Move MessageWriter from snapshot files to dart_api_message files

runtime/vm/snapshot.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bootstrap.h"
 #include "vm/exceptions.h"
 #include "vm/heap.h"
@@ skipping 419 matching lines @@
 #undef SNAPSHOT_READ
     default: UNREACHABLE(); break;
   }
   if (kind_ == Snapshot::kFull) {
     obj_.SetCreatedFromSnapshot();
   }
   return obj_.raw();
 }
 
 
-void MessageWriter::WriteMessage(intptr_t field_count, intptr_t *data) {
-  // Write out the serialization header value for this object.
-  WriteSerializationMarker(kInlined, kMaxPredefinedObjectIds);
-
-  // Write out the class and tags information.
-  WriteObjectHeader(ObjectStore::kArrayClass, 0);
-
-  // Write out the length field.
-  Write<RawObject*>(Smi::New(field_count));
-
-  // Write out the type arguments.
-  WriteIndexedObject(Object::kNullObject);
-
-  // Write out the individual Smis.
-  for (int i = 0; i < field_count; i++) {
-    Write<RawObject*>(Integer::New(data[i]));
-  }
-
-  FinalizeBuffer();
-}
-
-
-void MessageWriter::MarkCObject(Dart_CObject* object, intptr_t object_id) {
-  // Mark the object as serialized by adding the object id to the
-  // upper bits of the type field in the Dart_CObject structure. Add
-  // an offset for making marking of object id 0 possible.
-  ASSERT(!IsCObjectMarked(object));
-  intptr_t mark_value = object_id + kDartCObjectMarkOffset;
-  object->type = static_cast<Dart_CObject::Type>(
-      ((mark_value) << kDartCObjectTypeBits) | object->type);
-}
-
-
-void MessageWriter::UnmarkCObject(Dart_CObject* object) {
-  ASSERT(IsCObjectMarked(object));
-  object->type = static_cast<Dart_CObject::Type>(
-      object->type & kDartCObjectTypeMask);
-}
-
-
-bool MessageWriter::IsCObjectMarked(Dart_CObject* object) {
-  return (object->type & kDartCObjectMarkMask) != 0;
-}
-
-
-intptr_t MessageWriter::GetMarkedCObjectMark(Dart_CObject* object) {
-  ASSERT(IsCObjectMarked(object));
-  intptr_t mark_value = ((object->type & kDartCObjectMarkMask) >> 3);
-  // An offset was added to object id for making marking object id 0 possible.
-  return mark_value - kDartCObjectMarkOffset;
-}
-
-
-void MessageWriter::UnmarkAllCObjects(Dart_CObject* object) {
-  if (!IsCObjectMarked(object)) return;
-  UnmarkCObject(object);
-  if (object->type == Dart_CObject::kArray) {
-    for (int i = 0; i < object->value.as_array.length; i++) {
-      Dart_CObject* element = object->value.as_array.values[i];
-      UnmarkAllCObjects(element);
-    }
-  }
-}
-
-
-void MessageWriter::WriteSmi(int64_t value) {
-  ASSERT(Smi::IsValid64(value));
-  Write<RawObject*>(Smi::New(value));
-}
-
-
-void MessageWriter::WriteMint(Dart_CObject* object, int64_t value) {
-  ASSERT(!Smi::IsValid64(value));
-  // Write out the serialization header value for mint object.
-  WriteInlinedHeader(object);
-  // Write out the class and tags information.
-  WriteObjectHeader(ObjectStore::kMintClass, 0);
-  // Write the 64-bit value.
-  Write<int64_t>(value);
-}
-
-
-void MessageWriter::WriteInt32(Dart_CObject* object) {
-  int64_t value = object->value.as_int32;
-  if (Smi::IsValid64(value)) {
-    WriteSmi(value);
-  } else {
-    WriteMint(object, value);
-  }
-}
-
-
-void MessageWriter::WriteInt64(Dart_CObject* object) {
-  int64_t value = object->value.as_int64;
-  if (Smi::IsValid64(value)) {
-    WriteSmi(value);
-  } else {
-    WriteMint(object, value);
-  }
-}
-
-
-void MessageWriter::WriteInlinedHeader(Dart_CObject* object) {
-  // Write out the serialization header value for this object.
-  WriteSerializationMarker(kInlined, kMaxPredefinedObjectIds + object_id_);
-  // Mark object with its object id.
-  MarkCObject(object, object_id_);
-  // Advance object id.
-  object_id_++;
-}
-
-
-void MessageWriter::WriteCObject(Dart_CObject* object) {
-  if (IsCObjectMarked(object)) {
-    intptr_t object_id = GetMarkedCObjectMark(object);
-    WriteIndexedObject(kMaxPredefinedObjectIds + object_id);
-    return;
-  }
-
