jsonbinpack/dist/lib/encoder/number/decode.js

A space-efficient schema-driven binary JSON serialization format based on JSON Schema

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DOUBLE_VARINT_TUPLE = void 0;
var zigzag_1 = require("../integer/zigzag");
var varint_1 = require("../integer/varint");
var DOUBLE_VARINT_TUPLE = function (buffer, offset, _options) {
    var integralResult = varint_1.varintDecode(buffer, offset);
    var pointResult = varint_1.varintDecode(buffer, offset + integralResult.bytes);
    var integralValue = zigzag_1.zigzagDecode(integralResult.value);
    var integral = integralValue.toString();
    var point = integralValue < BigInt(0)
        ? Number(zigzag_1.zigzagDecode(pointResult.value)) + 1
        : Number(zigzag_1.zigzagDecode(pointResult.value));
    var bytes = integralResult.bytes + pointResult.bytes;
    if (point === 0 || (point === 1 && integralValue < BigInt(0))) {
        return {
            value: Number(integralValue),
            bytes: bytes
        };
    }
    else if (point < 0) {
        var zeroes = "0." + '0'.repeat(Math.abs(point) - 1);
        return {
            value: parseFloat(integralValue < 0
                ? "-" + zeroes + integral.slice(1)
                : "" + zeroes + integral),
            bytes: bytes
        };
    }
    return {
        value: parseFloat(integral.slice(0, point) + "." + integral.slice(point)),
        bytes: bytes
    };
};
exports.DOUBLE_VARINT_TUPLE = DOUBLE_VARINT_TUPLE;