socket_tcp_accept.c

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/*
 * This file is part of the Fun programming language.
 * https://fun-lang.xyz/
 *
 * Copyright 2025 Johannes Findeisen <you@hanez.org>
 * Licensed under the terms of the Apache-2.0 license.
 * https://opensource.org/license/apache-2-0
 */


case OP_SOCK_TCP_ACCEPT: {
 /* Pops listen fd; pushes client fd (>0) or 0 */
 Value fdv = pop_value(vm);
 int client = 0;
#ifdef __unix__
 if (fdv.type != VAL_INT) {
 fprintf(stderr, "Runtime type error: tcp_accept expects (int listen_fd)\n");
 free_value(fdv);
 push_value(vm, make_int(0));
 break;
 }
 int s = (int)fdv.i;
 int c = accept(s, NULL, NULL);
 if (c >= 0) client = c;
#endif
 free_value(fdv);
 push_value(vm, make_int(client > 0 ? client : 0));
 break;
}