Method build_replacement_checkers

mypy/checkstrformat.py:863–872

(
        self, specifiers: list[ConversionSpecifier], context: Context, expr: FormatStringExpr
    )

            assert False, "Unreachable"

    def build_replacement_checkers(
        self, specifiers: list[ConversionSpecifier], context: Context, expr: FormatStringExpr
    ) -> list[Checkers] | None:
        checkers: list[Checkers] = []
        for specifier in specifiers:
            checker = self.replacement_checkers(specifier, context, expr)
            if checker is None:
                return None
            checkers.extend(checker)
        return checkers

    def replacement_checkers(
        self, specifier: ConversionSpecifier, context: Context, expr: FormatStringExpr