1 fn read-cell in: (addr gap-buffer), out: (addr handle cell), trace: (addr trace) {
 2   var tokens-storage: (stream cell 0x400)
 3   var tokens/ecx: (addr stream cell) <- address tokens-storage
 4   tokenize in, tokens, trace
 5   var error?/eax: boolean <- has-errors? trace
 6   compare error?, 0/false
 7   {
 8     break-if-=
 9     return
10   }
11   # TODO: insert parens
12   # TODO: transform infix
13   parse-input tokens, out, trace
14 }