Initial implementation of top-level compilation of expressions in test...

src/fast-codegen.h

 // Copyright 2009 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 21 matching lines @@
 
 #include "ast.h"
 
 namespace v8 {
 namespace internal {
 
 
 class FastCodeGenerator: public AstVisitor {
  public:
   FastCodeGenerator(MacroAssembler* masm, Handle<Script> script, bool is_eval)
-    : masm_(masm), function_(NULL), script_(script), is_eval_(is_eval) {
+      : masm_(masm),
+        function_(NULL),
+        script_(script),
+        is_eval_(is_eval),
+        true_label_(NULL),
+        false_label_(NULL) {
   }
 
   static Handle<Code> MakeCode(FunctionLiteral* fun,
                                Handle<Script> script,
                                bool is_eval);
 
   void Generate(FunctionLiteral* fun);
 
  private:
   int SlotOffset(Slot* slot);
 
   void Move(Expression::Context destination, Register source);
   void Move(Expression::Context destination, Slot* source);
   void Move(Expression::Context destination, Literal* source);
 
   // Drop the TOS, and store source to destination.
   // If destination is TOS, just overwrite TOS with source.
   void DropAndMove(Expression::Context destination, Register source);
 
+  // Test the JavaScript value in source as if in a test context, compile
+  // control flow to a pair of labels.
+  void TestAndBranch(Register source, Label* true_label, Label* false_label);
+
   void VisitDeclarations(ZoneList<Declaration*>* declarations);
   Handle<JSFunction> BuildBoilerplate(FunctionLiteral* fun);
   void DeclareGlobals(Handle<FixedArray> pairs);
 
   void SetFunctionPosition(FunctionLiteral* fun);
   void SetReturnPosition(FunctionLiteral* fun);
   void SetStatementPosition(Statement* stmt);
   void SetSourcePosition(int pos);
 
   // AST node visit functions.
 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   // Handles the shortcutted logical binary operations in VisitBinaryOperation.
   void EmitLogicalOperation(BinaryOperation* expr);
 
   MacroAssembler* masm_;
   FunctionLiteral* function_;
   Handle<Script> script_;
   bool is_eval_;
 
+  Label* true_label_;
+  Label* false_label_;
+
   DISALLOW_COPY_AND_ASSIGN(FastCodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FAST_CODEGEN_H_