Enum wlambda::vval::StackAction

pub enum StackAction {
    Panic(VVal, Vec<Option<SynPos>>),
    Return((VVal, VVal)),
    Break(VVal),
    Next,
}

Encodes all kinds of jumps up the call stack, like break and next in Loops.

As WLambda is not using a VM, it uses return values of the closure call tree to handle jumping up the stack.

Variants

Panic(VVal, Vec<Option<SynPos>>)

Return((VVal, VVal))

Break(VVal)

Next

Methods

impl StackAction

pub fn panic_borrow(v: &VVal) -> Self

pub fn panic_msg(err: String) -> Self

pub fn panic_str(err: String, sp: Option<SynPos>) -> Self

pub fn panic(err: VVal, sp: Option<SynPos>) -> Self

pub fn wrap_panic(self, sp: Option<SynPos>) -> Self

Trait Implementations

impl Clone for StackAction

fn clone(&self) -> StackAction

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StackAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Display for StackAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.