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'''For debug purpose we are replacing actual builtin property by the debug property
'''
from pydevd_comm import GetGlobalDebugger
from pydevd_constants import * #@UnusedWildImport
import pydevd_tracing
#=======================================================================================================================
# replace_builtin_property
#=======================================================================================================================
def replace_builtin_property(new_property=None):
if new_property is None:
new_property = DebugProperty
original = property
if not IS_PY3K:
try:
import __builtin__
__builtin__.__dict__['property'] = new_property
except:
if DebugInfoHolder.DEBUG_TRACE_LEVEL:
import traceback;traceback.print_exc() #@Reimport
else:
try:
import builtins #Python 3.0 does not have the __builtin__ module @UnresolvedImport
builtins.__dict__['property'] = new_property
except:
if DebugInfoHolder.DEBUG_TRACE_LEVEL:
import traceback;traceback.print_exc() #@Reimport
return original
#=======================================================================================================================
# DebugProperty
#=======================================================================================================================
class DebugProperty(object):
"""A custom property which allows python property to get
controlled by the debugger and selectively disable/re-enable
the tracing.
"""
def __init__(self, fget=None, fset=None, fdel=None, doc=None):
self.fget = fget
self.fset = fset
self.fdel = fdel
self.__doc__ = doc
def __get__(self, obj, objtype=None):
if obj is None:
return self
global_debugger = GetGlobalDebugger()
try:
if global_debugger is not None and global_debugger.disable_property_getter_trace:
pydevd_tracing.SetTrace(None)
if self.fget is None:
raise AttributeError("unreadable attribute")
return self.fget(obj)
finally:
if global_debugger is not None:
pydevd_tracing.SetTrace(global_debugger.trace_dispatch)
def __set__(self, obj, value):
global_debugger = GetGlobalDebugger()
try:
if global_debugger is not None and global_debugger.disable_property_setter_trace:
pydevd_tracing.SetTrace(None)
if self.fset is None:
raise AttributeError("can't set attribute")
self.fset(obj, value)
finally:
if global_debugger is not None:
pydevd_tracing.SetTrace(global_debugger.trace_dispatch)
def __delete__(self, obj):
global_debugger = GetGlobalDebugger()
try:
if global_debugger is not None and global_debugger.disable_property_deleter_trace:
pydevd_tracing.SetTrace(None)
if self.fdel is None:
raise AttributeError("can't delete attribute")
self.fdel(obj)
finally:
if global_debugger is not None:
pydevd_tracing.SetTrace(global_debugger.trace_dispatch)
def getter(self, fget):
"""Overriding getter decorator for the property
"""
self.fget = fget
return self
def setter(self, fset):
"""Overriding setter decorator for the property
"""
self.fset = fset
return self
def deleter(self, fdel):
"""Overriding deleter decorator for the property
"""
self.fdel = fdel
return self
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