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package LatexIndent::Else;
# 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_m_switch_active $is_t_switch_active $is_tt_switch_active/;
use LatexIndent::LogFile qw/$logger/;
use LatexIndent::Braces qw/$braceBracketRegExpBasic/;
use LatexIndent::Special qw/$specialBeginAndBracesBracketsBasicRegExp/;
use LatexIndent::Heading qw/$allHeadingsRegexp/;
use Exporter qw/import/;
our @ISA = "LatexIndent::Document"; # class inheritance, Programming Perl, pg 321
our @EXPORT_OK = qw/check_for_else_statement/;
our $elseCounter;
sub check_for_else_statement{
my $self = shift;
# we call the else routine from different places; see IfElseFi.pm and Special.pm
my %input = @_;
# store the regular expresssion for matching and replacing the \else statements
my $elseRegExp = qr/
(
$input{elseNameRegExp}
\h* # possible horizontal space
(\R*) # possible line breaks after \else statement
)
(
(?:
(?!$input{elseNameRegExp}).
)*? # body, which can't include another \else
)
$
/sx;
$logger->trace("*Looking for $input{elseNameRegExp} statement (${$self}{name})") if $is_t_switch_active;
while(${$self}{body} =~ m/$elseRegExp(\h*)($trailingCommentRegExp)?/){
${$self}{body} =~ s/$elseRegExp(\h*)($trailingCommentRegExp)?
/
# create a new Else object
my $else = LatexIndent::Else->new(begin=>$1,
name=>${$self}{name},
storageNameAppend=>$input{storageNameAppend},
body=>$3,
end=>q(),
linebreaksAtEnd=>{
begin=>$2?1:0,
body=>0,
end=>0,
},
aliases=>{
# begin statements
BeginStartsOnOwnLine=>$input{ElseStartsOnOwnLine},
# end statements
BodyStartsOnOwnLine=>$input{ElseFinishesWithLineBreak},
},
modifyLineBreaksYamlName=>${$self}{modifyLineBreaksYamlName},
endImmediatelyFollowedByComment=>0,
horizontalTrailingSpace=>q(),
# mandatory and optional arguments have a parent, which we need
# to detail for double back slash poly-switches
# (see test-cases alignment command-align.tex, for example)
parent=>(${$self}{parent}?${$self}{parent}:"none"),
);
# log file output
$logger->trace("*$input{logName} found: ${$self}{name}")if $is_t_switch_active;
# the settings and storage of most objects has a lot in common
$self->get_settings_and_store_new_object($else);
${@{${$self}{children}}[-1]}{replacementText};
/xse;
}
return;
}
sub remove_line_breaks_begin{
# the \else command can need a trailing white space if the line breaks have been removed after it and
# there is no white space
my $self = shift;
my $BodyStringLogFile = ${$self}{aliases}{BodyStartsOnOwnLine}||"BodyStartsOnOwnLine";
$logger->trace("Removing linebreak at the end of begin (see $BodyStringLogFile)");
${$self}{begin} =~ s/\R*$//sx;
${$self}{begin} .= " " unless(${$self}{begin} =~ m/\h$/s or ${$self}{body} =~ m/^\h/s or ${$self}{body} =~ m/^\R/s );
${$self}{linebreaksAtEnd}{begin} = 0;
}
sub tasks_particular_to_each_object{
my $self = shift;
# search for headings (important to do this before looking for commands!)
$self->find_heading if ${$self}{body} =~ m/$allHeadingsRegexp/s;
# search for commands and special code blocks
$self->find_commands_or_key_equals_values_braces_and_special if ${$self}{body} =~ m/$specialBeginAndBracesBracketsBasicRegExp/s;
# search for arguments
$self->find_opt_mand_arguments if ${$self}{body} =~ m/$braceBracketRegExpBasic/s;
return;
}
sub yaml_get_indentation_information{
return q();
}
sub create_unique_id{
my $self = shift;
$elseCounter++;
${$self}{id} = "$tokens{else}$elseCounter";
return;
}
1;
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