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git-subtree-dir: lib/protocol git-subtree-mainline:5ecb8bdd8agit-subtree-split:f91191218b
44 lines
1.0 KiB
Go
44 lines
1.0 KiB
Go
// Copyright (C) 2015 The Protocol Authors.
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package protocol
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import "github.com/calmh/xdr"
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// This stuff is hacked up manually because genxdr doesn't support 'type
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// Vector []Counter' declarations and it was tricky when I tried to add it...
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type xdrWriter interface {
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WriteUint32(uint32) (int, error)
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WriteUint64(uint64) (int, error)
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}
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type xdrReader interface {
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ReadUint32() uint32
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ReadUint64() uint64
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}
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// EncodeXDRInto encodes the vector as an XDR object into the given XDR
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// encoder.
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func (v Vector) EncodeXDRInto(w xdrWriter) (int, error) {
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w.WriteUint32(uint32(len(v)))
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for i := range v {
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w.WriteUint64(v[i].ID)
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w.WriteUint64(v[i].Value)
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}
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return 4 + 16*len(v), nil
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}
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// DecodeXDRFrom decodes the XDR objects from the given reader into itself.
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func (v *Vector) DecodeXDRFrom(r xdrReader) error {
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l := int(r.ReadUint32())
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if l > 1e6 {
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return xdr.ElementSizeExceeded("number of counters", l, 1e6)
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}
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n := make(Vector, l)
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for i := range n {
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n[i].ID = r.ReadUint64()
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n[i].Value = r.ReadUint64()
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}
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*v = n
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return nil
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}
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