mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-22 11:12:44 +01:00
517 lines
15 KiB
Go
517 lines
15 KiB
Go
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package gojay
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// DecodeFloat64 reads the next JSON-encoded value from the decoder's input (io.Reader) and stores it in the float64 pointed to by v.
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//
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// See the documentation for Unmarshal for details about the conversion of JSON into a Go value.
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func (dec *Decoder) DecodeFloat64(v *float64) error {
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if dec.isPooled == 1 {
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panic(InvalidUsagePooledDecoderError("Invalid usage of pooled decoder"))
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}
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return dec.decodeFloat64(v)
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}
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func (dec *Decoder) decodeFloat64(v *float64) error {
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch c := dec.data[dec.cursor]; c {
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case ' ', '\n', '\t', '\r', ',':
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continue
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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val, err := dec.getFloat()
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if err != nil {
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return err
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}
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*v = val
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return nil
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case '-':
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dec.cursor = dec.cursor + 1
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val, err := dec.getFloatNegative()
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if err != nil {
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return err
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}
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*v = -val
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return nil
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case 'n':
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dec.cursor++
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err := dec.assertNull()
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if err != nil {
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return err
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}
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return nil
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default:
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dec.err = dec.makeInvalidUnmarshalErr(v)
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err := dec.skipData()
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if err != nil {
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return err
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}
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return nil
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}
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}
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return dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) decodeFloat64Null(v **float64) error {
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch c := dec.data[dec.cursor]; c {
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case ' ', '\n', '\t', '\r', ',':
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continue
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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val, err := dec.getFloat()
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if err != nil {
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return err
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}
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if *v == nil {
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*v = new(float64)
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}
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**v = val
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return nil
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case '-':
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dec.cursor = dec.cursor + 1
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val, err := dec.getFloatNegative()
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if err != nil {
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return err
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}
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if *v == nil {
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*v = new(float64)
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}
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**v = -val
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return nil
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case 'n':
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dec.cursor++
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err := dec.assertNull()
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if err != nil {
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return err
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}
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return nil
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default:
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dec.err = dec.makeInvalidUnmarshalErr(v)
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err := dec.skipData()
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if err != nil {
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return err
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}
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return nil
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}
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}
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return dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) getFloatNegative() (float64, error) {
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// look for following numbers
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch dec.data[dec.cursor] {
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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return dec.getFloat()
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default:
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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}
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) getFloat() (float64, error) {
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var end = dec.cursor
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var start = dec.cursor
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// look for following numbers
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for j := dec.cursor + 1; j < dec.length || dec.read(); j++ {
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switch dec.data[j] {
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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end = j
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continue
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case '.':
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// we get part before decimal as integer
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beforeDecimal := dec.atoi64(start, end)
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// then we get part after decimal as integer
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start = j + 1
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// get number after the decimal point
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for i := j + 1; i < dec.length || dec.read(); i++ {
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c := dec.data[i]
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if isDigit(c) {
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end = i
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// multiply the before decimal point portion by 10 using bitwise
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// make sure it doesn't overflow
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if end-start < 18 {
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beforeDecimal = (beforeDecimal << 3) + (beforeDecimal << 1)
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}
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continue
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} else if (c == 'e' || c == 'E') && j < i-1 {
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// we have an exponent, convert first the value we got before the exponent
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var afterDecimal int64
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expI := end - start + 2
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// if exp is too long, it means number is too long, just truncate the number
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if expI >= len(pow10uint64) || expI < 0 {
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expI = len(pow10uint64) - 2
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afterDecimal = dec.atoi64(start, start+expI-2)
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} else {
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// then we add both integers
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// then we divide the number by the power found
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afterDecimal = dec.atoi64(start, end)
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}
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dec.cursor = i + 1
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pow := pow10uint64[expI]
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floatVal := float64(beforeDecimal+afterDecimal) / float64(pow)
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exp, err := dec.getExponent()
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if err != nil {
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return 0, err
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}
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pExp := (exp + (exp >> 31)) ^ (exp >> 31) + 1 // absolute exponent
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if pExp >= int64(len(pow10uint64)) || pExp < 0 {
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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// if exponent is negative
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if exp < 0 {
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return float64(floatVal) * (1 / float64(pow10uint64[pExp])), nil
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}
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return float64(floatVal) * float64(pow10uint64[pExp]), nil
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}
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dec.cursor = i
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break
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}
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if end >= dec.length || end < start {
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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var afterDecimal int64
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expI := end - start + 2
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// if exp is too long, it means number is too long, just truncate the number
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if expI >= len(pow10uint64) || expI < 0 {
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expI = 19
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afterDecimal = dec.atoi64(start, start+expI-2)
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} else {
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afterDecimal = dec.atoi64(start, end)
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}
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pow := pow10uint64[expI]
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// then we add both integers
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// then we divide the number by the power found
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return float64(beforeDecimal+afterDecimal) / float64(pow), nil
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case 'e', 'E':
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dec.cursor = j + 1
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// we get part before decimal as integer
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beforeDecimal := uint64(dec.atoi64(start, end))
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// get exponent
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exp, err := dec.getExponent()
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if err != nil {
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return 0, err
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}
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pExp := (exp + (exp >> 31)) ^ (exp >> 31) + 1 // abs
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if pExp >= int64(len(pow10uint64)) || pExp < 0 {
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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// if exponent is negative
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if exp < 0 {
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return float64(beforeDecimal) * (1 / float64(pow10uint64[pExp])), nil
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}
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return float64(beforeDecimal) * float64(pow10uint64[pExp]), nil
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case ' ', '\n', '\t', '\r', ',', '}', ']': // does not have decimal
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dec.cursor = j
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return float64(dec.atoi64(start, end)), nil
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}
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// invalid json we expect numbers, dot (single one), comma, or spaces
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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return float64(dec.atoi64(start, end)), nil
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}
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// DecodeFloat32 reads the next JSON-encoded value from the decoder's input (io.Reader) and stores it in the float32 pointed to by v.
