def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
elif isinstance(subject, decimal):
return subject
else:
return decimal(interpolate_parameters(subject, parameters, True, interpolator))
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
elif isinstance(subject, numbers):
return int(subject)
else:
return int(interpolate_parameters(subject, parameters, True, interpolator))
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
if not isinstance(subject, (list, tuple)):
raise CannotInterpolateError(
'interpolation candidate must be a list or tuple')
interpolation = []
for i, definition in enumerate(self.values):
try:
interpolation.append(
definition.interpolate(subject[i], parameters,
interpolator))
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError(
"field %r of this tuple is undefined" % i)
else:
raise
return tuple(interpolation)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
if not isinstance(subject, dict):
raise CannotInterpolateError(
'interpolation candidate must be a dict value')
definition = self.value
interpolation = {}
for key, value in subject.items():
try:
interpolation[key] = definition.interpolate(
value, parameters, interpolator)
except UndefinedParameterError:
continue
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError(
"the 'value' field of this map is undefined")
else:
raise
return interpolation
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
if not isinstance(subject, dict):
raise CannotInterpolateError(
'interpolation candidate must be a dict value')
definition = self._get_definition(subject)
interpolation = {}
for name, field in definition.items():
try:
value = subject[name]
except KeyError:
continue
try:
interpolation[name] = field.interpolate(
value, parameters, interpolator)
except UndefinedParameterError:
continue
except AttributeError:
if isinstance(field, Undefined):
raise UndefinedFieldError(
'the %r field of this structure is undefined' % name)
else:
raise
return interpolation
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
if not isinstance(subject, (list, tuple)):
raise CannotInterpolateError(
'interpolation candidate must be a list or tuple value')
definition = self.item
interpolation = []
for item in subject:
try:
interpolation.append(
definition.interpolate(item, parameters, interpolator))
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError(
'the item field of this sequence is undefined')
else:
raise
return interpolation
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True, interpolator)
if not isinstance(subject, dict):
raise CannotInterpolateError('interpolation candidate must be a dict value')
definition = self.value
interpolation = {}
for key, value in subject.items():
try:
interpolation[key] = definition.interpolate(value, parameters, interpolator)
except UndefinedParameterError:
continue
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError("the 'value' field of this map is undefined")
else:
raise
return interpolation
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return subject
else:
return interpolate_parameters(subject,
parameters,
interpolator=interpolator)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True, interpolator)
if not isinstance(subject, dict):
raise CannotInterpolateError('interpolation candidate must be a dict value')
definition = self._get_definition(subject)
interpolation = {}
for name, field in definition.items():
try:
value = subject[name]
except KeyError:
continue
try:
interpolation[name] = field.interpolate(value, parameters, interpolator)
except UndefinedParameterError:
continue
except AttributeError:
if isinstance(field, Undefined):
raise UndefinedFieldError('the %r field of this structure is undefined' % name)
else:
raise
return interpolation
def interpolate(self, subject, parameters, interpolator=None):
"""Attempts to interpolate variables within ``subject`` using the specified
``parameters``."""
equivalent = self.equivalent
if subject is None or (equivalent and isinstance(subject, equivalent)):
return subject
else:
return interpolate_parameters(subject, parameters, True, interpolator)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
elif isinstance(subject, numbers):
return int(subject)
else:
return int(
interpolate_parameters(subject, parameters, True,
interpolator))
def interpolate(self, subject, parameters, interpolator=None):
if subject is None or subject in self.enumeration:
return subject
value = interpolate_parameters(subject, parameters, True, interpolator)
if value in self.enumeration:
return value
else:
raise CannotInterpolateError(
'subject must be a value in this enumeration')
def interpolate(self, subject, parameters, interpolator=None):
"""Attempts to interpolate variables within ``subject`` using the specified
``parameters``."""
equivalent = self.equivalent
if subject is None or (equivalent and isinstance(subject, equivalent)):
return subject
else:
return interpolate_parameters(subject, parameters, True,
interpolator)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return subject
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True, interpolator)
if isinstance(subject, surrogate):
return subject
elif isinstance(subject, dict):
return surrogate.interpolate(subject, parameters, interpolator)
else:
raise ValueError(subject)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return subject
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
if isinstance(subject, surrogate):
return subject
elif isinstance(subject, dict):
return surrogate.interpolate(subject, parameters, interpolator)
else:
raise ValueError(subject)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True,
interpolator)
for field in self.fields:
try:
return field.interpolate(subject, parameters, interpolater)
except CannotInterpolateError:
pass
except AttributeError:
if isinstance(field, Undefined):
raise UndefinedFieldError(
'a field of this union is undefined')
else:
raise
else:
raise CannotInterpolateError('union interpolation failed')
def test_template_interpolation(self):
result = interpolate_parameters('${alpha}', {'alpha': 1, 'beta': 2})
self.assertEqual(result, '1')
result = interpolate_parameters('${alpha} - ${beta}', {'alpha': 1, 'beta': 2})
self.assertEqual(result, '1 - 2')
result = interpolate_parameters('${alpha}', {'beta': 2})
self.assertEqual(result, '')
result = interpolate_parameters('', {'beta': 2})
self.assertEqual(result, '')
with self.assertRaises(ValueError):
interpolate_parameters(True, {})
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True, interpolator)
if not isinstance(subject, (list, tuple)):
raise CannotInterpolateError('interpolation candidate must be a list or tuple')
interpolation = []
for i, definition in enumerate(self.values):
try:
interpolation.append(definition.interpolate(subject[i], parameters, interpolator))
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError("field %r of this tuple is undefined" % i)
else:
raise
return tuple(interpolation)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return None
if isinstance(subject, string):
subject = interpolate_parameters(subject, parameters, True, interpolator)
if not isinstance(subject, (list, tuple)):
raise CannotInterpolateError('interpolation candidate must be a list or tuple value')
definition = self.item
interpolation = []
for item in subject:
try:
interpolation.append(definition.interpolate(item, parameters, interpolator))
except AttributeError:
if isinstance(definition, Undefined):
raise UndefinedFieldError('the item field of this sequence is undefined')
else:
raise
return interpolation
def test_simple_interpolation(self):
result = interpolate_parameters('${alpha}', {'alpha': 1, 'beta': 2}, True)
self.assertEqual(result, 1)
result = interpolate_parameters('${alpha}', {'alpha': '1', 'beta': '2'}, True)
self.assertEqual(result, '1')
def evaluate(self, parameters):
return interpolate_parameters(self.template, parameters)
def interpolate(self, subject, parameters, interpolator=None):
if subject is None:
return subject
else:
return interpolate_parameters(subject, parameters, True, interpolator)
def evaluate(self, parameters):
return interpolate_parameters(self.template, parameters)
