Issue 8742. Preserve leading line comments during java2dart translation.

pkg/analyzer/test/generated/ast_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.ast_test;
 
 import 'package:analyzer/src/generated/java_core.dart';
@@ skipping 73 matching lines @@
         final __test = new NodeLocatorTest();
         runJUnitTest(__test, __test.test_searchWithin_offsetBeforeNode);
       });
     });
   }
 }
 
 class IndexExpressionTest extends EngineTestCase {
   void test_inGetterContext_assignment_compound_left() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // a[i] += ?
     ASTFactory.assignmentExpression(expression, TokenType.PLUS_EQ, null);
     JUnitTestCase.assertTrue(expression.inGetterContext());
   }
 
   void test_inGetterContext_assignment_simple_left() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // a[i] = ?
     ASTFactory.assignmentExpression(expression, TokenType.EQ, null);
     JUnitTestCase.assertFalse(expression.inGetterContext());
   }
 
   void test_inGetterContext_nonAssignment() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // a[i] + ?
     ASTFactory.binaryExpression(expression, TokenType.PLUS, null);
     JUnitTestCase.assertTrue(expression.inGetterContext());
   }
 
   void test_inSetterContext_assignment_compound_left() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // a[i] += ?
     ASTFactory.assignmentExpression(expression, TokenType.PLUS_EQ, null);
     JUnitTestCase.assertTrue(expression.inSetterContext());
   }
 
   void test_inSetterContext_assignment_compound_right() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // ? += a[i]
     ASTFactory.assignmentExpression(null, TokenType.PLUS_EQ, expression);
     JUnitTestCase.assertFalse(expression.inSetterContext());
   }
 
   void test_inSetterContext_assignment_simple_left() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // a[i] = ?
     ASTFactory.assignmentExpression(expression, TokenType.EQ, null);
     JUnitTestCase.assertTrue(expression.inSetterContext());
   }
 
   void test_inSetterContext_assignment_simple_right() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // ? = a[i]
     ASTFactory.assignmentExpression(null, TokenType.EQ, expression);
     JUnitTestCase.assertFalse(expression.inSetterContext());
   }
 
   void test_inSetterContext_nonAssignment() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
     ASTFactory.binaryExpression(expression, TokenType.PLUS, null);
+    // a[i] + ?
     JUnitTestCase.assertFalse(expression.inSetterContext());
   }
 
   void test_inSetterContext_postfix() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
     ASTFactory.postfixExpression(expression, TokenType.PLUS_PLUS);
+    // a[i]++
     JUnitTestCase.assertTrue(expression.inSetterContext());
   }
 
   void test_inSetterContext_prefix_bang() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // !a[i]
     ASTFactory.prefixExpression(TokenType.BANG, expression);
     JUnitTestCase.assertFalse(expression.inSetterContext());
   }
 
   void test_inSetterContext_prefix_minusMinus() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // --a[i]
     ASTFactory.prefixExpression(TokenType.MINUS_MINUS, expression);
     JUnitTestCase.assertTrue(expression.inSetterContext());
   }
 
   void test_inSetterContext_prefix_plusPlus() {
     IndexExpression expression = ASTFactory.indexExpression(ASTFactory.identifier3("a"), ASTFactory.identifier3("b"));
+    // ++a[i]
     ASTFactory.prefixExpression(TokenType.PLUS_PLUS, expression);
     JUnitTestCase.assertTrue(expression.inSetterContext());
   }
 
   static dartSuite() {
     _ut.group('IndexExpressionTest', () {
       _ut.test('test_inGetterContext_assignment_compound_left', () {
         final __test = new IndexExpressionTest();
         runJUnitTest(__test, __test.test_inGetterContext_assignment_compound_left);
       });
@@ skipping 3905 matching lines @@
   NodeLocatorTest.dartSuite();
   ToSourceVisitorTest.dartSuite();
   BreadthFirstVisitorTest.dartSuite();
   ClassDeclarationTest.dartSuite();
   IndexExpressionTest.dartSuite();
   NodeListTest.dartSuite();
   SimpleIdentifierTest.dartSuite();
   SimpleStringLiteralTest.dartSuite();
   VariableDeclarationTest.dartSuite();
 }