diff options
author | Luke Shumaker <lukeshu@lukeshu.com> | 2023-02-15 18:58:51 -0700 |
---|---|---|
committer | Luke Shumaker <lukeshu@lukeshu.com> | 2023-02-16 22:56:05 -0700 |
commit | 30e0ee4ced0be18b4df91674fd6f073793b61fe9 (patch) | |
tree | 378e4acbf0f3b1cac9258aa7de3b9c4f62d6259f | |
parent | a0e44530509d3b342b8011ac4467d957350f5ffa (diff) |
encode: Avoid allocations when formatting integers
-rw-r--r-- | encode.go | 13 |
1 files changed, 11 insertions, 2 deletions
@@ -228,7 +228,12 @@ func encode(w *ReEncoder, val reflect.Value, escaper BackslashEscaper, quote boo return err } } - if _, err := w.WriteString(strconv.FormatInt(val.Int(), 10)); err != nil { + // MaxInt64 = 9223372036854775807 + // MinInt64 = -9223372036854775808 + // 0 1 2 + // 12345678901234567890 + var buf [20]byte + if _, err := w.Write(strconv.AppendInt(buf[:0], val.Int(), 10)); err != nil { return err } if quote { @@ -242,7 +247,11 @@ func encode(w *ReEncoder, val reflect.Value, escaper BackslashEscaper, quote boo return err } } - if _, err := w.WriteString(strconv.FormatUint(val.Uint(), 10)); err != nil { + // MaxUint64 = 18446744073709551615 + // 0 1 2 + // 12345678901234567890 + var buf [20]byte + if _, err := w.Write(strconv.AppendUint(buf[:0], val.Uint(), 10)); err != nil { return err } if quote { |