19907815758

Committed 03 Dec 2025 08:27PM UTC coverage: 97.319%. Remained the same

Build # 19907815758

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github

Committed by

sanex3339

Commit Message

Adjust precommit hook

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98.35

/src/node-transformers/control-flow-transformers/FunctionControlFlowTransformer.ts

import { inject, injectable } from 'inversify';
import { ServiceIdentifiers } from '../../container/ServiceIdentifiers';

import * as estraverse from '@javascript-obfuscator/estraverse';
import * as ESTree from 'estree';

import { TControlFlowCustomNodeFactory } from '../../types/container/custom-nodes/TControlFlowCustomNodeFactory';
import { TControlFlowReplacerFactory } from '../../types/container/node-transformers/TControlFlowReplacerFactory';
import { TControlFlowStorageFactory } from '../../types/container/node-transformers/TControlFlowStorageFactory';
import { TControlFlowStorageFactoryCreator } from '../../types/container/node-transformers/TControlFlowStorageFactoryCreator';
import { TInitialData } from '../../types/TInitialData';
import { TNodeWithStatements } from '../../types/node/TNodeWithStatements';

import { IControlFlowStorage } from '../../interfaces/storages/control-flow-transformers/IControlFlowStorage';
import { ICustomNode } from '../../interfaces/custom-nodes/ICustomNode';
import { IOptions } from '../../interfaces/options/IOptions';
import { IRandomGenerator } from '../../interfaces/utils/IRandomGenerator';
import { IVisitor } from '../../interfaces/node-transformers/IVisitor';

import { ControlFlowCustomNode } from '../../enums/custom-nodes/ControlFlowCustomNode';
import { ControlFlowReplacer } from '../../enums/node-transformers/control-flow-transformers/control-flow-replacers/ControlFlowReplacer';
import { ControlFlowStorage } from '../../enums/storages/ControlFlowStorage';
import { NodeType } from '../../enums/node/NodeType';
import { NodeTransformationStage } from '../../enums/node-transformers/NodeTransformationStage';

import { AbstractNodeTransformer } from '../AbstractNodeTransformer';
import { ControlFlowStorageNode } from '../../custom-nodes/control-flow-flattening-nodes/control-flow-storage-nodes/ControlFlowStorageNode';
import { NodeAppender } from '../../node/NodeAppender';
import { NodeGuards } from '../../node/NodeGuards';
import { NodeMetadata } from '../../node/NodeMetadata';
import { NodeStatementUtils } from '../../node/NodeStatementUtils';
import { NodeUtils } from '../../node/NodeUtils';

@injectable()
export class FunctionControlFlowTransformer extends AbstractNodeTransformer {
    /**
     * @type {number}
     */
    private static readonly hostNodeSearchMinDepth: number = 0;

    /**
     * @type {number}
     */
    private static readonly hostNodeSearchMaxDepth: number = 2;

    /**
     * @type {Map <string, ControlFlowReplacer>}
     */
    protected readonly controlFlowReplacersMap: Map<string, ControlFlowReplacer> = new Map([
        [NodeType.BinaryExpression, ControlFlowReplacer.BinaryExpressionControlFlowReplacer],
        [NodeType.CallExpression, ControlFlowReplacer.CallExpressionControlFlowReplacer],
        [NodeType.LogicalExpression, ControlFlowReplacer.LogicalExpressionControlFlowReplacer],
        [NodeType.Literal, ControlFlowReplacer.StringLiteralControlFlowReplacer]
    ]);

    /**
     * @type {WeakMap<TNodeWithStatements, IControlFlowStorage>}
     */
    protected readonly controlFlowData: WeakMap<TNodeWithStatements, IControlFlowStorage> = new WeakMap();

    /**
     * @type {WeakMap<TNodeWithStatements, VariableDeclaration>}
     */
    protected readonly hostNodesWithControlFlowNode: WeakMap<TNodeWithStatements, ESTree.VariableDeclaration> =
        new WeakMap();

    /**
     * @type {TControlFlowReplacerFactory}
     */
    protected readonly controlFlowReplacerFactory: TControlFlowReplacerFactory;

