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vendor/doctrine/migrations/lib/Doctrine/Migrations/Provider/DBALSchemaDiffProvider.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Migrations\Provider;
+
+use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\DBAL\Schema\AbstractSchemaManager;
+use Doctrine\DBAL\Schema\Schema;
+
+/**
+ * The SchemaDiffProvider class is responsible for providing a Doctrine\DBAL\Schema\Schema instance that
+ * represents the current state of your database. A clone of this Schema instance is passed to each of your migrations
+ * so that you can manipulate the Schema object. Your manipulated Schema object is then compared to the original Schema
+ * object to produce the SQL statements that need to be executed.
+ *
+ * @internal
+ *
+ * @see Doctrine\Migrations\Version\DbalExecutor
+ */
+class DBALSchemaDiffProvider implements SchemaDiffProvider
+{
+    /** @param AbstractSchemaManager<AbstractPlatform> $schemaManager- */
+    public function __construct(
+        private readonly AbstractSchemaManager $schemaManager,
+        private readonly AbstractPlatform $platform,
+    ) {
+    }
+
+    public function createFromSchema(): Schema
+    {
+        return $this->schemaManager->introspectSchema();
+    }
+
+    public function createToSchema(Schema $fromSchema): Schema
+    {
+        return clone $fromSchema;
+    }
+
+    /** @return string[] */
+    public function getSqlDiffToMigrate(Schema $fromSchema, Schema $toSchema): array
+    {
+        return $this->platform->getAlterSchemaSQL(
+            $this->schemaManager->createComparator()->compareSchemas($fromSchema, $toSchema),
+        );
+    }
+}