--- a/Plugins/CheckerPlugins/CodeStyleChecker/McCabeChecker.py Sat Mar 25 17:18:12 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,127 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright (c) 2015 - 2017 Detlev Offenbach <detlev@die-offenbachs.de>
-#
-
-"""
-Module implementing a checker for code complexity.
-"""
-
-import sys
-import ast
-
-from mccabe import PathGraphingAstVisitor
-
-
-class McCabeChecker(object):
- """
- Class implementing a checker for code complexity iaw. McCabe.
- """
- Codes = [
- "C101",
-
- "C901",
- ]
-
- def __init__(self, source, filename, select, ignore, maxComplexity=10):
- """
- Constructor
-
- @param source source code to be checked
- @type list of str
- @param filename name of the source file
- @type str
- @param select list of selected codes
- @type list of str
- @param ignore list of codes to be ignored
- @type list of str
- @param maxComplexity maximum allowed complexity value
- @type int
- """
- self.__filename = filename
- self.__source = source[:]
- self.__maxComplexity = maxComplexity
- self.__select = tuple(select)
- self.__ignore = ('',) if select else tuple(ignore)
-
- # statistics counters
- self.counters = {}
-
- # collection of detected errors
- self.errors = []
-
- def __error(self, lineNumber, offset, code, *args):
- """
- Private method to record an issue.
-
- @param lineNumber line number of the issue
- @type int
- @param offset position within line of the issue
- @type int
- @param code message code
- @type str
- @param args arguments for the message
- @type list
- """
- if code in self.counters:
- self.counters[code] += 1
- else:
- self.counters[code] = 1
-
- if code:
- # record the issue with one based line number
- self.errors.append(
- (self.__filename, lineNumber, offset, (code, args)))
-
- def __reportInvalidSyntax(self):
- """
- Private method to report a syntax error.
- """
- exc_type, exc = sys.exc_info()[:2]
- if len(exc.args) > 1:
- offset = exc.args[1]
- if len(offset) > 2:
- offset = offset[1:3]
- else:
- offset = (1, 0)
- self.__error(offset[0] - 1, offset[1] or 0,
- 'C901', exc_type.__name__, exc.args[0])
-
- def __ignoreCode(self, code):
- """
- Private method to check if the error code should be ignored.
-
- @param code message code to check for (string)
- @return flag indicating to ignore the given code (boolean)
- """
- return (code.startswith(self.__ignore) and
- not code.startswith(self.__select))
-
- def run(self):
- """
- Public method to check the given source for code complexity.
- """
- if not self.__filename or not self.__source:
- # don't do anything, if essential data is missing
- return
-
- if self.__ignoreCode("C101"):
- # don't do anything, if this should be ignored
- return
-
- try:
- tree = compile(''.join(self.__source), self.__filename, 'exec',
- ast.PyCF_ONLY_AST)
- except (SyntaxError, TypeError):
- self.__reportInvalidSyntax()
- return
-
- visitor = PathGraphingAstVisitor()
- visitor.preorder(tree, visitor)
- for graph in visitor.graphs.values():
- if graph.complexity() > self.__maxComplexity:
- self.__error(graph.lineno, 0, "C101",
- graph.entity, graph.complexity())
-
-#
-# eflag: noqa = M702
