diffusion
Version:
Diffusion JavaScript client
84 lines (83 loc) • 3.23 kB
JavaScript
;
/**
* @module diffusion.datatypes
*/
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.BinaryDeltaImpl = void 0;
var tokeniser_1 = require("./../../cbor/tokeniser");
var buffer_slice_1 = require("./../../data/buffer-slice");
var uint8array_1 = require("./../../util/uint8array");
/**
* Implementation of the {@link BinaryDelta} interface.
*/
var BinaryDeltaImpl = /** @class */ (function (_super) {
__extends(BinaryDeltaImpl, _super);
/**
* Create a new BinaryDeltaImpl
*
* @param buffer the buffer that contains the delta as CBOR data
* @param offset the offset of the data in the buffer representing the delta
* @param length the number of the data in the buffer representing the delta
*/
function BinaryDeltaImpl(buffer, offset, length) {
if (offset === void 0) { offset = 0; }
if (length === void 0) { length = buffer.length; }
return _super.call(this, buffer, offset, length) || this;
}
/**
* Parse the delta as CBOR tokens and let the visitor handle them
* @throws an {@link InvalidDataError} if there was an error parsing the next token
*
* @param visitor the visitor to handle the tokens
*/
BinaryDeltaImpl.prototype.visit = function (visitor) {
if (this.hasChanges()) {
var tokeniser = new tokeniser_1.Tokeniser(this.$buffer, this.$offset, this.$length);
while (tokeniser.hasRemaining()) {
var token = tokeniser.nextToken();
var isEnd = false;
if (uint8array_1.isUint8Array(token.value)) {
isEnd = !visitor.insert(token.value);
}
else {
var start = token.value;
var end = tokeniser.nextToken().value;
isEnd = !visitor.match(start, end);
}
if (isEnd) {
visitor.end();
return;
}
}
visitor.end();
}
else {
visitor.noChange();
}
};
/**
* Check if the binary delta has any changes
*
* @return `true` if the binary delta contains any data
*/
BinaryDeltaImpl.prototype.hasChanges = function () {
return this.$length !== 1;
};
return BinaryDeltaImpl;
}(buffer_slice_1.BufferSlice));
exports.BinaryDeltaImpl = BinaryDeltaImpl;