    /**
     * @type {TControlFlowStorageFactory}
     */
    protected controlFlowStorageFactory: TControlFlowStorageFactory;

    /**
     * @type {TControlFlowCustomNodeFactory}
     */
    protected readonly controlFlowCustomNodeFactory: TControlFlowCustomNodeFactory;

    /**
     * @type {WeakSet<ESTree.Function>}
     */
    protected readonly visitedFunctionNodes: WeakSet<ESTree.Function> = new WeakSet();

    /**
     * @param {TControlFlowStorageFactoryCreator} controlFlowStorageFactoryCreator
     * @param {TControlFlowReplacerFactory} controlFlowReplacerFactory
     * @param {TControlFlowCustomNodeFactory} controlFlowCustomNodeFactory
     * @param {IRandomGenerator} randomGenerator
     * @param {IOptions} options
     */
    public constructor(
        @inject(ServiceIdentifiers.Factory__TControlFlowStorage)
        controlFlowStorageFactoryCreator: TControlFlowStorageFactoryCreator,
        @inject(ServiceIdentifiers.Factory__IControlFlowReplacer)
        controlFlowReplacerFactory: TControlFlowReplacerFactory,
        @inject(ServiceIdentifiers.Factory__IControlFlowCustomNode)
        controlFlowCustomNodeFactory: TControlFlowCustomNodeFactory,
        @inject(ServiceIdentifiers.IRandomGenerator) randomGenerator: IRandomGenerator,
        @inject(ServiceIdentifiers.IOptions) options: IOptions
    ) {
        super(randomGenerator, options);

        this.controlFlowStorageFactory = controlFlowStorageFactoryCreator(
            ControlFlowStorage.FunctionControlFlowStorage
        );
        this.controlFlowReplacerFactory = controlFlowReplacerFactory;
        this.controlFlowCustomNodeFactory = controlFlowCustomNodeFactory;
    }

    /**
     * @param {NodeTransformationStage} nodeTransformationStage
     * @returns {IVisitor | null}
     */
    public getVisitor(nodeTransformationStage: NodeTransformationStage): IVisitor | null {
        if (!this.options.controlFlowFlattening) {
            return null;
        }

        switch (nodeTransformationStage) {
            case NodeTransformationStage.ControlFlowFlattening:
                return {
                    leave: (
                        node: ESTree.Node,
                        parentNode: ESTree.Node | null
                    ): ESTree.Node | estraverse.VisitorOption | void => {
                        if (parentNode && NodeGuards.isFunctionNode(node)) {
                            return this.transformNode(node, parentNode);
                        }
                    }
                };

            default:
                return null;
        }
    }

    /**
     * @param {Function} functionNode
     * @param {Node} parentNode
     * @returns {Function}
     */
    public transformNode(functionNode: ESTree.Function, parentNode: ESTree.Node): ESTree.Function {
        this.visitedFunctionNodes.add(functionNode);

        if (!NodeGuards.isBlockStatementNode(functionNode.body)) {
            return functionNode;
        }

        const hostNode: TNodeWithStatements = this.getHostNode(functionNode.body);
        const controlFlowStorage: IControlFlowStorage = this.getControlFlowStorage(hostNode);

        this.transformFunctionBody(functionNode, controlFlowStorage);

        if (!controlFlowStorage.getLength()) {
            return functionNode;
        }

        const controlFlowStorageNode: ESTree.VariableDeclaration = this.getControlFlowStorageNode(controlFlowStorage);

        this.appendControlFlowStorageNode(hostNode, controlFlowStorageNode);

        return functionNode;
    }

    /**
     * @param {BlockStatement} functionNode
     * @param {IControlFlowStorage} controlFlowStorage
     */
    protected transformFunctionBody(functionNode: ESTree.Function, controlFlowStorage: IControlFlowStorage): void {
        estraverse.replace(functionNode.body, {
            enter: (node: ESTree.Node, parentNode: ESTree.Node | null): estraverse.VisitorOption | ESTree.Node =>
                this.transformFunctionBodyNode(node, parentNode, functionNode, controlFlowStorage)
        });
    }

