File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
class Bitfield {
constructor(type, flags = []) {
this.type = type;
this.flags = flags;
}
decode(stream) {
const val = this.type.decode(stream);
const res = {};
for (let i = 0; i < this.flags.length; i++) {
const flag = this.flags[i];
if (flag != null) {
res[flag] = !!(val & (1 << i));
}
}
return res;
}
size() {
return this.type.size();
}
encode(stream, keys) {
let val = 0;
for (let i = 0; i < this.flags.length; i++) {
const flag = this.flags[i];
if (flag != null) {
if (keys[flag]) { val |= (1 << i); }
}
}
return this.type.encode(stream, val);
}
}
module.exports = Bitfield;