Serialize TreeElements

pkg/compiler/lib/src/compiler.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.
 
 library dart2js.compiler_base;
 
 import 'dart:async' show
     EventSink,
     Future;
 
@@ skipping 1985 matching lines @@
   FunctionSignature resolveSignature(FunctionElement function) {
     return compiler.resolver.resolveSignature(function);
   }
 
   @override
   DartType resolveTypeAnnotation(Element element, TypeAnnotation node) {
     return compiler.resolver.resolveTypeAnnotation(element, node);
   }
 
   @override
+  bool hasResolvedAst(Element element) {
+    return element is AstElement &&
+        hasBeenResolved(element) &&
+        element.hasResolvedAst;
+  }
+
+  @override
+  ResolvedAst getResolvedAst(Element element) {
+    if (hasResolvedAst(element)) {
+      AstElement astElement = element;
+      return astElement.resolvedAst;
+    }
+    assert(invariant(element, hasResolvedAst(element),
+        message: "ResolvedAst not available for $element."));
+    return null;
+  }
+
+
+  @override
   bool hasResolutionImpact(Element element) {
     return _resolutionImpactCache.containsKey(element);
   }
 
   @override
   ResolutionImpact getResolutionImpact(Element element) {
     ResolutionImpact resolutionImpact = _resolutionImpactCache[element];
     assert(invariant(element, resolutionImpact != null,
         message: "ResolutionImpact not available for $element."));
     return resolutionImpact;
@@ skipping 148 matching lines @@
   _ElementScanner(this.scanner);
   void scanLibrary(LibraryElement library) => scanner.scanLibrary(library);
   void scanUnit(CompilationUnitElement unit) => scanner.scan(unit);
 }
 
 class _EmptyEnvironment implements Environment {
   const _EmptyEnvironment();
 
   String valueOf(String key) => null;
 }