Better typing and type verification

src/compiler/graph.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_GRAPH_H_
 #define V8_COMPILER_GRAPH_H_
 
 #include <map>
 #include <set>
 
 #include "src/compiler/generic-algorithm.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-aux-data.h"
 #include "src/compiler/source-position.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class GraphDecorator;
 
 
 class Graph : public GenericGraph<Node> {
  public:
   explicit Graph(Zone* zone);
 
   // Base implementation used by all factory methods.
-  Node* NewNode(const Operator* op, int input_count, Node** inputs);
+  Node* NewNode(const Operator* op, int input_count, Node** inputs,
+                bool incomplete = false);
 
   // Factories for nodes with static input counts.
   Node* NewNode(const Operator* op) {
     return NewNode(op, 0, static_cast<Node**>(NULL));
   }
   Node* NewNode(const Operator* op, Node* n1) { return NewNode(op, 1, &n1); }
   Node* NewNode(const Operator* op, Node* n1, Node* n2) {
     Node* nodes[] = {n1, n2};
     return NewNode(op, arraysize(nodes), nodes);
   }
@@ skipping 18 matching lines @@
 
   template <class Visitor>
   void VisitNodeUsesFrom(Node* node, Visitor* visitor);
 
   template <class Visitor>
   void VisitNodeUsesFromStart(Visitor* visitor);
 
   template <class Visitor>
   void VisitNodeInputsFromEnd(Visitor* visitor);
 
+  void Decorate(Node* node);
+
   void AddDecorator(GraphDecorator* decorator) {
     decorators_.push_back(decorator);
   }
 
   void RemoveDecorator(GraphDecorator* decorator) {
     ZoneVector<GraphDecorator*>::iterator it =
         std::find(decorators_.begin(), decorators_.end(), decorator);
     DCHECK(it != decorators_.end());
     decorators_.erase(it, it + 1);
   }
 
  private:
   ZoneVector<GraphDecorator*> decorators_;
 };
 
 
 class GraphDecorator : public ZoneObject {
  public:
   virtual ~GraphDecorator() {}
   virtual void Decorate(Node* node) = 0;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_GRAPH_H_