Enum bones_framework::asset::Maybe

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#[repr(C, u8)]
pub enum Maybe<T> { Unset, Set(T), }
Expand description

An equivalent to Option<T> that has a stable memory layout and implements HasSchema.

Variants§

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Unset

The value is not set.

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Set(T)

The value is set.

Implementations§

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impl<T> Maybe<T>

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pub fn option(self) -> Option<T>

Convert this Maybe into an Option.

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pub fn is_set(&self) -> bool

Returns true if the option is a Set value.

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pub fn is_unset(&self) -> bool

Returns true if the option is an Unset value.

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pub fn is_some(&self) -> bool

Returns true if the option is a Set value.

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pub fn is_none(&self) -> bool

Returns true if the option is an Unset value.

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pub fn contains<U>(&self, x: &U) -> bool
where U: PartialEq<T>,

Returns true if the option is a Set value containing the given value.

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pub fn as_ref(&self) -> Maybe<&T>

Converts from &Maybe<T> to Maybe<&T>.

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pub fn as_mut(&mut self) -> Maybe<&mut T>

Converts from &mut Maybe<T> to Maybe<&mut T>.

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pub fn expect(self, msg: &str) -> T

Returns the contained Set value, consuming the self value.

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pub fn unwrap(self) -> T

Returns the contained Set value, consuming the self value.

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pub fn unwrap_or(self, default: T) -> T

Returns the contained Set value or a provided default.

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pub fn unwrap_or_else<F>(self, f: F) -> T
where F: FnOnce() -> T,

Returns the contained Set value or computes it from a closure.

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pub fn map<U, F>(self, f: F) -> Maybe<U>
where F: FnOnce(T) -> U,

Maps a Maybe<T> to Maybe<U> by applying a function to a contained value.

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pub fn and_then<U, F>(self, f: F) -> Maybe<U>
where F: FnOnce(T) -> Maybe<U>,

Returns Unset if the option is Unset, otherwise calls f with the wrapped value and returns the result.

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pub fn and<U>(self, optb: Maybe<U>) -> Maybe<U>

Returns Unset if the option is Unset, otherwise returns optb.

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pub fn filter<P>(self, predicate: P) -> Maybe<T>
where P: FnOnce(&T) -> bool,

Returns Unset if the option is Unset, otherwise calls predicate with the wrapped value and returns:

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pub fn or(self, optb: Maybe<T>) -> Maybe<T>

Returns the option if it contains a value, otherwise returns optb.

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pub fn or_else<F>(self, f: F) -> Maybe<T>
where F: FnOnce() -> Maybe<T>,

Returns the option if it contains a value, otherwise calls f and returns the result.

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pub fn xor(self, optb: Maybe<T>) -> Maybe<T>

Returns Set if exactly one of self, optb is Set, otherwise returns Unset.

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pub fn get_or_insert(&mut self, v: T) -> &mut T

Inserts v into the option if it is Unset, then returns a mutable reference to the contained value.

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pub fn get_or_insert_with<F>(&mut self, f: F) -> &mut T
where F: FnOnce() -> T,

Inserts a value computed from f into the option if it is Unset, then returns a mutable reference to the contained value.

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pub fn take(&mut self) -> Maybe<T>

Takes the value out of the option, leaving an Unset in its place.

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pub fn replace(&mut self, value: T) -> Maybe<T>

Replaces the actual value in the option by the value given in parameter, returning the old value if present.

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pub fn zip<U>(self, other: Maybe<U>) -> Maybe<(T, U)>

Zips self with another Maybe.

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pub unsafe fn unwrap_unchecked(self) -> T

Returns the contained Set value, consuming the self value, without checking that the value is not Unset.

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Calling this method on an Unset value is undefined behavior.

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pub fn map_or<U, F>(self, default: U, f: F) -> U
where F: FnOnce(T) -> U,

Maps a Maybe<T> to U by applying a function to a contained value, or returns a default.

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pub fn map_or_else<U, D, F>(self, default: D, f: F) -> U
where D: FnOnce() -> U, F: FnOnce(T) -> U,

Maps a Maybe<T> to U by applying a function to a contained value, or computes a default.

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pub fn unwrap_or_default(self) -> T
where T: Default,

Returns the contained Set value or a default.

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pub fn ok_or<E>(self, err: E) -> Result<T, E>

Transforms the Maybe<T> into a Result<T, E>, mapping Set(v) to Ok(v) and Unset to Err(err).

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pub fn ok_or_else<E, F>(self, err: F) -> Result<T, E>
where F: FnOnce() -> E,

Transforms the Maybe<T> into a Result<T, E>, mapping Set(v) to Ok(v) and Unset to Err(err()).

