prop_invlist
prop_invmap search_invlist
);
-require 'regen/regen_lib.pl';
-require 'regen/charset_translations.pl';
+require './regen/regen_lib.pl';
+require './regen/charset_translations.pl';
# This program outputs charclass_invlists.h, which contains various inversion
# lists in the form of C arrays that are to be used as-is for inversion lists.
my $in_file_pound_if = 0;
+my $max_hdr_len = 3; # In headings, how wide a name is allowed?
+
print $out_fh "/* See the generating file for comments */\n\n";
# The symbols generated by this program are all currently defined only in a
_Perl_IDStart => 'PERL_IN_UTF8_C',
);
+my %gcb_enums;
+my @gcb_short_enums;
+my %gcb_abbreviations;
+my %lb_enums;
+my @lb_short_enums;
+my %lb_abbreviations;
+my %wb_enums;
+my @wb_short_enums;
+my %wb_abbreviations;
+
my @a2n;
sub uniques {
my $charset = shift // ""; # name of character set for comment
die "No inversion list for $name" unless defined $invlist
- && ref $invlist eq 'ARRAY'
- && @$invlist;
+ && ref $invlist eq 'ARRAY';
# Output the inversion list $invlist using the name $name for it.
# It is output in the exact internal form for inversion lists.
# Is the last element of the header 0, or 1 ?
my $zero_or_one = 0;
- if ($invlist->[0] != 0) {
+ if (@$invlist && $invlist->[0] != 0) {
unshift @$invlist, 0;
$zero_or_one = 1;
}
my %enums;
my $name_prefix;
- if ($input_format eq 's') {
- $prop_name = (prop_aliases($prop_name))[1]; # Get full name
- my @enums = prop_values($prop_name);
- if (! @enums) {
- die "Only enum properties are currently handled; '$prop_name' isn't one";
- }
- else {
-
- # Convert short names to long, add in the extras, and sort.
- @enums = map { (prop_value_aliases($prop_name, $_))[1] } @enums;
- push @enums, split /,/, $extra_enums if $extra_enums ne "";
- @enums = sort @enums;
-
- # Assign a value to each element of the enum. The default
- # value always gets 0; the others are arbitrarily assigned.
- my $enum_val = 0;
- $default = prop_value_aliases($prop_name, $default);
- $enums{$default} = $enum_val++;
- for my $enum (@enums) {
- $enums{$enum} = $enum_val++ unless exists $enums{$enum};
+ if ($input_format =~ / ^ s l? $ /x) {
+ $prop_name = (prop_aliases($prop_name))[1] // $prop_name =~ s/^_Perl_//r; # Get full name
+ my $short_name = (prop_aliases($prop_name))[0] // $prop_name;
+ my @input_enums;
+
+ # Find all the possible input values. These become the enum names
+ # that comprise the inversion map. For inputs that don't have sub
+ # lists, we can just get the unique values. Otherwise, we have to
+ # expand the sublists first.
+ if ($input_format ne 'sl') {
+ @input_enums = sort(uniques(@$invmap));
+ }
+ else {
+ foreach my $element (@$invmap) {
+ if (ref $element) {
+ push @input_enums, @$element;
+ }
+ else {
+ push @input_enums, $element;
}
}
+ @input_enums = sort(uniques(@input_enums));
+ }
- # Inversion map stuff is currently used only by regexec
- switch_pound_if($name, 'PERL_IN_REGEXEC_C');
- {
+ # The internal enums come last, and in the order specified.
+ my @enums = @input_enums;
+ my @extras;
+ if ($extra_enums ne "") {
+ @extras = split /,/, $extra_enums;
+
+ # Don't add if already there.
+ foreach my $this_extra (@extras) {
+ next if grep { $_ eq $this_extra } @enums;
+
+ push @enums, $this_extra;
+ }
+ }
+
+ # Assign a value to each element of the enum type we are creating.
+ # The default value always gets 0; the others are arbitrarily
+ # assigned.
+ my $enum_val = 0;
+ my $canonical_default = prop_value_aliases($prop_name, $default);
+ $default = $canonical_default if defined $canonical_default;
+ $enums{$default} = $enum_val++;
+
+ for my $enum (@enums) {
+ $enums{$enum} = $enum_val++ unless exists $enums{$enum};
+ }
+
+ # Calculate the data for the special tables output for these properties.
