Implement closure with type arguments.

runtime/vm/intermediate_language.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 VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 632 matching lines @@
  private:
   const ArrayNode& ast_node_;
   ZoneGrowableArray<Value*>* const elements_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateArrayComp);
 };
 
 
 class CreateClosureComp : public Computation {
  public:
-  explicit CreateClosureComp(ClosureNode* node) : ast_node_(*node) { }
+  // 'type_arguments' is null if function() does not require type arguments.
+  CreateClosureComp(ClosureNode* node, Value* type_arguments)
+      : ast_node_(*node), type_arguments_(type_arguments) { }
 
   DECLARE_COMPUTATION(CreateClosure)
 
   intptr_t token_index() const { return ast_node_.token_index(); }
   const Function& function() const { return ast_node_.function(); }
+  Value* type_arguments() const { return type_arguments_; }
 
  private:
   const ClosureNode& ast_node_;
+  Value* type_arguments_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateClosureComp);
 };
 
 
 class NativeLoadFieldComp : public Computation {
  public:
   NativeLoadFieldComp(Value* value, intptr_t offset_in_bytes)
       : value_(value), offset_in_bytes_(offset_in_bytes) {
     ASSERT(value != NULL);
@@ skipping 612 matching lines @@
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_