App::EditorTools - Command line tool for Perl code refactoring

App::EditorTools provides the editortools command line program that enables programming editors (Vim, Emacs, etc.) to take advantage of some sophisticated Perl refactoring tools. The tools utilize PPI to analyze Perl code and make intelligent changes. As of this release, editortools is able to:

• Lexically Rename a Variable
• Introduce a Temporary Variable
• Rename the Package Based on the Path of the File

More refactoring tools are expected to be added in the future.

The Padre Perl editor team developed some very interesting PPI based refactoring tools for their editor. Working with the Padre team, those routines were abstracted into PPIx::EditorTools in order to make them available to alternative editors.

The initial implementation was developed for Vim. Pat Regan contributed the emacs bindings. Other editor bindings are encouraged/welcome.

The following lists the refactoring routines that are currently supported. Please see App::EditorTools::Vim or App::EditorTools::Emacs to learn how to install the bindings and the short cuts to use within your editor. The command line interface should only be needed to develop the editor bindings.

Each command expects the Perl program being edited to be piped in via STDIN. The refactored code is output on STDOUT.

RenameVariable

    editortools renamevariable -c col -l line -r newvar 

Renames the variable at column col and line line to newvar. Unlike editors typical find and replace, this is aware of lexical scope and only renames those variables within same scope. For example, given:

    my $x = 'text';
    for my $x (1..3){
        print $x;
    }
    print $x;

The command editortools renamevariable -c 3 -l 12 -r counter will result in:

    my $x = 'text';
    for my $counter (1..3){
        print $counter;
    }
    print $x;

IntroduceTemporaryVariable

    editortools introducetemporaryvariable -s line1,col1 -e line2,col2 -v varname

Removes the expression between line1,col1 and line2,col2 and replaces it with the temporary variable varname. For example, given:

    my $x = 1 + (10 / 12) + 15;
    my $y = 3 + (10 / 12) + 17;

The command editortools introducetemporaryvariable -s 1,13 -e 1,21 -v foo will yield:

    


    my $foo = (10 / 12);
    my $x = 1 + $foo + 15;
    my $y = 3 + $foo + 17;

RenamePackageFromPath

    editortools renamepackagefrompath -f filename 

Change the package declaration in the current file to reflect filename. Typically this is used when you want to rename a module. Move the module to a new location and pass the new filename to the editortools command. For example, if you are editing lib/App/EditorTools.pm the package declaration will be changed to package App::EditorTools;. At the moment there must be a valid package declaration in the file for this to work.

http://code-and-hacks.blogspot.com/2009/07/stealing-from-padre-for-vim-part-3.html, PPIx::EditorTools, Padre

Please report any bugs or suggestions at http://rt.cpan.org/NoAuth/Bugs.html?Dist=App-EditorTools

Mark Grimes, <mgrimes@cpan.org>

Bug fixes and contributions from:

• Shlomi Fish
• Pat Regan (emacs interface)

Copyright (C) 2010 by Mark Grimes

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.2 or, at your option, any later version of Perl 5 you may have available.