pub struct JumpTable(_);
Expand description

An opaque reference to a jump table.

JumpTables are used for indirect branching and are specialized for dense, 0-based jump offsets. If you want a jump table which doesn’t start at 0, or is not contiguous, consider using a Switch instead.

JumpTable are used with br_table.

JumpTables can be created with create_jump_table.

While the order is stable, it is arbitrary.

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impl JumpTable

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pub fn from_u32(x: u32) -> Self

Create a new instance from a u32.

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pub fn as_u32(self) -> u32

Return the underlying index value as a u32.

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pub fn as_bits(self) -> u32

Return the raw bit encoding for this instance.

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pub fn from_bits(x: u32) -> Self

Create a new instance from the raw bit encoding.

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impl JumpTable

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pub fn with_number(n: u32) -> Option<Self>

Create a new jump table reference from its number.

This method is for use by the parser.

Trait Implementations§

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impl Clone for JumpTable

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fn clone(&self) -> JumpTable

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for JumpTable

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

Formats the value using the given formatter. Read more
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impl Display for JumpTable

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

Formats the value using the given formatter. Read more
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impl EntityRef for JumpTable

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fn new(index: usize) -> Self

Create a new entity reference from a small integer. This should crash if the requested index is not representable.
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fn index(self) -> usize

Get the index that was used to create this entity reference.
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impl From<JumpTable> for AnyEntity

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fn from(r: JumpTable) -> Self

Converts to this type from the input type.
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impl Hash for JumpTable

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for JumpTable

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fn cmp(&self, other: &JumpTable) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl PartialEq<JumpTable> for JumpTable

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fn eq(&self, other: &JumpTable) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd<JumpTable> for JumpTable

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fn partial_cmp(&self, other: &JumpTable) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl ReservedValue for JumpTable

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fn reserved_value() -> JumpTable

Create an instance of the reserved value.
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fn is_reserved_value(&self) -> bool

Checks whether value is the reserved one.
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impl Copy for JumpTable

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impl Eq for JumpTable

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impl StructuralEq for JumpTable

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impl StructuralPartialEq for JumpTable

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CallHasher for Twhere T: Hash + ?Sized,

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default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64where H: Hash + ?Sized, B: BuildHasher,

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impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> SparseMapValue<T> for Twhere T: EntityRef,

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fn key(&self) -> T

Get the key of this sparse map value. This key is not allowed to change while the value is a member of the map.
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.