    /**
     * @param {Node} node
     * @param {Node | null} parentNode
     * @param {Function} functionNode
     * @param {IControlFlowStorage} controlFlowStorage
     * @returns {ESTraverse.VisitorOption | Node}
     */
    protected transformFunctionBodyNode(
        node: ESTree.Node,
        parentNode: ESTree.Node | null,
        functionNode: ESTree.Function,
        controlFlowStorage: IControlFlowStorage
    ): estraverse.VisitorOption | ESTree.Node {
        const shouldSkipTraverse = !parentNode || NodeMetadata.isIgnoredNode(node) || this.isVisitedFunctionNode(node);

        if (shouldSkipTraverse) {
            return estraverse.VisitorOption.Skip;
        }

        const controlFlowReplacerName: ControlFlowReplacer | null = this.controlFlowReplacersMap.get(node.type) ?? null;

        if (!controlFlowReplacerName) {
            return node;
        }

        if (!this.isAllowedTransformationByThreshold()) {
            return node;
        }

        const replacedNode: ESTree.Node = this.controlFlowReplacerFactory(controlFlowReplacerName).replace(
            node,
            parentNode,
            controlFlowStorage
        );

        NodeUtils.parentizeNode(replacedNode, parentNode);

        return replacedNode;
    }

    /**
     * @param {BlockStatement} functionNodeBody
     * @returns {TNodeWithStatements}
     */
    protected getHostNode(functionNodeBody: ESTree.BlockStatement): TNodeWithStatements {
        const blockScopesOfNode: TNodeWithStatements[] =
            NodeStatementUtils.getParentNodesWithStatements(functionNodeBody);

        if (blockScopesOfNode.length === 1) {
            return functionNodeBody;
        } else {
            blockScopesOfNode.pop();
        }

        if (blockScopesOfNode.length > FunctionControlFlowTransformer.hostNodeSearchMinDepth) {
            blockScopesOfNode.splice(0, FunctionControlFlowTransformer.hostNodeSearchMinDepth);
        }

        if (blockScopesOfNode.length > FunctionControlFlowTransformer.hostNodeSearchMaxDepth) {
            blockScopesOfNode.length = FunctionControlFlowTransformer.hostNodeSearchMaxDepth;
        }

        return this.randomGenerator.getRandomGenerator().pickone(blockScopesOfNode);
    }

    /**
     * @param {TNodeWithStatements} hostNode
     * @returns {TControlFlowStorage}
     */
    protected getControlFlowStorage(hostNode: TNodeWithStatements): IControlFlowStorage {
        let controlFlowStorage: IControlFlowStorage;

        const hostControlFlowStorage: IControlFlowStorage | null = this.controlFlowData.get(hostNode) ?? null;

        if (!hostControlFlowStorage) {
            controlFlowStorage = this.controlFlowStorageFactory();
        } else {
            const existingControlFlowStorageNode: ESTree.VariableDeclaration | null =
                this.hostNodesWithControlFlowNode.get(hostNode) ?? null;

            if (existingControlFlowStorageNode) {
                NodeAppender.remove(hostNode, existingControlFlowStorageNode);
            }

            controlFlowStorage = hostControlFlowStorage;
        }

        this.controlFlowData.set(hostNode, controlFlowStorage);

        return controlFlowStorage;
    }

    /**
     * @param {IControlFlowStorage} controlFlowStorage
     * @returns {VariableDeclaration}
     */
    protected getControlFlowStorageNode(controlFlowStorage: IControlFlowStorage): ESTree.VariableDeclaration {
        const controlFlowStorageCustomNode: ICustomNode<TInitialData<ControlFlowStorageNode>> =
            this.controlFlowCustomNodeFactory(ControlFlowCustomNode.ControlFlowStorageNode);

        controlFlowStorageCustomNode.initialize(controlFlowStorage);

        const controlFlowStorageNode: ESTree.Node = controlFlowStorageCustomNode.getNode()[0];

        if (!NodeGuards.isVariableDeclarationNode(controlFlowStorageNode)) {
            throw new Error(
                '`controlFlowStorageNode` should contain `VariableDeclaration` node with control flow storage object'
            );
        }

