diff options
Diffstat (limited to 'vendor/github.com/json-iterator/go/feature_stream_int.go')
| -rw-r--r-- | vendor/github.com/json-iterator/go/feature_stream_int.go | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/vendor/github.com/json-iterator/go/feature_stream_int.go b/vendor/github.com/json-iterator/go/feature_stream_int.go new file mode 100644 index 000000000..7cfd522c1 --- /dev/null +++ b/vendor/github.com/json-iterator/go/feature_stream_int.go @@ -0,0 +1,320 @@ +package jsoniter + +var digits []uint32 + +func init() { + digits = make([]uint32, 1000) + for i := uint32(0); i < 1000; i++ { + digits[i] = (((i / 100) + '0') << 16) + ((((i / 10) % 10) + '0') << 8) + i%10 + '0' + if i < 10 { + digits[i] += 2 << 24 + } else if i < 100 { + digits[i] += 1 << 24 + } + } +} + +func writeFirstBuf(buf []byte, v uint32, n int) int { + start := v >> 24 + if start == 0 { + buf[n] = byte(v >> 16) + n++ + buf[n] = byte(v >> 8) + n++ + } else if start == 1 { + buf[n] = byte(v >> 8) + n++ + } + buf[n] = byte(v) + n++ + return n +} + +func writeBuf(buf []byte, v uint32, n int) { + buf[n] = byte(v >> 16) + buf[n+1] = byte(v >> 8) + buf[n+2] = byte(v) +} + +// WriteUint8 write uint8 to stream +func (stream *Stream) WriteUint8(val uint8) { + stream.ensure(3) + stream.n = writeFirstBuf(stream.buf, digits[val], stream.n) +} + +// WriteInt8 write int8 to stream +func (stream *Stream) WriteInt8(nval int8) { + stream.ensure(4) + n := stream.n + var val uint8 + if nval < 0 { + val = uint8(-nval) + stream.buf[n] = '-' + n++ + } else { + val = uint8(nval) + } + stream.n = writeFirstBuf(stream.buf, digits[val], n) +} + +// WriteUint16 write uint16 to stream +func (stream *Stream) WriteUint16(val uint16) { + stream.ensure(5) + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], stream.n) + return + } + r1 := val - q1*1000 + n := writeFirstBuf(stream.buf, digits[q1], stream.n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return +} + +// WriteInt16 write int16 to stream +func (stream *Stream) WriteInt16(nval int16) { + stream.ensure(6) + n := stream.n + var val uint16 + if nval < 0 { + val = uint16(-nval) + stream.buf[n] = '-' + n++ + } else { + val = uint16(nval) + } + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], n) + return + } + r1 := val - q1*1000 + n = writeFirstBuf(stream.buf, digits[q1], n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return +} + +// WriteUint32 write uint32 to stream +func (stream *Stream) WriteUint32(val uint32) { + stream.ensure(10) + n := stream.n + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], n) + return + } + r1 := val - q1*1000 + q2 := q1 / 1000 + if q2 == 0 { + n := writeFirstBuf(stream.buf, digits[q1], n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return + } + r2 := q1 - q2*1000 + q3 := q2 / 1000 + if q3 == 0 { + n = writeFirstBuf(stream.buf, digits[q2], n) + } else { + r3 := q2 - q3*1000 + stream.buf[n] = byte(q3 + '0') + n++ + writeBuf(stream.buf, digits[r3], n) + n += 3 + } + writeBuf(stream.buf, digits[r2], n) + writeBuf(stream.buf, digits[r1], n+3) + stream.n = n + 6 +} + +// WriteInt32 write int32 to stream +func (stream *Stream) WriteInt32(nval int32) { + stream.ensure(11) + n := stream.n + var val uint32 + if nval < 0 { + val = uint32(-nval) + stream.buf[n] = '-' + n++ + } else { + val = uint32(nval) + } + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], n) + return + } + r1 := val - q1*1000 + q2 := q1 / 1000 + if q2 == 0 { + n := writeFirstBuf(stream.buf, digits[q1], n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return + } + r2 := q1 - q2*1000 + q3 := q2 / 1000 + if q3 == 0 { + n = writeFirstBuf(stream.buf, digits[q2], n) + } else { + r3 := q2 - q3*1000 + stream.buf[n] = byte(q3 + '0') + n++ + writeBuf(stream.buf, digits[r3], n) + n += 3 + } + writeBuf(stream.buf, digits[r2], n) + writeBuf(stream.buf, digits[r1], n+3) + stream.n = n + 6 +} + +// WriteUint64 write uint64 to stream +func (stream *Stream) WriteUint64(val uint64) { + stream.ensure(20) + n := stream.n + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], n) + return + } + r1 := val - q1*1000 + q2 := q1 / 1000 + if q2 == 0 { + n := writeFirstBuf(stream.buf, digits[q1], n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return + } + r2 := q1 - q2*1000 + q3 := q2 / 1000 + if q3 == 0 { + n = writeFirstBuf(stream.buf, digits[q2], n) + writeBuf(stream.buf, digits[r2], n) + writeBuf(stream.buf, digits[r1], n+3) + stream.n = n + 6 + return + } + r3 := q2 - q3*1000 + q4 := q3 / 1000 + if q4 == 0 { + n = writeFirstBuf(stream.buf, digits[q3], n) + writeBuf(stream.buf, digits[r3], n) + writeBuf(stream.buf, digits[r2], n+3) + writeBuf(stream.buf, digits[r1], n+6) + stream.n = n + 9 + return + } + r4 := q3 - q4*1000 + q5 := q4 / 1000 + if q5 == 0 { + n = writeFirstBuf(stream.buf, digits[q4], n) + writeBuf(stream.buf, digits[r4], n) + writeBuf(stream.buf, digits[r3], n+3) + writeBuf(stream.buf, digits[r2], n+6) + writeBuf(stream.buf, digits[r1], n+9) + stream.n = n + 12 + return + } + r5 := q4 - q5*1000 + q6 := q5 / 1000 + if q6 == 0 { + n = writeFirstBuf(stream.buf, digits[q5], n) + } else { + n = writeFirstBuf(stream.buf, digits[q6], n) + r6 := q5 - q6*1000 + writeBuf(stream.buf, digits[r6], n) + n += 3 + } + writeBuf(stream.buf, digits[r5], n) + writeBuf(stream.buf, digits[r4], n+3) + writeBuf(stream.buf, digits[r3], n+6) + writeBuf(stream.buf, digits[r2], n+9) + writeBuf(stream.buf, digits[r1], n+12) + stream.n = n + 15 +} + +// WriteInt64 write int64 to stream +func (stream *Stream) WriteInt64(nval int64) { + stream.ensure(20) + n := stream.n + var val uint64 + if nval < 0 { + val = uint64(-nval) + stream.buf[n] = '-' + n++ + } else { + val = uint64(nval) + } + q1 := val / 1000 + if q1 == 0 { + stream.n = writeFirstBuf(stream.buf, digits[val], n) + return + } + r1 := val - q1*1000 + q2 := q1 / 1000 + if q2 == 0 { + n := writeFirstBuf(stream.buf, digits[q1], n) + writeBuf(stream.buf, digits[r1], n) + stream.n = n + 3 + return + } + r2 := q1 - q2*1000 + q3 := q2 / 1000 + if q3 == 0 { + n = writeFirstBuf(stream.buf, digits[q2], n) + writeBuf(stream.buf, digits[r2], n) + writeBuf(stream.buf, digits[r1], n+3) + stream.n = n + 6 + return + } + r3 := q2 - q3*1000 + q4 := q3 / 1000 + if q4 == 0 { + n = writeFirstBuf(stream.buf, digits[q3], n) + writeBuf(stream.buf, digits[r3], n) + writeBuf(stream.buf, digits[r2], n+3) + writeBuf(stream.buf, digits[r1], n+6) + stream.n = n + 9 + return + } + r4 := q3 - q4*1000 + q5 := q4 / 1000 + if q5 == 0 { + n = writeFirstBuf(stream.buf, digits[q4], n) + writeBuf(stream.buf, digits[r4], n) + writeBuf(stream.buf, digits[r3], n+3) + writeBuf(stream.buf, digits[r2], n+6) + writeBuf(stream.buf, digits[r1], n+9) + stream.n = n + 12 + return + } + r5 := q4 - q5*1000 + q6 := q5 / 1000 + if q6 == 0 { + n = writeFirstBuf(stream.buf, digits[q5], n) + } else { + stream.buf[n] = byte(q6 + '0') + n++ + r6 := q5 - q6*1000 + writeBuf(stream.buf, digits[r6], n) + n += 3 + } + writeBuf(stream.buf, digits[r5], n) + writeBuf(stream.buf, digits[r4], n+3) + writeBuf(stream.buf, digits[r3], n+6) + writeBuf(stream.buf, digits[r2], n+9) + writeBuf(stream.buf, digits[r1], n+12) + stream.n = n + 15 +} + +// WriteInt write int to stream +func (stream *Stream) WriteInt(val int) { + stream.WriteInt64(int64(val)) +} + +// WriteUint write uint to stream +func (stream *Stream) WriteUint(val uint) { + stream.WriteUint64(uint64(val)) +} |