def test10(self):
x = LogicVar('x')
x1 = Const('x')
y1 = Const('y')
eq_(
eval(
begin(assign(x1, L(L(1, x))), assign(y1, L(L(1, x))),
unify(x1, y1))), True)
def times(compiler, cont, item, expect_times, template=None, result=None):
if result is None:
expect_times1 = compiler.new_var(Const('expect_times'))
return begin(assign(expect_times1, getvalue(expect_times)),
times1(item, expect_times1)).cps(compiler, cont)
else:
expect_times1 = compiler.new_var(Const('expect_times'))
result1 = compiler.new_var(il.ConstLocalVar('result'))
result2 = compiler.new_var(Var('result'))
result2_2 = result2.interlang()
template1 = template.interlang()
return begin(assign(expect_times1, getvalue(expect_times)),
times2(item, expect_times1, template, result2),
unify(result, result2)).cps(compiler, cont)
def alpha_rule_head_item(item, env, compiler):
if isinstance(item, Var):
if isinstance(item, Const):
env.bindings[item] = result = compiler.new_var(Const(item.name))
else:
env.bindings[item] = result = compiler.new_var(Var(item.name))
return result
else:
if isinstance(item, Cons):
return Cons(alpha_rule_head_item(item.head, env, compiler),
alpha_rule_head_item(item.tail, env, compiler))
else:
return item
def cps(self, compiler, cont):
k = compiler.new_var(il.ConstLocalVar('cont'))
params = tuple([compiler.new_var(Const('arg'))
for x in range(self.arity)])
clauses = []
for head, body in self.rules:
head_exps = begin(*tuple(unify_head_item2(param, head_item)
for param, head_item in zip(params, head)))
clauses.append(begin(head_exps, body))
if self.has_cut():
body = wrap_cut(or_(*clauses)).cps(compiler, k)
else:
body = or_(*clauses).cps(compiler, k)
params = tuple(param.interlang() for param in params)
return cont(il.Lamda((k,)+params, body))
def testletdouble2(self):
x, f = Const('x'), ConstMacroVar('f')
eq_(eval(let([(f, macro([x], add(x, x)))], f(1))), 2)
def test_letrec_assign2(self):
x, f = Const('x'), Const('f')
assert_raises(MultiAssignToConstError, eval,
letrec([(f, macro((x, ), f(1), assign(f, 1)))], f(2)))
def testeval3(self):
x = Const('x')
eq_(eval(let([(x, quote(1))], eval_(x))), 1)
def test_let_assign_const(self):
a = Const('a')
assert_raises(MultiAssignToConstError, eval, let([(a, 2)],
assign(a, 3)))
def test_closure2(self):
x, f = Const('x'), Const('f')
eq_(eval(let([(f, macrorules([[x], x])), (x, 1)], f(add(x, x)))), 2)
def testassign2(self):
a = Const('a')
assert_raises(MultiAssignToConstError, eval,
begin(assign(a, 2), assign(a, 3)))
def test_let2(self):
x = Const('x')
assert_raises(MultiAssignToConstError, eval,
let([(x, 1)], let([(x, 2)], assign(x, 2))))
def test_let(self):
x = Const('x')
eq_(eval(let([(x, 1)], x)), 1)
eq_(eval(let([(x, 1)], let([(x, 2)], x))), 2)
def test_lamda2(self):
x, y = Const('x'), Const('y')
eq_(eval(lamda((x, y), add(x, y))(1, 3)), 4)
def test_lamda(self):
x = Const('x')
eq_(eval(lamda((x, ), 1)(1)), 1)
eq_(eval(lamda((x, ), 1)(2)), 1)
eq_(eval(lamda((x, ), x)(2)), 2)
def testassign0(self):
a = Const('a')
eq_(eval(assign(a, 2)), 2)
def testassign1(self):
a = Const('a')
eq_(eval(begin(assign(a, 2), a)), 2)
def test_let3(self):
x, y = Const('x'), Const('y')
eq_(eval(let([(x, 1), (y, 2)], add(x, y))), 3)
def test_closure1(self):
x, f = Const('x'), Const('f')
eq_(eval(let([(f, macrorules([[x], prin(x)])), (x, 1)], f(add(x, x)))),
None)
def test_letrec(self):
x, y = Const('x'), Const('y')
eq_(eval(letrec([(x, 1), (y, x)], y)), 1)
eq_(eval(letrec([(x, 1), (y, add(x, 1))], y)), 2)
def test_closure3(self):
x, y, f = Const('x'), Const('y'), Const('f')
eq_(
eval(
let([(f, macrorules([[x, y], begin(x, y)])), (x, 1)],
f(prin(x), prin(add(x, x))))), None)
def testletdouble(self):
x, f = Const('x'), Const('f')
eq_(eval(let([(f, lamda([x], add(x, x)))], f(1))), 2)
def testeval2(self):
x = Const('x')
eq_(eval(let([(x, 1)], eval_(quote(x)))), 1)
def test_macro3(self):
x, y = Const('x'), Const('y')
eq_(eval(macro((x, y), y, x, 1)(println(1), prin(2))), 1)
def testeval4(self):
x = Const('x')
eq_(eval(let([(x, quote(add(1, 1)))], eval_(x))), 2)
def test_macro5(self):
x, y, f = Const('x'), Const('y'), MacroVar('f')
eq_(eval(let([(f, macro((x, y), y, x, 1))], f(println(1), prin(2)))),
1)