fhir 1.2.0

Fast Healthcare Interoperability Resources (FHIR) data model for Rust: the complete FHIR R5, R4, and R3 resources, datatypes, and code systems as serde-serializable types, plus a spec-driven code generator.
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//! Support for the generated R4 resource/datatype builders.
//!
//! `#[derive(fhir_derive_macros::Builder)]` generates a `<Type>Builder` with a
//! chainable setter per field and a `build()` that returns
//! [`Result<T, BuilderError>`], failing if a required (`1..1`) field was not set.
//! Optional (`0..1`) and repeating fields default to absent/empty.
//!
//! [`BuilderError`] itself is release-independent, so it is defined once in
//! [`crate::builder`]; this module re-exports it so R4 code can use
//! `fhir::r4::builder::BuilderError`.
//!
//! ```
//! use fhir::r4::resources::Observation;
//! use fhir::r4::coded::Coded;
//! use fhir::r4::codes::ObservationStatus;
//! use fhir::r4::types::CodeableConcept;
//!
//! // `status` and `code` are required (1..1); omitting them fails build().
//! assert!(Observation::builder().build().is_err());
//!
//! let obs = Observation::builder()
//!     .status(Coded::Known(ObservationStatus::Final))
//!     .code(CodeableConcept::default())
//!     .build()
//!     .expect("both required fields set");
//! assert!(matches!(obs.status, Coded::Known(ObservationStatus::Final)));
//! ```

pub use crate::builder::BuilderError;