Xref
Perl compiler backend that generates a cross-reference listing of variables, subroutines, and formats in a Perl program. Results are grouped by file, then subroutine, then package, then objects within the package with line numbers. The line numbers are given as a comma-separated list. A line number may be preceded by one of the following code letters:
| Code | Meaning |
|---|---|
%
| Subroutine or method call |
f
| Format definition |
i
| Introduction, e.g., a lexical defined with my
|
s
| Subroutine definition |
Invoke B::Xref like this:
perl -MO=Xref[,options] program
program is the Perl program whose cross-reference you want. Options are separated by commas and follow normal backend option conventions. The possible options are:
- -D
- Specifies internal debug options. Most useful if specified with -r option. Debug options are:
O- Prints each operator as it's being processed, in the execution order of the program.
t- Prints the object on the top of the stack as it is being tracked.
- -ofilename
- Sends output to filename instead of STDOUT.
- -r
- Produces raw output in machine-readable form for each definition or use of a variable, subroutine, or format.