d0535cc09e
This change only adds basic proto2 support without advanced features
like extensions, custom options, maps, etc.
The protoc binary now generates ruby code for proto2 syntax.
However, for now, it is restricted to proto2 files without advanced features
like extensions, in which case it still errors out.
This change also modifies the DSL to add proto messages to the DescriptorPool.
There is a new DSL Builder#add_file to create a new FileDescriptor. With this,
the generated ruby DSL looks something like:
Google::Protobuf::DescriptorPool.generated_pool.build do
add_file "test.proto" do
add_message "foo" do
optional :val, :int32, 1
end
end
end
122 lines
5.1 KiB
C
122 lines
5.1 KiB
C
// Protocol Buffers - Google's data interchange format
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// Copyright 2014 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "protobuf.h"
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// -----------------------------------------------------------------------------
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// Global map from upb {msg,enum}defs to wrapper Descriptor/EnumDescriptor
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// instances.
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// -----------------------------------------------------------------------------
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// This is a hash table from def objects (encoded by converting pointers to
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// Ruby integers) to MessageDef/EnumDef instances (as Ruby values).
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VALUE upb_def_to_ruby_obj_map;
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VALUE cError;
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VALUE cParseError;
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VALUE cTypeError;
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void add_def_obj(const void* def, VALUE value) {
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rb_hash_aset(upb_def_to_ruby_obj_map, ULL2NUM((intptr_t)def), value);
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}
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VALUE get_def_obj(const void* def) {
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return rb_hash_aref(upb_def_to_ruby_obj_map, ULL2NUM((intptr_t)def));
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}
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// -----------------------------------------------------------------------------
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// Utilities.
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// -----------------------------------------------------------------------------
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// Raises a Ruby error if |status| is not OK, using its error message.
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void check_upb_status(const upb_status* status, const char* msg) {
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if (!upb_ok(status)) {
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rb_raise(rb_eRuntimeError, "%s: %s\n", msg, upb_status_errmsg(status));
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}
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}
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// String encodings: we look these up once, at load time, and then cache them
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// here.
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rb_encoding* kRubyStringUtf8Encoding;
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rb_encoding* kRubyStringASCIIEncoding;
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rb_encoding* kRubyString8bitEncoding;
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// Ruby-interned string: "descriptor". We use this identifier to store an
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// instance variable on message classes we create in order to link them back to
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// their descriptors.
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//
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// We intern this once at module load time then use the interned identifier at
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// runtime in order to avoid the cost of repeatedly interning in hot paths.
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const char* kDescriptorInstanceVar = "descriptor";
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ID descriptor_instancevar_interned;
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// -----------------------------------------------------------------------------
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// Initialization/entry point.
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// -----------------------------------------------------------------------------
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// This must be named "Init_protobuf_c" because the Ruby module is named
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// "protobuf_c" -- the VM looks for this symbol in our .so.
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void Init_protobuf_c() {
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VALUE google = rb_define_module("Google");
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VALUE protobuf = rb_define_module_under(google, "Protobuf");
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VALUE internal = rb_define_module_under(protobuf, "Internal");
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descriptor_instancevar_interned = rb_intern(kDescriptorInstanceVar);
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DescriptorPool_register(protobuf);
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Descriptor_register(protobuf);
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FileDescriptor_register(protobuf);
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FieldDescriptor_register(protobuf);
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OneofDescriptor_register(protobuf);
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EnumDescriptor_register(protobuf);
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MessageBuilderContext_register(internal);
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OneofBuilderContext_register(internal);
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EnumBuilderContext_register(internal);
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FileBuilderContext_register(internal);
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Builder_register(internal);
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RepeatedField_register(protobuf);
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Map_register(protobuf);
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cError = rb_const_get(protobuf, rb_intern("Error"));
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cParseError = rb_const_get(protobuf, rb_intern("ParseError"));
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cTypeError = rb_const_get(protobuf, rb_intern("TypeError"));
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rb_define_singleton_method(protobuf, "discard_unknown",
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Google_Protobuf_discard_unknown, 1);
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rb_define_singleton_method(protobuf, "deep_copy",
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Google_Protobuf_deep_copy, 1);
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kRubyStringUtf8Encoding = rb_utf8_encoding();
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kRubyStringASCIIEncoding = rb_usascii_encoding();
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kRubyString8bitEncoding = rb_ascii8bit_encoding();
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rb_gc_register_address(&upb_def_to_ruby_obj_map);
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upb_def_to_ruby_obj_map = rb_hash_new();
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}
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