fix: new phpstan errors

Author: taka-oyama

src/Query/Processor.php

@@ -81,6 +81,27 @@ public function processSelect(Builder $query, $results): array
         return $results;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function processTables($results)
+    {
+        return array_map(function ($result) {
+            $result = (object) $result;
+
+            return [
+                'name' => $result->name,
+                'schema' => $result->schema === '' ? $result->schema : null,
+                'schema_qualified_name' => $result->schema !== '' ? $result->schema.'.'.$result->name : $result->name,
+                'size' => isset($result->size) ? (int) $result->size : null,
+                'comment' => null,
+                'collation' => null,
+                'engine' => null,
+                'parent' => $result->parent,
+            ];
+        }, $results);
+    }
+
     /**
      * @template TValue of mixed
      * @param TValue $value

src/Schema/Builder.php

@@ -19,6 +19,7 @@
 
 use Closure;
 use Colopl\Spanner\Connection;
+use Colopl\Spanner\Query\Processor;
 use Illuminate\Database\Schema\Builder as BaseBuilder;
 
 /**
@@ -41,17 +42,15 @@ class Builder extends BaseBuilder
     public static $defaultMorphKeyType = 'uuid';
 
     /**
-     * @param null $schema
      * @inheritDoc Adds a parent key, for tracking interleaving
-     *
-     * @return list<array{ name: string, type: string, parent: string }>
+     * @return list<array{name: string, schema: string|null, schema_qualified_name: string, size: int|null, comment: string|null, collation: string|null, engine: string|null, parent: string}>
      */
     public function getTables($schema = null)
     {
-        /** @var list<array{ name: string, type: string, parent: string }> */
-        return $this->connection->select(
-            $this->grammar->compileTables(null),
-        );
+        $results = $this->connection->select($this->grammar->compileTables($schema));
+        assert(array_is_list($results));
+        /** @phpstan-ignore return.type */
+        return $this->connection->getPostProcessor()->processTables($results);
     }
 
     /**

src/Schema/Grammar.php

@@ -47,7 +47,14 @@ class Grammar extends BaseGrammar
      */
     public function compileTables($schema)
     {
-        return 'select `table_name` as name, `table_type` as type, `parent_table_name` as parent from information_schema.tables where table_schema = \'\' and table_type = \'BASE TABLE\'';
+        if ($schema === null || (is_array($schema) && count($schema) === 0)) {
+            $schema = '';
+        }
+
+        return
+            'select `table_name` as name, `table_type` as type, `parent_table_name` as parent `table_schema` as `schema` ' .
+            'from information_schema.tables where table_type = \'BASE TABLE\'' .
+            'table_schema in (' . $this->quoteString($schema) . ')';
     }
 
     /**