diff options
Diffstat (limited to 'third_party/protobuf/3.4.0/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java')
-rw-r--r-- | third_party/protobuf/3.4.0/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java b/third_party/protobuf/3.4.0/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java new file mode 100644 index 0000000000..4df832d0cf --- /dev/null +++ b/third_party/protobuf/3.4.0/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java @@ -0,0 +1,185 @@ +/* + * 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.Ruby; +import org.jruby.RubyClass; +import org.jruby.RubyModule; +import org.jruby.RubyObject; +import org.jruby.RubyNumeric; +import org.jruby.anno.JRubyClass; +import org.jruby.anno.JRubyMethod; +import org.jruby.runtime.Block; +import org.jruby.runtime.ObjectAllocator; +import org.jruby.runtime.ThreadContext; +import org.jruby.runtime.builtin.IRubyObject; + +@JRubyClass(name = "EnumDescriptor", include = "Enumerable") +public class RubyEnumDescriptor extends RubyObject { + public static void createRubyEnumDescriptor(Ruby runtime) { + RubyModule mProtobuf = runtime.getClassFromPath("Google::Protobuf"); + RubyClass cEnumDescriptor = mProtobuf.defineClassUnder("EnumDescriptor", runtime.getObject(), new ObjectAllocator() { + @Override + public IRubyObject allocate(Ruby runtime, RubyClass klazz) { + return new RubyEnumDescriptor(runtime, klazz); + } + }); + cEnumDescriptor.includeModule(runtime.getEnumerable()); + cEnumDescriptor.defineAnnotatedMethods(RubyEnumDescriptor.class); + } + + public RubyEnumDescriptor(Ruby runtime, RubyClass klazz) { + super(runtime, klazz); + } + + /* + * call-seq: + * EnumDescriptor.new => enum_descriptor + * + * Creates a new, empty, enum descriptor. Must be added to a pool before the + * enum type can be used. The enum type may only be modified prior to adding to + * a pool. + */ + @JRubyMethod + public IRubyObject initialize(ThreadContext context) { + this.builder = DescriptorProtos.EnumDescriptorProto.newBuilder(); + return this; + } + + /* + * call-seq: + * EnumDescriptor.name => name + * + * Returns the name of this enum type. + */ + @JRubyMethod(name = "name") + public IRubyObject getName(ThreadContext context) { + return this.name; + } + + /* + * call-seq: + * EnumDescriptor.name = name + * + * Sets the name of this enum type. Cannot be called if the enum type has + * already been added to a pool. + */ + @JRubyMethod(name = "name=") + public IRubyObject setName(ThreadContext context, IRubyObject name) { + this.name = name; + this.builder.setName(Utils.escapeIdentifier(name.asJavaString())); + return context.runtime.getNil(); + } + + /* + * call-seq: + * EnumDescriptor.add_value(key, value) + * + * Adds a new key => value mapping to this enum type. Key must be given as a + * Ruby symbol. Cannot be called if the enum type has already been added to a + * pool. Will raise an exception if the key or value is already in use. + */ + @JRubyMethod(name = "add_value") + public IRubyObject addValue(ThreadContext context, IRubyObject name, IRubyObject number) { + DescriptorProtos.EnumValueDescriptorProto.Builder valueBuilder = DescriptorProtos.EnumValueDescriptorProto.newBuilder(); + valueBuilder.setName(name.asJavaString()); + valueBuilder.setNumber(RubyNumeric.num2int(number)); + this.builder.addValue(valueBuilder); + return context.runtime.getNil(); + } + + /* + * call-seq: + * EnumDescriptor.each(&block) + * + * Iterates over key => value mappings in this enum's definition, yielding to + * the block with (key, value) arguments for each one. + */ + @JRubyMethod + public IRubyObject each(ThreadContext context, Block block) { + Ruby runtime = context.runtime; + for (Descriptors.EnumValueDescriptor enumValueDescriptor : descriptor.getValues()) { + block.yield(context, runtime.newArray(runtime.newSymbol(enumValueDescriptor.getName()), + runtime.newFixnum(enumValueDescriptor.getNumber()))); + } + return runtime.getNil(); + } + + /* + * call-seq: + * EnumDescriptor.enummodule => module + * + * Returns the Ruby module corresponding to this enum type. Cannot be called + * until the enum descriptor has been added to a pool. + */ + @JRubyMethod + public IRubyObject enummodule(ThreadContext context) { + if (this.klazz == null) { + this.klazz = buildModuleFromDescriptor(context); + } + return this.klazz; + } + + public void setDescriptor(Descriptors.EnumDescriptor descriptor) { + this.descriptor = descriptor; + } + + public Descriptors.EnumDescriptor getDescriptor() { + return this.descriptor; + } + + public DescriptorProtos.EnumDescriptorProto.Builder getBuilder() { + return this.builder; + } + + private RubyModule buildModuleFromDescriptor(ThreadContext context) { + Ruby runtime = context.runtime; + Utils.checkNameAvailability(context, name.asJavaString()); + + RubyModule enumModule = RubyModule.newModule(runtime); + for (Descriptors.EnumValueDescriptor value : descriptor.getValues()) { + enumModule.defineConstant(value.getName(), runtime.newFixnum(value.getNumber())); + } + + enumModule.instance_variable_set(runtime.newString(Utils.DESCRIPTOR_INSTANCE_VAR), this); + enumModule.defineAnnotatedMethods(RubyEnum.class); + return enumModule; + } + + private IRubyObject name; + private RubyModule klazz; + private Descriptors.EnumDescriptor descriptor; + private DescriptorProtos.EnumDescriptorProto.Builder builder; +} |