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authorWim <wim@42.be>2021-10-16 23:11:32 +0200
committerWim <wim@42.be>2021-10-16 23:23:24 +0200
commit20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8 (patch)
tree230edca06449a8d1755f08aabf45a03e07e6f17c /vendor/github.com/json-iterator/go/iter_int.go
parent57fce93af7f64f025cec6f3ed6088163086bc9fe (diff)
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Update vendor
Diffstat (limited to 'vendor/github.com/json-iterator/go/iter_int.go')
-rw-r--r--vendor/github.com/json-iterator/go/iter_int.go346
1 files changed, 346 insertions, 0 deletions
diff --git a/vendor/github.com/json-iterator/go/iter_int.go b/vendor/github.com/json-iterator/go/iter_int.go
new file mode 100644
index 00000000..d786a89f
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_int.go
@@ -0,0 +1,346 @@
+package jsoniter
+
+import (
+ "math"
+ "strconv"
+)
+
+var intDigits []int8
+
+const uint32SafeToMultiply10 = uint32(0xffffffff)/10 - 1
+const uint64SafeToMultiple10 = uint64(0xffffffffffffffff)/10 - 1
+const maxFloat64 = 1<<53 - 1
+
+func init() {
+ intDigits = make([]int8, 256)
+ for i := 0; i < len(intDigits); i++ {
+ intDigits[i] = invalidCharForNumber
+ }
+ for i := int8('0'); i <= int8('9'); i++ {
+ intDigits[i] = i - int8('0')
+ }
+}
+
+// ReadUint read uint
+func (iter *Iterator) ReadUint() uint {
+ if strconv.IntSize == 32 {
+ return uint(iter.ReadUint32())
+ }
+ return uint(iter.ReadUint64())
+}
+
+// ReadInt read int
+func (iter *Iterator) ReadInt() int {
+ if strconv.IntSize == 32 {
+ return int(iter.ReadInt32())
+ }
+ return int(iter.ReadInt64())
+}
+
+// ReadInt8 read int8
+func (iter *Iterator) ReadInt8() (ret int8) {
+ c := iter.nextToken()
+ if c == '-' {
+ val := iter.readUint32(iter.readByte())
+ if val > math.MaxInt8+1 {
+ iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return -int8(val)
+ }
+ val := iter.readUint32(c)
+ if val > math.MaxInt8 {
+ iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return int8(val)
+}
+
+// ReadUint8 read uint8
+func (iter *Iterator) ReadUint8() (ret uint8) {
+ val := iter.readUint32(iter.nextToken())
+ if val > math.MaxUint8 {
+ iter.ReportError("ReadUint8", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return uint8(val)
+}
+
+// ReadInt16 read int16
+func (iter *Iterator) ReadInt16() (ret int16) {
+ c := iter.nextToken()
+ if c == '-' {
+ val := iter.readUint32(iter.readByte())
+ if val > math.MaxInt16+1 {
+ iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return -int16(val)
+ }
+ val := iter.readUint32(c)
+ if val > math.MaxInt16 {
+ iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return int16(val)
+}
+
+// ReadUint16 read uint16
+func (iter *Iterator) ReadUint16() (ret uint16) {
+ val := iter.readUint32(iter.nextToken())
+ if val > math.MaxUint16 {
+ iter.ReportError("ReadUint16", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return uint16(val)
+}
+
+// ReadInt32 read int32
+func (iter *Iterator) ReadInt32() (ret int32) {
+ c := iter.nextToken()
+ if c == '-' {
+ val := iter.readUint32(iter.readByte())
+ if val > math.MaxInt32+1 {
+ iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return -int32(val)
+ }
+ val := iter.readUint32(c)
+ if val > math.MaxInt32 {
+ iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+ return
+ }
+ return int32(val)
+}
+
+// ReadUint32 read uint32
+func (iter *Iterator) ReadUint32() (ret uint32) {
+ return iter.readUint32(iter.nextToken())
+}
+
+func (iter *Iterator) readUint32(c byte) (ret uint32) {
+ ind := intDigits[c]
+ if ind == 0 {
+ iter.assertInteger()
+ return 0 // single zero
+ }
+ if ind == invalidCharForNumber {
+ iter.ReportError("readUint32", "unexpected character: "+string([]byte{byte(ind)}))
+ return
+ }
+ value := uint32(ind)
+ if iter.tail-iter.head > 10 {
+ i := iter.head
+ ind2 := intDigits[iter.buf[i]]
+ if ind2 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value
+ }
+ i++
+ ind3 := intDigits[iter.buf[i]]
+ if ind3 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ 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
+ iter.assertInteger()
