package main

import "github.com/shopspring/decimal"

// Dimension represents the physical dimension of a unit.
type Dimension int

const (
	DimNone Dimension = iota
	DimCurrency
	DimLength
	DimMass
	DimTime
	DimDigital
	DimArea
	DimTemp
	DimAngle
	DimIP
	DimCIDR
	DimString
)

// Result holds the evaluated numeric value and its dimension.
type Result struct {
	Value decimal.Decimal
	Dim   Dimension
}

// UnitInfo stores the conversion factor (to the pivot unit) and its dimension.
type UnitInfo struct {
	Factor    decimal.Decimal
	Dimension Dimension
	Label     string
}

// UserFunc represents a user-defined function.
type UserFunc struct {
	Args []string `json:"args"`
	Expr string   `json:"expr"`
}