-  switch (object->type) {
-    case Dart_CObject::kNull:
-      WriteIndexedObject(Object::kNullObject);
-      break;
-    case Dart_CObject::kBool:
-      if (object->value.as_bool) {
-        WriteIndexedObject(ObjectStore::kTrueValue);
-      } else {
-        WriteIndexedObject(ObjectStore::kFalseValue);
-      }
-      break;
-    case Dart_CObject::kInt32:
-      WriteInt32(object);
-      break;
-    case Dart_CObject::kInt64:
-      WriteInt64(object);
-      break;
-    case Dart_CObject::kBigint: {
-      // Write out the serialization header value for this object.
-      WriteInlinedHeader(object);
-      // Write out the class and tags information.
-      WriteObjectHeader(ObjectStore::kBigintClass, 0);
-      // Write hex string length and content
-      char* hex_string = object->value.as_bigint;
-      intptr_t len = strlen(hex_string);
-      WriteIntptrValue(len);
-      for (intptr_t i = 0; i < len; i++) {
-        Write<uint8_t>(hex_string[i]);
-      }
-      break;
-    }
-    case Dart_CObject::kDouble:
-      // Write out the serialization header value for this object.
-      WriteInlinedHeader(object);
-      // Write out the class and tags information.
-      WriteObjectHeader(ObjectStore::kDoubleClass, 0);
-      // Write double value.
-      Write<double>(object->value.as_double);
-      break;
-    case Dart_CObject::kString: {
-      // Write out the serialization header value for this object.
-      WriteInlinedHeader(object);
-      // Write out the class and tags information.
-      WriteObjectHeader(ObjectStore::kOneByteStringClass, 0);
-      // Write string length, hash and content
-      char* str = object->value.as_string;
-      intptr_t len = strlen(str);
-      WriteSmi(len);
-      WriteSmi(0);  // TODO(sgjesse): Hash - not written.
-      for (intptr_t i = 0; i < len; i++) {
-        Write<uint8_t>(str[i]);
-      }
-      break;
-    }
-    case Dart_CObject::kArray: {
-      // Write out the serialization header value for this object.
-      WriteInlinedHeader(object);
-      // Write out the class and tags information.
-      WriteObjectHeader(ObjectStore::kArrayClass, 0);
-      WriteSmi(object->value.as_array.length);
-      // Write out the type arguments.
-      WriteIndexedObject(Object::kNullObject);
-      // Write out array elements.
-      for (int i = 0; i < object->value.as_array.length; i++) {
-        WriteCObject(object->value.as_array.values[i]);
-      }
-      break;
-    }
-    case Dart_CObject::kByteArray: {
-      // Write out the serialization header value for this object.
-      WriteInlinedHeader(object);
-      // Write out the class and tags information.
-      WriteObjectHeader(ObjectStore::kInternalByteArrayClass, 0);
-      uint8_t* bytes = object->value.as_byte_array.values;
-      intptr_t len = object->value.as_byte_array.length;
-      WriteSmi(len);
-      for (intptr_t i = 0; i < len; i++) {
-        Write<uint8_t>(bytes[i]);
-      }
-      break;
-    }
-    default:
-      UNREACHABLE();
-  }
-}
-
-
-void MessageWriter::WriteCMessage(Dart_CObject* object) {
-  WriteCObject(object);
-  UnmarkAllCObjects(object);
-  FinalizeBuffer();
-}
-
-
 void SnapshotWriter::WriteObject(RawObject* rawobj) {
   // An object is written in one of the following ways:
   // - Smi: the Smi value is written as is (last bit is not tagged).
   // - VM internal class (from VM isolate): (index of class in vm isolate | 0x3)
   // - Object that has already been written: (negative id in stream | 0x3)
   // - Object that is seen for the first time (inlined as follows):
   //    (object size in multiples of kObjectAlignment | 0x1)
   //    serialized fields of the object
   //    ......
 
@@ skipping 190 matching lines @@
 
 
 void SnapshotWriterVisitor::VisitPointers(RawObject** first, RawObject** last) {
   for (RawObject** current = first; current <= last; current++) {
     RawObject* raw_obj = *current;
     writer_->WriteObject(raw_obj);
   }
 }
 
 }  // namespace dart