Resynthesize top-level functions from Kernel.

pkg/analyzer/lib/src/dart/element/element.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 analyzer.src.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 1522 matching lines @@
   void set enums(List<ClassElement> enums) {
     _assertNotResynthesized(_unlinkedUnit);
     for (ClassElement enumDeclaration in enums) {
       (enumDeclaration as EnumElementImpl).enclosingElement = this;
     }
     this._enums = enums;
   }
 
   @override
   List<FunctionElement> get functions {
+    if (_kernelContext != null) {
+      _functions ??= _kernelContext.library.procedures
+          .where((k) => k.kind == kernel.ProcedureKind.Method)
+          .map((k) => new FunctionElementImpl.forKernel(this, k))
+          .toList(growable: false);
+    }
     if (_unlinkedUnit != null) {
       _functions ??= _unlinkedUnit.executables
           .where((e) => e.kind == UnlinkedExecutableKind.functionOrMethod)
           .map((e) => new FunctionElementImpl.forSerialized(e, this))
           .toList(growable: false);
     }
     return _functions ?? const <FunctionElement>[];
   }
 
   /**
@@ skipping 2897 matching lines @@
   FunctionElementImpl.forOffset(int nameOffset) : super("", nameOffset);
 
   /**
    * Initialize using the given serialized information.
    */
   FunctionElementImpl.forSerialized(
       UnlinkedExecutable serializedExecutable, ElementImpl enclosingElement)
       : super.forSerialized(serializedExecutable, enclosingElement);
 
   /**
+   * Initialize using the given kernel.
+   */
+  FunctionElementImpl.forKernel(
+      ElementImpl enclosingElement, kernel.Procedure kernel)
+      : super.forKernel(enclosingElement, kernel);
+
+  /**
    * Synthesize an unnamed function element that takes [parameters] and returns
    * [returnType].
    */
   FunctionElementImpl.synthetic(
       List<ParameterElement> parameters, DartType returnType)
       : super("", -1) {
     isSynthetic = true;
     this.returnType = returnType;
     this.parameters = parameters;
 
@@ skipping 4733 matching lines @@
 
   @override
   DartObject computeConstantValue() => null;
 
   @override
   void visitChildren(ElementVisitor visitor) {
     super.visitChildren(visitor);
     _initializer?.accept(visitor);
   }
 }