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Wrote documentation generator for documenting exception classes
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#!/usr/bin/env perl | ||
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use strict; | ||
use warnings; | ||
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use Moose; | ||
use Class::Load 0.07 qw(load_class); | ||
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my $dir; | ||
my $path = 'lib/Moose/Exception/'; | ||
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opendir( $dir, $path) or die $!; | ||
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my $number = 0; | ||
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while( my $file = readdir($dir) ) | ||
{ | ||
my $exceptionsToMsgHashRef = getExceptionsToMessages(); | ||
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my %exceptions = %$exceptionsToMsgHashRef; | ||
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my ($exception, $description, $attributesText, $superclasses, $consumedRoles, $exceptionMessages); | ||
my (@attributes, @roles, @superClasses, @rolesNames, @superClassNames); | ||
if( !(-d 'lib/Moose/Exception/'.$file) ) | ||
{ | ||
$file =~ s/\.pm//i; | ||
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$exception = "Moose::Exception::".$file; | ||
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load_class( $exception ); | ||
my $metaClass = Class::MOP::class_of( $exception ); | ||
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my @superClasses = $metaClass->superclasses; | ||
my @roles = $metaClass->calculate_all_roles; | ||
my @attributes = $metaClass->get_all_attributes; | ||
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my $fileHandle; | ||
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@rolesNames = map { | ||
my $name = $_->name; | ||
if( $name =~ /\|/ ) { | ||
undef; | ||
} else { | ||
$name; | ||
} | ||
} @roles; | ||
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$superclasses = placeCommasAndAnd( @superClasses ); | ||
$consumedRoles = placeCommasAndAnd( @rolesNames ); | ||
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foreach( @attributes ) | ||
{ | ||
my $attribute = $_; | ||
my $name = $attribute->name; | ||
my $traits; # = $attribute->has_applied_traits; | ||
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if( $attribute->has_applied_traits ) { | ||
my @traitsArray = @{$attribute->applied_traits}; | ||
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$traits = "has traits of "; | ||
my $traitsStr = placeCommasAndAnd( @traitsArray ); | ||
$traits .= $traitsStr; | ||
} | ||
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my ( $tc, $type_constraint ) = ( $attribute->type_constraint->name, "isa " ); | ||
if( $tc =~ /::/ && !(defined $traits) ) { | ||
$type_constraint .= "L<".$tc.">"; | ||
} else { | ||
$type_constraint .= $tc; | ||
} | ||
my $readOrWrite = ( $attribute->has_writer ? 'is read-write' : 'is read-only' ); | ||
my $required = ( $attribute->is_required ? 'is required' : 'is optional' ); | ||
my $predicate = ( $attribute->has_predicate ? 'has a predicate C<'.$attribute->predicate.'>': undef ); | ||
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my $default; | ||
if( $attribute->has_default ) { | ||
if( $tc eq "Str" ) { | ||
$default = 'has a default value "'.$attribute->default.'"'; | ||
} | ||
else { | ||
$default = 'has a default value '.$attribute->default; | ||
} | ||
} | ||
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my $handlesText; | ||
if( $attribute->has_handles ) { | ||
my %handles = %{$attribute->handles}; | ||
my @keys = keys( %handles ); | ||
$handlesText = "This attribute has handles as follows:"; | ||
for( my $i = 0; $i <= $#keys; $i++ ) { | ||
next | ||
if( $keys[$i] =~ /^_/ ); | ||
my $strText = sprintf("\n %-25s=> %s", $keys[$i], $handles{$keys[$i]}); | ||
$handlesText .= $strText; | ||
} | ||
} | ||
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$exceptionMessages = "=back\n\n=head4 Sample Error Message"; | ||
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my $msgOrMsgRef = $exceptions{$file}; | ||
if( ref $msgOrMsgRef eq "ARRAY" ) { | ||
$exceptionMessages .= "s:\n\n"; | ||
my @array = @$msgOrMsgRef; | ||
foreach( @array ) { | ||
$exceptionMessages .= " $_"; | ||
} | ||
} else { | ||
$exceptionMessages .= ":\n\n"; | ||
$exceptionMessages .= " ".$exceptions{$file}; | ||
} | ||
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$exceptionMessages .= "\n=over 4\n\n=back\n\n=cut\n\n"; | ||
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$attributesText .= "=item B<< \$exception->$name >>\n\n"; | ||
