cloudfunctions/ClearingRedundantFolders/node_modules/protobufjs/src/reader.js

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"use strict";
module.exports = Reader;

var util      = require("./util/minimal");

var BufferReader; // cyclic

var LongBits  = util.LongBits,
    utf8      = util.utf8;

/* istanbul ignore next */
function indexOutOfRange(reader, writeLength) {
    return RangeError("index out of range: " + reader.pos + " + " + (writeLength || 1) + " > " + reader.len);
}

/**
 * Constructs a new reader instance using the specified buffer.
 * @classdesc Wire format reader using `Uint8Array` if available, otherwise `Array`.
 * @constructor
 * @param {Uint8Array} buffer Buffer to read from
 */
function Reader(buffer) {

    /**
     * Read buffer.
     * @type {Uint8Array}
     */
    this.buf = buffer;

    /**
     * Read buffer position.
     * @type {number}
     */
    this.pos = 0;

    /**
     * Read buffer length.
     * @type {number}
     */
    this.len = buffer.length;
}

var create_array = typeof Uint8Array !== "undefined"
    ? function create_typed_array(buffer) {
        if (buffer instanceof Uint8Array || Array.isArray(buffer))
            return new Reader(buffer);
        throw Error("illegal buffer");
    }
    /* istanbul ignore next */
    : function create_array(buffer) {
        if (Array.isArray(buffer))
            return new Reader(buffer);
        throw Error("illegal buffer");
    };

/**
 * Creates a new reader using the specified buffer.
 * @function
 * @param {Uint8Array|Buffer} buffer Buffer to read from
 * @returns {Reader|BufferReader} A {@link BufferReader} if `buffer` is a Buffer, otherwise a {@link Reader}