Readonly properties

src/Clock/OffsetClock.php

@@ -16,12 +16,12 @@ final class OffsetClock implements Clock
     /**
      * The reference clock.
      */
-    private Clock $referenceClock;
+    private readonly Clock $referenceClock;
 
     /**
      * The offset to apply to the clock.
      */
-    private Duration $offset;
+    private readonly Duration $offset;
 
     /**
      * @param Clock    $referenceClock The reference clock.

src/Clock/ScaleClock.php

@@ -16,17 +16,17 @@ final class ScaleClock implements Clock
     /**
      * The reference clock.
      */
-    private Clock $referenceClock;
+    private readonly Clock $referenceClock;
 
     /**
      * The start time.
      */
-    private Instant $startTime;
+    private readonly Instant $startTime;
 
     /**
      * The time scale.
      */
-    private int $timeScale;
+    private readonly int $timeScale;
 
     /**
      * - a scale > 1 makes the time move at an accelerated pace;

src/Duration.php

@@ -29,14 +29,14 @@ final class Duration implements JsonSerializable, Stringable
     /**
      * The duration in seconds.
      */
-    private int $seconds;
+    private readonly int $seconds;
 
     /**
      * The nanoseconds adjustment to the duration, in the range 0 to 999,999,999.
      *
      * A duration of -1 nanoseconds is stored as -1 seconds plus 999,999,999 nanoseconds.
      */
-    private int $nanos;
+    private readonly int $nanos;
 
     /**
      * Private constructor. Use one of the factory methods to obtain a Duration.

src/Instant.php

@@ -28,12 +28,12 @@ final class Instant implements JsonSerializable, Stringable
     /**
      * The number of seconds since the epoch of 1970-01-01T00:00:00Z.
      */
-    private int $epochSecond;
+    private readonly int $epochSecond;
 
     /**
      * The nanoseconds adjustment to the epoch second, in the range 0 to 999,999,999.
      */
-    private int $nano;
+    private readonly int $nano;
 
     /**
      * Private constructor. Use of() to obtain an Instant.

src/Interval.php

@@ -18,12 +18,12 @@ final class Interval implements JsonSerializable, Stringable
     /**
      * The start instant, inclusive.
      */
-    private Instant $start;
+    private readonly Instant $start;
 
     /**
      * The end instant, exclusive.
      */
-    private Instant $end;
+    private readonly Instant $end;
 
     /**
      * @param Instant $startInclusive The start instant, inclusive.

src/LocalDate.php

@@ -51,17 +51,17 @@ final class LocalDate implements JsonSerializable, Stringable
     /**
      * The year.
      */
-    private int $year;
+    private readonly int $year;
 
     /**
      * The month-of-year.
      */
-    private int $month;
+    private readonly int $month;
 
     /**
      * The day-of-month.
      */
-    private int $day;
+    private readonly int $day;
 
     /**
      * Private constructor. Use of() to obtain an instance.

src/LocalDateRange.php

@@ -29,12 +29,12 @@ final class LocalDateRange implements IteratorAggregate, Countable, JsonSerializ
     /**
      * The start date, inclusive.
      */
-    private LocalDate $start;
+    private readonly LocalDate $start;
 
     /**
      * The end date, inclusive.
      */
-    private LocalDate $end;
+    private readonly LocalDate $end;
 
     /**
      * @param LocalDate $start The start date, inclusive.

src/LocalDateTime.php

@@ -24,9 +24,9 @@
  */
 final class LocalDateTime implements JsonSerializable, Stringable
 {
-    private LocalDate $date;
+    private readonly LocalDate $date;
 
-    private LocalTime $time;
+    private readonly LocalTime $time;
 
     public function __construct(LocalDate $date, LocalTime $time)
     {

src/LocalTime.php

@@ -46,22 +46,22 @@ final class LocalTime implements JsonSerializable, Stringable
     /**
      * The hour, in the range 0 to 23.
      */
-    private int $hour;
+    private readonly int $hour;
 
     /**
      * The minute, in the range 0 to 59.
      */
-    private int $minute;
+    private readonly int $minute;
 
     /**
      * The second, in the range 0 to 59.
      */
-    private int $second;
+    private readonly int $second;
 
     /**
      * The nanosecond, in the range 0 to 999,999,999.
      */
-    private int $nano;
+    private readonly int $nano;
 
     /**
      * Private constructor. Use of() to obtain an instance.

src/MonthDay.php

@@ -19,12 +19,12 @@ final class MonthDay implements JsonSerializable, Stringable
     /**
      * The month-of-year, from 1 to 12.
      */
-    private int $month;
+    private readonly int $month;
 
     /**
      * The day-of-month, from 1 to 31.
      */
-    private int $day;
+    private readonly int $day;
 
     /**
      * Private constructor. Use of() to obtain an instance.

src/Parser/PatternParser.php

@@ -12,12 +12,12 @@
  */
 final class PatternParser implements DateTimeParser
 {
-    private string $pattern;
+    private readonly string $pattern;
 
     /**
      * @var string[]
      */
-    private array $fields;
+    private readonly array $fields;
 
     /**
      * @param string   $pattern The regular expression pattern.

src/Period.php

@@ -19,11 +19,11 @@
  */
 final class Period implements JsonSerializable, Stringable
 {
-    private int $years;
+    private readonly int $years;
 
-    private int $months;
+    private readonly int $months;
 
-    private int $days;
+    private readonly int $days;
 
     /**
      * Private constructor. Use of() to obtain an instance.

src/Stopwatch.php

@@ -9,7 +9,7 @@
  */
 final class Stopwatch
 {
-    private Clock $clock;
+    private readonly Clock $clock;
 
     /**
      * The total time the stopwatch has been running, excluding the time elapsed since it was started.

src/TimeZoneOffset.php

@@ -15,7 +15,7 @@
  */
 final class TimeZoneOffset extends TimeZone
 {
-    private int $totalSeconds;
+    private readonly int $totalSeconds;
 
     /**
      * The string representation of this time-zone offset.

src/TimeZoneRegion.php

@@ -17,7 +17,7 @@
  */
 final class TimeZoneRegion extends TimeZone
 {
-    private DateTimeZone $zone;
+    private readonly DateTimeZone $zone;
 
     /**
      * Private constructor. Use a factory method to obtain an instance.

src/Year.php

@@ -22,7 +22,7 @@ final class Year implements JsonSerializable, Stringable
     /**
      * The year being represented.
      */
-    private int $year;
+    private readonly int $year;
 
     /**
      * @param int $year The year to represent, validated.

src/YearMonth.php

@@ -24,12 +24,12 @@ final class YearMonth implements JsonSerializable, Stringable
     /**
      * The year, from MIN_YEAR to MAX_YEAR.
      */
-    private int $year;
+    private readonly int $year;
 
     /**
      * The month, from 1 to 12.
      */
-    private int $month;
+    private readonly int $month;
 
     /**
      * @param int $year  The year, validated from MIN_YEAR to MAX_YEAR.

src/YearMonthRange.php

@@ -27,12 +27,12 @@ class YearMonthRange implements IteratorAggregate, Countable, JsonSerializable,
     /**
      * The start year-month, inclusive.
      */
-    private YearMonth $start;
+    private readonly YearMonth $start;
 
     /**
      * The end year-month, inclusive.
      */
-    private YearMonth $end;
+    private readonly YearMonth $end;
 
     /**
      * @param YearMonth $start The start year-month, inclusive.

src/YearWeek.php

@@ -26,12 +26,12 @@ final class YearWeek implements JsonSerializable, Stringable
     /**
      * The year, from MIN_YEAR to MAX_YEAR.
      */
-    private int $year;
+    private readonly int $year;
 
     /**
      * The week number, from 1 to 53. Must be valid for the year.
      */
-    private int $week;
+    private readonly int $week;
 
     /**
      * @param int $year The year, validated from MIN_YEAR to MAX_YEAR.

src/ZonedDateTime.php

@@ -27,25 +27,25 @@ class ZonedDateTime implements JsonSerializable, Stringable
     /**
      * The local date-time.
      */
-    private LocalDateTime $localDateTime;
+    private readonly LocalDateTime $localDateTime;
 
     /**
      * The time-zone offset from UTC/Greenwich.
      */
-    private TimeZoneOffset $timeZoneOffset;
+    private readonly TimeZoneOffset $timeZoneOffset;
 
     /**
      * The time-zone.
      *
      * It is either a TimeZoneRegion if this ZonedDateTime is region-based,
      * or the same instance as the offset if this ZonedDateTime is offset-based.
      */
-    private TimeZone $timeZone;
+    private readonly TimeZone $timeZone;
 
     /**
      * The instant represented by this ZonedDateTime.
      */
-    private Instant $instant;
+    private readonly Instant $instant;
 
     /**
      * Private constructor. Use a factory method to obtain an instance.