earthengine-api/python/ee/ee_string.py
Noel Gorelick 760a5eec98 v0.1.22
2014-03-14 16:39:16 -07:00

61 lines
1.5 KiB
Python

"""A wrapper for strings."""
import apifunction
import computedobject
import ee_exception
# Using lowercase function naming to match the JavaScript names.
# pylint: disable=g-bad-name
class String(computedobject.ComputedObject):
"""An object to represent strings."""
_initialized = False
def __init__(self, string):
"""Construct a string wrapper.
This constuctor accepts the following args:
1) A bare string.
2) A ComputedObject returning a string.
Args:
string: The string to wrap.
"""
self.initialize()
if isinstance(string, basestring):
super(String, self).__init__(None, None)
elif isinstance(string, computedobject.ComputedObject):
super(String, self).__init__(string.func, string.args, string.varName)
else:
raise ee_exception.EEException(
'Invalid argument specified for ee.String(): %s' % string)
self._string = string
@classmethod
def initialize(cls):
"""Imports API functions to this class."""
if not cls._initialized:
apifunction.ApiFunction.importApi(cls, 'String', 'String')
cls._initialized = True
@classmethod
def reset(cls):
"""Removes imported API functions from this class."""
apifunction.ApiFunction.clearApi(cls)
cls._initialized = False
@staticmethod
def name():
return 'String'
def encode(self, opt_encoder=None):
if isinstance(self._string, basestring):
return self._string
else:
return self._string.encode(opt_encoder)