prometheus/vendor/github.com/json-iterator/go/feature_json_number.go

package jsoniter

import (
	"encoding/json"
	"strconv"
)

type Number string

// String returns the literal text of the number.
func (n Number) String() string { return string(n) }

// Float64 returns the number as a float64.
func (n Number) Float64() (float64, error) {
	return strconv.ParseFloat(string(n), 64)
}

// Int64 returns the number as an int64.
func (n Number) Int64() (int64, error) {
	return strconv.ParseInt(string(n), 10, 64)
}

func CastJsonNumber(val interface{}) (string, bool) {
	switch typedVal := val.(type) {
	case json.Number:
		return string(typedVal), true
	case Number:
		return string(typedVal), true
	}
	return "", false
}