Mario de Sousa <msousa@fe.up.pt> [Fri, 15 Jun 2012 19:54:33 +0100] rev 596
Add ERROR_MSG macro && move extract_XXX() functions to constant_folding.cc
Mario de Sousa <msousa@fe.up.pt> [Thu, 14 Jun 2012 17:50:37 +0100] rev 595
Add independent extract_integer() function (preparing to remove extract_XXX() from absyntax_utils.cc)