TUN-5261: Collect QUIC metrics about RTT, packets and bytes transfered and log events at tracing level

vendor/github.com/francoispqt/gojay/decode_embedded_json.go

@@ -0,0 +1,85 @@
+package gojay
+
+// EmbeddedJSON is a raw encoded JSON value.
+// It can be used to delay JSON decoding or precompute a JSON encoding.
+type EmbeddedJSON []byte
+
+func (dec *Decoder) decodeEmbeddedJSON(ej *EmbeddedJSON) error {
+	var err error
+	if ej == nil {
+		return InvalidUnmarshalError("Invalid nil pointer given")
+	}
+	var beginOfEmbeddedJSON int
+	for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
+		switch dec.data[dec.cursor] {
+		case ' ', '\n', '\t', '\r', ',':
+			continue
+		// is null
+		case 'n':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor++
+			err := dec.assertNull()
+			if err != nil {
+				return err
+			}
+		case 't':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor++
+			err := dec.assertTrue()
+			if err != nil {
+				return err
+			}
+		// is false
+		case 'f':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor++
+			err := dec.assertFalse()
+			if err != nil {
+				return err
+			}
+		// is an object
+		case '{':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor = dec.cursor + 1
+			dec.cursor, err = dec.skipObject()
+		// is string
+		case '"':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor = dec.cursor + 1
+			err = dec.skipString() // why no new dec.cursor in result?
+		// is array
+		case '[':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor = dec.cursor + 1
+			dec.cursor, err = dec.skipArray()
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-':
+			beginOfEmbeddedJSON = dec.cursor
+			dec.cursor, err = dec.skipNumber()
+		}
+		break
+	}
+	if err == nil {
+		if dec.cursor-1 >= beginOfEmbeddedJSON {
+			*ej = append(*ej, dec.data[beginOfEmbeddedJSON:dec.cursor]...)
+		}
+		dec.called |= 1
+	}
+	return err
+}
+
+// AddEmbeddedJSON adds an EmbeddedsJSON to the value pointed by v.
+// It can be used to delay JSON decoding or precompute a JSON encoding.
+func (dec *Decoder) AddEmbeddedJSON(v *EmbeddedJSON) error {
+	return dec.EmbeddedJSON(v)
+}
+
+// EmbeddedJSON adds an EmbeddedsJSON to the value pointed by v.
+// It can be used to delay JSON decoding or precompute a JSON encoding.
+func (dec *Decoder) EmbeddedJSON(v *EmbeddedJSON) error {
+	err := dec.decodeEmbeddedJSON(v)
+	if err != nil {
+		return err
+	}
+	dec.called |= 1
+	return nil
+}