retro html formatted by nom
comments/suggestions to: mjb at nomlang dot org
I'm never bored by simplicity. Charles Moore (Forth inventor)
Pop the entire stack as a prefix into the workspace. This command
behaves exactly like multiple pop commands until the stack
is completely empty. This means that the tape pointer is
decremented once for each parse-token that is popped off the stack.
This behaviour applies to the pep interpreter and also to the
/tr/ “translation” scripts.
This is useful for displaying the state of the stack at the end of parsing or when an error has occurred. I also use this command for debugging after the parse> label.
The code below is very handy for debugging the grammar of a script because it shows you how that grammar tokens are reducing and when (by line and character number of the input stream).
parse>
add "line "; lines; add " char "; chars; add ": "; print; clear;
unstack; print; stack; print; clear;