Don't serialize default primary constructors

Drop "Callable primary_constructor" field, because it requires serializer to
serialize the fact that a class has a primary constructor. Default primary
constructors for objects etc. may not be serialized, because they can be
re-created trivially when they're loaded. There are three options: a class
doesn't have a primary constructor, a class has a default primary constructor,
a class has a custom primary constructor. This explains the change in
descriptors.proto

compiler/frontend/builtins/jet/Any.kotlin_class

@@ -1,2 +1,3 @@
-Rﾆ
0B
+j
+ﾆ
0B
 

compiler/frontend/builtins/jet/BooleanIterator.kotlin_class

@@ -1,8 +1,9 @@
 &2
 
-	RĆ
0B
-Z
+	Z
 0B
 	Z
 &0B
-	
+	j
+Ć
0B
+

compiler/frontend/builtins/jet/ByteIterator.kotlin_class

@@ -1,8 +1,9 @@
 &2
 
-RĆ
0B
-Z
+Z
 0B
 Z
 &0?B
-
+j
+Ć
0B
+

compiler/frontend/builtins/jet/CharIterator.kotlin_class

@@ -1,8 +1,9 @@
 &!2
 
-RĆ
0B
-!Z
+Z
 0B
 Z
 &0LB
-
+j
+Ć
0B
+!

compiler/frontend/builtins/jet/DoubleIterator.kotlin_class

@@ -1,8 +1,9 @@
 &*2
 
-RĆ
0B
-*Z
+Z
 0B
 Z
 &0]B
-
+j
+Ć
0B
+*

compiler/frontend/builtins/jet/FloatIterator.kotlin_class

@@ -1,7 +1,8 @@
 &F2
 
-RĆ
0B
-FZ
+Z
 0B
 Z&0Ş
B
-
+j
+Ć
0B
+F

compiler/frontend/builtins/jet/InlineStrategy.kotlin_class

@@ -1,4 +1,5 @@
 †
_2
 -
-_H
RÂ
0B
-_`Ä
`Å

+_H
`Ä
`Å
j
+Â
0B
+_

compiler/frontend/builtins/jet/IntIterator.kotlin_class

@@ -1,7 +1,8 @@
 &d2
 
-RĆ
0B
-dZ
+Z
 0B
 Z&0Đ
B
-
+j
+Ć
0B
+d

compiler/frontend/builtins/jet/LongIterator.kotlin_class

@@ -1,7 +1,8 @@
 &Ż
2
 
-RĆ
0B
-Ż
Z
+Z
 0B
 Z&0§B
-
+j
+Ć
0B
+Ż

compiler/frontend/builtins/jet/Nothing.kotlin_class

@@ -1,2 +1,3 @@
-Ѕ
RВ
0B
+Ѕ
j
+В
0B
 Ѕ

compiler/frontend/builtins/jet/Number.kotlin_class

@@ -1,6 +1,5 @@
 &
-2
-(RĆ
0B
+2
 (Z
 &06B
 Z
@@ -14,4 +13,6 @@
 Z
 &0;B
 Z
-Z
+&0<B
+j
+Ć
0B

compiler/frontend/builtins/jet/ShortIterator.kotlin_class

@@ -1,7 +1,8 @@
 &Á
2
 
-RĆ
0B
-Á
Z
+Z
 0B
 Z&0ĐB
-
+j
+Ć
0B
+Á

compiler/frontend/builtins/jet/Throwable.kotlin_class

@@ -1,8 +1,9 @@
 Ä
2
-R+Ć
0:
-Ő
-%
:Ö
-Ä

B
+Z0×B
 Ä

Z
 0ŘB
-0ŘB
+%
Z0ŮB
+j-
++Ć
0:
+Ő
+%
:Ö

compiler/frontend/builtins/jet/Unit.kotlin_class

@@ -1,3 +1,4 @@
 2
-H
RВ
0B
+H
j
+В
0B
 

compiler/frontend/builtins/jet/atomic.kotlin_class

@@ -1,3 +1,4 @@
 ��
2
-
R�
0B
+
j
+�
0B
 �

compiler/frontend/builtins/jet/data.kotlin_class

@@ -1,3 +1,4 @@
 †Η
2
-
RΖ
0B
+
j
+Ζ
0B
 Η

compiler/frontend/builtins/jet/inline.kotlin_class

@@ -1,5 +1,6 @@
 †É
2
-
RÆ
0:à
+
ZÆ 0àB
+_j
+Æ
0:à
 _B
-É
ZÆ 0àB
-_
+É

compiler/frontend/builtins/jet/noinline.kotlin_class

@@ -1,3 +1,4 @@
 ��
2
-
R�
0B
+
j
+�
0B
 �

compiler/frontend/builtins/jet/volatile.kotlin_class

@@ -1,3 +1,4 @@
 ��
2
-
R�
0B
+
j
+�
0B
 �

compiler/frontend/serialization/src/descriptors.proto

@@ -120,12 +120,19 @@ message Class {
 
   optional bool class_object_present = 9 [default = false];
 
