refactor: reimpl. ImplementedLanguageExtension::all w/ `strum::Vari…

…antArray`

Signed-off-by: sagudev <[email protected]>

naga/Cargo.toml

@@ -75,6 +75,7 @@ codespan-reporting = { version = "0.11.0" }
 rustc-hash.workspace = true
 indexmap.workspace = true
 log = "0.4"
+strum.workspace = true
 spirv = { version = "0.3", optional = true }
 thiserror.workspace = true
 serde = { version = "1.0.217", features = ["derive"], optional = true }
@@ -102,4 +103,3 @@ ron = "0.8.0"
 rspirv = { version = "0.11", git = "https://github.com/gfx-rs/rspirv", rev = "b969f175d5663258b4891e44b76c1544da9661ab" }
 serde = { workspace = true, features = ["derive"] }
 spirv = { version = "0.3", features = ["deserialize"] }
-strum.workspace = true

naga/src/front/wgsl/parse/directive/language_extension.rs

@@ -2,6 +2,8 @@
 //!
 //! The focal point of this module is the [`LanguageExtension`] API.
 
+use strum::VariantArray;
+
 /// A language extension recognized by Naga, but not guaranteed to be present in all environments.
 ///
 /// WGSL spec.: <https://www.w3.org/TR/WGSL/#language-extensions-sec>
@@ -61,15 +63,13 @@ impl LanguageExtension {
 }
 
 /// A variant of [`LanguageExtension::Implemented`].
-#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, VariantArray)]
 pub enum ImplementedLanguageExtension {}
 
 impl ImplementedLanguageExtension {
-    const ALL: [ImplementedLanguageExtension; 0] = [];
-
     /// Returns slice of all variants of [`ImplementedLanguageExtension`].
     pub const fn all() -> &'static [Self] {
-        &Self::ALL
+        Self::VARIANTS
     }
 
     /// Maps this [`ImplementedLanguageExtension`] into the sentinel word associated with it in WGSL.