The OpenNET Project / Index page

[ новости /+++ | форум | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

B::Xref (3)
  • >> B::Xref (3) ( Разные man: Библиотечные вызовы )
  •  

    NAME

    B::Xref - Generates cross reference reports for Perl programs
     
    

    SYNOPSIS

    perl -MO=Xref[,OPTIONS] foo.pl  

    DESCRIPTION

    The B::Xref module is used to generate a cross reference listing of all definitions and uses of variables, subroutines and formats in a Perl program. It is implemented as a backend for the Perl compiler.

    The report generated is in the following format:

        File filename1
          Subroutine subname1
            Package package1
              object1        line numbers
              object2        line numbers
              ...
            Package package2
            ...
    
    

    Each File section reports on a single file. Each Subroutine section reports on a single subroutine apart from the special cases ``(definitions)'' and ``(main)''. These report, respectively, on subroutine definitions found by the initial symbol table walk and on the main part of the program or module external to all subroutines.

    The report is then grouped by the Package of each variable, subroutine or format with the special case ``(lexicals)'' meaning lexical variables. Each object name (implicitly qualified by its containing Package) includes its type character(s) at the beginning where possible. Lexical variables are easier to track and even included dereferencing information where possible.

    The "line numbers" are a comma separated list of line numbers (some preceded by code letters) where that object is used in some way. Simple uses aren't preceded by a code letter. Introductions (such as where a lexical is first defined with "my") are indicated with the letter ``i''. Subroutine and method calls are indicated by the character ``&''. Subroutine definitions are indicated by ``s'' and format definitions by ``f''.  

    OPTIONS

    Option words are separated by commas (not whitespace) and follow the usual conventions of compiler backend options.
    -oFILENAME
    Directs output to "FILENAME" instead of standard output.
    -r
    Raw output. Instead of producing a human-readable report, outputs a line in machine-readable form for each definition/use of a variable/sub/format.
    -d
    Don't output the ``(definitions)'' sections.
    -D[tO]
    (Internal) debug options, probably only useful if "-r" included. The "t" option prints the object on the top of the stack as it's being tracked. The "O" option prints each operator as it's being processed in the execution order of the program.
     

    BUGS

    Non-lexical variables are quite difficult to track through a program. Sometimes the type of a non-lexical variable's use is impossible to determine. Introductions of non-lexical non-scalars don't seem to be reported properly.  

    AUTHOR

    Malcolm Beattie, mbeattie@sable.ox.ac.uk.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    BUGS
    AUTHOR


    Поиск по тексту MAN-ов: 




    Партнёры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2024 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру