Use ExitDetector.exists(node).

pkg/analyzer/test/generated/all_the_rest_test.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.all_the_rest_test;
 
 import 'dart:collection';
@@ skipping 7324 matching lines @@
 
   void test_whileStatement_true_throw() {
     _assertTrue("{ while (true) { throw ''; } }");
   }
 
   void _assertFalse(String source) {
     _assertHasReturn(false, source);
   }
 
   void _assertHasReturn(bool expectedResult, String source) {
-    ExitDetector detector = new ExitDetector();
     Statement statement = ParserTestCase.parseStatement(source);
-    expect(statement.accept(detector), same(expectedResult));
+    expect(ExitDetector.exits(statement), expectedResult);
   }
 
   void _assertTrue(String source) {
     _assertHasReturn(true, source);
   }
 }
 
 /**
  * Tests for the [ExitDetector] that require that the AST be resolved.
  *
@@ skipping 13 matching lines @@
       x = 'B';
   }
   return x;
 }
 ''');
     LibraryElement element = resolve(source);
     CompilationUnit unit = resolveCompilationUnit(source, element);
     FunctionDeclaration function = unit.declarations.last;
     BlockFunctionBody body = function.functionExpression.body;
     Statement statement = body.block.statements[1];
-    expect(statement.accept(new ExitDetector()), false);
+    expect(ExitDetector.exits(statement), false);
   }
 
   void test_switch_withEnum_false_withDefault() {
     Source source = addSource(r'''
 enum E { A, B }
 String f(E e) {
   var x;
   switch (e) {
     case A:
       x = 'A';
     default:
       x = '?';
   }
   return x;
 }
 ''');
     LibraryElement element = resolve(source);
     CompilationUnit unit = resolveCompilationUnit(source, element);
     FunctionDeclaration function = unit.declarations.last;
     BlockFunctionBody body = function.functionExpression.body;
     Statement statement = body.block.statements[1];
-    expect(statement.accept(new ExitDetector()), false);
+    expect(ExitDetector.exits(statement), false);
   }
 
   void test_switch_withEnum_true_noDefault() {
     Source source = addSource(r'''
 enum E { A, B }
 String f(E e) {
   switch (e) {
     case A:
       return 'A';
     case B:
       return 'B';
   }
 }
 ''');
     LibraryElement element = resolve(source);
     CompilationUnit unit = resolveCompilationUnit(source, element);
     FunctionDeclaration function = unit.declarations.last;
     BlockFunctionBody body = function.functionExpression.body;
     Statement statement = body.block.statements[0];
-    expect(statement.accept(new ExitDetector()), true);
+    expect(ExitDetector.exits(statement), true);
   }
 
   void test_switch_withEnum_true_withDefault() {
     Source source = addSource(r'''
 enum E { A, B }
 String f(E e) {
   switch (e) {
     case A:
       return 'A';
     default:
       return '?';
   }
 }
 ''');
     LibraryElement element = resolve(source);
     CompilationUnit unit = resolveCompilationUnit(source, element);
     FunctionDeclaration function = unit.declarations.last;
     BlockFunctionBody body = function.functionExpression.body;
     Statement statement = body.block.statements[0];
-    expect(statement.accept(new ExitDetector()), true);
+    expect(ExitDetector.exits(statement), true);
   }
 }
 
 
 @reflectiveTest
 class FileBasedSourceTest {
   void test_equals_false_differentFiles() {
     JavaFile file1 = FileUtilities2.createFile("/does/not/exist1.dart");
     JavaFile file2 = FileUtilities2.createFile("/does/not/exist2.dart");
     FileBasedSource source1 = new FileBasedSource.con1(file1);
@@ skipping 1520 matching lines @@
     } else {
       expect(scriptSource, isNotNull, reason: "script $scriptIndex");
       String actualExternalScriptName = scriptSource.shortName;
       expect(
           actualExternalScriptName,
           _expectedExternalScriptName,
           reason: "script $scriptIndex");
     }
   }
 }