        return controlFlowStorageNode;
    }

    /**
     * @param {TNodeWithStatements} hostNode
     * @param {VariableDeclaration} controlFlowStorageNode
     */
    protected appendControlFlowStorageNode(
        hostNode: TNodeWithStatements,
        controlFlowStorageNode: ESTree.VariableDeclaration
    ): void {
        NodeUtils.parentizeAst(controlFlowStorageNode);
        NodeAppender.prepend(hostNode, [controlFlowStorageNode]);

        this.hostNodesWithControlFlowNode.set(hostNode, controlFlowStorageNode);
    }

    /**
     * @param {NodeGuards} node
     * @returns {boolean}
     */
    protected isVisitedFunctionNode(node: ESTree.Node): boolean {
        return NodeGuards.isFunctionNode(node) && this.visitedFunctionNodes.has(node);
    }

    /**
     * @returns {boolean}
     */
    protected isAllowedTransformationByThreshold(): boolean {
        return this.randomGenerator.getMathRandom() <= this.options.controlFlowFlatteningThreshold;
    }
}

1	import { inject, injectable } from 'inversify';	6✔
2	import { ServiceIdentifiers } from '../../container/ServiceIdentifiers';	6✔
3
4	import * as estraverse from '@javascript-obfuscator/estraverse';	6✔
5	import * as ESTree from 'estree';
6
7	import { TControlFlowCustomNodeFactory } from '../../types/container/custom-nodes/TControlFlowCustomNodeFactory';
8	import { TControlFlowReplacerFactory } from '../../types/container/node-transformers/TControlFlowReplacerFactory';
9	import { TControlFlowStorageFactory } from '../../types/container/node-transformers/TControlFlowStorageFactory';
10	import { TControlFlowStorageFactoryCreator } from '../../types/container/node-transformers/TControlFlowStorageFactoryCreator';
11	import { TInitialData } from '../../types/TInitialData';
12	import { TNodeWithStatements } from '../../types/node/TNodeWithStatements';
13
14	import { IControlFlowStorage } from '../../interfaces/storages/control-flow-transformers/IControlFlowStorage';
15	import { ICustomNode } from '../../interfaces/custom-nodes/ICustomNode';
16	import { IOptions } from '../../interfaces/options/IOptions';
17	import { IRandomGenerator } from '../../interfaces/utils/IRandomGenerator';
18	import { IVisitor } from '../../interfaces/node-transformers/IVisitor';
19
20	import { ControlFlowCustomNode } from '../../enums/custom-nodes/ControlFlowCustomNode';	6✔
21	import { ControlFlowReplacer } from '../../enums/node-transformers/control-flow-transformers/control-flow-replacers/ControlFlowReplacer';	6✔
22	import { ControlFlowStorage } from '../../enums/storages/ControlFlowStorage';	6✔
23	import { NodeType } from '../../enums/node/NodeType';	6✔
24	import { NodeTransformationStage } from '../../enums/node-transformers/NodeTransformationStage';	6✔
25
26	import { AbstractNodeTransformer } from '../AbstractNodeTransformer';	6✔
27	import { ControlFlowStorageNode } from '../../custom-nodes/control-flow-flattening-nodes/control-flow-storage-nodes/ControlFlowStorageNode';
28	import { NodeAppender } from '../../node/NodeAppender';	6✔
29	import { NodeGuards } from '../../node/NodeGuards';	6✔
30	import { NodeMetadata } from '../../node/NodeMetadata';	6✔
31	import { NodeStatementUtils } from '../../node/NodeStatementUtils';	6✔
32	import { NodeUtils } from '../../node/NodeUtils';	6✔
33
34	@injectable()
35	export class FunctionControlFlowTransformer extends AbstractNodeTransformer {	6✔
36	/**
37	* @type {number}
38	*/
39	private static readonly hostNodeSearchMinDepth: number = 0;	6✔
