Improve parsing of function expressions.

pkg/analyzer/lib/src/summary/fasta/summary_builder.dart

Index: pkg/analyzer/lib/src/summary/fasta/summary_builder.dart
diff --git a/pkg/analyzer/lib/src/summary/fasta/summary_builder.dart b/pkg/analyzer/lib/src/summary/fasta/summary_builder.dart
index 6425913c2dfb326d64cbc880578941205e5a9a29..42339ddc0616a90bcb85ee0efff49322d30f819e 100644
--- a/pkg/analyzer/lib/src/summary/fasta/summary_builder.dart
+++ b/pkg/analyzer/lib/src/summary/fasta/summary_builder.dart
@@ -218,8 +218,9 @@ abstract class ExpressionListener extends StackListener {
     push(new StringLiteral(token.lexeme));
   }
 
-  void beginUnnamedFunction(token) {
-    debugEvent("BeginUnnamedFunction");
+  @override
+  void beginFunctionExpression(token) {
+    debugEvent("beginFunctionExpression");
     var check = pop();
     assert(check == _invariantCheckToken);
     _withinFunction++;
@@ -285,7 +286,7 @@ abstract class ExpressionListener extends StackListener {
     assert(ignore);
   }
 
-  void endFunctionDeclaration(token) {
+  void endFunctionDeclaration(Token endToken) {
     debugEvent("FunctionDeclaration");
     _withinFunction--;
     if (ignore) return;
@@ -370,8 +371,8 @@ abstract class ExpressionListener extends StackListener {
     assert(ignore);
   }
 
-  void endUnnamedFunction(Token beginToken, Token token) {
-    debugEvent("UnnamedFunction");
+  void endFunctionExpression(Token beginToken, Token token) {

[danrubel, 2017/07/06 15:43:34]

@override ?

[ahe, 2017/07/06 19:54:18]

Done.

+    debugEvent("FunctionExpression");
     _withinFunction--;
     if (ignore) return;
     _endFunction();