def test_assumptions():
# ASTs generated seperately from the same source should compare equal
test_tree = sri_ast.parse_to_ast("foo = 42")
expected_tree = sri_ast.parse_to_ast("foo = 42")
assert sri_ast.compare_nodes(test_tree, expected_tree)
# ASTs generated seperately with different source should compare not-equal
test_tree = sri_ast.parse_to_ast("foo = 42")
expected_tree = sri_ast.parse_to_ast("bar = 666")
assert not sri_ast.compare_nodes(test_tree, expected_tree)
def test_replace_builtin_constant_no(source):
unmodified_ast = sri_ast.parse_to_ast(source)
folded_ast = sri_ast.parse_to_ast(source)
folding.replace_builtin_constants(folded_ast)
assert sri_ast.compare_nodes(unmodified_ast, folded_ast)
def test_replace_constant_no(source):
unmodified_ast = sri_ast.parse_to_ast(source)
folded_ast = sri_ast.parse_to_ast(source)
folding.replace_constant(folded_ast, "FOO", sri_ast.Int(value=31337), True)
assert sri_ast.compare_nodes(unmodified_ast, folded_ast)
def test_compare_different_node_clases():
srilang_ast = sri_ast.parse_to_ast("foo = 42")
left = srilang_ast.body[0].target
right = srilang_ast.body[0].value
assert left != right
assert not sri_ast.compare_nodes(left, right)
def test_replace_builtins(source, original, result):
original_ast = sri_ast.parse_to_ast(source.format(original))
target_ast = sri_ast.parse_to_ast(source.format(result))
folding.replace_builtin_functions(original_ast)
assert sri_ast.compare_nodes(original_ast, target_ast)
def test_replace_subscripts_simple():
test_ast = sri_ast.parse_to_ast("[foo, bar, baz][1]")
expected_ast = sri_ast.parse_to_ast("bar")
folding.replace_subscripts(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_compare_complex_nodes_same_value():
srilang_ast = sri_ast.parse_to_ast(
"[{'foo':'bar', 43:[1,2,3]}, {'foo':'bar', 43:[1,2,3]}]")
left, right = srilang_ast.body[0].value.elts
assert left != right
assert sri_ast.compare_nodes(left, right)
def test_replace_subscripts_nested():
test_ast = sri_ast.parse_to_ast("[[0, 1], [2, 3], [4, 5]][2][1]")
expected_ast = sri_ast.parse_to_ast("5")
folding.replace_subscripts(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_integration():
test_ast = sri_ast.parse_to_ast("[1+2, 6+7][8-8]")
expected_ast = sri_ast.parse_to_ast("3")
folding.fold(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_replace_binop_nested():
test_ast = sri_ast.parse_to_ast("((6 + (2**4)) * 4) / 2")
expected_ast = sri_ast.parse_to_ast("44")
folding.replace_literal_ops(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_replace_binop_simple():
test_ast = sri_ast.parse_to_ast("1 + 2")
expected_ast = sri_ast.parse_to_ast("3")
folding.replace_literal_ops(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_replace_literal_ops():
test_ast = sri_ast.parse_to_ast(
"[not True, True and False, True or False]")
expected_ast = sri_ast.parse_to_ast("[False, False, True]")
folding.replace_literal_ops(test_ast)
assert sri_ast.compare_nodes(test_ast, expected_ast)
def test_replace_userdefined_constant_no(source):
source = f"FOO: constant(int128) = 42\n{source}"
unmodified_ast = sri_ast.parse_to_ast(source)
folded_ast = sri_ast.parse_to_ast(source)
folding.replace_user_defined_constants(folded_ast)
assert sri_ast.compare_nodes(unmodified_ast, folded_ast)
def test_list_replacement_similar_nodes():
test_tree = sri_ast.parse_to_ast("foo = [1, 1, 1, 1, 1]")
expected_tree = sri_ast.parse_to_ast("foo = [1, 1, 31337, 1, 1]")
old_node = test_tree.body[0].value.elts[2]
new_node = sri_ast.parse_to_ast("31337").body[0].value
test_tree.replace_in_tree(old_node, new_node)
assert sri_ast.compare_nodes(test_tree, expected_tree)
def test_simple_replacement():
test_tree = sri_ast.parse_to_ast("foo = 42")
expected_tree = sri_ast.parse_to_ast("bar = 42")
old_node = test_tree.body[0].target
new_node = sri_ast.parse_to_ast("bar").body[0].value
test_tree.replace_in_tree(old_node, new_node)
assert sri_ast.compare_nodes(test_tree, expected_tree)
def parse_for(self):
# Type 0 for, e.g. for i in list(): ...
if self._is_list_iter():
return self.parse_for_list()
if not isinstance(self.stmt.iter, sri_ast.Call):
if isinstance(self.stmt.iter, sri_ast.Subscript):
raise StructureException("Cannot iterate over a nested list",
self.stmt.iter)
raise StructureException(
f"Cannot iterate over '{type(self.stmt.iter).__name__}' object",
self.stmt.iter)
if getattr(self.stmt.iter.func, 'id', None) != "range":
raise StructureException(
"Non-literals cannot be used as loop range",
self.stmt.iter.func)
if len(self.stmt.iter.args) not in {1, 2}:
raise StructureException(
f"Range expects between 1 and 2 arguments, got {len(self.stmt.iter.args)}",
self.stmt.iter.func)
block_scope_id = id(self.stmt)
with self.context.make_blockscope(block_scope_id):
# Get arg0
arg0 = self.stmt.iter.args[0]
num_of_args = len(self.stmt.iter.args)
# Type 1 for, e.g. for i in range(10): ...
if num_of_args == 1:
arg0_val = self._get_range_const_value(arg0)
start = LLLnode.from_list(0,
typ='int128',
pos=getpos(self.stmt))
rounds = arg0_val
# Type 2 for, e.g. for i in range(100, 110): ...
elif self._check_valid_range_constant(self.stmt.iter.args[1],
raise_exception=False)[0]:
arg0_val = self._get_range_const_value(arg0)
arg1_val = self._get_range_const_value(self.stmt.iter.args[1])
start = LLLnode.from_list(arg0_val,
typ='int128',
pos=getpos(self.stmt))
rounds = LLLnode.from_list(arg1_val - arg0_val,
typ='int128',
pos=getpos(self.stmt))
# Type 3 for, e.g. for i in range(x, x + 10): ...
else:
arg1 = self.stmt.iter.args[1]
if not isinstance(arg1, sri_ast.BinOp) or not isinstance(
arg1.op, sri_ast.Add):
raise StructureException(
("Two-arg for statements must be of the form `for i "
"in range(start, start + rounds): ...`"),
arg1,
)
if not sri_ast.compare_nodes(arg0, arg1.left):
raise StructureException(
("Two-arg for statements of the form `for i in "
"range(x, x + y): ...` must have x identical in both "
f"places: {sri_ast.ast_to_dict(arg0)} {sri_ast.ast_to_dict(arg1.left)}"
),
self.stmt.iter,
)
rounds = self._get_range_const_value(arg1.right)
start = Expr.parse_value_expr(arg0, self.context)
r = rounds if isinstance(rounds, int) else rounds.value
if r < 1:
raise StructureException(
f"For loop has invalid number of iterations ({r}),"
" the value must be greater than zero", self.stmt.iter)
varname = self.stmt.target.id
pos = self.context.new_variable(varname,
BaseType('int128'),
pos=getpos(self.stmt))
self.context.forvars[varname] = True
o = LLLnode.from_list(
[
'repeat', pos, start, rounds,
parse_body(self.stmt.body, self.context)
],
typ=None,
pos=getpos(self.stmt),
)
del self.context.vars[varname]
del self.context.forvars[varname]
return o
def test_compare_nodes():
old_node = sri_ast.parse_to_ast("foo = 42")
new_node = sri_ast.Int.from_node(old_node, value=666)
assert not sri_ast.compare_nodes(old_node, new_node)
def test_compare_same_node():
srilang_ast = sri_ast.parse_to_ast("42")
node = srilang_ast.body[0].value
assert node == node
assert sri_ast.compare_nodes(node, node)
def test_compare_different_nodes_same_value():
srilang_ast = sri_ast.parse_to_ast("[1, 1]")
left, right = srilang_ast.body[0].value.elts
assert left != right
assert sri_ast.compare_nodes(left, right)
def test_binary_becomes_bytes():
expected = sri_ast.parse_to_ast("foo: bytes[1] = b'\x01'")
mutated = sri_ast.parse_to_ast("foo: bytes[1] = 0b00000001")
assert sri_ast.compare_nodes(expected, mutated)
