Add "Coccinelle for Rust" page

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Author: JuliaLawall

SUMMARY.md

@@ -22,6 +22,8 @@
 
 ## Tools
 
+  - [Coccinelle for Rust](Coccinelle-for-Rust.md)
+
 ## Users
 
   - [NVMe Driver](NVMe-driver.md)

src/Coccinelle-for-Rust.md

@@ -0,0 +1,37 @@
+# Coccinelle for Rust
+
+Coccinelle is a tool for automatic program matching and transformation that
+was originally developed for making large scale changes to the Linux kernel
+source code (ie, C code).  Matches and transformations are driven by
+user-specific transformation rules having the form of abstracted patches,
+referred to as semantic patches. As the Linux kernel, and systems software
+more generally, is starting to adopt Rust, we are developing Coccinelle for
+Rust, to make the power of Coccinelle available to Rust codebases.
+
+## Examples
+
+Changing a method call sequence in the Rust implementation:
+
+![Changing a method call sequence in the Rust implementation](Coccinelle-for-Rust/tcx.png)
+
+Merging some lifetimes in tokio:
+
+![Merging some lifetimes in tokio](Coccinelle-for-Rust/tokio.png)
+
+## Current status
+
+Coccinelle for Rust is currently a prototype.  It relies on Rust Analyzer
+for parsing and rustfmt for pretty printing.  It mainly supports matching
+and transformation of expressions and types, but reasoning about control
+flow is not yet supported.
+
+## Availability
+
+[Coccinelle for Rust](https://gitlab.inria.fr/coccinelle/coccinelleforrust.git)
+
+[A recent talk about Coccinelle for Rust](https://gitlab.inria.fr/coccinelle/coccinelleforrust/-/blob/main/talks/rfl.pdf)
+
+## Contact
+
+- Julia Lawall: [Julia.Lawall@inria.fr](mailto:Julia.Lawall@inria.fr)
+- Tathagata Roy: [tathagata.roy1278@gmail.com](mailto:tathagata.roy1278@gmail.com)