-  optional Callable primary_constructor = 10;
-  // todo: other constructors?
-
   repeated Callable member = 11;
 
   repeated int32 enum_entry = 12;
+
+  message PrimaryConstructor {
+    // If this field is present, it contains serialized data for the primary constructor.
+    // Otherwise it's default and can be created manually upon deserialization
+    optional Callable data = 1;
+  }
+
+  // This field is present if and only if the class has a primary constructor
+  optional PrimaryConstructor primary_constructor = 13;
+  // todo: other constructors?
 }
 
 message Package {

compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/DescriptorSerializer.java

@@ -19,6 +19,7 @@ package org.jetbrains.jet.descriptors.serialization;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.descriptors.*;
 import org.jetbrains.jet.lang.descriptors.annotations.Annotated;
+import org.jetbrains.jet.lang.resolve.DescriptorFactory;
 import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.TypeConstructor;
 import org.jetbrains.jet.lang.types.TypeProjection;
@@ -101,8 +102,16 @@ public class DescriptorSerializer {
 
         ConstructorDescriptor primaryConstructor = classDescriptor.getUnsubstitutedPrimaryConstructor();
         if (primaryConstructor != null) {
-            builder.setPrimaryConstructor(local.callableProto(primaryConstructor));
+            if (DescriptorFactory.isDefaultPrimaryConstructor(primaryConstructor)) {
+                builder.setPrimaryConstructor(ProtoBuf.Class.PrimaryConstructor.getDefaultInstance());
+            }
+            else {
+                ProtoBuf.Class.PrimaryConstructor.Builder constructorBuilder = ProtoBuf.Class.PrimaryConstructor.newBuilder();
+                constructorBuilder.setData(local.callableProto(primaryConstructor));
+                builder.setPrimaryConstructor(constructorBuilder);
+            }
         }
+
         // TODO: other constructors
 
         for (DeclarationDescriptor descriptor : sort(classDescriptor.getDefaultType().getMemberScope().getAllDescriptors())) {

compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/ProtoBuf.java

@@ -4437,24 +4437,6 @@ public final class ProtoBuf {
      */
     boolean getClassObjectPresent();
 
