def test_transform_try_except_with_exception_type_and_name():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
handlers=[
cc.except_(cc.ref("AssertionError"), cc.ref("error"), [cc.ret(cc.ref("y"))]),
],
),
"""
try {
return x;
} catch ($exception0) {
if ($exception0.$nopeException === $nope.undefined) {
throw $exception0;
} else {
if ($nope.builtins.isinstance($exception0.$nopeException, AssertionError)) {
var error = $exception0.$nopeException;
return y;
} else {
throw $exception0;
}
}
}
""",
)
def test_transform_try_except_with_multiple_exception_handlers():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
handlers=[
cc.except_(cc.ref("AssertionError"), None, [cc.ret(cc.ref("y"))]),
cc.except_(cc.ref("Exception"), None, [cc.ret(cc.ref("z"))]),
],
),
"""
try {
return x;
} catch ($exception0) {
if ($exception0.$nopeException === $nope.undefined) {
throw $exception0;
} else {
if ($nope.builtins.isinstance($exception0.$nopeException, AssertionError)) {
return y;
} else {
if ($nope.builtins.isinstance($exception0.$nopeException, Exception)) {
return z;
} else {
throw $exception0;
}
}
}
}
""",
)
def test_condition_is_transformed_using_bool_builtin(self):
_assert_transform(
nodes.if_(
nodes.ref("x"),
[nodes.ret(nodes.ref("y"))],
[nodes.ret(nodes.ref("z"))],
),
cc.if_(
cc.call(cc.builtin("bool"), [cc.ref("x")]),
[cc.ret(cc.ref("y"))],
[cc.ret(cc.ref("z"))],
)
)
def test_statements_in_bodies_are_transformed(self):
_assert_transform(
nodes.try_(
[nodes.ret(nodes.ref("x"))],
handlers=[nodes.except_(nodes.ref("Exception"), nodes.ref("error"), [nodes.ref("y")])],
finally_body=[nodes.ret(nodes.ref("z"))],
),
cc.try_(
[cc.ret(cc.ref("x"))],
handlers=[cc.except_(cc.ref("Exception"), cc.ref("error"), [cc.ref("y")])],
finally_body=[cc.ret(cc.ref("z"))],
),
)
def test_transform_if_else():
_assert_transform(
cc.if_(
cc.ref("x"),
[cc.ret(cc.ref("y"))],
[cc.ret(cc.ref("z"))],
),
js.if_(
js.ref("x"),
[js.ret(js.ref("y"))],
[js.ret(js.ref("z"))],
)
)
def test_transform_try_finally():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
finally_body=[cc.ret(cc.ref("y"))],
),
"""
try {
return x;
} finally {
return y;
}
""",
)
def test_transform_class_with_methods():
_assert_transform(
cc.class_(
name="User",
methods=[
cc.func(
"f",
[cc.arg("self"), cc.arg("x")],
[cc.ret(cc.none)],
)
],
body=[]
),
"""
function $f0(self, x) {
return null;
}
User = function() {
var $self1 = {
"$nopeType": User
};
$self1.f = $nope.instanceAttribute($self1, $f0);
return $self1;
};
"""
)
def methods_are_set_as_members_on_object(self):
node = cc.class_("A", methods=[
cc.func("f", [cc.arg("self")], [
cc.ret(cc.ref("self"))
])
], body=[])
expected_aux = """internal class __A {
internal dynamic f;
}
"""
expected = """A = new
{
__call__ = ((System.Func<dynamic>)(() =>
{
dynamic __self = null;
__self = new __A {
f = ((System.Func<dynamic>)(() =>
{
dynamic self = __self;
return self;
})),
};
return __self;
})),
};
"""
transformer = _create_transformer()
assert_equal(expected, cs.dumps(transformer.transform(node)))
assert_equal(expected_aux, cs.dumps(transformer.aux()))
