+++ /dev/null
-# The MIT License (MIT)
-#
-# Copyright (c) 2013-2017 Jérémie Galarneau <jeremie.galarneau@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.
-
-import bt2
-import babeltrace.common as common
-import babeltrace.reader_field_declaration as reader_field_declaration
-
-
-class FieldError(Exception):
- """
- Field error, raised when the value of a field cannot be accessed.
- """
-
- def __init__(self, value):
- self.value = value
-
- def __str__(self):
- return repr(self.value)
-
-
-class _Definition:
- def __init__(self, scope_id, field, name):
- self._scope_id = scope_id
- self._field = field
- self._name = name
-
- @property
- def name(self):
- """Return the name of a field or None on error."""
-
- return self._name
-
- @property
- def type(self):
- """Return the type of a field or -1 if unknown."""
-
- try:
- return _OBJ_TO_TYPE_ID[type(self._field)]
- except KeyError:
- return -1
-
- @property
- def declaration(self):
- """Return the associated Definition object."""
-
- return reader_field_declaration._create_field_declaration(
- self._field.field_type, self._name, self.scope)
-
- @property
- def value(self):
- """
- Return the value associated with the field according to its type.
- Return None on error.
- """
-
- try:
- if type(self._field) in (bt2._ArrayField, bt2._SequenceField):
- elem_ft = self._field.field_type.element_field_type
-
- if type(elem_ft) is bt2.IntegerFieldType:
- if elem_ft.size == 8 and elem_ft.encoding != bt2.Encoding.NONE:
- return bytes(x for x in self._field._value if x != 0).decode()
-
- return self._field._value
- except bt2.Error:
- return
-
- @property
- def scope(self):
- """Return the scope of a field or None on error."""
-
- return self._scope_id
-
-
-_OBJ_TO_TYPE_ID = {
- bt2._IntegerField: common.CTFTypeId.INTEGER,
- bt2._FloatingPointNumberField: common.CTFTypeId.FLOAT,
- bt2._EnumerationField: common.CTFTypeId.ENUM,
- bt2._StringField: common.CTFTypeId.STRING,
- bt2._StructureField: common.CTFTypeId.STRUCT,
- bt2._ArrayField: common.CTFTypeId.ARRAY,
- bt2._SequenceField: common.CTFTypeId.SEQUENCE,
- bt2._VariantField: common.CTFTypeId.VARIANT,
-}