84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
// Copyright 2021 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package test
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import "gvisor.dev/gvisor/pkg/marshal/primitive"
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// Type12Dynamic is a dynamically sized struct which depends on the
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// autogenerator to generate some Marshallable methods for it.
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//
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// +marshal dynamic
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type Type12Dynamic struct {
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X primitive.Int64
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Y []primitive.Int64
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}
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// SizeBytes implements marshal.Marshallable.SizeBytes.
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func (t *Type12Dynamic) SizeBytes() int {
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return (len(t.Y) * 8) + t.X.SizeBytes()
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}
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// MarshalBytes implements marshal.Marshallable.MarshalBytes.
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func (t *Type12Dynamic) MarshalBytes(dst []byte) {
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t.X.MarshalBytes(dst)
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dst = dst[t.X.SizeBytes():]
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for i, x := range t.Y {
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x.MarshalBytes(dst[i*8 : (i+1)*8])
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}
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}
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// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
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func (t *Type12Dynamic) UnmarshalBytes(src []byte) {
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t.X.UnmarshalBytes(src)
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if t.Y != nil {
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t.Y = t.Y[:0]
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}
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for i := t.X.SizeBytes(); i < len(src); i += 8 {
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var x primitive.Int64
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x.UnmarshalBytes(src[i:])
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t.Y = append(t.Y, x)
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}
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}
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// Type13Dynamic is a dynamically sized struct which depends on the
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// autogenerator to generate some Marshallable methods for it.
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//
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// It represents a string in memory which is preceded by a uint32 indicating
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// the string size.
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//
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// +marshal dynamic
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type Type13Dynamic string
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// SizeBytes implements marshal.Marshallable.SizeBytes.
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func (t *Type13Dynamic) SizeBytes() int {
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return (*primitive.Uint32)(nil).SizeBytes() + len(*t)
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}
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// MarshalBytes implements marshal.Marshallable.MarshalBytes.
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func (t *Type13Dynamic) MarshalBytes(dst []byte) {
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strLen := primitive.Uint32(len(*t))
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strLen.MarshalBytes(dst)
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dst = dst[strLen.SizeBytes():]
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copy(dst[:strLen], *t)
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}
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// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
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func (t *Type13Dynamic) UnmarshalBytes(src []byte) {
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var strLen primitive.Uint32
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strLen.UnmarshalBytes(src)
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src = src[strLen.SizeBytes():]
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*t = Type13Dynamic(src[:strLen])
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}
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