diff -r 4e8b98454baa -r 800c432b34c8 eric7/DebugClients/Python/DebugVariables.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric7/DebugClients/Python/DebugVariables.py Sat May 15 18:45:04 2021 +0200
@@ -0,0 +1,714 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2016 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing classes and functions to dump variable contents.
+"""
+
+import contextlib
+
+from DebugConfig import ConfigQtNames, ConfigKnownQtTypes, BatchSize
+
+#
+# This code was inspired by pydevd.
+#
+
+############################################################
+## Classes implementing resolvers for various compund types
+############################################################
+
+
+class BaseResolver:
+ """
+ Base class of the resolver class tree.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type any
+ @param attribute name of the attribute to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ return getattr(var, attribute, None)
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @return dictionary containing the variable attributes
+ @rtype dict
+ """
+ names = dir(var)
+ if not names and hasattr(var, "__members__"):
+ names = var.__members__
+
+ d = {}
+ for name in names:
+ with contextlib.suppress(Exception):
+ attribute = getattr(var, name)
+ d[name] = attribute
+
+ return d
+
+
+############################################################
+## Default Resolver
+############################################################
+
+
+class DefaultResolver(BaseResolver):
+ """
+ Class used to resolve the default way.
+ """
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ names = dir(var)
+ if not names and hasattr(var, "__members__"):
+ names = var.__members__
+
+ d = {}
+ for name in names:
+ with contextlib.suppress(Exception):
+ attribute = getattr(var, name)
+ d[name] = attribute
+
+ yield -1, d
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for Dictionaries
+############################################################
+
+
+class DictResolver(BaseResolver):
+ """
+ Class used to resolve from a dictionary.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type dict
+ @param attribute name of the attribute to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ if " (ID:" not in attribute:
+ try:
+ return var[attribute]
+ except Exception:
+ return getattr(var, attribute, None)
+
+ expectedID = int(attribute.split(" (ID:")[-1][:-1])
+ for key, value in var.items():
+ if id(key) == expectedID:
+ return value
+
+ return None
+
+ def keyToStr(self, key):
+ """
+ Public method to get a string representation for a key.
+
+ @param key key to be converted
+ @type any
+ @return string representation of the given key
+ @rtype str
+ """
+ if isinstance(key, str):
+ key = repr(key)
+ # Special handling for bytes object
+ # Raw and f-Strings are always converted to str
+ if key[0] == 'b':
+ key = key[1:]
+
+ return key # __IGNORE_WARNING_M834__
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ allItems = list(var.items())
+ try:
+ # Fast path: all items from same type
+ allItems.sort(key=lambda x: x[0])
+ except TypeError:
+ # Slow path: only sort items with same type (Py3 only)
+ allItems.sort(key=lambda x: (str(x[0]), x[0]))
+
+ for key, value in allItems:
+ key = "{0} (ID:{1})".format(self.keyToStr(key), id(key))
+ d[key] = value
+ count += 1
+ if count >= BatchSize:
+ yield start, d
+ start += count
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ d = super().getDictionary(var)
+ yield -1, d
+
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for Lists and Tuples
+############################################################
+
+
+class ListResolver(BaseResolver):
+ """
+ Class used to resolve from a tuple or list.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type tuple or list
+ @param attribute name of the attribute to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ try:
+ return var[int(attribute)]
+ except Exception:
+ return getattr(var, attribute, None)
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ for idx, value in enumerate(var):
+ d[idx] = value
+ count += 1
+ if count >= BatchSize:
+ yield start, d
+ start = idx + 1
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ d = super().getDictionary(var)
+ yield -1, d
+
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for dict_items, dict_keys and dict_values
+############################################################
+
+
+class DictViewResolver(ListResolver):
+ """
+ Class used to resolve from dict views.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type tuple or list
+ @param attribute id of the value to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ return super().resolve(list(var), attribute)
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @return dictionary containing the variable attributes
+ @rtype dict
+ """
+ return super().getDictionary(list(var))
+
+
+############################################################
+## Resolver for Sets and Frozensets
+############################################################
+
+
+class SetResolver(BaseResolver):
+ """
+ Class used to resolve from a set or frozenset.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type tuple or list
+ @param attribute id of the value to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ if attribute.startswith("'ID: "):
+ attribute = attribute.split(None, 1)[1][:-1]
+ try:
+ attribute = int(attribute)
+ except Exception:
+ return getattr(var, attribute, None)
+
+ for v in var:
+ if id(v) == attribute:
+ return v
+
+ return None
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ for value in var:
+ count += 1
+ d["'ID: {0}'".format(id(value))] = value
+ if count >= BatchSize:
+ yield start, d
+ start += count
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ additionals = super().getDictionary(var)
+ yield -1, additionals
+
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for Numpy Arrays
+############################################################
+
+
+class NdArrayResolver(BaseResolver):
+ """
+ Class used to resolve from numpy ndarray including some meta data.
