Rename `upbc` to `upb_generator`
This makes the file layout a bit more consistent with the `protos ->
protos_generator` pattern. I also replaced the `upbc` namespace with
`upb::generator`.
PiperOrigin-RevId: 569264372
diff --git a/upb_generator/upbdev.h b/upb_generator/upbdev.h
new file mode 100644
index 0000000..1814b52
--- /dev/null
+++ b/upb_generator/upbdev.h
@@ -0,0 +1,71 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2023 Google LLC. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google LLC nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef UPB_GENERATOR_UPBDEV_H_
+#define UPB_GENERATOR_UPBDEV_H_
+
+#include "upb/base/status.h"
+#include "upb/base/string_view.h"
+#include "upb/mem/arena.h"
+
+// Must be last.
+#include "upb/port/def.inc"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Consume |buf|, deserialize it to a Code_Generator_Request proto, construct a
+// upb_Code_Generator_Request, and return it as a JSON-encoded string.
+UPB_API upb_StringView upbdev_ProcessInput(const char* buf, size_t size,
+ upb_Arena* arena,
+ upb_Status* status);
+
+// Decode |buf| from JSON, serialize to wire format, and return it.
+UPB_API upb_StringView upbdev_ProcessOutput(const char* buf, size_t size,
+ upb_Arena* arena,
+ upb_Status* status);
+
+// Decode |buf| from JSON, serialize to wire format, and write it to stdout.
+UPB_API void upbdev_ProcessStdout(const char* buf, size_t size,
+ upb_Arena* arena, upb_Status* status);
+
+// The following wrappers allow the protoc plugins to call the above functions
+// without pulling in the entire pb_runtime library.
+UPB_API upb_Arena* upbdev_Arena_New(void);
+UPB_API void upbdev_Status_Clear(upb_Status* status);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#include "upb/port/undef.inc"
+
+#endif // UPB_GENERATOR_UPBDEV_H_
