You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.5 KiB
62 lines
2.5 KiB
package pgx
|
|
|
|
import (
|
|
"database/sql/driver"
|
|
"reflect"
|
|
)
|
|
|
|
// This file contains code copied from the Go standard library due to the
|
|
// required function not being public.
|
|
|
|
// Copyright (c) 2009 The Go Authors. All rights reserved.
|
|
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following disclaimer
|
|
// in the documentation and/or other materials provided with the
|
|
// distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// From database/sql/convert.go
|
|
|
|
var valuerReflectType = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
|
|
|
|
// callValuerValue returns vr.Value(), with one exception:
|
|
// If vr.Value is an auto-generated method on a pointer type and the
|
|
// pointer is nil, it would panic at runtime in the panicwrap
|
|
// method. Treat it like nil instead.
|
|
// Issue 8415.
|
|
//
|
|
// This is so people can implement driver.Value on value types and
|
|
// still use nil pointers to those types to mean nil/NULL, just like
|
|
// string/*string.
|
|
//
|
|
// This function is mirrored in the database/sql/driver package.
|
|
func callValuerValue(vr driver.Valuer) (v driver.Value, err error) {
|
|
if rv := reflect.ValueOf(vr); rv.Kind() == reflect.Ptr &&
|
|
rv.IsNil() &&
|
|
rv.Type().Elem().Implements(valuerReflectType) {
|
|
return nil, nil
|
|
}
|
|
return vr.Value()
|
|
}
|