1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/miette/src/named_source.rs b/vendor/miette/src/named_source.rs
new file mode 100644
index 0000000..31ad1d1
--- /dev/null
+++ b/vendor/miette/src/named_source.rs
@@ -0,0 +1,61 @@
+use crate::{MietteError, MietteSpanContents, SourceCode, SpanContents};
+
+/// Utility struct for when you have a regular [`SourceCode`] type that doesn't
+/// implement `name`. For example [`String`]. Or if you want to override the
+/// `name` returned by the `SourceCode`.
+pub struct NamedSource {
+    source: Box<dyn SourceCode + 'static>,
+    name: String,
+}
+
+impl std::fmt::Debug for NamedSource {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("NamedSource")
+            .field("name", &self.name)
+            .field("source", &"<redacted>");
+        Ok(())
+    }
+}
+
+impl NamedSource {
+    /// Create a new `NamedSource` using a regular [`SourceCode`] and giving
+    /// its returned [`SpanContents`] a name.
+    pub fn new(name: impl AsRef<str>, source: impl SourceCode + Send + Sync + 'static) -> Self {
+        Self {
+            source: Box::new(source),
+            name: name.as_ref().to_string(),
+        }
+    }
+
+    /// Gets the name of this `NamedSource`.
+    pub fn name(&self) -> &str {
+        &self.name
+    }
+
+    /// Returns a reference the inner [`SourceCode`] type for this
+    /// `NamedSource`.
+    pub fn inner(&self) -> &(dyn SourceCode + 'static) {
+        &*self.source
+    }
+}
+
+impl SourceCode for NamedSource {
+    fn read_span<'a>(
+        &'a self,
+        span: &crate::SourceSpan,
+        context_lines_before: usize,
+        context_lines_after: usize,
+    ) -> Result<Box<dyn SpanContents<'a> + 'a>, MietteError> {
+        let contents = self
+            .inner()
+            .read_span(span, context_lines_before, context_lines_after)?;
+        Ok(Box::new(MietteSpanContents::new_named(
+            self.name.clone(),
+            contents.data(),
+            *contents.span(),
+            contents.line(),
+            contents.column(),
+            contents.line_count(),
+        )))
+    }
+}