-    // optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;
-    /**
-     * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-     *
-     * <pre>
-     * todo: other constructors?
-     * </pre>
-     */
-    boolean hasPrimaryConstructor();
-    /**
-     * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-     *
-     * <pre>
-     * todo: other constructors?
-     * </pre>
-     */
-    org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getPrimaryConstructor();
-
     // repeated .org.jetbrains.jet.descriptors.serialization.Callable member = 11;
     /**
      * <code>repeated .org.jetbrains.jet.descriptors.serialization.Callable member = 11;</code>
@@ -4483,6 +4465,24 @@ public final class ProtoBuf {
      * <code>repeated int32 enum_entry = 12;</code>
      */
     int getEnumEntry(int index);
+
+    // optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;
+    /**
+     * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+     *
+     * <pre>
+     * This field is present if and only if the class has a primary constructor
+     * </pre>
+     */
+    boolean hasPrimaryConstructor();
+    /**
+     * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+     *
+     * <pre>
+     * This field is present if and only if the class has a primary constructor
+     * </pre>
+     */
+    org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor getPrimaryConstructor();
   }
   /**
    * Protobuf type {@code org.jetbrains.jet.descriptors.serialization.Class}
@@ -4605,31 +4605,18 @@ public final class ProtoBuf {
               classObjectPresent_ = input.readBool();
               break;
             }
-            case 82: {
-              org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.Builder subBuilder = null;
-              if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                subBuilder = primaryConstructor_.toBuilder();
-              }
-              primaryConstructor_ = input.readMessage(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.PARSER, extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(primaryConstructor_);
-                primaryConstructor_ = subBuilder.buildPartial();
-              }
-              bitField0_ |= 0x00000010;
-              break;
-            }
             case 90: {
-              if (!((mutable_bitField0_ & 0x00000200) == 0x00000200)) {
+              if (!((mutable_bitField0_ & 0x00000100) == 0x00000100)) {
                 member_ = new java.util.ArrayList<org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable>();
-                mutable_bitField0_ |= 0x00000200;
+                mutable_bitField0_ |= 0x00000100;
               }
               member_.add(input.readMessage(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.PARSER, extensionRegistry));
               break;
             }
             case 96: {
-              if (!((mutable_bitField0_ & 0x00000400) == 0x00000400)) {
+              if (!((mutable_bitField0_ & 0x00000200) == 0x00000200)) {
                 enumEntry_ = new java.util.ArrayList<java.lang.Integer>();
-                mutable_bitField0_ |= 0x00000400;
+                mutable_bitField0_ |= 0x00000200;
               }
               enumEntry_.add(input.readInt32());
               break;
@@ -4637,9 +4624,9 @@ public final class ProtoBuf {
             case 98: {
               int length = input.readRawVarint32();
               int limit = input.pushLimit(length);
-              if (!((mutable_bitField0_ & 0x00000400) == 0x00000400) && input.getBytesUntilLimit() > 0) {
+              if (!((mutable_bitField0_ & 0x00000200) == 0x00000200) && input.getBytesUntilLimit() > 0) {
                 enumEntry_ = new java.util.ArrayList<java.lang.Integer>();
-                mutable_bitField0_ |= 0x00000400;
+                mutable_bitField0_ |= 0x00000200;
               }
               while (input.getBytesUntilLimit() > 0) {
                 enumEntry_.add(input.readInt32());
@@ -4647,6 +4634,19 @@ public final class ProtoBuf {
               input.popLimit(limit);
               break;
             }
+            case 106: {
+              org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000010) == 0x00000010)) {
+                subBuilder = primaryConstructor_.toBuilder();
+              }
+              primaryConstructor_ = input.readMessage(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(primaryConstructor_);
+                primaryConstructor_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000010;
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
@@ -4667,10 +4667,10 @@ public final class ProtoBuf {
         if (((mutable_bitField0_ & 0x00000040) == 0x00000040)) {
           nestedObjectName_ = java.util.Collections.unmodifiableList(nestedObjectName_);
         }
-        if (((mutable_bitField0_ & 0x00000200) == 0x00000200)) {
+        if (((mutable_bitField0_ & 0x00000100) == 0x00000100)) {
           member_ = java.util.Collections.unmodifiableList(member_);
         }
-        if (((mutable_bitField0_ & 0x00000400) == 0x00000400)) {
+        if (((mutable_bitField0_ & 0x00000200) == 0x00000200)) {
           enumEntry_ = java.util.Collections.unmodifiableList(enumEntry_);
         }
         makeExtensionsImmutable();
@@ -4800,6 +4800,437 @@ public final class ProtoBuf {
       // @@protoc_insertion_point(enum_scope:org.jetbrains.jet.descriptors.serialization.Class.Kind)
     }
 
