Serialize and resynthesize labels.

pkg/analyzer/test/src/summary/resynthesize_test.dart

 // Copyright (c) 2015, 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 test.src.serialization.elements_test;
 
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 559 matching lines @@
     if (original is! Member) {
       List<FunctionElement> rFunctions = resynthesized.functions;
       List<FunctionElement> oFunctions = original.functions;
       expect(rFunctions, hasLength(oFunctions.length));
       for (int i = 0; i < oFunctions.length; i++) {
         compareFunctionElements(rFunctions[i], oFunctions[i],
             '$desc local function ${oFunctions[i].name}');
       }
     }
     if (original is! Member) {
+      List<LabelElement> rLabels = resynthesized.labels;
+      List<LabelElement> oLabels = original.labels;
+      expect(rLabels, hasLength(oLabels.length));
+      for (int i = 0; i < oLabels.length; i++) {
+        compareLabelElements(
+            rLabels[i], oLabels[i], '$desc label ${oLabels[i].name}');
+      }
+    }
+    if (original is! Member) {
       List<LocalVariableElement> rVariables = resynthesized.localVariables;
       List<LocalVariableElement> oVariables = original.localVariables;
       expect(rVariables, hasLength(oVariables.length));
       for (int i = 0; i < oVariables.length; i++) {
         compareVariableElements(rVariables[i], oVariables[i],
             '$desc local variable ${oVariables[i].name}');
       }
     }
   }
 
@@ skipping 57 matching lines @@
       comparePrefixElements(
           resynthesized.prefix, original.prefix, original.prefix.name);
     }
     expect(resynthesized.combinators.length, original.combinators.length);
     for (int i = 0; i < resynthesized.combinators.length; i++) {
       compareNamespaceCombinators(
           resynthesized.combinators[i], original.combinators[i]);
     }
   }
 
+  void compareLabelElements(
+      LabelElementImpl resynthesized, LabelElementImpl original, String desc) {
+    expect(resynthesized.isOnSwitchMember, original.isOnSwitchMember,
+        reason: desc);
+    expect(resynthesized.isOnSwitchStatement, original.isOnSwitchStatement,
+        reason: desc);
+    compareElements(resynthesized, original, desc);
+  }
+
   void compareMetadata(List<ElementAnnotation> resynthesized,
       List<ElementAnnotation> original, String desc) {
     expect(resynthesized, hasLength(original.length), reason: desc);
     for (int i = 0; i < original.length; i++) {
       compareElementAnnotations(
           resynthesized[i], original[i], '$desc annotation $i');
     }
   }
 
   void compareMethodElements(MethodElementImpl resynthesized,
@@ skipping 2205 matching lines @@
   }
 
   test_localFunctions_inTopLevelGetter() {
     checkLibrary(r'''
 get g {
   f() {}
 }
 ''');
   }
 
+  test_localLabels_inConstructor() {
+    checkLibrary(r'''
+class C {
+  C() {
+    aaa: while (true) {}
+    bbb: switch (42) {
+      ccc: case 0:
+        break;
+    }
+  }
+}
+''');
+  }
+
+  test_localLabels_inMethod() {
+    checkLibrary(r'''
+class C {
+  m() {
+    aaa: while (true) {}
+    bbb: switch (42) {
+      ccc: case 0:
+        break;
+    }
+  }
+}
+''');
+  }
+
+  test_localLabels_inTopLevelFunction() {
+    checkLibrary(r'''
+main() {
+  aaa: while (true) {}
+  bbb: switch (42) {
+    ccc: case 0:
+      break;
+  }
+}
+''');
+  }
+
   test_localVariables_inConstructor() {
     checkLibrary(r'''
 class C {
   C() {
     int v;
     f() {}
   }
 }
 ''');
   }
@@ skipping 807 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }