Case Rules¶
case_001¶
This rule checks the indent of case, when, and end case keywords.
Violation
case data is
when 0 =>
when 1 =>
when 3 =>
end case;
Fix
case data is
when 0 =>
when 1 =>
when 3 =>
end case;
case_002¶
This rule checks for a single space after the case keyword.
Violation
case data is
Fix
case data is
case_003¶
This rule checks for a single space before the is keyword.
Violation
case data is
Fix
case data is
case_004¶
This rule checks for a single space after the when keyword.
Violation
case data is
when 3 =>
Fix
case data is
when 3 =>
case_005¶
This rule checks for a single space before the => operator.
Violation
case data is
when 3 =>
Fix
case data is
when 3 =>
case_006¶
This rule checks for a single space between the end and case keywords.
Violation
case data is
end case;
Fix
case data is
end case;
case_007¶
This rule checks for blank lines or comments above the case keyword.
Refer to Configuring Previous Line Rules for options.
The default style is no_code
.
Violation
a <= '1';
case data is
-- This is a comment
case data is
Fix
a <= '1';
case data is
-- This is a comment
case data is
case_008¶
This rule checks for a blank line below the is keyword.
Refer to the section Configuring Blank Lines for options regarding comments.
Violation
case data is
when 0 =>
Fix
case data is
when 0 =>
case_009¶
This rule checks for blank lines or comments above the end keyword.
Refer to Configuring Blank Lines for options.
Violation
when others =>
null;
end case;
Fix
when others =>
null;
end case;
case_010¶
This rule checks for a blank line below the end case keywords.
Refer to the section Configuring Blank Lines for options regarding comments.
Violation
end case;
a <= '1';
Fix
end case;
a <= '1';
case_011¶
This rule checks the alignment of multiline when statements.
Violation
case data is
when 0 | 1 | 2 | 3
4 | 5 | 7 =>
Fix
case data is
when 0 | 1 | 2 | 3
4 | 5 | 7 =>
case_012¶
This rule checks for code after the => operator.
Violation
when 0 => a <= '1';
Fix
when 0 =>
a <= '1';
case_013¶
This rule checks the indent of the null keyword.
Violation
when others =>
null;
when others =>
null;
Fix
when others =>
null;
when others =>
null;
case_014¶
This rule checks the case keyword has proper case.
Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.
Violation
CASE address is
Case address is
case address is
Fix
case address is
case address is
case address is
case_015¶
This rule checks the is keyword has proper case.
Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.
Violation
case address IS
case address Is
case address iS
Fix
case address is
case address is
case address is
case_016¶
This rule checks the when has proper case.
Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.
Violation
WHEN a =>
When b =>
when c =>
Fix
when a =>
when b =>
when c =>
case_017¶
This rule checks the end keyword in the end case has proper case.
Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.
Violation
End case;
END case;
end case;
Fix
end case;
end case;
end case;
case_018¶
This rule checks the case keyword has proper case in the end case.
Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.
Violation
end CASE;
end CAse;
end case;
Fix
end case;
end case;
end case;
case_019¶
This rule checks for labels before the case keyword. The label should be removed. The preference is to have comments above the case statement.
Violation
CASE_LABEL : case address is
CASE_LABEL: case address is
case address is
Fix
case address is
case address is
case address is
case_020¶
This rule checks for labels after the end case keywords. The label should be removed. The preference is to have comments above the case statement.
Violation
end case CASE_LABEL;
end case;
Fix
end case;
end case;
case_021¶
This rule aligns consecutive comment only lines above a when keyword in a case statement with the when keyword.
Violation
-- comment 1
-- comment 2
-- comment 3
when wr_en =>
rd_en <= '0';
Fix
-- comment 1
-- comment 2
-- comment 3
when wr_en =>
rd_en <= '0';
case_200¶
This rule checks for a blank line below the => keyword.
Refer to the section Configuring Blank Lines for options regarding comments.
Violation
when 0 =>
a <= b;
Fix
when 0 =>
a <= b;