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77 lines
2.1 KiB
Python
77 lines
2.1 KiB
Python
#!/usr/bin/env python
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"""A wrapper for strings."""
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# pylint: disable=g-bad-import-order
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import six # For Python 2/3 compatibility
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from . import apifunction
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from . import computedobject
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from . import ee_exception
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# Using lowercase function naming to match the JavaScript names.
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# pylint: disable=g-bad-name
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class String(computedobject.ComputedObject):
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"""An object to represent strings."""
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_initialized = False
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def __init__(self, string):
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"""Construct a string wrapper.
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This constructor accepts the following args:
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1) A bare string.
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2) A ComputedObject returning a string.
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Args:
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string: The string to wrap.
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"""
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self.initialize()
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if isinstance(string, six.string_types):
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super(String, self).__init__(None, None)
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elif isinstance(string, computedobject.ComputedObject):
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if string.func and string.func.getSignature()['returns'] == 'String':
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# If it's a call that's already returning a String, just cast.
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super(String, self).__init__(string.func, string.args, string.varName)
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else:
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super(String, self).__init__(apifunction.ApiFunction('String'), {
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'input': string
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})
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else:
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raise ee_exception.EEException(
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'Invalid argument specified for ee.String(): %s' % string)
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self._string = string
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@classmethod
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def initialize(cls):
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"""Imports API functions to this class."""
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if not cls._initialized:
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apifunction.ApiFunction.importApi(cls, 'String', 'String')
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cls._initialized = True
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@classmethod
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def reset(cls):
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"""Removes imported API functions from this class."""
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apifunction.ApiFunction.clearApi(cls)
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cls._initialized = False
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@staticmethod
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def name():
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return 'String'
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def encode(self, opt_encoder=None):
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if isinstance(self._string, six.string_types):
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return self._string
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else:
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return self._string.encode(opt_encoder)
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def encode_cloud_value(self, opt_encoder=None):
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if isinstance(self._string, six.string_types):
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return {'constantValue': self._string}
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else:
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return self._string.encode_cloud_value(opt_encoder)
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