Extract the MySQL-on-SQLite driver to a package

Author: JanJakes

.github/workflows/phpunit-tests-run.yml

@@ -72,11 +72,22 @@ jobs:
             exit 1
           fi
 
-      - name: Install Composer dependencies
+      - name: Install Composer dependencies (root)
         uses: ramsey/composer-install@v3
         with:
           ignore-cache: "yes"
           composer-options: "--optimize-autoloader"
 
+      - name: Install Composer dependencies (wp-mysql-on-sqlite)
+        uses: ramsey/composer-install@v3
+        with:
+          working-directory: packages/wp-mysql-on-sqlite
+          ignore-cache: "yes"
+          composer-options: "--optimize-autoloader"
+
       - name: Run PHPUnit tests
-        run: php ./vendor/bin/phpunit -c ./phpunit.xml.dist 
+        run: php ./vendor/bin/phpunit -c ./phpunit.xml.dist
+        working-directory: packages/wp-mysql-on-sqlite
+
+      - name: Run PHPUnit tests for the legacy driver
+        run: php ./vendor/bin/phpunit -c ./phpunit.xml.dist

grammar-tools/convert-grammar.php

@@ -10,10 +10,10 @@
  * @TODO Migrate the current regex-based solution to a proper grammar parser.
  */
 
-require_once __DIR__ . '/../wp-includes/parser/class-wp-parser-grammar.php';
-require_once __DIR__ . '/../wp-includes/mysql/class-wp-mysql-lexer.php';
+require_once __DIR__ . '/../packages/wp-mysql-on-sqlite/src/parser/class-wp-parser-grammar.php';
+require_once __DIR__ . '/../packages/wp-mysql-on-sqlite/src/mysql/class-wp-mysql-lexer.php';
 
-const GRAMMAR_FILE = __DIR__ . '/../wp-includes/mysql/mysql-grammar.php';
+const GRAMMAR_FILE = __DIR__ . '/../packages/wp-mysql-on-sqlite/src/mysql/mysql-grammar.php';
 
 // Convert the original MySQLParser.g4 grammar to a JSON format.
 // The grammar is also flattened and expanded to an ebnf-to-json-like format.

packages/wp-mysql-on-sqlite/composer.json

@@ -0,0 +1,10 @@
+{
+    "name": "wordpress/wp-mysql-on-sqlite",
+    "type": "library",
+	"scripts": {
+		"test": "phpunit"
+	},
+    "require-dev": {
+        "phpunit/phpunit": "^8.5"
+    }
+}

phpunit.xml.dist …ages/wp-mysql-on-sqlite/phpunit.xml.distphpunit.xml.dist renamed to packages/wp-mysql-on-sqlite/phpunit.xml.dist phpunit.xml.dist renamed to packages/wp-mysql-on-sqlite/phpunit.xml.dist

@@ -14,8 +14,7 @@
 	<testsuites>
 		<!-- Default test suite to run all tests. -->
 		<testsuite name="default">
-			<directory suffix=".php">tests/</directory>
-			<!-- Exclude test tools. -->
+			<directory suffix="_Tests.php">tests/</directory>
 			<exclude>tests/tools</exclude>
 		</testsuite>
 	</testsuites>

packages/wp-mysql-on-sqlite/src/load.php

@@ -0,0 +1,26 @@
+<?php
+
+define( 'WP_MYSQL_ON_SQLITE_LOADER_PATH', __FILE__ );
+
+/**
+ * Load the PDO MySQL-on-SQLite driver and its dependencies.
+ */
+require_once __DIR__ . '/php-polyfills.php';
+require_once __DIR__ . '/../../../version.php';
+require_once __DIR__ . '/parser/class-wp-parser-grammar.php';
+require_once __DIR__ . '/parser/class-wp-parser.php';
+require_once __DIR__ . '/parser/class-wp-parser-node.php';
+require_once __DIR__ . '/parser/class-wp-parser-token.php';
+require_once __DIR__ . '/mysql/class-wp-mysql-token.php';
+require_once __DIR__ . '/mysql/class-wp-mysql-lexer.php';
+require_once __DIR__ . '/mysql/class-wp-mysql-parser.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-connection.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-configurator.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-driver.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-driver-exception.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-information-schema-builder.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-information-schema-exception.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-information-schema-reconstructor.php';
+require_once __DIR__ . '/sqlite/class-wp-sqlite-pdo-user-defined-functions.php';
+require_once __DIR__ . '/sqlite/class-wp-pdo-mysql-on-sqlite.php';
+require_once __DIR__ . '/sqlite/class-wp-pdo-proxy-statement.php';