[−][src]Struct gluon_vm::api::Data
Stores values of variants and records.
Implementations
impl<'a> Data<'a>
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pub fn tag(&self) -> VmTag
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The tag of this variant. If this value is a variant, the tag is the zero-based index of the variant that is present, in order of the declaration.
Use this method to find out what variant you are dealing with, before extracting data from it.
Examples
type OneOfFour =
| First
| Second
| Third
| Fourth
let val = First // has the tag '0'
let val = Fourth // has the tag '3'
pub fn len(&self) -> usize
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Returns the number of fields of this value.
pub fn get(&self, index: usize) -> Option<ValueRef<'a>>
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Retrieves the value of the field at index
, like get_variant
, but does not
wrap it in a Variants
struct.
pub fn iter(&self) -> impl Iterator<Item = Variants<'a>>
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Creates an iterator over the fields of this value.
pub fn get_variant(&self, index: usize) -> Option<Variants<'a>>
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Retrieves the value of the field at index
. This is useful if you cannot
name the field (like in a variant). If the value is a record, use
lookup_field
instead.
pub fn lookup_field(&self, thread: &Thread, name: &str) -> Option<Variants<'a>>
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Retrieves the field name
from this record.
Trait Implementations
impl<'a> Clone for Data<'a>
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impl<'a> Debug for Data<'a>
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impl<'a> PartialEq<Data<'a>> for Data<'a>
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impl<'a> StructuralPartialEq for Data<'a>
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Auto Trait Implementations
impl<'a> !RefUnwindSafe for Data<'a>
impl<'a> Send for Data<'a>
impl<'a> Sync for Data<'a>
impl<'a> Unpin for Data<'a>
impl<'a> !UnwindSafe for Data<'a>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Any for T where
T: Any,
T: Any,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<'_, T> Captures<'_> for T
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impl<T> CloneAny for T where
T: Clone + Any,
T: Clone + Any,
impl<Choices> CoproductSubsetter<CNil, HNil> for Choices
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type Remainder = Choices
fn subset(
self
) -> Result<CNil, <Choices as CoproductSubsetter<CNil, HNil>>::Remainder>
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self
) -> Result<CNil, <Choices as CoproductSubsetter<CNil, HNil>>::Remainder>
impl<T> Downcast for T where
T: Any,
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T: Any,
fn into_any(self: Box<T>) -> Box<dyn Any + 'static>
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
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fn as_any(&self) -> &(dyn Any + 'static)
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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impl<T> DowncastArc for T where
T: Downcast + Send + Sync,
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T: Downcast + Send + Sync,
impl<T> DowncastSync for T where
T: Send + Sync + Any,
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T: Send + Sync + Any,
impl<T> From<T> for T
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impl<D, T> FromPtr<D> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U, I> LiftInto<U, I> for T where
U: LiftFrom<T, I>,
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U: LiftFrom<T, I>,
impl<Source> Sculptor<HNil, HNil> for Source
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,