Add top level type inference logic for integer literals.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

Index: pkg/front_end/lib/src/fasta/kernel/body_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
index 3d2a71b5c1afc0b49dded9105f5e5f6fdb967c0c..5e305548e1ef07d03cbdf88166372b3d3c4a8358 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -14,10 +14,10 @@ import '../parser/identifier_context.dart' show IdentifierContext;
 import 'package:front_end/src/fasta/builder/ast_factory.dart' show AstFactory;
 
 import 'package:front_end/src/fasta/kernel/kernel_shadow_ast.dart'
-    show KernelVariableDeclaration;
+    show KernelField, KernelVariableDeclaration;
 
 import 'package:front_end/src/fasta/type_inference/type_inferrer.dart'
-    show TypeInferrer;
+    show FieldNode, TypeInferrer;
 
 import 'package:kernel/ast.dart';
 
@@ -87,11 +87,14 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   @override
   final Uri uri;
 
-  final TypeInferrer<Statement, Expression, KernelVariableDeclaration, Field>
-      _typeInferrer;
+  final TypeInferrer<Statement, Expression, KernelVariableDeclaration,
+      KernelField> _typeInferrer;
 
   final AstFactory astFactory;
 
+  /// If not `null`, dependencies on fields are accumulated into this list.

[karlklose, 2017/04/21 11:11:01]

Maybe add a short comment on when this is `null`.

[Paul Berry, 2017/04/21 11:32:25]

Done.

+  final List<FieldNode<KernelField>> fieldDependencies;
+
   /// Only used when [member] is a constructor. It tracks if an implicit super
   /// initializer is needed.
   ///
@@ -141,7 +144,8 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
       this.isInstanceMember,
       this.uri,
       this._typeInferrer,
-      this.astFactory)
+      this.astFactory,
+      {this.fieldDependencies})
       : enclosingScope = scope,
         library = library,
         isDartLibrary = library.uri.scheme == "dart",
@@ -1070,7 +1074,7 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   }
 
   @override
-  void endFieldInitializer(Token assignmentOperator) {
+  void endFieldInitializer(Token assignmentOperator, Token token) {
     debugEvent("FieldInitializer");
     assert(assignmentOperator.stringValue == "=");
     push(popForValue());
@@ -2613,6 +2617,19 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   void debugEvent(String name) {
     // printEvent(name);
   }
+
+  @override
+  StaticGet makeStaticGet(Member readTarget, int offset) {
+    // TODO(paulberry): only record the dependencies mandated by the top level
+    // type inference spec.
+    if (fieldDependencies != null && readTarget is KernelField) {
+      var fieldNode = _typeInferrer.getFieldNodeForReadTarget(readTarget);
+      if (fieldNode != null) {
+        fieldDependencies.add(fieldNode);
+      }
+    }
+    return astFactory.staticGet(readTarget, offset);
+  }
 }
 
 // TODO(ahe): Shouldn't need to be an expression.