The SCL Debugger

MACEXPAND

Expands macro calls

Abbreviation:

MACX

Syntax
Details
Example

Syntax

MACEXPAND line-num

line-num: is the number of the program line that contains either a macro invocation or a macro variable reference to expand.

Details

The MACEXPAND command expands macro invocations and macro variables. The expansion is displayed in the debugger window. If the line does not contain a macro invocation or a macro variable reference, then the MACEXPAND command is ignored.

Example

In this example, the program contains the macro VALAMNT:

%macro valamnt(amount);
  if amount <0 or amount >500 then
     do;
       erroron amount;
       _msg_='Amount must be between $0 and $500.';
       stop;
     end;
  else erroroff amount;
%mend valamnt;

Line 33 of the SCL program calls the macro:

%valamnt(amt)

After entering 250 into the Amount control, enter in the debugger window:

DEBUG> macx 33

The debugger window displays the following output:

AMOUNT
$T0 = AMOUNT < 0
$T1 = AMOUNT > 500
$T2 = $T0 OR $T1
IF $T2 ==  0 THEN #24 ERRORON(AMOUNT)
_MSG_ = 'Amount must be between $0 and $500.'
STOP
JUMP #26
ERROROFF(AMOUNT)

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