Enum ConstantValue 

pub enum ConstantValue {
    String(String),
    Code(String),
    Identifier(String),
    Base64Binary(String),
    Markdown(String),
    Boolean(bool),
    Integer(i64),
    PositiveInt(i64),
    UnsignedInt(i64),
    Integer64(i64),
    Decimal(String),
    Date(String),
    DateTime(String),
    Time(String),
    Instant(String),
}

Neutral SoF constant value covering every value[X] primitive family the SoF v2 spec allows for ViewDefinition.constant[].

Stringly typed for the date/time/decimal families so engines can preserve the lexical form (decimal precision; pre-prefixed @/@T literals).

Variants

String(String)

valueString.

Code(String)

valueCode — bound as text in FHIRPath/SQL.

Identifier(String)

valueId, valueUri, valueUrl, valueOid, valueUuid, valueCanonical — all bind as text.

Base64Binary(String)

valueBase64Binary.

Markdown(String)

valueMarkdown (currently only surfaced from the JSON path; no typed variant exists in any FHIR version’s ViewDefinitionConstantValue yet).

Boolean(bool)

valueBoolean.

Integer(i64)

valueInteger.

PositiveInt(i64)

valuePositiveInt (FHIR 1..*) — surfaces as Integer in FHIRPath.

UnsignedInt(i64)

valueUnsignedInt (FHIR 0..*) — surfaces as Integer in FHIRPath.

Integer64(i64)

valueInteger64 (R5+). Surfaces as Integer64 in FHIRPath.

Decimal(String)

valueDecimal — kept as its lexical form so precision survives the trip through FHIRPath / SQL parameter binding.

Date(String)

valueDate.

DateTime(String)

valueDateTime — may or may not be @-prefixed; normalised in Self::to_evaluation_result.

Time(String)

valueTime — may or may not be @T-prefixed; normalised in Self::to_evaluation_result.

Instant(String)

valueInstant — surfaces as EvaluationResult::DateTime tagged with FHIR instant.

Implementations

impl ConstantValue

pub fn to_evaluation_result(&self) -> Result<EvaluationResult, SofError>

Renders this constant as an EvaluationResult for the in-process FHIRPath evaluator. Handles @ / @T literal prefixing and decimal precision parsing. Returns Err only when a Self::Decimal lexical form fails to parse.

Trait Implementations

impl Clone for ConstantValue

fn clone(&self) -> ConstantValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstantValue

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

Formats the value using the given formatter.

impl PartialEq for ConstantValue

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