Module file_generator 

File generation and organization functionality

This module handles writing generated code to files and organizing the output structure.

Ergonomic Improvements for Trait Usage

This module implements two key ergonomic improvements for generated FHIR resources:

1. Trait Re-exports in Resource Modules

Each generated resource module (e.g., resources::patient) automatically re-exports its associated traits (PatientMutators, PatientAccessors, PatientExistence). This allows users to import just the resource module and get all necessary traits:

// Before: Required importing from multiple modules
use hl7_fhir_r4_core::resources::patient::Patient;
use hl7_fhir_r4_core::traits::patient::PatientMutators;
use hl7_fhir_r4_core::traits::domain_resource::DomainResourceMutators;
use hl7_fhir_r4_core::traits::resource::ResourceMutators;

// After: Single import gets everything needed
use hl7_fhir_r4_core::resources::patient::{Patient, PatientMutators};
// Note: Parent traits (ResourceMutators, DomainResourceMutators) are trait bounds,
// so they're brought into scope automatically when PatientMutators is used

2. Prelude Module

A prelude module is generated that re-exports commonly used base traits:

use hl7_fhir_r4_core::prelude::*;
use hl7_fhir_r4_core::resources::patient::{Patient, PatientMutators};

// Now all base traits are in scope
let patient = <Patient as PatientMutators>::new()
    .set_id("example".to_string())  // from ResourceMutators
    .set_active(true);               // from PatientMutators

These improvements follow idiomatic Rust patterns used by popular crates like serde, tokio, and diesel, making the generated code more ergonomic and reducing the cognitive load on users.

Structs

FileGenerator

File generator for organizing and writing generated code

Enums

FhirTypeCategory

Classification of FHIR types for organizing into appropriate directories