+    public interface PrimaryConstructorOrBuilder
+        extends com.google.protobuf.MessageLiteOrBuilder {
+
+      // optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+       *
+       * <pre>
+       * If this field is present, it contains serialized data for the primary constructor.
+       * Otherwise it's default and can be created manually upon deserialization
+       * </pre>
+       */
+      boolean hasData();
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+       *
+       * <pre>
+       * If this field is present, it contains serialized data for the primary constructor.
+       * Otherwise it's default and can be created manually upon deserialization
+       * </pre>
+       */
+      org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getData();
+    }
+    /**
+     * Protobuf type {@code org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor}
+     */
+    public static final class PrimaryConstructor extends
+        com.google.protobuf.GeneratedMessageLite
+        implements PrimaryConstructorOrBuilder {
+      // Use PrimaryConstructor.newBuilder() to construct.
+      private PrimaryConstructor(com.google.protobuf.GeneratedMessageLite.Builder builder) {
+        super(builder);
+
+      }
+      private PrimaryConstructor(boolean noInit) {}
+
+      private static final PrimaryConstructor defaultInstance;
+      public static PrimaryConstructor getDefaultInstance() {
+        return defaultInstance;
+      }
+
+      public PrimaryConstructor getDefaultInstanceForType() {
+        return defaultInstance;
+      }
+
+      private PrimaryConstructor(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        initFields();
+        int mutable_bitField0_ = 0;
+        try {
+          boolean done = false;
+          while (!done) {
+            int tag = input.readTag();
+            switch (tag) {
+              case 0:
+                done = true;
+                break;
+              default: {
+                if (!parseUnknownField(input,
+                                       extensionRegistry, tag)) {
+                  done = true;
+                }
+                break;
+              }
+              case 10: {
+                org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.Builder subBuilder = null;
+                if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                  subBuilder = data_.toBuilder();
+                }
+                data_ = input.readMessage(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.PARSER, extensionRegistry);
+                if (subBuilder != null) {
+                  subBuilder.mergeFrom(data_);
+                  data_ = subBuilder.buildPartial();
+                }
+                bitField0_ |= 0x00000001;
+                break;
+              }
+            }
+          }
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.setUnfinishedMessage(this);
+        } catch (java.io.IOException e) {
+          throw new com.google.protobuf.InvalidProtocolBufferException(
+              e.getMessage()).setUnfinishedMessage(this);
+        } finally {
+          makeExtensionsImmutable();
+        }
+      }
+      public static com.google.protobuf.Parser<PrimaryConstructor> PARSER =
+          new com.google.protobuf.AbstractParser<PrimaryConstructor>() {
+        public PrimaryConstructor parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new PrimaryConstructor(input, extensionRegistry);
+        }
+      };
+
+      @java.lang.Override
+      public com.google.protobuf.Parser<PrimaryConstructor> getParserForType() {
+        return PARSER;
+      }
+
+      private int bitField0_;
+      // optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;
+      public static final int DATA_FIELD_NUMBER = 1;
+      private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable data_;
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+       *
+       * <pre>
+       * If this field is present, it contains serialized data for the primary constructor.
+       * Otherwise it's default and can be created manually upon deserialization
+       * </pre>
+       */
+      public boolean hasData() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+       *
+       * <pre>
+       * If this field is present, it contains serialized data for the primary constructor.
+       * Otherwise it's default and can be created manually upon deserialization
+       * </pre>
+       */
+      public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getData() {
+        return data_;
+      }
+
+      private void initFields() {
+        data_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
+      }
+      private byte memoizedIsInitialized = -1;
+      public final boolean isInitialized() {
+        byte isInitialized = memoizedIsInitialized;
+        if (isInitialized != -1) return isInitialized == 1;
+
+        if (hasData()) {
+          if (!getData().isInitialized()) {
+            memoizedIsInitialized = 0;
+            return false;
+          }
+        }
+        memoizedIsInitialized = 1;
+        return true;
+      }
+
+      public void writeTo(com.google.protobuf.CodedOutputStream output)
+                          throws java.io.IOException {
+        getSerializedSize();
+        if (((bitField0_ & 0x00000001) == 0x00000001)) {
+          output.writeMessage(1, data_);
+        }
+      }
+
+      private int memoizedSerializedSize = -1;
+      public int getSerializedSize() {
+        int size = memoizedSerializedSize;
+        if (size != -1) return size;
+
+        size = 0;
+        if (((bitField0_ & 0x00000001) == 0x00000001)) {
+          size += com.google.protobuf.CodedOutputStream
+            .computeMessageSize(1, data_);
+        }
+        memoizedSerializedSize = size;
+        return size;
+      }
+
+      private static final long serialVersionUID = 0L;
+      @java.lang.Override
+      protected java.lang.Object writeReplace()
+          throws java.io.ObjectStreamException {
+        return super.writeReplace();
+      }
+
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          com.google.protobuf.ByteString data)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          com.google.protobuf.ByteString data,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data, extensionRegistry);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(byte[] data)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          byte[] data,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data, extensionRegistry);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(java.io.InputStream input)
+          throws java.io.IOException {
+        return PARSER.parseFrom(input);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          java.io.InputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        return PARSER.parseFrom(input, extensionRegistry);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseDelimitedFrom(java.io.InputStream input)
