github.com/modern-go/refLect2@v1.0.1/unsafe_ptr.go (about)

     1  package reflect2
     2  
     3  import (
     4  	"reflect"
     5  	"unsafe"
     6  )
     7  
     8  type UnsafePtrType struct {
     9  	unsafeType
    10  }
    11  
    12  func newUnsafePtrType(cfg *frozenConfig, type1 reflect.Type) *UnsafePtrType {
    13  	return &UnsafePtrType{
    14  		unsafeType: *newUnsafeType(cfg, type1),
    15  	}
    16  }
    17  
    18  func (type2 *UnsafePtrType) IsNil(obj interface{}) bool {
    19  	if obj == nil {
    20  		return true
    21  	}
    22  	objEFace := unpackEFace(obj)
    23  	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
    24  	return type2.UnsafeIsNil(objEFace.data)
    25  }
    26  
    27  func (type2 *UnsafePtrType) UnsafeIsNil(ptr unsafe.Pointer) bool {
    28  	if ptr == nil {
    29  		return true
    30  	}
    31  	return *(*unsafe.Pointer)(ptr) == nil
    32  }
    33  
    34  func (type2 *UnsafePtrType) LikePtr() bool {
    35  	return true
    36  }
    37  
    38  func (type2 *UnsafePtrType) Indirect(obj interface{}) interface{} {
    39  	objEFace := unpackEFace(obj)
    40  	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
    41  	return type2.UnsafeIndirect(objEFace.data)
    42  }
    43  
    44  func (type2 *UnsafePtrType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
    45  	return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
    46  }