Add invopop/jsonschema fork

vendor/github.com/wk8/go-ordered-map/v2/json.go

@@ -0,0 +1,182 @@
+package orderedmap
+
+import (
+	"bytes"
+	"encoding"
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"unicode/utf8"
+
+	"github.com/buger/jsonparser"
+	"github.com/mailru/easyjson/jwriter"
+)
+
+var (
+	_ json.Marshaler   = &OrderedMap[int, any]{}
+	_ json.Unmarshaler = &OrderedMap[int, any]{}
+)
+
+// MarshalJSON implements the json.Marshaler interface.
+func (om *OrderedMap[K, V]) MarshalJSON() ([]byte, error) { //nolint:funlen
+	if om == nil || om.list == nil {
+		return []byte("null"), nil
+	}
+
+	writer := jwriter.Writer{}
+	writer.RawByte('{')
+
+	for pair, firstIteration := om.Oldest(), true; pair != nil; pair = pair.Next() {
+		if firstIteration {
+			firstIteration = false
+		} else {
+			writer.RawByte(',')
+		}
+
+		switch key := any(pair.Key).(type) {
+		case string:
+			writer.String(key)
+		case encoding.TextMarshaler:
+			writer.RawByte('"')
+			writer.Raw(key.MarshalText())
+			writer.RawByte('"')
+		case int:
+			writer.IntStr(key)
+		case int8:
+			writer.Int8Str(key)
+		case int16:
+			writer.Int16Str(key)
+		case int32:
+			writer.Int32Str(key)
+		case int64:
+			writer.Int64Str(key)
+		case uint:
+			writer.UintStr(key)
+		case uint8:
+			writer.Uint8Str(key)
+		case uint16:
+			writer.Uint16Str(key)
+		case uint32:
+			writer.Uint32Str(key)
+		case uint64:
+			writer.Uint64Str(key)
+		default:
+
+			// this switch takes care of wrapper types around primitive types, such as
+			// type myType string
+			switch keyValue := reflect.ValueOf(key); keyValue.Type().Kind() {
+			case reflect.String:
+				writer.String(keyValue.String())
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				writer.Int64Str(keyValue.Int())
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+				writer.Uint64Str(keyValue.Uint())
+			default:
+				return nil, fmt.Errorf("unsupported key type: %T", key)
+			}
+		}
+
+		writer.RawByte(':')
+		// the error is checked at the end of the function
+		writer.Raw(json.Marshal(pair.Value)) //nolint:errchkjson
+	}
+
+	writer.RawByte('}')
+
+	return dumpWriter(&writer)
+}
+
+func dumpWriter(writer *jwriter.Writer) ([]byte, error) {
+	if writer.Error != nil {
+		return nil, writer.Error
+	}
+
+	var buf bytes.Buffer
+	buf.Grow(writer.Size())
+	if _, err := writer.DumpTo(&buf); err != nil {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (om *OrderedMap[K, V]) UnmarshalJSON(data []byte) error {
+	if om.list == nil {
+		om.initialize(0)
+	}
+
+	return jsonparser.ObjectEach(
+		data,
+		func(keyData []byte, valueData []byte, dataType jsonparser.ValueType, offset int) error {
+			if dataType == jsonparser.String {
+				// jsonparser removes the enclosing quotes; we need to restore them to make a valid JSON
+				valueData = data[offset-len(valueData)-2 : offset]
+			}
+
+			var key K
+			var value V
+
+			switch typedKey := any(&key).(type) {
+			case *string:
+				s, err := decodeUTF8(keyData)
+				if err != nil {
+					return err
+				}
+				*typedKey = s
+			case encoding.TextUnmarshaler:
+				if err := typedKey.UnmarshalText(keyData); err != nil {
+					return err
+				}
+			case *int, *int8, *int16, *int32, *int64, *uint, *uint8, *uint16, *uint32, *uint64:
+				if err := json.Unmarshal(keyData, typedKey); err != nil {
+					return err
+				}
+			default:
+				// this switch takes care of wrapper types around primitive types, such as
+				// type myType string
+				switch reflect.TypeOf(key).Kind() {
+				case reflect.String:
+					s, err := decodeUTF8(keyData)
+					if err != nil {
+						return err
+					}
+
+					convertedKeyData := reflect.ValueOf(s).Convert(reflect.TypeOf(key))
+					reflect.ValueOf(&key).Elem().Set(convertedKeyData)
+				case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+					reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+					if err := json.Unmarshal(keyData, &key); err != nil {
+						return err
+					}
+				default:
+					return fmt.Errorf("unsupported key type: %T", key)
+				}
+			}
+
+			if err := json.Unmarshal(valueData, &value); err != nil {
+				return err
+			}
+
+			om.Set(key, value)
+			return nil
+		})
+}
+
+func decodeUTF8(input []byte) (string, error) {
+	remaining, offset := input, 0
+	runes := make([]rune, 0, len(remaining))
+
+	for len(remaining) > 0 {
+		r, size := utf8.DecodeRune(remaining)
+		if r == utf8.RuneError && size <= 1 {
+			return "", fmt.Errorf("not a valid UTF-8 string (at position %d): %s", offset, string(input))
+		}
+
+		runes = append(runes, r)
+		remaining = remaining[size:]
+		offset += size
+	}
+
+	return string(runes), nil
+}