Skip parent constructor in WP_MySQL_Token

Token construction is on the lexer hot path; bypassing the
`WP_Parser_Token::__construct()` indirection and assigning the four
properties directly removes one method call per token.

Requires `$input` on `WP_Parser_Token` to be `protected` instead of
`private` so the subclass can write to it.

Co-authored-by: Adam Zieliński <adam@adamziel.com>

Adapted from #375

Author: JanJakes

packages/mysql-on-sqlite/src/mysql/class-wp-mysql-token.php

@@ -30,7 +30,11 @@ public function __construct(
 		string $input,
 		bool $sql_mode_no_backslash_escapes_enabled
 	) {
-		parent::__construct( $id, $start, $length, $input );
+		$this->id     = $id;
+		$this->start  = $start;
+		$this->length = $length;
+		$this->input  = $input;
+
 		$this->sql_mode_no_backslash_escapes_enabled = $sql_mode_no_backslash_escapes_enabled;
 	}
 

packages/mysql-on-sqlite/src/parser/class-wp-parser-token.php

@@ -35,7 +35,7 @@ class WP_Parser_Token {
 	 *
 	 * @var string
 	 */
-	private $input;
+	protected $input;
 
 	/**
 	 * Constructor.