def extractInitArgValue(argName, operators, operands):
'''
Given a name of one of the arguments of the __init__ method,
return the corresponding value contained in the 'operands'
composite expression (i.e., the operands of a constructed operation).
'''
if argName == 'indexOrIndices':
argName = 'instanceVarOrVars'
elif argName == 'summand':
argName = 'instanceExpr'
return OperationOverInstances.extractInitArgValue(
argName, operators, operands)
def extractInitArgValue(argName, operators, operands):
'''
Given a name of one of the arguments of the __init__ method,
return the corresponding value contained in the 'operands'
composite expression (i.e., the operands of a constructed operation).
'''
from proveit.logic import InSet
if argName=='instanceElement':
return operands.body # instance mapping
elif argName=='instanceVar':
return operands.parameter
elif argName=='domain':
# the first condition must be the domain condition
domainCondition = operands.conditions[0]
assert isinstance(domainCondition, InSet), "Expecting the first condition of a SetOfAll object to be the domain condition of type InSet"
assert domainCondition.element==operands.parameter, "Expecting the first condition of a SetOfAll object to be the domain condition with the proper element"
return domainCondition.domain
elif argName=='conditions':
return ExprList(*operands.conditions[1:]) # all except the domain condition
else:
return OperationOverInstances.extractInitArgValue(argName, operators, operands)
