[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Help starting with nyacc
From: |
Mike Gran |
Subject: |
Help starting with nyacc |
Date: |
Wed, 1 Jan 2020 10:44:53 -0800 |
User-agent: |
Mutt/1.11.3 (2019-02-01) |
Hello all-
I sincerely apologize that this is a "please do my work for me" email,
but, I don't know too much about LALR parsing outside of Ragel. I have
the following excerpt of a grammar that I've extracted from an ECMA-48
parser I wrote in Ragel, and I'd like to port it over to Guile via
NYACC. I think if someone could help me get the skeleton right, I
could carry on from there.
The Ragel parser (greatly edited) follows.
Thanks in advance!
Mike Gran
----
%%{
machine ECMA48;
alphtype unsigned char;
action do_lf {
// LF - LINE FEED.
console_move_down(1);
}
action do_osc {
// OSC - OPERATING SYSTEM COMMAND.
do_osc(p);
}
action do_print {
// Print single 8-bit glyph
do_print(p);
}
GLYPH = (0x20..0x7E | 0xA0..0xff) @do_print;
LF = 0x0A @do_lf;
command_string = ('\b' | space | graph)*;
OSC = (ESC 0x5D | 0x9D) command_string ST @do_osc;
main := ( LF | OSC | GLYPH )*;
}%%
%% write data;
---
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Help starting with nyacc,
Mike Gran <=