Improved pretty printing of VAR PROXY and some control flow AST nodes.

src/prettyprinter.cc

 // Copyright 2011 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 615 matching lines @@
     int pos = OS::SNPrintF(buf, "%s (mode = %s", info,
                            Variable::Mode2String(var->mode()));
     OS::SNPrintF(buf + pos, ")");
     PrintLiteralIndented(buf.start(), value, true);
   }
 }
 
 
 void AstPrinter::PrintLabelsIndented(const char* info, ZoneStringList* labels) {
   if (labels != NULL && labels->length() > 0) {
-    if (info == NULL) {
-      PrintIndented("LABELS ");
-    } else {
-      PrintIndented(info);
-      Print(" ");
-    }
+    PrintIndented(info == NULL ? "LABELS" : info);
+    Print(" ");
     PrintLabels(labels);
+    Print("\n");
   } else if (info != NULL) {
     PrintIndented(info);
+    Print("\n");
   }
-  Print("\n");
 }
 
 
 void AstPrinter::PrintIndentedVisit(const char* s, AstNode* node) {
   IndentedScope indent(this, s, node);
   Visit(node);
 }
 
 
 const char* AstPrinter::PrintProgram(FunctionLiteral* program) {
@@ skipping 265 matching lines @@
     IndentedScope indent(this, "VALUES");
     for (int i = 0; i < node->values()->length(); i++) {
       Visit(node->values()->at(i));
     }
   }
 }
 
 
 void AstPrinter::VisitVariableProxy(VariableProxy* node) {
   Variable* var = node->var();
-  PrintLiteralWithModeIndented("VAR PROXY", var, node->name());
-  { IndentedScope indent(this);
-    switch (var->location()) {
-      case Variable::UNALLOCATED:
-        break;
-      case Variable::PARAMETER:
-        Print("parameter[%d]", var->index());
-        break;
-      case Variable::LOCAL:
-        Print("local[%d]", var->index());
-        break;
-      case Variable::CONTEXT:
-        Print("context[%d]", var->index());
-        break;
-      case Variable::LOOKUP:
-        Print("lookup");
-        break;
-    }
+  EmbeddedVector<char, 128> buf;
+  int pos = OS::SNPrintF(buf, "VAR PROXY");
+  switch (var->location()) {
+    case Variable::UNALLOCATED:
+      break;
+    case Variable::PARAMETER:
+      OS::SNPrintF(buf + pos, " parameter[%d]", var->index());
+      break;
+    case Variable::LOCAL:
+      OS::SNPrintF(buf + pos, " local[%d]", var->index());
+      break;
+    case Variable::CONTEXT:
+      OS::SNPrintF(buf + pos, " context[%d]", var->index());
+      break;
+    case Variable::LOOKUP:
+      OS::SNPrintF(buf + pos, " lookup");
+      break;
   }
+  PrintLiteralWithModeIndented(buf.start(), var, node->name());
 }
 
 
 void AstPrinter::VisitAssignment(Assignment* node) {
   IndentedScope indent(this, Token::Name(node->op()), node);
   Visit(node->target());
   Visit(node->value());
 }
 
 
@@ skipping 468 matching lines @@
     AddAttribute("mode", Variable::Mode2String(decl->mode()));
   }
   Visit(decl->proxy());
   if (decl->fun() != NULL) Visit(decl->fun());
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal