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package LatexIndent::OptionalArgument;
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# See http://www.gnu.org/licenses/.
#
# Chris Hughes, 2017
#
# For all communication, please visit: https://github.com/cmhughes/latexindent.pl
use strict;
use warnings;
use LatexIndent::Tokens qw/%tokens/;
use LatexIndent::TrailingComments qw/$trailingCommentRegExp/;
use LatexIndent::Switches qw/$is_t_switch_active $is_tt_switch_active/;
use LatexIndent::LogFile qw/$logger/;
use LatexIndent::IfElseFi qw/$ifElseFiBasicRegExp/;
use LatexIndent::Special qw/$specialBeginBasicRegExp/;
use Exporter qw/import/;
our @ISA = "LatexIndent::Document"; # class inheritance, Programming Perl, pg 321
our @EXPORT_OK = qw/find_optional_arguments/;
our $optionalArgumentCounter;
our $optArgRegExp = qr/
(?<!\\) # not immediately pre-ceeded by \
(
\[
\h*
(\R*)
)
(.*?)
(\R*)
(?<!\\) # not immediately pre-ceeded by \
(
\] # [optional arguments]
)
(\h*)
(\R)?
/sx;
sub find_optional_arguments{
my $self = shift;
# pick out the optional arguments
while(${$self}{body} =~ m/$optArgRegExp\h*($trailingCommentRegExp)*(.*)/s){
# log file output
$logger->trace("*Optional argument found, body in ${$self}{name}") if $is_t_switch_active;
$logger->trace("(last argument)") if($9 eq '' and $is_t_switch_active);
${$self}{body} =~ s/
$optArgRegExp(\h*)($trailingCommentRegExp)*(.*)
/
# create a new Optional Argument object
my $optionalArg = LatexIndent::OptionalArgument->new(begin=>$1,
name=>${$self}{name}.":optionalArgument",
nameForIndentationSettings=>${$self}{parent},
parent=>${$self}{parent},
body=>$3.($4?$4:q()),
end=>$5,
linebreaksAtEnd=>{
begin=>$2?1:0,
body=>$4?1:0,
end=>$7?1:0,
},
aliases=>{
# begin statements
BeginStartsOnOwnLine=>"LSqBStartsOnOwnLine",
# body statements
BodyStartsOnOwnLine=>"OptArgBodyStartsOnOwnLine",
# end statements
EndStartsOnOwnLine=>"RSqBStartsOnOwnLine",
# after end statements
EndFinishesWithLineBreak=>"RSqBFinishesWithLineBreak",
},
modifyLineBreaksYamlName=>"optionalArguments",
# the last argument (determined by $10 eq '') needs information from the argument container object
endImmediatelyFollowedByComment=>($10 eq '')?${$self}{endImmediatelyFollowedByComment}:($9?1:0),
horizontalTrailingSpace=>$6?$6:q(),
);
# the settings and storage of most objects has a lot in common
$self->get_settings_and_store_new_object($optionalArg);
${@{${$self}{children}}[-1]}{replacementText}.($8?$8:q()).($9?$9:q()).($10?$10:q());
/xseg;
}
}
sub get_object_attribute_for_indentation_settings{
my $self = shift;
return ${$self}{modifyLineBreaksYamlName};
}
sub create_unique_id{
my $self = shift;
$optionalArgumentCounter++;
${$self}{id} = "$tokens{optionalArguments}$optionalArgumentCounter";
return;
}
sub tasks_particular_to_each_object{
my $self = shift;
# search for ifElseFi blocks
$self->find_ifelsefi if ${$self}{body} =~ m/$ifElseFiBasicRegExp/s;
# search for special begin/end
$self->find_special if ${$self}{body} =~ m/$specialBeginBasicRegExp/s;
}
1;
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