+ if ($name =~ / ^ _Perl_ (?: GCB | LB | WB ) $ /x) {
+
+ # The data includes the hashes %gcb_enums, %lb_enums, etc.
+ # Similarly we calculate column headings for the tables.
+ #
+ # We use string evals to allow the same code to work on
+ # all the tables
+ my $type = lc $prop_name;
+
+ my $placeholder = "a";
+
+ # Skip if we've already done this code, which populated
+ # this hash
+ if (eval "! \%${type}_enums") {
+
+ # For each enum in the type ...
+ foreach my $enum (sort keys %enums) {
+ my $value = $enums{$enum};
+ my $short;
+ my $abbreviated_from;
+
+ # Special case this wb property value to make the
+ # name more clear
+ if ($enum eq 'Perl_Tailored_HSpace') {
+ $short = 'hs';
+ $abbreviated_from = $enum;
+ }
+ else {
+
+ # Use the official short name, if found.
+ ($short) = prop_value_aliases($type, $enum);
+
+ if (! defined $short) {
+
+ # But if there is no official name, use the name
+ # that came from the data (if any). Otherwise,
+ # the name had to come from the extras list.
+ # There are two types of values in that list.
+ #
+ # First are those enums that are not part of the
+ # property, but are defined by this code. By
+ # convention these have all-caps names of at least
+ # 4 characters. We use the lowercased name for
+ # thse.
+ #
+ # Second are enums that are needed to get
+ # regexec.c to compile, but don't exist in all
+ # Unicode releases. To get here, we must be
+ # compiling an earlier Unicode release that
+ # doesn't have that enum, so just use a unique
+ # anonymous name for it.
+ if (grep { $_ eq $enum } @input_enums) {
+ $short = $enum
+ }
+ elsif ($enum !~ / ^ [A-Z]{4,} $ /x) {
+ $short = $placeholder++;
+ }
+ else {
+ $short = lc $enum;
+ }
+ }
+ }
+
+ # If our short name is too long, or we already
+ # know that the name is an abbreviation, truncate
+ # to make sure it's short enough, and remember
+ # that we did this so we can later add a comment in the
+ # generated file
+ if ( $abbreviated_from
+ || length $short > $max_hdr_len)
+ {
+ $short = substr($short, 0, $max_hdr_len);
+ $abbreviated_from = $enum
+ unless $abbreviated_from;
+ # If the name we are to display conflicts, try
+ # another.
+ while (eval "exists
+ \$${type}_abbreviations{$short}")
+ {
+ die $@ if $@;
+
+ # The increment operator on strings doesn't work
+ # on those containing an '_', so just use the
+ # final portion.
+ my @short = split '_', $short;
+ $short[-1]++;
+ $short = join "_", @short;
+ }
+
+ eval "\$${type}_abbreviations{$short} = '$enum'";
+ die $@ if $@;
+ }
+
+ # Remember the mapping from the property value
+ # (enum) name to its value.
+ eval "\$${type}_enums{$enum} = $value";
+ die $@ if $@;
- my $short_name = (prop_aliases($prop_name))[0];
-
- # The short names tend to be two lower case letters, but it looks
- # better for those if they are upper. XXX
- $short_name = uc($short_name) if length($short_name) < 3
- || substr($short_name, 0, 1) =~ /[[:lower:]]/;
- $name_prefix = "${short_name}_";
- my $enum_count = keys %enums;
- print $out_fh "\n#define ${name_prefix}ENUM_COUNT ", scalar keys %enums, "\n";
-
- print $out_fh "\ntypedef enum {\n";
- print $out_fh "\t${name_prefix}$default = $enums{$default},\n";
- delete $enums{$default};
- foreach my $enum (sort { $a cmp $b } keys %enums) {
- print $out_fh "\t${name_prefix}$enum = $enums{$enum}";
- print $out_fh "," if $enums{$enum} < $enum_count - 1;
- print $out_fh "\n";
+ # Remember the inverse mapping to the short name
+ # so that we can properly label the generated
+ # table's rows and columns
+ eval "\$${type}_short_enums[$value] = '$short'";
+ die $@ if $@;
+ }
}
- $declaration_type = "${name_prefix}enum";
- print $out_fh "} $declaration_type;\n";
+ }
+
+ # Inversion map stuff is currently used only by regexec
+ switch_pound_if($name, 'PERL_IN_REGEXEC_C');
+
+ # The short names tend to be two lower case letters, but it looks
+ # better for those if they are upper. XXX
+ $short_name = uc($short_name) if length($short_name) < 3
+ || substr($short_name, 0, 1) =~ /[[:lower:]]/;
+ $name_prefix = "${short_name}_";
+
+ # Currently unneeded
+ #print $out_fh "\n#define ${name_prefix}ENUM_COUNT ", scalar keys %enums, "\n";
+
+ if ($input_format eq 'sl') {
+ print $out_fh
+ "\n/* Negative enum values indicate the need to use an auxiliary"
+ . " table\n * consisting of the list of enums this one expands to."
