Baseline for-of implementation

src/full-codegen.cc

 // Copyright 2012 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 146 matching lines @@
 }
 
 
 void BreakableStatementChecker::VisitForInStatement(ForInStatement* stmt) {
   // Mark for in statements breakable if the enumerable expression is.
   Visit(stmt->enumerable());
 }
 
 
 void BreakableStatementChecker::VisitForOfStatement(ForOfStatement* stmt) {
-  // Mark for in statements breakable if the iterable expression is.
-  Visit(stmt->iterable());
+  // For-of is breakable because of the next() call.
+  is_breakable_ = true;
 }
 
 
 void BreakableStatementChecker::VisitTryCatchStatement(
     TryCatchStatement* stmt) {
   // Mark try catch as breakable to avoid adding a break slot in front of it.
   is_breakable_ = true;
 }
 
 
@@ skipping 1203 matching lines @@
   } else {
     __ jmp(&body);
   }
 
   PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS);
   __ bind(loop_statement.break_label());
   decrement_loop_depth();
 }
 
 
-void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) {
-  // TODO(wingo): Implement.
-}
-
-
 void FullCodeGenerator::VisitTryCatchStatement(TryCatchStatement* stmt) {
   Comment cmnt(masm_, "[ TryCatchStatement");
   SetStatementPosition(stmt);
   // The try block adds a handler to the exception handler chain before
   // entering, and removes it again when exiting normally.  If an exception
   // is thrown during execution of the try block, the handler is consumed
   // and control is passed to the catch block with the exception in the
   // result register.
 
   Label try_entry, handler_entry, exit;
@@ skipping 204 matching lines @@
   }
 
   return false;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal