attached patch which allows operators to be used on constants within these expressions (and also within array declarations). This is achieved by folding statements such as '1<<0' into their equivalent values at compile time. The following operators are supported: << >> | & + - * / . % ^ ~ xor Please review it, and let me know if its ok to commit. :) -Sterling -- "People can have the Model T in any colour -- so long as it's black." - Henry Ford

Attachment: [text/x-patch] const_fold.diff