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Copy pathModernPerl.tmLanguage.yaml.ep
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ModernPerl.tmLanguage.yaml.ep
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%#
%# This is Extended Perl (EP) but you should view it with a YAML syntax highlighter
%# EP is a template language that lets us use Perl to preprocess text (in this case YAML)
%# For a guide to EP, see http://mojolicio.us/perldoc/Mojolicious/Guides/Rendering#Embedded_Perl
%#
---
name: ModernPerl
scopeName: source.perl
comment: Blaise Roth <[email protected]>
uuid: 2c338cc8-a464-4ee4-a56c-d524947fa6f9
fileTypes:
- pl
- PL
- pm
- pod
- t
firstLineMatch: |-
^#!.*\bperl\b
patterns:
<% {
package ModernPerl::Scopes; # different package so that Carp works
use Carp;
use YAML::Any qw(LoadFile);
# I've separated the scopes from the language definition. The language below uses only the
# scopes defined here (well.. except for meta.whatever). I've broken it up enough and the list
# below is functionally flexible enough that you should be able to style everything to your
# needs without having to touch any real code.
our %scopes = (
map {
my $file = "ModernPerl-scopes-$_.yaml.ep";
my @documents;
@documents = LoadFile($file) if -f $file;
@documents > 1 and warn "Ignoring documents after first document in $file";
my $doc = $documents[0] // {};
ref $doc eq "HASH" or die "Top-level structure must be a dict in $file";
% $doc;
} qw/default user/
);
sub decode_scopes {
return '' if !defined $_[0];
our @stack;
$_[0] =~ s{\$(\w+)}{
exists $scopes{$1} or die "Reference to non-existant '\$$1' while decoding scopes";
grep $_ eq $1, @stack and die "Infinite recursion on '$_[0]' while decoding scopes";
{
push local(@stack), $1;
decode_scopes($scopes{$1});
}
}eg;
return $_[0];
}
decode_scopes($_) for values %scopes;
sub scope {
my $name = shift;
my $scope = join " ", map {
s/(^\w+)(.*)/$1/s;
exists $scopes{$_} or Carp::croak "Scope '$_' doesn't exist";
defined $scopes{$_} and length $scopes{$_} ? map("$_$2.perl", split /\s+/, $scopes{$_}) : "''";
} map $_, @_;
return "$name$scope";
}
}
# using goto so that Carp blames the calling code
sub scope {
unshift @_, "";
goto &ModernPerl::Scopes::scope;
}
# using a variable because $_M doesn't work otherwise
our $scope = sub {
# Needed to use rindex because I don't know of a fast regex solution to this...
# This just finds the level of indentation of the last line of YAML output so far
pos($_M) = rindex $_M, "\n";
$_M =~ /(\G\s*)/; # anchored regex is fast
unshift @_, "$1 name: ";
goto &ModernPerl::Scopes::scope;
};
our ($open, $close, $bopen, $bclose);
our $i = 0;
sub quote_characters;
=%>
- include: '#line_comment'
- include: '#pod'
-
match: |-
(?x) [&%*][!\-~=] | && | \*\* | //
comment: >-
These would otherwise be highlighted as variables or regex,
but they're more likely to be an operator (or two).
-
match: |
(?x)
( & \g<identifier> )
|
(
\$\# (?:\$\s*)* \g<normal_identifier>
|
(?: [@$] \s* | [%*] )
(?<identifier>
(?:\$\s*)*
(?:
# digit variable like $2
(
\d+
|
(?:::)+ \d+ (?!\w|::|'[^\W\d])
)
|
{ \s* \g<-1> \s* }
|
(?<normal_identifier> # normal variable like $foo::bar'baz
(
(?:
(?:::|'?[^\W\d]) \w*
)++
)
|
{ \s* \g<-1> \s* }
)
|
# caret variable like $^W or ${^Word}
(\^ [^\W\d\p{Lower}])
|
{ \s* \g<-1> \w* \s* }
|
# punctuation variable like $[
([^[^!-~]{\w\s])
|
{ \s* \g<-1> \s* }
|
# just highlight the sigil for something like ${ +arbitrary }
(?={)
)
)
|
# these characters aren't another operator, so always highlight them as sigils
[@$] \s*
)
captures:
1:<%= $scope->('function.sigil') %>
2:<%= $scope->('variable') %>
-
match: |-
(-?\b[^\W\d]\w*+)\s*+=>
captures:
1:<%= $scope->('string_autoquoted') %>
comment: >-
Turns out this operator needs to be really high up.
