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use hash for field dispatching

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This commit is contained in:
Tao Wen
2017-02-08 13:46:28 +08:00
parent 14f696c6f5
commit da7ed7809b
4 changed files with 854 additions and 116 deletions
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53
feature_iter_int.go
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@ -122,6 +122,59 @@ func (iter *Iterator) readUint32(c byte) (ret uint32) {
return
}
value := uint32(ind)
if iter.tail - iter.head > 10 {
i := iter.head
ind2 := intDigits[iter.buf[i]]
if ind2 == invalidCharForNumber {
iter.head = i
return value
}
i++
ind3 := intDigits[iter.buf[i]]
if ind3 == invalidCharForNumber {
iter.head = i
return value * 10 + uint32(ind2)
}
//iter.head = i + 1
//value = value * 100 + uint32(ind2) * 10 + uint32(ind3)
i++
ind4 := intDigits[iter.buf[i]]
if ind4 == invalidCharForNumber {
iter.head = i
return value * 100 + uint32(ind2) * 10 + uint32(ind3)
}
i++
ind5 := intDigits[iter.buf[i]]
if ind5 == invalidCharForNumber {
iter.head = i
return value * 1000 + uint32(ind2) * 100 + uint32(ind3) * 10 + uint32(ind4)
}
i++
ind6 := intDigits[iter.buf[i]]
if ind6 == invalidCharForNumber {
iter.head = i
return value * 10000 + uint32(ind2) * 1000 + uint32(ind3) * 100 + uint32(ind4) * 10 + uint32(ind5)
}
i++
ind7 := intDigits[iter.buf[i]]
if ind7 == invalidCharForNumber {
iter.head = i
return value * 100000 + uint32(ind2) * 10000 + uint32(ind3) * 1000 + uint32(ind4) * 100 + uint32(ind5) * 10 + uint32(ind6)
}
i++
ind8 := intDigits[iter.buf[i]]
if ind8 == invalidCharForNumber {
iter.head = i
return value * 1000000 + uint32(ind2) * 100000 + uint32(ind3) * 10000 + uint32(ind4) * 1000 + uint32(ind5) * 100 + uint32(ind6) * 10 + uint32(ind7)
}
i++
ind9 := intDigits[iter.buf[i]]
value = value * 10000000 + uint32(ind2) * 1000000 + uint32(ind3) * 100000 + uint32(ind4) * 10000 + uint32(ind5) * 1000 + uint32(ind6) * 100 + uint32(ind7) * 10 + uint32(ind8)
iter.head = i
if ind9 == invalidCharForNumber {
return value
}
}
for {
for i := iter.head; i < iter.tail; i++ {
ind = intDigits[iter.buf[i]]