Introduce a SignatureData class so that signature functions can store both their

runtime/vm/object.h

 // 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.
 
 #ifndef RUNTIME_VM_OBJECT_H_
 #define RUNTIME_VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 470 matching lines @@
   static void set_vm_isolate_snapshot_object_table(const Array& table);
 
   static RawClass* class_class() { return class_class_; }
   static RawClass* dynamic_class() { return dynamic_class_; }
   static RawClass* void_class() { return void_class_; }
   static RawClass* unresolved_class_class() { return unresolved_class_class_; }
   static RawClass* type_arguments_class() { return type_arguments_class_; }
   static RawClass* patch_class_class() { return patch_class_class_; }
   static RawClass* function_class() { return function_class_; }
   static RawClass* closure_data_class() { return closure_data_class_; }
+  static RawClass* signature_data_class() { return signature_data_class_; }
   static RawClass* redirection_data_class() { return redirection_data_class_; }
   static RawClass* field_class() { return field_class_; }
   static RawClass* literal_token_class() { return literal_token_class_; }
   static RawClass* token_stream_class() { return token_stream_class_; }
   static RawClass* script_class() { return script_class_; }
   static RawClass* library_class() { return library_class_; }
   static RawClass* namespace_class() { return namespace_class_; }
   static RawClass* code_class() { return code_class_; }
   static RawClass* instructions_class() { return instructions_class_; }
   static RawClass* object_pool_class() { return object_pool_class_; }
@@ skipping 237 matching lines @@
   static RawObject* null_;
 
   static RawClass* class_class_;             // Class of the Class vm object.
   static RawClass* dynamic_class_;           // Class of the 'dynamic' type.
   static RawClass* void_class_;              // Class of the 'void' type.
   static RawClass* unresolved_class_class_;  // Class of UnresolvedClass.
   static RawClass* type_arguments_class_;  // Class of TypeArguments vm object.
   static RawClass* patch_class_class_;     // Class of the PatchClass vm object.
   static RawClass* function_class_;        // Class of the Function vm object.
   static RawClass* closure_data_class_;    // Class of ClosureData vm obj.
+  static RawClass* signature_data_class_;  // Class of SignatureData vm obj.
   static RawClass* redirection_data_class_;  // Class of RedirectionData vm obj.
   static RawClass* field_class_;             // Class of the Field vm object.
   static RawClass* literal_token_class_;     // Class of LiteralToken vm object.
   static RawClass* token_stream_class_;  // Class of the TokenStream vm object.
   static RawClass* script_class_;        // Class of the Script vm object.
   static RawClass* library_class_;       // Class of the Library vm object.
   static RawClass* namespace_class_;     // Class of Namespace vm object.
   static RawClass* code_class_;          // Class of the Code vm object.
   static RawClass* instructions_class_;  // Class of the Instructions vm object.
   static RawClass* object_pool_class_;   // Class of the ObjectPool vm object.
@@ skipping 2257 matching lines @@
 
   static RawClosureData* New();
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(ClosureData, Object);
   friend class Class;
   friend class Function;
   friend class HeapProfiler;
 };
 
 
+class SignatureData : public Object {
+ public:
+  static intptr_t InstanceSize() {
+    return RoundedAllocationSize(sizeof(RawSignatureData));
+  }
+
+ private:
+  // Enclosing function of this signature function.
+  RawFunction* parent_function() const { return raw_ptr()->parent_function_; }
+  void set_parent_function(const Function& value) const;
+
+  // Signature type of this signature function.
+  RawType* signature_type() const { return raw_ptr()->signature_type_; }
+  void set_signature_type(const Type& value) const;
+
+  static RawSignatureData* New();
+
+  FINAL_HEAP_OBJECT_IMPLEMENTATION(SignatureData, Object);
+  friend class Class;
+  friend class Function;
+  friend class HeapProfiler;
+};
+
+
 class RedirectionData : public Object {
  public:
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawRedirectionData));
   }
 
  private:
   // The type specifies the class and type arguments of the target constructor.
   RawType* type() const { return raw_ptr()->type_; }
   void set_type(const Type& value) const;
@@ skipping 5869 matching lines @@
 
 inline void TypeArguments::SetHash(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   StoreSmi(&raw_ptr()->hash_, Smi::New(value));
 }
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_OBJECT_H_