It always autoquotes word characters. It even autoquotes q=>=,
making it almost impossible to have a literal > at position 0 of a q==!
There is a way, though! CORE::q=>=. There's always a way!
<%
for (
[ 'qw?', "(')", 'meta.string.q.perl', 'string_single', 'single' ],
[ 'qq', '(")', 'meta.string.qq.perl', 'string_double', 'double' ],
[ 'qx', '(`)', 'meta.string.qx.perl', 'string_backtick', 'double', 'single' ],
[ 'qr', undef, 'meta.regexp.qr.perl', 'string_regexp', 'double_regexp', 'single', 'adilmnopsux' ],
[ 'm', <<'#', 'meta.regexp.m.perl', 'string_regexp', 'double_regexp', 'single', 'acdgilmnopsux' ],
# Guessing whether a / is a division or the start of a regex is pretty tricky!
(?=\s*/) # optimisation to fail faster
(?:
# punctuation to expect before a /regex/
(?<=[^[^!-~]\w\s])
(?:
(?<=
# binding operators - definitely a regex
[=!~]~
|
# probably a regex
[,;!({\[] | => | && | \|\|
)
|
# assignment - but not a mutator, comparison, or variable
(?<= = )
(?<! [*/%%%x+\-.=!<>&|^@$] = )
)
|
# named operators you'd expect before a /regex/
\b
(?:
# never gonna be perfect with the limitations of lookbehinds, but this is close
(?<= if | or ) %%2%
|
(?<= and | die | for | not | say | xor ) %%3%
|
(?<= exit | warn | when ) %%4%
|
(?<= print | split | until | while ) %%5%
|
(?<= return | unless ) %%6%
|
(?<= defined | foreach ) %%7%
)
)
\s*+ (\/)
|
# otherwise we can try for a single line /regex/ if it's after space
(\/) (?<=\s/|^/)
(?=
(?:
# something like / / is pretty common
\s+
|
# this means no spaces at the start or end unless they're backslashed
# so /\ woo regex\ / works
(?!\s)
(?: [^\\/] | \\. )*
(?: [^\\/\s] | \\. )
)
\/
)
#
) {
my ($keyword, $quote, $meta, $scope_key, $include, $single, $modifiers) = @$_;
my $q = defined $quote ? '\8' : '';
if ($keyword =~ /m/) {
$q .= '\9';
# gonna replace %%2%, %%3%, etc., in the m $quote above with some lookbehinds
sub regexp_m_lb {
my ($n) = @_;
my $core = sprintf '(?<=CORE::.{%d})', $n;
my $format = '(?<![\w\'@$&*%%].{%d}|::.{%1$d}|->.{%1$d})';
my $core_lb = sprintf $format, $n + length "CORE::";
my $lb = sprintf $format, $n;
return qq{
(?: $core $core_lb | $lb )};
}
chomp $quote;
$quote =~ s{\s*%%(\d+)%\s*$}{regexp_m_lb $1}gme;
}
%>\
-
begin: |
(?x)
\b ( (?:CORE::)? <%= $keyword %> ) \s*
(?:
( (\() | (<) | (\[) | ({) ) | ([^[^!-~]\w\s])
)
% if (defined $quote) { chomp $quote;
|
<%= $quote %>
% }
end: |
(?x)
(?:
((?!\3)\)|(?!\4)>|(?!\5)\]|(?!\6)})
|
([\7<%=$q%>[&&]])
)
% if (defined $modifiers) {
([<%= $modifiers %>]*) (\w*)
% }
name: <%= $meta %>
beginCaptures:
