45 lines
1.0 KiB
JavaScript
45 lines
1.0 KiB
JavaScript
'use strict';
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const StreamBase = require('./StreamBase');
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const withParser = require('../utils/withParser');
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class StreamArray extends StreamBase {
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static make(options) {
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return new StreamArray(options);
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}
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static withParser(options) {
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return withParser(StreamArray.make, options);
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}
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constructor(options) {
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super(options);
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this._level = 1;
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this._counter = 0;
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}
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_wait(chunk, _, callback) {
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// first chunk should open an array
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if (chunk.name !== 'startArray') {
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return callback(new Error('Top-level object should be an array.'));
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}
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this._transform = this._filter;
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return this._transform(chunk, _, callback);
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}
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_push(discard) {
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if (this._assembler.current.length) {
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if (discard) {
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++this._counter;
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this._assembler.current.pop();
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} else {
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this.push({key: this._counter++, value: this._assembler.current.pop()});
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}
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}
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}
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}
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StreamArray.streamArray = StreamArray.make;
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StreamArray.make.Constructor = StreamArray;
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module.exports = StreamArray;
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