Trait Expressions 

pub trait Expressions {
    // Required method
    fn evaluate(
        &self,
        expression: &str,
        focus: Option<&Item>,
        variables: &[(String, Item)],
    ) -> impl Future<Output = Result<Vec<Item>, String>>;
}

Evaluates FHIRPath expressions.

Required Methods

fn evaluate( &self, expression: &str, focus: Option<&Item>, variables: &[(String, Item)], ) -> impl Future<Output = Result<Vec<Item>, String>>

Evaluates expression against focus (none for expressions that only use variables). Variables are available as %name.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T: Expressions> Expressions for &T

A shared evaluator: one FHIRPath engine for many transforms.

fn evaluate( &self, expression: &str, focus: Option<&Item>, variables: &[(String, Item)], ) -> impl Future<Output = Result<Vec<Item>, String>>

Implementors

impl Expressions for NoExpressions