40
41	/**
42	* @type {number}
43	*/
44	private static readonly hostNodeSearchMaxDepth: number = 2;	6✔
45
46	/**
47	* @type {Map <string, ControlFlowReplacer>}
48	*/
49	protected readonly controlFlowReplacersMap: Map<string, ControlFlowReplacer> = new Map([	395,616✔
50	[NodeType.BinaryExpression, ControlFlowReplacer.BinaryExpressionControlFlowReplacer],
51	[NodeType.CallExpression, ControlFlowReplacer.CallExpressionControlFlowReplacer],
52	[NodeType.LogicalExpression, ControlFlowReplacer.LogicalExpressionControlFlowReplacer],
53	[NodeType.Literal, ControlFlowReplacer.StringLiteralControlFlowReplacer]
54	]);
55
56	/**
57	* @type {WeakMap<TNodeWithStatements, IControlFlowStorage>}
58	*/
59	protected readonly controlFlowData: WeakMap<TNodeWithStatements, IControlFlowStorage> = new WeakMap();	395,616✔
60
61	/**
62	* @type {WeakMap<TNodeWithStatements, VariableDeclaration>}
63	*/
64	protected readonly hostNodesWithControlFlowNode: WeakMap<TNodeWithStatements, ESTree.VariableDeclaration> =	395,616✔
65	new WeakMap();
66
67	/**
68	* @type {TControlFlowReplacerFactory}
69	*/
70	protected readonly controlFlowReplacerFactory: TControlFlowReplacerFactory;
71
72	/**
73	* @type {TControlFlowStorageFactory}
74	*/
75	protected controlFlowStorageFactory: TControlFlowStorageFactory;
76
77	/**
78	* @type {TControlFlowCustomNodeFactory}
79	*/
80	protected readonly controlFlowCustomNodeFactory: TControlFlowCustomNodeFactory;
81
82	/**
83	* @type {WeakSet<ESTree.Function>}
84	*/
85	protected readonly visitedFunctionNodes: WeakSet<ESTree.Function> = new WeakSet();	395,616✔
86
87	/**
88	* @param {TControlFlowStorageFactoryCreator} controlFlowStorageFactoryCreator
89	* @param {TControlFlowReplacerFactory} controlFlowReplacerFactory
90	* @param {TControlFlowCustomNodeFactory} controlFlowCustomNodeFactory
91	* @param {IRandomGenerator} randomGenerator
92	* @param {IOptions} options
93	*/
94	public constructor(
95	@inject(ServiceIdentifiers.Factory__TControlFlowStorage)
96	controlFlowStorageFactoryCreator: TControlFlowStorageFactoryCreator,
97	@inject(ServiceIdentifiers.Factory__IControlFlowReplacer)
98	controlFlowReplacerFactory: TControlFlowReplacerFactory,
99	@inject(ServiceIdentifiers.Factory__IControlFlowCustomNode)
100	controlFlowCustomNodeFactory: TControlFlowCustomNodeFactory,
101	@inject(ServiceIdentifiers.IRandomGenerator) randomGenerator: IRandomGenerator,
102	@inject(ServiceIdentifiers.IOptions) options: IOptions
103	) {
104	super(randomGenerator, options);	395,616✔
105
106	this.controlFlowStorageFactory = controlFlowStorageFactoryCreator(	395,616✔
107	ControlFlowStorage.FunctionControlFlowStorage
108	);
109	this.controlFlowReplacerFactory = controlFlowReplacerFactory;	395,616✔
110	this.controlFlowCustomNodeFactory = controlFlowCustomNodeFactory;	395,616✔
111	}
112
113	/**
114	* @param {NodeTransformationStage} nodeTransformationStage
115	* @returns {IVisitor \| null}
116	*/
117	public getVisitor(nodeTransformationStage: NodeTransformationStage): IVisitor \| null {
118	if (!this.options.controlFlowFlattening) {	1,446,684✔
119	return null;	1,184,460✔
120	}
121
122	switch (nodeTransformationStage) {	262,224✔
123	case NodeTransformationStage.ControlFlowFlattening:	262,224✔
124	return {	63,300✔
125	leave: (
126	node: ESTree.Node,
127	parentNode: ESTree.Node \| null
128	): ESTree.Node \| estraverse.VisitorOption \| void => {
129	if (parentNode && NodeGuards.isFunctionNode(node)) {	11,017,594✔
