/usr/share/pyshared/PyTango/attr_data.py is in python-pytango 7.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 | ################################################################################
##
## This file is part of PyTango, a python binding for Tango
##
## http://www.tango-controls.org/static/PyTango/latest/doc/html/index.html
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## PyTango is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## PyTango is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with PyTango. If not, see <http://www.gnu.org/licenses/>.
##
################################################################################
"""
This is an internal PyTango module.
"""
__all__ = [ "AttrData" ]
__docformat__ = "restructuredtext"
import operator
from _PyTango import Except, CmdArgType, AttrDataFormat, AttrWriteType, \
DispLevel, UserDefaultAttrProp, Attr, SpectrumAttr, ImageAttr
class AttrData(object):
"""A helper class that contains the same information one of the items in
DeviceClass.attr_list but in object form"""
def __init__(self, name, class_name, attr_info=None):
self.class_name = class_name
self.attr_name = name
self.attr_type = CmdArgType.DevVoid
self.attr_format = AttrDataFormat.SCALAR
self.attr_write = AttrWriteType.READ
self.dim_x = 1
self.dim_y = 0
self.display_level = DispLevel.OPERATOR
self.polling_period = -1
self.memorized = False
self.hw_memorized = False
self.read_method_name = "read_%s" % name
self.write_method_name = "write_%s" % name
self.is_allowed_name = "is_%s_allowed" % name
self.attr_class = None
self.attr_args = []
self.att_prop = None
if attr_info is not None:
self.from_attr_info(attr_info)
def __throw_exception(self, msg, meth="create_attribute()"):
Except.throw_exception("PyDs_WrongAttributeDefinition", msg, meth)
def __create_user_default_attr_prop(self, attr_name, extra_info):
"""for internal usage only"""
p = UserDefaultAttrProp()
for k, v in extra_info.iteritems():
k_lower = k.lower()
method_name = "set_%s" % k_lower.replace(' ','_')
if hasattr(p, method_name):
method = getattr(p, method_name)
method(str(v))
elif k == 'delta_time':
p.set_delta_t(str(v))
elif not k_lower in ('display level', 'polling period', 'memorized'):
name = self.get_name()
msg = "Wrong definition of attribute %s in " \
"class %s\nThe object extra information '%s' " \
"is not recognized!" % (attr_name, name, k)
self.__throw_create_attribute_exception(msg)
return p
def from_attr_info(self, attr_info):
name = self.class_name
attr_name = self.attr_name
throw_ex = self.__throw_exception
# check for well defined attribute info
# check parameter
if not operator.isSequenceType(attr_info):
throw_ex("Wrong data type for value for describing attribute %s in "
"class %s\nMust be a sequence with 1 or 2 elements"
% (attr_name, name))
if len(attr_info) < 1 or len(attr_info) > 2:
throw_ex("Wrong number of argument for describing attribute %s in "
"class %s\nMust be a sequence with 1 or 2 elements"
% (attr_name, name))
extra_info = {}
if len(attr_info) == 2:
# attr_info[1] must be a dictionary
# extra_info = attr_info[1], with all the keys lowercase
for k, v in attr_info[1].iteritems():
extra_info[k.lower()] = v
attr_info = attr_info[0]
attr_info_len = len(attr_info)
# check parameter
if not operator.isSequenceType(attr_info) or \
attr_info_len < 3 or attr_info_len > 5:
throw_ex("Wrong data type for describing mandatory information for "
"attribute %s in class %s\nMust be a sequence with 3, 4 "
"or 5 elements" % (attr_name, name))
# get data type
try:
self.attr_type = CmdArgType(attr_info[0])
except:
throw_ex("Wrong data type in attribute argument for attribute %s "
"in class %s\nAttribute data type (first element in first "
"sequence) must be a PyTango.CmdArgType"
% (attr_name, name))
# get format
try:
self.attr_format = AttrDataFormat(attr_info[1])
except:
throw_ex("Wrong data format in attribute argument for attribute %s "
"in class %s\nAttribute data format (second element in "
"first sequence) must be a PyTango.AttrDataFormat"
% (attr_name, name))
if self.attr_format == AttrDataFormat.SCALAR:
if attr_info_len != 3:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\nSequence describing mandatory "
"attribute parameters for scalar attribute must have "
"3 elements" % (attr_name, name))
elif self.attr_format == AttrDataFormat.SPECTRUM:
if attr_info_len != 4:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\nSequence describing mandatory "
"attribute parameters for spectrum attribute must "
"have 4 elements" % (attr_name, name))
try:
self.dim_x = int(attr_info[3])
except:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\n4th element in sequence describing "
"mandatory dim_x attribute parameter for spectrum "
"attribute must be an integer" % (attr_name, name))
elif self.attr_format == AttrDataFormat.IMAGE:
if attr_info_len != 5:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\nSequence describing mandatory "
"attribute parameters for image attribute must have "
"5 elements" % (attr_name, name))
try:
self.dim_x = int(attr_info[3])
except:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\n4th element in sequence describing "
"mandatory dim_x attribute parameter for image "
"attribute must be an integer" % (attr_name, name))
try:
self.dim_y = int(attr_info[4])
except:
throw_ex("Wrong data type in attribute argument for attribute "
"%s in class %s\n5th element in sequence describing "
"mandatory dim_y attribute parameter for image "
"attribute must be an integer" % (attr_name, name))
#get write type
try:
self.attr_write = AttrWriteType(attr_info[2])
except:
throw_ex("Wrong data write type in attribute argument for "
"attribute %s in class %s\nAttribute write type (third "
"element in first sequence) must be a "
"PyTango.AttrWriteType" % (attr_name, name))
try:
self.display_level = DispLevel(extra_info.get("display level",
DispLevel.OPERATOR))
except:
throw_ex("Wrong display level in attribute information for "
"attribute %s in class %s\nAttribute information for "
"display level is not a PyTango.DispLevel"
% (attr_name, name))
try:
self.polling_period = int(extra_info.get("polling period", -1))
except:
throw_ex("Wrong polling period in attribute information for "
"attribute %s in class %s\nAttribute information for "
"polling period is not an integer" % (attr_name, name))
self.memorized = extra_info.get("memorized", "false")
if self.memorized == "true":
self.memorized, self.hw_memorized = True, True
elif self.memorized == "true_without_hard_applied":
self.memorized = True
else:
self.memorized = False
self.attr_class = extra_info.get("klass", self.DftAttrClassMap[self.attr_format])
self.attr_args.extend((self.attr_name, self.attr_type, self.attr_write))
if not self.attr_format == AttrDataFormat.SCALAR:
self.attr_args.append(self.dim_x)
if not self.attr_format == AttrDataFormat.SPECTRUM:
self.attr_args.append(self.dim_y)
att_prop = None
if extra_info:
att_prop = self.__create_user_default_attr_prop(attr_name, extra_info)
self.att_prop = att_prop
def to_attr(self):
attr = self.attr_class(*self.attr_args)
if self.att_prop is not None:
attr.set_default_properties(self.att_prop)
attr.set_disp_level(self.display_level)
if self.memorized:
attr.set_memorized()
attr.set_memorized_init(self.hw_memorized)
if self.polling_period > 0:
attr.set_polling_period(self.polling_period)
return attr
DftAttrClassMap = { AttrDataFormat.SCALAR : Attr,
AttrDataFormat.SPECTRUM: SpectrumAttr,
AttrDataFormat.IMAGE : ImageAttr }
|