040000 tree 82841c908062215945eab93089bf30ffd5c8150d	ast
040000 tree 9c726e81518b6036f4c9a264ff6ac3b4e361d6d6	doc
040000 tree 0b1ce76183fd42ce00da39e59e7299392bcd30d7	parser
040000 tree 74713a742e669c1e0002cdbf9a1d3ad782c7860f	printer
040000 tree 488f92e8a7d13332b72a2d0694660b36744438cb	scanner
040000 tree d7f16c6727dc97963f162412ab51895123acf131	token
040000 tree 3be7d813ad5149ab28c383a572a1886e10617d9f	typechecker