/
type.go
66 lines (59 loc) · 1.79 KB
/
type.go
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package raw
import (
"reflect"
"unsafe"
)
// Repeatedly uses *reflect.Indirect* to step through a series of *reflect.Ptr* values
// and arrive at the concrete value they point to.
//
func DereferenceAll(v interface{}) interface{} {
var r reflect.Value
for r = reflect.ValueOf(v); r.Kind() == reflect.Ptr; r = reflect.Indirect(r) {}
return r.Interface()
}
// Uses reflect.Set to create a *shallow* copy of an existing value.
//
func shallowCopy(v reflect.Value) (r reflect.Value) {
r = reflect.New(v.Type())
r.Elem().Set(v)
return
}
// Uses reflection to create a *shallow* copy of an existing value.
// This will only work if the Type of value being copied is *settable* according to the language specification.
//
func ShallowCopy(v interface{}) (r interface{}) {
var rv reflect.Value
switch v := v.(type) {
case reflect.Value:
rv = shallowCopy(v)
default:
rv = shallowCopy(reflect.ValueOf(v))
}
return rv.Interface()
}
func MakeAddressable(v reflect.Value) reflect.Value {
if !v.CanAddr() {
v = shallowCopy(v)
}
return v
}
var _a interface{} = 0
var POINTER = reflect.TypeOf(unsafe.Pointer(&_a))
var UINTPTR = reflect.TypeOf(uintptr(0))
var INTERFACE = reflect.TypeOf(_a)
var BOOLEAN = reflect.TypeOf(true)
var BYTE = reflect.TypeOf(byte(0))
var INT = reflect.TypeOf(int(0))
var INT8 = reflect.TypeOf(int8(0))
var INT16 = reflect.TypeOf(int16(0))
var INT32 = reflect.TypeOf(int32(0))
var INT64 = reflect.TypeOf(int64(0))
var UINT = reflect.TypeOf(uint(0))
var UINT8 = reflect.TypeOf(uint8(0))
var UINT16 = reflect.TypeOf(uint16(0))
var UINT32 = reflect.TypeOf(uint32(0))
var UINT64 = reflect.TypeOf(uint64(0))
var FLOAT32 = reflect.TypeOf(float32(0.0))
var FLOAT64 = reflect.TypeOf(float64(0.0))
var COMPLEX64 = reflect.TypeOf(complex64(0))
var COMPLEX128 = reflect.TypeOf(complex128(0))