feat(miette): Add miette and derive Diagnostic for Error

Cargo.toml

@@ -14,6 +14,7 @@ rust-version = "1.57.0"
 base64 = "0.21.0"
 digest = "0.10.6"
 hex = "0.4.3"
+miette = "5.5.0"
 serde = { version = "1.0.152", optional = true }
 sha-1 = "0.10.1"
 sha2 = "0.10.6"

src/errors.rs

@@ -1,14 +1,17 @@
+use miette::Diagnostic;
 use thiserror::Error;
 
 use crate::Integrity;
 
 /// Integrity-related error values.
-#[derive(Error, Debug, Clone, PartialEq, Eq)]
+#[derive(Diagnostic, Error, Debug, Clone, PartialEq, Eq)]
 pub enum Error {
     /// Error parsing an SRI string into an Integrity object.
     #[error("Failed to parse subresource integrity string: {0}")]
+    #[diagnostic(code(ssri::parse_integrity_error), url(docsrs))]
     ParseIntegrityError(String),
     /// Error matching two Integrity values.
     #[error("Integrity check failed.\n\tWanted: {0}\n\tActual: {1}")]
+    #[diagnostic(code(ssri::integrity_check_error), url(docsrs))]
     IntegrityCheckError(Integrity, Integrity),
 }