+ . " The absolute\n * values of the negative enums are indices into"
+ . " a table of the auxiliary\n * tables' addresses */";
+ }
+
+ # Start the enum definition for this map
+ print $out_fh "\ntypedef enum {\n";
+ my @enum_list;
+ foreach my $enum (keys %enums) {
+ $enum_list[$enums{$enum}] = $enum;
+ }
+ foreach my $i (0 .. @enum_list - 1) {
+ print $out_fh ",\n" if $i > 0;
+
+ my $name = $enum_list[$i];
+ print $out_fh "\t${name_prefix}$name = $i";
+ }
+
+ # For an 'sl' property, we need extra enums, because some of the
+ # elements are lists. Each such distinct list is placed in its own
+ # auxiliary map table. Here, we go through the inversion map, and for
+ # each distinct list found, create an enum value for it, numbered -1,
+ # -2, ....
+ my %multiples;
+ my $aux_table_prefix = "AUX_TABLE_";
+ if ($input_format eq 'sl') {
+ foreach my $element (@$invmap) {
+
+ # A regular scalar is not one of the lists we're looking for
+ # at this stage.
+ next unless ref $element;
+
+ my $joined = join ",", sort @$element;
+ my $already_found = exists $multiples{$joined};
+
+ my $i;
+ if ($already_found) { # Use any existing one
+ $i = $multiples{$joined};
+ }
+ else { # Otherwise increment to get a new table number
+ $i = keys(%multiples) + 1;
+ $multiples{$joined} = $i;
+ }
+
+ # This changes the inversion map for this entry to not be the
+ # list
+ $element = "use_$aux_table_prefix$i";
- $output_format = "${name_prefix}%s";
+ # And add to the enum values
+ if (! $already_found) {
+ print $out_fh ",\n\t${name_prefix}$element = -$i";
+ }
+ }
}
+
+ print $out_fh "\n";
+ $declaration_type = "${name_prefix}enum";
+ print $out_fh "} $declaration_type;\n";
+ # Finished with the enum defintion.
+
+ $output_format = "${name_prefix}%s";
+
+ # If there are auxiliary tables, output them.
+ if (%multiples) {
+
+ print $out_fh "\n#define HAS_${name_prefix}AUX_TABLES\n";
+
+ # Invert keys and values
+ my %inverted_mults;
+ while (my ($key, $value) = each %multiples) {
+ $inverted_mults{$value} = $key;
+ }
+
+ # Output them in sorted order
+ my @sorted_table_list = sort { $a <=> $b } keys %inverted_mults;
+
+ # Keep track of how big each aux table is
+ my @aux_counts;
+
+ # Output each aux table.