+          throws java.io.IOException {
+        return PARSER.parseDelimitedFrom(input);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseDelimitedFrom(
+          java.io.InputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          com.google.protobuf.CodedInputStream input)
+          throws java.io.IOException {
+        return PARSER.parseFrom(input);
+      }
+      public static org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parseFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        return PARSER.parseFrom(input, extensionRegistry);
+      }
+
+      public static Builder newBuilder() { return Builder.create(); }
+      public Builder newBuilderForType() { return newBuilder(); }
+      public static Builder newBuilder(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor prototype) {
+        return newBuilder().mergeFrom(prototype);
+      }
+      public Builder toBuilder() { return newBuilder(this); }
+
+      /**
+       * Protobuf type {@code org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor}
+       */
+      public static final class Builder extends
+          com.google.protobuf.GeneratedMessageLite.Builder<
+            org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor, Builder>
+          implements org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructorOrBuilder {
+        // Construct using org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.newBuilder()
+        private Builder() {
+          maybeForceBuilderInitialization();
+        }
+
+        private void maybeForceBuilderInitialization() {
+        }
+        private static Builder create() {
+          return new Builder();
+        }
+
+        public Builder clear() {
+          super.clear();
+          data_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
+          bitField0_ = (bitField0_ & ~0x00000001);
+          return this;
+        }
+
+        public Builder clone() {
+          return create().mergeFrom(buildPartial());
+        }
+
+        public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor getDefaultInstanceForType() {
+          return org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance();
+        }
+
+        public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor build() {
+          org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor result = buildPartial();
+          if (!result.isInitialized()) {
+            throw newUninitializedMessageException(result);
+          }
+          return result;
+        }
+
+        public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor buildPartial() {
+          org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor result = new org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor(this);
+          int from_bitField0_ = bitField0_;
+          int to_bitField0_ = 0;
+          if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+            to_bitField0_ |= 0x00000001;
+          }
+          result.data_ = data_;
+          result.bitField0_ = to_bitField0_;
+          return result;
+        }
+
+        public Builder mergeFrom(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor other) {
+          if (other == org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance()) return this;
+          if (other.hasData()) {
+            mergeData(other.getData());
+          }
+          return this;
+        }
+
+        public final boolean isInitialized() {
+          if (hasData()) {
+            if (!getData().isInitialized()) {
+              
+              return false;
+            }
+          }
+          return true;
+        }
+
+        public Builder mergeFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws java.io.IOException {
+          org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor parsedMessage = null;
+          try {
+            parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+            parsedMessage = (org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor) e.getUnfinishedMessage();
+            throw e;
+          } finally {
+            if (parsedMessage != null) {
+              mergeFrom(parsedMessage);
+            }
+          }
+          return this;
+        }
+        private int bitField0_;
+
+        // optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;
+        private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable data_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public boolean hasData() {
+          return ((bitField0_ & 0x00000001) == 0x00000001);
+        }
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getData() {
+          return data_;
+        }
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public Builder setData(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable value) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          data_ = value;
+
+          bitField0_ |= 0x00000001;
+          return this;
+        }
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public Builder setData(
+            org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.Builder builderForValue) {
+          data_ = builderForValue.build();
+
+          bitField0_ |= 0x00000001;
+          return this;
+        }
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public Builder mergeData(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable value) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              data_ != org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance()) {
+            data_ =
+              org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.newBuilder(data_).mergeFrom(value).buildPartial();
+          } else {
+            data_ = value;
+          }
+
+          bitField0_ |= 0x00000001;
+          return this;
+        }
+        /**
+         * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable data = 1;</code>
+         *
+         * <pre>
+         * If this field is present, it contains serialized data for the primary constructor.
+         * Otherwise it's default and can be created manually upon deserialization
+         * </pre>
+         */
+        public Builder clearData() {
+          data_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
+
+          bitField0_ = (bitField0_ & ~0x00000001);
+          return this;
+        }
+
+        // @@protoc_insertion_point(builder_scope:org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor)
+      }
+
+      static {
+        defaultInstance = new PrimaryConstructor(true);
+        defaultInstance.initFields();
+      }
+
+      // @@protoc_insertion_point(class_scope:org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor)
+    }
+
     private int bitField0_;
     // optional int32 flags = 1 [default = 0];
     public static final int FLAGS_FIELD_NUMBER = 1;
@@ -5055,30 +5486,6 @@ public final class ProtoBuf {
       return classObjectPresent_;
     }
 