def test_condition_is_not_transformed_using_bool_builtin_if_already_a_bool(self):
condition_node = nodes.ref("x")
_assert_transform(
nodes.if_(
condition_node,
[nodes.ret(nodes.ref("y"))],
[nodes.ret(nodes.ref("z"))],
),
cc.if_(
cc.ref("x"),
[cc.ret(cc.ref("y"))],
[cc.ret(cc.ref("z"))],
),
type_lookup=[
(condition_node, types.bool_type),
],
)
def function_with_multiple_arguments_is_converted_to_csharp_lambda_assignment_with_dynamic_args(self):
node = cc.func("f", [cc.arg("x"), cc.arg("y")], [cc.ret(cc.none)])
expected = """
f = ((System.Func<dynamic, dynamic, dynamic>)((dynamic x, dynamic y) =>
{
return __NopeNone.Value;
}));"""
assert_equal(expected.strip(), cs.dumps(transform(node)).strip())
def function_with_zero_arguments_is_converted_to_csharp_lambda_assignment(self):
node = cc.func("f", [], [cc.ret(cc.none)])
expected = """
f = ((System.Func<dynamic>)(() =>
{
return __NopeNone.Value;
}));"""
assert_equal(expected.strip(), cs.dumps(transform(node)).strip())
def test_function_definitions_in_body_are_stored_as_methods(self):
_assert_transform(
nodes.class_("Blah", [nodes.func("f", nodes.args([]), [], type=None)]),
cc.class_(
"Blah",
methods=[cc.func("f", [], [cc.ret(cc.none)])],
body=[cc.declare("f")],
),
)
def test_transform_try_with_empty_finally_body():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
finally_body=[],
),
"""
return x;
""",
)
def test_transform_while_loop(self):
_assert_transform(
nodes.while_(
nodes.ref("x"),
[nodes.ret(nodes.ref("y"))],
),
cc.while_(
cc.call(cc.builtin("bool"), [cc.ref("x")]),
[cc.ret(cc.ref("y"))],
)
)
def test_transform_while_loop():
_assert_transform(
cc.while_(
cc.ref("x"),
[cc.ret(cc.ref("y"))],
),
js.while_(
js.ref("x"),
[js.ret(js.ref("y"))],
)
)
def test_variables_are_declared(self):
_assert_transform(
nodes.func("f", nodes.args([]), [
nodes.assign([nodes.ref("x")], nodes.ref("y")),
nodes.ret(nodes.ref("value")),
], type=None),
cc.func("f", [], [
cc.declare("x"),
cc.assign(cc.ref("x"), cc.ref("y")),
cc.ret(cc.ref("value")),
]),
)
def test_function_without_explicit_return_on_all_paths_returns_none_at_end(self):
_assert_transform(
nodes.func(
name="f",
args=nodes.args([]),
body=[
nodes.if_(
nodes.ref("x"),
[nodes.ret(nodes.bool_literal(True))],
[]
),
],
type=None
),
cc.func("f", [], [
cc.if_(
cc.call(cc.builtin("bool"), [cc.ref("x")]),
[cc.ret(cc.true)],
),
cc.ret(cc.none),
]),
)
def try_with_finally_is_converted_to_try_with_finally(self):
node = cc.try_(
[cc.ret(cc.ref("x"))],
finally_body=[cc.expression_statement(cc.ref("y"))]
)
expected = """try {
return x;
} finally {
y;
}
"""
assert_equal(expected, cs.dumps(transform(node)))
def test_transform_function_declaration():
_assert_transform(
cc.func(
name="f",
args=[cc.arg("x"), cc.arg("y")],
body=[cc.ret(cc.ref("x"))],
),
js.function_declaration(
name="f",
args=["x", "y"],
body=[js.ret(js.ref("x"))],
)
)
def test_generator_is_transformed_to_function_call_with_anonymous_function(self):
_assert_transform(
nodes.generator_expression(
nodes.ref("y"),
nodes.ref("x"),
nodes.ref("xs")
),
cc.call(