+ foreach my $table_number (@sorted_table_list) {
+ my $table = $inverted_mults{$table_number};
+ print $out_fh "\nstatic const $declaration_type $name_prefix$aux_table_prefix$table_number\[] = {\n";
+
+ # Earlier, we joined the elements of this table together with a comma
+ my @elements = split ",", $table;
+
+ $aux_counts[$table_number] = scalar @elements;
+ for my $i (0 .. @elements - 1) {
+ print $out_fh ",\n" if $i > 0;
+ print $out_fh "\t${name_prefix}$elements[$i]";
+ }
+ print $out_fh "\n};\n";
+ }
+
+ # Output the table that is indexed by the absolute value of the
+ # aux table enum and contains pointers to the tables output just
+ # above
+ print $out_fh "\nstatic const $declaration_type * const ${name_prefix}${aux_table_prefix}ptrs\[] = {\n";
+ print $out_fh "\tNULL,\t/* Placeholder */\n";
+ for my $i (1 .. @sorted_table_list) {
+ print $out_fh ",\n" if $i > 1;
+ print $out_fh "\t$name_prefix$aux_table_prefix$i";
+ }
+ print $out_fh "\n};\n";
+
+ print $out_fh
+ "\n/* Parallel table to the above, giving the number of elements"
+ . " in each table\n * pointed to */\n";
+ print $out_fh "static const U8 ${name_prefix}${aux_table_prefix}lengths\[] = {\n";
+ print $out_fh "\t0,\t/* Placeholder */\n";
+ for my $i (1 .. @sorted_table_list) {
+ print $out_fh ",\n" if $i > 1;
+ print $out_fh "\t$aux_counts[$i]\t/* $name_prefix$aux_table_prefix$i */";
+ }
+ print $out_fh "\n};\n";
+ } # End of outputting the auxiliary and associated tables
}
else {
die "'$input_format' invmap() format for '$prop_name' unimplemented";
&& ref $invmap eq 'ARRAY'
&& $count;
+ # Now output the inversion map proper
print $out_fh "\nstatic const $declaration_type ${name}_invmap[] = {";
print $out_fh " /* for $charset */" if $charset;
print $out_fh "\n";
# The main body are the scalars passed in to this routine.
for my $i (0 .. $count - 1) {
my $element = $invmap->[$i];
- $element = $name_prefix . prop_value_aliases($prop_name, $element);
+ my $full_element_name = prop_value_aliases($prop_name, $element);
+ $element = $full_element_name if defined $full_element_name;
+ $element = $name_prefix . $element;
print $out_fh "\t$element";
print $out_fh "," if $i < $count - 1;
print $out_fh "\n";
my ($cp_ref, $folds_ref, $format) = prop_invmap("Case_Folding");
die "Could not find inversion map for Case_Folding" unless defined $format;
die "Incorrect format '$format' for Case_Folding inversion map"
- unless $format eq 'al';
+ unless $format eq 'al'
+ || $format eq 'a';
my @has_multi_char_fold;
my @is_non_final_fold;
return mk_invlist_from_sorted_cp_list([ 128 .. 255 ]);
}
+sub output_table_common {
+
+ # Common subroutine to actually output the generated rules table.
+
+ my ($property,
+ $table_value_defines_ref,
+ $table_ref,
+ $names_ref,
+ $abbreviations_ref) = @_;
+ my $size = @$table_ref;
+
+ # Output the #define list, sorted by numeric value
+ if ($table_value_defines_ref) {
+ my $max_name_length = 0;
+ my @defines;
+
+ # Put in order, and at the same time find the longest name
+ while (my ($enum, $value) = each %$table_value_defines_ref) {
+ $defines[$value] = $enum;
+
+ my $length = length $enum;
+ $max_name_length = $length if $length > $max_name_length;
+ }
+
+ print $out_fh "\n";
+
+ # Output, so that the values are vertically aligned in a column after
+ # the longest name
+ foreach my $i (0 .. @defines - 1) {
+ next unless defined $defines[$i];
+ printf $out_fh "#define %-*s %2d\n",
+ $max_name_length,
+ $defines[$i],
+ $i;
+ }
+ }
+
+ my $column_width = 2; # We currently allow 2 digits for the number
+
+ # If the maximum value in the table is 1, it can be a bool. (Being above
+ # a U8 is not currently handled
+ my $max_element = 0;
+ for my $i (0 .. $size - 1) {
+ for my $j (0 .. $size - 1) {
+ next if $max_element >= $table_ref->[$i][$j];
+ $max_element = $table_ref->[$i][$j];
+ }
+ }
+ die "Need wider table column width given '$max_element"
+ if length $max_element > $column_width;
