/
in_op.go
62 lines (52 loc) · 1.04 KB
/
in_op.go
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package types
import (
"fmt"
"reflect"
)
type inOp struct {
slice reflect.Value
stickyErr error
}
var _ ValueAppender = (*inOp)(nil)
func InMulti(values ...interface{}) ValueAppender {
return &inOp{
slice: reflect.ValueOf(values),
}
}
func In(slice interface{}) ValueAppender {
v := reflect.ValueOf(slice)
if v.Kind() != reflect.Slice {
return &inOp{
stickyErr: fmt.Errorf("pg: In(non-slice %T)", slice),
}
}
return &inOp{
slice: v,
}
}
func (in *inOp) AppendValue(b []byte, flags int) ([]byte, error) {
if in.stickyErr != nil {
return nil, in.stickyErr
}
return appendIn(b, in.slice, flags), nil
}
func appendIn(b []byte, slice reflect.Value, flags int) []byte {
sliceLen := slice.Len()
for i := 0; i < sliceLen; i++ {
if i > 0 {
b = append(b, ',')
}
elem := slice.Index(i)
if elem.Kind() == reflect.Interface {
elem = elem.Elem()
}
if elem.Kind() == reflect.Slice {
b = append(b, '(')
b = appendIn(b, elem, flags)
b = append(b, ')')
} else {
b = appendValue(b, elem, flags)
}
}
return b
}