From 1d17436aaf42518eaf77a84069584916fffaf092 Mon Sep 17 00:00:00 2001
From: Dorian Villet <gnutix@gmail.com>
Date: Fri, 29 Sep 2023 14:10:33 +0200
Subject: [PATCH] Improve performances for LocalDate, LocalTime and Duration
 __toString().

---
 src/Duration.php        |  4 ++--
 src/LocalDate.php       | 14 ++++++++++----
 src/LocalTime.php       | 20 +++++++++-----------
 tests/LocalDateTest.php | 16 +++++++++++++++-
 4 files changed, 36 insertions(+), 18 deletions(-)

diff --git a/src/Duration.php b/src/Duration.php
index 9a2d03a..3dfaec3 100644
--- a/src/Duration.php
+++ b/src/Duration.php
@@ -13,9 +13,9 @@
 use function is_int;
 use function preg_match;
 use function rtrim;
-use function sprintf;
 use function str_pad;
 
+use const STR_PAD_LEFT;
 use const STR_PAD_RIGHT;
 
 /**
@@ -808,7 +808,7 @@ public function __toString(): string
         $string .= (($seconds === 0 && $negative) ? '-0' : $seconds);
 
         if ($nanos !== 0) {
-            $string .= '.' . rtrim(sprintf('%09d', $nanos), '0');
+            $string .= '.' . rtrim(str_pad((string) $nanos, 9, '0', STR_PAD_LEFT), '0');
         }
 
         return $string . 'S';
diff --git a/src/LocalDate.php b/src/LocalDate.php
index f0939c1..414ad68 100644
--- a/src/LocalDate.php
+++ b/src/LocalDate.php
@@ -14,9 +14,12 @@
 use DateTimeInterface;
 use JsonSerializable;
 
+use function abs;
 use function intdiv;
 use function min;
-use function sprintf;
+use function str_pad;
+
+use const STR_PAD_LEFT;
 
 /**
  * A date without a time-zone in the ISO-8601 calendar system, such as `2007-12-03`.
@@ -759,9 +762,12 @@ public function jsonSerialize(): string
      */
     public function __toString(): string
     {
-        $pattern = ($this->year < 0 ? '%05d' : '%04d') . '-%02d-%02d';
-
-        return sprintf($pattern, $this->year, $this->month, $this->day);
+        // This code is optimized for high performance
+        return ($this->year < 1000 ? ($this->year < 0 ? '-' : '') . str_pad((string) abs($this->year), 4, '0', STR_PAD_LEFT) : $this->year)
+            . '-'
+            . ($this->month < 10 ? '0' . $this->month : $this->month)
+            . '-'
+            . ($this->day < 10 ? '0' . $this->day : $this->day);
     }
 
     /**
diff --git a/src/LocalTime.php b/src/LocalTime.php
index d1376d4..6544ee1 100644
--- a/src/LocalTime.php
+++ b/src/LocalTime.php
@@ -19,9 +19,10 @@
 
 use function intdiv;
 use function rtrim;
-use function sprintf;
 use function str_pad;
 
+use const STR_PAD_LEFT;
+
 /**
  * A time without a time-zone in the ISO-8601 calendar system, such as 10:15:30.
  *
@@ -662,16 +663,13 @@ public function jsonSerialize(): string
      */
     public function __toString(): string
     {
-        if ($this->nano === 0) {
-            if ($this->second === 0) {
-                return sprintf('%02u:%02u', $this->hour, $this->minute);
-            } else {
-                return sprintf('%02u:%02u:%02u', $this->hour, $this->minute, $this->second);
-            }
-        }
-
-        $nanos = rtrim(sprintf('%09u', $this->nano), '0');
+        $hasNanos = $this->nano !== 0;
 
-        return sprintf('%02u:%02u:%02u.%s', $this->hour, $this->minute, $this->second, $nanos);
+        // This code is optimized for high performance
+        return ($this->hour < 10 ? '0' . $this->hour : $this->hour)
+            . ':'
+            . ($this->minute < 10 ? '0' . $this->minute : $this->minute)
+            . ($hasNanos || $this->second !== 0 ? ':' . str_pad((string) $this->second, 2, '0', STR_PAD_LEFT) : '')
+            . ($hasNanos ? '.' . rtrim(str_pad((string) $this->nano, 9, '0', STR_PAD_LEFT), '0') : '');
     }
 }
diff --git a/tests/LocalDateTest.php b/tests/LocalDateTest.php
index f46db60..9794386 100644
--- a/tests/LocalDateTest.php
+++ b/tests/LocalDateTest.php
@@ -1389,8 +1389,22 @@ public function testToString(int $year, int $month, int $day, string $expected):
     public function providerToString(): array
     {
         return [
-            [999, 1, 2, '0999-01-02'],
+            [-999999, 12, 31, '-999999-12-31'],
+            [-185321, 11, 2, '-185321-11-02'],
+            [-18532, 11, 2, '-18532-11-02'],
+            [-2023, 11, 28, '-2023-11-28'],
+            [-2023, 11, 2, '-2023-11-02'],
+            [-2023, 1, 2, '-2023-01-02'],
+            [-999, 1, 2, '-0999-01-02'],
             [-2, 1, 1, '-0002-01-01'],
+            [2, 1, 1, '0002-01-01'],
+            [999, 1, 2, '0999-01-02'],
+            [2023, 1, 2, '2023-01-02'],
+            [2023, 11, 2, '2023-11-02'],
+            [2023, 11, 28, '2023-11-28'],
+            [18532, 11, 2, '18532-11-02'],
+            [185321, 11, 2, '185321-11-02'],
+            [999999, 12, 31, '999999-12-31'],
         ];
     }