def multiplication(self):
curr_expr = self.unary()
mult_ops = [TokenType.STAR, TokenType.SLASH, TokenType.PERCENT]
while self.curr_token_is(mult_ops):
operator = self.pop_token()
right_side = self.unary()
curr_expr = Expression.Binary(curr_expr, operator, right_side)
return curr_expr
def addition(self):
curr_expr = self.multiplication()
addition_ops = [TokenType.MINUS, TokenType.PLUS]
while self.curr_token_is(addition_ops):
operator = self.pop_token()
right_side = self.multiplication()
curr_expr = Expression.Binary(curr_expr, operator, right_side)
return curr_expr
def equality(self):
curr_expr = self.comparison()
equality_ops = [TokenType.EQUAL_EQUAL, TokenType.BANG_EQUAL]
while self.curr_token_is(equality_ops):
operator = self.pop_token()
right_side = self.comparison()
curr_expr = Expression.Binary(curr_expr, operator, right_side)
return curr_expr
def logical_ops(self):
curr_expr = self.equality()
logical_ops = [TokenType.OR, TokenType.AND]
while self.curr_token_is(logical_ops):
operator = self.pop_token()
right_side = self.equality()
curr_expr = Expression.Binary(curr_expr, operator, right_side)
return curr_expr
def comparison(self):
curr_expr = self.addition()
compare_ops = [
TokenType.LESS, TokenType.LESS_EQUAL, TokenType.GREATER,
TokenType.GREATER_EQUAL
]
while self.curr_token_is(compare_ops):
operator = self.pop_token()
right_side = self.addition()
curr_expr = Expression.Binary(curr_expr, operator, right_side)
return curr_expr