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package LatexIndent::Command;
# 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 $is_tt_switch_active/;
use LatexIndent::GetYamlSettings qw/%masterSettings/;
use LatexIndent::LogFile qw/$logger/;
use Data::Dumper;
use Exporter qw/import/;
our @ISA = "LatexIndent::Document"; # class inheritance, Programming Perl, pg 321
our @EXPORT_OK = qw/construct_command_regexp $commandRegExp $commandRegExpTrailingComment $optAndMandAndRoundBracketsRegExpLineBreaks/;
our $commandCounter;
our $commandRegExp;
our $commandRegExpTrailingComment;
our $optAndMandAndRoundBracketsRegExp;
our $optAndMandAndRoundBracketsRegExpLineBreaks;
# store the regular expresssion for matching and replacing
sub construct_command_regexp{
my $self = shift;
$optAndMandAndRoundBracketsRegExp = $self->get_arguments_regexp(
roundBrackets=>${$masterSettings{commandCodeBlocks}}{roundParenthesesAllowed},
stringBetweenArguments=>1);
$optAndMandAndRoundBracketsRegExpLineBreaks = $self->get_arguments_regexp(
roundBrackets=>${$masterSettings{commandCodeBlocks}}{roundParenthesesAllowed},
mode=>"lineBreaksAtEnd",
stringBetweenArguments=>1);
# put together a list of the special command names (this was mostly motivated by the \@ifnextchar[ issue)
my %commandNameSpecial = %{${$masterSettings{commandCodeBlocks}}{commandNameSpecial}};
my $commandNameSpecialRegExp = q();
while( my ($commandName,$yesNo)= each %commandNameSpecial){
# change + and - to escaped characters
$commandName =~ s/\+/\\+/g;
$commandName =~ s/\-/\\-/g;
$commandName =~ s/\[/\\[/g;
# form the regexp
$commandNameSpecialRegExp .= ($commandNameSpecialRegExp eq '' ? q() : "|").$commandName if $yesNo;
}
# details to log file
$logger->trace("*The special command names regexp is: $commandNameSpecialRegExp (see commandNameSpecial)") if $is_t_switch_active;
# construct the command regexp
$commandRegExp = qr/
(\\|\\@|@)
(
[+a-zA-Z@\*0-9_\:]+?|$commandNameSpecialRegExp # lowercase|uppercase letters, @, *, numbers
)
(\h*)
(\R*)?
($optAndMandAndRoundBracketsRegExp)
(\R)?
/sx;
# command regexp with trailing comment
$commandRegExpTrailingComment = qr/$commandRegExp(\h*)((?:$trailingCommentRegExp\h*)*)/;
}
sub tasks_particular_to_each_object{
my $self = shift;
# check for adding/removing linebreaks before =
$self->check_linebreaks_before_equals;
# search for arguments
$self->find_opt_mand_arguments;
# situation: ${${$self}{linebreaksAtEnd}}{end} == 1, and the argument container object
# still contains a linebreak at the end; in this case, we need to remove the linebreak from
# the container object
if(${${$self}{linebreaksAtEnd}}{end} == 1
and ${${${$self}{children}}[0]}{body} =~ m/\R$/s
and !${$self}{endImmediatelyFollowedByComment}){
$logger->trace("Removing linebreak from argument container of ${$self}{name}") if $is_t_switch_active;
${${${$self}{children}}[0]}{body} =~ s/\R$//s;
${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0;
}
# situation: ${${$self}{linebreaksAtEnd}}{end} == 1 and the last argument specifies
# EndFinishesWithLineBreaks = 0 (see test-cases/commands/just-one-command-mod10.tex)
if(${${$self}{linebreaksAtEnd}}{end} == 1
and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak}
and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} == -1
){
$logger->trace("Switching linebreaksAtEnd{end} to be 0 in command ${$self}{name} as last argument specifies EndFinishesWithLineBreak == 0") if $is_t_switch_active;
${${$self}{linebreaksAtEnd}}{end} = 0;
${$self}{EndFinishesWithLineBreak} = -1;
}
# if the last argument finishes with a linebreak, it won't get interpreted at
# the right time (see test-cases/commands/commands-one-line-nested-simple-mod1.tex for example)
# so this little bit fixes it
if(${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} and ${${$self}{linebreaksAtEnd}}{end} == 0