+
+ my $table_type = ($max_element == 1)
+ ? 'bool'
+ : 'U8';
+
+ # If a name is longer than the width set aside for a column, its column
+ # needs to have increased spacing so that the name doesn't get truncated
+ # nor run into an adjacent column
+ my @spacers;
+
+ # If we are being compiled on a Unicode version earlier than that which
+ # this file was designed for, it may be that some of the property values
+ # aren't in the current release, and so would be undefined if we didn't
+ # define them ourselves. Earlier code has done this, making them
+ # lowercase characters of length one. We look to see if any exist, so
+ # that we can add an annotation to the output table
+ my $has_placeholder = 0;
+
+ for my $i (0 .. $size - 1) {
+ no warnings 'numeric';
+ $has_placeholder = 1 if $names_ref->[$i] =~ / ^ [[:lower:]] $ /ax;
+ $spacers[$i] = " " x (length($names_ref->[$i]) - $column_width);
+ }
+
+ print $out_fh "\nstatic const $table_type ${property}_table[$size][$size] = {\n";
+
+ # Calculate the column heading line
+ my $header_line = "/* "
+ . (" " x $max_hdr_len) # We let the row heading meld to
+ # the '*/' for those that are at
+ # the max
+ . " " x 3; # Space for '*/ '
+ # Now each column
+ for my $i (0 .. $size - 1) {
+ $header_line .= sprintf "%s%*s",
+ $spacers[$i],
+ $column_width + 1, # 1 for the ','
+ $names_ref->[$i];
+ }
+ $header_line .= " */\n";
+
+ # If we have annotations, output it now.
+ if ($has_placeholder || scalar %$abbreviations_ref) {
+ my $text = "";
+ foreach my $abbr (sort keys %$abbreviations_ref) {
+ $text .= "; " if $text;
+ $text .= "'$abbr' stands for '$abbreviations_ref->{$abbr}'";
+ }
+ if ($has_placeholder) {
+ $text .= "; other " if $text;
+ $text .= "lowercase names are placeholders for"
+ . " property values not defined until a later Unicode"
+ . " release, so are irrelevant in this one, as they are"
+ . " not assigned to any code points";
+ }
+
+ my $indent = " " x 3;
+ $text = $indent . "/* $text */";
+
+ # Wrap the text so that it is no wider than the table, which the
+ # header line gives.
+ my $output_width = length $header_line;
+ while (length $text > $output_width) {
+ my $cur_line = substr($text, 0, $output_width);
+
+ # Find the first blank back from the right end to wrap at.
+ for (my $i = $output_width -1; $i > 0; $i--) {
+ if (substr($text, $i, 1) eq " ") {
+ print $out_fh substr($text, 0, $i), "\n";
+
+ # Set so will look at just the remaining tail (which will
+ # be indented and have a '*' after the indent
+ $text = $indent . " * " . substr($text, $i + 1);
+ last;
+ }
+ }
+ }
+
+ # And any remaining
+ print $out_fh $text, "\n" if $text;
+ }
+
+ # We calculated the header line earlier just to get its width so that we
+ # could make sure the annotations fit into that.
+ print $out_fh $header_line;
+
+ # Now output the bulk of the table.
+ for my $i (0 .. $size - 1) {
+
+ # First the row heading.
+ printf $out_fh "/* %-*s*/ ", $max_hdr_len, $names_ref->[$i];
+ print $out_fh "{"; # Then the brace for this row
+
+ # Then each column
+ for my $j (0 .. $size -1) {
+ print $out_fh $spacers[$j];
+ printf $out_fh "%*d", $column_width, $table_ref->[$i][$j];
+ print $out_fh "," if $j < $size - 1;
+ }
+ print $out_fh " }";
+ print $out_fh "," if $i < $size - 1;
+ print $out_fh "\n";
+ }
+
+ print $out_fh "};\n";
+}
+
+sub output_GCB_table() {
+
+ # Create and output the pair table for use in determining Grapheme Cluster
+ # Breaks, given in http://www.unicode.org/reports/tr29/.
+ my %gcb_actions = (
+ GCB_NOBREAK => 0,
+ GCB_BREAKABLE => 1,
+ GCB_RI_then_RI => 2, # Rules 12 and 13
+ GCB_EX_then_EM => 3, # Rule 10
+ );
+
+ # The table is constructed in reverse order of the rules, to make the
+ # lower-numbered, higher priority ones override the later ones, as the
+ # algorithm stops at the earliest matching rule
+
+ my @gcb_table;
+ my $table_size = @gcb_short_enums;
+
+ # Otherwise, break everywhere.