+ """
+ def __isNumeric(self, arr):
+ """
+ Private method to check, if an array is of a numeric type.
+
+ @param arr array to check
+ @type ndarray
+ @return flag indicating a numeric array
+ @rtype bool
+ """
+ try:
+ return arr.dtype.kind in 'biufc'
+ except AttributeError:
+ return False
+
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type tuple or list
+ @param attribute id of the value to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ if attribute == 'min':
+ if self.__isNumeric(var):
+ return var.min()
+ else:
+ return None
+
+ if attribute == 'max':
+ if self.__isNumeric(var):
+ return var.max()
+ else:
+ return None
+
+ if attribute == 'mean':
+ if self.__isNumeric(var):
+ return var.mean()
+ else:
+ return None
+
+ try:
+ return var[int(attribute)]
+ except Exception:
+ return getattr(var, attribute, None)
+
+ return None
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ try:
+ len(var) # Check if it's an unsized object, e.g. np.ndarray(())
+ allItems = var.tolist()
+ except TypeError: # TypeError: len() of unsized object
+ allItems = []
+
+ for idx, value in enumerate(allItems):
+ d[str(idx)] = value
+ count += 1
+ if count >= BatchSize:
+ yield start, d
+ start += count
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ d = super().getDictionary(var)
+
+ if var.size > 1024 * 1024:
+ d['min'] = (
+ 'ndarray too big, calculating min would slow down debugging')
+ d['max'] = (
+ 'ndarray too big, calculating max would slow down debugging')
+ d['mean'] = (
+ 'ndarray too big, calculating mean would slow down debugging')
+ elif self.__isNumeric(var):
+ if var.size == 0:
+ d['min'] = 'empty array'
+ d['max'] = 'empty array'
+ d['mean'] = 'empty array'
+ else:
+ d['min'] = var.min()
+ d['max'] = var.max()
+ d['mean'] = var.mean()
+ else:
+ d['min'] = 'not a numeric object'
+ d['max'] = 'not a numeric object'
+ d['mean'] = 'not a numeric object'
+
+ yield -1, d
+
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for Django Multi Value Dictionaries
+############################################################
+
+
+class MultiValueDictResolver(DictResolver):
+ """
+ Class used to resolve from Django multi value dictionaries.
+ """
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type dict
+ @param attribute name of the attribute to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ if " (ID:" not in attribute:
+ try:
+ return var[attribute]
+ except Exception:
+ return getattr(var, attribute, None)
+
+ expectedID = int(attribute.split(" (ID:")[-1][:-1])
+ for key in var:
+ if id(key) == expectedID:
+ return var.getlist(key)
+
+ return None
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ allKeys = list(var.keys())
+ try:
+ # Fast path: all items from same type
+ allKeys.sort()
+ except TypeError:
+ # Slow path: only sort items with same type (Py3 only)
+ allKeys.sort(key=lambda x: (str(x), x))
+
+ for key in allKeys:
+ dkey = "{0} (ID:{1})".format(self.keyToStr(key), id(key))
+ d[dkey] = var.getlist(key)
+ count += 1
+ if count >= BatchSize:
+ yield start, d
+ start += count
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ d = super().getDictionary(var)
+ yield -1, d
+
+ while True:
+ yield -2, {}
+
+
+############################################################
+## Resolver for array.array
+############################################################
+
+
+class ArrayResolver(BaseResolver):
+ """
+ Class used to resolve from array.array including some meta data.
+ """
+ TypeCodeMap = {
+ "b": "int (signed char)",
+ "B": "int (unsigned char)",
+ "u": "Unicode character (Py_UNICODE)",
+ "h": "int (signed short)",
+ "H": "int (unsigned short)",
+ "i": "int (signed int)",
+ "I": "int (unsigned int)",
+ "l": "int (signed long)",
+ "L": "int (unsigned long)",
+ "q": "int (signed long long)",
+ "Q": "int (unsigned long long)",
+ "f": "float (float)",
+ "d": "float (double)",
+ }
+
+ def resolve(self, var, attribute):
+ """
+ Public method to get an attribute from a variable.
