Interation Scheme Rules

iteration_scheme_100

This rule checks that a single space exists after the while keyword.

Violation

while(condition)

while      (condition)

Fix

while (condition)

while (condition)

iteration_scheme_101

This rule checks that a single space exists after the for keyword.

Violation

for      x in (31 downto 0) loop

Fix

for x in (31 downto 0) loop

iteration_scheme_300

This rule checks for indentation of the while keyword. Proper indentation enhances comprehension.

Violation

begin

while (temp /= 0) loop
    temp := temp/2;
  end loop;

Fix

begin

  while (temp /= 0) loop
    temp := temp/2;
  end loop;

iteration_scheme_301

This rule checks the indentation of the for keyword.

Violation

fifo_proc : process () is
begin

for index in 4 to 23 loop

  end loop;

end process;

Fix

fifo_proc : process () is
begin

  for index in 4 to 23 loop

  end loop;

end process;

iteration_scheme_500

This rule checks the while keyword has proper case.

Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.

Violation

WHILE (condition) loop

Fix

while (condition) loop

iteration_scheme_501

This rule checks the for keyword has proper case.

Refer to the section Configuring Uppercase and Lowercase Rules for information on changing the default case.

Violation

FOR x in (31 downto 0) loop

Fix

for x in (31 downto 0) loop