def calculateAndReturnAnsToken(operandStack, operatorStack):
num2Token = st.popStack(operandStack) # Pop the second operand for calculation (FILO)
num1Token = st.popStack(operandStack) # Pop the first operand for calculation (FILO)
operator = st.popStack(operatorStack) # Pop the operator for calculation
ans = ar.calculationBasedOnOperator(num1Token.num, num2Token.num, operator.symbol) # Get the calculated ans
token = operandT.createOperandToken(sI.formatNumber(ans)) # Create the operand token based on calculated ans
return token
def test_createOperandToken_given_abcd_expect_exception_raised(self):
try:
# createOperandToken(operandStr)
operandToken = operandT.createOperandToken("abcd")
self.assertEqual("abcd", operandToken.num)
self.assertEqual(None, operandToken.numType)
self.assertEqual("OPERAND_TOKEN", operandToken.tokenType)
except Exception as e:
print(e)
def createAndPushTokenToStack(listIndex, expressionList, operandStack, operatorStack, previousToken):
currentChar = expressionList[listIndex]
if sI.isNumber(currentChar): # formatNumber(number)
token = operandT.createOperandToken(sI.formatNumber(sI.stringToNumber(currentChar)))
st.pushStack(operandStack, token)
elif sI.isOperator(currentChar): # Raise exception when non operator detected
token = operatorT.createOperatorToken(operatorT.getOperatorStrAffix(getCharFromToken(previousToken),
expressionList[listIndex + 1],
currentChar))
st.pushStack(operatorStack, token)
return token
def createToken(listIndex, expressionList, previousToken):
currentChar = expressionList[listIndex]
if sI.isNumber(currentChar): # formatNumber(number)
token = operandT.createOperandToken(sI.formatNumber(sI.stringToNumber(currentChar)))
elif sI.isOperator(currentChar): # Raise exception when non operator detected, required next char to check get
# affix
token = operatorT.createOperatorToken(operatorT.getOperatorStrAffix(getCharFromToken(previousToken),
expressionList[listIndex + 1],
currentChar))
token.tokenId = listIndex
return token
def test_createOperandToken_given_1012_expect_token_with_correct_info(self):
# createOperandToken(operandStr)
operandToken = operandT.createOperandToken("1012")
self.assertEqual(1012, operandToken.num)
self.assertEqual("int", operandToken.numType)
self.assertEqual("OPERAND_TOKEN", operandToken.tokenType)
def test_a_getCharFromToken_given_operand_token_expect_return_value_of_token_in_str(
self):
# createOperandToken(operandStr)
operandToken = operandT.createOperandToken("123")
# getCharFromToken(token):
self.assertEqual("123", sY.getCharFromToken(operandToken))