and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak}
and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} >= 1
and !${$self}{endImmediatelyFollowedByComment}){
# update the Command object
$logger->trace("Adjusting linebreaksAtEnd in command ${$self}{name}") if $is_t_switch_active;
${${$self}{linebreaksAtEnd}}{end} = ${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end};
${$self}{replacementText} .= "\n";
# if the last argument has EndFinishesWithLineBreak == 3
if (${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} == 3 ){
my $EndStringLogFile = ${${${${$self}{children}}[0]}{children}[-1]}{aliases}{EndFinishesWithLineBreak}||"EndFinishesWithLineBreak";
$logger->trace("Adding another blank line to replacement text for ${$self}{name} as last argument has $EndStringLogFile == 3 ") if $is_t_switch_active;
${$self}{replacementText} .= (${$masterSettings{modifyLineBreaks}}{preserveBlankLines}?$tokens{blanklines}:"\n")."\n";
}
# update the argument object
$logger->trace("Adjusting argument object in command, ${$self}{name}") if $is_t_switch_active;
${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0;
${${${$self}{children}}[0]}{body} =~ s/\R$//s;
# update the last mandatory/optional argument
$logger->trace("Adjusting last argument in command, ${$self}{name}") if $is_t_switch_active;
${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} = 0;
${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} = -1;
${${${${$self}{children}}[0]}{children}[-1]}{replacementText} =~ s/\R$//s;
# output to log file
$logger->trace(Dumper(${${${$self}{children}}[0]}{children}[-1])) if $is_tt_switch_active;
}
# situation: ${${$self}{linebreaksAtEnd}}{end} == 1 and the last argument has added
# a line break, which can result in a bogus blank line (see test-cases/commands/just-one-command.tex with mand-args-mod1.yaml)
if(${${$self}{linebreaksAtEnd}}{end} == 1
and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak}
and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} >= 1
and ${${${${$self}{children}}[0]}{children}[-1]}{replacementText}=~m/\R$/s
and !${$self}{endImmediatelyFollowedByComment}){
# last argument adjustment
$logger->trace("Adjusting last argument in command, ${$self}{name} to avoid double line break") if $is_t_switch_active;
${${${${$self}{children}}[0]}{children}[-1]}{replacementText}=~s/\R$//s;
${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} = 0;
# argument object adjustment
$logger->trace("Adjusting argument object in command, ${$self}{name} to avoid double line break") if $is_t_switch_active;
${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0;
${${${$self}{children}}[0]}{body}=~s/\R$//s;
}
# the arguments body might finish with horizontal space, in which case, we need to transfer this
# to the parent object replacement text.
#
# see ../test-cases/texexchange/5461.tex which was the first example to demonstrate the need for this
if(!${${${$self}{children}}[0]}{endImmediatelyFollowedByComment} and ${${${$self}{children}}[0]}{body} =~ m/\h*$/ and ${$self}{replacementText} !~ m/\R$/){
$logger->trace("${$self}{name}: trailling horizontal space found in arguments -- removing it from arguments, adding to replacement text") if $is_t_switch_active;
${${${$self}{children}}[0]}{body} =~ s/(\h*)$//s;
${$self}{replacementText} .= "$1";
}
# search for ifElseFi blocks
$self->find_ifelsefi;
# search for special begin/end
$self->find_special;
}
sub check_linebreaks_before_equals{
# empty routine, which allows the above routine to function (this routine kicks in for KeyEqualsValuesBraces)
return;
}
sub create_unique_id{
my $self = shift;
$commandCounter++;
${$self}{id} = "$tokens{commands}$commandCounter";
return;
}
sub align_at_ampersand{
# need an empty routine here for commands; see
# test-cases/matrix1.tex for example
return;
}
1;
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