fix(protocol): keep the owned spans

miette-derive/src/snippets.rs

@@ -200,14 +200,14 @@ impl Snippets {
             // Context
             let context = &snippet.snippet;
             let context = quote! {
-                context: &self.#context,
+                context: self.#context.clone(),
             };
 
             // Highlights
             let highlights = snippet.highlights.iter().map(|highlight| {
                 let Highlight { highlight } = highlight;
                 quote! {
-                    &self.#highlight
+                    self.#highlight.clone()
                 }
             });
             let highlights = quote! {
@@ -288,7 +288,7 @@ impl Snippets {
                         }
                     };
                     let context = quote! {
-                        context: #context,
+                        context: #context.clone(),
                     };
 
                     // Highlights
@@ -301,7 +301,7 @@ impl Snippets {
                             }
                         };
                         quote! {
-                            #m
+                            #m.clone()
                         }
                     });
                     let highlights = quote! {

src/protocol.rs

@@ -177,11 +177,11 @@ pub struct DiagnosticSnippet<'a> {
     /// A [Source] that can be used to read the actual text of a source.
     pub source: &'a (dyn Source),
     /// The primary [SourceSpan] where this diagnostic is located.
-    pub context: &'a SourceSpan,
+    pub context: SourceSpan,
     /// Additional [SourceSpan]s that mark specific sections of the span, for
     /// example, to underline specific text within the larger span. They're
     /// paired with labels that should be applied to those sections.
-    pub highlights: Option<Vec<&'a SourceSpan>>,
+    pub highlights: Option<Vec<SourceSpan>>,
 }
 
 /**

src/reporter.rs

@@ -33,7 +33,7 @@ impl MietteReporter {
         writeln!(f)?;
         let context_data = snippet
             .source
-            .read_span(snippet.context)
+            .read_span(&snippet.context)
             .map_err(|_| fmt::Error)?;
         let context = std::str::from_utf8(context_data.data()).expect("Bad utf8 detected");
         let mut line = context_data.line();

tests/reporter.rs

@@ -34,8 +34,8 @@ impl Diagnostic for MyBad {
             vec![DiagnosticSnippet {
                 message: Some(self.message.as_ref()),
                 source: &self.src,
-                context: &self.ctx,
+                context: self.ctx.clone(),
-                highlights: Some(vec![&self.highlight]),
+                highlights: Some(vec![self.highlight.clone()]),
             }]
             .into_iter(),
         ))