capnp-js/reader/Data.js

Capnproto run-time decoding and encoding for Node

var type = require('../type');
var statics = require('./list/statics');
var methods = require('./list/methods');
    var t = new type.Terminal();
    var ct = {
        meta: 1,
        layout: 2,
        dataBytes: 1,
        pointersBytes: 0
    };
    var Data = function(arena, depth, isOrphan, list) {
        this._arena = arena;
        this._depth = depth;
        this._isOrphan = isOrphan;
        this._segment = list.segment;
        this._begin = list.begin;
        this._length = list.length;
        this._dataBytes = 1;
        this._pointersBytes = 0;
        this._arena.limiter.read(list.segment, list.begin, list.length);
    };
    Data._TYPE = t;
    Data._CT = ct;
    Data._FIELD = {};
    Data._HASH = "D";
    Data._B64_NULL = "AQAAAAIAAAA=";
    statics.install(Data);
    Data.prototype = {
        _TYPE: t,
        _CT: ct,
        _rt: methods.rt,
        _layout: methods.layout
    };
    Data.prototype.get = function(index) {
        if (index < 0 || this._length <= index) {
            throw new RangeError();
        }
        return this._segment[this._begin + index];
    };
    Data.prototype.raw = function() {
        return this._segment.slice(this._begin, this._begin + this._length);
    };
    methods.install(Data.prototype);
    module.exports = Data;