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//
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// See the documentation for Unmarshal for details about the conversion of JSON into a Go value.
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func (dec *Decoder) DecodeFloat32(v *float32) error {
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if dec.isPooled == 1 {
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panic(InvalidUsagePooledDecoderError("Invalid usage of pooled decoder"))
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}
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return dec.decodeFloat32(v)
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}
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func (dec *Decoder) decodeFloat32(v *float32) error {
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch c := dec.data[dec.cursor]; c {
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case ' ', '\n', '\t', '\r', ',':
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continue
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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val, err := dec.getFloat32()
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if err != nil {
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return err
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}
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*v = val
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return nil
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case '-':
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dec.cursor = dec.cursor + 1
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val, err := dec.getFloat32Negative()
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if err != nil {
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return err
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}
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*v = -val
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return nil
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case 'n':
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dec.cursor++
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err := dec.assertNull()
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if err != nil {
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return err
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}
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return nil
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default:
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dec.err = dec.makeInvalidUnmarshalErr(v)
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err := dec.skipData()
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if err != nil {
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return err
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}
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return nil
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}
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}
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return dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) decodeFloat32Null(v **float32) error {
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch c := dec.data[dec.cursor]; c {
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case ' ', '\n', '\t', '\r', ',':
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continue
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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val, err := dec.getFloat32()
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if err != nil {
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return err
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}
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if *v == nil {
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*v = new(float32)
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}
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**v = val
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return nil
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case '-':
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dec.cursor = dec.cursor + 1
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val, err := dec.getFloat32Negative()
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if err != nil {
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return err
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}
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if *v == nil {
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*v = new(float32)
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}
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**v = -val
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return nil
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case 'n':
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dec.cursor++
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err := dec.assertNull()
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if err != nil {
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return err
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}
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return nil
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default:
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dec.err = dec.makeInvalidUnmarshalErr(v)
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err := dec.skipData()
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if err != nil {
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return err
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}
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return nil
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}
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}
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return dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) getFloat32Negative() (float32, error) {
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// look for following numbers
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for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
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switch dec.data[dec.cursor] {
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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return dec.getFloat32()
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default:
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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}
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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func (dec *Decoder) getFloat32() (float32, error) {
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var end = dec.cursor
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var start = dec.cursor
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// look for following numbers
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for j := dec.cursor + 1; j < dec.length || dec.read(); j++ {
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switch dec.data[j] {
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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end = j
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continue
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case '.':
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// we get part before decimal as integer
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beforeDecimal := dec.atoi64(start, end)
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// then we get part after decimal as integer
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start = j + 1
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// get number after the decimal point
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// multiple the before decimal point portion by 10 using bitwise
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for i := j + 1; i < dec.length || dec.read(); i++ {
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c := dec.data[i]
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if isDigit(c) {
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end = i
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// multiply the before decimal point portion by 10 using bitwise
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// make sure it desn't overflow
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if end-start < 9 {
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beforeDecimal = (beforeDecimal << 3) + (beforeDecimal << 1)
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}
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continue
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} else if (c == 'e' || c == 'E') && j < i-1 {
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// we get the number before decimal
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var afterDecimal int64
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expI := end - start + 2
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// if exp is too long, it means number is too long, just truncate the number
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if expI >= 12 || expI < 0 {
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expI = 10
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afterDecimal = dec.atoi64(start, start+expI-2)
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} else {
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afterDecimal = dec.atoi64(start, end)
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}
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dec.cursor = i + 1
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pow := pow10uint64[expI]
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// then we add both integers
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// then we divide the number by the power found
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floatVal := float32(beforeDecimal+afterDecimal) / float32(pow)
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exp, err := dec.getExponent()
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if err != nil {
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return 0, err
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}
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pExp := (exp + (exp >> 31)) ^ (exp >> 31) + 1 // abs
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if pExp >= int64(len(pow10uint64)) || pExp < 0 {
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return 0, dec.raiseInvalidJSONErr(dec.cursor)
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}
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// if exponent is negative
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if exp < 0 {
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return float32(floatVal) * (1 / float32(pow10uint64[pExp])), nil
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}
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return float32(floatVal) * float32(pow10uint64[pExp]), nil
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}
|
||
|
|
dec.cursor = i
|
||
|
|
break
|
||
|
|
}
|
||
|
|
if end >= dec.length || end < start {
|
||
|
|
return 0, dec.raiseInvalidJSONErr(dec.cursor)
|
||
|
|
}
|
||
|
|
// then we add both integers
|
||
|
|
// then we divide the number by the power found
|
||
|
|
var afterDecimal int64
|
||
|
|
expI := end - start + 2
|
||
|
|
// if exp is too long, it means number is too long, just truncate the number
|
||
|
|
if expI >= 12 || expI < 0 {
|
||
|
|
expI = 10
|
||
|
|
afterDecimal = dec.atoi64(start, start+expI-2)
|
||
|
|
} else {
|
||
|
|
// then we add both integers
|
||
|
|
// then we divide the number by the power found
|
||
|
|
afterDecimal = dec.atoi64(start, end)
|
||
|
|
}
|
||
|
|
pow := pow10uint64[expI]
|
||
|
|
return float32(beforeDecimal+afterDecimal) / float32(pow), nil
|
||
|
|
case 'e', 'E':
|
||
|
|
dec.cursor = j + 1
|
||
|
|
// we get part before decimal as integer
|
||
|
|
beforeDecimal := dec.atoi64(start, end)
|
||
|
|
// get exponent
|
||
|
|
exp, err := dec.getExponent()
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
pExp := (exp + (exp >> 31)) ^ (exp >> 31) + 1
|
||
|
|
if pExp >= int64(len(pow10uint64)) || pExp < 0 {
|
||
|
|
return 0, dec.raiseInvalidJSONErr(dec.cursor)
|
||
|
|
}
|
||
|
|
// if exponent is negative
|
||
|
|
if exp < 0 {
|
||
|
|
return float32(beforeDecimal) * (1 / float32(pow10uint64[pExp])), nil
|
||
|
|
}
|
||
|
|
return float32(beforeDecimal) * float32(pow10uint64[pExp]), nil
|
||
|
|
case ' ', '\n', '\t', '\r', ',', '}', ']': // does not have decimal
|
||
|
|
dec.cursor = j
|
||
|
|
return float32(dec.atoi64(start, end)), nil
|
||
|
|
}
|
||
|
|
// invalid json we expect numbers, dot (single one), comma, or spaces
|
||
|
|
return 0, dec.raiseInvalidJSONErr(dec.cursor)
|
||
|
|
}
|
||
|
|
return float32(dec.atoi64(start, end)), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add Values functions
|
||
|
|
|
||
|
|
// AddFloat decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) AddFloat(v *float64) error {
|
||
|
|
return dec.Float64(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// AddFloatNull decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
// If a `null` is encountered, gojay does not change the value of the pointer.
|
||
|
|
func (dec *Decoder) AddFloatNull(v **float64) error {
|
||
|
|
return dec.Float64Null(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// AddFloat64 decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) AddFloat64(v *float64) error {
|
||
|
|
return dec.Float64(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// AddFloat64Null decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
// If a `null` is encountered, gojay does not change the value of the pointer.
|
||
|
|
func (dec *Decoder) AddFloat64Null(v **float64) error {
|
||
|
|
return dec.Float64Null(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// AddFloat32 decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) AddFloat32(v *float32) error {
|
||
|
|
return dec.Float32(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// AddFloat32Null decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
// If a `null` is encountered, gojay does not change the value of the pointer.
|
||
|
|
func (dec *Decoder) AddFloat32Null(v **float32) error {
|
||
|
|
return dec.Float32Null(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Float decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) Float(v *float64) error {
|
||
|
|
return dec.Float64(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// FloatNull decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) FloatNull(v **float64) error {
|
||
|
|
return dec.Float64Null(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Float64 decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) Float64(v *float64) error {
|
||
|
|
err := dec.decodeFloat64(v)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dec.called |= 1
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Float64Null decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) Float64Null(v **float64) error {
|
||
|
|
err := dec.decodeFloat64Null(v)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dec.called |= 1
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Float32 decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) Float32(v *float32) error {
|
||
|
|
err := dec.decodeFloat32(v)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dec.called |= 1
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Float32Null decodes the JSON value within an object or an array to a *float64.
|
||
|
|
// If next key value overflows float64, an InvalidUnmarshalError error will be returned.
|
||
|
|
func (dec *Decoder) Float32Null(v **float32) error {
|
||
|
|
err := dec.decodeFloat32Null(v)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dec.called |= 1
|
||
|
|
return nil
|
||
|
|
}
|