Struct Expression 

pub struct Expression {
    pub id: Option<String>,
    pub extension: Option<Vec<Box<Extension>>>,
    pub description: Option<Box<FHIRString>>,
    pub name: Option<Box<FHIRId>>,
    pub language: Box<FHIRCode>,
    pub expression: Option<Box<FHIRString>>,
    pub reference: Option<Box<FHIRUri>>,
}

A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.

Fields

id: Option<String>

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

extension: Option<Vec<Box<Extension>>>

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

description: Option<Box<FHIRString>>

A brief, natural language description of the condition that effectively communicates the intended semantics.

name: Option<Box<FHIRId>>

A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.

language: Box<FHIRCode>

The media type of the language for the expression.

expression: Option<Box<FHIRString>>

An expression in the specified language that returns a value.

reference: Option<Box<FHIRUri>>

A URI that defines where the expression is found.

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expression

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

Formats the value using the given formatter.

impl Default for Expression

fn default() -> Expression

Returns the “default value” for a type.

impl FHIRJSONDeserializer for Expression

fn from_json_str(s: &str) -> Result<Self, DeserializeError>

fn from_serde_value( obj: *mut Value, context: Context<'_>, ) -> Result<Self, DeserializeError>

impl FHIRJSONSerializer for Expression

fn serialize_value( &self, writer: &mut dyn Write, ) -> Result<bool, SerializeError>

fn serialize_extension( &self, writer: &mut dyn Write, ) -> Result<bool, SerializeError>

fn serialize_field( &self, field: &str, writer: &mut dyn Write, ) -> Result<bool, SerializeError>

fn is_fp_primitive(&self) -> bool

impl MetaValue for Expression

fn fields(&self) -> Vec<&'static str>

fn get_field<'a>(&'a self, field: &str) -> Option<&'a dyn MetaValue>

fn get_field_mut<'a>(&'a mut self, field: &str) -> Option<&'a mut dyn MetaValue>

fn get_index_mut<'a>( &'a mut self, index: usize, ) -> Option<&'a mut dyn MetaValue>

fn get_index<'a>(&'a self, _index: usize) -> Option<&'a dyn MetaValue>

fn typename(&self) -> &'static str

fn as_any(&self) -> &dyn Any

fn flatten(&self) -> Vec<&dyn MetaValue>