def test_parse(s, parser, matched_str, attrval):
print '**********', s, '************'
i = stringiter(s)
c = i.clone()
attr = attr_t()
m = parser.parse(i, None, None, attr)
if matched_str:
assert m
print "yeah hit"
assert m == matched_str, "%s != %s" % (m, matched_str)
print "match is correct"
assert i == c + len(matched_str)
print "iterator incremented correct amount"
assert attr.value == attrval, 'got attr.value "%s" expected "%s"' % (attr.value, attrval)
else:
assert i == c
print "verified iterator not changed"
assignment <<= (tok_p('IDENTIFIER') >> tok_p('ASSIGN') >> expr)[pushval(0), pushop('s')]
float_p <<= (tok_p('PLUS') | tok_p('MINUS')).opt >> tok_p('FLOAT')
expr <<= term >> ((tok_p('PLUS') | tok_p('MINUS')) >> term).star[pushzero]
term <<= factor >> ((tok_p('TIMES') | tok_p('DIVIDE'))>> factor).star[pushzero]
factor <<= number | tok_p('IDENTIFIER')[push, pushop('l')] | (tok_p('LPAREN') >> expr >> tok_p('RPAREN'))
number <<= (tok_p('NUMBER') | float_p)[push]
attr = attr_t()
toks = tokenize('''baz = bar * 0 + 3
bar = 1 * 4 + foo
foo = 2 + 5
''')
#1
#2
#''')
print "TOKS:"
pprint(toks)
i = stringiter(toks)
print program.parse(i, None, None, attr)
print attr
def parse(s, prsr):
i = stringiter(s)
attr = attr_t()
m = prsr.parse(i, None, None, attr)
print "afterwards attr is", attr.value
return m
