def test_letrec_odd_even(self):
from util import n, odd, even
eq_(
eval(
letrec([(odd, lamda([n], if_(eq(n, 0), 0, even(sub(n, 1))))),
(even, lamda([n], if_(eq(n, 0), 1, odd(sub(n, 1)))))],
odd(3))), 1)
def test_letrec_odd_even(self):
from util import n
odd, even = MacroVar('odd'), MacroVar('even')
eq_(
eval(
letrec([(odd, macro([n], if_(eq(n, 0), 0, even(sub(n, 1))))),
(even, macro([n], if_(eq(n, 0), 1, odd(sub(n, 1)))))],
odd(3))), 1)
def test_unwind_protect_loop(self):
from util import a, i
eq_(eval(let([(i,3)],
block(a, assign(i, sub(i, 1)),
if_(eq(i, 0),
exit_block(a, 1),
unwind_protect(continue_block(a), prin(i)))), i)), 0)
def testLoopUntil(self):
eq_(
eval(
tag_loop_label(
let([(i, 3)],
LoopUntilForm((set(i, sub(i, 1)), prin(i)),
eq(i, 0))))), None)
def test_letrec_fac(self):
from util import m, n, fac
eq_(
eval(
letrec([
(fac, lamda([n], if_(eq(n, 1), 1, mul(n, fac(sub(n, 1))))))
], fac(3))), 6)
def testloop(self):
from util import a, i
eq_(eval(let([(i,3)],
block(a, assign(i, sub(i, 1)),
if_(eq(i, 0),
exit_block(a, 1),
continue_block(a))),
i)), 0)
def test_letrec_fac(self):
from util import m, n
fac = MacroVar('fac')
eq_(
eval(
letrec([
(fac, macro([n], if_(eq(n, 1), 1, mul(n, fac(sub(n, 1))))))
], fac(3))), 6)
def testloop(self):
from util import a, i
eq_(
eval(
let([(i, 3)],
block(a, assign(i, sub(i, 1)),
if_(eq(i, 0), exit_block(a, 1), continue_block(a))),
i)), 0)
def test_macro6(self):
n, act, ntimes = Var('n'), Var('act'), MacroVar('ntimes')
eq_(
eval(
letrec([(ntimes,
macro((n, act),
if_(eq(n, 0), 1,
begin(act, ntimes(sub(n, 1), act)))))],
ntimes(3, println(1)))), 1)
def test_unwind_protect_loop(self):
from util import a, i
eq_(
eval(
let([(i, 3)],
block(
a, assign(i, sub(i, 1)),
if_(eq(i, 0), exit_block(a, 1),
unwind_protect(continue_block(a), prin(i)))), i)),
0)
def testLoopUntil(self):
eq_(eval(tag_loop_label(let([(i,3)], LoopUntilForm((set(i, sub(i, 1)), prin(i)),
eq(i,0))))), None)
def test_macro6(self):
n, act, ntimes = Var('n'), Var('act'), MacroVar('ntimes')
eq_(eval(letrec([(ntimes, macro((n, act),
if_(eq(n, 0), 1,
begin(act, ntimes(sub(n, 1), act)))))],
ntimes(3, println(1)))), 1)
def test_letrec_odd_even(self):
from util import n, odd, even
eq_(eval(letrec([(odd, lamda([n], if_(eq(n,0), 0, even(sub(n,1))))),
(even, lamda([n], if_(eq(n,0), 1, odd(sub(n, 1)))))],
odd(3))), 1)
def test_letrec3(self):
x, f = Var('x'), MacroVar('f')
eq_(eval(letrec([(f, macro((x,), if_(eq(x,1), 1, f(sub(x,1)))))], f(2))), 1)
def test_letrec3(self):
x, f = Var('x'), MacroVar('f')
eq_(
eval(
letrec([(f, macro((x, ), if_(eq(x, 1), 1, f(sub(x, 1)))))],
f(2))), 1)
def test_letrec_fac(self):
from util import m, n
fac = MacroVar('fac')
eq_(eval(letrec([(fac, macro([n], if_(eq(n,1), 1, mul(n, fac(sub(n, 1))))))],
fac(3))), 6)
def test_letrec_odd_even(self):
from util import n
odd, even = MacroVar('odd'), MacroVar('even')
eq_(eval(letrec([(odd, macro([n], if_(eq(n,0), 0, even(sub(n,1))))),
(even, macro([n], if_(eq(n,0), 1, odd(sub(n, 1)))))],
odd(3))), 1)
def test_letrec_fac(self):
from util import m, n, fac
eq_(eval(letrec([(fac, lamda([n], if_(eq(n,1), 1, mul(n, fac(sub(n, 1))))))],
fac(3))), 6)
def test_eq_le_ne(self): eq_(eval(and_a(le(1, 1), ne(1, 2))), True) eq_(eval(eq(1, 1)), True) eq_(eval(le(1, 1)), True)
def test_eq_le_ne(self):
eq_(eval(and_a(le(1, 1), ne(1, 2))), True)
eq_(eval(eq(1, 1)), True)
eq_(eval(le(1, 1)), True)
