39 lines
947 B
Standard ML
Executable file
39 lines
947 B
Standard ML
Executable file
#!/usr/bin/env fun
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/*
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2026 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*
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* Added: 2026-01-29
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*/
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/*
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* Rust-backed VM access demo:
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* - rust_get_sp() -> reads vm.sp (stack pointer) using raw pointer + offset from Rust
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* - rust_set_exit(N) -> writes vm.exit_code = N from Rust
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*/
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print("[Rust VM access demo]")
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/* Read vm.sp via Rust and print it */
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print("vm.sp (from Rust) = " + to_string(rust_get_sp()))
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/* Write vm.exit_code via Rust (not directly observable without VM inspection) */
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print("Setting vm.exit_code to 42 via Rust...")
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rust_set_exit(42)
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print("Now exiting...")
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/* Expected output:
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[Rust VM access demo]
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vm.sp (from Rust) = 0
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Setting vm.exit_code to 42 via Rust...
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Now exiting...
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*/
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// "echo $?" will show the exit code:
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// 42
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