-    // optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;
-    public static final int PRIMARY_CONSTRUCTOR_FIELD_NUMBER = 10;
-    private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable primaryConstructor_;
-    /**
-     * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-     *
-     * <pre>
-     * todo: other constructors?
-     * </pre>
-     */
-    public boolean hasPrimaryConstructor() {
-      return ((bitField0_ & 0x00000010) == 0x00000010);
-    }
-    /**
-     * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-     *
-     * <pre>
-     * todo: other constructors?
-     * </pre>
-     */
-    public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getPrimaryConstructor() {
-      return primaryConstructor_;
-    }
-
     // repeated .org.jetbrains.jet.descriptors.serialization.Callable member = 11;
     public static final int MEMBER_FIELD_NUMBER = 11;
     private java.util.List<org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable> member_;
@@ -5138,6 +5545,30 @@ public final class ProtoBuf {
       return enumEntry_.get(index);
     }
 
+    // optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;
+    public static final int PRIMARY_CONSTRUCTOR_FIELD_NUMBER = 13;
+    private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor primaryConstructor_;
+    /**
+     * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+     *
+     * <pre>
+     * This field is present if and only if the class has a primary constructor
+     * </pre>
+     */
+    public boolean hasPrimaryConstructor() {
+      return ((bitField0_ & 0x00000010) == 0x00000010);
+    }
+    /**
+     * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+     *
+     * <pre>
+     * This field is present if and only if the class has a primary constructor
+     * </pre>
+     */
+    public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor getPrimaryConstructor() {
+      return primaryConstructor_;
+    }
+
     private void initFields() {
       flags_ = 0;
       extraVisibility_ = "";
@@ -5147,9 +5578,9 @@ public final class ProtoBuf {
       nestedClassName_ = java.util.Collections.emptyList();
       nestedObjectName_ = java.util.Collections.emptyList();
       classObjectPresent_ = false;
-      primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
       member_ = java.util.Collections.emptyList();
       enumEntry_ = java.util.Collections.emptyList();
+      primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance();
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -5172,14 +5603,14 @@ public final class ProtoBuf {
           return false;
         }
       }
-      if (hasPrimaryConstructor()) {
-        if (!getPrimaryConstructor().isInitialized()) {
+      for (int i = 0; i < getMemberCount(); i++) {
+        if (!getMember(i).isInitialized()) {
           memoizedIsInitialized = 0;
           return false;
         }
       }
-      for (int i = 0; i < getMemberCount(); i++) {
-        if (!getMember(i).isInitialized()) {
+      if (hasPrimaryConstructor()) {
+        if (!getPrimaryConstructor().isInitialized()) {
           memoizedIsInitialized = 0;
           return false;
         }
@@ -5215,15 +5646,15 @@ public final class ProtoBuf {
       if (((bitField0_ & 0x00000008) == 0x00000008)) {
         output.writeBool(9, classObjectPresent_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        output.writeMessage(10, primaryConstructor_);
-      }
       for (int i = 0; i < member_.size(); i++) {
         output.writeMessage(11, member_.get(i));
       }
       for (int i = 0; i < enumEntry_.size(); i++) {
         output.writeInt32(12, enumEntry_.get(i));
       }
+      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+        output.writeMessage(13, primaryConstructor_);
+      }
     }
 
     private int memoizedSerializedSize = -1;
@@ -5274,10 +5705,6 @@ public final class ProtoBuf {
         size += com.google.protobuf.CodedOutputStream
           .computeBoolSize(9, classObjectPresent_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(10, primaryConstructor_);
-      }
       for (int i = 0; i < member_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(11, member_.get(i));
@@ -5291,6 +5718,10 @@ public final class ProtoBuf {
         size += dataSize;
         size += 1 * getEnumEntryList().size();
       }
+      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(13, primaryConstructor_);
+      }
       memoizedSerializedSize = size;
       return size;
     }
@@ -5398,11 +5829,11 @@ public final class ProtoBuf {
         bitField0_ = (bitField0_ & ~0x00000040);
         classObjectPresent_ = false;
         bitField0_ = (bitField0_ & ~0x00000080);
-        primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
-        bitField0_ = (bitField0_ & ~0x00000100);
         member_ = java.util.Collections.emptyList();
-        bitField0_ = (bitField0_ & ~0x00000200);
+        bitField0_ = (bitField0_ & ~0x00000100);
         enumEntry_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000200);
+        primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance();
         bitField0_ = (bitField0_ & ~0x00000400);
         return this;
       }
@@ -5463,20 +5894,20 @@ public final class ProtoBuf {
           to_bitField0_ |= 0x00000008;
         }
         result.classObjectPresent_ = classObjectPresent_;
-        if (((from_bitField0_ & 0x00000100) == 0x00000100)) {
+        if (((bitField0_ & 0x00000100) == 0x00000100)) {
+          member_ = java.util.Collections.unmodifiableList(member_);
+          bitField0_ = (bitField0_ & ~0x00000100);
+        }
+        result.member_ = member_;
+        if (((bitField0_ & 0x00000200) == 0x00000200)) {
+          enumEntry_ = java.util.Collections.unmodifiableList(enumEntry_);
+          bitField0_ = (bitField0_ & ~0x00000200);
+        }
+        result.enumEntry_ = enumEntry_;
+        if (((from_bitField0_ & 0x00000400) == 0x00000400)) {
           to_bitField0_ |= 0x00000010;
         }
         result.primaryConstructor_ = primaryConstructor_;
-        if (((bitField0_ & 0x00000200) == 0x00000200)) {
-          member_ = java.util.Collections.unmodifiableList(member_);
-          bitField0_ = (bitField0_ & ~0x00000200);
-        }
-        result.member_ = member_;
-        if (((bitField0_ & 0x00000400) == 0x00000400)) {
-          enumEntry_ = java.util.Collections.unmodifiableList(enumEntry_);
-          bitField0_ = (bitField0_ & ~0x00000400);
-        }
-        result.enumEntry_ = enumEntry_;
         result.bitField0_ = to_bitField0_;
         return result;
       }
@@ -5537,13 +5968,10 @@ public final class ProtoBuf {
         if (other.hasClassObjectPresent()) {
           setClassObjectPresent(other.getClassObjectPresent());
         }
-        if (other.hasPrimaryConstructor()) {
-          mergePrimaryConstructor(other.getPrimaryConstructor());
-        }
         if (!other.member_.isEmpty()) {
           if (member_.isEmpty()) {
             member_ = other.member_;
-            bitField0_ = (bitField0_ & ~0x00000200);
+            bitField0_ = (bitField0_ & ~0x00000100);
           } else {
             ensureMemberIsMutable();
             member_.addAll(other.member_);
@@ -5553,13 +5981,16 @@ public final class ProtoBuf {
         if (!other.enumEntry_.isEmpty()) {
           if (enumEntry_.isEmpty()) {
             enumEntry_ = other.enumEntry_;
-            bitField0_ = (bitField0_ & ~0x00000400);
+            bitField0_ = (bitField0_ & ~0x00000200);
           } else {
             ensureEnumEntryIsMutable();
             enumEntry_.addAll(other.enumEntry_);
           }
           
