Add new file option php_namespace. (#3162)

* Add new file option php_namespace.

Use this option to change the namespace of php generated classes.
Default is empty. When this option is empty, the package name will be
used for determining the namespace.

* Uncomment commented tests

* Revert gdb test change

* Update csharp descriptor.

* Add test for empty php_namespace.

1 files changed, 88 insertions, 55 deletions

diff --git a/csharp/src/Google.Protobuf/Reflection/Descriptor.cs b/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
index 2960d1cd..c3517802 100644
--- a/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
+++ b/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
@@ -80,7 +80,7 @@ namespace Google.Protobuf.Reflection {
             "ASgJEhMKC291dHB1dF90eXBlGAMgASgJEi8KB29wdGlvbnMYBCABKAsyHi5n",
             "b29nbGUucHJvdG9idWYuTWV0aG9kT3B0aW9ucxIfChBjbGllbnRfc3RyZWFt",
             "aW5nGAUgASgIOgVmYWxzZRIfChBzZXJ2ZXJfc3RyZWFtaW5nGAYgASgIOgVm",
-            "YWxzZSK0BQoLRmlsZU9wdGlvbnMSFAoMamF2YV9wYWNrYWdlGAEgASgJEhwK",
+            "YWxzZSLLBQoLRmlsZU9wdGlvbnMSFAoMamF2YV9wYWNrYWdlGAEgASgJEhwK",
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             "ZmlsZXMYCiABKAg6BWZhbHNlEikKHWphdmFfZ2VuZXJhdGVfZXF1YWxzX2Fu",
             "ZF9oYXNoGBQgASgIQgIYARIlChZqYXZhX3N0cmluZ19jaGVja191dGY4GBsg",
@@ -92,61 +92,61 @@ namespace Google.Protobuf.Reflection {
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-            "LlJlZmxlY3Rpb24="));
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+            "AgNHUEKqAhpHb29nbGUuUHJvdG9idWYuUmVmbGVjdGlvbg=="));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
           new pbr::FileDescriptor[] { },
           new pbr::GeneratedClrTypeInfo(null, new pbr::GeneratedClrTypeInfo[] {
@@ -160,7 +160,7 @@ namespace Google.Protobuf.Reflection {
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.EnumValueDescriptorProto), global::Google.Protobuf.Reflection.EnumValueDescriptorProto.Parser, new[]{ "Name", "Number", "Options" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.ServiceDescriptorProto), global::Google.Protobuf.Reflection.ServiceDescriptorProto.Parser, new[]{ "Name", "Method", "Options" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.MethodDescriptorProto), global::Google.Protobuf.Reflection.MethodDescriptorProto.Parser, new[]{ "Name", "InputType", "OutputType", "Options", "ClientStreaming", "ServerStreaming" }, null, null, null),
-            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FileOptions), global::Google.Protobuf.Reflection.FileOptions.Parser, new[]{ "JavaPackage", "JavaOuterClassname", "JavaMultipleFiles", "JavaGenerateEqualsAndHash", "JavaStringCheckUtf8", "OptimizeFor", "GoPackage", "CcGenericServices", "JavaGenericServices", "PyGenericServices", "Deprecated", "CcEnableArenas", "ObjcClassPrefix", "CsharpNamespace", "SwiftPrefix", "PhpClassPrefix", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode) }, null),
+            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FileOptions), global::Google.Protobuf.Reflection.FileOptions.Parser, new[]{ "JavaPackage", "JavaOuterClassname", "JavaMultipleFiles", "JavaGenerateEqualsAndHash", "JavaStringCheckUtf8", "OptimizeFor", "GoPackage", "CcGenericServices", "JavaGenericServices", "PyGenericServices", "Deprecated", "CcEnableArenas", "ObjcClassPrefix", "CsharpNamespace", "SwiftPrefix", "PhpClassPrefix", "PhpNamespace", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode) }, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.MessageOptions), global::Google.Protobuf.Reflection.MessageOptions.Parser, new[]{ "MessageSetWireFormat", "NoStandardDescriptorAccessor", "Deprecated", "MapEntry", "UninterpretedOption" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FieldOptions), global::Google.Protobuf.Reflection.FieldOptions.Parser, new[]{ "Ctype", "Packed", "Jstype", "Lazy", "Deprecated", "Weak", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FieldOptions.Types.CType), typeof(global::Google.Protobuf.Reflection.FieldOptions.Types.JSType) }, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.OneofOptions), global::Google.Protobuf.Reflection.OneofOptions.Parser, new[]{ "UninterpretedOption" }, null, null, null),
@@ -2810,6 +2810,7 @@ namespace Google.Protobuf.Reflection {
       csharpNamespace_ = other.csharpNamespace_;
       swiftPrefix_ = other.swiftPrefix_;
       phpClassPrefix_ = other.phpClassPrefix_;
+      phpNamespace_ = other.phpNamespace_;
       uninterpretedOption_ = other.uninterpretedOption_.Clone();
     }
 
