Make continuations last in CPS IR constructors.

tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart

Index: tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart
diff --git a/tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart b/tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart
index aa2c1aca05f45ae2d7e7b86815d6d5bb0fd7c310..2b2d6ec85536b48bfefb58400255b35bb957da06 100644
--- a/tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart
+++ b/tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart
@@ -145,7 +145,6 @@ class SExpressionUnstringifier {
   static const String LITERAL_LIST = "LiteralList";
   static const String LITERAL_MAP = "LiteralMap";
   static const String REIFY_TYPE_VAR = "ReifyTypeVar";
-  static const String THIS = "This";
 
   // Other
   static const String FUNCTION_DEFINITION = "FunctionDefinition";
@@ -190,7 +189,7 @@ class SExpressionUnstringifier {
     } else {
       kind = SelectorKind.CALL;
     }
-    return new Selector(kind, new PublicName(name), 
+    return new Selector(kind, new PublicName(name),
         new CallStructure.unnamed(argumentCount));
   }
 
@@ -356,7 +355,7 @@ class SExpressionUnstringifier {
     assert(cont != null);
 
     tokens.consumeEnd();
-    return new ConcatenateStrings(cont, args);
+    return new ConcatenateStrings(args, cont);
   }
 
   /// (DeclareFunction name = function in body)
@@ -396,7 +395,7 @@ class SExpressionUnstringifier {
 
     tokens.consumeEnd();
     Selector selector = dummySelector(constructorName, args.length);
-    return new InvokeConstructor(type, element, selector, cont, args);
+    return new InvokeConstructor(type, element, selector, args, cont);
   }
 
   /// (InvokeContinuation rec? name (args))
@@ -431,7 +430,7 @@ class SExpressionUnstringifier {
 
     tokens.consumeEnd();
     Selector selector = dummySelector(methodName, args.length);
-    return new InvokeMethod(receiver, selector, cont, args);
+    return new InvokeMethod(receiver, selector, args, cont);
   }
 
   /// (InvokeStatic method (args) cont)
@@ -449,7 +448,7 @@ class SExpressionUnstringifier {
     Selector selector = dummySelector(methodName, args.length);
 
     tokens.consumeEnd();
-    return new InvokeStatic(entity, selector, cont, args, null);
+    return new InvokeStatic(entity, selector, args, cont, null);
   }
 
   /// (InvokeMethodDirectly receiver method (args) cont)
@@ -469,7 +468,7 @@ class SExpressionUnstringifier {
     tokens.consumeEnd();
     Element element = new DummyElement(methodName);
     Selector selector = dummySelector(methodName, args.length);
-    return new InvokeMethodDirectly(receiver, element, selector, cont, args);
+    return new InvokeMethodDirectly(receiver, element, selector, args, cont);
   }
 
   // (rec? name (args) body)
@@ -602,8 +601,6 @@ class SExpressionUnstringifier {
         return parseLiteralMap();
       case REIFY_TYPE_VAR:
         return parseReifyTypeVar();
-      case THIS:
-        return parseThis();
       default:
         assert(false);
     }
@@ -729,11 +726,4 @@ class SExpressionUnstringifier {
     tokens.consumeEnd();
     return new ReifyTypeVar(type);
   }
-
-  /// (This)
-  This parseThis() {
-    tokens.consumeStart(THIS);
-    tokens.consumeEnd();
-    return new This();
-  }
 }