Struct rustc_mir::borrow_check::nll::region_infer::Constraint

pub struct Constraint {
    sup: RegionVid,
    sub: RegionVid,
    point: Location,
    next: Option<ConstraintIndex>,
    span: Span,
}

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

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Fields

sup: RegionVid

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

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The region SUP must outlive SUB...

sub: RegionVid

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

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Region that must be outlived.

point: Location

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

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At this location.

next: Option<ConstraintIndex>

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

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Later on, we thread the constraints onto a linked list grouped by their sub field. So if you had:

Index	Constraint	Next Field
0	'a: 'b	Some(2)
1	'b: 'c	None
2	'c: 'b	None

span: Span

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

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Where did this constraint arise?

Trait Implementations

impl Copy for Constraint

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for Constraint

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Constraint) -> bool

This method tests for !=.

impl Eq for Constraint

fn assert_receiver_is_total_eq(&self)

impl PartialOrd for Constraint

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Constraint) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Constraint) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Constraint) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Constraint) -> bool

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

impl Ord for Constraint

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl Hash for Constraint

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

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Debug for Constraint

fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.