charlesetc / abstract Goto Github PK

:D

When writing my first parser, I really struggled with what the AST types should look like. I ended up generating a 1000 line file with all of the types I needed (https://github.com/samertm/chompy/blob/master/parse/nodes.go), which was a gigantic mess and made the next phase harder. I think I should have just had a single concrete Node type, like your Abstract.

Also, have you seen Rob Pike's video on writing a lexer in Go? It uses channels in a clever way (https://www.youtube.com/watch?v=HxaD_trXwRE), and I stole his technique for lexing multiple runes of the same type by checking them with strings.IndexRune (https://github.com/samertm/chompy/blob/master/lex/lex.go#L114).