Merge commit '36bca61764984ff5395653cf8377ec5daa71b709' as 'libs/protobuf'

libs/protobuf/ruby/ext/google/protobuf_c/convert.h

@@ -0,0 +1,75 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  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 Inc. 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 RUBY_PROTOBUF_CONVERT_H_
+#define RUBY_PROTOBUF_CONVERT_H_
+
+#include <ruby/ruby.h>
+
+#include "protobuf.h"
+#include "ruby-upb.h"
+
+// Converts |ruby_val| to a upb_MessageValue according to |type_info|.
+//
+// The |arena| parameter indicates the lifetime of the container where this
+// value will be assigned. It is used as follows:
+// - If type is string or bytes, the string data will be copied into |arena|.
+// - If type is message, and we need to auto-construct a message due to implicit
+//   conversions (eg. Time -> Google::Protobuf::Timestamp), the new message
+//   will be created in |arena|.
+// - If type is message and the Ruby value is a message instance, we will fuse
+//   the message's arena into |arena|, to ensure that this message outlives the
+//   container.
+upb_MessageValue Convert_RubyToUpb(VALUE ruby_val, const char *name,
+                                   TypeInfo type_info, upb_Arena *arena);
+
+// Converts |upb_val| to a Ruby VALUE according to |type_info|. This may involve
+// creating a Ruby wrapper object.
+//
+// The |arena| parameter indicates the arena that owns the lifetime of
+// |upb_val|. Any Ruby wrapper object that is created will reference |arena|
+// and ensure it outlives the wrapper.
+VALUE Convert_UpbToRuby(upb_MessageValue upb_val, TypeInfo type_info,
+                        VALUE arena);
+
+// Creates a deep copy of |msgval| in |arena|.
+upb_MessageValue Msgval_DeepCopy(upb_MessageValue msgval, TypeInfo type_info,
+                                 upb_Arena *arena);
+
+// Returns true if |val1| and |val2| are equal. Their type is given by
+// |type_info|.
+bool Msgval_IsEqual(upb_MessageValue val1, upb_MessageValue val2,
+                    TypeInfo type_info);
+
+// Returns a hash value for the given upb_MessageValue.
+uint64_t Msgval_GetHash(upb_MessageValue val, TypeInfo type_info,
+                        uint64_t seed);
+
+#endif  // RUBY_PROTOBUF_CONVERT_H_