Enum wlambda::vval::StackAction

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

Return(Box<(VVal, VVal)>)

Break(Box<VVal>)

Next

Implementations

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

pub fn clone(&self) -> StackAction

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StackAction

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for StackAction

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<VVal> for StackAction

pub fn from(v: VVal) -> StackAction

Performs the conversion.