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operator.go
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operator.go
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package cr
import (
"fmt"
"strings"
)
type Operator string
const (
OpEmpty Operator = ""
OpAdd Operator = "+"
OpSub Operator = "-"
OpMul Operator = "*"
OpDiv Operator = "/"
OpMod Operator = "%"
OpBitAnd Operator = "&"
OpBitOr Operator = "|"
OpBitExOr Operator = "^"
OpEqual Operator = "="
OpNotEqual Operator = "<>"
OpGt Operator = ">"
OpGte Operator = ">="
OpLt Operator = "<"
OpLte Operator = "<="
OpAddEquals Operator = "+="
OpSubEquals Operator = "-="
OpMulEquals Operator = "*="
OpDivEquals Operator = "/="
OpModEquals Operator = "%="
OpBitAndEquals Operator = "&="
OpBitExEquals Operator = "^-="
OpBitOrEquals Operator = "|*="
OpIS Operator = "IS"
OpALL Operator = "ALL"
OpAND Operator = "AND"
OpANY Operator = "ANY"
OpBETWEEN Operator = "BETWEEN"
OpEXISTS Operator = "EXISTS"
OpIN Operator = "IN"
OpLIKE Operator = "LIKE"
OpILIKE Operator = "ILIKE"
OpSIMILAR Operator = "SIMILAR TO"
OpNOT Operator = "NOT"
OpOR Operator = "OR"
OpSOME Operator = "SOME"
)
func (o Operator) String() string {
return string(o)
}
func (o Operator) Append(a Operator) Operator {
return Operator(fmt.Sprintf("%s %s", o, a))
}
func (o Operator) Prepend(a Operator) Operator {
return Operator(fmt.Sprintf("%s %s", a, o))
}
func (o Operator) Has(a Operator) bool {
return o == a || strings.Contains(o.String(), a.String())
}
func (o Operator) IsEmpty() bool {
return o == OpEmpty
}