v8/test/message/var-conflict-in-with.js

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

{ { with ({}) var x; } let x; }
[ast] Save one pointer in most Function and Variable declaration node Currently, Declaration stores a Scope pointer to whichever Scope the declaration appeared in. This is used to disallow var declarations being hoisted over lexical declarations. For example: { let x; { var x; } } But in fact this is the only sort of case where storing the scope is required: for lexical declarations (including function declarations appearing in blocks), Declaration::scope() was always identical to Declaration::proxy()->var()->scope(). That is, only var declarations end up "nested" in this way. This patch adds a subclass of VariableDeclaration to store the Scope. Since the only thing that cares about that data is Scope analysis, this isn't treated as a distinct AstNode::NodeType from VariableDeclaration, leaving all AstVisitors untouched in the process. Also reworked the logic in Scope::CheckConflictingVarDeclarations() for clarity after making changes to accomodate the new code. Change-Id: I6ee4298700508ab9e28a76ddb8504bae68bc473f Reviewed-on: https://chromium-review.googlesource.com/619595 Commit-Queue: Adam Klein <adamk@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#47441} 2017-08-18 17:26:54 +00:00			`// Copyright 2015 the V8 project authors. All rights reserved.`
			`// Use of this source code is governed by a BSD-style license that can be`
			`// found in the LICENSE file.`

			`{ { with ({}) var x; } let x; }`