if( $attribute->has_documentation ) { | ||
$attributesText .= $attribute->documentation."\n\n"; | ||
} else { | ||
$attributesText .= "This attribute $readOrWrite, $type_constraint". | ||
( defined $predicate ? ", $predicate" : '' ). | ||
( defined $default ? ", $default" : ''). | ||
" and $required.". | ||
( defined $handlesText && ( $handlesText ne "This attribute has handles as follows:\n" ) ? "\n\n$handlesText" : '' )."\n\n"; | ||
} | ||
} | ||
my $roleVerb = "consume".( $#roles == 0 ? 's role' : ' roles' ); | ||
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my $text = "# ABSTRACT: $file class | ||
__END__ | ||
=pod | ||
=head1 DESCRIPTION | ||
This class is a subclass of $superclasses". | ||
( defined $consumedRoles ? " and $roleVerb $consumedRoles.": '.' ). | ||
" | ||
=head1 ATTRIBUTES | ||
=over 4 | ||
". | ||
( defined $attributesText ? "$attributesText" : '' ); | ||
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$text = fixLineLength( $text ); | ||
$text .= $exceptionMessages; | ||
$number++; | ||
$text =~ s/\s+$//; | ||
print "\n$text\n"; | ||
} | ||
} | ||
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sub fixLineLength { | ||
my $doc = shift; | ||
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my @tokens = split /\n/, $doc; | ||
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my $str; | ||
foreach( @tokens ) { | ||
$str .= (shortenToEighty($_)."\n"); | ||
} | ||
return $str."\n"; | ||
} | ||
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sub shortenToEighty { | ||
my ($str) = @_; | ||
if( length $str > 80 && length $str != 81 ) { | ||
my $s1 = substr($str, 0, 80); | ||
my $s2 = substr($str, 80); | ||
my $substr1 = substr($s1, length($s1) - 1 ); | ||
my $substr2 = substr($s2, 0, 1); | ||
if( ( $substr1 =~ /[\(\)\[\w:,'"<>\]\$]/ ) && ( $substr2 =~ /[\$'"\(\)\[<>\w:,\]]/ ) ) { | ||
if( $s1 =~ s/\s([\(\)\[<:\w+>,"'\]\$]+)$// ) { | ||
$s2 = $1.$s2; | ||
my $s3 = shortenToEighty( $s2 ); | ||
if( $s2 ne $s3 ) { | ||
return "$s1\n$s3"; | ||
} else { | ||
return "$s1\n$s2"; | ||
} | ||
} | ||
} | ||
return "$s1\n$s2"; | ||
} | ||
else | ||
{ | ||
return $str; | ||
} | ||
} | ||
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sub placeCommasAndAnd { | ||
my @array = @_; | ||
my ($str, $lastUndef); | ||
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for( my $i = 0; $i <= $#array; $i++ ) { | ||
my $element = $array[$i]; | ||
if( !(defined $element ) ) { | ||
$lastUndef = 1; | ||
next; | ||
} | ||
if ( $i == 0 || ( $lastUndef && $i == 1 ) ) { | ||
$str .= "L<$element>"; | ||
} elsif( $i == $#array ) { | ||
$str .= " and L<$element>"; | ||
} else { | ||
$str .= ", L<$element>"; | ||
} | ||
$lastUndef = 0; | ||
} | ||
return $str; | ||
} | ||
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sub getExceptionsToMessages { | ||
my $testDir; | ||
my $testPath = 't/exceptions/'; | ||
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my %hash; | ||
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opendir( $testDir, $testPath ) or die $!; | ||
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my $file; | ||
while( $file = readdir( $testDir ) ) { | ||
my $fileHandle; | ||
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open( $fileHandle, "t/exceptions/$file" ) or die $!; | ||
my ($message, $exception); | ||
while( <$fileHandle> ) { | ||
if( /like\($/ ) { | ||
my $exceptionVar = <$fileHandle>; | ||
if( $exceptionVar =~ /\$exception,$/ ) { | ||
$message = <$fileHandle>; | ||
if( $message =~ q/\$\w+/ || ( $message =~ /\\\(\w+\\\)/) ) { | ||
my $garbage = <$fileHandle>; | ||
$message = <$fileHandle>; | ||
$message =~ s/^\s+#//; | ||
} | ||
$message =~ s!^\s*qr(/|\!)(\^)?(\\Q)?!!; | ||
$message =~ s!(/|\!),$!!; | ||
} | ||
} elsif( /isa_ok\($/ ) { | ||
my $exceptionVar = <$fileHandle>; | ||
if( $exceptionVar =~ /\$exception,$/ ) { | ||
$exception = <$fileHandle>; | ||
if( $exception =~ /Moose::Exception::(\w+)/ ) { | ||
$exception = $1; | ||
} | ||
} | ||
} | ||
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if( ( defined $exception ) && ( defined $message ) ) { | ||
if( exists $hash{$exception} && | ||
( ref $hash{$exception} eq "ARRAY" ) ) { | ||
my @array = @{$hash{$exception}}; | ||
push @array, $message; | ||
$hash{$exception} = \@array; | ||
} elsif( exists $hash{$exception} && | ||
( $hash{$exception} ne $message ) ) { | ||
my $msg = $hash{$exception}; | ||
my $arrayRef = [ $msg, $message ]; | ||
$hash{$exception} = $arrayRef; | ||
} else { | ||
$hash{$exception} = $message; | ||
} | ||
$exception = undef; | ||
$message = undef; | ||
} | ||
} | ||
close $fileHandle; | ||
} | ||
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return \%hash; | ||
} |