+ return value*100 + uint32(ind2)*10 + uint32(ind3)
+ }
+ i++
+ ind5 := intDigits[iter.buf[i]]
+ if ind5 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*1000 + uint32(ind2)*100 + uint32(ind3)*10 + uint32(ind4)
+ }
+ i++
+ ind6 := intDigits[iter.buf[i]]
+ if ind6 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ 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
+ iter.assertInteger()
+ 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
+ iter.assertInteger()
+ 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 {
+ iter.assertInteger()
+ return value
+ }
+ }
+ for {
+ for i := iter.head; i < iter.tail; i++ {
+ ind = intDigits[iter.buf[i]]
+ if ind == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value
+ }
+ if value > uint32SafeToMultiply10 {
+ value2 := (value << 3) + (value << 1) + uint32(ind)
+ if value2 < value {
+ iter.ReportError("readUint32", "overflow")
+ return
+ }
+ value = value2
+ continue
+ }
+ value = (value << 3) + (value << 1) + uint32(ind)
+ }
+ if !iter.loadMore() {
+ iter.assertInteger()
+ return value
+ }
+ }
+}
+
+// ReadInt64 read int64
+func (iter *Iterator) ReadInt64() (ret int64) {
+ c := iter.nextToken()
+ if c == '-' {
+ val := iter.readUint64(iter.readByte())
+ if val > math.MaxInt64+1 {
+ iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+ return
+ }
+ return -int64(val)
+ }
+ val := iter.readUint64(c)
+ if val > math.MaxInt64 {
+ iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+ return
+ }
+ return int64(val)
+}
+
+// ReadUint64 read uint64
+func (iter *Iterator) ReadUint64() uint64 {
+ return iter.readUint64(iter.nextToken())
+}
+
+func (iter *Iterator) readUint64(c byte) (ret uint64) {
+ ind := intDigits[c]
+ if ind == 0 {
+ iter.assertInteger()
+ return 0 // single zero
+ }
+ if ind == invalidCharForNumber {
+ iter.ReportError("readUint64", "unexpected character: "+string([]byte{byte(ind)}))
+ return
+ }
+ value := uint64(ind)
+ if iter.tail-iter.head > 10 {
+ i := iter.head
+ ind2 := intDigits[iter.buf[i]]
+ if ind2 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value
+ }
+ i++
+ ind3 := intDigits[iter.buf[i]]
+ if ind3 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*10 + uint64(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
+ iter.assertInteger()
+ return value*100 + uint64(ind2)*10 + uint64(ind3)
+ }
+ i++
+ ind5 := intDigits[iter.buf[i]]
+ if ind5 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*1000 + uint64(ind2)*100 + uint64(ind3)*10 + uint64(ind4)
+ }
+ i++
+ ind6 := intDigits[iter.buf[i]]
+ if ind6 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*10000 + uint64(ind2)*1000 + uint64(ind3)*100 + uint64(ind4)*10 + uint64(ind5)
+ }
+ i++
+ ind7 := intDigits[iter.buf[i]]
+ if ind7 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*100000 + uint64(ind2)*10000 + uint64(ind3)*1000 + uint64(ind4)*100 + uint64(ind5)*10 + uint64(ind6)
+ }
+ i++
+ ind8 := intDigits[iter.buf[i]]
+ if ind8 == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value*1000000 + uint64(ind2)*100000 + uint64(ind3)*10000 + uint64(ind4)*1000 + uint64(ind5)*100 + uint64(ind6)*10 + uint64(ind7)
+ }
+ i++
+ ind9 := intDigits[iter.buf[i]]
+ value = value*10000000 + uint64(ind2)*1000000 + uint64(ind3)*100000 + uint64(ind4)*10000 + uint64(ind5)*1000 + uint64(ind6)*100 + uint64(ind7)*10 + uint64(ind8)
+ iter.head = i
+ if ind9 == invalidCharForNumber {
+ iter.assertInteger()
+ return value
+ }
+ }
+ for {
+ for i := iter.head; i < iter.tail; i++ {
+ ind = intDigits[iter.buf[i]]
+ if ind == invalidCharForNumber {
+ iter.head = i
+ iter.assertInteger()
+ return value
+ }
+ if value > uint64SafeToMultiple10 {
+ value2 := (value << 3) + (value << 1) + uint64(ind)
+ if value2 < value {
+ iter.ReportError("readUint64", "overflow")
+ return
+ }
+ value = value2
+ continue
+ }
+ value = (value << 3) + (value << 1) + uint64(ind)
+ }
+ if !iter.loadMore() {
+ iter.assertInteger()
+ return value
+ }
+ }
+}
+
+func (iter *Iterator) assertInteger() {
+ if iter.head < iter.tail && iter.buf[iter.head] == '.' {
+ iter.ReportError("assertInteger", "can not decode float as int")
+ }
+}