[kernel] Offsets on loops

pkg/kernel/lib/ast.dart

 // Copyright (c) 2016, 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.
 
 /// -----------------------------------------------------------------------
 ///                           ERROR HANDLING
 /// -----------------------------------------------------------------------
 ///
 /// As a rule of thumb, errors that can be detected statically are handled by
 /// the frontend, typically by translating the erroneous code into a 'throw' or
@@ skipping 3414 matching lines @@
     }
     transformList(updates, v, this);
     if (body != null) {
       body = body.accept(v);
       body?.parent = this;
     }
   }
 }
 
 class ForInStatement extends Statement {
+  /// Offset in the source file it comes from.
+  ///
+  /// Valid values are from 0 and up, or -1 ([TreeNode.noOffset]) if the file offset is

[Johnni Winther, 2017/08/08 11:00:42]

Long line.

+  /// not available (this is the default if none is specifically set).
+  int bodyOffset = TreeNode.noOffset;
+
   VariableDeclaration variable; // Has no initializer.
   Expression iterable;
   Statement body;
   bool isAsync; // True if this is an 'await for' loop.
 
   ForInStatement(this.variable, this.iterable, this.body,
       {this.isAsync: false}) {
     variable?.parent = this;
     iterable?.parent = this;
     body?.parent = this;
@@ skipping 1295 matching lines @@
   if (typedef_.canonicalName == null) {
     throw '$typedef_ has no canonical name';
   }
   return typedef_.canonicalName;
 }
 
 /// Annotation describing information which is not part of Dart semantics; in
 /// other words, if this information (or any information it refers to) changes,
 /// static analysis and runtime behavior of the library are unaffected.
 const informative = null;