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authorMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
committerMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
commita031b83a09a8628435317a03f199cdc18b78262f (patch)
treebc017a96769ce6de33745b8b0b1304ccf38e9df0 /vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go
parent2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff)
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Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go')
-rw-r--r--vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go107
1 files changed, 107 insertions, 0 deletions
diff --git a/vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go b/vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go
new file mode 100644
index 000000000..ad7c85179
--- /dev/null
+++ b/vendor/github.com/gogo/protobuf/proto/pointer_unsafe_gogo.go
@@ -0,0 +1,107 @@
+// Protocol Buffers for Go with Gadgets
+//
+// Copyright (c) 2013, The GoGo Authors. All rights reserved.
+// http://github.com/gogo/protobuf
+//
+// 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.
+//
+// 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.
+
+// +build !appengine
+
+// This file contains the implementation of the proto field accesses using package unsafe.
+
+package proto
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+func structPointer_InterfaceAt(p structPointer, f field, t reflect.Type) interface{} {
+ point := unsafe.Pointer(uintptr(p) + uintptr(f))
+ r := reflect.NewAt(t, point)
+ return r.Interface()
+}
+
+func structPointer_InterfaceRef(p structPointer, f field, t reflect.Type) interface{} {
+ point := unsafe.Pointer(uintptr(p) + uintptr(f))
+ r := reflect.NewAt(t, point)
+ if r.Elem().IsNil() {
+ return nil
+ }
+ return r.Elem().Interface()
+}
+
+func copyUintPtr(oldptr, newptr uintptr, size int) {
+ oldbytes := make([]byte, 0)
+ oldslice := (*reflect.SliceHeader)(unsafe.Pointer(&oldbytes))
+ oldslice.Data = oldptr
+ oldslice.Len = size
+ oldslice.Cap = size
+ newbytes := make([]byte, 0)
+ newslice := (*reflect.SliceHeader)(unsafe.Pointer(&newbytes))
+ newslice.Data = newptr
+ newslice.Len = size
+ newslice.Cap = size
+ copy(newbytes, oldbytes)
+}
+
+func structPointer_Copy(oldptr structPointer, newptr structPointer, size int) {
+ copyUintPtr(uintptr(oldptr), uintptr(newptr), size)
+}
+
+func appendStructPointer(base structPointer, f field, typ reflect.Type) structPointer {
+ size := typ.Elem().Size()
+
+ oldHeader := structPointer_GetSliceHeader(base, f)
+ oldSlice := reflect.NewAt(typ, unsafe.Pointer(oldHeader)).Elem()
+ newLen := oldHeader.Len + 1
+ newSlice := reflect.MakeSlice(typ, newLen, newLen)
+ reflect.Copy(newSlice, oldSlice)
+ bas := toStructPointer(newSlice)
+ oldHeader.Data = uintptr(bas)
+ oldHeader.Len = newLen
+ oldHeader.Cap = newLen
+
+ return structPointer(unsafe.Pointer(uintptr(unsafe.Pointer(bas)) + uintptr(uintptr(newLen-1)*size)))
+}
+
+func structPointer_FieldPointer(p structPointer, f field) structPointer {
+ return structPointer(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+func structPointer_GetRefStructPointer(p structPointer, f field) structPointer {
+ return structPointer((*structPointer)(unsafe.Pointer(uintptr(p) + uintptr(f))))
+}
+
+func structPointer_GetSliceHeader(p structPointer, f field) *reflect.SliceHeader {
+ return (*reflect.SliceHeader)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+func structPointer_Add(p structPointer, size field) structPointer {
+ return structPointer(unsafe.Pointer(uintptr(p) + uintptr(size)))
+}
+
+func structPointer_Len(p structPointer, f field) int {
+ return len(*(*[]interface{})(unsafe.Pointer(structPointer_GetRefStructPointer(p, f))))
+}