diff --git a/src/front/wgsl/mod.rs b/src/front/wgsl/mod.rs
index 511f6b66f9..ba176bc489 100644
--- a/src/front/wgsl/mod.rs
+++ b/src/front/wgsl/mod.rs
@@ -1287,6 +1287,16 @@ pub struct ParseError {
 }
 
 impl ParseError {
+    pub fn labels(&self) -> impl Iterator<Item = (Span, &str)> + ExactSizeIterator + '_ {
+        self.labels
+            .iter()
+            .map(|&(ref span, ref msg)| (span.clone(), msg.as_ref()))
+    }
+
+    pub fn message(&self) -> &str {
+        &self.message
+    }
+
     fn diagnostic(&self) -> Diagnostic<()> {
         let diagnostic = Diagnostic::error()
             .with_message(self.message.to_string())
diff --git a/src/span.rs b/src/span.rs
index f9fb111139..000d09c32b 100644
--- a/src/span.rs
+++ b/src/span.rs
@@ -124,8 +124,12 @@ impl<E> WithSpan<E> {
         self.inner
     }
 
+    pub fn as_inner(&self) -> &E {
+        &self.inner
+    }
+
     /// Iterator over stored [`SpanContext`]s.
-    pub fn spans(&self) -> impl Iterator<Item = &SpanContext> {
+    pub fn spans(&self) -> impl Iterator<Item = &SpanContext> + ExactSizeIterator {
         #[cfg(feature = "span")]
         return self.spans.iter();
         #[cfg(not(feature = "span"))]