add frontmatter benchmark

benches/frontmatter_test_recipe.cook

@@ -0,0 +1,57 @@
+---
+servings: 4
+emoji: 🥟
+tags: warm, fried, starter
+source: CooklangCLI Seed <https://github.com/cooklang/CookCLI/blob/main/seed/Potstickers.cook>
+prep time: 20 min
+cook time: 30 min
+---
+
+[- Same recipe, same metadata. Just in a YAML frontmatter now -]
+
+
+Let's first make some dough. Set kettle with some water and prepare
+@strong white flour{75%g} and @plain flour{75%g}.
+
+Put the flours into a bowl. Mix the @just-boiled water{75%ml} with the
+@salt{2%tsp}, then add this to the flour, mixing it in with a knife. It will
+seem very floury to start with but keep going and it will come together. Don’t
+be tempted to add more water. Cover with a damp cloth for 10 minutes, then
+remove and knead until the dough is smooth and elastic. Cover the dough again
+and leave it to stand somewhere warm for an hour.
+
+Cut the dough into 2 equal pieces and dust your work surface with flour. Roll
+the dough out as thinly as you can. It will be resistant to start with, but you
+will eventually end up with a round about 35cm in diameter and with a thickness
+of less than 1mm.
+
+Cut the dough into rounds using a 9cm cutter, then repeat with the other piece
+of dough. Knead the offcuts together and roll again. You should end up with at
+least 24 discs. Dust with flour in between each one if you want to stack them
+together.
+
+Heat the @olive oil{1%tbsp} in a frying pan and gently cook very finely shredded
+and chopped @Chinese cabbage{100%g}, very finely grated @carrot{50%g} and finely
+chopped @spring onions{3%items} until they have wilted down. Remove from the
+heat and stir in very finely chopped @strained kimchi{75%g}. Taste for seasoning
+and add salt and pepper if you think it necessary. Allow to cool.
+
+Assemble the dumplings by putting a teaspoon of filling in the centre of each
+wrapper. Wet around the sides – thoroughly, as they can sometimes crack – then
+pinch the edges together, pleating from the middle down each side to seal.
+
+Make the dipping sauce by mixing @soy sauce{2%tbsp}, @rice wine vinegar{1%tbsp},
+@chilli oil{1%tbsp} and @sesame oil{1%tsp} together. Taste for seasoning and add
+salt if necessary.
+
+To cook, heat @olive oil{3%tbsp} in a non-stick frying pan that has a lid – you
+need just enough oil to thinly cover the base. Add some of the dumplings, making
+sure they are well spread out.
+
+Fry the dumplings over a medium heat until they are crisp and brown underneath,
+then add water – just enough to thinly cover the base of the pan. Cover the pan
+quickly, as it will spit when you add the water, and steam the dumplings for 5
+minutes, until they are starting to look translucent and the water has
+evaporated. Uncover and cook for a further minute to make sure the underside is
+still crisp. Remove and keep warm while you cook the rest. Serve hot with the
+dipping sauce.

benches/parse.rs

@@ -3,6 +3,7 @@ use criterion::{criterion_group, criterion_main, Criterion};
 use cooklang::{parser::PullParser, CooklangParser, Extensions};
 
 const TEST_RECIPE: &str = include_str!("./test_recipe.cook");
+const FRONTMATTER_RECIPE: &str = include_str!("./frontmatter_test_recipe.cook");
 const COMPLEX_TEST_RECIPE: &str = include_str!("./complex_test_recipe.cook");
 
 fn canonical(c: &mut Criterion) {
@@ -26,6 +27,11 @@ fn canonical(c: &mut Criterion) {
     group.bench_with_input("meta", TEST_RECIPE, |b, input| {
         b.iter(|| extended.parse_metadata(input).is_valid())
     });
+    group.bench_with_input("frontmatter_meta", FRONTMATTER_RECIPE, |b, input| {
+        {
+            b.iter(|| extended.parse_metadata(input).is_valid())
+        }
+    });
 }
 
 fn extended(c: &mut Criterion) {