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60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package ast
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import "github.com/sqlc-dev/sqlc/internal/sql/format"
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type JoinExpr struct {
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Tag NodeTag[JoinExpr] `json:"tag"`
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Jointype JoinType `json:"jointype"`
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IsNatural bool `json:"is_natural"`
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Larg Node `json:"larg,omitempty"`
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Rarg Node `json:"rarg,omitempty"`
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UsingClause *List `json:"using_clause,omitempty"`
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Quals Node `json:"quals,omitempty"`
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Alias *Alias `json:"alias,omitempty"`
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Rtindex int `json:"rtindex"`
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}
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func (n *JoinExpr) Pos() int {
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return 0
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}
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func (n *JoinExpr) Format(buf *TrackedBuffer, d format.Dialect) {
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if n == nil {
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return
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}
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buf.astFormat(n.Larg, d)
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if n.Jointype == JoinTypeComma {
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buf.WriteString(",")
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buf.beforeClause(n.Rarg, d)
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buf.Line()
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} else {
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buf.beforeClause(n.Rarg, d)
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buf.Line()
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if n.IsNatural {
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buf.WriteString("NATURAL ")
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}
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switch n.Jointype {
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case JoinTypeLeft:
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buf.WriteString("LEFT JOIN ")
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case JoinTypeRight:
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buf.WriteString("RIGHT JOIN ")
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case JoinTypeFull:
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buf.WriteString("FULL JOIN ")
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case JoinTypeCross:
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buf.WriteString("CROSS JOIN ")
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default:
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buf.WriteString("JOIN ")
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}
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}
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buf.astFormat(n.Rarg, d)
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if items(n.UsingClause) {
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buf.WriteString(" USING (")
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buf.join(n.UsingClause, d, ", ")
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buf.WriteString(")")
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} else if set(n.Quals) {
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buf.WriteString(" ON ")
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buf.condition(n.Quals, d)
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}
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}
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