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| 1 # Protocol Buffers - Google's data interchange format |
| 2 # Copyright 2008 Google Inc. All rights reserved. |
| 3 # http://code.google.com/p/protobuf/ |
| 4 # |
| 5 # Redistribution and use in source and binary forms, with or without |
| 6 # modification, are permitted provided that the following conditions are |
| 7 # met: |
| 8 # |
| 9 # * Redistributions of source code must retain the above copyright |
| 10 # notice, this list of conditions and the following disclaimer. |
| 11 # * Redistributions in binary form must reproduce the above |
| 12 # copyright notice, this list of conditions and the following disclaimer |
| 13 # in the documentation and/or other materials provided with the |
| 14 # distribution. |
| 15 # * Neither the name of Google Inc. nor the names of its |
| 16 # contributors may be used to endorse or promote products derived from |
| 17 # this software without specific prior written permission. |
| 18 # |
| 19 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 22 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 23 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 24 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 25 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 29 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 |
| 31 """A simple wrapper around enum types to expose utility functions. |
| 32 |
| 33 Instances are created as properties with the same name as the enum they wrap |
| 34 on proto classes. For usage, see: |
| 35 reflection_test.py |
| 36 """ |
| 37 |
| 38 __author__ = 'rabsatt@google.com (Kevin Rabsatt)' |
| 39 |
| 40 |
| 41 class EnumTypeWrapper(object): |
| 42 """A utility for finding the names of enum values.""" |
| 43 |
| 44 DESCRIPTOR = None |
| 45 |
| 46 def __init__(self, enum_type): |
| 47 """Inits EnumTypeWrapper with an EnumDescriptor.""" |
| 48 self._enum_type = enum_type |
| 49 self.DESCRIPTOR = enum_type; |
| 50 |
| 51 def Name(self, number): |
| 52 """Returns a string containing the name of an enum value.""" |
| 53 if number in self._enum_type.values_by_number: |
| 54 return self._enum_type.values_by_number[number].name |
| 55 raise ValueError('Enum %s has no name defined for value %d' % ( |
| 56 self._enum_type.name, number)) |
| 57 |
| 58 def Value(self, name): |
| 59 """Returns the value coresponding to the given enum name.""" |
| 60 if name in self._enum_type.values_by_name: |
| 61 return self._enum_type.values_by_name[name].number |
| 62 raise ValueError('Enum %s has no value defined for name %s' % ( |
| 63 self._enum_type.name, name)) |
| 64 |
| 65 def keys(self): |
| 66 """Return a list of the string names in the enum. |
| 67 |
| 68 These are returned in the order they were defined in the .proto file. |
| 69 """ |
| 70 |
| 71 return [value_descriptor.name |
| 72 for value_descriptor in self._enum_type.values] |
| 73 |
| 74 def values(self): |
| 75 """Return a list of the integer values in the enum. |
| 76 |
| 77 These are returned in the order they were defined in the .proto file. |
| 78 """ |
| 79 |
| 80 return [value_descriptor.number |
| 81 for value_descriptor in self._enum_type.values] |
| 82 |
| 83 def items(self): |
| 84 """Return a list of the (name, value) pairs of the enum. |
| 85 |
| 86 These are returned in the order they were defined in the .proto file. |
| 87 """ |
| 88 return [(value_descriptor.name, value_descriptor.number) |
| 89 for value_descriptor in self._enum_type.values] |
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