         }
+        if (other.hasPrimaryConstructor()) {
+          mergePrimaryConstructor(other.getPrimaryConstructor());
+        }
         return this;
       }
 
@@ -5580,14 +6011,14 @@ public final class ProtoBuf {
             return false;
           }
         }
-        if (hasPrimaryConstructor()) {
-          if (!getPrimaryConstructor().isInitialized()) {
+        for (int i = 0; i < getMemberCount(); i++) {
+          if (!getMember(i).isInitialized()) {
             
             return false;
           }
         }
-        for (int i = 0; i < getMemberCount(); i++) {
-          if (!getMember(i).isInitialized()) {
+        if (hasPrimaryConstructor()) {
+          if (!getPrimaryConstructor().isInitialized()) {
             
             return false;
           }
@@ -6264,98 +6695,13 @@ public final class ProtoBuf {
         return this;
       }
 
-      // optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;
-      private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public boolean hasPrimaryConstructor() {
-        return ((bitField0_ & 0x00000100) == 0x00000100);
-      }
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable getPrimaryConstructor() {
-        return primaryConstructor_;
-      }
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public Builder setPrimaryConstructor(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        primaryConstructor_ = value;
-
-        bitField0_ |= 0x00000100;
-        return this;
-      }
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public Builder setPrimaryConstructor(
-          org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.Builder builderForValue) {
-        primaryConstructor_ = builderForValue.build();
-
-        bitField0_ |= 0x00000100;
-        return this;
-      }
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public Builder mergePrimaryConstructor(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable value) {
-        if (((bitField0_ & 0x00000100) == 0x00000100) &&
-            primaryConstructor_ != org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance()) {
-          primaryConstructor_ =
-            org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.newBuilder(primaryConstructor_).mergeFrom(value).buildPartial();
-        } else {
-          primaryConstructor_ = value;
-        }
-
-        bitField0_ |= 0x00000100;
-        return this;
-      }
-      /**
-       * <code>optional .org.jetbrains.jet.descriptors.serialization.Callable primary_constructor = 10;</code>
-       *
-       * <pre>
-       * todo: other constructors?
-       * </pre>
-       */
-      public Builder clearPrimaryConstructor() {
-        primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance();
-
-        bitField0_ = (bitField0_ & ~0x00000100);
-        return this;
-      }
-
       // repeated .org.jetbrains.jet.descriptors.serialization.Callable member = 11;
       private java.util.List<org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable> member_ =
         java.util.Collections.emptyList();
       private void ensureMemberIsMutable() {
-        if (!((bitField0_ & 0x00000200) == 0x00000200)) {
+        if (!((bitField0_ & 0x00000100) == 0x00000100)) {
           member_ = new java.util.ArrayList<org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable>(member_);
-          bitField0_ |= 0x00000200;
+          bitField0_ |= 0x00000100;
          }
       }
 
@@ -6460,7 +6806,7 @@ public final class ProtoBuf {
        */
       public Builder clearMember() {
         member_ = java.util.Collections.emptyList();
-        bitField0_ = (bitField0_ & ~0x00000200);
+        bitField0_ = (bitField0_ & ~0x00000100);
 
         return this;
       }
@@ -6477,9 +6823,9 @@ public final class ProtoBuf {
       // repeated int32 enum_entry = 12;
       private java.util.List<java.lang.Integer> enumEntry_ = java.util.Collections.emptyList();
       private void ensureEnumEntryIsMutable() {
-        if (!((bitField0_ & 0x00000400) == 0x00000400)) {
+        if (!((bitField0_ & 0x00000200) == 0x00000200)) {
           enumEntry_ = new java.util.ArrayList<java.lang.Integer>(enumEntry_);
-          bitField0_ |= 0x00000400;
+          bitField0_ |= 0x00000200;
          }
       }
       /**
@@ -6535,11 +6881,96 @@ public final class ProtoBuf {
        */
       public Builder clearEnumEntry() {
         enumEntry_ = java.util.Collections.emptyList();
-        bitField0_ = (bitField0_ & ~0x00000400);
+        bitField0_ = (bitField0_ & ~0x00000200);
         
