【Formatter】Control Indentation for Nested Conditional and Loop Directives

[xterao]

Control Indentation for Nested Conditional and Loop Directives

Improve the readability of SQL templates that use deeply nested control structures by controlling indentation based on the nesting level of conditional (/%if/) and loop (/%for/) directives.

Pattern ①: Indent Increases with Nesting Level

WHERE id = 1
   OR name = 'name'
      -- comment
      AND title = 'title'
      /*%for id : ids */       -- Parent directive (indent base)
      AND name = 'name'
        /*%if id_has_next */   -- Child directive
        OR sub = 'sub'
        /*%end */
      /*%end */

Pattern ②: Uniform Indentation Regardless of Nesting

WHERE id = 1
   OR name = 'name'
      -- comment
      AND title = 'title'
      /*%for id : ids */       -- Parent directive (indent base)
      AND name = 'name'
      /*%if id_has_next */     -- Child directive (no added indent)
      OR sub = 'sub'
      /*%end */ 
      /*%end */