+ # GB99 Any ÷ Any
+ for my $i (0 .. $table_size - 1) {
+ for my $j (0 .. $table_size - 1) {
+ $gcb_table[$i][$j] = 1;
+ }
+ }
+
+ # Do not break within emoji flag sequences. That is, do not break between
+ # regional indicator (RI) symbols if there is an odd number of RI
+ # characters before the break point. Must be resolved in runtime code.
+ #
+ # GB12 sot (RI RI)* RI × RI
+ # GB13 [^RI] (RI RI)* RI × RI
+ $gcb_table[$gcb_enums{'Regional_Indicator'}]
+ [$gcb_enums{'Regional_Indicator'}] = $gcb_actions{GCB_RI_then_RI};
+
+ # Do not break within emoji modifier sequences or emoji zwj sequences.
+ # GB11 ZWJ × ( Glue_After_Zwj | E_Base_GAZ )
+ $gcb_table[$gcb_enums{'ZWJ'}][$gcb_enums{'Glue_After_Zwj'}] = 0;
+ $gcb_table[$gcb_enums{'ZWJ'}][$gcb_enums{'E_Base_GAZ'}] = 0;
+
+ # GB10 ( E_Base | E_Base_GAZ ) Extend* × E_Modifier
+ $gcb_table[$gcb_enums{'Extend'}][$gcb_enums{'E_Modifier'}]
+ = $gcb_actions{GCB_EX_then_EM};
+ $gcb_table[$gcb_enums{'E_Base'}][$gcb_enums{'E_Modifier'}] = 0;
+ $gcb_table[$gcb_enums{'E_Base_GAZ'}][$gcb_enums{'E_Modifier'}] = 0;
+
+ # Do not break before extending characters or ZWJ.
+ # Do not break before SpacingMarks, or after Prepend characters.
+ # GB9b Prepend ×
+ # GB9a × SpacingMark
+ # GB9 × ( Extend | ZWJ )
+ for my $i (0 .. @gcb_table - 1) {
+ $gcb_table[$gcb_enums{'Prepend'}][$i] = 0;
+ $gcb_table[$i][$gcb_enums{'SpacingMark'}] = 0;
+ $gcb_table[$i][$gcb_enums{'Extend'}] = 0;
+ $gcb_table[$i][$gcb_enums{'ZWJ'}] = 0;
+ }
+
+ # Do not break Hangul syllable sequences.
+ # GB8 ( LVT | T) × T
+ $gcb_table[$gcb_enums{'LVT'}][$gcb_enums{'T'}] = 0;
+ $gcb_table[$gcb_enums{'T'}][$gcb_enums{'T'}] = 0;
+
+ # GB7 ( LV | V ) × ( V | T )
+ $gcb_table[$gcb_enums{'LV'}][$gcb_enums{'V'}] = 0;
+ $gcb_table[$gcb_enums{'LV'}][$gcb_enums{'T'}] = 0;
+ $gcb_table[$gcb_enums{'V'}][$gcb_enums{'V'}] = 0;
+ $gcb_table[$gcb_enums{'V'}][$gcb_enums{'T'}] = 0;
+
+ # GB6 L × ( L | V | LV | LVT )
+ $gcb_table[$gcb_enums{'L'}][$gcb_enums{'L'}] = 0;
+ $gcb_table[$gcb_enums{'L'}][$gcb_enums{'V'}] = 0;
+ $gcb_table[$gcb_enums{'L'}][$gcb_enums{'LV'}] = 0;
+ $gcb_table[$gcb_enums{'L'}][$gcb_enums{'LVT'}] = 0;
+
+ # Do not break between a CR and LF. Otherwise, break before and after
+ # controls.