cc.internal("generator_expression"),
[
cc.function_expression([cc.arg("x")], [cc.ret(cc.ref("y"))]),
cc.ref("xs")
]
)
)
def test_transform_try_except_with_no_name():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
handlers=[
cc.except_(None, None, [cc.ret(cc.ref("y"))]),
],
),
"""
try {
return x;
} catch ($exception0) {
if ($exception0.$nopeException === $nope.undefined) {
throw $exception0;
} else {
if ($nope.builtins.isinstance($exception0.$nopeException, $nope.builtins.Exception)) {
return y;
} else {
throw $exception0;
}
}
}
""",
)
def test_does_not_redeclare_variables_with_same_name_as_argument(self):
_assert_transform(
nodes.func(
name="f",
args=nodes.args([nodes.arg("x")]),
body=[
nodes.assign(["x"], nodes.ref("y")),
nodes.ret(nodes.ref("value")),
],
type=None,
),
cc.func("f", [cc.arg("x")], [
cc.assign(cc.ref("x"), cc.ref("y")),
cc.ret(cc.ref("value")),
])
)
def test_does_not_redeclare_variables_with_same_name_as_type_parameter(self):
_assert_transform(
nodes.func(
name="f",
args=nodes.args([]),
body=[],
type=nodes.signature(
type_params=[nodes.formal_type_parameter("T")],
args=[],
returns=nodes.ref("T"),
),
),
cc.func("f", [], [
cc.ret(cc.none),
])
)
def test_list_comprehension_is_transformed_as_with_generator_expression_but_wrapped_in_list_call(self):
_assert_transform(
nodes.list_comprehension(
nodes.ref("y"),
nodes.ref("x"),
nodes.ref("xs")
),
cc.call(
cc.internal("iterator_to_list"),
[
cc.call(
cc.internal("generator_expression"),
[
cc.function_expression([cc.arg("x")], [cc.ret(cc.ref("y"))]),
cc.ref("xs")
]
)
]
)
)
def type_of_nope_exception_is_checked_if_handler_has_exception_type(self):
node = cc.try_(
[],
handlers=[
cc.except_(cc.ref("Exception"), None, [
cc.ret(cc.ref("value"))
])
]
)
expected = """try {
} catch (__Nope.Internals.@__NopeException __exception) {
if ((__Nope.Builtins.@isinstance(__exception.__Value, Exception)).__Value) {
return value;
} else {
throw;
}
}
"""
assert_equal(expected, cs.dumps(transform(node)))
def nope_exception_is_extracted_from_dotnet_exception_if_exception_is_named_in_catch(self):
node = cc.try_(
[],
handlers=[
cc.except_(cc.ref("Exception"), cc.ref("error"), [
cc.ret(cc.ref("error"))
])
]
)
expected = """try {
} catch (__Nope.Internals.@__NopeException __exception) {
if ((__Nope.Builtins.@isinstance(__exception.__Value, Exception)).__Value) {
error = __exception.__Value;
return error;
} else {
throw;
}
}
"""
assert_equal(expected, cs.dumps(transform(node)))
def test_transform_function_expression_with_body():
_assert_transform(
cc.function_expression([], [cc.ret(cc.ref("x"))]),
js.function_expression([], [js.ret(js.ref("x"))]),
)
def test_arguments_are_transformed(self):
_assert_transform(
nodes.func("f", nodes.args([nodes.arg("value")]), [nodes.ret(nodes.ref("value"))], type=None),
cc.func("f", [cc.arg("value")], [cc.ret(cc.ref("value"))]),
)
def test_transform_return_statement_transforms_value(self):
_assert_transform(
nodes.ret(nodes.ref("value")),
cc.ret(cc.ref("value"))
)
def test_transform_return():
_assert_transform(
cc.ret(cc.ref("x")),
js.ret(js.ref("x"))
)