@@ -3073,6 +3074,22 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "php_namespace" field.</summary>
+    public const int PhpNamespaceFieldNumber = 41;
+    private string phpNamespace_ = "";
+    /// <summary>
+    /// Use this option to change the namespace of php generated classes. Default
+    /// is empty. When this option is empty, the package name will be used for
+    /// determining the namespace.
+    /// </summary>
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public string PhpNamespace {
+      get { return phpNamespace_; }
+      set {
+        phpNamespace_ = pb::ProtoPreconditions.CheckNotNull(value, "value");
+      }
+    }
+
     /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
@@ -3115,6 +3132,7 @@ namespace Google.Protobuf.Reflection {
       if (CsharpNamespace != other.CsharpNamespace) return false;
       if (SwiftPrefix != other.SwiftPrefix) return false;
       if (PhpClassPrefix != other.PhpClassPrefix) return false;
+      if (PhpNamespace != other.PhpNamespace) return false;
       if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
       return true;
     }
@@ -3138,6 +3156,7 @@ namespace Google.Protobuf.Reflection {
       if (CsharpNamespace.Length != 0) hash ^= CsharpNamespace.GetHashCode();
       if (SwiftPrefix.Length != 0) hash ^= SwiftPrefix.GetHashCode();
       if (PhpClassPrefix.Length != 0) hash ^= PhpClassPrefix.GetHashCode();
+      if (PhpNamespace.Length != 0) hash ^= PhpNamespace.GetHashCode();
       hash ^= uninterpretedOption_.GetHashCode();
       return hash;
     }
@@ -3213,6 +3232,10 @@ namespace Google.Protobuf.Reflection {
         output.WriteRawTag(194, 2);
         output.WriteString(PhpClassPrefix);
       }
+      if (PhpNamespace.Length != 0) {
+        output.WriteRawTag(202, 2);
+        output.WriteString(PhpNamespace);
+      }
       uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
     }
 
@@ -3267,6 +3290,9 @@ namespace Google.Protobuf.Reflection {
       if (PhpClassPrefix.Length != 0) {
         size += 2 + pb::CodedOutputStream.ComputeStringSize(PhpClassPrefix);
       }
+      if (PhpNamespace.Length != 0) {
+        size += 2 + pb::CodedOutputStream.ComputeStringSize(PhpNamespace);
+      }
       size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
       return size;
     }
@@ -3324,6 +3350,9 @@ namespace Google.Protobuf.Reflection {
       if (other.PhpClassPrefix.Length != 0) {
         PhpClassPrefix = other.PhpClassPrefix;
       }
+      if (other.PhpNamespace.Length != 0) {
+        PhpNamespace = other.PhpNamespace;
+      }
       uninterpretedOption_.Add(other.uninterpretedOption_);
     }
 
@@ -3399,6 +3428,10 @@ namespace Google.Protobuf.Reflection {
             PhpClassPrefix = input.ReadString();
             break;
           }
+          case 330: {
+            PhpNamespace = input.ReadString();
+            break;
+          }
           case 7994: {
             uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
             break;