Implement 'dart:typeddata' directly in the VM instead of using 'dart:scalarlist'

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/bigint_operations.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
@@ skipping 15 matching lines @@
   // Check if this is a singleton object class which is shared by all isolates.
   return ((class_id >= kClassCid && class_id <= kUnwindErrorCid) ||
           (class_id >= kNullCid && class_id <= kVoidCid));
 }
 
 
 static bool IsObjectStoreClassId(intptr_t class_id) {
   // Check if this is a class which is stored in the object store.
   return (class_id == kObjectCid ||
           (class_id >= kInstanceCid && class_id <= kWeakPropertyCid) ||
-          RawObject::IsStringClassId(class_id));
+          RawObject::IsStringClassId(class_id) ||
+          RawObject::IsTypedDataClassId(class_id) ||
+          RawObject::IsExternalTypedDataClassId(class_id));
 }
 
 
 static bool IsObjectStoreTypeId(intptr_t index) {
   // Check if this is a type which is stored in the object store.
   return (index >= kObjectType && index <= kArrayType);
 }
 
 
 static intptr_t ClassIdFromObjectId(intptr_t object_id) {
@@ skipping 258 matching lines @@
   // For all other internal VM classes we read the object inline.
   intptr_t tags = ReadIntptrValue();
   switch (class_id) {
 #define SNAPSHOT_READ(clazz)                                                   \
     case clazz::kClassId: {                                                    \
       obj_ = clazz::ReadFrom(this, object_id, tags, kind_);                    \
       break;                                                                   \
     }
     CLASS_LIST_NO_OBJECT(SNAPSHOT_READ)
 #undef SNAPSHOT_READ
+#define SNAPSHOT_READ(clazz)                                                   \
+    case kTypedData##clazz##Cid: {                                             \
+      obj_ = TypedData::ReadFrom(this, object_id, tags, kind_);                \
+      break;                                                                   \
+    }
+    CLASS_LIST_TYPED_DATA(SNAPSHOT_READ)
+#undef SNAPSHOT_READ
     default: UNREACHABLE(); break;
   }
   if (kind_ == Snapshot::kFull) {
     obj_.SetCreatedFromSnapshot();
   }
   return obj_.raw();
 }
 
 
 void SnapshotReader::AddBackRef(intptr_t id,
@@ skipping 116 matching lines @@
   obj->ptr()->num_variables_ = num_variables;
   return obj;
 }
 
 
 RawClass* SnapshotReader::NewClass(intptr_t class_id) {
   ASSERT(kind_ == Snapshot::kFull);
   ASSERT(isolate()->no_gc_scope_depth() != 0);
   if (class_id < kNumPredefinedCids) {
     ASSERT((class_id >= kInstanceCid) &&
-           (class_id <= kExternalTwoByteStringCid));
+           (class_id <= kExternalTypedDataFloat64ArrayCid));
     return isolate()->class_table()->At(class_id);
   }
   cls_ = Object::class_class();
   RawClass* obj = reinterpret_cast<RawClass*>(
       AllocateUninitialized(cls_, Class::InstanceSize()));
   Instance fake;
   obj->ptr()->handle_vtable_ = fake.vtable();
   cls_ = obj;
   cls_.set_id(kIllegalCid);
   isolate()->class_table()->Register(cls_);
@@ skipping 315 matching lines @@
   cls_ = LookupInternalClass(class_header);
   ASSERT(!cls_.IsNull());
   switch (cls_.id()) {
 #define SNAPSHOT_READ(clazz)                                                   \
     case clazz::kClassId: {                                                    \
       obj_ = clazz::ReadFrom(this, object_id, tags, kind_);                    \
       break;                                                                   \
     }
     CLASS_LIST_NO_OBJECT(SNAPSHOT_READ)
 #undef SNAPSHOT_READ
+#define SNAPSHOT_READ(clazz)                                                   \
+    case kTypedData##clazz##Cid: {                                             \
+      obj_ = TypedData::ReadFrom(this, object_id, tags, kind_);                \
+      break;                                                                   \
+    }
+    CLASS_LIST_TYPED_DATA(SNAPSHOT_READ)
+#undef SNAPSHOT_READ
     default: UNREACHABLE(); break;
   }
   if (kind_ == Snapshot::kFull) {
     obj_.SetCreatedFromSnapshot();
   }
   return obj_.raw();
 }
 
