Positional operands

You can use a positional operand to pass a value into a macro definition through the corresponding positional parameter declared for the definition. Declare a positional parameter in a macro definition when you want to change the value passed at every call to that macro definition.

You can use a positional operand to pass a value into a macro definition through the corresponding positional parameter declared for the definition. Declare a positional parameter in a macro definition when you want to change the value passed at every call to that macro definition.

You can also use a positional operand to pass a value to the system variable symbol &SYSLIST. If &SYSLIST, with the applicable subscripts, is specified in a macro definition, you do not need to declare positional parameters in the prototype statement of the macro definition. You can thus use &SYSLIST to refer to any positional operand. This allows you to vary the number of operands you specify each time you call the same macro definition.

The positional operands of a macro instruction must be specified in the same order as the positional parameters declared in the called macro definition.

Each positional operand constitutes a character string. This character string is the value passed through a positional parameter into a macro definition.

The specification for each positional parameter in the prototype statement definition must be a valid variable symbol. Values are assigned (see  1 ) to the positional operands by the corresponding positional arguments (see  2 ) specified in the macro instruction that calls the macro definition.

Notes:

1. An omitted operand has a null character value.
2. Each positional operand can be up to 4064 characters long.
3. If the DBCS assembler option is specified, the positional operand can be a string containing double-byte data. The string does not need to be quoted.

         MACCALL         VALUE,9,8
         MACCALL         &A,'QUOTED STRING'
         MACCALL         EXPR+2,,SYMBOL
         MACCALL         (A,B,C,D,E),(1,2,3,4)
         MACCALL         &A,'<.S.T.R.I.N.G>'