Struct tvix_eval::NixAttrs

#[repr(transparent)]
pub struct NixAttrs(pub(super) Rc<AttrsRep>);

Tuple Fields

0: Rc<AttrsRep>

Implementations

impl NixAttrs

pub fn empty() -> Self

pub fn ptr_eq(&self, other: &Self) -> bool

Compare two attribute sets by pointer equality. Only makes sense for some attribute set representations, i.e. returning false does not mean that the two attribute sets do not have equal content.

pub fn update(self, other: Self) -> Self

Return an attribute set containing the merge of the two provided sets. Keys from the other set have precedence.

pub fn len(&self) -> usize

Return the number of key-value entries in an attrset.

pub fn is_empty(&self) -> bool

pub fn select<K>(&self, key: &K) -> Option<&Value>

where K: Borrow<BStr> + ?Sized,

Select a value from an attribute set by key.

pub fn select_required<K>(&self, key: &K) -> Result<&Value, ErrorKind>

where K: Borrow<BStr> + ?Sized,

Select a required value from an attribute set by key, return an AttributeNotFound error if it is missing.

pub fn contains<'a, K: 'a>(&self, key: K) -> bool

where &'a BStr: From<K>,

pub fn iter<'a>(&'a self) -> Iter<KeyValue<'a>>

Construct an iterator over all the key-value pairs in the attribute set.

pub fn iter_sorted(&self) -> Iter<KeyValue<'_>>

Same as iter(), but marks call sites which rely on the iteration being lexicographic.

pub fn into_iter_sorted(self) -> OwnedAttrsIterator

Same as IntoIterator::into_iter, but marks call sites which rely on the iteration being lexicographic.

pub fn keys(&self) -> Keys<'_>

Construct an iterator over all the keys of the attribute set

pub fn construct( count: usize, stack_slice: Vec<Value>, ) -> Result<Result<Self, CatchableErrorKind>, ErrorKind>

Implement construction logic of an attribute set, to encapsulate logic about attribute set optimisations inside of this module.

pub(crate) fn from_kv(name: Value, value: Value) -> Self

Construct an optimized “KV”-style attribute set given the value for the "name" key, and the value for the "value" key

Trait Implementations

impl Arbitrary for NixAttrs

type Parameters = Parameters

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = BoxedStrategy<NixAttrs>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(args: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for NixAttrs

fn clone(&self) -> NixAttrs

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NixAttrs

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

Formats the value using the given formatter.

impl Default for NixAttrs

fn default() -> NixAttrs

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for NixAttrs

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<AttrsRep> for NixAttrs

fn from(rep: AttrsRep) -> Self

Converts to this type from the input type.

impl From<BTreeMap<NixString, Value>> for NixAttrs

fn from(map: BTreeMap<NixString, Value>) -> Self

Converts to this type from the input type.

impl<K, V> FromIterator<(K, V)> for NixAttrs

where NixString: From<K>, Value: From<V>,

fn from_iter<T>(iter: T) -> NixAttrs

where T: IntoIterator<Item = (K, V)>,

Creates a value from an iterator.

impl<'a> IntoIterator for &'a NixAttrs

type Item = (&'a NixString, &'a Value)

The type of the elements being iterated over.

type IntoIter = Iter<KeyValue<'a>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl IntoIterator for NixAttrs

type Item = (NixString, Value)

The type of the elements being iterated over.

type IntoIter = OwnedAttrsIterator

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl TotalDisplay for NixAttrs

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