def test_binop1(compile_expr):
frame = compile_expr('1 + 2')
assert frame.code == [
ops.LoadConst(0),
ops.LoadConst(1),
ops.BinaryAdd(),
]
assert frame.consts == [
obj.LNumber(1.0),
obj.LNumber(2.0),
]
def test_arith1(compile_expr):
frame = compile_expr('1 - 2')
assert frame.code == [
ops.LoadConst(0),
ops.LoadConst(1),
ops.BinarySubtract(),
]
assert frame.consts == [
obj.LNumber(1.0),
obj.LNumber(2.0),
]
def test_ass3(compile_stmt):
frame = compile_stmt('a = 1 - 2')
assert frame.code == [
ops.LoadConst(0),
ops.LoadConst(1),
ops.BinarySubtract(),
ops.StoreName(0),
]
assert frame.consts == [
obj.LNumber(1.0),
obj.LNumber(2.0),
]
assert frame.vars == [
obj.LVar('a'),
]
def test_call1(compile_expr):
frame = compile_expr('print(1)')
assert frame.code == [ops.LoadConst(0), ops.LoadName(0), ops.Call()]
assert frame.consts == [
obj.LNumber(1.0),
]
assert frame.vars == [obj.LVar('print')]
def run(self):
while self.pc < len(self.code):
op = self.code[self.pc]
if type(op) == ops.BinaryAdd:
x = self.stack.pop()
y = self.stack.pop()
v = obj.LNumber(y.value + x.value)
self.stack.append(v)
elif type(op) == ops.BinarySubtract:
x = self.stack.pop()
y = self.stack.pop()
v = obj.LNumber(y.value - x.value)
self.stack.append(v)
elif type(op) == ops.Call:
func = self.stack.pop()
arg = self.stack.pop()
if type(arg) == obj.LVar:
arg = self.env[arg]
func(arg)
elif type(op) == ops.LoadConst:
self.stack.append(self.consts[op.index])
elif type(op) == ops.LoadName:
lvar = self.vars[op.index]
value = self.env.get(lvar)
if value is None:
value = getattr(builtin, 'lua_' + lvar.value)
self.stack.append(value)
elif type(op) == ops.StoreName:
var = self.vars[op.index]
val = self.stack.pop()
if type(val) == obj.LVar:
val = self.env[val]
self.env[var] = val
self.pc += 1
return self
def test_ass1(compile_stmt):
frame = compile_stmt('a = 1')
assert frame.code == [
ops.LoadConst(0),
ops.LoadConst(1),
ops.StoreName(),
]
assert frame.consts == [
obj.LVar('a'),
obj.LNumber(1.0),
]
def test_call1(compile_stmt):
frame = compile_stmt('print(1)')
assert frame.code == [
ops.LoadConst(0),
ops.LoadConst(1),
ops.Call(),
]
assert frame.consts == [
obj.LVar('print'),
obj.LNumber(1.0),
]
def visit_number(self, node, vc):
return obj.LNumber(float(node.value))
def test_ass1(interp_stmt):
frame = interp_stmt('a = 1')
assert frame.env == {
obj.LVar('a'): obj.LNumber(1.0),
}