[SimpleParse] How to do use "!" (Error on fail - cut)

[Martin d'A. <Mar...@s2...>]

Hi,

There is not much activity here, I hope there is someone watching! I am
really struggling with the "!" Error on fail (cut), I hope someone can
help me.

I keep getting an 'Expected syntax: builddecl' error when I run the 
following. I know I am getting it because I introduced a "!" after 
'builddecl', but I don't understand why it would be an error. Maybe my 
EBNF is all wrong. I have supplied the shortest example I could create 
that reproduces the problem below. Thanks in advance to anyone who can 
help!

I have the following EBNF definition in a file called biz.def:

file          := ts, section, ts, section*
<ts>          := ( [ \011-\015]+ / hash_comment )*
<ws>          := [ \t]
section       := builddecl!,elementdecl!,elementdecl*
builddecl     := ws*,'build',ws+,name,ws+,'on',ws+,planet,ts
elementdecl   := ws*,'element',ws*,'=',ws*,item,ws+,'is',ws+,quality,ts
name          := identifier
planet        := identifier
item          := identifier
quality       := identifier
identifier    := [a-zA-Z_],[a-zA-Z0-9_]*

I have the following text I try to parse with it:

# this is the file I try to parse
build cars on pluto
element = door is red
element = seats is leather

And here is the program to parse it:

import os
from sys import stdin, stdout, stderr
from simpleparse import generator
import simpleparse.common.comments
import simpleparse.common.numbers
from mx.TextTools import TextTools
import pprint

input = stdin.read()
decl = open('biz.def').read()
parser = generator.buildParser(decl).parserbyname('file')
taglist = TextTools.tag(input, parser)
pprint.pprint(taglist)

stderr.write('parsed %s chars of %s\n' %  (taglist[-1], len(input)))
if taglist[-1] != len(input):
   print "ERROR near line",input[:taglist[-1]].count('\n')



Thanks,
Martin d'Anjou