40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
require('classtool');
|
|
|
|
function ClassSpec(b) {
|
|
var superclass = b.superclass || require('./EncodedData').class();
|
|
|
|
function VersionedData(version, payload) {
|
|
if(typeof version != 'number') {
|
|
VersionedData.super(this, arguments);
|
|
return;
|
|
};
|
|
this.data = new Buffer(payload.length + 1);
|
|
this.__proto__ = this.encodings['binary'];
|
|
this.version(version);
|
|
this.payload(payload);
|
|
};
|
|
VersionedData.superclass = superclass;
|
|
superclass.applyEncodingsTo(VersionedData);
|
|
|
|
// get or set the version data (the first byte of the address)
|
|
VersionedData.prototype.version = function(num) {
|
|
if(num || (num === 0)) {
|
|
this.doAsBinary(function() {this.data.writeUInt8(num, 0);});
|
|
return num;
|
|
}
|
|
return this.as('binary').readUInt8(0);
|
|
};
|
|
|
|
// get or set the payload data (as a Buffer object)
|
|
VersionedData.prototype.payload = function(data) {
|
|
if(data) {
|
|
this.doAsBinary(function() {data.copy(this.data,1);});
|
|
return data;
|
|
}
|
|
return this.as('binary').slice(1);
|
|
};
|
|
|
|
return VersionedData;
|
|
};
|
|
module.defineClass(ClassSpec);
|