def _calculate_patterns_and_metrics(
file_path: str,
is_decomposition_requested: bool) -> List[Dict[str, Any]]:
results: List[Dict[str, Any]] = []
config = Config.get_patterns_config()
patterns_info = [
pattern_info for pattern_info in config["patterns"]
if pattern_info["code"] not in config["patterns_exclude"]
]
metrics_info = [
metric_info for metric_info in config["metrics"]
if metric_info["code"] not in config["metrics_exclude"]
]
ast = AST.build_from_javalang(build_ast(file_path))
classes_ast = [
ast.get_subtree(node) for node in ast.get_root().types
if node.node_type == ASTNodeType.CLASS_DECLARATION
]
for class_ast in classes_ast:
components = (decompose_java_class(
class_ast, "strong", ignore_getters=True, ignore_setters=True)
if is_decomposition_requested else [class_ast])
for index, component_ast in enumerate(components):
calculation_result = {
"filepath": file_path,
"class_name": class_ast.get_root().name,
"component_index": index,
}
for pattern_info in patterns_info:
try:
pattern = pattern_info["make"]()
pattern_result = pattern.value(component_ast)
calculation_result[pattern_info["code"]] = len(
pattern_result)
calculation_result["lines_" +
pattern_info["code"]] = pattern_result
except Exception as cause:
raise FileProcessingError(file_path, pattern_info["name"],
cause)
for metric_info in metrics_info:
try:
metric = metric_info["make"]()
metric_result = metric.value(component_ast)
calculation_result[metric_info["code"]] = metric_result
except Exception as cause:
raise FileProcessingError(file_path, metric_info["name"],
cause)
results.append(calculation_result)
return results
def calculate_patterns_and_metrics_with_decomposition(file_path: str, args):
error_exc = None
patterns_to_suppress = args.suppress
results_for_components = []
try:
config = Config.get_patterns_config()
patterns_info = [
pattern_info for pattern_info in config["patterns"]
if pattern_info["code"] not in config["patterns_exclude"]
]
metrics_info = [
metric_info for metric_info in config["metrics"]
if metric_info["code"] not in config["metrics_exclude"]
]
ast = AST.build_from_javalang(build_ast(file_path))
classes_ast = [
ast.get_subtree(node) for node in ast.get_root().types
if node.node_type == ASTNodeType.CLASS_DECLARATION
]
for class_ast in classes_ast:
for index, component_ast in enumerate(
decompose_java_class(class_ast, "strong")):
result_for_component: Dict[Any, Any] = {}
code_lines_dict: Dict[Any, Any] = OrderedDict()
input_params = OrderedDict() # type: ignore
for pattern_info in patterns_info:
if pattern_info['code'] in config['patterns_exclude']:
continue
if pattern_info['code'] in patterns_to_suppress:
input_params[pattern_info["code"]] = 0
code_lines_dict["lines_" + pattern_info["code"]] = []
else:
pattern = pattern_info["make"]()
pattern_result = pattern.value(component_ast)
input_params[pattern_info["code"]] = len(
pattern_result)
code_lines_dict["lines_" +
pattern_info["code"]] = pattern_result
for metric_info in metrics_info:
metric = metric_info["make"]()
metric_result = metric.value(component_ast)
input_params[metric_info["code"]] = metric_result
result_for_component['code_lines_dict'] = code_lines_dict
result_for_component['input_params'] = input_params
result_for_component['index'] = index
results_for_components.append(result_for_component)
except Exception as ex:
error_exc = ex
return results_for_components, error_exc
def __decompose_with_setter_functionality(self, ignore_getters=False, ignore_setters=False):
file = str(Path(self.cur_dir, 'LottieImageAsset.java'))
ast = AST.build_from_javalang(build_ast(file))
classes_ast = [
ast.get_subtree(node)
for node in ast.get_root().types
if node.node_type == ASTNodeType.CLASS_DECLARATION
]
components = list(decompose_java_class(
classes_ast[0],
"strong",
ignore_setters=ignore_setters,
ignore_getters=ignore_getters))
function_names = flatten([
[x.name for x in list(c.get_proxy_nodes(ASTNodeType.METHOD_DECLARATION))]
for c in components])
return function_names
def test_ncss(self):
test_data_folder = self.cur_dir / "ncss"
for filepath in test_data_folder.glob("*.java"):
with self.subTest(f"Testing decomposition of {filepath}"):
ast = AST.build_from_javalang(build_ast(filepath))
classes_ast = [
ast.get_subtree(node)
for node in ast.get_root().types
if node.node_type == ASTNodeType.CLASS_DECLARATION
]
ncss_metric = NCSSMetric()
# NCSS of a class may not be equal to sum of ncss of methods and fields
# due to presence of nested classes. To bypass it we calculate NCSS only
# of methods and fields.
methods_ncss = 0
fields_ncss = 0
components_ncss = 0
components_qty = 0
for class_ast in classes_ast:
class_declaration = class_ast.get_root()
for method in class_declaration.methods:
methods_ncss += ncss_metric.value(class_ast.get_subtree(method))
for field in class_declaration.fields:
fields_ncss += ncss_metric.value(class_ast.get_subtree(field))
for component in decompose_java_class(class_ast, "strong"):
components_qty += 1
components_ncss += ncss_metric.value(component)
# Each component has a CLASS_DECLARATION node. It increase NCSS of each component by 1.
# To achieve equality we add number of components to the sum of NCSS of just methods and fields.
self.assertEqual(methods_ncss + fields_ncss + components_qty, components_ncss)
def test_weak_decomposition(self):
class_ast = self._get_class_ast("MethodUseOtherMethodExample.java",
"MethodUseOtherMethod")
class_components = decompose_java_class(class_ast, "weak")
self.assertEqual(len(class_components), 5)
