Struct Assignments 

pub struct Assignments(/* private fields */);

Two-level map: element name → parameter name → value.

Construction via Self::new enforces:

• For every (element, param) → value entry, value.provenance().parameter == param. No silently mis-addressed values.
• No element appears with an empty inner map.

BTreeMap iteration order is natural, so trial canonical bytes (and anything else that walks the assignments) see stable ordering without extra sorting.

Implementations

impl Assignments

pub fn empty() -> Self

Empty assignments map.

pub fn new( map: BTreeMap<ElementName, BTreeMap<ParameterName, Value>>, ) -> Result<Self, TrialError>

Construct from a pre-built map, validating invariants.

pub fn get( &self, element: &ElementName, param: &ParameterName, ) -> Option<&Value>

Look up one (element, parameter) binding.

pub fn for_element( &self, element: &ElementName, ) -> Option<&BTreeMap<ParameterName, Value>>

Borrow the inner parameter map for an element.

pub fn iter( &self, ) -> impl Iterator<Item = (&ElementName, &ParameterName, &Value)>

Sorted iterator over (element, parameter, value) triples.

pub fn len(&self) -> usize

Total assignment count across every element.

pub fn is_empty(&self) -> bool

true when the map has no entries.

pub fn element_count(&self) -> usize

Number of distinct elements covered.

Trait Implementations

impl Clone for Assignments

fn clone(&self) -> Assignments

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Assignments

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

Formats the value using the given formatter.

impl Default for Assignments

fn default() -> Assignments

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Assignments

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Assignments

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for Assignments

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Assignments