Implement eager instantiation and canonicalization of type arguments at run

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 137 matching lines @@
     : BaseReader(buffer, size),
       kind_(kind),
       isolate_(isolate),
       cls_(Class::Handle()),
       obj_(Object::Handle()),
       array_(Array::Handle()),
       field_(Field::Handle()),
       str_(String::Handle()),
       library_(Library::Handle()),
       type_(AbstractType::Handle()),
-      type_arguments_(AbstractTypeArguments::Handle()),
+      type_arguments_(TypeArguments::Handle()),
       tokens_(Array::Handle()),
       stream_(TokenStream::Handle()),
       data_(ExternalTypedData::Handle()),
       error_(UnhandledException::Handle()),
       backward_references_((kind == Snapshot::kFull) ?
                            kNumInitialReferencesInFullSnapshot :
                            kNumInitialReferences) {
 }
 
 
@@ skipping 1185 matching lines @@
   ASSERT(library != Library::null());
   WriteObjectImpl(library->ptr()->url_);
   WriteObjectImpl(cls->ptr()->name_);
 }
 
 
 void SnapshotWriter::ArrayWriteTo(intptr_t object_id,
                                   intptr_t array_kind,
                                   intptr_t tags,
                                   RawSmi* length,
-                                  RawAbstractTypeArguments* type_arguments,
+                                  RawTypeArguments* type_arguments,
                                   RawObject* data[]) {
   intptr_t len = Smi::Value(length);
 
   // Write out the serialization header value for this object.
   WriteInlinedObjectHeader(object_id);
 
   // Write out the class and tags information.
   WriteIndexedObject(array_kind);
   WriteIntptrValue(tags);
 
@@ skipping 156 matching lines @@
     NoGCScope no_gc;
     WriteObject(obj.raw());
     UnmarkAll();
   } else {
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart