43 lines
1011 B
C++
43 lines
1011 B
C++
// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_JSON_JSON_COMMON_H_
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#define BASE_JSON_JSON_COMMON_H_
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#include <stddef.h>
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#include "base/logging.h"
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#include "base/macros.h"
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namespace base {
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namespace internal {
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// Chosen to support 99.9% of documents found in the wild late 2016.
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// http://crbug.com/673263
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const size_t kAbsoluteMaxDepth = 200;
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// Simple class that checks for maximum recursion/stack overflow.
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class StackMarker {
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public:
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StackMarker(size_t max_depth, size_t* depth)
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: max_depth_(max_depth), depth_(depth) {
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++(*depth_);
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DCHECK_LE(*depth_, max_depth_);
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}
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~StackMarker() { --(*depth_); }
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bool IsTooDeep() const { return *depth_ >= max_depth_; }
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private:
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const size_t max_depth_;
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size_t* const depth_;
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DISALLOW_COPY_AND_ASSIGN(StackMarker);
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};
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} // namespace internal
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} // namespace base
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#endif // BASE_JSON_JSON_COMMON_H_
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