diff options
author | Colin Cross <ccross@android.com> | 2018-10-25 14:37:27 -0700 |
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committer | Colin Cross <ccross@android.com> | 2018-10-25 14:37:34 -0700 |
commit | f4fe6ab6726e235448020c5fd203e4fc1dad728e (patch) | |
tree | 172e736d6c7428f6afd8f706fb3eae2e8ac786b3 /ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java | |
parent | 6e463f53f1f82dfe0a74e25ae729601a9678730c (diff) | |
parent | b0f5cf02f86449e35377c9ff7b9c0f727d3bf63b (diff) | |
download | protobuf-javalite-f4fe6ab6726e235448020c5fd203e4fc1dad728e.tar.gz |
Merge tag 'v3.0.1-javalite'
Test: m checkbuild
Change-Id: If5b58ea9b85a243ef67c30b182d7ce748c8eb734
Diffstat (limited to 'ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java')
-rw-r--r-- | ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java b/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java new file mode 100644 index 00000000..0345cb99 --- /dev/null +++ b/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java @@ -0,0 +1,169 @@ +/* + * 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. + */ + +package com.google.protobuf.jruby; + +import com.google.protobuf.DescriptorProtos; +import com.google.protobuf.Descriptors; +import org.jruby.*; +import org.jruby.anno.JRubyClass; +import org.jruby.anno.JRubyMethod; +import org.jruby.runtime.*; +import org.jruby.runtime.builtin.IRubyObject; + +import java.util.HashMap; +import java.util.Map; + +@JRubyClass(name = "DescriptorPool") +public class RubyDescriptorPool extends RubyObject { + public static void createRubyDescriptorPool(Ruby runtime) { + RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf"); + RubyClass cDescriptorPool = protobuf.defineClassUnder("DescriptorPool", runtime.getObject(), new ObjectAllocator() { + @Override + public IRubyObject allocate(Ruby runtime, RubyClass klazz) { + return new RubyDescriptorPool(runtime, klazz); + } + }); + + cDescriptorPool.defineAnnotatedMethods(RubyDescriptorPool.class); + descriptorPool = (RubyDescriptorPool) cDescriptorPool.newInstance(runtime.getCurrentContext(), Block.NULL_BLOCK); + } + + public RubyDescriptorPool(Ruby ruby, RubyClass klazz) { + super(ruby, klazz); + } + + @JRubyMethod + public IRubyObject initialize(ThreadContext context) { + this.symtab = new HashMap<IRubyObject, IRubyObject>(); + this.cBuilder = (RubyClass) context.runtime.getClassFromPath("Google::Protobuf::Builder"); + this.builder = DescriptorProtos.FileDescriptorProto.newBuilder(); + return this; + } + + @JRubyMethod + public IRubyObject build(ThreadContext context, Block block) { + RubyBuilder ctx = (RubyBuilder) cBuilder.newInstance(context, Block.NULL_BLOCK); + if (block.arity() == Arity.ONE_ARGUMENT) { + block.yield(context, ctx); + } else { + Binding binding = block.getBinding(); + binding.setSelf(ctx); + block.yieldSpecific(context); + } + ctx.finalizeToPool(context, this); + buildFileDescriptor(context); + return context.runtime.getNil(); + } + + @JRubyMethod + public IRubyObject lookup(ThreadContext context, IRubyObject name) { + IRubyObject descriptor = this.symtab.get(name); + if (descriptor == null) { + return context.runtime.getNil(); + } + return descriptor; + } + + /* + * call-seq: + * DescriptorPool.generated_pool => descriptor_pool + * + * Class method that returns the global DescriptorPool. This is a singleton into + * which generated-code message and enum types are registered. The user may also + * register types in this pool for convenience so that they do not have to hold + * a reference to a private pool instance. + */ + @JRubyMethod(meta = true, name = "generated_pool") + public static IRubyObject generatedPool(ThreadContext context, IRubyObject recv) { + return descriptorPool; + } + + protected void addToSymtab(ThreadContext context, RubyDescriptor def) { + symtab.put(def.getName(context), def); + this.builder.addMessageType(def.getBuilder()); + } + + protected void addToSymtab(ThreadContext context, RubyEnumDescriptor def) { + symtab.put(def.getName(context), def); + this.builder.addEnumType(def.getBuilder()); + } + + private void buildFileDescriptor(ThreadContext context) { + Ruby runtime = context.runtime; + try { + this.builder.setSyntax("proto3"); + final Descriptors.FileDescriptor fileDescriptor = Descriptors.FileDescriptor.buildFrom( + this.builder.build(), new Descriptors.FileDescriptor[]{}); + + for (Descriptors.EnumDescriptor enumDescriptor : fileDescriptor.getEnumTypes()) { + String enumName = Utils.unescapeIdentifier(enumDescriptor.getName()); + if (enumDescriptor.findValueByNumber(0) == null) { + throw runtime.newTypeError("Enum definition " + enumName + + " does not contain a value for '0'"); + } + ((RubyEnumDescriptor) symtab.get(runtime.newString(enumName))) + .setDescriptor(enumDescriptor); + } + for (Descriptors.Descriptor descriptor : fileDescriptor.getMessageTypes()) { + RubyDescriptor rubyDescriptor = ((RubyDescriptor) + symtab.get(runtime.newString(Utils.unescapeIdentifier(descriptor.getName())))); + for (Descriptors.FieldDescriptor fieldDescriptor : descriptor.getFields()) { + if (fieldDescriptor.isRequired()) { + throw runtime.newTypeError("Required fields are unsupported in proto3"); + } + RubyFieldDescriptor rubyFieldDescriptor = rubyDescriptor.lookup(fieldDescriptor.getName()); + rubyFieldDescriptor.setFieldDef(fieldDescriptor); + if (fieldDescriptor.getType() == Descriptors.FieldDescriptor.Type.MESSAGE) { + RubyDescriptor subType = (RubyDescriptor) lookup(context, + runtime.newString(Utils.unescapeIdentifier(fieldDescriptor.getMessageType().getName()))); + rubyFieldDescriptor.setSubType(subType); + } + if (fieldDescriptor.getType() == Descriptors.FieldDescriptor.Type.ENUM) { + RubyEnumDescriptor subType = (RubyEnumDescriptor) lookup(context, + runtime.newString(Utils.unescapeIdentifier(fieldDescriptor.getEnumType().getName()))); + rubyFieldDescriptor.setSubType(subType); + } + } + rubyDescriptor.setDescriptor(descriptor); + } + } catch (Descriptors.DescriptorValidationException e) { + throw runtime.newRuntimeError(e.getMessage()); + } + } + + private static RubyDescriptorPool descriptorPool; + + private RubyClass cBuilder; + private Map<IRubyObject, IRubyObject> symtab; + private DescriptorProtos.FileDescriptorProto.Builder builder; +} |