@adguard/agtree/dist/deserializer/empty-rule-deserializer.js

Tool set for working with adblock filter lists

/*
 * AGTree v3.2.2 (build date: Tue, 08 Jul 2025 13:39:47 GMT)
 * (c) 2025 Adguard Software Ltd.
 * Released under the MIT license
 * https://github.com/AdguardTeam/tsurlfilter/tree/master/packages/agtree#readme
 */
import { BaseDeserializer } from './base-deserializer.js';
import { RuleCategory } from '../nodes/index.js';
import { NULL } from '../utils/constants.js';
import { EmptyRuleMarshallingMap } from '../marshalling-utils/empty-rule-common.js';
import { AdblockSyntax } from '../utils/adblockers.js';
import { BinaryTypeMarshallingMap } from '../marshalling-utils/misc/binary-type-common.js';

/* eslint-disable no-param-reassign */
/**
 * Deserializer for empty rule nodes.
 * This class handles the deserialization of empty rule nodes from binary format.
 */
class EmptyRuleDeserializer extends BaseDeserializer {
    /**
     * Deserializes an empty rule node from binary format.
     *
     * @param buffer ByteBuffer for reading binary data.
     * @param node Destination node.
     */
    static deserialize(buffer, node) {
        buffer.assertUint8(BinaryTypeMarshallingMap.EmptyRule);
        node.type = 'EmptyRule';
        node.category = RuleCategory.Empty;
        node.syntax = AdblockSyntax.Common;
        let prop = buffer.readUint8();
        while (prop !== NULL) {
            switch (prop) {
                case EmptyRuleMarshallingMap.Start:
                    node.start = buffer.readUint32();
                    break;
                case EmptyRuleMarshallingMap.End:
                    node.end = buffer.readUint32();
                    break;
                default:
                    throw new Error(`Invalid property: ${prop}.`);
            }
            prop = buffer.readUint8();
        }
    }
}

export { EmptyRuleDeserializer };