Move method into grammar.php instead of duplicating in each grammar

laravel/database/schema/grammars/grammar.php

@@ -39,4 +39,19 @@ abstract class Grammar extends \Laravel\Database\Grammar {
 		return parent::wrap($value);
 	}
 
+	/**
+	 * Get the SQL syntax for indicating if a column is unsigned.
+	 *
+	 * @param  Table   $table
+	 * @param  Fluent  $column
+	 * @return string
+	 */
+	protected function unsigned(Table $table, Fluent $column)
+	{
+		if ($column->type == 'integer' && $column->unsigned)
+		{
+			return ' UNSIGNED';
+		}
+	}
+
 }
\ No newline at end of file

laravel/database/schema/grammars/mysql.php

@@ -91,21 +91,6 @@ class MySQL extends Grammar {
 	}
 
 	/**
-	 * Get the SQL syntax for indicating if a column is unsigned.
-	 *
-	 * @param  Table   $table
-	 * @param  Fluent  $column
-	 * @return string
-	 */
-	protected function unsigned(Table $table, Fluent $column)
-	{
-		if ($column->type == 'integer' && $column->unsigned)
-		{
-			return ' UNSIGNED';
-		}
-	}
-
-	/**
 	 * Get the SQL syntax for indicating if a column is nullable.
 	 *
 	 * @param  Table   $table

laravel/database/schema/grammars/postgres.php

@@ -79,21 +79,6 @@ class Postgres extends Grammar {
 	}
 
 	/**
-	 * Get the SQL syntax for indicating if a column is unsigned.
-	 *
-	 * @param  Table   $table
-	 * @param  Fluent  $column
-	 * @return string
-	 */
-	protected function unsigned(Table $table, Fluent $column)
-	{
-		if ($column->type == 'integer' && $column->unsigned)
-		{
-			return ' UNSIGNED';
-		}
-	}
-
-	/**
 	 * Get the SQL syntax for indicating if a column is nullable.
 	 *
 	 * @param  Table   $table

laravel/database/schema/grammars/sqlite.php

@@ -105,21 +105,6 @@ class SQLite extends Grammar {
 	}
 
 	/**
-	 * Get the SQL syntax for indicating if a column is unsigned.
-	 *
-	 * @param  Table   $table
-	 * @param  Fluent  $column
-	 * @return string
-	 */
-	protected function unsigned(Table $table, Fluent $column)
-	{
-		if ($column->type == 'integer' && $column->unsigned)
-		{
-			return ' UNSIGNED';
-		}
-	}
-
-	/**
 	 * Get the SQL syntax for indicating if a column is nullable.
 	 *
 	 * @param  Table   $table

laravel/database/schema/grammars/sqlserver.php

@@ -86,21 +86,6 @@ class SQLServer extends Grammar {
 	}
 
 	/**
-	 * Get the SQL syntax for indicating if a column is unsigned.
-	 *
-	 * @param  Table   $table
-	 * @param  Fluent  $column
-	 * @return string
-	 */
-	protected function unsigned(Table $table, Fluent $column)
-	{
-		if ($column->type == 'integer' && $column->unsigned)
-		{
-			return ' UNSIGNED';
-		}
-	}
-
-	/**
 	 * Get the SQL syntax for indicating if a column is nullable.
 	 *
 	 * @param  Table   $table