Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/third_party/rust/naga/src/front/wgsl/mod.rs b/third_party/rust/naga/src/front/wgsl/mod.rs
new file mode 100644
index 0000000000..b6151fe1c0
--- /dev/null
+++ b/third_party/rust/naga/src/front/wgsl/mod.rs
@@ -0,0 +1,49 @@
+/*!
+Frontend for [WGSL][wgsl] (WebGPU Shading Language).
+
+[wgsl]: https://gpuweb.github.io/gpuweb/wgsl.html
+*/
+
+mod error;
+mod index;
+mod lower;
+mod parse;
+#[cfg(test)]
+mod tests;
+mod to_wgsl;
+
+use crate::front::wgsl::error::Error;
+use crate::front::wgsl::parse::Parser;
+use thiserror::Error;
+
+pub use crate::front::wgsl::error::ParseError;
+use crate::front::wgsl::lower::Lowerer;
+use crate::Scalar;
+
+pub struct Frontend {
+    parser: Parser,
+}
+
+impl Frontend {
+    pub const fn new() -> Self {
+        Self {
+            parser: Parser::new(),
+        }
+    }
+
+    pub fn parse(&mut self, source: &str) -> Result<crate::Module, ParseError> {
+        self.inner(source).map_err(|x| x.as_parse_error(source))
+    }
+
+    fn inner<'a>(&mut self, source: &'a str) -> Result<crate::Module, Error<'a>> {
+        let tu = self.parser.parse(source)?;
+        let index = index::Index::generate(&tu)?;
+        let module = Lowerer::new(&index).lower(&tu)?;
+
+        Ok(module)
+    }
+}
+
+pub fn parse_str(source: &str) -> Result<crate::Module, ParseError> {
+    Frontend::new().parse(source)
+}