JSON Schema representation of error codes omits error code name

[yoshuawuyts]

Summary

I'm not sure if I'd call this a bug per-se, but the JSON Schema representation of the error codes does not include the error code name. The error codes are defined in Rust as follows:

pub enum ErrorCode {
    // Standard errors
    /// Invalid JSON was received by the server.
    /// An error occurred on the server while parsing the JSON text.
    #[schemars(transform = error_code_transform)]
    #[strum(to_string = "Parse error")]
    ParseError, // -32700
    /// The JSON sent is not a valid Request object.
    #[schemars(transform = error_code_transform)]
    #[strum(to_string = "Invalid request")]
    InvalidRequest, // -32600
    /// The method does not exist or is not available.
    #[schemars(transform = error_code_transform)]
    #[strum(to_string = "Method not found")]
    MethodNotFound, // -32601
    /// Invalid method parameter(s).
    #[schemars(transform = error_code_transform)]
    #[strum(to_string = "Invalid params")]
    InvalidParams, // -32602
    ..
}

But in the JSON Schema doc they are surfaced like this:

    "ErrorCode": {
      "anyOf": [
        {
          "const": -32700,
          "description": "**Parse error**: Invalid JSON was received by the server.\nAn error occurred on the server while parsing the JSON text.",
          "format": "int32",
          "type": "integer"
        },
        {
          "const": -32600,
          "description": "**Invalid request**: The JSON sent is not a valid Request object.",
          "format": "int32",
          "type": "integer"
        },
        {
          "const": -32601,
          "description": "**Method not found**: The method does not exist or is not available.",
          "format": "int32",
          "type": "integer"
        },
        {
          "const": -32602,
          "description": "**Invalid params**: Invalid method parameter(s).",
          "format": "int32",
          "type": "integer"
        },
        {
          "const": -32603,
          "description": "**Internal error**: Internal JSON-RPC error.\nReserved for implementation-defined server errors.",
          "format": "int32",
          "type": "integer"
        }
      ],
    }

This is now missing the error code name in a location that a general-purpose tool can parse it. From my limited understanding of JSON Schema, I believe this should probably be able populate the "title" field with the enum variant name (See: JSON Schema 2020-12 meta-data & JSON Schema Core 7.7.1.2). It would be great if this could be added. Thanks!

ACP Version

latest

[yoshuawuyts]

For reference, this is currently the best I'm able to generate when translating the spec to Wasm Interface Types:

variant error-code {
  /// **Parse error**: Invalid JSON was received by the server.
  case-0,
  /// **Invalid request**: The JSON sent is not a valid Request object.
  case-1,
  /// **Method not found**: The method does not exist or is not available.
  case-2,
  /// **Invalid params**: Invalid method parameter(s).
  case-3,
  /// **Internal error**: Internal JSON-RPC error.
  case-4,
  /// **Authentication required**: Authentication is required before this operation can be performed.
  case-5,
  /// **Resource not found**: A given resource, such as a file, was not found.
  case-6,
  /// Other undefined error code.
  case-7(s32),
}