| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 |
- '''
- Created on 26/06/2012
- @author: konstaa
- '''
- import core.api
- import re
- class Plugin(core.api.Plugin, core.api.Child, core.api.IConfigurable):
-
- def declare_configuration(self, parser):
- parser.add_option("--std.code.complexity.on", action="store_true", default=False,
- help="Enables processing of complexity metrics: cyclomatic by McCabe [default: %default]")
-
- def configure(self, options):
- self.is_active = options.__dict__['std.code.complexity.on']
-
- def initialize(self):
- if self.is_active == True:
- namespace = self.get_plugin_loader().get_database_loader().create_namespace(self.get_name(), support_regions = True)
- namespace.add_field('cyclomatic', int)
- core.api.subscribe_by_parents_name('std.code.cpp', self, 'callback_cpp')
- # cyclomatic complexity pattern
- pattern = re.compile(r'''([^0-9A-Za-z_]((if)|(case)|(for)|(while))[^0-9A-Za-z_])|[&][&]|[|][|]|[?]''')
- def callback_cpp(self, parent, data):
-
- text = None
- for (ind, region) in enumerate(data.iterate_regions(filter_group=data.get_region_types().FUNCTION)):
- # cyclomatic complexity
- if ind == 0 and region.get_data(self.get_name(), 'cyclomatic') != None:
- return # data is available in first from cloned database, skip collection
- if text == None: # lazy loading for performance benefits
- text = data.get_content(exclude = data.get_marker_types().ALL_EXCEPT_CODE)
-
- count = 0
- start_pos = region.get_offset_begin()
- for sub_id in region.iterate_subregion_ids():
- # exclude sub regions, like enclosed classes
- count += len(self.pattern.findall(text, start_pos, data.get_region(sub_id).get_offset_begin()))
- start_pos = data.get_region(sub_id).get_offset_end()
- count += len(self.pattern.findall(text, start_pos, region.get_offset_end()))
- region.set_data(self.get_name(), 'cyclomatic', count)
|