 
 void SnapshotReader::ArrayReadFrom(const Array& result,
@@ skipping 173 matching lines @@
   switch (class_id) {
 #define SNAPSHOT_WRITE(clazz)                                                  \
     case clazz::kClassId: {                                                    \
       Raw##clazz* raw_obj = reinterpret_cast<Raw##clazz*>(raw);                \
       raw_obj->WriteTo(this, object_id, kind_);                                \
       return;                                                                  \
     }                                                                          \
 
     CLASS_LIST_NO_OBJECT(SNAPSHOT_WRITE)
 #undef SNAPSHOT_WRITE
+#define SNAPSHOT_WRITE(clazz)                                                  \
+    case kTypedData##clazz##Cid: {                                             \
+      RawTypedData* raw_obj = reinterpret_cast<RawTypedData*>(raw);            \
+      raw_obj->WriteTo(this, object_id, kind_);                                \
+      return;                                                                  \
+    }                                                                          \
+    case kExternalTypedData##clazz##Cid: {                                     \
+      RawExternalTypedData* raw_obj =                                          \
+        reinterpret_cast<RawExternalTypedData*>(raw);                          \
+      raw_obj->WriteTo(this, object_id, kind_);                                \
+      return;                                                                  \
+    }                                                                          \
+
+    CLASS_LIST_TYPED_DATA(SNAPSHOT_WRITE)
+#undef SNAPSHOT_WRITE
     default: break;
   }
   UNREACHABLE();
 }
 
 
 void FullSnapshotWriter::WriteFullSnapshot() {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
   ObjectStore* object_store = isolate->object_store();
@@ skipping 210 matching lines @@
   switch (class_id) {
 #define SNAPSHOT_WRITE(clazz)                                                  \
     case clazz::kClassId: {                                                    \
       Raw##clazz* raw_obj = reinterpret_cast<Raw##clazz*>(raw);                \
       raw_obj->WriteTo(this, object_id, kind_);                                \
       return;                                                                  \
     }                                                                          \
 
     CLASS_LIST_NO_OBJECT(SNAPSHOT_WRITE)
 #undef SNAPSHOT_WRITE
+#define SNAPSHOT_WRITE(clazz)                                                  \
+    case kTypedData##clazz##Cid: {                                             \
+      RawTypedData* raw_obj = reinterpret_cast<RawTypedData*>(raw);            \
+      raw_obj->WriteTo(this, object_id, kind_);                                \
+      return;                                                                  \
+    }                                                                          \
+    case kExternalTypedData##clazz##Cid: {                                     \
+      RawExternalTypedData* raw_obj =                                          \
+        reinterpret_cast<RawExternalTypedData*>(raw);                          \
+      raw_obj->WriteTo(this, object_id, kind_);                                \
+      return;                                                                  \
+    }                                                                          \
+
+    CLASS_LIST_TYPED_DATA(SNAPSHOT_WRITE)
+#undef SNAPSHOT_WRITE
     default: break;
   }
   UNREACHABLE();
 }
 
 
 void SnapshotWriter::WriteForwardedObjects() {
   // Write out all objects that were added to the forward list and have
   // not been serialized yet. These would typically be fields of instance
   // objects, arrays or immutable arrays (this is done in order to avoid
@@ skipping 135 matching lines @@
     UnmarkAll();
     isolate->set_long_jump_base(base);
   } else {
     isolate->set_long_jump_base(base);
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart