/
mapper.go
57 lines (49 loc) · 1.15 KB
/
mapper.go
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package base
import (
"reflect"
"github.com/Metadiv-Technology-Limited/objmap"
)
type Mapper[T any] struct {
BeforeMap2Model func(from any) any
AfterMap2Model func(from any, to *T) *T
}
func (m *Mapper[T]) Map2Model(from any) *T {
from = neverBePtr(from)
if m.BeforeMap2Model != nil {
from = m.BeforeMap2Model(from)
}
to := objmap.Map2Model[T](from)
if m.AfterMap2Model != nil {
to = m.AfterMap2Model(from, to)
}
return to
}
func (m *Mapper[T]) Map2Models(from any) []T {
from = neverBePtr(from)
fromVal := reflect.ValueOf(from)
if fromVal.Kind() != reflect.Slice {
panic("from must be a slice")
}
to := make([]T, fromVal.Len())
for i := 0; i < fromVal.Len(); i++ {
to[i] = *m.Map2Model(fromVal.Index(i).Interface())
}
return to
}
func (m *Mapper[T]) MapModel2Model(from any, to *T) *T {
from = neverBePtr(from)
if m.BeforeMap2Model != nil {
from = m.BeforeMap2Model(from)
}
to = objmap.MapModel2Model[T](from, to)
if m.AfterMap2Model != nil {
to = m.AfterMap2Model(from, to)
}
return to
}
func neverBePtr(v any) any {
if reflect.TypeOf(v).Kind() == reflect.Ptr {
return reflect.ValueOf(v).Elem().Interface()
}
return v
}