pub struct Capabilities { /* private fields */ }
Expand description

Execution context extra capabilities.

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impl Capabilities

pub const HTTP: Capabilities = _

External http calls.

pub const KEYSTORE: Capabilities = _

Keystore access.

pub const RANDOMNESS: Capabilities = _

Randomness source.

pub const NETWORK_STATE: Capabilities = _

Access to opaque network state.

pub const OFFCHAIN_DB_READ: Capabilities = _

Access to offchain worker DB (read only).

pub const OFFCHAIN_DB_WRITE: Capabilities = _

Access to offchain worker DB (writes).

pub const NODE_AUTHORIZATION: Capabilities = _

Manage the authorized nodes

pub const TIME: Capabilities = _

Access time related functionality

pub const fn empty() -> Capabilities

Returns an empty set of flags.

pub const fn all() -> Capabilities

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: u32) -> Option<Capabilities>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> Capabilities

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> Capabilities

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

§Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Capabilities) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Capabilities) -> bool

Returns true if all of the flags in other are contained within self.

pub fn insert(&mut self, other: Capabilities)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Capabilities)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Capabilities)

Toggles the specified flags in-place.

pub fn set(&mut self, other: Capabilities, value: bool)

Inserts or removes the specified flags depending on the passed value.

pub const fn intersection(self, other: Capabilities) -> Capabilities

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: Capabilities) -> Capabilities

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: Capabilities) -> Capabilities

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

pub const fn symmetric_difference(self, other: Capabilities) -> Capabilities

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> Capabilities

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

Trait Implementations§

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impl Binary for Capabilities

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

Formats the value using the given formatter.
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impl BitAnd for Capabilities

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fn bitand(self, other: Capabilities) -> Capabilities

Returns the intersection between the two sets of flags.

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type Output = Capabilities

The resulting type after applying the & operator.
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impl BitAndAssign for Capabilities

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fn bitand_assign(&mut self, other: Capabilities)

Disables all flags disabled in the set.

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impl BitOr for Capabilities

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fn bitor(self, other: Capabilities) -> Capabilities

Returns the union of the two sets of flags.

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type Output = Capabilities

The resulting type after applying the | operator.
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impl BitOrAssign for Capabilities

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fn bitor_assign(&mut self, other: Capabilities)

Adds the set of flags.

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impl BitXor for Capabilities

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fn bitxor(self, other: Capabilities) -> Capabilities

Returns the left flags, but with all the right flags toggled.

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type Output = Capabilities

The resulting type after applying the ^ operator.
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impl BitXorAssign for Capabilities

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fn bitxor_assign(&mut self, other: Capabilities)

Toggles the set of flags.

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impl Clone for Capabilities

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fn clone(&self) -> Capabilities

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 Capabilities

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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 Extend<Capabilities> for Capabilities

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fn extend<T>(&mut self, iterator: T)
where T: IntoIterator<Item = Capabilities>,

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl FromIterator<Capabilities> for Capabilities

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fn from_iter<T>(iterator: T) -> Capabilities
where T: IntoIterator<Item = Capabilities>,

Creates a value from an iterator. Read more
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impl Hash for Capabilities

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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 LowerHex for Capabilities

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

Formats the value using the given formatter.
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impl Not for Capabilities

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fn not(self) -> Capabilities

Returns the complement of this set of flags.

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type Output = Capabilities

The resulting type after applying the ! operator.
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impl Octal for Capabilities

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

Formats the value using the given formatter.
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impl Ord for Capabilities

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fn cmp(&self, other: &Capabilities) -> 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 PartialEq for Capabilities

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fn eq(&self, other: &Capabilities) -> 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 for Capabilities

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fn partial_cmp(&self, other: &Capabilities) -> 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 Sub for Capabilities

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fn sub(self, other: Capabilities) -> Capabilities

Returns the set difference of the two sets of flags.

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type Output = Capabilities

The resulting type after applying the - operator.
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impl SubAssign for Capabilities

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fn sub_assign(&mut self, other: Capabilities)

Disables all flags enabled in the set.

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impl UpperHex for Capabilities

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

Formats the value using the given formatter.
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impl Copy for Capabilities

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impl Eq for Capabilities

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impl StructuralPartialEq for Capabilities

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Compare self to key and return their ordering.
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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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Checks if this value is equivalent to the given key. Read more
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