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|
package bexpr
import (
"reflect"
"sync"
)
var DefaultRegistry Registry = NewSyncRegistry()
type Registry interface {
GetFieldConfigurations(reflect.Type) (FieldConfigurations, error)
}
type SyncRegistry struct {
configurations map[reflect.Type]FieldConfigurations
lock sync.RWMutex
}
func NewSyncRegistry() *SyncRegistry {
return &SyncRegistry{
configurations: make(map[reflect.Type]FieldConfigurations),
}
}
func (r *SyncRegistry) GetFieldConfigurations(rtype reflect.Type) (FieldConfigurations, error) {
if r != nil {
r.lock.RLock()
configurations, ok := r.configurations[rtype]
r.lock.RUnlock()
if ok {
return configurations, nil
}
}
fields, err := generateFieldConfigurations(rtype)
if err != nil {
return nil, err
}
if r != nil {
r.lock.Lock()
r.configurations[rtype] = fields
r.lock.Unlock()
}
return fields, nil
}
type nilRegistry struct{}
// The pass through registry can be used to prevent using the default registry and thus storing
// any field configurations
var NilRegistry = (*nilRegistry)(nil)
func (r *nilRegistry) GetFieldConfigurations(rtype reflect.Type) (FieldConfigurations, error) {
fields, err := generateFieldConfigurations(rtype)
return fields, err
}
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