Start copying resolution/inference data from front end to analyzer ASTs.

pkg/analyzer/lib/src/fasta/resolution_storer.dart

+// Copyright (c) 2017, 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.
+
+import 'package:front_end/src/fasta/type_inference/type_inference_listener.dart';
+import 'package:kernel/ast.dart';
+
+/// Type inference listener that records inferred types and file offsets for
+/// later use by [ValidatingResolutionApplier].
+class InstrumentedResolutionStorer extends ResolutionStorer {
+  final List<int> _typeOffsets;
+
+  InstrumentedResolutionStorer(List<DartType> types, this._typeOffsets)
+      : super(types);
+
+  @override
+  void genericExpressionExit(
+      String expressionType, Expression expression, DartType inferredType) {
+    assert(_types.length == _typeOffsets.length);
+    this._typeOffsets.add(expression.fileOffset);
+    super.genericExpressionExit(expressionType, expression, inferredType);
+  }
+}
+
+/// Type inference listener that records inferred types for later use by
+/// [ResolutionApplier].
+class ResolutionStorer extends TypeInferenceListener {
+  final List<DartType> _types;
+
+  ResolutionStorer(this._types);
+
+  @override
+  bool genericExpressionEnter(
+      String expressionType, Expression expression, DartType typeContext) {
+    super.genericExpressionEnter(expressionType, expression, typeContext);
+    return true;
+  }
+
+  @override
+  void genericExpressionExit(
+      String expressionType, Expression expression, DartType inferredType) {
+    _types.add(inferredType);
+    super.genericExpressionExit(expressionType, expression, inferredType);
+  }
+}