Action

The REDO statement will restart code inside a loop.

 

 

Syntax

REDO

 

 

Remarks

REDO must be used inside a DO-LOOP, WHILE-WEND or FOR-NEXT loop.

The code jump is always inside the current loop.

Some times you want to repeat some code inside a loop. You can solve this with a GOTO and a label but use of GOTO creates hard to understand code.

 

 

DO-LOOP
DO

REDO_WILL_JUMP_TO_THIS_POINT

 some code here

 some code here

LOOP

 

 

WHILE-WEND

WHILE <CONDIITON>

REDO_WILL_JUMP_TO_THIS_POINT

 some code here

 some code here

WEND

 

 

FOR-NEXT

FOR VAR=START TO END

REDO_WILL_JUMP_TO_THIS_POINT

 some code here

 some code here

NEXT

 

 

 

See also

EXIT , CONTINUE

 

 

Example

'-------------------------------------------------------------------------------------------------------------
'                                   REDO and CONTINUE example
'
'-------------------------------------------------------------------------------------------------------------
$regfile = "m128def.dat"
$hwstack = 32
$swstack = 16
$FrameSize = 24
 
 
dim b as byte
const test = 0
 
#if test = 0
  for b = 1 to 10
'when REDO is used, the code will continue here
    print b
    if b = 3 then
        continue                                             ' when b becomes 3,  the code will continue at the NEXT statement
    end if
    if b = 9 then exit for
    if b = 8 then
        redo                                               ' when b becomes 8, the code will continue after the FOR statement, it will not increase the variable B !
    'so in this example the loop will be forever
    end if
    print b
  'code continues here when CONTINUE is used
  next
 
#elseif test = 1
  b = 0
  do
    incr b
    if b = 2 then
        continue
    elseif b = 3 then
        redo
    end if
  loop until b > 5
 
#elseif test = 2
  b = 0
  while b < 5
    incr b
    if b = 2 then
        continue
    elseif b = 3 then
        redo
    end if
  wend
#endif
end