Refactored the directory structure in ./examples for Rust. No code changes. (0.39.16)

examples/rust/rust_hello.fun

@@ -0,0 +1,36 @@
+#!/usr/bin/env fun
+
+/*
+  * This file is part of the Fun programming language.
+  * https://fun-lang.xyz/
+  *
+  * Copyright 2026 Johannes Findeisen <you@hanez.org>
+  * Licensed under the terms of the Apache-2.0 license.
+  * https://opensource.org/license/apache-2-0
+  *
+  * Added: 2026-01-27
+  */
+
+/*
+  * Rust-backed opcode demo: rust_hello()
+  *
+  * Build instructions:
+  *   - Default builds disable Rust integration.
+  *   - Enable it via: cmake -S . -B build_debug -DFUN_WITH_RUST=ON
+  *   - Then: cmake --build build_debug --target fun
+  *
+  * Run:
+  *   build_debug/fun examples/rust_hello.fun
+  *
+  * Expected output (with FUN_WITH_RUST=ON):
+  *   Hello from Rust ops!
+  *
+  * If built without Rust, calling rust_hello() will raise a runtime error
+  * explaining that Rust integration is disabled.
+  */
+
+print(rust_hello())
+
+/* Expected output:
+Hello from Rust ops!
+*/

examples/rust/rust_hello_args.fun

@@ -0,0 +1,37 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Copyright 2026 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ *
+ * Added: 2026-01-28
+ */
+
+/*
+ * Rust-backed opcode demo with argument: rust_hello_args(STRING)
+ *
+ * Build instructions:
+ *   - Rust integration is optional. Enable via:
+ *       cmake -S . -B build_debug -DFUN_WITH_RUST=ON
+ *   - Then build:
+ *       cmake --build build_debug --target fun
+ *
+ * Run:
+ *   build_debug/fun examples/rust_hello_args.fun
+ *
+ * Expected output (with FUN_WITH_RUST=ON):
+ *   Hello from Fun to Rust!
+ *
+ * Note:
+ *   The opcode prints from Rust and returns Nil, so there's nothing to print afterwards.
+ */
+
+rust_hello_args("Hello from Fun to Rust!")
+
+/* Expected output:
+Hello from Fun to Rust!
+*/ 

examples/rust/rust_hello_args_return.fun

@@ -0,0 +1,34 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Copyright 2026 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ *
+ * Added: 2026-01-29
+ */
+
+/*
+ * Rust-backed opcode demo with argument: rust_hello_args_return(STRING)
+ * This variant does NOT print from Rust; it only returns the provided string
+ * back to Fun for assignment or further processing.
+ *
+ * Build instructions:
+ *   - Enable Rust integration:
+ *       cmake -S . -B build_debug -DFUN_WITH_RUST=ON
+ *   - Then build:
+ *       cmake --build build_debug --target fun
+ *
+ * Run:
+ *   build_debug/fun examples/rust_hello_args_return.fun
+ */
+
+msg = rust_hello_args_return("Hello back from Rust (no print)!")
+print(msg)
+
+/* Expected output:
+Hello back from Rust (no print)!
+*/