def __init__(self, name, grammar):
self.__form_name__ = name
if grammar is None:
self.__form_grammar__ = None
else:
#print grammar
self.__form_grammar__ = to_sexpression(preparse(or_p(grammar, syntax_error)))
self.__operator_data__ = []
def testOr(self):
x, s, one, two = Var('x'), Var('s'), Var('one'), Var('two')
ruleList = [(s, function( ((x,), or_p(one(x), two(x))))),
(one, function( (('1',),char('1')))),
(two, function( (('2',),char('2'))))]
eq_(eval(letr(ruleList, parse_text(s(x), '1'))), '1')
eq_(eval(letr(ruleList, parse_text(s(y), '2'))), '2')
assert_raises(NoSolutionFound, eval, letr(ruleList, parse_text(s(x), '3')))
assert_raises(NoSolutionFound, eval, letr(ruleList, parse_text(and_p(s(x), eoi), '12')))
assert_raises(NoSolutionFound, eval, letr(ruleList, parse_text(s(x), '')))
def testOr(self):
x, s, one, two = Var('x'), Var('s'), Var('one'), Var('two')
ruleList = [(s, function(((x, ), or_p(one(x), two(x))))),
(one, function((('1', ), char('1')))),
(two, function((('2', ), char('2'))))]
eq_(eval(letr(ruleList, parse_text(s(x), '1'))), '1')
eq_(eval(letr(ruleList, parse_text(s(y), '2'))), '2')
assert_raises(NoSolutionFound, eval,
letr(ruleList, parse_text(s(x), '3')))
assert_raises(NoSolutionFound, eval,
letr(ruleList, parse_text(and_p(s(x), eoi), '12')))
assert_raises(NoSolutionFound, eval,
letr(ruleList, parse_text(s(x), '')))
def test_Or(self):
eq_(
compile(or_p(fail, succeed)), '''
def or_p(call1, call2):
for x in call1:
yield x
for x in call2:
yield x
def fail():
if 0: yield True
def succeed():
yield True
for x in or_p(fail, succeed):
yield x
''')
def __or__(self, other): from dao.builtins.control import or_p return or_p(self, other)
def test_some3(self):
eq_(eval(parse_text(some(or_p(char('1'),char('2'))), '2')), True)
def test_any2(self):
eq_(eval(parse_text(any(or_p(char('1'), char('2'))), '2')), True)
def test_Or(self): eq_(eval(or_p(fail, succeed)), True)
def test_some3(self):
eq_(eval(parse_text(some(or_p(char('1'), char('2'))), '2')), True)
def test_any2(self):
eq_(eval(parse_text(any(or_p(char('1'), char('2'))), '2')), True)
def test_Or(self):
eq_(compile(or_p(fail, succeed)),
'''for x in or_p(fail, succeed): yield x''')
def ___parse___(self, parser): return or_p(parser.parse(self.call1), parser.parse(self.call2))
([exp_list], and_p(char('['), spaces0(_), from_sexp(sexpression_list)(exp_list), spaces0(_), char(']'))))),
define(punct_expression, function(
([L(quote, exp)], and_p(char("'"), from_sexp(sexpression)(exp))),
([L(quasiquote, exp)], and_p(char("`"), from_sexp(sexpression)(exp))),
([L(unquote_splice, exp)], and_p(literal(",@"), from_sexp(sexpression)(exp))),
([L(unquote, exp)], and_p(char(","), from_sexp(sexpression)(exp))))),
define(sexpression_list, function(
([Cons(exp, exp_list)], and_p(from_sexp(sexpression)(exp), from_sexp(maybe_spaces)(), from_sexp(sexpression_list)(exp_list))),
([nil], null))),
define(sexpression1, function(
([exp], and_p(spaces0(_), from_sexp(sexpression_list)(exp), spaces0(_))))),
define(maybe_spaces, function(
([], or_p(if_p(and_p(not_lead_chars('([])'), not_follow_chars('([])'), not_p(eoi)),
spaces(_)),
spaces0(_) ) ) ) ),
define(sexpression, function(
# dynamic grammar arises!
([result], and_p(char('{'), from_sexp(sexpression)(exp2), char('}'),
setvalue(result, eval_(pycall(cons2tuple, exp2))))),
([exp], from_sexp(atom)(exp)),
([exp], from_sexp(bracket_expression)(exp)),
([exp], from_sexp(punct_expression)(exp))),
),
)