def init_method_is_called_if_present(self):
node = cc.class_("A", methods=[
cc.func("__init__", [cc.arg("self"), cc.arg("value")], [
cc.expression_statement(cc.call(cc.ref("print"), [cc.ref("value")]))
])
], body=[])
expected_aux = """internal class __A {
internal dynamic __init__;
}
"""
expected = """A = new
{
__call__ = ((System.Func<dynamic, dynamic>)((dynamic __value) =>
{
dynamic __self = null;
__self = new __A {
__init__ = ((System.Func<dynamic, dynamic>)((dynamic value) =>
{
dynamic self = __self;
print(value);
})),
};
__self.__init__(__value);
return __self;
})),
};
"""
transformer = _create_transformer()
assert_equal(expected, cs.dumps(transformer.transform(node)))
assert_equal(expected_aux, cs.dumps(transformer.aux()))
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 $exception0;
}
}
}
}
""",
)
def test_transform_raise_without_exception_value():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
handlers=[
cc.except_(cc.ref("AssertionError"), cc.ref("error"), [cc.raise_()]),
],
),
"""
try {
return x;
} catch ($exception0) {
if ($exception0.$nopeException === $nope.undefined) {
throw $exception0;
} else {
if ($nope.builtins.isinstance($exception0.$nopeException, AssertionError)) {
var error = $exception0.$nopeException;
throw $exception0;
} else {
throw $exception0;
}
}
}
""",
)
def test_transform_compound_assignments(self):
_assert_transform(
nodes.assign(["x", "y"], nodes.ref("z")),
cc.statements([
cc.declare("__nope_u_tmp0", cc.ref("z")),
cc.assign(cc.ref("x"), cc.ref("__nope_u_tmp0")),
cc.assign(cc.ref("y"), cc.ref("__nope_u_tmp0")),
]),
)
def test_transform_boolean_or(self):
_assert_transform(
nodes.bool_or(nodes.ref("x"), nodes.ref("y")),
cc.ternary_conditional(
cc.call(cc.builtin("bool"), [cc.ref("x")]),
cc.ref("x"),
cc.ref("y")
),
)
def test_transform_call_with_positional_arguments(self):
func_node = nodes.ref("f")
type_lookup = [
(func_node, types.func([types.str_type], types.none_type))
]
_assert_transform(
nodes.call(func_node, [nodes.ref("x")]),
cc.call(cc.ref("f"), [cc.ref("x")]),
type_lookup=type_lookup,
)
def test_import_of_module_in_package_assigns_values_for_both_package_and_module(self):
_assert_transform(
nodes.import_([
nodes.import_alias("os.path", None),
]),
cc.statements([
cc.assign(cc.ref("os"), cc.module_ref(["os"])),
cc.assign(cc.attr(cc.ref("os"), "path"), cc.module_ref(["os", "path"])),
])
)
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_multiple_imported_names_in_one_statement_generates_multiple_assignments(self):
_assert_transform(
nodes.import_from(["."], [
nodes.import_alias("x", None),
nodes.import_alias("y", None),
]),
cc.statements([
cc.assign(cc.ref("x"), cc.attr(cc.module_ref(["."]), "x")),
cc.assign(cc.ref("y"), cc.attr(cc.module_ref(["."]), "y")),
]),
)
def test_import_multiple_values_in_single_import_statement(self):
_assert_transform(
nodes.import_([
nodes.import_alias("os", None),
nodes.import_alias("sys", None)
]),
cc.statements([
cc.assign(cc.ref("os"), cc.module_ref(["os"])),
cc.assign(cc.ref("sys"), cc.module_ref(["sys"])),
])
)
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_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 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_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_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_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_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 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_transform_module_with_exports():
_assert_transform(
cc.module([
cc.declare("__all__"),
cc.declare("x"),
cc.assign(cc.ref("__all__"), cc.list_literal([cc.str_literal("x")])),
cc.assign(cc.ref("x"), cc.none)
], exported_names=["x"]),
"""
var __all__;
var x;
__all__ = ["x"];
x = null;
$exports.x = x;
"""
)
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_transform_call_with_keyword_arguments(self):
func_node = nodes.ref("f")
type_lookup = [
(func_node, types.func(
[
types.func_arg("first", types.str_type),
types.func_arg("second", types.str_type),
],
types.none_type
))
]
_assert_transform(
nodes.call(func_node, [], {"first": nodes.ref("x"), "second": nodes.ref("y")}),
cc.call(cc.ref("f"), [cc.ref("x"), cc.ref("y")]),
type_lookup=type_lookup,
)
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 test_statements_in_module_body_are_transformed(self):
module_node = nodes.module([nodes.expression_statement(nodes.ref("value"))], is_executable=True)
module_type = types.module("blah", [])
_assert_transform(
module_node,
cc.module([cc.expression_statement(cc.ref("value"))], is_executable=True, exported_names=[]),
type_lookup=[(module_node, module_type)]
)
def test_importing_module_from_package_references_module_directly(self):
module_resolver = FakeModuleResolver({
(("x", ), "y"): ResolvedImport(["x", "y"], _stub_module, None)
})
_assert_transform(
nodes.import_from(["x"], [nodes.import_alias("y", None)]),
cc.assign(cc.ref("y"), cc.module_ref(["x", "y"])),
module_resolver=module_resolver,
)
def test_transform_try_with_empty_finally_body():
_assert_transform(
cc.try_(
[cc.ret(cc.ref("x"))],
finally_body=[],
),
"""
return x;
""",
)
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 handlers_are_converted_to_if_statements_in_order(self):
node = cc.try_(
[],
handlers=[
cc.except_(cc.ref("AssertionError"), None, []),
cc.except_(cc.ref("Exception"), None, []),
]
)
expected = """try {
} catch (__Nope.Internals.@__NopeException __exception) {
if ((__Nope.Builtins.@isinstance(__exception.__Value, AssertionError)).__Value) {
} else {
if ((__Nope.Builtins.@isinstance(__exception.__Value, Exception)).__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)))
