go/json-iterator
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use iterator from cache for any

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This commit is contained in:
Tao Wen
2017-06-17 21:10:08 +08:00
parent 50e4910c63
commit 55fc498d27
8 changed files with 82 additions and 121 deletions
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41
feature_any_array.go
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@ -8,8 +8,8 @@ import (
type arrayLazyAny struct {
baseAny
cfg *frozenConfig
buf []byte
iter *Iterator
err error
cache []Any
remaining []byte
@ -19,16 +19,6 @@ func (any *arrayLazyAny) ValueType() ValueType {
return Array
}
func (any *arrayLazyAny) Parse() *Iterator {
iter := any.iter
if iter == nil {
iter = NewIterator(ConfigDefault)
any.iter = iter
}
iter.ResetBytes(any.remaining)
return iter
}
func (any *arrayLazyAny) fillCacheUntil(target int) Any {
if any.remaining == nil {
if target >= len(any.cache) {
@ -43,13 +33,14 @@ func (any *arrayLazyAny) fillCacheUntil(target int) Any {
if target < i {
return any.cache[target]
}
iter := any.Parse()
iter := any.cfg.BorrowIterator(any.remaining)
defer any.cfg.ReturnIterator(iter)
if len(any.remaining) == len(any.buf) {
iter.head++
c := iter.nextToken()
if c != ']' {
iter.unreadByte()
element := iter.readAny(iter)
element := iter.readAny()
any.cache = append(any.cache, element)
if target == 0 {
any.remaining = iter.buf[iter.head:]
@ -64,7 +55,7 @@ func (any *arrayLazyAny) fillCacheUntil(target int) Any {
}
}
for iter.nextToken() == ',' {
element := iter.readAny(iter)
element := iter.readAny()
any.cache = append(any.cache, element)
if i == target {
any.remaining = iter.buf[iter.head:]
@ -85,13 +76,14 @@ func (any *arrayLazyAny) fillCache() {
if any.cache == nil {
any.cache = make([]Any, 0, 8)
}
iter := any.Parse()
iter := any.cfg.BorrowIterator(any.remaining)
defer any.cfg.ReturnIterator(iter)
if len(any.remaining) == len(any.buf) {
iter.head++
c := iter.nextToken()
if c != ']' {
iter.unreadByte()
any.cache = append(any.cache, iter.readAny(iter))
any.cache = append(any.cache, iter.readAny())
} else {
any.remaining = nil
any.err = iter.Error
@ -99,7 +91,7 @@ func (any *arrayLazyAny) fillCache() {
}
}
for iter.nextToken() == ',' {
any.cache = append(any.cache, iter.readAny(iter))
any.cache = append(any.cache, iter.readAny())
}
any.remaining = nil
any.err = iter.Error
@ -254,12 +246,13 @@ func (any *arrayLazyAny) IterateArray() (func() (Any, bool), bool) {
}
remaining := any.remaining
if len(remaining) == len(any.buf) {
iter := any.Parse()
iter := any.cfg.BorrowIterator(any.remaining)
defer any.cfg.ReturnIterator(iter)
iter.head++
c := iter.nextToken()
if c != ']' {
iter.unreadByte()
v := iter.readAny(iter)
v := iter.readAny()
any.cache = append(any.cache, v)
remaining = iter.buf[iter.head:]
any.remaining = remaining
@ -285,15 +278,11 @@ func (any *arrayLazyAny) IterateArray() (func() (Any, bool), bool) {
return value, true
} else {
// read from buffer
iter := any.iter
if iter == nil {
iter = NewIterator(ConfigDefault)
any.iter = iter
}
iter.ResetBytes(remaining)
iter := any.cfg.BorrowIterator(any.remaining)
defer any.cfg.ReturnIterator(iter)
c := iter.nextToken()
if c == ',' {
nextValue = iter.readAny(iter)
nextValue = iter.readAny()
any.cache = append(any.cache, nextValue)
remaining = iter.buf[iter.head:]
any.remaining = remaining