1:<%= $scope->('keyword_string') %>
2:<%= $scope->('string_pair_begin') %>
7:<%= $scope->('string_quote_begin') %>
% if (defined $quote) {
8:<%= $scope->('string_quote_begin') %>
% } if ($keyword =~ /m/) {
9:<%= $scope->('string_quote_begin') %>
% }
% if (defined $scope_key) {
contentName: <%= scope $scope_key %>
% }
endCaptures:
1:<%= $scope->('string_pair_end') %>
2:<%= $scope->('string_quote_end') %>
% if (defined $modifiers) {
3:<%= $scope->('string_regexp_modifier') %>
4:<%= $scope->('invalid_modifier') %>
% }
patterns:
% if (defined $single) {
-
begin: |-
(?<=')
end: |-
(?=')
patterns:
- include: '#<%= $single %>'
% }
- include: '#<%= $include %>'
% }
<%
for (
[ 's', 'meta.regexp.s.perl', 'double_or_single_regexp', 'double_or_single', 'acdegilmnoprsux' ],
[ '(?:tr|y)', 'meta.tr.perl', 'double_or_single', 'double_or_single', 'cdrs' ],
) {
my ($keyword, $meta, $first_include, $second_include, $modifiers) = @$_;
%>\
-
begin: |-
(?x) \b (?= ( (?:CORE::)? <%= $keyword %> ) \s* ([^[^!-~]\w\s]) )
end: |-
(?!\b\1\s*\2)
name: <%= $meta %>
patterns:
% while (quote_characters) {
% if ($bopen) {
-
begin: |-
(?x) ( (?:CORE::)?+ \w+ ) \s* (<%= $bopen %>)
end: |
(?x)
(?<!<%= $bopen %>)(?!<%= $bclose %>)
(?:
(?<!<%= $bclose %>|^)
(?:
(?<![^\W[<%= $modifiers %>]])
([<%= $modifiers %>]*)
)?
(\w*)
)?
beginCaptures:
1:<%= $scope->('keyword_string') %>
2:<%= $scope->('string_pair_begin') %>
endCaptures:
1:<%= $scope->('string_regexp_modifier') %>
2:<%= $scope->('invalid_modifier') %>
patterns:
-
begin: |-
(?x) (<%= $bclose %>) (?: \s+ (\#.*) )? \s* \n
end: |
(?x)
(?:
(?<=\S)
|
(?= ^ \s*+ [[^!-~]\w] )
)
(?:
(?<=<%= $bclose %>)
(?: ([<%= $modifiers %>]) | (\w) )
)?
<%= $bclose %>*
beginCaptures:
1:<%= $scope->('string_pair_end') %>
2:<%= $scope->('comment_line') %>
endCaptures:
1:<%= $scope->('string_regexp_modifier') %>
2:<%= $scope->('invalid_modifier') %>
patterns:
-
match: |-
(?x) ^ \s* (\#.*)? \n
captures:
1:<%= $scope->('comment_line') %>
-
begin: |
(?x)
^ \s*
(?:
( (\() | (<) | (\[) | ({) ) | ([^[^!-~]\w\s])
)
end: |-
((?!\2)\)|(?!\3)>|(?!\4)\]|(?!\5)})|([\6[&&]])
beginCaptures:
1:<%= $scope->('string_pair_begin') %>
6:<%= $scope->('string_quote_begin') %>
endCaptures:
1:<%= $scope->('string_pair_end') %>
2:<%= $scope->('string_quote_end') %>
patterns:
- include: '#<%= $second_include %>'
-
begin: |
(?x)
(<%= $bclose %>) \s*
(?:
( (\() | (<) | (\[) | ({) ) | ([^[^!-~]\w\s])
)
end: |
(?x)
(?:
((?!\3)\)|(?!\4)>|(?!\5)\]|(?!\6)})|([\7[&&]])
)
(?:
(?<=<%= $bclose %>)
(?: ([<%= $modifiers %>]) | (\w) )
)?
<%= $bclose %>*
beginCaptures:
1:<%= $scope->('string_pair_end') %>
2:<%= $scope->('string_pair_begin') %>
7:<%= $scope->('string_quote_begin') %>
endCaptures:
1:<%= $scope->('string_pair_end') %>
2:<%= $scope->('string_quote_end') %>
3:<%= $scope->('string_regexp_modifier') %>
4:<%= $scope->('invalid_modifier') %>
patterns:
- include: '#<%= $second_include %>'
-
match: |-
<%= $bclose %>
name: <%= scope "string_pair_end" %>
-
begin: |-
(?<=<%= $bopen %>)
end: |-
(?=<%= $bclose %>)
patterns:
- include: '#<%= $first_include %>'
% } else {
-
begin: |-
(?x) (?= (?:CORE::)?+ \w+ \s* <%= $open %> )
end: |-
(?x) (<%= $open %>) ([<%= $modifiers %>]*) (\w*)
endCaptures:
1:<%= $scope->('string_quote_end') %>
2:<%= $scope->('string_regexp_modifier') %>
3:<%= $scope->('invalid_modifier') %>
patterns:
-
begin: |-
(?x) ( (?:CORE::)?+ \w+ ) \s* (<%= $open %>)
end: |
(?x)
(<%= $open %>)
(?:
(?! \g<3> <%= $open %> )
|
(?<=')(\g<3>)
|
( \w+ \s* )
)
beginCaptures:
1:<%= $scope->('keyword_string') %>
2:<%= $scope->('string_quote_begin') %>
endCaptures:
1:<%= $scope->('string_quote_begin', 'string_quote_end') %>
2:<%= $scope->('string_single') %>
3:<%= $scope->('string_double') %>
patterns:
- include: '#<%= $first_include %>'
-
begin: |-
(?<=<%= $open %>)
end: |-
(?=<%= $open %>)
patterns:
- include: '#<%= $second_include %>'
% }
% }
% }
- include: '#heredoc_1'
-
match: |
(?x)
<
(?<! <<)
(?! [\s=])
(
(?:
\s* (?: [^<>=$\s\\]+ | \\. | [=$] (?! [>]) )
)*+
)
>
(?! [>=])
name: meta.string.glob
captures:
1:<%= $scope->('string_glob') %>
-
match: |
(?x)
{(
\s* (-?[^\W\d]\w*)
|
\g<-1> \s*
)}
captures:
1:<%= $scope->('string_autoquoted') %>
-
begin: |
(?x)
(?:
\b (?:CORE::)? __(?:END|DATA)__ (?!\w|::|'[^\W\d])
|
[\cD\cZ]
)
[\d\D]*
end: |-
(?!) # the end has no end
name: <%= scope "comment_block" %>
patterns:
- include: '#pod'
-
match: |-
\b(?:CORE::)?__(?:END|DATA|FILE|LINE|PACKAGE|SUB)__(?!\w|::|'[^\W\d])
name: <%= scope "keyword_token" %>
-
match: |
(?x)
\b ( (?:CORE::)? (?:dump|goto|last|next|redo) )
#
(?:
# open parens or space
(?: \s* (?:\(\s*)+ | \s+ )
#
# LABEL
([^\W\d\p{Lower}][^\W\p{Lower}]*)
)?
#
(?!\w|::|'[^\W\d])
name: meta.control.labelled.perl
captures:
1:<%= $scope->('keyword_control') %>
2:<%= $scope->('label') %>
-
match: |-
\belse\s+if(?!\w|::|'[^\W\d])
name: <%= scope "invalid_else_if" %>
-
match: |-
\b(?:CORE::)?(?:break|continue|default|dump|else|elsif|for|foreach|given|goto|if|last|next|redo|return|unless|until|when|while)(?!\w|::|'[^\W\d])
name: <%= scope "keyword_control" %>
-
match: |-
\b(?:CORE::)?(?:local|my|our|state)(?!\w|::|'[^\W\d])
name: <%= scope "keyword_storage" %>
-
match: |-
\b(?:CORE::)?(?:m|q|qq|qr|qw|qx|s|tr|y)\b
name: <%= scope "keyword_string" %>
-
match: |-
\b(?:CORE::)?(?:and|cmp|or|xor|not|lt|gt|le|ge|eq|ne|x)(?!\w|::|'[^\W\d])
