1ddc30ff8SJoseph Huber //===-- Implementation of ungetc ------------------------------------------===// 2ddc30ff8SJoseph Huber // 3ddc30ff8SJoseph Huber // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4ddc30ff8SJoseph Huber // See https://llvm.org/LICENSE.txt for license information. 5ddc30ff8SJoseph Huber // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6ddc30ff8SJoseph Huber // 7ddc30ff8SJoseph Huber //===----------------------------------------------------------------------===// 8ddc30ff8SJoseph Huber 9ddc30ff8SJoseph Huber #include "src/stdio/ungetc.h" 10ddc30ff8SJoseph Huber #include "file.h" 115ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 12ddc30ff8SJoseph Huber 135aed6d67SMichael Jones #include "hdr/types/FILE.h" 14ddc30ff8SJoseph Huber 155ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 16ddc30ff8SJoseph Huber 17ddc30ff8SJoseph Huber LLVM_LIBC_FUNCTION(int, ungetc, (int c, ::FILE *stream)) { 18ddc30ff8SJoseph Huber int ret; 19*a6ef0debSJoseph Huber rpc::Client::Port port = rpc::client.open<LIBC_UNGETC>(); 20ddc30ff8SJoseph Huber port.send_and_recv( 21be0c67c9SJoseph Huber [=](rpc::Buffer *buffer, uint32_t) { 22ddc30ff8SJoseph Huber buffer->data[0] = c; 23ddc30ff8SJoseph Huber buffer->data[1] = file::from_stream(stream); 24ddc30ff8SJoseph Huber }, 25be0c67c9SJoseph Huber [&](rpc::Buffer *buffer, uint32_t) { 26be0c67c9SJoseph Huber ret = static_cast<int>(buffer->data[0]); 27be0c67c9SJoseph Huber }); 28ddc30ff8SJoseph Huber port.close(); 29ddc30ff8SJoseph Huber return ret; 30ddc30ff8SJoseph Huber } 31ddc30ff8SJoseph Huber 325ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 33