@gmod/cram
Version:
read CRAM files with pure Javascript
39 lines • 1.58 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const _base_ts_1 = __importDefault(require("./_base.js"));
const util_ts_1 = require("../util.js");
class ByteArrayStopCodec extends _base_ts_1.default {
constructor(parameters, dataType, instantiateCodec) {
super(parameters, dataType);
this.instantiateCodec = instantiateCodec;
}
decode(slice, coreDataBlock, blocksByContentId, cursors) {
const lengthCodec = this._getLengthCodec();
const arrayLength = lengthCodec.decode(slice, coreDataBlock, blocksByContentId, cursors) || 0;
const dataCodec = this._getDataCodec();
const data = new Uint8Array(arrayLength);
for (let i = 0; i < arrayLength; i += 1) {
data[i] =
dataCodec.decode(slice, coreDataBlock, blocksByContentId, cursors) || 0;
}
return data;
}
// memoize
_getLengthCodec() {
const encodingParams = this.parameters.lengthsEncoding;
return this.instantiateCodec(encodingParams, 'int');
}
// memoize
_getDataCodec() {
const encodingParams = this.parameters.valuesEncoding;
return this.instantiateCodec(encodingParams, 'byte');
}
}
exports.default = ByteArrayStopCodec;
'_getLengthCodec _getDataCodec'.split(' ').forEach(method => {
(0, util_ts_1.tinyMemoize)(ByteArrayStopCodec, method);
});
//# sourceMappingURL=byteArrayLength.js.map