migrate go version to 1.17 (#203)

* migrate go version to 1.17

* update contributing

1 files changed, 280 insertions, 0 deletions

diff --git a/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go b/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go
new file mode 100644
index 000000000..1ef287782
--- /dev/null
+++ b/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go
@@ -0,0 +1,280 @@
+package decoder
+
+import (
+	"bytes"
+	"encoding"
+	"unicode"
+	"unicode/utf16"
+	"unicode/utf8"
+	"unsafe"
+
+	"github.com/goccy/go-json/internal/errors"
+	"github.com/goccy/go-json/internal/runtime"
+)
+
+type unmarshalTextDecoder struct {
+	typ        *runtime.Type
+	structName string
+	fieldName  string
+}
+
+func newUnmarshalTextDecoder(typ *runtime.Type, structName, fieldName string) *unmarshalTextDecoder {
+	return &unmarshalTextDecoder{
+		typ:        typ,
+		structName: structName,
+		fieldName:  fieldName,
+	}
+}
+
+func (d *unmarshalTextDecoder) annotateError(cursor int64, err error) {
+	switch e := err.(type) {
+	case *errors.UnmarshalTypeError:
+		e.Struct = d.structName
+		e.Field = d.fieldName
+	case *errors.SyntaxError:
+		e.Offset = cursor
+	}
+}
+
+var (
+	nullbytes = []byte(`null`)
+)
+
+func (d *unmarshalTextDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) error {
+	s.skipWhiteSpace()
+	start := s.cursor
+	if err := s.skipValue(depth); err != nil {
+		return err
+	}
+	src := s.buf[start:s.cursor]
+	if len(src) > 0 {
+		switch src[0] {
+		case '[':
+			return &errors.UnmarshalTypeError{
+				Value:  "array",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: s.totalOffset(),
+			}
+		case '{':
+			return &errors.UnmarshalTypeError{
+				Value:  "object",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: s.totalOffset(),
+			}
+		case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			return &errors.UnmarshalTypeError{
+				Value:  "number",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: s.totalOffset(),
+			}
+		case 'n':
+			if bytes.Equal(src, nullbytes) {
+				*(*unsafe.Pointer)(p) = nil
+				return nil
+			}
+		}
+	}
+	dst := make([]byte, len(src))
+	copy(dst, src)
+
+	if b, ok := unquoteBytes(dst); ok {
+		dst = b
+	}
+	v := *(*interface{})(unsafe.Pointer(&emptyInterface{
+		typ: d.typ,
+		ptr: p,
+	}))
+	if err := v.(encoding.TextUnmarshaler).UnmarshalText(dst); err != nil {
+		d.annotateError(s.cursor, err)
+		return err
+	}
+	return nil
+}
+
+func (d *unmarshalTextDecoder) Decode(ctx *RuntimeContext, cursor, depth int64, p unsafe.Pointer) (int64, error) {
+	buf := ctx.Buf
+	cursor = skipWhiteSpace(buf, cursor)
+	start := cursor
+	end, err := skipValue(buf, cursor, depth)
+	if err != nil {
+		return 0, err
+	}
+	src := buf[start:end]
+	if len(src) > 0 {
+		switch src[0] {
+		case '[':
+			return 0, &errors.UnmarshalTypeError{
+				Value:  "array",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: start,
+			}
+		case '{':
+			return 0, &errors.UnmarshalTypeError{
+				Value:  "object",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: start,
+			}
+		case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			return 0, &errors.UnmarshalTypeError{
+				Value:  "number",
+				Type:   runtime.RType2Type(d.typ),
+				Offset: start,
+			}
+		case 'n':
+			if bytes.Equal(src, nullbytes) {
+				*(*unsafe.Pointer)(p) = nil
+				return end, nil
+			}
+		}
+	}
+
+	if s, ok := unquoteBytes(src); ok {
+		src = s
+	}
+	v := *(*interface{})(unsafe.Pointer(&emptyInterface{
+		typ: d.typ,
+		ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
+	}))
+	if err := v.(encoding.TextUnmarshaler).UnmarshalText(src); err != nil {
+		d.annotateError(cursor, err)
+		return 0, err
+	}
+	return end, nil
+}
+
+func unquoteBytes(s []byte) (t []byte, ok bool) {
+	length := len(s)
+	if length < 2 || s[0] != '"' || s[length-1] != '"' {
+		return
+	}
+	s = s[1 : length-1]
+	length -= 2
+
+	// Check for unusual characters. If there are none,
+	// then no unquoting is needed, so return a slice of the
+	// original bytes.
+	r := 0
+	for r < length {
+		c := s[r]
+		if c == '\\' || c == '"' || c < ' ' {
+			break
+		}
+		if c < utf8.RuneSelf {
+			r++
+			continue
+		}
+		rr, size := utf8.DecodeRune(s[r:])
+		if rr == utf8.RuneError && size == 1 {
+			break
+		}
+		r += size
+	}
+	if r == length {
+		return s, true
+	}
+
+	b := make([]byte, length+2*utf8.UTFMax)
+	w := copy(b, s[0:r])
+	for r < length {
+		// Out of room? Can only happen if s is full of
+		// malformed UTF-8 and we're replacing each
+		// byte with RuneError.
+		if w >= len(b)-2*utf8.UTFMax {
+			nb := make([]byte, (len(b)+utf8.UTFMax)*2)
+			copy(nb, b[0:w])
+			b = nb
+		}
+		switch c := s[r]; {
+		case c == '\\':
+			r++
+			if r >= length {
+				return
+			}
+			switch s[r] {
+			default:
+				return
+			case '"', '\\', '/', '\'':
+				b[w] = s[r]
+				r++
+				w++
+			case 'b':
+				b[w] = '\b'
+				r++
+				w++
+			case 'f':
+				b[w] = '\f'
+				r++
+				w++
+			case 'n':
+				b[w] = '\n'
+				r++
+				w++
+			case 'r':
+				b[w] = '\r'
+				r++
+				w++
+			case 't':
+				b[w] = '\t'
+				r++
+				w++
+			case 'u':
+				r--
+				rr := getu4(s[r:])
+				if rr < 0 {
+					return
+				}
+				r += 6
+				if utf16.IsSurrogate(rr) {
+					rr1 := getu4(s[r:])
+					if dec := utf16.DecodeRune(rr, rr1); dec != unicode.ReplacementChar {
+						// A valid pair; consume.
+						r += 6
+						w += utf8.EncodeRune(b[w:], dec)
+						break
+					}
+					// Invalid surrogate; fall back to replacement rune.
+					rr = unicode.ReplacementChar
+				}
+				w += utf8.EncodeRune(b[w:], rr)
+			}
+
+		// Quote, control characters are invalid.
+		case c == '"', c < ' ':
+			return
+
+		// ASCII
+		case c < utf8.RuneSelf:
+			b[w] = c
+			r++
+			w++
+
+		// Coerce to well-formed UTF-8.
+		default:
+			rr, size := utf8.DecodeRune(s[r:])
+			r += size
+			w += utf8.EncodeRune(b[w:], rr)
+		}
+	}
+	return b[0:w], true
+}
+
+func getu4(s []byte) rune {
+	if len(s) < 6 || s[0] != '\\' || s[1] != 'u' {
+		return -1
+	}
+	var r rune
+	for _, c := range s[2:6] {
+		switch {
+		case '0' <= c && c <= '9':
+			c = c - '0'
+		case 'a' <= c && c <= 'f':
+			c = c - 'a' + 10
+		case 'A' <= c && c <= 'F':
+			c = c - 'A' + 10
+		default:
+			return -1
+		}
+		r = r*16 + rune(c)
+	}
+	return r
+}