--- /dev/null
+# The MIT License (MIT)
+#
+# Copyright (c) 2016 Philippe Proulx <pproulx@efficios.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+from bt2 import native_bt, object, utils
+import bt2.field_types
+import collections.abc
+import bt2.values
+import bt2.event
+import copy
+import bt2
+
+
+class _EventClassAttributesIterator(collections.abc.Iterator):
+ def __init__(self, attributes):
+ self._attributes = attributes
+ self._at = 0
+
+ def __next__(self):
+ if self._at == len(self._attributes):
+ raise StopIteration
+
+ name = native_bt.ctf_event_class_get_attribute_name(self._attributes._event_class_ptr,
+ self._at)
+ utils._handle_ptr("cannot get event class object's attribute name")
+ self._at += 1
+ return name
+
+
+class _EventClassAttributes(collections.abc.MutableMapping):
+ def __init__(self, event_class_ptr):
+ self._event_class_ptr = event_class_ptr
+
+ def __getitem__(self, key):
+ utils._check_str(key)
+ value_ptr = native_bt.ctf_event_class_get_attribute_value_by_name(self._event_class_ptr,
+ key)
+
+ if value_ptr is None:
+ raise KeyError(key)
+
+ return bt2.values._create_from_ptr(value_ptr)
+
+ def __setitem__(self, key, value):
+ utils._check_str(key)
+ value = bt2.create_value(value)
+ ret = native_bt.ctf_event_class_set_attribute(self._event_class_ptr, key,
+ value._ptr)
+ utils._handle_ret(ret, "cannot set event class object's attribute")
+
+ def __delitem__(self, key):
+ raise NotImplementedError
+
+ def __len__(self):
+ count = native_bt.ctf_event_class_get_attribute_count(self._event_class_ptr)
+ utils._handle_ret(count, "cannot get event class object's attribute count")
+ return count
+
+ def __iter__(self):
+ return _EventClassAttributesIterator(self)
+
+
+class EventClass(object._Object):
+ def __init__(self, name, id=None, context_field_type=None,
+ payload_field_type=None, attributes=None):
+ utils._check_str(name)
+ ptr = native_bt.ctf_event_class_create(name)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create event class object')
+
+ super().__init__(ptr)
+
+ if id is not None:
+ self.id = id
+
+ if context_field_type is not None:
+ self.context_field_type = context_field_type
+
+ if payload_field_type is not None:
+ self.payload_field_type = payload_field_type
+
+ if attributes is not None:
+ for name, value in attributes.items():
+ self.attributes[name] = value
+
+ @property
+ def stream_class(self):
+ sc_ptr = native_bt.ctf_event_class_get_stream_class(self._ptr)
+
+ if sc_ptr is not None:
+ return bt2.StreamClass._create_from_ptr(sc_ptr)
+
+ @property
+ def attributes(self):
+ return _EventClassAttributes(self._ptr)
+
+ @property
+ def name(self):
+ return native_bt.ctf_event_class_get_name(self._ptr)
+
+ @property
+ def id(self):
+ id = native_bt.ctf_event_class_get_id(self._ptr)
+
+ if utils._is_m1ull(id):
+ raise bt2.Error("cannot get event class object's ID")
+
+ return id
+
+ @id.setter
+ def id(self, id):
+ utils._check_int64(id)
+ ret = native_bt.ctf_event_class_set_id(self._ptr, id)
+ utils._handle_ret(ret, "cannot set event class object's ID")
+
+ @property
+ def context_field_type(self):
+ ft_ptr = native_bt.ctf_event_class_get_context_type(self._ptr)
+
+ if ft_ptr is None:
+ return
+
+ return bt2.field_types._create_from_ptr(ft_ptr)
+
+ @context_field_type.setter
+ def context_field_type(self, context_field_type):
+ context_field_type_ptr = None
+
+ if context_field_type is not None:
+ utils._check_type(context_field_type, bt2.field_types._FieldType)
+ context_field_type_ptr = context_field_type._ptr
+
+ ret = native_bt.ctf_event_class_set_context_type(self._ptr, context_field_type_ptr)
+ utils._handle_ret(ret, "cannot set event class object's context field type")
+
+ @property
+ def payload_field_type(self):
+ ft_ptr = native_bt.ctf_event_class_get_payload_type(self._ptr)
+
+ if ft_ptr is None:
+ return
+
+ return bt2.field_types._create_from_ptr(ft_ptr)
+
+ @payload_field_type.setter
+ def payload_field_type(self, payload_field_type):
+ payload_field_type_ptr = None
+
+ if payload_field_type is not None:
+ utils._check_type(payload_field_type, bt2.field_types._FieldType)
+ payload_field_type_ptr = payload_field_type._ptr
+
+ ret = native_bt.ctf_event_class_set_payload_type(self._ptr, payload_field_type_ptr)
+ utils._handle_ret(ret, "cannot set event class object's payload field type")
+
+ def __call__(self):
+ event_ptr = native_bt.ctf_event_create(self._ptr)
+
+ if event_ptr is None:
+ raise bt2.CreationError('cannot create event field object')
+
+ return bt2.event._create_from_ptr(event_ptr)
+
+ def __eq__(self, other):
+ if type(other) is not type(self):
+ return False
+
+ if self.addr == other.addr:
+ return True
+
+ self_attributes = {name: val for name, val in self.attributes.items()}
+ other_attributes = {name: val for name, val in other.attributes.items()}
+ self_props = (
+ self_attributes,
+ self.name,
+ self.id,
+ self.context_field_type,
+ self.payload_field_type
+ )
+ other_props = (
+ other_attributes,
+ other.name,
+ other.id,
+ other.context_field_type,
+ other.payload_field_type
+ )
+ return self_props == other_props
+
+ def _copy(self, ft_copy_func):
+ cpy = EventClass(self.name)
+ cpy.id = self.id
+
+ for name, value in self.attributes.items():
+ cpy.attributes[name] = value
+
+ cpy.context_field_type = ft_copy_func(self.context_field_type)
+ cpy.payload_field_type = ft_copy_func(self.payload_field_type)
+ return cpy
+
+ def __copy__(self):
+ return self._copy(lambda ft: ft)
+
+ def __deepcopy__(self, memo):
+ cpy = self._copy(copy.deepcopy)
+ memo[id(self)] = cpy
+ return cpy
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