From 56a981bdd80dc1919407b07555187cba6c7554b4 Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Thu, 19 Jan 2023 09:27:42 -0800
Subject: [PATCH] Add `contains` and `intersects` to the component-macro
 bindings for flags. (#5598)

In component-macro, when expanding the bindings for flags types, add
`contains` and `intersects` methods, for convenience.
---
 crates/component-macro/src/component.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crates/component-macro/src/component.rs b/crates/component-macro/src/component.rs
index b87fb6cb3c..b054f993ce 100644
--- a/crates/component-macro/src/component.rs
+++ b/crates/component-macro/src/component.rs
@@ -1114,6 +1114,14 @@ pub fn expand_flags(flags: &Flags) -> Result<TokenStream> {
                 use std::ops::Not;
                 Self::default().not()
             }
+
+            pub fn contains(&self, other: Self) -> bool {
+                *self & other == other
+            }
+
+            pub fn intersects(&self, other: Self) -> bool {
+                *self & other != Self::empty()
+            }
         }
 
         impl std::cmp::PartialEq for #name {