         return this;
       }
 
+      // optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;
+      private org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance();
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public boolean hasPrimaryConstructor() {
+        return ((bitField0_ & 0x00000400) == 0x00000400);
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor getPrimaryConstructor() {
+        return primaryConstructor_;
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public Builder setPrimaryConstructor(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        primaryConstructor_ = value;
+
+        bitField0_ |= 0x00000400;
+        return this;
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public Builder setPrimaryConstructor(
+          org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.Builder builderForValue) {
+        primaryConstructor_ = builderForValue.build();
+
+        bitField0_ |= 0x00000400;
+        return this;
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public Builder mergePrimaryConstructor(org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor value) {
+        if (((bitField0_ & 0x00000400) == 0x00000400) &&
+            primaryConstructor_ != org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance()) {
+          primaryConstructor_ =
+            org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.newBuilder(primaryConstructor_).mergeFrom(value).buildPartial();
+        } else {
+          primaryConstructor_ = value;
+        }
+
+        bitField0_ |= 0x00000400;
+        return this;
+      }
+      /**
+       * <code>optional .org.jetbrains.jet.descriptors.serialization.Class.PrimaryConstructor primary_constructor = 13;</code>
+       *
+       * <pre>
+       * This field is present if and only if the class has a primary constructor
+       * </pre>
+       */
+      public Builder clearPrimaryConstructor() {
+        primaryConstructor_ = org.jetbrains.jet.descriptors.serialization.ProtoBuf.Class.PrimaryConstructor.getDefaultInstance();
+
+        bitField0_ = (bitField0_ & ~0x00000400);
+        return this;
+      }
+
       // @@protoc_insertion_point(builder_scope:org.jetbrains.jet.descriptors.serialization.Class)
     }
 

compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/descriptors/DeserializedClassDescriptor.java

@@ -209,8 +209,14 @@ public class DeserializedClassDescriptor extends AbstractClassDescriptor impleme
     private ConstructorDescriptor computePrimaryConstructor() {
         if (!classProto.hasPrimaryConstructor()) return null;
 
-        ProtoBuf.Callable constructorProto = classProto.getPrimaryConstructor();
-        return (ConstructorDescriptor) deserializer.loadCallable(constructorProto);
+        ProtoBuf.Class.PrimaryConstructor constructorProto = classProto.getPrimaryConstructor();
+        if (!constructorProto.hasData()) {
+            ConstructorDescriptorImpl descriptor = DescriptorFactory.createPrimaryConstructorForObject(this);
+            descriptor.setReturnType(getDefaultType());
+            return descriptor;
+        }
+
+        return (ConstructorDescriptor) deserializer.loadCallable(constructorProto.getData());
     }
 
     @Nullable

core/descriptors/src/org/jetbrains/jet/lang/resolve/DescriptorFactory.java

@@ -35,6 +35,14 @@ public class DescriptorFactory {
     public static final Name VALUE_OF_METHOD_NAME = Name.identifier("valueOf");
     public static final Name VALUES_METHOD_NAME = Name.identifier("values");
 
+    private static class DefaultConstructorDescriptor extends ConstructorDescriptorImpl {
+        public DefaultConstructorDescriptor(@NotNull ClassDescriptor containingClass) {
+            super(containingClass, Collections.<AnnotationDescriptor>emptyList(), true);
+            initialize(Collections.<TypeParameterDescriptor>emptyList(), Collections.<ValueParameterDescriptor>emptyList(),
+                       getDefaultConstructorVisibility(containingClass));
+        }
+    }
+
     private DescriptorFactory() {
     }
 
@@ -68,12 +76,11 @@ public class DescriptorFactory {
 
     @NotNull
     public static ConstructorDescriptorImpl createPrimaryConstructorForObject(@NotNull ClassDescriptor containingClass) {
-        ConstructorDescriptorImpl constructorDescriptor =
-                new ConstructorDescriptorImpl(containingClass, Collections.<AnnotationDescriptor>emptyList(), true);
-        constructorDescriptor.initialize(Collections.<TypeParameterDescriptor>emptyList(),
-                                         Collections.<ValueParameterDescriptor>emptyList(),
-                                         getDefaultConstructorVisibility(containingClass));
-        return constructorDescriptor;
+        return new DefaultConstructorDescriptor(containingClass);
+    }
+
+    public static boolean isDefaultPrimaryConstructor(@NotNull ConstructorDescriptor constructor) {
+        return constructor instanceof DefaultConstructorDescriptor;
     }
 
     @NotNull