CPS implementation of throw and rethrow.

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 220 matching lines @@
   String visitConcatenateStrings(ConcatenateStrings node) {
     String cont = access(node.continuation);
     String args = node.arguments.map(access).join(' ');
     return '$indentation(ConcatenateStrings ($args) $cont)';
   }
 
   String visitInvokeContinuation(InvokeContinuation node) {
     String name = access(node.continuation);
     if (node.isRecursive) name = 'rec $name';
     String args = node.arguments.map(access).join(' ');
-    return '$indentation($InvokeContinuation $name ($args))';
+    return '$indentation(InvokeContinuation $name ($args))';
+  }
+
+  String visitThrow(Throw node) {
+    String value = access(node.value);
+    return '$indentation(Throw $value)';
+  }
+
+  String visitRethrow(Rethrow node) {
+    return '$indentation(Rethrow)';
   }
 
   String visitBranch(Branch node) {
     String condition = visit(node.condition);
     String trueCont = access(node.trueContinuation);
     String falseCont = access(node.falseContinuation);
     return '$indentation(Branch $condition $trueCont $falseCont)';
   }
 
   String visitConstant(Constant node) {
@@ skipping 96 matching lines @@
   }
 
   String visitReifyRuntimeType(ReifyRuntimeType node) {
     return '(ReifyRuntimeType ${access(node.value)})';
   }
 
   String visitReadTypeVariable(ReadTypeVariable node) {
     return '(ReadTypeVariable ${access(node.target)}.${node.variable})';
   }
 
-  @override
   String visitTypeExpression(TypeExpression node) {
     String args = node.arguments.map(access).join(', ');
     return '(TypeExpression ${node.dartType.toString()} $args)';
   }
+
+  String visitNonTailThrow(NonTailThrow node) {
+    String value = access(node.value);
+    return '(NonTailThrow $value)';
+  }
 }
 
 class ConstantStringifier extends ConstantValueVisitor<String, Null> {
   // Some of these methods are unimplemented because we haven't had a need
   // to print such constants.  When printing is implemented, the corresponding
   // parsing support should be added to SExpressionUnstringifier.parseConstant
   // in the dart2js tests (currently in the file
   // tests/compiler/dart2js/backend_dart/sexpr_unstringifier.dart).
 
   String _failWith(ConstantValue constant) {
     throw 'Stringification not supported for ${constant.toStructuredString()}';
   }
 
   String visitFunction(FunctionConstantValue constant, _) {
-    return _failWith(constant);
+    return '(Function "${constant.unparse()}")';
   }
 
   String visitNull(NullConstantValue constant, _) {
     return '(Null)';
   }
 
   String visitInt(IntConstantValue constant, _) {
     return '(Int ${constant.unparse()})';
   }
 
@@ skipping 75 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));
+    if (!_names.containsKey(node)) return 'MISSING_NAME';
     return _names[node];
   }
 }