[es6] Implement for-of iterator finalization

src/ast/prettyprinter.cc

Index: src/ast/prettyprinter.cc
diff --git a/src/ast/prettyprinter.cc b/src/ast/prettyprinter.cc
index 3f624be864878428e16e6d30314e2091848b7bd0..9cc841601d9f9fed9824dc3d4d983e84b2bb8533 100644
--- a/src/ast/prettyprinter.cc
+++ b/src/ast/prettyprinter.cc
@@ -1203,6 +1203,14 @@ const char* AstPrinter::PrintProgram(FunctionLiteral* program) {
 }
 
 
+void AstPrinter::PrintOut(Isolate* isolate, AstNode* node) {
+  AstPrinter printer(isolate);
+  printer.Init();
+  printer.Visit(node);
+  PrintF("%s", printer.Output());
+}
+
+
 void AstPrinter::PrintDeclarations(ZoneList<Declaration*>* declarations) {
   if (declarations->length() > 0) {
     IndentedScope indent(this, "DECLS");
@@ -1390,6 +1398,10 @@ void AstPrinter::VisitForOfStatement(ForOfStatement* node) {
   PrintIndentedVisit("FOR", node->each());
   PrintIndentedVisit("OF", node->iterable());
   PrintIndentedVisit("BODY", node->body());
+  PrintIndentedVisit("INIT", node->assign_iterator());
+  PrintIndentedVisit("NEXT", node->next_result());
+  PrintIndentedVisit("EACH", node->assign_each());
+  PrintIndentedVisit("DONE", node->result_done());
 }
 
 
@@ -1542,31 +1554,36 @@ void AstPrinter::VisitArrayLiteral(ArrayLiteral* node) {
 
 
 void AstPrinter::VisitVariableProxy(VariableProxy* node) {
-  Variable* var = node->var();
   EmbeddedVector<char, 128> buf;
   int pos =
       FormatSlotNode(&buf, node, "VAR PROXY", node->VariableFeedbackSlot());
 
-  switch (var->location()) {
-    case VariableLocation::UNALLOCATED:
-      break;
-    case VariableLocation::PARAMETER:
-      SNPrintF(buf + pos, " parameter[%d]", var->index());
-      break;
-    case VariableLocation::LOCAL:
-      SNPrintF(buf + pos, " local[%d]", var->index());
-      break;
-    case VariableLocation::CONTEXT:
-      SNPrintF(buf + pos, " context[%d]", var->index());
-      break;
-    case VariableLocation::GLOBAL:
-      SNPrintF(buf + pos, " global[%d]", var->index());
-      break;
-    case VariableLocation::LOOKUP:
-      SNPrintF(buf + pos, " lookup");
-      break;
+  if (!node->is_resolved()) {
+    SNPrintF(buf + pos, " unresolved");
+    PrintLiteralWithModeIndented(buf.start(), nullptr, node->name());
+  } else {
+    Variable* var = node->var();
+    switch (var->location()) {
+      case VariableLocation::UNALLOCATED:
+        break;
+      case VariableLocation::PARAMETER:
+        SNPrintF(buf + pos, " parameter[%d]", var->index());
+        break;
+      case VariableLocation::LOCAL:
+        SNPrintF(buf + pos, " local[%d]", var->index());
+        break;
+      case VariableLocation::CONTEXT:
+        SNPrintF(buf + pos, " context[%d]", var->index());
+        break;
+      case VariableLocation::GLOBAL:
+        SNPrintF(buf + pos, " global[%d]", var->index());
+        break;
+      case VariableLocation::LOOKUP:
+        SNPrintF(buf + pos, " lookup");
+        break;
+    }
+    PrintLiteralWithModeIndented(buf.start(), var, node->name());
   }
-  PrintLiteralWithModeIndented(buf.start(), var, node->name());
 }