Use declare strict_types

src/Bytes.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Bytes

src/Date.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Date

src/Dictionary.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 /**

src/DisplayString.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class DisplayString

src/InnerList.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class InnerList implements TupleInterface

src/Item.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Item implements TupleInterface

src/OuterList.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 /**

src/Parameters.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 /**

src/ParseException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class ParseException extends \RuntimeException

src/Parser.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Parser
@@ -115,7 +117,7 @@ private static function parseInnerList(string &$string): InnerList
  /**
  * @param string $string
  *
- * @return \gapple\StructuredFields\Item
+ * @return Item
  * A [value, parameters] tuple.
  */
  public static function parseItem(string $string): Item
@@ -137,7 +139,7 @@ public static function parseItem(string $string): Item
  *
  * @param string $string
  *
- * @return \gapple\StructuredFields\Item
+ * @return Item
  * A [value, parameters] tuple.
  */
  private static function doParseItem(string &$string): Item
@@ -151,7 +153,7 @@ private static function doParseItem(string &$string): Item
  /**
  * @param string $string
  *
- * @return bool|float|int|string|\gapple\StructuredFields\Bytes|\gapple\StructuredFields\Token|\gapple\StructuredFields\Date
+ * @return bool|float|int|string|Bytes|Date|DisplayString|Token
  */
  private static function parseBareItem(string &$string)
  {
@@ -180,7 +182,7 @@ private static function parseBareItem(string &$string)
  return $value;
  }
 
- private static function parseParameters(string &$string): object
+ private static function parseParameters(string &$string): Parameters
  {
  $parameters = new Parameters();
 
@@ -310,7 +312,7 @@ private static function parseDisplayString(string &$string): DisplayString
  $display_string = new DisplayString(rawurldecode($encoded_string));
  // An invalid UTF-8 subject will cause the preg_* function to match nothing.
  // @see https://www.php.net/manual/en/reference.pcre.pattern.modifiers.php
- if (!preg_match('/^\X*$/u', $display_string)) {
+ if (!preg_match('/^\X*$/u', (string) $display_string)) {
  throw new ParseException("Invalid byte sequence in display string");
  }
  return $display_string;
@@ -344,7 +346,7 @@ private static function parseToken(string &$string): Token
  *
  * @param string $string
  *
- * @return \gapple\StructuredFields\Bytes
+ * @return Bytes
  */
  private static function parseByteSequence(string &$string): Bytes
  {

src/SerializeException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class SerializeException extends \RuntimeException

src/Serializer.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Serializer
@@ -218,7 +220,7 @@ private static function serializeDisplayString(DisplayString $value): string
  return strtolower(rawurlencode($matches[0]));
  };
 
- return '%"' . preg_replace_callback($encode_pattern, $encode_callback, $value) . '"';
+ return '%"' . preg_replace_callback($encode_pattern, $encode_callback, (string) $value) . '"';
  }
 
  private static function serializeToken(Token $value): string
@@ -228,16 +230,16 @@ private static function serializeToken(Token $value): string
  // @see https://tools.ietf.org/html/rfc7230#section-3.2.6
  $tchar = preg_quote("!#$%&'*+-.^_`|~");
 
- if (!preg_match('/^((?:\*|[a-z])[a-z0-9:\/' . $tchar . ']*)$/i', $value)) {
+ if (!preg_match('/^((?:\*|[a-z])[a-z0-9:\/' . $tchar . ']*)$/i', (string) $value)) {
  throw new SerializeException('Invalid characters in token');
  }
 
- return $value;
+ return (string) $value;
  }
 
  private static function serializeByteSequence(Bytes $value): string
  {
- return ':' . base64_encode($value) . ':';
+ return ':' . base64_encode((string) $value) . ':';
  }
 
  private static function serializeParameters(object $value): string

src/Token.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 class Token

src/TupleInterface.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 /**

src/TupleTrait.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace gapple\StructuredFields;
 
 trait TupleTrait