expr

var ErrDivByZero = errors.New("division by zero")

var ErrModByZero = errors.New("division by zero")

var NameOp = map[string]int{
	"not": Not,

	"or":  Or,
	"and": And,
	"+":   Plus,
	"-":   Minus,
	"*":   Mult,
	"/":   Div,
	"%":   Mod,

	"cast": Typecast,

	"replace":        Replace,
	"regexp_match":   RegexpMatch,
	"regexp_extract": RegexpExtract,

	"=":  EQ,
	"<":  LT,
	"<=": LE,
	">":  GT,
	">=": GE,
	"<>": NE,

	"in": IN,

	"isnull":    ISNULL,
	"isnotnull": ISNOTNULL,

	"sum":   Sum,
	"avg":   Avg,
	"min":   Min,
	"max":   Max,
	"count": Count,
}

var OpName = map[int]string{
	Not: "not",

	Or:    "or",
	And:   "and",
	Plus:  "+",
	Minus: "-",
	Mult:  "*",
	Div:   "/",
	Mod:   "%",

	Replace:       "replace",
	Typecast:      "cast",
	RegexpMatch:   "regexp_match",
	RegexpExtract: "regexp_extract",

	EQ: "=",
	LT: "<",
	LE: "<=",
	GT: ">",
	GE: ">=",
	NE: "<>",

	IN: "in",

	ISNULL:    "isnull",
	ISNOTNULL: "isnotnull",

	Sum:   "sum",
	Avg:   "avg",
	Min:   "min",
	Max:   "max",
	Count: "count",
}