Introduce a stack-allocated structure to encapsulate compile-time information.

src/compiler.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "frame-element.h"
 #include "parser.h"
 #include "zone.h"
 
 namespace v8 {
 namespace internal {
 
+// CompilationInfo encapsulates some information known at compile time.
+class CompilationInfo BASE_EMBEDDED {
+ public:
+  CompilationInfo(Handle<SharedFunctionInfo> shared_info,
+                  Handle<Object> receiver,
+                  int loop_nesting)
+      : shared_info_(shared_info),
+        receiver_(receiver_),
+        loop_nesting_(loop_nesting) {
+  }
+
+  Handle<SharedFunctionInfo> shared_info() { return shared_info_; }
+
+  bool has_receiver() { return !receiver_.is_null(); }
+  Handle<Object> receiver() { return receiver_; }
+
+  int loop_nesting() { return loop_nesting_; }
+
+ private:
+  Handle<SharedFunctionInfo> shared_info_;
+  Handle<Object> receiver_;
+  int loop_nesting_;
+};
+
+
 // The V8 compiler
 //
 // General strategy: Source code is translated into an anonymous function w/o
 // parameters which then can be executed. If the source code contains other
 // functions, they will be compiled and allocated as part of the compilation
 // of the source code.
 
 // Please note this interface returns function boilerplates.
 // This means you need to call Factory::NewFunctionFromBoilerplate
 // before you have a real function with context.
@@ skipping 15 matching lines @@
 
   // Compile a String source within a context for Eval.
   static Handle<JSFunction> CompileEval(Handle<String> source,
                                         Handle<Context> context,
                                         bool is_global,
                                         ValidationState validation);
 
   // Compile from function info (used for lazy compilation). Returns
   // true on success and false if the compilation resulted in a stack
   // overflow.
-  static bool CompileLazy(Handle<SharedFunctionInfo> shared,
-                          Handle<Object> receiver,
-                          int loop_nesting);
+  static bool CompileLazy(CompilationInfo* info);
 
   // Compile a function boilerplate object (the function is possibly
   // lazily compiled). Called recursively from a backend code
   // generator 'caller' to build the boilerplate.
   static Handle<JSFunction> BuildBoilerplate(FunctionLiteral* node,
                                              Handle<Script> script,
                                              AstVisitor* caller);
 
   // Set the function info for a newly compiled function.
   static void SetFunctionInfo(Handle<JSFunction> fun,
@@ skipping 14 matching lines @@
       FrameElement::ClearConstantList();
       Result::ClearConstantList();
     }
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_