How to rename enum variants?

Read typify-impl/src/util.rs around line 756 and the build.rs settings using TypeSpacePatch::with_rename. Reproduce the schema generation shown in the issue; done means the generated Operator enum has unique valid Rust variant names and the project builds.

Hey,

I tried to use typify to create types from my json schema. Currently, I'm creating my types via build.rs.

Here you see the result, which is created:

///xx
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "xx",
///  "type": "string",
///  "enum": [
///    "=",
///    "!=",
///    "in",
///    "out",
///    "<",
///    ">",
///    "<=",
///    ">=",
///    "contains"
///  ],
///  "example": "="
///}
/// ```
/// </details>
#[derive(
    ::serde::Deserialize,
    ::serde::Serialize,
    Clone,
    Copy,
    Debug,
    Eq,
    Hash,
    Ord,
    PartialEq,
    PartialOrd
)]
pub enum Operator {
    #[serde(rename = "=")]
    X,
    #[serde(rename = "!=")]
    X,
    #[serde(rename = "in")]
    In,
    #[serde(rename = "out")]
    Out,
    #[serde(rename = "<")]
    X,
    #[serde(rename = ">")]
    X,
    #[serde(rename = "<=")]
    X,
    #[serde(rename = ">=")]
    X,
    #[serde(rename = "contains")]
    Contains,
}

As you see, my enum (which I sadly cannot change) has values like "=", "!=" etc., which are invalid rust identifier. Therefor, typify will replace it with an capital X. The issue is now, that my enum have multiple variants which called X. Therefor, the following won't work as designed and by build fails:

impl ::std::fmt::Display
for CrmDiscountCustomerConditionsSelectionsItemConditionsItemOperator {
    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
        match *self {
            Self::X => write!(f, "="),
            Self::X => write!(f, "!="),
            Self::In => write!(f, "in"),
            Self::Out => write!(f, "out"),
            Self::X => write!(f, "<"),
            Self::X => write!(f, ">"),
            Self::X => write!(f, "<="),
            Self::X => write!(f, ">="),
            Self::Contains => write!(f, "contains"),
        }
    }
}

How can I rename my enum variants? I tired the following:

    let mut settings = TypeSpaceSettings::default();
    settings.with_derive(String::from("PartialEq"));
    settings.with_derive(String::from("Debug"));
    settings.with_derive(String::from("Clone"));
    settings.with_patch(
        "Operator::=",
        TypeSpacePatch::default().with_rename("OperatorEq".to_owned()),
    );

    let mut type_space = TypeSpace::new(&settings);
    type_space.add_root_schema(schema).unwrap();

    let output = prettyplease::unparse(&syn::parse2::<syn::File>(type_space.to_stream()).unwrap());

    let mut out_file = std::path::Path::new(&out_dir).to_path_buf();
    out_file.push("schema.rs");
    std::fs::write(out_file, output).unwrap();

Thanks!

see: https://github.com/oxidecomputer/typify/blob/6ba620b76767a3ca64da9584144d3fce2a419a50/typify-impl/src/util.rs#L756