| SAS Component Language: Reference |
The SAS Component
Language Debugger (SCL Debugger) is a powerful window-oriented utility that
can interactively monitor the execution of SCL programs, enabling you to
locate run-time errors. The SCL debugger also enables you to suspend the execution
of one program that is part of a series of programs and to execute the other
programs in the series. The SCL debugger interface consists of two windows,
the debugger SOURCE window and the debugger MESSAGE window. The debugger displays
the source program, specifying which line is executing, in the SOURCE window.
The MESSAGE window contains the debugger command line, as well as the results
of any debugger commands.
The debugger can
- suspend execution at selected statements and programs.
The point at which execution is suspended is called a breakpoint. Breakpoints
can be set based on the evaluation of an expression.
- monitor the values of selected variables. This
is called a watch variable. When a watch variable is set to some specified
value, the debugger stops executing the program at the statement where this
occurred.
- set or query the value of SCL variables.
- display the attributes of
variables.
- bypass a group of statements.
- continue execution of a halted
program.
- step over statements and function calls.
- display the execution stacks of active
programs.
- display the values of the arguments passed into
a program.
- display an expansion of the program's macros and
macro variable references.
- display each statement as it executes.
- execute commands
conditionally.
- retrieve previous commands.
- evaluate expressions, which can include functions,
in the debugger command line.
- process statements that use dot notation.
- create and use SAS macros that contain
debugger
commands.
- display help for individual commands.
Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