name: <%= scope "keyword_operator" %>
-
begin: |
(?x)
\b ( (?:CORE::)? format )
#
(?:
# format picture - copied from variable
(?: \s+
((?!')(?:(?:::|'?[^\W\d])\w*)++)
(?= \s* (?:=\s*)? $ )
)
|
(?!\w|::|'[^\W\d])
)
end: |
(?x)
(?! \s* (?:=\s*)? $ )
|
^\.\s*$
name: meta.format.perl
beginCaptures:
1:<%= $scope->('keyword_function') %>
2:<%= $scope->('filehandle') %>
patterns:
-
begin: |-
=\s*
end: |-
(?=^\.\s*$)
contentName: <%= scope "string_unquoted" %>
patterns:
- include: '#line_comment'
%#- include: '#variable'
-
match: |
(?x)
\b ( (?:CORE::)? package )
(?:
\s+ (
# package name - copied from variable
(?!')(?:(?:::|'?[^\W\d])\w*)+
)
|
(?!\w|::|'[^\W\d])
)
name: meta.class.perl
captures:
1:<%= $scope->('keyword_package') %>
2:<%= $scope->('string_package') %>
-
match: |
(?x)
# autoquoting keywords
\b ( (?:CORE::)? (?:use|require|no) )
(?:
\s+ (
# not a version number
(?!v\d)
# package name - copied from variable
(?!')(?:(?:::|'?[^\W\d])\w*)+
)
|
(?!\w|::|'[^\W\d])
)
captures:
1:<%= $scope->('keyword_package') %>
2:<%= $scope->('string_autoquoted') %>
-
begin: |
(?x)
\b (?:
( (?:CORE::)? sub )
|
# non-standard sub definitions
(method|func|before|after|around)
)
#
# sub name - copied from variable
(?:
\s+ (
(?!')(?:(?:::|'?[^\W\d])\w*)++
)
|
(?!\w|::|'[^\W\d])
)
end: |
(?x)
(?! \s* [(] | \s* $ )
|
(?<= [)] )
name: meta.function.perl
beginCaptures:
1:<%= $scope->('keyword_control') %>
2:<%= $scope->('function') %>
3:<%= $scope->('sub_name') %>
patterns:
-
begin: '\('
end: '\)'
contentName: <%= scope "sub_prototype" %>
patterns:
- include: '#single'
-
match: |-
\b(?:CORE::)?(?:AUTOLOAD|BEGIN|CHECK|END|INIT|UNITCHECK)(?!\w|::|'[^\W\d])
name: meta.function.perl <%= scope "sub_name" %>
-
match: |
(?x)
# these functions can take two filehandles as arguments
\b ( (?:CORE::)? (?:accept|pipe|socketpair) ) \g<6>
(\g<7>) \s*,\s* (\g<7>)
|
(?:
(
# these functions take a filehandle as the first argument
\b (?:CORE::)? (?:accept|bind|binmode|chdir|close|closedir|connect|eof|fcntl|fileno|flock|formline|getc|getpeername|getsockname|getsockopt|ioctl|listen|lstat|open|opendir|pipe|print|printf|read|readdir|readline|recv|rewinddir|say|seek|seekdir|select|send|setsockopt|shutdown|socket|socketpair|stat|sysopen|sysread|sysseek|syswrite|tell|telldir|truncate|write)
)
|
(
# filetest operators also take a filehandle as a first argument
-[ABCMORSTWXbcdefgkloprstuwxz] (?<!\w..)
)
)
(
(?!\w|::|'[^\W\d])
# open parens or space
(?: \s* (?:\(\s*)+ | \s+ )
)
(
# filehandle name - uppercase only
(?!')(?:(?:::|'?[^\W\d\p{Lower}])[^\W\p{Lower}]*)++
(?!\w|::|'[^\W\d]|\s*\()
)
name: meta.function.filehandle.perl
captures:
1:<%= $scope->('keyword_function') %>
2:<%= $scope->('filehandle') %>
3:<%= $scope->('filehandle') %>
4:<%= $scope->('keyword_function') %>
