gonnot/visual-formula — pull request #1 by marcona (2012-07-18 22:27:35+00:00)
Title: Add parenthesis support

Parenthesis are now supported.

Parser's algorithm has been modififed to a more compact version (BNF: Backus Normal Form): Vtoken List is now converted to postfix notation before beeing processed.

inspired from: http://java.macteki.com/2011/06/arithmetic-evaluator-bnf-tokenizer.html