Introduces the new syntax for deferred loading

sdk/lib/_internal/compiler/implementation/tree/prettyprint.dart

 // Copyright (c) 2012, 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.
 
 part of tree;
 
 /**
  * Pretty-prints Node tree in XML-like format.
  *
  * TODO(smok): Add main() to run from command-line to print out tree for given
@@ skipping 400 matching lines @@
   }
 
   visitMetadata(Metadata node) {
     openNode(node, "Metadata", {
       "token": node.token
     });
     visitChildNode(node.expression, "expression");
     closeNode();
   }
 
+  visitCombinator(Combinator node) {
+    openNode(node, "Combinator", {"isShow" : "${node.isShow}",
+                                  "isHide" : "${node.isHide}"});
+    closeNode();
+  }
+
+  visitExport(Export node) {
+    openNode(node, "Export");
+    visitChildNode(node.uri, "uri");
+    visitChildNode(node.combinators, "combinators");
+    closeNode();
+  }
+
+  visitImport(Import node) {
+    openNode(node, "Import", {
+      "isDeferred" : "${node.isDeferred}"});
+    visitChildNode(node.uri, "uri");
+    visitChildNode(node.combinators, "combinators");
+    if (node.prefix != null) {
+      visitChildNode(node.prefix, "prefix");
+    }
+    closeNode();
+  }
+
+  visitPart(Part node) {
+    openNode(node, "Part");
+    visitChildNode(node.uri, "uri");
+    closeNode();
+  }
+
+  visitPartOf(PartOf node) {
+    openNode(node, "PartOf");
+    visitChildNode(node.name, "name");
+    closeNode();
+  }
+
+  visitLibraryName(LibraryName node) {
+    openNode(node, "LibraryName");
+    visitChildNode(node.name, "name");
+    closeNode();
+  }
+
   visitNode(Node node) {
     unimplemented('visitNode', node: node);
   }
 
-  visitCombinator(Combinator node) {
-    unimplemented('visitNode', node: node);
-  }
-
-  visitExport(Export node) {
-    unimplemented('visitNode', node: node);
-  }
-
-  visitExpression(Expression node) {
-    unimplemented('visitNode', node: node);
-  }
-
-  visitGotoStatement(GotoStatement node) {
-    unimplemented('visitNode', node: node);
-  }
-
-  visitImport(Import node) {
-    unimplemented('visitNode', node: node);
-  }
-
   visitLibraryDependency(Node node) {
     unimplemented('visitNode', node: node);
   }
 
-  visitLibraryName(LibraryName node) {
-    unimplemented('visitNode', node: node);
-  }
-
   visitLibraryTag(LibraryTag node) {
     unimplemented('visitNode', node: node);
   }
 
   visitLiteral(Literal node) {
     unimplemented('visitNode', node: node);
   }
 
   visitLoop(Loop node) {
     unimplemented('visitNode', node: node);
   }
 
-  visitPart(Part node) {
-    unimplemented('visitNode', node: node);
-  }
-
-  visitPartOf(PartOf node) {
-    unimplemented('visitNode', node: node);
-  }
-
   visitPostfix(Postfix node) {
     unimplemented('visitNode', node: node);
   }
 
   visitPrefix(Prefix node) {
     unimplemented('visitNode', node: node);
   }
 
+  visitStringNode(StringNode node) {
+    unimplemented('visitNode', node: node);
+  }
+
   visitStatement(Statement node) {
     unimplemented('visitNode', node: node);
   }
 
-  visitStringNode(StringNode node) {
+  visitExpression(Expression node) {
     unimplemented('visitNode', node: node);
   }
 
+  visitGotoStatement(GotoStatement node) {
+    unimplemented('visitNode', node: node);
+  }
+
   unimplemented(String message, {Node node}) {
     throw message;
   }
 }