5:<%= $scope->('keyword_filetest') %>
7:<%= $scope->('filehandle') %>
-
match: |-
-[ABCMORSTWXbcdefgkloprstuwxz](?<!\w..)(?!\w|::|'[^\W\d])
name: <%= scope "keyword_filetest" %>
-
match: |-
\b(?:CORE::)?(?:abs|accept|alarm|and|atan2|bind|binmode|bless|break|caller|chdir|chmod|chomp|chop|chown|chr|chroot|close|closedir|cmp|connect|continue|cos|crypt|dbmclose|dbmopen|default|defined|delete|die|do|dump|each|else|elsif|endgrent|endhostent|endnetent|endprotoent|endpwent|endservent|eof|eq|eval|evalbytes|exec|exists|exit|exp|fc|fcntl|fileno|flock|for|foreach|fork|format|formline|ge|getc|getgrent|getgrgid|getgrnam|gethostbyaddr|gethostbyname|gethostent|getlogin|getnetbyaddr|getnetbyname|getnetent|getpeername|getpgrp|getppid|getpriority|getprotobyname|getprotobynumber|getprotoent|getpwent|getpwnam|getpwuid|getservbyname|getservbyport|getservent|getsockname|getsockopt|given|glob|gmtime|goto|grep|gt|hex|if|index|int|ioctl|join|keys|kill|last|lc|lcfirst|le|length|link|listen|local|localtime|lock|log|lstat|lt|m|map|mkdir|msgctl|msgget|msgrcv|msgsnd|my|ne|next|no|not|oct|open|opendir|or|ord|our|pack|package|pipe|pop|pos|print|printf|prototype|push|q|qq|qr|quotemeta|qw|qx|rand|read|readdir|readline|readlink|readpipe|recv|redo|ref|rename|require|reset|return|reverse|rewinddir|rindex|rmdir|s|say|scalar|seek|seekdir|select|semctl|semget|semop|send|setgrent|sethostent|setnetent|setpgrp|setpriority|setprotoent|setpwent|setservent|setsockopt|shift|shmctl|shmget|shmread|shmwrite|shutdown|sin|sleep|socket|socketpair|sort|splice|split|sprintf|sqrt|srand|stat|state|study|sub|substr|symlink|syscall|sysopen|sysread|sysseek|system|syswrite|tell|telldir|tie|tied|time|times|tr|truncate|uc|ucfirst|umask|undef|unless|unlink|unpack|unshift|untie|until|use|utime|values|vec|wait|waitpid|wantarray|warn|when|while|write|x|xor|y)(?!\w|::|'[^\W\d])
name: <%= scope "keyword_function" %>
-
match: |-
\b(?:ARGV|ARGVOUT|STDERR|STDIN|STDOUT|DATA)(?!\w|::|'[^\W\d])
name: <%= scope "filehandle" %>
comment: >-
These aren't keywords, so CORE:: isn't applicable.
-
match: |
(?x)
# class name
(?:
(?=[^[^\w:]\d])(?<!\w)
(\g<2>)
)?
\s* -> \s*
#
# method name
(?!')((?:(?:::|'?[^\W\d])\w*)++)
name: meta.operator.arrow.perl
captures:
1:<%= $scope->('string_autoquoted') %>
2:<%= $scope->('method') %>
-
match: |
(?xi)
\b(?:0b[01_]*)(?!\w)
name: <%= scope "number.binary" %>
-
match: |
(?xi)
\b(?:0[0-7_]+)(?!\w)
name: <%= scope "number.octal" %>
-
match: |
(?xi)
\b(?:0x[\h_]*)(?!\w)
name: <%= scope "number.hex" %>
-
match: |
(?x)
\b (?:
v (\d[\d_]*) (\.\d[\d_]*)* # v with 1 or more digit groups
|
(?!0[\d_]) \g<1> \g<2>{2,} # no v with 3 or more digit groups
)
(?!\w)
name: <%= scope "string_version" %>
-
match: |
(?xi)
(?:
(?:
# start with digit
\b (?!0[\d_]) \d[\d_]*+ \.?
