Configuring Simple Multiline Structure Rules¶

There are rules which will check the structure of simple multiline expressions and conditions.

There are several options to these rules:

Method	Values	Default	Description
`new_line_after_assign`	`yes`, `no`, `ignore`	`yes`	`yes` = Adds a carriage return (alias “new line”) after the assigment operator. `no` = Removes a carriage return (alias “new line”) after the assigment operator. `ignore` = Ignores any formatting after the assignment operator.
`ignore_single_line`	`yes`, `no`	`yes`	`yes` = Ignore single line expressions. `no` = Apply rules to single line expressions.

This is an example of how to configure these options.

rule :
  concurrent_011:
     new_line_after_assign : 'yes'
     ignore_single_line : 'no'

The following code snippet will be used in the following examples:

wr_en <= '1' when fifo_full = '0' else
         '0';

rd_en <=
         '1' when fifo_empty = '0' else
         '0';

Note

In the examples below, indenting is performed by a different rule.

Example: `new_line_after_assign` set to `yes`¶

Code after the assignment operator <= will be moved to the next line.

wr_en <=
         '1' when fifo_full = '0' else
         '0';

rd_en <=
         '1' when fifo_empty = '0' else
         '0';

Code after the assignment operator <= will be enforced.

wr_en <= '1' when fifo_full = '0' else
         '0';

rd_en <= '1' when fifo_empty = '0' else
         '0';