def _metagrammar():
gstring = util.builtin_grammar("meta.bkgrammar")
# Use the bootstrap parser to parse the meta grammar
mg = p.BootGrammar().parse(gstring)
assert isinstance(mg, p.Grammar)
# Use the meta-grammar to parse itself
mg2 = mg.parse(gstring)
return mg2
def test_parse_meta():
gstring = util.builtin_grammar("meta.bkgrammar")
# Use the bootstrap parser to parse the meta grammar
mg = p.BootGrammar().parse(gstring)
assert isinstance(mg, p.Grammar)
# Use the meta-grammar to parse itself
mg2 = mg.parse(gstring)
rd1 = mg.ruledict
rd2 = mg2.ruledict
# Check that the results are the same
assert rd1.keys() == rd2.keys()
pairs = [(rd1[k], rd2[k]) for k in sorted(rd1.keys())]
for r1, r2 in pairs:
if r1 != r2:
r1.dump()
r2.dump()
assert r1 == r2
def setup_module():
global wg
gstring = util.builtin_grammar("wiki.bkgrammar")
wg = _parse_wiki_grammar(gstring)
def test_parse_meta_string():
gstring = util.builtin_grammar("meta.bkgrammar")
bg = p.BootGrammar()
#bg.context.tracing = True
out, i = bg.context["rule"].accept(gstring, 0, bg.context)
assert out is not p.Miss