130	return this.transformNode(node, parentNode);	323,663✔
131	}
132	}
133	};
134
135	default:
136	return null;	198,924✔
137	}
138	}
139
140	/**
141	* @param {Function} functionNode
142	* @param {Node} parentNode
143	* @returns {Function}
144	*/
145	public transformNode(functionNode: ESTree.Function, parentNode: ESTree.Node): ESTree.Function {
146	this.visitedFunctionNodes.add(functionNode);	2,496,774✔
147
148	if (!NodeGuards.isBlockStatementNode(functionNode.body)) {	2,496,774✔
149	return functionNode;	12,390✔
150	}
151
152	const hostNode: TNodeWithStatements = this.getHostNode(functionNode.body);	2,484,384✔
153	const controlFlowStorage: IControlFlowStorage = this.getControlFlowStorage(hostNode);	2,484,384✔
154
155	this.transformFunctionBody(functionNode, controlFlowStorage);	2,484,384✔
156
157	if (!controlFlowStorage.getLength()) {	2,484,384✔
158	return functionNode;	332,231✔
159	}
160
161	const controlFlowStorageNode: ESTree.VariableDeclaration = this.getControlFlowStorageNode(controlFlowStorage);	2,152,153✔
162
163	this.appendControlFlowStorageNode(hostNode, controlFlowStorageNode);	2,152,153✔
164
165	return functionNode;	2,152,153✔
166	}
167
168	/**
169	* @param {BlockStatement} functionNode
170	* @param {IControlFlowStorage} controlFlowStorage
171	*/
172	protected transformFunctionBody(functionNode: ESTree.Function, controlFlowStorage: IControlFlowStorage): void {
173	estraverse.replace(functionNode.body, {	2,484,384✔
174	enter: (node: ESTree.Node, parentNode: ESTree.Node \| null): estraverse.VisitorOption \| ESTree.Node =>
175	this.transformFunctionBodyNode(node, parentNode, functionNode, controlFlowStorage)	223,363,541✔
176	});
177	}
178
179	/**
180	* @param {Node} node
181	* @param {Node \| null} parentNode
182	* @param {Function} functionNode
183	* @param {IControlFlowStorage} controlFlowStorage
184	* @returns {ESTraverse.VisitorOption \| Node}
185	*/
186	protected transformFunctionBodyNode(
187	node: ESTree.Node,
188	parentNode: ESTree.Node \| null,
189	functionNode: ESTree.Function,
190	controlFlowStorage: IControlFlowStorage
191	): estraverse.VisitorOption \| ESTree.Node {
192	const shouldSkipTraverse = !parentNode \|\| NodeMetadata.isIgnoredNode(node) \|\| this.isVisitedFunctionNode(node);	221,463,433✔
193
194	if (shouldSkipTraverse) {	221,463,433✔
195	return estraverse.VisitorOption.Skip;	2,442,476✔
196	}
197
198	const controlFlowReplacerName: ControlFlowReplacer \| null = this.controlFlowReplacersMap.get(node.type) ?? null;	219,020,957✔
199
200	if (!controlFlowReplacerName) {	219,020,957✔
201	return node;	166,917,145✔
202	}
203
204	if (!this.isAllowedTransformationByThreshold()) {	52,103,812✔
205	return node;	121,020✔
206	}
207
208	const replacedNode: ESTree.Node = this.controlFlowReplacerFactory(controlFlowReplacerName).replace(	51,982,792✔
209	node,
210	parentNode,
211	controlFlowStorage
212	);
213
214	NodeUtils.parentizeNode(replacedNode, parentNode);	51,982,792✔
215
216	return replacedNode;	51,982,792✔
217	}
218
219	/**
220	* @param {BlockStatement} functionNodeBody
221	* @returns {TNodeWithStatements}
222	*/
223	protected getHostNode(functionNodeBody: ESTree.BlockStatement): TNodeWithStatements {
224	const blockScopesOfNode: TNodeWithStatements[] =
225	NodeStatementUtils.getParentNodesWithStatements(functionNodeBody);	2,484,384✔
226
227	if (blockScopesOfNode.length === 1) {	2,484,384✔
228	return functionNodeBody;	55,390✔
229	} else {
230	blockScopesOfNode.pop();	2,428,994✔
231	}
