mozilla/rust — pull request #5559 by jbclements (2013-03-26 19:21:04+00:00)
Title: Change to token-tree-based parsing

Changes the parser to parse all streams into token-trees before hitting the parser proper, in preparation for hygiene. As an added bonus, it appears to speed up the parser (albeit by a totally imperceptible 1%).

Also, many comments in the parser.
Also, field renaming in token-trees (readme->forest, cur->stack).