Trait Implementations§

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impl<T> Clone for Maybe<T>
where T: Clone,

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fn clone(&self) -> Maybe<T>

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<T> Debug for Maybe<T>
where T: Debug,

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

Formats the value using the given formatter. Read more
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impl<T> Default for Maybe<T>

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fn default() -> Maybe<T>

Returns the “default value” for a type. Read more
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impl<T> From<Option<T>> for Maybe<T>

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fn from(value: Option<T>) -> Maybe<T>

Converts to this type from the input type.
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impl<T> HasSchema for Maybe<T>
where T: HasSchema + Clone,

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fn schema() -> &'static Schema

Get this type’s [Schema].
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fn register_schema()

Register this schema with the global schema registry. Read more
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fn cast<T>(this: &Self) -> &T
where T: HasSchema,

Cast a reference of this type to a reference of another type with the same memory layout. Read more
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fn try_cast<T>(this: &Self) -> Result<&T, SchemaMismatchError>
where T: HasSchema,

Cast a reference of this type to a reference of another type with the same memory layout. Read more
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fn cast_mut<T>(this: &mut Self) -> &mut T
where T: HasSchema,

Cast a mutable reference of this type to a reference of another type with the same memory layout. Read more
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fn try_cast_mut<T>(this: &mut Self) -> Result<&mut T, SchemaMismatchError>
where T: HasSchema,

Cast a mutable reference of this type to a reference of another type with the same memory layout. Read more
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fn as_schema_ref(&self) -> SchemaRef<'_>
where Self: Sized,

Converts a reference of T to a SchemaRef
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fn as_schema_mut(&mut self) -> SchemaRefMut<'_>
where Self: Sized,

Converts a reference of T to a SchemaRefMut
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impl<T> Hash for Maybe<T>
where T: Hash,

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

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<T> Ord for Maybe<T>
where T: Ord,

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fn cmp(&self, other: &Maybe<T>) -> Ordering

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

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

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

Restrict a value to a certain interval. Read more
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impl<T> PartialEq for Maybe<T>
where T: PartialEq,

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fn eq(&self, other: &Maybe<T>) -> 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<T> PartialOrd for Maybe<T>
where T: PartialOrd,

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fn partial_cmp(&self, other: &Maybe<T>) -> 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<T> Copy for Maybe<T>
where T: Copy,

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impl<T> Eq for Maybe<T>
where T: Eq,

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impl<T> StructuralPartialEq for Maybe<T>

Auto Trait Implementations§

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impl<T> Freeze for Maybe<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Maybe<T>
where T: RefUnwindSafe,

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impl<T> Send for Maybe<T>
where T: Send,

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impl<T> Sync for Maybe<T>
where T: Sync,

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impl<T> Unpin for Maybe<T>
where T: Unpin,

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impl<T> UnwindSafe for Maybe<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where 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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for T
where 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 T
where 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> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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

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

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

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

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where 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> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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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<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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impl<T> FromWorld for T
where T: Default,

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fn from_world(_world: &World) -> T

Creates Self using data from the given World.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where 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<F, T> IntoSample<T> for F
where T: FromSample<F>,

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fn into_sample(self) -> T

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

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> RawClone for T
where T: Clone,

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unsafe fn raw_clone(src: *const c_void, dst: *mut c_void)

Write the default value of the type to the pointer. Read more
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fn raw_clone_cb() -> Unsafe<&'static (dyn Fn(*const c_void, *mut c_void) + Send + Sync)>

Get a callback suitable for [SchemaData].
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impl<T> RawDefault for T
where T: Default,

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unsafe fn raw_default(dst: *mut c_void)

Write the default value of the type to the pointer. Read more
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fn raw_default_cb() -> Unsafe<&'static (dyn Fn(*mut c_void) + Send + Sync)>

Get a callback suitable for [SchemaData].
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impl<T> RawDrop for T

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unsafe fn raw_drop(ptr: *mut c_void)

Write the default value of the type to the pointer. Read more
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fn raw_drop_cb() -> Unsafe<&'static (dyn Fn(*mut c_void) + Send + Sync)>

Get a callback suitable for [SchemaData].
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impl<T> RawEq for T
where T: Eq,

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unsafe fn raw_eq(a: *const c_void, b: *const c_void) -> bool

Get the hash of the type. Read more
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fn raw_eq_cb() -> Unsafe<&'static (dyn Fn(*const c_void, *const c_void) -> bool + Send + Sync)>

Get a callback suitable for [SchemaData].
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impl<T> RawHash for T
where T: Hash,

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unsafe fn raw_hash(ptr: *const c_void) -> u64

Get the hash of the type. Read more
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fn raw_hash_cb() -> Unsafe<&'static (dyn Fn(*const c_void) -> u64 + Send + Sync)>

Get a callback suitable for [SchemaData].
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<'gc, T> Singleton<'gc> for T
where T: Default,

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fn create(_: Context<'gc>) -> T

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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where 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, U> ToSample<U> for T
where U: FromSample<T>,

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fn to_sample_(self) -> U

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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where 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 T
where 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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

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impl<T> RuleType for T
where T: Copy + Debug + Eq + Hash + Ord,

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impl<T> SerializableAny for T
where T: 'static + Any + Clone + for<'a> Send + Sync,