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- The DEBUG Package: MLG/ 2 January 1982
- ------------------
- PSL has some built-in debugging functions, but for a more powerful set
- one must load a debug package (Load Debug; in RLISP, (Load Debug) in
- LISP). It is described in the manual. This is a brief introduction
- to some of the functions in the supplementary Debug package; for more
- information on built-in functions do Help Mini-Trace; in RLISP [(Help
- MiniTrace) in LISP].
- [This help-file needs a LOT of work!]
- The following functions (all EXPRs) are defined:
- (they each redefine the functions, saving an old definition)
- (TR F1 ... Fn) Cause TRace message to be printed on entry to
- and exit from calls to the functions F1 ... Fn.
- (UNTR F1 ... Fn) Restore original definition. Does UNTRST
- automatically if necessary.
- (TRST F1 ... Fn) This traces interpreted functions to a deeper
- level by redeining the body of the function so
- that all assignments made with SETQ are printed.
- Calling TRST automatically also calls TR.
- (UNTRST F1 ... Fn) Restores the original definition.
- In addition, the following macros are available in the resident
- MiniTrace package.
- (BR F1 ... Fn) Cause BREAK on entry and on EXIT from function,
- permitting arguments and results to be examined
- and modified.
- (UNBR F1 ... Fn) Restore original definitions of the functions
- F1 ... Fn.
- Fluids:
- -------
- TrSpace!* Controls indentation, may need to be reset to 0
- in "funny" cases.
- !*NoTrArgs Set to T to suppress printing of arguments of
- traced functions.
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