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class Enum {
constructor(type, options = []) {
this.type = type;
this.options = options;
}
decode(stream) {
const index = this.type.decode(stream);
return this.options[index] || index;
}
size() {
return this.type.size();
}
encode(stream, val) {
const index = this.options.indexOf(val);
if (index === -1) {
throw new Error(`Unknown option in enum: ${val}`);
}
return this.type.encode(stream, index);
}
}
module.exports = Enum;