feat(task2): process equations with "()"

task2/tokenizer.py

@@ -6,7 +6,6 @@ from math_objects import Integer, Operator, Parenthesis, Token
 
 def tokenize(string: str) -> Iterable[Token]:
     buffer: deque[str] = deque()
-    prediction: Optional[Literal["number"]] = None
 
     def _take_buffer() -> str:
         string = "".join(buffer)
@@ -15,14 +14,10 @@ def tokenize(string: str) -> Iterable[Token]:
 
     for c in string:
         if c.isdigit():
-            if prediction != "number" and buffer:
-                yield Integer.create_from_string(_take_buffer())
-                prediction = "number"
             buffer.append(c)
         elif c in ["+", "-", "*", "/", "(", ")"]:
             if buffer:
                 yield Integer.create_from_string(_take_buffer())
-                prediction = None
             match c:
                 case "+" | "-":
                     yield Operator(c, precedence=1)
@@ -30,7 +25,6 @@ def tokenize(string: str) -> Iterable[Token]:
                     yield Operator(c, precedence=2)
                 case _:
                     yield Parenthesis(c) # type: ignore
-            prediction = None
         elif c == " ":
             pass
         else: