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package App::FindCallers; |
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# ABSTRACT: Find the callers of a given function in a directory tree |
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our $VERSION = '0.04'; |
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16611
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use 5.010; |
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use strict; |
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use warnings; |
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use File::Find; |
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529
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use PPI; |
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109204
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sub report { |
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my ($filename, $f, $nestlevel) = @_; |
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my $indent = " " x $nestlevel; |
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my $message = "Called from"; |
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if ($nestlevel) { |
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$message = "Defined in" |
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} |
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my $location = $filename . ":" . $f->line_number; |
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printf "%s%s %s() in %s\n", $indent, $message, $f->name, $location; |
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} |
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sub find_in_file { |
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my ($function, $filename, $cb) = @_; |
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$cb ||= \&report; |
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my $document = PPI::Document->new($filename); |
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5973
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unless ($document) { |
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say "Failed to parse $filename " . PPI::Document->errstr; |
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return; |
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} |
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1
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$document->index_locations; |
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my $references = $document->find(sub { |
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100
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$_[1]->isa('PPI::Token::Word') and $_[1]->content eq $function |
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1
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1040
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}); |
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1
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return unless $references; |
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1
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for my $f (@$references) { |
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my $nestlevel = 0; |
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3
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while ($f = $f->parent) { |
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# XXX this makes skip the declaration of said sub, |
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# but also makes it not detect recursive calls |
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14
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100
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100
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if ($f->isa('PPI::Statement::Sub') and $f->name ne $function) { |
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4
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85
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$cb->($filename, $f, $nestlevel); |
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4
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2616
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$nestlevel++; |
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} |
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}; |
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} |
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} |
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sub main { |
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my ($funcname, $directory, $cb) = @_; |
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$directory ||= '.'; |
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find({ wanted => sub { |
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if (/\.p[lm]$/) { |
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find_in_file $funcname, $_; |
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} |
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0
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}, follow => 1, no_chdir => 1 }, $directory); |
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} |
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61
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1; |
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63
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__END__ |