040000 tree 82841c908062215945eab93089bf30ffd5c8150d	ast
040000 tree 9c726e81518b6036f4c9a264ff6ac3b4e361d6d6	doc
040000 tree 7c8d9aaca7d96f21fef5d4ecf3372e0c0ae0d33d	parser
040000 tree af6d990af5184f9804edefba33d727bb24e440dd	printer
040000 tree 8d8ed3a6cf01c43d1f181f4808674ae24ce03f7c	scanner
040000 tree d7f16c6727dc97963f162412ab51895123acf131	token
040000 tree 3be7d813ad5149ab28c383a572a1886e10617d9f	typechecker