Struct tvix_eval::vm::CallFrame

source ·
struct CallFrame {
    lambda: Rc<Lambda>,
    upvalues: Rc<Upvalues>,
    ip: CodeIdx,
    stack_offset: usize,
}

Fields§

§lambda: Rc<Lambda>

The lambda currently being executed.

§upvalues: Rc<Upvalues>

Optional captured upvalues of this frame (if a thunk or closure if being evaluated).

§ip: CodeIdx

Instruction pointer to the instruction currently being executed.

§stack_offset: usize

Stack offset, i.e. the frames “view” into the VM’s full stack.

Implementations§

source§

impl CallFrame

source

fn upvalue(&self, idx: UpvalueIdx) -> &Value

Retrieve an upvalue from this frame at the given index.

source

fn chunk(&self) -> &Chunk

Borrow the chunk of this frame’s lambda.

source

fn inc_ip(&mut self) -> Op

Increment this frame’s instruction pointer and return the operation that the pointer moved past.

source

fn read_uvarint(&mut self) -> u64

Read a varint-encoded operand and return it. The frame pointer is incremented internally.

source

fn read_u16(&mut self) -> u16

Read a fixed-size u16 and increment the frame pointer.

source

pub fn error<T, IO>(&self, vm: &VM<'_, IO>, kind: ErrorKind) -> Result<T, Error>

Construct an error result from the given ErrorKind and the source span of the current instruction.

source

pub fn current_span(&self) -> Span

Returns the current span. This is potentially expensive and should only be used when actually constructing an error or warning.

Trait Implementations§

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> IntoEither for T

source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
source§

impl<T> Same for T

source§

type Output = T

Should always be Self
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

source§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V