+ # GB5 ÷ ( Control | CR | LF )
+ # GB4 ( Control | CR | LF ) ÷
+ for my $i (0 .. @gcb_table - 1) {
+ $gcb_table[$i][$gcb_enums{'Control'}] = 1;
+ $gcb_table[$i][$gcb_enums{'CR'}] = 1;
+ $gcb_table[$i][$gcb_enums{'LF'}] = 1;
+ $gcb_table[$gcb_enums{'Control'}][$i] = 1;
+ $gcb_table[$gcb_enums{'CR'}][$i] = 1;
+ $gcb_table[$gcb_enums{'LF'}][$i] = 1;
+ }
+
+ # GB3 CR × LF
+ $gcb_table[$gcb_enums{'CR'}][$gcb_enums{'LF'}] = 0;
+
+ # Break at the start and end of text, unless the text is empty
+ # GB1 sot ÷
+ # GB2 ÷ eot
+ for my $i (0 .. @gcb_table - 1) {
+ $gcb_table[$i][$gcb_enums{'EDGE'}] = 1;
+ $gcb_table[$gcb_enums{'EDGE'}][$i] = 1;
+ }
+ $gcb_table[$gcb_enums{'EDGE'}][$gcb_enums{'EDGE'}] = 0;
+
+ output_table_common('GCB', \%gcb_actions,
+ \@gcb_table, \@gcb_short_enums, \%gcb_abbreviations);
+}
+
+sub output_LB_table() {
+
+ # Create and output the enums, #defines, and pair table for use in
+ # determining Line Breaks. This uses the default line break algorithm,
+ # given in http://www.unicode.org/reports/tr14/, but tailored by example 7
+ # in that page, as the Unicode-furnished tests assume that tailoring.
+
+ # The result is really just true or false. But we follow along with tr14,
+ # creating a rule which is false for something like X SP* X. That gets
+ # encoding 2. The rest of the actions are synthetic ones that indicate
+ # some context handling is required. These each are added to the
+ # underlying 0, 1, or 2, instead of replacing them, so that the underlying
+ # value can be retrieved. Actually only rules from 7 through 18 (which
+ # are the ones where space matter) are possible to have 2 added to them.
+ # The others below add just 0 or 1. It might be possible for one
+ # synthetic rule to be added to another, yielding a larger value. This
+ # doesn't happen in the Unicode 8.0 rule set, and as you can see from the
+ # names of the middle grouping below, it is impossible for that to occur
+ # for them because they all start with mutually exclusive classes. That
+ # the final rule can't be added to any of the others isn't obvious from
+ # its name, so it is assigned a power of 2 higher than the others can get
+ # to so any addition would preserve all data. (And the code will reach an
+ # assert(0) on debugging builds should this happen.)
+ my %lb_actions = (
+ LB_NOBREAK => 0,
+ LB_BREAKABLE => 1,
+ LB_NOBREAK_EVEN_WITH_SP_BETWEEN => 2,
+
+ LB_CM_ZWJ_foo => 3, # Rule 9
+ LB_SP_foo => 6, # Rule 18
+ LB_PR_or_PO_then_OP_or_HY => 9, # Rule 25
+ LB_SY_or_IS_then_various => 11, # Rule 25
+ LB_HY_or_BA_then_foo => 13, # Rule 21
+ LB_RI_then_RI => 15, # Rule 30a
+
+ LB_various_then_PO_or_PR => (1<<5), # Rule 25
+ );
+
+ # Construct the LB pair table. This is based on the rules in
+ # http://www.unicode.org/reports/tr14/, but modified as those rules are
+ # designed for someone taking a string of text and sequentially going
+ # through it to find the break opportunities, whereas, Perl requires
+ # determining if a given random spot is a break opportunity, without
+ # knowing all the entire string before it.
+ #
+ # The table is constructed in reverse order of the rules, to make the
+ # lower-numbered, higher priority ones override the later ones, as the
+ # algorithm stops at the earliest matching rule
+
+ my @lb_table;
+ my $table_size = @lb_short_enums;
+
+ # LB31. Break everywhere else
+ for my $i (0 .. $table_size - 1) {
+ for my $j (0 .. $table_size - 1) {
+ $lb_table[$i][$j] = $lb_actions{'LB_BREAKABLE'};
+ }
+ }
+
+ # LB30b Do not break between an emoji base and an emoji modifier.
+ # EB × EM
+ $lb_table[$lb_enums{'E_Base'}][$lb_enums{'E_Modifier'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB30a Break between two regional indicator symbols if and only if there
+ # are an even number of regional indicators preceding the position of the
+ # break.
