Page 113 - DCAP507_SYSTEM_SOFTWARE

Unit 7: Macro Language

 When ENDW is encountered, the macro processor returns to the previous Notes
WHILE, reevaluates the Boolean expression, and takes action again.

 FALSE
 The macro processor skips ahead in DEFTAB until it locates the next ENDW
statement and then recommences normal macro development.

Self Assessment

Fill in the blanks:

14. When an IF statement is encountered throughout the expansion of a macro, the specified
.............................. is evaluated.
15. When ENDW is encountered, the macro processor returns to the previous ..............................,
reevaluates the Boolean expression, and takes action again.

7.4 Summary

 A macro instruction (macro) is just a notational expediency for the programmer to write
a shorthand edition of a program.

 A macro processor functions fundamentally engross the replacement of one group of
characters or lines for another.
 The first MACRO statement determines the start of macro definition.
 The macro name and parameters define the outline or prototype for the macroinstruction
utilized by the programmer.
 A macro invocation statement (a macro call) provides the name of the macroinstruction
being summoned and the arguments in mounting the macro.
 Each macro invocation statement will be expanded into the statements that produces the
body of the macro.
 Most Macro Processor permits parameters to be concatenated with other character strings.

 Labels in the macro body may reason "duplicate labels" problem if the macro is invocated
and expanded multiple times.
 Parameters and arguments are connected as per their positions in the macro prototype
and invocation.

7.5 Keywords

Labels: Labels in the macro body may reason "duplicate labels" problem if the macro is invocated
and expanded multiple times.
Macro Expansion: Each macro invocation statement will be expanded into the statements that
produces the body of the macro.
Macro Instruction: A macro instruction (macro) is just a notational expediency for the
programmer to write a shorthand edition of a program.

Macro Invocation: A macro invocation statement (a macro call) provides the name of the
macroinstruction being summoned and the arguments in mounting the macro.
Macro Processor: A macro processor functions fundamentally engross the replacement of one
group of characters or lines for another.

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