Use an explicit 'this' parameter instead of 'This' nodes.

pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.ir_nodes_sexpr;
 
 import '../constants/values.dart';
 import '../util/util.dart';
 import 'cps_ir_nodes.dart';
 
@@ skipping 28 matching lines @@
     return namer.nameMutableVariable(node);
   }
 
   /// Main entry point for creating a [String] from a [Node].  All recursive
   /// calls must go through this method.
   String visit(Node node) {
     String s = node.accept(this);
     return decorator(node, s);
   }
 
+  String visitThisParameter(Parameter thisParameter) {
+    return thisParameter == null ? '' : visit(thisParameter) + ' ';
+  }

[asgerf, 2015/03/18 13:28:25]

I think we try to avoid `visitXXX` names for methods that don't actually
override a visitor method.

[sra1, 2015/03/19 10:42:51]

Done.

   String visitFunctionDefinition(FunctionDefinition node) {
     String name = node.element.name;
+    String thisName = visitThisParameter(node.thisParameter);
     String parameters = node.parameters.map(visit).join(' ');
     String body = visit(node.body);
-    return '$indentation(FunctionDefinition $name ($parameters) return\n'
+    return '$indentation(FunctionDefinition $name $thisName($parameters) return\n'

[asgerf, 2015/03/18 13:28:25]

Long line

[sra1, 2015/03/19 10:42:51]

Done.

         '$body)';
   }
 
   String visitFieldDefinition(FieldDefinition node) {
     String name = node.element.name;
     if (node.hasInitializer) {
       String body = visit(node.body);
       return '$indentation(FieldDefinition $name () return\n'
              '$body)';
     } else {
       return '$indentation(FieldDefinition $name)';
     }
   }
 
   String visitConstructorDefinition(ConstructorDefinition node) {
     String name = node.element.name;
     if (name != '') name = '$name ';
+    String thisName = visitThisParameter(node.thisParameter);
     String parameters = node.parameters.map(visit).join(' ');
     if (node.body != null) {
       String initializers = indentBlock(() {
         return indentBlock(() {
           if (node.initializers.isEmpty) {
             return '$indentation';
           } else {
             return node.initializers.map(visit).join('\n');
           }
         });
       });
       String body = visit(node.body);
-      return '$indentation(ConstructorDefinition $name($parameters) return'
+      return '$indentation(ConstructorDefinition $name$thisName($parameters) return'

[asgerf, 2015/03/18 13:28:25]

Long line

[sra1, 2015/03/19 10:42:51]

Done.

           ' (\n$initializers)\n$body)';
     } else {
-      return '$indentation(ConstructorDefinition $name($parameters) return)';
+      return '$indentation(ConstructorDefinition $name$thisName($parameters) return)';
     }
   }
 
   String visitFieldInitializer(FieldInitializer node) {
     String name = node.element.name;
     String body = visit(node.body);
     return '$indentation(FieldInitializer $name\$body)';
   }
 
   String visitSuperInitializer(SuperInitializer node) {
@@ skipping 339 matching lines @@
     assert(!_names.containsKey(node));
     return _names[node] = 'v${_valueCounter++}';
   }
 
   void setReturnContinuation(Continuation node) {
     assert(!_names.containsKey(node) || _names[node] == 'return');
     _names[node] = 'return';
   }
 
   String getName(Node node) {
-    assert(_names.containsKey(node));
-    return _names[node];
+    //assert(_names.containsKey(node));
+    //return _names[node];
+    if (_names.containsKey(node)) return _names[node];
+    return '<<${node}>>';

[asgerf, 2015/03/18 13:28:25]

It's not clear if this is leftover debugging code or intentional. In any case,
there shouldn't be outcommented code.

[sra1, 2015/03/19 10:42:51]

I have reverted this change, and added a TODO to make the printer produce
something for malformed terms to assist in the debugging of malformed terms.

   }
 }