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Some more Rusty Fun... :) (0.38.3)

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This commit is contained in:
Johannes Findeisen 2026-01-29 03:29:14 +01:00
commit d39ef1a58e
10 changed files with 157 additions and 113 deletions
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48
src/vm/rust/hello_args_return.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_RETURN
* Pops a string from the stack, asks Rust to return it back (no printing).
* Pushes the returned string, or Nil on error.
*/
case OP_RUST_HELLO_ARGS_RETURN: {
#ifdef FUN_WITH_RUST
Value vmsg = pop_value(vm);
char *msg = value_to_string_alloc(&vmsg);
free_value(vmsg);
if (msg) {
char *ret = fun_rust_echo_string(msg);
free(msg);
if (ret) {
push_value(vm, make_string(ret));
fun_rust_string_free(ret);
} else {
push_value(vm, make_nil());
}
} else {
char *ret = fun_rust_echo_string("");
if (ret) {
push_value(vm, make_string(ret));
fun_rust_string_free(ret);
} else {
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_RETURN requires FUN_WITH_RUST=ON at build time");
push_value(vm, make_nil());
#endif
break;
}