VM: [Kernel] Partial support for metadata annotations

runtime/vm/object.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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/become.h"
@@ skipping 11 matching lines @@
 #include "vm/debugger.h"
 #include "vm/deopt_instructions.h"
 #include "vm/disassembler.h"
 #include "vm/double_conversion.h"
 #include "vm/exceptions.h"
 #include "vm/growable_array.h"
 #include "vm/hash_table.h"
 #include "vm/heap.h"
 #include "vm/intrinsifier.h"
 #include "vm/isolate_reload.h"
+#include "vm/kernel_to_il.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/precompiler.h"
 #include "vm/profiler.h"
 #include "vm/resolver.h"
 #include "vm/reusable_handles.h"
 #include "vm/runtime_entry.h"
 #include "vm/scopes.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
@@ skipping 9616 matching lines @@
   GrowableHandlePtrArray<const String> pieces(zone, 3);
   pieces.Add(cname);
   pieces.Add(Symbols::At());
   pieces.Add(String::Handle(param.name()));
   return Symbols::FromConcatAll(thread, pieces);
 }
 
 
 void Library::AddMetadata(const Object& owner,
                           const String& name,
-                          TokenPosition token_pos) const {
+                          TokenPosition token_pos,
+                          kernel::TreeNode* kernel_node) const {
   Thread* thread = Thread::Current();
   ASSERT(thread->IsMutatorThread());
   Zone* zone = thread->zone();
   const String& metaname = String::Handle(zone, Symbols::New(thread, name));
   const Field& field =
       Field::Handle(zone, Field::NewTopLevel(metaname,
                                              false,  // is_final
                                              false,  // is_const
                                              owner, token_pos));
   field.SetFieldType(Object::dynamic_type());
   field.set_is_reflectable(false);
   field.SetStaticValue(Array::empty_array(), true);
+  field.set_kernel_field(kernel_node);
   GrowableObjectArray& metadata =
       GrowableObjectArray::Handle(zone, this->metadata());
   metadata.Add(field, Heap::kOld);
 }
 
 
 void Library::AddClassMetadata(const Class& cls,
                                const Object& tl_owner,
-                               TokenPosition token_pos) const {
+                               TokenPosition token_pos,
+                               kernel::TreeNode* kernel_node) const {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   // We use the toplevel class as the owner of a class's metadata field because
   // a class's metadata is in scope of the library, not the class.
   AddMetadata(tl_owner,
               String::Handle(zone, MakeClassMetaName(thread, zone, cls)),
-              token_pos);
+              token_pos, kernel_node);
 }
 
 
 void Library::AddFieldMetadata(const Field& field,
-                               TokenPosition token_pos) const {
+                               TokenPosition token_pos,
+                               kernel::TreeNode* kernel_node) const {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   AddMetadata(Object::Handle(zone, field.RawOwner()),
               String::Handle(zone, MakeFieldMetaName(thread, zone, field)),
-              token_pos);
+              token_pos, kernel_node);
 }
 
 
 void Library::AddFunctionMetadata(const Function& func,
-                                  TokenPosition token_pos) const {
+                                  TokenPosition token_pos,
+                                  kernel::TreeNode* kernel_node) const {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   AddMetadata(Object::Handle(zone, func.RawOwner()),
               String::Handle(zone, MakeFunctionMetaName(thread, zone, func)),
-              token_pos);
+              token_pos, kernel_node);
 }
 
 
 void Library::AddTypeParameterMetadata(const TypeParameter& param,
                                        TokenPosition token_pos) const {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   AddMetadata(
       Class::Handle(zone, param.parameterized_class()),
       String::Handle(zone, MakeTypeParameterMetaName(thread, zone, param)),
@@ skipping 51 matching lines @@
   }
   const String& metaname = String::Handle(MakeMetadataName(obj));
   Field& field = Field::Handle(GetMetadataField(metaname));
   if (field.IsNull()) {
     // There is no metadata for this object.
     return Object::empty_array().raw();
   }
   Object& metadata = Object::Handle();
   metadata = field.StaticValue();
   if (field.StaticValue() == Object::empty_array().raw()) {
-    metadata = Parser::ParseMetadata(field);
+    kernel::TreeNode* kernel_node =
+        reinterpret_cast<kernel::TreeNode*>(field.kernel_field());
+
+    if (kernel_node != NULL) {
+      metadata = kernel::EvaluateMetadata(kernel_node);
+    } else {
+      metadata = Parser::ParseMetadata(field);
+    }
     if (metadata.IsArray()) {
       ASSERT(Array::Cast(metadata).raw() != Object::empty_array().raw());
       field.SetStaticValue(Array::Cast(metadata), true);
     }
   }
   return metadata.raw();
 }
 
 
 static bool ShouldBePrivate(const String& name) {
@@ skipping 13184 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart