Function warn_deprecated_throw_signature

crates/vm/src/coroutine.rs:336–356

Emit DeprecationWarning for the deprecated 3-argument throw() signature.

(
    exc_val: &OptionalArg,
    exc_tb: &OptionalArg,
    vm: &VirtualMachine,
)

/// Emit DeprecationWarning for the deprecated 3-argument throw() signature.
pub fn warn_deprecated_throw_signature(
    exc_val: &OptionalArg,
    exc_tb: &OptionalArg,
    vm: &VirtualMachine,
) -> PyResult<()> {
    if exc_val.is_present() || exc_tb.is_present() {
        crate::warn::warn(
            vm.ctx
                .new_str(
                    "the (type, val, tb) signature of throw() is deprecated, \
                 use throw(val) instead",
                )
                .into(),
            Some(vm.ctx.exceptions.deprecation_warning.to_owned()),
            1,
            None,
            vm,
        )?;
    }
    Ok(())
}