C++ Code generator

PiperOrigin-RevId: 486158566

protos_generator/gen_utils.h

diff --git a/protos_generator/gen_utils.h b/protos_generator/gen_utils.h
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+++ b/protos_generator/gen_utils.h
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+/*
+ * Copyright (c) 2009-2021, Google LLC
+ * All rights reserved.
+ *
+ * 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 Google LLC 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_PROTOS_GENERATOR_GEN_UTILS_H_
+#define UPB_PROTOS_GENERATOR_GEN_UTILS_H_
+
+#include "google/protobuf/compiler/code_generator.h"
+#include "google/protobuf/compiler/plugin.h"
+#include "google/protobuf/descriptor.pb.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/wire_format.h"
+#include "absl/container/flat_hash_map.h"
+#include "protos_generator/output.h"
+
+namespace protos_generator {
+
+namespace protobuf = ::google::protobuf;
+
+enum class MessageClassType {
+  kMessage,
+  kMessageCProxy,
+  kMessageProxy,
+  kMessageAccess,
+};
+
+std::string ClassName(const protobuf::Descriptor* descriptor);
+std::string QualifiedClassName(const protobuf::Descriptor* descriptor);
+std::string QualifiedInternalClassName(const protobuf::Descriptor* descriptor);
+
+inline bool IsMapEntryMessage(const protobuf::Descriptor* descriptor) {
+  return descriptor->options().map_entry();
+}
+std::string CppSourceFilename(const google::protobuf::FileDescriptor* file);
+std::string ForwardingHeaderFilename(const google::protobuf::FileDescriptor* file);
+std::string UpbCFilename(const google::protobuf::FileDescriptor* file);
+std::string CppHeaderFilename(const google::protobuf::FileDescriptor* file);
+
+void WriteStartNamespace(const protobuf::FileDescriptor* file, Output& output);
+void WriteEndNamespace(const protobuf::FileDescriptor* file, Output& output);
+
+std::string CppConstType(const protobuf::FieldDescriptor* field);
+std::string CppTypeParameterName(const protobuf::FieldDescriptor* field);
+
+std::string MessageBaseType(const protobuf::FieldDescriptor* field,
+                            bool is_const);
+// Generate protos::Ptr<const Model> to be used in accessors as public
+// signatures.
+std::string MessagePtrConstType(const protobuf::FieldDescriptor* field,
+                                bool is_const);
+std::string MessageCProxyType(const protobuf::FieldDescriptor* field,
+                              bool is_const);
+std::string MessageProxyType(const protobuf::FieldDescriptor* field,
+                             bool is_const);
+
+}  // namespace protos_generator
+
+#endif  // UPB_PROTOS_GENERATOR_GEN_UTILS_H_