From 9e7fe8f2f9344d171800f98b556751d981ff9b17 Mon Sep 17 00:00:00 2001
From: René Kijewski <kijewski@library.vetmed.fu-berlin.de>
Date: Fri, 16 Jul 2021 16:14:30 +0200
Subject: Allow using "with" keyword in "let" statements

Askama uses the syntax `{% when Variant with (parameters) %}` in
`{% match %}` blocks.

This change allows the optional use of the keyword "with" in "let" and
"if let" statements, too.
---
 askama_shared/src/parser.rs        |  1 +
 testing/tests/let_destructoring.rs | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/askama_shared/src/parser.rs b/askama_shared/src/parser.rs
index 261887b..d2b2cd1 100644
--- a/askama_shared/src/parser.rs
+++ b/askama_shared/src/parser.rs
@@ -442,6 +442,7 @@ fn target(i: &[u8]) -> IResult<&[u8], Target<'_>> {
     // match structs
     let (i, path) = opt(path)(i)?;
     if let Some(path) = path {
+        let (i, _) = opt(ws(tag("with")))(i)?;
         let (i, is_unnamed_struct) = opt_opening_paren(i)?;
         if is_unnamed_struct {
             let (i, targets) = alt((
diff --git a/testing/tests/let_destructoring.rs b/testing/tests/let_destructoring.rs
index 20f7fff..5cb7ae4 100644
--- a/testing/tests/let_destructoring.rs
+++ b/testing/tests/let_destructoring.rs
@@ -105,3 +105,17 @@ fn test_let_destruct_with_path() {
     };
     assert_eq!(t.render().unwrap(), "hello");
 }
+
+#[derive(Template)]
+#[template(source = "{% let some::path::Struct with (v) = v %}{{v}}", ext = "txt")]
+struct LetDestructoringWithPathAndWithKeyword<'a> {
+    v: some::path::Struct<'a>,
+}
+
+#[test]
+fn test_let_destruct_with_path_and_with_keyword() {
+    let t = LetDestructoringWithPathAndWithKeyword {
+        v: some::path::Struct("hello"),
+    };
+    assert_eq!(t.render().unwrap(), "hello");
+}
-- 
cgit