Subtype Rules

subtype_001

This rule checks for indentation of the subtype keyword.

Violation

architecture rtl of fifo is

     subtype read_size is range 0 to 9;
subtype write_size is range 0 to 9;

begin

Fix

architecture rtl of fifo is

  subtype read_size is range 0 to 9;
  subtype write_size is range 0 to 9;

begin

subtype_002

This rule checks for consistent capitalization of subtype names.

Violation

subtype read_size is range 0 to 9;
subtype write_size is range 0 to 9;

signal read  : READ_SIZE;
signal write : write_size;

constant read_sz  : read_size := 8;
constant write_sz : WRITE_size := 1;

Fix

subtype read_size is range 0 to 9;
subtype write_size is range 0 to 9;

signal read  : read_size;
signal write : write_size;

constant read_sz  : read_size := 8;
constant write_sz : write_size := 1;

subtype_003

This rule was deprecated and replaced with rules:

• function_015

• package_019

• procedure_010

• architecture_029

subtype_004

This rule checks for valid prefixes in subtype identifiers. The default new subtype prefix is st_.

Refer to Configuring Prefix and Suffix Rules for more information.

Violation

subtype my_subtype is range 0 to 9;

Fix

subtype st_my_subtype is range 0 to 9;

subtype_100

This rule checks for a single space before the identifier.

Refer to Configuring Whitespace Rules for options on changing the number of whitespaces..

Violation

subtype         my_subtype is range 0 to 9;

Fix

subtype my_subtype is range 0 to 9;

subtype_500

This rule checks the subtype keyword has proper case.

Refer to Configuring Uppercase and Lowercase Rules for more information.

Violation

SUBTYPE interface is record
Subtype interface is record
subtype interface is record

Fix

subtype interface is record
subtype interface is record
subtype interface is record

subtype_501

This rule checks the identifier has proper case.

Refer to Configuring Uppercase and Lowercase Rules for more information.

Violation

subtype INTERFACE is record
subtype Interface is record
subtype interface is record

Fix

subtype interface is record
subtype interface is record
subtype interface is record

subtype_502

This rule checks the is keyword has proper case.

Refer to Configuring Uppercase and Lowercase Rules for more information.

Violation

subtype interface IS record
subtype interface Is record
subtype interface is record

Fix

subtype interface is record
subtype interface is record
subtype interface is record

subtype_600

This rule checks for valid suffixes in subtype identifiers. The default new subtype suffix is _st.

Refer to Configuring Prefix and Suffix Rules for more information.

Violation

subtype my_subtype is range 0 to 9;

Fix

subtype my_subtype_st is range 0 to 9;