MACRO -- Defines a sequence of DEBUG commands that you can invoke using a
debugger-name.
FORMAT
Macro debugger-name action-list
REQUIRED ARGUMENTS
debugger-name Any legal DEBUG name. All such symbols begin with an accent
grave (`).
action-list Any legal DEBUG action-list. See the "action-list" listing
earlier in this encyclopedia for details.
OPTIONAL ARGUMENTS
None.
DESCRIPTION
Use the MACRO command to create a macro (i.e., script) of DEBUG commands.
For instance, you might create a macro that examines the values of several
variables. Such a macro might be defined as follows:
> MACRO `m1 [EXAMINE ponce; PRINT ponts, BREAKPOINT r3\]
You can invoke a macro anywhere you could use a normal DEBUG command. To
invoke the macro, simply specify its name, for instance:
> `m1
Note that you cannot abbreviate a macro name. Also, don't forget that a
macro name must begin with an accent grave (`). The name you choose cannot
duplicate that of an existing debugger variable or debugger definition, though
it can be the name of an existing macro. By picking the name of an existing
macro, you delete the old definition.
DEBUG does not check macro definitions for illegal commands until you actually
invoke the macro.
You can use macros as part of other macro definitions, but you cannot create a
recursive macro (i.e., a macro that calls itself).
By default, macro definitions disappear when the DEBUG session ends. Such a
pity when you've written a long macro. Therefore, you might consider storing
the macro definitions in a DEBUG startup file.
The Special `CR Macro
When you press the <RETURN> key on a blank DEBUG input line, DEBUG
automatically invokes a special macro named `CR if it is defined. By
default, `CR is not defined and pressing the <RETURN> key is a no-op;
however, you may specify a definition for it. For example, the most
common use of `CR is to cause DEBUG to STEP when you input a blank line.
To accomplish that, simply define the following macro:
> MACRO `CR [STEP]
For full details, see Chapter 3 of the DOMAIN Language Level Debugger
Reference manual.