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Some more Fun VM and Rust interaction. (0.38.2)

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This commit is contained in:
Johannes Findeisen 2026-01-29 02:53:14 +01:00
commit c2e7f3869e
17 changed files with 251 additions and 46 deletions
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36
src/vm/rust/hello_args.c Normal file
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/*
* 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 FFI demo opcode with argument: OP_RUST_HELLO_ARGS
* Pops a string from the stack and asks Rust to print it. Pushes Nil.
*/
case OP_RUST_HELLO_ARGS: {
#ifdef FUN_WITH_RUST
Value vmsg = pop_value(vm);
char *msg = value_to_string_alloc(&vmsg);
free_value(vmsg);
if (msg) {
fun_rust_print_string(msg);
free(msg);
} else {
fun_rust_print_string("");
}
push_value(vm, make_nil());
#else
/* Still pop and free the arg to keep stack sane */
Value vmsg = pop_value(vm);
free_value(vmsg);
vm_raise_error(vm, "RUST_HELLO_ARGS requires FUN_WITH_RUST=ON at build time");
push_value(vm, make_nil());
#endif
break;
}