package clause

type JoinType string

const (
	CrossJoin JoinType = "CROSS"
	InnerJoin JoinType = "INNER"
	LeftJoin  JoinType = "LEFT"
	RightJoin JoinType = "RIGHT"
)

// Join clause for from
type Join struct {
	Type       JoinType
	Table      Table
	ON         Where
	Using      []string
	Expression Expression
}

func (join Join) Build(builder Builder) {
	if join.Expression != nil {

	return c&0x3 != 0
}

func (c info) category() category {
	small := c & catSmallMask
	if small != 0 {
		return category(small)
	}
	return category(c & catBigMask)
}

func (c info) joinType() info {
	if c.isMapped() {
		return 0
	}
	return (c >> joinShift) & joinMask
}

func (c info) isModifier() bool {
	return c&(modifier|catSmallMask) == modifier
}