Method expression

Tools/cases_generator/parsing.py:479–493

(self)

    @contextual
    def expression(self) -> Expression | None:
        tokens: list[lx.Token] = []
        level = 1
        while tkn := self.peek():
            if tkn.kind in (lx.LBRACKET, lx.LPAREN):
                level += 1
            elif tkn.kind in (lx.RBRACKET, lx.RPAREN):
                level -= 1
                if level == 0:
                    break
            tokens.append(tkn)
            self.next()
        if not tokens:
            return None
        return Expression(lx.to_text(tokens).strip())

    # def ops(self) -> list[OpName] | None:
    #     if op := self.op():