diff options
Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/encoder/compact.go')
| -rw-r--r-- | vendor/github.com/goccy/go-json/internal/encoder/compact.go | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/encoder/compact.go b/vendor/github.com/goccy/go-json/internal/encoder/compact.go deleted file mode 100644 index 0eb9545d8..000000000 --- a/vendor/github.com/goccy/go-json/internal/encoder/compact.go +++ /dev/null @@ -1,286 +0,0 @@ -package encoder - -import ( - "bytes" - "fmt" - "strconv" - "unsafe" - - "github.com/goccy/go-json/internal/errors" -) - -var ( - isWhiteSpace = [256]bool{ - ' ': true, - '\n': true, - '\t': true, - '\r': true, - } - isHTMLEscapeChar = [256]bool{ - '<': true, - '>': true, - '&': true, - } - nul = byte('\000') -) - -func Compact(buf *bytes.Buffer, src []byte, escape bool) error { - if len(src) == 0 { - return errors.ErrUnexpectedEndOfJSON("", 0) - } - buf.Grow(len(src)) - dst := buf.Bytes() - - ctx := TakeRuntimeContext() - ctxBuf := ctx.Buf[:0] - ctxBuf = append(append(ctxBuf, src...), nul) - ctx.Buf = ctxBuf - - if err := compactAndWrite(buf, dst, ctxBuf, escape); err != nil { - ReleaseRuntimeContext(ctx) - return err - } - ReleaseRuntimeContext(ctx) - return nil -} - -func compactAndWrite(buf *bytes.Buffer, dst []byte, src []byte, escape bool) error { - dst, err := compact(dst, src, escape) - if err != nil { - return err - } - if _, err := buf.Write(dst); err != nil { - return err - } - return nil -} - -func compact(dst, src []byte, escape bool) ([]byte, error) { - buf, cursor, err := compactValue(dst, src, 0, escape) - if err != nil { - return nil, err - } - if err := validateEndBuf(src, cursor); err != nil { - return nil, err - } - return buf, nil -} - -func validateEndBuf(src []byte, cursor int64) error { - for { - switch src[cursor] { - case ' ', '\t', '\n', '\r': - cursor++ - continue - case nul: - return nil - } - return errors.ErrSyntax( - fmt.Sprintf("invalid character '%c' after top-level value", src[cursor]), - cursor+1, - ) - } -} - -func skipWhiteSpace(buf []byte, cursor int64) int64 { -LOOP: - if isWhiteSpace[buf[cursor]] { - cursor++ - goto LOOP - } - return cursor -} - -func compactValue(dst, src []byte, cursor int64, escape bool) ([]byte, int64, error) { - for { - switch src[cursor] { - case ' ', '\t', '\n', '\r': - cursor++ - continue - case '{': - return compactObject(dst, src, cursor, escape) - case '}': - return nil, 0, errors.ErrSyntax("unexpected character '}'", cursor) - case '[': - return compactArray(dst, src, cursor, escape) - case ']': - return nil, 0, errors.ErrSyntax("unexpected character ']'", cursor) - case '"': - return compactString(dst, src, cursor, escape) - case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': - return compactNumber(dst, src, cursor) - case 't': - return compactTrue(dst, src, cursor) - case 'f': - return compactFalse(dst, src, cursor) - case 'n': - return compactNull(dst, src, cursor) - default: - return nil, 0, errors.ErrSyntax(fmt.Sprintf("unexpected character '%c'", src[cursor]), cursor) - } - } -} - -func compactObject(dst, src []byte, cursor int64, escape bool) ([]byte, int64, error) { - if src[cursor] == '{' { - dst = append(dst, '{') - } else { - return nil, 0, errors.ErrExpected("expected { character for object value", cursor) - } - cursor = skipWhiteSpace(src, cursor+1) - if src[cursor] == '}' { - dst = append(dst, '}') - return dst, cursor + 1, nil - } - var err error - for { - cursor = skipWhiteSpace(src, cursor) - dst, cursor, err = compactString(dst, src, cursor, escape) - if err != nil { - return nil, 0, err - } - cursor = skipWhiteSpace(src, cursor) - if src[cursor] != ':' { - return nil, 0, errors.ErrExpected("colon after object key", cursor) - } - dst = append(dst, ':') - dst, cursor, err = compactValue(dst, src, cursor+1, escape) - if err != nil { - return nil, 0, err - } - cursor = skipWhiteSpace(src, cursor) - switch src[cursor] { - case '}': - dst = append(dst, '}') - cursor++ - return dst, cursor, nil - case ',': - dst = append(dst, ',') - default: - return nil, 0, errors.ErrExpected("comma after object value", cursor) - } - cursor++ - } -} - -func compactArray(dst, src []byte, cursor int64, escape bool) ([]byte, int64, error) { - if src[cursor] == '[' { - dst = append(dst, '[') - } else { - return nil, 0, errors.ErrExpected("expected [ character for array value", cursor) - } - cursor = skipWhiteSpace(src, cursor+1) - if src[cursor] == ']' { - dst = append(dst, ']') - return dst, cursor + 1, nil - } - var err error - for { - dst, cursor, err = compactValue(dst, src, cursor, escape) - if err != nil { - return nil, 0, err - } - cursor = skipWhiteSpace(src, cursor) - switch src[cursor] { - case ']': - dst = append(dst, ']') - cursor++ - return dst, cursor, nil - case ',': - dst = append(dst, ',') - default: - return nil, 0, errors.ErrExpected("comma after array value", cursor) - } - cursor++ - } -} - -func compactString(dst, src []byte, cursor int64, escape bool) ([]byte, int64, error) { - if src[cursor] != '"' { - return nil, 0, errors.ErrInvalidCharacter(src[cursor], "string", cursor) - } - start := cursor - for { - cursor++ - c := src[cursor] - if escape { - if isHTMLEscapeChar[c] { - dst = append(dst, src[start:cursor]...) - dst = append(dst, `\u00`...) - dst = append(dst, hex[c>>4], hex[c&0xF]) - start = cursor + 1 - } else if c == 0xE2 && cursor+2 < int64(len(src)) && src[cursor+1] == 0x80 && src[cursor+2]&^1 == 0xA8 { - dst = append(dst, src[start:cursor]...) - dst = append(dst, `\u202`...) - dst = append(dst, hex[src[cursor+2]&0xF]) - cursor += 2 - start = cursor + 3 - } - } - switch c { - case '\\': - cursor++ - if src[cursor] == nul { - return nil, 0, errors.ErrUnexpectedEndOfJSON("string", int64(len(src))) - } - case '"': - cursor++ - return append(dst, src[start:cursor]...), cursor, nil - case nul: - return nil, 0, errors.ErrUnexpectedEndOfJSON("string", int64(len(src))) - } - } -} - -func compactNumber(dst, src []byte, cursor int64) ([]byte, int64, error) { - start := cursor - for { - cursor++ - if floatTable[src[cursor]] { - continue - } - break - } - num := src[start:cursor] - if _, err := strconv.ParseFloat(*(*string)(unsafe.Pointer(&num)), 64); err != nil { - return nil, 0, err - } - dst = append(dst, num...) - return dst, cursor, nil -} - -func compactTrue(dst, src []byte, cursor int64) ([]byte, int64, error) { - if cursor+3 >= int64(len(src)) { - return nil, 0, errors.ErrUnexpectedEndOfJSON("true", cursor) - } - if !bytes.Equal(src[cursor:cursor+4], []byte(`true`)) { - return nil, 0, errors.ErrInvalidCharacter(src[cursor], "true", cursor) - } - dst = append(dst, "true"...) - cursor += 4 - return dst, cursor, nil -} - -func compactFalse(dst, src []byte, cursor int64) ([]byte, int64, error) { - if cursor+4 >= int64(len(src)) { - return nil, 0, errors.ErrUnexpectedEndOfJSON("false", cursor) - } - if !bytes.Equal(src[cursor:cursor+5], []byte(`false`)) { - return nil, 0, errors.ErrInvalidCharacter(src[cursor], "false", cursor) - } - dst = append(dst, "false"...) - cursor += 5 - return dst, cursor, nil -} - -func compactNull(dst, src []byte, cursor int64) ([]byte, int64, error) { - if cursor+3 >= int64(len(src)) { - return nil, 0, errors.ErrUnexpectedEndOfJSON("null", cursor) - } - if !bytes.Equal(src[cursor:cursor+4], []byte(`null`)) { - return nil, 0, errors.ErrInvalidCharacter(src[cursor], "null", cursor) - } - dst = append(dst, "null"...) - cursor += 4 - return dst, cursor, nil -} |