| Tor Norbye | 1aa2e09 | 2014-08-20 17:01:23 -0700 | [diff] [blame^] | 1 | '''For debug purpose we are replacing actual builtin property by the debug property |
| 2 | ''' |
| 3 | from pydevd_comm import GetGlobalDebugger |
| 4 | from pydevd_constants import * #@UnusedWildImport |
| 5 | import pydevd_tracing |
| 6 | |
| 7 | #======================================================================================================================= |
| 8 | # replace_builtin_property |
| 9 | #======================================================================================================================= |
| 10 | def replace_builtin_property(new_property=None): |
| 11 | if new_property is None: |
| 12 | new_property = DebugProperty |
| 13 | original = property |
| 14 | if not IS_PY3K: |
| 15 | try: |
| 16 | import __builtin__ |
| 17 | __builtin__.__dict__['property'] = new_property |
| 18 | except: |
| 19 | if DebugInfoHolder.DEBUG_TRACE_LEVEL: |
| 20 | import traceback;traceback.print_exc() #@Reimport |
| 21 | else: |
| 22 | try: |
| 23 | import builtins #Python 3.0 does not have the __builtin__ module @UnresolvedImport |
| 24 | builtins.__dict__['property'] = new_property |
| 25 | except: |
| 26 | if DebugInfoHolder.DEBUG_TRACE_LEVEL: |
| 27 | import traceback;traceback.print_exc() #@Reimport |
| 28 | return original |
| 29 | |
| 30 | |
| 31 | #======================================================================================================================= |
| 32 | # DebugProperty |
| 33 | #======================================================================================================================= |
| 34 | class DebugProperty(object): |
| 35 | """A custom property which allows python property to get |
| 36 | controlled by the debugger and selectively disable/re-enable |
| 37 | the tracing. |
| 38 | """ |
| 39 | |
| 40 | |
| 41 | def __init__(self, fget=None, fset=None, fdel=None, doc=None): |
| 42 | self.fget = fget |
| 43 | self.fset = fset |
| 44 | self.fdel = fdel |
| 45 | self.__doc__ = doc |
| 46 | |
| 47 | |
| 48 | def __get__(self, obj, objtype=None): |
| 49 | if obj is None: |
| 50 | return self |
| 51 | global_debugger = GetGlobalDebugger() |
| 52 | try: |
| 53 | if global_debugger is not None and global_debugger.disable_property_getter_trace: |
| 54 | pydevd_tracing.SetTrace(None) |
| 55 | if self.fget is None: |
| 56 | raise AttributeError("unreadable attribute") |
| 57 | return self.fget(obj) |
| 58 | finally: |
| 59 | if global_debugger is not None: |
| 60 | pydevd_tracing.SetTrace(global_debugger.trace_dispatch) |
| 61 | |
| 62 | |
| 63 | def __set__(self, obj, value): |
| 64 | global_debugger = GetGlobalDebugger() |
| 65 | try: |
| 66 | if global_debugger is not None and global_debugger.disable_property_setter_trace: |
| 67 | pydevd_tracing.SetTrace(None) |
| 68 | if self.fset is None: |
| 69 | raise AttributeError("can't set attribute") |
| 70 | self.fset(obj, value) |
| 71 | finally: |
| 72 | if global_debugger is not None: |
| 73 | pydevd_tracing.SetTrace(global_debugger.trace_dispatch) |
| 74 | |
| 75 | |
| 76 | def __delete__(self, obj): |
| 77 | global_debugger = GetGlobalDebugger() |
| 78 | try: |
| 79 | if global_debugger is not None and global_debugger.disable_property_deleter_trace: |
| 80 | pydevd_tracing.SetTrace(None) |
| 81 | if self.fdel is None: |
| 82 | raise AttributeError("can't delete attribute") |
| 83 | self.fdel(obj) |
| 84 | finally: |
| 85 | if global_debugger is not None: |
| 86 | pydevd_tracing.SetTrace(global_debugger.trace_dispatch) |
| 87 | |
| 88 | |
| 89 | def getter(self, fget): |
| 90 | """Overriding getter decorator for the property |
| 91 | """ |
| 92 | self.fget = fget |
| 93 | return self |
| 94 | |
| 95 | |
| 96 | def setter(self, fset): |
| 97 | """Overriding setter decorator for the property |
| 98 | """ |
| 99 | self.fset = fset |
| 100 | return self |
| 101 | |
| 102 | |
| 103 | def deleter(self, fdel): |
| 104 | """Overriding deleter decorator for the property |
| 105 | """ |
| 106 | self.fdel = fdel |
| 107 | return self |
| 108 | |