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import py
from rpython.jit.tl.tla import tla
def test_stack():
f = tla.Frame('')
f.push(1)
f.push(2)
f.push(3)
assert f.pop() == 3
assert f.pop() == 2
assert f.pop() == 1
py.test.raises(AssertionError, f.pop)
def test_W_IntObject():
w_a = tla.W_IntObject(0)
w_b = tla.W_IntObject(10)
w_c = tla.W_IntObject(32)
assert not w_a.is_true()
assert w_b.is_true()
assert w_c.is_true()
assert w_b.add(w_c).intvalue == 42
assert w_b.getrepr() == '10'
def assemble(mylist):
return ''.join([chr(x) for x in mylist])
def interp(mylist, w_arg):
bytecode = assemble(mylist)
return tla.run(bytecode, w_arg)
def test_interp():
code = [
tla.RETURN
]
res = interp(code, tla.W_IntObject(42))
assert res.intvalue == 42
def test_pop():
code = [
tla.CONST_INT, 99,
tla.POP,
tla.RETURN
]
res = interp(code, tla.W_IntObject(42))
assert res.intvalue == 42
def test_dup():
code = [
tla.DUP,
tla.ADD,
tla.RETURN
]
res = interp(code, tla.W_IntObject(41))
assert res.intvalue == 2 * 41
def test_bogus_return():
code = [
tla.CONST_INT, 123,
tla.RETURN # stack depth == 2 here, error!
]
py.test.raises(AssertionError, "interp(code, tla.W_IntObject(234))")
def test_add():
code = [
tla.CONST_INT, 20,
tla.ADD,
tla.RETURN
]
res = interp(code, tla.W_IntObject(22))
assert res.intvalue == 42
def test_sub():
code = [
tla.CONST_INT, 20,
tla.SUB,
tla.RETURN
]
res = interp(code, tla.W_IntObject(22))
assert res.intvalue == 2
def test_jump_if():
code = [
tla.JUMP_IF, 5, # jump to target
tla.CONST_INT, 123,
tla.RETURN,
tla.CONST_INT, 234, # target
tla.RETURN
]
res = interp(code, tla.W_IntObject(0))
assert res.intvalue == 123
res = interp(code, tla.W_IntObject(1))
assert res.intvalue == 234
def test_newstr():
code = [
tla.POP,
tla.NEWSTR, ord('x'),
tla.RETURN
]
res = interp(code, tla.W_IntObject(0))
assert isinstance(res, tla.W_StringObject)
assert res.strvalue == 'x'
# ____________________________________________________________
# EXERCISES
# ____________________________________________________________
def test_add_strings():
py.test.skip('exercise!')
code = [
tla.NEWSTR, ord('d'),
tla.ADD,
tla.NEWSTR, ord('!'),
tla.ADD,
tla.RETURN
]
res = interp(code, tla.W_StringObject('Hello worl'))
assert res.strvalue == 'Hello world!'
def test_mul():
py.test.skip('exercise!')
code = [
tla.CONST_INT, 2,
tla.MUL,
tla.RETURN
]
res = interp(code, tla.W_IntObject(21))
assert res.intvalue == 42
def test_mul_strings():
py.test.skip('exercise!')
code = [
tla.CONST_INT, 3,
tla.MUL,
tla.RETURN
]
res = interp(code, tla.W_StringObject('foo '))
assert res.strvalue == 'foo foo foo '
def test_div_float():
py.test.skip('exercise!')
code = [
tla.CONST_INT, 2,
tla.DIV,
tla.RETURN
]
res = interp(code, tla.W_IntObject(5))
assert isinstance(res, tla.W_FloatObject)
assert res.floatval == 2.5
# ____________________________________________________________
from rpython.jit.metainterp.test.support import LLJitMixin
class TestLLtype(LLJitMixin):
def test_loop(self):
code = [
tla.DUP,
tla.CONST_INT, 1,
tla.SUB,
tla.DUP,
tla.JUMP_IF, 1,
tla.POP,
tla.CONST_INT, 1,
tla.SUB,
tla.DUP,
tla.JUMP_IF, 0,
tla.RETURN
]
def interp_w(intvalue):
w_result = interp(code, tla.W_IntObject(intvalue))
assert isinstance(w_result, tla.W_IntObject)
return w_result.intvalue
res = self.meta_interp(interp_w, [42], listops=True)
assert res == 0
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