/usr/lib/python2.7/dist-packages/genpy/base.py is in python-genpy 0.5.7-6.
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# Primitive type handling for ROS builtin types
SIMPLE_TYPES_DICT = { #see python module struct
'int8': 'b',
'uint8': 'B',
# Python 2.6 adds in '?' for C99 _Bool, which appears equivalent to an uint8,
# thus, we use uint8
'bool': 'B',
'int16' : 'h',
'uint16' : 'H',
'int32' : 'i',
'uint32' : 'I',
'int64' : 'q',
'uint64' : 'Q',
'float32': 'f',
'float64': 'd',
# deprecated
'char' : 'B', #unsigned
'byte' : 'b', #signed
}
## Simple types are primitives with fixed-serialization length
SIMPLE_TYPES = list(SIMPLE_TYPES_DICT.keys()) #py3k
def is_simple(type_):
"""
:returns: ``True`` if type is a 'simple' type, i.e. is of
fixed/known serialization length. This is effectively all primitive
types except for string, ``bool``
"""
return type_ in SIMPLE_TYPES
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