def evaluate(self):
"""
Evaluates the variable to retrieve its stored value.
:exception: raises a runtime_error.RuntimeError if the variable name
is not in the symbol table, with the message,
'Unrecognized variable {variable}'
:return: The value associated with the variable (int)
"""
if self.id not in self.symTbl:
raise runtime_error.RuntimeError("Unrecognized variable {variable}")
return self.symTbl[self.id]
def evaluate(self):
"""
Evaluates the math expression and returns the result.
:exception: raises a runtime_error.RuntimeError if division by zero
is attempted, with the message, 'Division by zero error'
:return: The result of performing the math operation (int)
"""
if self.token == '+':
return self.left.evaluate() + self.right.evaluate()
elif self.token == '-':
return self.left.evaluate() - self.right.evaluate()
elif self.token == '//':
if self.right.emit() == '0':
raise runtime_error.RuntimeError("Division by zero error")
return self.left.evaluate() // self.right.evaluate()
elif self.token == '*':
return self.left.evaluate() * self.right.evaluate()
def evaluate(self):
"""
Evaluates the math expression and returns the result.
:exception: raises a runtime_error.RuntimeError if division by zero
is attempted, with the message, 'Division by zero error'
:return: The result of performing the math operation (int)
"""
if self.token is "+":
return self.left.evaluate() + self.right.evaluate()
elif self.token is "-":
return self.left.evaluate() - self.right.evaluate()
elif self.token is "*":
return self.left.evaluate() * self.right.evaluate()
elif self.token == '//':
if isinstance(self.right,
literal_node.LiteralNode) and self.right.val == 0:
raise runtime_error.RuntimeError('Division by zero error')
return self.left.evaluate() // self.right.evaluate()
def evaluate(self):
"""
Evaluates the math expression and returns the result.
:exception: raises a runtime_error.RuntimeError if division by zero
is attempted, with the message, 'Division by zero error'
:return: The result of performing the math operation (int)
"""
if self.token == "+":
return self.left.evaluate() + self.right.evaluate()
elif self.token == "-":
return self.left.evaluate() - self.right.evaluate()
elif self.token == "*":
return self.left.evaluate() * self.right.evaluate()
elif self.token == "//":
if str(self.right.evaluate()) == "0":
raise runtime_error.RuntimeError('Division by zero error')
else:
return self.left.evaluate() // self.right.evaluate()
pass
def evaluate(self):
"""
Evaluates the math expression and returns the result.
:exception: raises a runtime_error.RuntimeError if division by zero
is attempted, with the message, 'Division by zero error'
:return: The result of performing the math operation (int)
"""
left_value = self.left.evaluate()
right_value = self.right.evaluate()
if self.token == pretee.PreTee.ADD_TOKEN:
return left_value + right_value
elif self.token == pretee.PreTee.SUBTRACT_TOKEN:
return left_value - right_value
elif self.token == pretee.PreTee.MULTIPLY_TOKEN:
return left_value * right_value
elif self.token == pretee.PreTee.DIVIDE_TOKEN:
if right_value == 0:
raise runtime_error.RuntimeError('Division by zero error')
else:
return left_value // right_value
def evaluate(self):
"""
Evaluates the math expression and returns the result.
:exception: raises a runtime_error.RuntimeError if division by zero
is attempted, with the message, 'Division by zero error'
:return: The result of performing the math operation (int)
"""
if self.token == pretee.PreTee.ADD_TOKEN:
return self.left.evaluate() + self.right.evaluate()
elif self.token == pretee.PreTee.SUBTRACT_TOKEN:
return self.left.evaluate() - self.right.evaluate()
elif self.token == pretee.PreTee.MULTIPLY_TOKEN:
return self.left.evaluate() * self.right.evaluate()
elif self.token == pretee.PreTee.DIVIDE_TOKEN:
divisor = self.right.evaluate()
if divisor != 0:
return self.left.evaluate() // divisor
else:
raise runtime_error.RuntimeError("Division by zero error")
