When you place your cursor on a parenthesis or curly brace that you want to match, the corresponding one turns blue, if you then double-click the opening parenthesis it should select that entire code block.
This also works in reverse, so if you double-click the closing parenthesis, brackets, curly braces, it also selects the entire block. And I think you don't even need to replace the cursor (just double-clicking works fine here).