Complete AST nodes for switch statement.

dart/frog/leg/tree/unparser.dart

 // Copyright (c) 2011, 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.
 
 class Unparser implements Visitor {
   StringBuffer sb;
   final bool printDebugInfo;
 
   Unparser([this.printDebugInfo = false]);
 
@@ skipping 306 matching lines @@
     visit(node.name);
     add(node.colonToken.value);
     sb.add(' ');
     visit(node.expression);
   }
 
   visitSwitchStatement(SwitchStatement node) {
     add(node.switchKeyword.value);
     sb.add(' ');
     visit(node.parenthesizedExpression);
-    sb.add(' { /* NOT IMPLEMENTED YET */ }');
-    // TODO(ahe): More to come...
+    sb.add(' ');
+    visit(node.cases);
+  }
+
+  visitSwitchCase(SwitchCase node) {
+    if (node.label !== null) {
+      visit(node.label);
+      sb.add(': ');
+    }
+    node.caseKeyword.value.printOn(sb);
+    sb.add(' ');
+    visit(node.expression);
+    sb.add(': ');
+    visit(node.statements);
+  }
+
+  visitDefaultCase(DefaultCase node) {
+    if (node.label !== null) {
+      visit(node.label);
+      sb.add(': ');
+    }
+    node.defaultKeyword.value.printOn(sb);
+    sb.add(': ');
+    visit(node.statements);
   }
 
   visitScriptTag(ScriptTag node) {
     add(node.beginToken.value);
     visit(node.tag);
     sb.add('(');
     visit(node.argument);
     if (node.prefixIdentifier !== null) {
       visit(node.prefixIdentifier);
       sb.add(': ');
@@ skipping 32 matching lines @@
       sb.add(' ');
     }
     visit(node.name);
     if (node.typeParameters !== null) {
       visit(node.typeParameters);
     }
     visit(node.formals);
     add(node.endToken.value);
   }
 }