codegen: Make template metadata entry mandatory

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/codegen.rs b/src/codegen.rs
index ca70bcf..0cb63fe 100644
--- a/src/codegen.rs
+++ b/src/codegen.rs
@@ -13,10 +13,10 @@ use anyhow::Result;
 
 /// Return the requested template specification.
 pub fn template_spec(templates: &Path, doc: &Document) -> Result<TemplateSpec> {
-    let template = match doc.meta().template_name() {
-        Some(x) => &x,
-        None => "python",
-    };
+    let template = doc
+        .meta()
+        .template_name()
+        .ok_or(SubplotError::MissingTemplate)?;
 
     let mut filename = templates.to_path_buf();
     filename.push(Path::new(template));