232
233	if (blockScopesOfNode.length > FunctionControlFlowTransformer.hostNodeSearchMinDepth) {	2,428,994✔
234	blockScopesOfNode.splice(0, FunctionControlFlowTransformer.hostNodeSearchMinDepth);	2,428,994✔
235	}
236
237	if (blockScopesOfNode.length > FunctionControlFlowTransformer.hostNodeSearchMaxDepth) {	2,428,994✔
238	blockScopesOfNode.length = FunctionControlFlowTransformer.hostNodeSearchMaxDepth;	1,482,274✔
239	}
240
241	return this.randomGenerator.getRandomGenerator().pickone(blockScopesOfNode);	2,428,994✔
242	}
243
244	/**
245	* @param {TNodeWithStatements} hostNode
246	* @returns {TControlFlowStorage}
247	*/
248	protected getControlFlowStorage(hostNode: TNodeWithStatements): IControlFlowStorage {
249	let controlFlowStorage: IControlFlowStorage;
250
251	const hostControlFlowStorage: IControlFlowStorage \| null = this.controlFlowData.get(hostNode) ?? null;	317,465✔
252
253	if (!hostControlFlowStorage) {	317,465✔
254	controlFlowStorage = this.controlFlowStorageFactory();	123,316✔
255	} else {
256	const existingControlFlowStorageNode: ESTree.VariableDeclaration \| null =
257	this.hostNodesWithControlFlowNode.get(hostNode) ?? null;	194,149✔
258
259	if (existingControlFlowStorageNode) {	194,149✔
260	NodeAppender.remove(hostNode, existingControlFlowStorageNode);	159,901✔
261	}
262
263	controlFlowStorage = hostControlFlowStorage;	194,149✔
264	}
265
266	this.controlFlowData.set(hostNode, controlFlowStorage);	317,465✔
267
268	return controlFlowStorage;	317,465✔
269	}
270
271	/**
272	* @param {IControlFlowStorage} controlFlowStorage
273	* @returns {VariableDeclaration}
274	*/
275	protected getControlFlowStorageNode(controlFlowStorage: IControlFlowStorage): ESTree.VariableDeclaration {
276	const controlFlowStorageCustomNode: ICustomNode<TInitialData<ControlFlowStorageNode>> =
277	this.controlFlowCustomNodeFactory(ControlFlowCustomNode.ControlFlowStorageNode);	2,152,153✔
278
279	controlFlowStorageCustomNode.initialize(controlFlowStorage);	2,152,153✔
280
281	const controlFlowStorageNode: ESTree.Node = controlFlowStorageCustomNode.getNode()[0];	2,152,153✔
282
283	if (!NodeGuards.isVariableDeclarationNode(controlFlowStorageNode)) {	2,152,153!
284	throw new Error(	×
285	'`controlFlowStorageNode` should contain `VariableDeclaration` node with control flow storage object'
286	);
287	}
288
289	return controlFlowStorageNode;	2,152,153✔
290	}
291
292	/**
293	* @param {TNodeWithStatements} hostNode
294	* @param {VariableDeclaration} controlFlowStorageNode
295	*/
296	protected appendControlFlowStorageNode(
297	hostNode: TNodeWithStatements,
298	controlFlowStorageNode: ESTree.VariableDeclaration
299	): void {
300	NodeUtils.parentizeAst(controlFlowStorageNode);	2,152,153✔
301	NodeAppender.prepend(hostNode, [controlFlowStorageNode]);	2,152,153✔
302
303	this.hostNodesWithControlFlowNode.set(hostNode, controlFlowStorageNode);	2,152,153✔
304	}
305
306	/**
307	* @param {NodeGuards} node
308	* @returns {boolean}
309	*/
310	protected isVisitedFunctionNode(node: ESTree.Node): boolean {
311	return NodeGuards.isFunctionNode(node) && this.visitedFunctionNodes.has(node);	221,460,973✔
312	}
313
314	/**
315	* @returns {boolean}
316	*/
317	protected isAllowedTransformationByThreshold(): boolean {
318	return this.randomGenerator.getMathRandom() <= this.options.controlFlowFlatteningThreshold;	2,884,907✔
319	}
320	}

javascript-obfuscator / javascript-obfuscator / 19907815758

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