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// Protocol Buffers - Google's data interchange format
// Copyright 2014 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.
#include "protobuf.h"
// -----------------------------------------------------------------------------
// Global map from upb {msg,enum}defs to wrapper Descriptor/EnumDescriptor
// instances.
// -----------------------------------------------------------------------------
// This is a hash table from def objects (encoded by converting pointers to
// Ruby integers) to MessageDef/EnumDef instances (as Ruby values).
VALUE upb_def_to_ruby_obj_map;
VALUE cError;
VALUE cParseError;
VALUE cTypeError;
void add_def_obj(const void* def, VALUE value) {
rb_hash_aset(upb_def_to_ruby_obj_map, ULL2NUM((intptr_t)def), value);
}
VALUE get_def_obj(const void* def) {
return rb_hash_aref(upb_def_to_ruby_obj_map, ULL2NUM((intptr_t)def));
}
// -----------------------------------------------------------------------------
// Utilities.
// -----------------------------------------------------------------------------
// Raises a Ruby error if |status| is not OK, using its error message.
void check_upb_status(const upb_status* status, const char* msg) {
if (!upb_ok(status)) {
rb_raise(rb_eRuntimeError, "%s: %s\n", msg, upb_status_errmsg(status));
}
}
// String encodings: we look these up once, at load time, and then cache them
// here.
rb_encoding* kRubyStringUtf8Encoding;
rb_encoding* kRubyStringASCIIEncoding;
rb_encoding* kRubyString8bitEncoding;
// Ruby-interned string: "descriptor". We use this identifier to store an
// instance variable on message classes we create in order to link them back to
// their descriptors.
//
// We intern this once at module load time then use the interned identifier at
// runtime in order to avoid the cost of repeatedly interning in hot paths.
const char* kDescriptorInstanceVar = "descriptor";
ID descriptor_instancevar_interned;
// -----------------------------------------------------------------------------
// Initialization/entry point.
// -----------------------------------------------------------------------------
// This must be named "Init_protobuf_c" because the Ruby module is named
// "protobuf_c" -- the VM looks for this symbol in our .so.
void Init_protobuf_c() {
VALUE google = rb_define_module("Google");
VALUE protobuf = rb_define_module_under(google, "Protobuf");
VALUE internal = rb_define_module_under(protobuf, "Internal");
descriptor_instancevar_interned = rb_intern(kDescriptorInstanceVar);
DescriptorPool_register(protobuf);
Descriptor_register(protobuf);
FieldDescriptor_register(protobuf);
OneofDescriptor_register(protobuf);
EnumDescriptor_register(protobuf);
MessageBuilderContext_register(internal);
OneofBuilderContext_register(internal);
EnumBuilderContext_register(internal);
Builder_register(internal);
RepeatedField_register(protobuf);
Map_register(protobuf);
cError = rb_const_get(protobuf, rb_intern("Error"));
cParseError = rb_const_get(protobuf, rb_intern("ParseError"));
cTypeError = rb_const_get(protobuf, rb_intern("TypeError"));
rb_define_singleton_method(protobuf, "discard_unknown",
Google_Protobuf_discard_unknown, 1);
rb_define_singleton_method(protobuf, "deep_copy",
Google_Protobuf_deep_copy, 1);
kRubyStringUtf8Encoding = rb_utf8_encoding();
kRubyStringASCIIEncoding = rb_usascii_encoding();
kRubyString8bitEncoding = rb_ascii8bit_encoding();
rb_gc_register_address(&upb_def_to_ruby_obj_map);
upb_def_to_ruby_obj_map = rb_hash_new();
}
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