From d1333a3402846002e45c8589ea542fc50cf88183 Mon Sep 17 00:00:00 2001
From: jclmnop <jcheshire@protonmail.com>
Date: Sun, 22 Jan 2023 12:37:40 +0000
Subject: [PATCH] modify component attribute macro to allow snake_case fn names

---
 .gitignore                    |  1 +
 leptos/tests/ssr.rs           | 34 ++++++++++++++++++++++++++++++++++
 leptos_macro/Cargo.toml       |  1 +
 leptos_macro/src/component.rs | 12 +++++++++++-
 4 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index fbe21a725..d6359fc3d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ blob.rs
 Cargo.lock
 **/*.rs.bk
 .DS_Store
+.idea
diff --git a/leptos/tests/ssr.rs b/leptos/tests/ssr.rs
index d9bdc3d20..ddf1bdb7d 100644
--- a/leptos/tests/ssr.rs
+++ b/leptos/tests/ssr.rs
@@ -55,6 +55,40 @@ fn ssr_test_with_components() {
     });
 }
 
+#[cfg(not(any(feature = "csr", feature = "hydrate")))]
+#[test]
+fn ssr_test_with_snake_case_components() {
+    use leptos::*;
+
+    #[component]
+    fn snake_case_counter(cx: Scope, initial_value: i32) -> impl IntoView {
+        let (value, set_value) = create_signal(cx, initial_value);
+        view! {
+            cx,
+            <div>
+                <button on:click=move |_| set_value.update(|value| *value -= 1)>"-1"</button>
+                <span>"Value: " {move || value.get().to_string()} "!"</span>
+                <button on:click=move |_| set_value.update(|value| *value += 1)>"+1"</button>
+            </div>
+        }
+    }
+
+    _ = create_scope(create_runtime(), |cx| {
+        let rendered = view! {
+            cx,
+            <div class="counters">
+                <SnakeCaseCounter initial_value=1/>
+                <SnakeCaseCounter initial_value=2/>
+            </div>
+        };
+
+        assert_eq!(
+            rendered.into_view(cx).render_to_string(cx),
+            "<div id=\"_0-1\" class=\"counters\"><!--hk=_0-1-0o|leptos-snake-case-counter-start--><div id=\"_0-1-1\"><button id=\"_0-1-2\">-1</button><span id=\"_0-1-3\">Value: <!--hk=_0-1-4o|leptos-dyn-child-start-->1<!--hk=_0-1-4c|leptos-dyn-child-end-->!</span><button id=\"_0-1-5\">+1</button></div><!--hk=_0-1-0c|leptos-snake-case-counter-end--><!--hk=_0-1-5-0o|leptos-snake-case-counter-start--><div id=\"_0-1-5-1\"><button id=\"_0-1-5-2\">-1</button><span id=\"_0-1-5-3\">Value: <!--hk=_0-1-5-4o|leptos-dyn-child-start-->2<!--hk=_0-1-5-4c|leptos-dyn-child-end-->!</span><button id=\"_0-1-5-5\">+1</button></div><!--hk=_0-1-5-0c|leptos-snake-case-counter-end--></div>"
+        );
+    });
+}
+
 #[cfg(not(any(feature = "csr", feature = "hydrate")))]
 #[test]
 fn test_classes() {
diff --git a/leptos_macro/Cargo.toml b/leptos_macro/Cargo.toml
index 9c3d7d196..61be4d48e 100644
--- a/leptos_macro/Cargo.toml
+++ b/leptos_macro/Cargo.toml
@@ -27,6 +27,7 @@ leptos_dom = { workspace = true }
 leptos_reactive = { workspace = true }
 leptos_server = { workspace = true }
 lazy_static = "1.4"
+convert_case = "0.6.0"
 
 [dev-dependencies]
 log = "0.4"
diff --git a/leptos_macro/src/component.rs b/leptos_macro/src/component.rs
index d1c5dbd0f..46784213b 100644
--- a/leptos_macro/src/component.rs
+++ b/leptos_macro/src/component.rs
@@ -1,3 +1,4 @@
+use convert_case::{Case::{Snake, Pascal}, Casing};
 use itertools::Itertools;
 use proc_macro2::{Ident, TokenStream};
 use quote::{format_ident, ToTokens, TokenStreamExt};
@@ -75,7 +76,7 @@ impl Parse for Model {
             is_transparent: false,
             docs,
             vis: item.vis.clone(),
-            name: item.sig.ident.clone(),
+            name: convert_from_snake_case(&item.sig.ident),
             scope_name,
             props,
             ret: item.sig.output.clone(),
@@ -97,6 +98,15 @@ fn drain_filter<T>(vec: &mut Vec<T>, mut some_predicate: impl FnMut(&mut T) -> b
     }
 }
 
+fn convert_from_snake_case(name: &Ident) -> Ident {
+    let name_str = name.to_string();
+    if !name_str.is_case(Snake) {
+        name.clone()
+    } else {
+        Ident::new(&*name_str.to_case(Pascal), name.span().clone())
+    }
+}
+
 impl ToTokens for Model {
     fn to_tokens(&self, tokens: &mut TokenStream) {
         let Self {