|
# start with point
\B \. \d
)
[\d_]*
(?: e [+-]? [\d_]* )? # possible exponent
)
(?!\w)
name: <%= scope "number.float" %>
-
match: |-
(?:\b\d|\B\.\d)\w*
name: <%= scope "invalid_number" %>
-
match: |-
\b[^\W\d\p{Lower}][^\W\p{Lower}]*+:(?!:)
name: <%= scope "label" %>
-
match: |-
(?=[^[^\w:]\d])(?<!\w)(?:(?:::|'?[^\W\d])\w*)+
name: <%= scope "function" %>
################################################################################
repository:
<%
sub quote_characters {
my ($heredoc) = @_;
{
$i = ord '!' if !$i;
$_ = chr $i++;
$i %= 0x80 + ($heredoc ? 1 : 0);
return if !$i;
if ($i == 0x80) {
$open = $close = $bopen = $bclose = "";
}
else {
redo if /[\w\s]/;
$open = $close = $bopen = $bclose = $_;
tr/(<[{//cd for $bopen, $bclose;
tr/(<[{/)>]}/ for $close, $bclose;
$_ = quotemeta for $open, $close, $bopen, $bclose;
}
}
return 1;
}
sub bracket_characters {
return $i = 0 if $i >= 4;
$open = $bopen = quotemeta +(qw' ( < [ { ')[$i];
$close = $bclose = quotemeta +(qw' ) > ] } ')[$i];
$i++;
return 1;
}
sub recursive_brackets {
my ($name) = @_;
if ($bopen) {
return <<"#";
-
begin: '$bopen'
end: '$bclose'
patterns:
- include: '#$name'
#
}
}
sub quote_begin_end {
if ($open) {
return <<"#";
begin: |-
(?<=$open)
end: |-
(?=$close)
#
}
else {
return <<'#';
begin: '^'
end: '\n|(?<=\n)'
#
}
}
sub e {
my ($s) = @_;
for ($s) {
if ($open or $close) {
s/([$open$close])/\\$1/g;
}
return quotemeta;
}
}
sub o {
my ($s) = @_;
for ($s) {
if ($bopen) {
s/([$bopen])/(\\\\?)\\$1/g
or $_ = quotemeta;
}
return $_;
}
}
sub c {
my ($s) = @_;
for ($s) {
if ($bclose) {
s/([$bclose])/\\k<-1>\\$s/g
or $_ = quotemeta;
}
return $_;
}
}
%>\
single:
patterns:
% while (quote_characters) {
-
<%= quote_begin_end =%>
patterns:
-
match: |-
(\\)[<%= $open.$bclose %>\\]
captures:
1:<%= $scope->('string_escape') %>
<%= recursive_brackets "single" =%>
% }
double:
patterns:
% while (quote_characters 1) {
-
<%= quote_begin_end =%>
patterns:
-
match: |
(?x)
(?<variable>
<%=e '@'%> \g<scalar_identifier>
|
<%=e '$'%> \s*
(?<scalar_identifier>
(?<scalar>
(?:<%=e '$'%>)+
(?<identifier>
(?<caret_id>
<%=e '^'%> [^\W\d\p{Lower}]
)
|
(?<normal_id>
\d+
|
(?:
(?: (?:<%=e '::'%>) | (?:<%=e "'"%>)?[^\W\d] ) \w*
)++
# |
# [^[^!-~]{\w\s<%=$close%>]
)
|
<%=o '{'%>
\s* (?:
\g<variable> | \g<caret_id> \w* | \g<normal_id>
) \s*
<%=c '}'%>
|
(?=<%=e '{'%>)
)
)
|
\g<identifier>
)?
)
name: <%= scope "string_variable" %>
-
match: |
(?x)
\\ (?:
x (?:
\h{1,2}
|
<%=o '{'%> (?!__)[_\h]* <%=c '}'%>
)
|
o <%=o '{'%> (?!__)[_0-7]* <%=c '}'%>
|
[0-7]{1,3}
|
N <%=o '{'%>
(?:
U<%=e '+'%> (?:_?\h+)++
|
(?! U<%=e '+'%> )
(?:
% if ($close !~ /[\\}]$/) {
\\[\\<%=$close%>]
|
% }
[^}<%=$close%>]
)*+
) <%=c '}'%>
|
#c [^\P{ASCII}{]
#|
\p{Alnum}
)
name: <%= scope 'string_escape' %>
-
match: |-
(\\)[\d\D]
captures:
1:<%= $scope->('string_escape') %>
<%= recursive_brackets "double" =%>
% }
double_regexp:
patterns:
% while (quote_characters) {
-
<%= quote_begin_end =%>
patterns:
-
match: |
(?x)
(?<variable>
<%=e '@'%> \g<scalar_identifier>
|
<%=e '$'%>
(?<scalar_identifier>
(?<scalar>
(?:<%=e '$'%>)+
(?<identifier>
(?<caret_id>
<%=e '^'%> [^\W\d\p{Lower}]
)
|
(?<normal_id>
\d+
|
(?:
(?: (?:<%=e '::'%>) | (?:<%=e "'"%>)?[^\W\d] ) \w*
)++
# |
# [^[^!-~]{\w\s<%=$close%>]
)
|
<%=o '{'%>
\s* (?:
\g<variable> | \g<caret_id> \w* | \g<normal_id>
) \s*
<%=c '}'%>
|
(?=<%=e '{'%>)
)
)