Simplify driver error example

Cargo.toml

@@ -62,8 +62,6 @@ tracing-subscriber = "0.3.16"
 tracing-error = "0.2.0"
 color-eyre = "0.6.2"
 tracing-forest = { version = "0.1.5", features = ["ansi"] }
-displaydoc = "0.2.4"
-enum-tag = "0.3.0"
 
 [[bench]]
 name = "image_array"

src/errors.rs

@@ -38,29 +38,29 @@ impl ASCOMErrorCode {
  ///
  /// # Example
  ///
- /// The following example defines an error enum using [`displaydoc`] for error messages and
- /// [`enum_tag`] for error codes.
- ///
  /// ```
  /// use ascom_alpaca::{ASCOMError, ASCOMErrorCode};
- /// use displaydoc::Display;
- /// use enum_tag::EnumTag;
  /// use thiserror::Error;
  ///
- /// #[derive(Debug, Display, EnumTag, Error)]
- /// #[repr(u16)]
+ /// #[derive(Debug, Error)]
  /// pub enum MyDriverError {
- /// /// Port communication error: {0}
- /// PortError(std::io::Error) = 0,
- /// /// Initialization error: {0}
- /// InitializationError(String) = 1,
+ /// #[error("Port communication error: {0}")]
+ /// PortError(#[from] std::io::Error),
+ /// #[error("Initialization error: {0}")]
+ /// InitializationError(String),
  /// }
  ///
  /// // this allows you to then use `my_driver.method()?` when implementing Alpaca traits
  /// // and it will convert your driver error to an ASCOM error automatically
  /// impl From<MyDriverError> for ASCOMError {
  /// fn from(error: MyDriverError) -> Self {
- /// ASCOMError::new(ASCOMErrorCode::new_for_driver(error.tag() as u16), error)
+ /// ASCOMError::new(
+ /// ASCOMErrorCode::new_for_driver(match error {
+ /// MyDriverError::PortError(_) => 0,
+ /// MyDriverError::InitializationError(_) => 1,
+ /// }),
+ /// error,
+ /// )
  /// }
  /// }
  /// ```