Extends expects a string and nothing else

askama_derive/src/generator.rs

@@ -200,7 +200,7 @@ fn find_used_templates(
     while let Some((path, source)) = check.pop() {
         for n in parse(&source, input.syntax)? {
             match n {
-                Node::Extends(Expr::StrLit(extends)) => {
+                Node::Extends(extends) => {
                     let extends = input.config.find_template(extends, Some(&path))?;
                     let dependency_path = (path.clone(), extends.clone());
                     if dependency_graph.contains(&dependency_path) {

askama_derive/src/heritage.rs

@@ -2,7 +2,7 @@ use std::collections::HashMap;
 use std::path::{Path, PathBuf};
 
 use crate::config::Config;
-use crate::parser::{Expr, Loop, Macro, Node};
+use crate::parser::{Loop, Macro, Node};
 use crate::CompileError;
 
 pub(crate) struct Heritage<'a> {
@@ -58,7 +58,7 @@ impl Context<'_> {
         while let Some(nodes) = nested.pop() {
             for n in nodes {
                 match n {
-                    Node::Extends(Expr::StrLit(extends_path)) if top => match extends {
+                    Node::Extends(extends_path) if top => match extends {
                         Some(_) => return Err("multiple extend blocks found".into()),
                         None => {
                             extends = Some(config.find_template(extends_path, Some(path))?);

askama_derive/src/parser.rs

@@ -24,7 +24,7 @@ pub(crate) enum Node<'a> {
     Cond(Vec<Cond<'a>>, Ws),
     Match(Ws, Expr<'a>, Vec<When<'a>>, Ws),
     Loop(Loop<'a>),
-    Extends(Expr<'a>),
+    Extends(&'a str),
     BlockDef(Ws, &'a str, Vec<Node<'a>>, Ws),
     Include(Ws, &'a str),
     Import(Ws, &'a str, &'a str),
@@ -985,7 +985,7 @@ fn block_for<'a>(i: &'a str, s: &State<'_>) -> IResult<&'a str, Node<'a>> {
 }
 
 fn block_extends(i: &str) -> IResult<&str, Node<'_>> {
-    let (i, (_, name)) = tuple((ws(keyword("extends")), ws(expr_str_lit)))(i)?;
+    let (i, (_, name)) = tuple((ws(keyword("extends")), ws(str_lit)))(i)?;
     Ok((i, Node::Extends(name)))
 }