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59 lines
2.1 KiB
59 lines
2.1 KiB
// Protocol Buffers for Go with Gadgets |
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// |
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// Copyright (c) 2018, The GoGo Authors. All rights reserved. |
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// http://github.com/gogo/protobuf |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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// +build purego appengine js |
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// This file contains an implementation of proto field accesses using package reflect. |
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// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can |
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// be used on App Engine. |
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package proto |
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import ( |
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"reflect" |
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) |
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// TODO: untested, so probably incorrect. |
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func (p pointer) getRef() pointer { |
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return pointer{v: p.v.Addr()} |
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} |
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func (p pointer) appendRef(v pointer, typ reflect.Type) { |
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slice := p.getSlice(typ) |
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elem := v.asPointerTo(typ).Elem() |
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newSlice := reflect.Append(slice, elem) |
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slice.Set(newSlice) |
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} |
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func (p pointer) getSlice(typ reflect.Type) reflect.Value { |
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sliceTyp := reflect.SliceOf(typ) |
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slice := p.asPointerTo(sliceTyp) |
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slice = slice.Elem() |
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return slice |
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}
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