9e77768c91
Add tests for incorrect literals, e.g. "+ 5". Added a temporary token kTIGHTADD that represents an ADD not terminated by a whitespace. It is temporary and eliminated in the parser (code generator ot AST do not see it). It is used to recognize correct literals. Review URL: https://chromiumcodereview.appspot.com//9264051 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3745 260f80e4-7a28-3924-810f-c04153c831b5