diff -r 3fc8dfeb6ebe -r b99e7fd55fd3 src/eric7/Plugins/CheckerPlugins/CodeStyleChecker/Simplify/SimplifyChecker.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/Plugins/CheckerPlugins/CodeStyleChecker/Simplify/SimplifyChecker.py Thu Jul 07 11:23:56 2022 +0200
@@ -0,0 +1,148 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2021 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the checker for simplifying Python code.
+"""
+
+import ast
+import copy
+
+from .SimplifyNodeVisitor import SimplifyNodeVisitor
+
+
+class SimplifyChecker:
+ """
+ Class implementing a checker for to help simplifying Python code.
+ """
+ Codes = [
+ # Python-specifics
+ "Y101", "Y102", "Y103", "Y104", "Y105", "Y106", "Y107", "Y108",
+ "Y109", "Y110", "Y111", "Y112", "Y113", "Y114", "Y115", "Y116",
+ "Y117", "Y118", "Y119", "Y120", "Y121", "Y122",
+
+ # Python-specifics not part of flake8-simplify
+ "Y181", "Y182",
+
+ # Comparations
+ "Y201", "Y202", "Y203", "Y204", "Y205", "Y206", "Y207", "Y208",
+ "Y211", "Y212", "Y213",
+ "Y221", "Y222", "Y223", "Y224",
+
+ # Opinionated
+ "Y301",
+
+ # General Code Style
+ "Y401", "Y402",
+ ]
+
+ def __init__(self, source, filename, tree, selected, ignored, expected,
+ repeat):
+ """
+ Constructor
+
+ @param source source code to be checked
+ @type list of str
+ @param filename name of the source file
+ @type str
+ @param tree AST tree of the source code
+ @type ast.Module
+ @param selected list of selected codes
+ @type list of str
+ @param ignored list of codes to be ignored
+ @type list of str
+ @param expected list of expected codes
+ @type list of str
+ @param repeat flag indicating to report each occurrence of a code
+ @type bool
+ """
+ self.__select = tuple(selected)
+ self.__ignore = ('',) if selected else tuple(ignored)
+ self.__expected = expected[:]
+ self.__repeat = repeat
+ self.__filename = filename
+ self.__source = source[:]
+ self.__tree = copy.deepcopy(tree)
+
+ # statistics counters
+ self.counters = {}
+
+ # collection of detected errors
+ self.errors = []
+
+ self.__checkCodes = (code for code in self.Codes
+ if not self.__ignoreCode(code))
+
+ def __ignoreCode(self, code):
+ """
+ Private method to check if the message code should be ignored.
+
+ @param code message code to check for
+ @type str
+ @return flag indicating to ignore the given code
+ @rtype bool
+ """
+ return (code.startswith(self.__ignore) and
+ not code.startswith(self.__select))
+
+ 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 self.__ignoreCode(code):
+ return
+
+ # record the issue with one based line number
+ errorInfo = {
+ "file": self.__filename,
+ "line": lineNumber + 1,
+ "offset": offset,
+ "code": code,
+ "args": args,
+ }
+
+ if errorInfo not in self.errors:
+ # this issue was not seen before
+ if code in self.counters:
+ self.counters[code] += 1
+ else:
+ self.counters[code] = 1
+
+ # Don't care about expected codes
+ if code in self.__expected:
+ return
+
+ if code and (self.counters[code] == 1 or self.__repeat):
+ self.errors.append(errorInfo)
+
+ def run(self):
+ """
+ Public method to check the given source against functions
+ to be replaced by 'pathlib' equivalents.
+ """
+ if not self.__filename:
+ # don't do anything, if essential data is missing
+ return
+
+ if not self.__checkCodes:
+ # don't do anything, if no codes were selected
+ return
+
+ # Add parent information
+ for node in ast.walk(self.__tree):
+ for child in ast.iter_child_nodes(node):
+ child.parent = node # type: ignore
+
+ visitor = SimplifyNodeVisitor(self.__error)
+ visitor.visit(self.__tree)
