Struct gclient::ext::sp_core::sp_std::mem::Assume

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pub struct Assume {
    pub alignment: bool,
    pub lifetimes: bool,
    pub safety: bool,
    pub validity: bool,
}
🔬This is a nightly-only experimental API. (transmutability)
Expand description

What transmutation safety conditions shall the compiler assume that you are checking?

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§alignment: bool
🔬This is a nightly-only experimental API. (transmutability)

When true, the compiler assumes that you are ensuring (either dynamically or statically) that destination referents do not have stricter alignment requirements than source referents.

§lifetimes: bool
🔬This is a nightly-only experimental API. (transmutability)

When true, the compiler assume that you are ensuring that lifetimes are not extended in a manner that violates Rust’s memory model.

§safety: bool
🔬This is a nightly-only experimental API. (transmutability)

When true, the compiler assumes that you have ensured that no unsoundness will arise from violating the safety invariants of the destination type (and sometimes of the source type, too).

§validity: bool
🔬This is a nightly-only experimental API. (transmutability)

When true, the compiler assumes that you are ensuring that the source type is actually a valid instance of the destination type.

Implementations§

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impl Assume

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pub const NOTHING: Assume = _

🔬This is a nightly-only experimental API. (transmutability)

Do not assume that you have ensured any safety properties are met.

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pub const ALIGNMENT: Assume = _

🔬This is a nightly-only experimental API. (transmutability)

Assume only that alignment conditions are met.

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pub const LIFETIMES: Assume = _

🔬This is a nightly-only experimental API. (transmutability)

Assume only that lifetime conditions are met.

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pub const SAFETY: Assume = _

🔬This is a nightly-only experimental API. (transmutability)

Assume only that safety conditions are met.

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pub const VALIDITY: Assume = _

🔬This is a nightly-only experimental API. (transmutability)

Assume only that dynamically-satisfiable validity conditions are met.

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pub const fn and(self, other_assumptions: Assume) -> Assume

🔬This is a nightly-only experimental API. (transmutability)

Assume both self and other_assumptions.

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pub const fn but_not(self, other_assumptions: Assume) -> Assume

🔬This is a nightly-only experimental API. (transmutability)

Assume self, excepting other_assumptions.

Trait Implementations§

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impl Add for Assume

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type Output = Assume

The resulting type after applying the + operator.
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fn add(self, other_assumptions: Assume) -> Assume

Performs the + operation. Read more
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impl Clone for Assume

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fn clone(&self) -> Assume

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 Assume

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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 PartialEq for Assume

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

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Sub for Assume

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type Output = Assume

The resulting type after applying the - operator.
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fn sub(self, other_assumptions: Assume) -> Assume

Performs the - operation. Read more
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impl ConstParamTy_ for Assume

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impl Copy for Assume

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impl Eq for Assume

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impl StructuralPartialEq for Assume

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impl UnsizedConstParamTy for Assume

Auto Trait Implementations§

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impl Freeze for Assume

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impl RefUnwindSafe for Assume

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impl Send for Assume

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impl Sync for Assume

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impl Unpin for Assume

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impl UnwindSafe for Assume

Blanket Implementations§

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

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where T: ?Sized,

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where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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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<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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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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