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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "ui/accessibility/ax_tree.h" |
| 6 |
| 7 class EmptyAXTreeDelegate : public ui::AXTreeDelegate { |
| 8 public: |
| 9 EmptyAXTreeDelegate() {} |
| 10 |
| 11 void OnNodeDataWillChange(ui::AXTree* tree, |
| 12 const ui::AXNodeData& old_node_data, |
| 13 const ui::AXNodeData& new_node_data) override {} |
| 14 void OnTreeDataChanged(ui::AXTree* tree) override {} |
| 15 void OnNodeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override {} |
| 16 void OnSubtreeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override {} |
| 17 void OnNodeWillBeReparented(ui::AXTree* tree, ui::AXNode* node) override {} |
| 18 void OnSubtreeWillBeReparented(ui::AXTree* tree, ui::AXNode* node) override {} |
| 19 void OnNodeCreated(ui::AXTree* tree, ui::AXNode* node) override {} |
| 20 void OnNodeReparented(ui::AXTree* tree, ui::AXNode* node) override {} |
| 21 void OnNodeChanged(ui::AXTree* tree, ui::AXNode* node) override {} |
| 22 void OnAtomicUpdateFinished(ui::AXTree* tree, |
| 23 bool root_changed, |
| 24 const std::vector<Change>& changes) override {} |
| 25 }; |
| 26 |
| 27 // Entry point for LibFuzzer. |
| 28 extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data, size_t size) { |
| 29 ui::AXTreeUpdate initial_state; |
| 30 size_t i = 0; |
| 31 while (i < size) { |
| 32 ui::AXNodeData node; |
| 33 node.id = data[i++]; |
| 34 node.state = 0; |
| 35 if (i < size) { |
| 36 size_t child_count = data[i++]; |
| 37 for (size_t j = 0; j < child_count && i < size; j++) |
| 38 node.child_ids.push_back(data[i++]); |
| 39 } |
| 40 initial_state.nodes.push_back(node); |
| 41 } |
| 42 |
| 43 // Run with --v=1 to aid in debugging a specific crash. |
| 44 VLOG(1) << "Input accessibility tree:\n" << initial_state.ToString(); |
| 45 |
| 46 ui::AXTree tree; |
| 47 EmptyAXTreeDelegate delegate; |
| 48 tree.SetDelegate(&delegate); |
| 49 tree.Unserialize(initial_state); |
| 50 |
| 51 return 0; |
| 52 } |
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