mirror of
https://github.com/ethereum/go-ethereum.git
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more clear
Signed-off-by: jsvisa <delweng@gmail.com>
This commit is contained in:
parent
dc12b75db6
commit
fe7ae65985
1 changed files with 7 additions and 5 deletions
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@ -380,9 +380,12 @@ func (b *blockWriter) full() bool {
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//
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// This function is safe to be called multiple times.
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func (b *blockWriter) finish() []byte {
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restartsLen := len(b.restarts)
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extra := restartsLen*2 + 1
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var buf []byte
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var (
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restartsLen = len(b.restarts)
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restartsOff = len(b.data)
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extra = restartsLen*2 + 1
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buf []byte
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)
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if cap(b.data)-len(b.data) >= extra {
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// Enough capacity, just reslice; data is already in place.
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@ -393,9 +396,8 @@ func (b *blockWriter) finish() []byte {
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copy(buf, b.data)
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}
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restartsOffset := len(b.data)
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for i, restart := range b.restarts {
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binary.BigEndian.PutUint16(buf[restartsOffset+2*i:], restart)
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binary.BigEndian.PutUint16(buf[restartsOff+2*i:], restart)
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}
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buf[len(buf)-1] = byte(restartsLen)
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return buf
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