CPS implementation of throw and rethrow.

pkg/compiler/lib/src/tree_ir/tree_ir_builder.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 tree_ir_builder;
 
 import '../dart2jslib.dart' as dart2js;
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../cps_ir/cps_ir_nodes.dart' as cps_ir;
@@ skipping 435 matching lines @@
         node.selector, arguments);
     return continueWithExpression(node.continuation, invoke);
   }
 
   Statement visitConcatenateStrings(cps_ir.ConcatenateStrings node) {
     List<Expression> arguments = translateArguments(node.arguments);
     Expression concat = new ConcatenateStrings(arguments);
     return continueWithExpression(node.continuation, concat);
   }
 
+  Statement visitThrow(cps_ir.Throw node) {
+    Expression value = getVariableUse(node.value);
+    return new Throw(value);
+  }
+
+  Statement visitRethrow(cps_ir.Rethrow node) {
+    return new Rethrow();
+  }
+
+  Expression visitNonTailThrow(cps_ir.NonTailThrow node) {
+    unexpectedNode(node);
+  }
+
   Statement continueWithExpression(cps_ir.Reference continuation,
                                    Expression expression) {
     cps_ir.Continuation cont = continuation.definition;
     if (cont == returnContinuation) {
       return new Return(expression);
     } else {
       assert(cont.parameters.length == 1);
       Function nextBuilder = cont.hasExactlyOneUse ?
           () => visit(cont.body) : () => new Break(labels[cont]);
       return buildContinuationAssignment(cont.parameters.single, expression,
@@ skipping 175 matching lines @@
   }
 
   @override
   Node visitTypeExpression(cps_ir.TypeExpression node) {
     return new TypeExpression(
         node.dartType,
         node.arguments.map(getVariableUse).toList());
   }
 }