+
+ @param var variable to extract an attribute or value from
+ @type tuple or list
+ @param attribute id of the value to extract
+ @type str
+ @return value of the attribute
+ @rtype any
+ """
+ try:
+ return var[int(attribute)]
+ except Exception:
+ return getattr(var, attribute, None)
+
+ return None
+
+ def getDictionary(self, var):
+ """
+ Public method to get the attributes of a variable as a dictionary.
+
+ @param var variable to be converted
+ @type any
+ @yield tuple containing the batch start index and a dictionary
+ containing the variable attributes
+ @ytype tuple of (int, dict)
+ """
+ d = {}
+ start = count = 0
+ allItems = var.tolist()
+
+ for idx, value in enumerate(allItems):
+ d[str(idx)] = value
+ count += 1
+ if count >= BatchSize:
+ yield start, d
+ start += count
+ count = 0
+ d = {}
+
+ if d:
+ yield start, d
+
+ # in case it has additional fields
+ d = super().getDictionary(var)
+
+ # Special data for array type: convert typecode to readable text
+ d['type'] = self.TypeCodeMap.get(var.typecode, 'illegal type')
+
+ yield -1, d
+
+ while True:
+ yield -2, {}
+
+
+defaultResolver = DefaultResolver()
+dictResolver = DictResolver()
+listResolver = ListResolver()
+dictViewResolver = DictViewResolver()
+setResolver = SetResolver()
+ndarrayResolver = NdArrayResolver()
+multiValueDictResolver = MultiValueDictResolver()
+arrayResolver = ArrayResolver()
+
+############################################################
+## Methods to determine the type of a variable and the
+## resolver class to use
+############################################################
+
+_TypeMap = None
+
+
+def _initTypeMap():
+ """
+ Protected function to initialize the type map.
+ """
+ global _TypeMap
+
+ _TypeMap = [
+ (type(None), None,),
+ (int, None),
+ (float, None),
+ (complex, None),
+ (str, None),
+ (tuple, listResolver),
+ (list, listResolver),
+ (dict, dictResolver),
+ (set, setResolver),
+ (frozenset, setResolver),
+ ]
+
+ with contextlib.suppress(Exception):
+ _TypeMap.append((long, None)) # __IGNORE_WARNING__
+
+ with contextlib.suppress(ImportError):
+ import array
+ _TypeMap.append((array.array, arrayResolver))
+ # array.array may not be available
+
+ with contextlib.suppress(ImportError):
+ import numpy
+ _TypeMap.append((numpy.ndarray, ndarrayResolver))
+ # numpy may not be installed
+
+ with contextlib.suppress(ImportError):
+ from django.utils.datastructures import MultiValueDict
+ # it should go before dict
+ _TypeMap.insert(0, (MultiValueDict, multiValueDictResolver))
+ # django may not be installed
+
+ with contextlib.suppress(ImportError):
+ from collections.abc import ItemsView, KeysView, ValuesView
+ _TypeMap.append((ItemsView, dictViewResolver))
+ _TypeMap.append((KeysView, dictViewResolver))
+ _TypeMap.append((ValuesView, dictViewResolver))
+ # not available on all Python versions
+
+
+def getType(obj):
+ """
+ Public method to get the type information for an object.
+
+ @param obj object to get type information for
+ @type any
+ @return tuple containing the type name, type string and resolver
+ @rtype tuple of str, str, BaseResolver
+ """
+ typeObject = type(obj)
+ typeName = typeObject.__name__
+ # Between PyQt and PySide the returned type is different (class vs. type)
+ typeStr = str(typeObject).split(' ', 1)[-1]
+ typeStr = typeStr[1:-2]
+
+ if (
+ typeStr.startswith(ConfigQtNames) and
+ typeStr.endswith(ConfigKnownQtTypes)
+ ):
+ resolver = None
+ else:
+ if _TypeMap is None:
+ _initTypeMap()
+
+ for typeData, resolver in _TypeMap: # __IGNORE_WARNING_M507__
+ if isinstance(obj, typeData):
+ break
+ else:
+ resolver = defaultResolver
+
+ return typeName, typeStr, resolver
+
+#
+# eflag: noqa = Y113
