GraphQL Parser

Documentation | Github | Crate

A parser, formatter and AST for graphql query and schema definition language for rust.

Supported extensions:

1. Subscriptions
2. Block (triple quoted) strings

License

Licensed under either of

• Apache License, Version 2.0, (./LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (./LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

Graphql Parser

This library contains full parser and formatter of the graphql query language as well as AST types.

Docs | Github | Crate

Current this library supports full graphql syntax, and the following extensions:

1. Subscriptions
2. Block (triple quoted) strings
3. Schema definition language a/k/a IDL (which is still in RFC)

Example: Parse and Format Query

use graphql_parser::query::{parse_query, ParseError};

let ast = parse_query::<&str>("query MyQuery { field1, field2 }")?;
// Format canonical representation
assert_eq!(format!("{}", ast), "\
query MyQuery {
  field1
  field2
}
");

Example: Parse and Format Schema

use graphql_parser::schema::{parse_schema, ParseError};

let ast = parse_schema::<String>(r#"
    schema {
        query: Query
    }
    type Query {
        users: [User!]!,
    }
    """
       Example user object

       This is just a demo comment.
    """
    type User {
        name: String!,
    }
"#)?.to_owned();
// Format canonical representation
assert_eq!(format!("{}", ast), "\
schema {
  query: Query
}

type Query {
  users: [User!]!
}

\"\"\"
  Example user object

  This is just a demo comment.
\"\"\"
type User {
  name: String!
}
");