# Atelier: crate atelier_json

Provides the ability to read and write [Smithy](https://github.com/awslabs/smithy) models in the JSON AST representation.

[![crates.io](https://img.shields.io/crates/v/atelier_json.svg)](https://crates.io/crates/atelier_json)
[![docs.rs](https://docs.rs/atelier_json/badge.svg)](https://docs.rs/atelier_json)

# Example


The following demonstrates the `JsonReader` to parse a model.

```rust
use atelier_core::io::read_model_from_string;
use atelier_json::JsonReader;

let mut reader = JsonReader::default();
let result = read_model_from_string(&mut reader, JSON);
if result.is_err() {
    println!("{:?}", result);
}
assert!(result.is_ok());
println!("{:#?}", result.unwrap());
```


## Changes

**Version 0.2.7**

* Fixed bug: [JsonWriter puts metadata as a child of 'shapes' but it should be top-level](https://github.com/johnstonskj/rust-atelier/issues/34)

**Version 0.2.6**

* Changed the ID on MemberShape from ShapeID to Identifier. This matches both the formal BNF for the Smithy IDL and the
  JSON AST usage.
  
**Version 0.2.5**

* New Feature: [make a public api for converting Model to json-ast model](https://github.com/johnstonskj/rust-atelier/issues/32).
* Added all snippets from section 17 of the specification as test cases.
* Fixed bugs in reader for handling member traits.

**Version 0.2.4**

* From core: Reorganized errors, made the naming and messages consistent and removed unused.

**Version 0.2.3**

* Supporting the core model builders which now use TryFrom instead of From.
* Support the "renames" collection added to service shapes in the abstract model.
* Using new shared atelier-test crate.

**Version 0.2.2**

* Updated due to trait API changes in core.

**Version 0.2.1**

* Changes based on new core traits `HasIdentity` and `HasTraits`.

**Version 0.2.0**

* Major refactor after agreement on the separation of semantic model with Smithy team.

**Version 0.1.4**

* API changes for `ModelReader` and `ModelWriter`.
  * removed `representation` method
  * added `FILE_EXTENSION` constant.

**Version 0.1.3**

* Changes to the core API around `ModelReader` and `ModelWriter`.

**Version 0.1.2**

* Fixed issue in ID->Shape mapping.
* Fixed issue with missing `members` on structure and union shapes.
* Added a set of JSON files from the AWS repository as parser tests.
* Renamed integration test names for easier reporting. 

**Version 0.1.1**

* Able to read a JSON representation.

**Version 0.1.0**

* First release.
* Able to write the example weather service, constructed using the builder API.

## TODO

None.