The expressions specifying the type of information to be displayed. These expressions are interpreted differently, depending on the keyword selected. If no keyword is selected, INFO displays basic information for its parameters.
Displaysinformation on many aspects of the current PV-WAVE session.
The expressions specifying the type of information to be displayed. These expressions are interpreted differently, depending on the keyword selected. If no keyword is selected, INFO displays basic information for its parameters.
Displays the breakpoint table containing the name of the program module, line number and source file name of each breakpoint. If Breakpoints is set to a specified variable, the information is stored in a string array of the variable name rather than displayed. Calls
Displays the current procedure's call stack containing the name of the program module, source file name, and line number. If Calls is set to a specified variable, the information is stored in a string array of the variable name rather than displayed. The first array element contains the information about the caller of the INFO command, the second element contains information about its caller, and so on.
NOTE: Calls is useful for programs that require traceback information.
Displays the depth of the current procedure's call stack. If Depth is set to a specified variable, the depth of the procedure call stack is stored in a long scalar of the variable name rather than displayed.Device
Lists all available graphics devices, and displays information about the currently selected graphics device. If Device is set to a specified variable, the list of all available graphics devices is stored in a string array of the variable name rather than displayed.Files
Displays information about file units depending on the input parameters supplied in the calling sequence. If input parameters are supplied, the value for Files is taken to be integer file-unit numbers, and information on the specified units is displayed. If no input parameters are supplied, information about all open file units is displayed.
If Names is used, Files only displays information for the specified files.
If nonzero, displays all information about specified variable elements including structures, lists, and associative arrays.Functions
Displays a list of all currently available user functions. If Functions is set to a specified variable, the function names are stored in a string array of the variable name rather than displayed.Keys
Displays current function key definitions as set using the DEFINE_KEY procedure:
If no input parameters are supplied, information on all function keys is displayed.
Specifies the level of the program for which information is to be displayed. This keyword is used in conjunction with the keywords Calls, Parameters, Routines, Traceback, Upvar, and Variables.
0, the level is counted from the $MAIN$ level to the current procedure. If n
0, the level count is relative, counting from the current procedure back to the $MAIN$ level.
Reports the amount of dynamic memory currently in use by the PV-WAVE session, and the number of times dynamic memory has been allocated and deallocated. If Memory is set to a specified variable, it stores the information in a three-element long array of the variable name.Names
Specifies patterns to be matched against strings which are to be displayed. This keyword is used in conjunction with other keywords. Patterns specified by Names can contain the following wild card characters.
Matches any string.? (question mark)
Matches any character.
Displays the list of all parameters for the current procedure or function. The procedure or function must be specified as an input parameter for INFO, or Level must be used; otherwise, Parameters defaults to the $MAIN$ program level. If Parameters is set to a specified variable, the parameter names are stored in a string array of the variable name rather than displayed.
If Names is used, only parameters with names matching those specified are displayed.
Displays a list of all procedures available in the current session. If Procedures is set to a specified variable, the procedure names are stored in a string array of the variable name rather than displayed.
Displays the currently saved commands. Input parameters are ignored.Routines
Displays a list of all compiled procedures and functions with their parameter names. Keywords accepted by each module are enclosed in quotation marks. If Routines is set to a specified variable, the procedure and function names are stored in a string array of the variable name rather than displayed. The parameter names associated with the functions and procedures are not stored in the string array.
If Names is used, only the procedures and functions with names matching those specified are displayed.
Displays information on the structure of variables depending on the input parameters specified in the calling sequence. If input parameters are supplied, the structure of those expressions is displayed. If no input parameters are supplied, all currently defined structures are shown.Sysstruct
Displays information on all system structures (structures that begin with `!'). This keyword is a subset of the Structures keyword.System_Variables
Displays information on all system variables. Input parameters are ignored. If System_Variables is set to a specified variable, the system variable names are stored in a string array rather than displayed.
Displays the call stack of the current procedure, which contains the program module name, source file name, and the line number. If Traceback is set to a specified variable, the information is stored in a string array of the variable name rather than displayed. The first array element contains the information about the caller of the INFO command, the second element contains information about its caller, and so on.
Displays the name of a variable from the previous program level that was passed as a parameter into the procedure or function that calls INFO. If Upvar is a string array, the name of the variable passed between the program levels is stored rather than displayed. If the variable doesn't exist on the previous program level, an empty string is returned.
Displays information on the regular user-defined structures (structures that do not begin with `!'). This keyword is a subset of the Structures keyword.Variables
Displays a list of all variables of the current function or procedure. The procedure or function must be specified either by using the input parameter of the INFO command, or by using Level; otherwise, Variables defaults to the $MAIN$ program level. If Variables is set to a specified variable, the procedure or function variable names are stored in a string array rather than displayed.
If Names is used, only variables with names matching those specified are displayed.
If no input parameters or keywords are specified, INFO shows the current nesting of procedures and functions, all current variables at the current program level, and open files.
For more information and examples, see the PV-WAVE Programmer's Guide.