+ # sot (RI RI)* RI × RI
+ # [^RI] (RI RI)* RI × RI
+ $lb_table[$lb_enums{'Regional_Indicator'}]
+ [$lb_enums{'Regional_Indicator'}] = $lb_actions{'LB_RI_then_RI'};
+
+ # LB30 Do not break between letters, numbers, or ordinary symbols and
+ # opening or closing parentheses.
+ # (AL | HL | NU) × OP
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Open_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Open_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Open_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # CP × (AL | HL | NU)
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB29 Do not break between numeric punctuation and alphabetics (“e.g.”).
+ # IS × (AL | HL)
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB28 Do not break between alphabetics (“at”).
+ # (AL | HL) × (AL | HL)
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB27 Treat a Korean Syllable Block the same as ID.
+ # (JL | JV | JT | H2 | H3) × IN
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JV'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JT'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H2'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H3'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # (JL | JV | JT | H2 | H3) × PO
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JV'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JT'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H2'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H3'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # PR × (JL | JV | JT | H2 | H3)
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'JL'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'JV'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'JT'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'H2'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'H3'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB26 Do not break a Korean syllable.
+ # JL × (JL | JV | H2 | H3)
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'JL'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'JV'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'H2'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JL'}][$lb_enums{'H3'}] = $lb_actions{'LB_NOBREAK'};
+
+ # (JV | H2) × (JV | JT)
+ $lb_table[$lb_enums{'JV'}][$lb_enums{'JV'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H2'}][$lb_enums{'JV'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'JV'}][$lb_enums{'JT'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H2'}][$lb_enums{'JT'}] = $lb_actions{'LB_NOBREAK'};
+
+ # (JT | H3) × JT
+ $lb_table[$lb_enums{'JT'}][$lb_enums{'JT'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'H3'}][$lb_enums{'JT'}] = $lb_actions{'LB_NOBREAK'};
+
+ # LB25 Do not break between the following pairs of classes relevant to
+ # numbers, as tailored by example 7 in
+ # http://www.unicode.org/reports/tr14/#Examples
+ # We follow that tailoring because Unicode's test cases expect it
+ # (PR | PO) × ( OP | HY )? NU
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Postfix_Numeric'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # Given that (OP | HY )? is optional, we have to test for it in code.
+ # We add in the action (instead of overriding) for this, so that in
+ # the code we can recover the underlying break value.
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Open_Punctuation'}]
+ += $lb_actions{'LB_PR_or_PO_then_OP_or_HY'};
+ $lb_table[$lb_enums{'Postfix_Numeric'}][$lb_enums{'Open_Punctuation'}]
+ += $lb_actions{'LB_PR_or_PO_then_OP_or_HY'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Hyphen'}]
+ += $lb_actions{'LB_PR_or_PO_then_OP_or_HY'};
+ $lb_table[$lb_enums{'Postfix_Numeric'}][$lb_enums{'Hyphen'}]
+ += $lb_actions{'LB_PR_or_PO_then_OP_or_HY'};
+
+ # ( OP | HY ) × NU
+ $lb_table[$lb_enums{'Open_Punctuation'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hyphen'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # NU (NU | SY | IS)* × (NU | SY | IS | CL | CP )
+ # which can be rewritten as:
+ # NU (SY | IS)* × (NU | SY | IS | CL | CP )
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Break_Symbols'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Infix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Close_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Close_Parenthesis'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # Like earlier where we have to test in code, we add in the action so
+ # that we can recover the underlying values. This is done in rules
+ # below, as well. The code assumes that we haven't added 2 actions.
+ # Shoul a later Unicode release break that assumption, then tests
+ # should start failing.
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Numeric'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Break_Symbols'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Infix_Numeric'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Close_Punctuation'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Close_Parenthesis'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Numeric'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Break_Symbols'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Infix_Numeric'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Close_Punctuation'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Close_Parenthesis'}]
+ += $lb_actions{'LB_SY_or_IS_then_various'};
+
+ # NU (NU | SY | IS)* (CL | CP)? × (PO | PR)
+ # which can be rewritten as:
+ # NU (SY | IS)* (CL | CP)? × (PO | PR)
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Prefix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Postfix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Close_Punctuation'}][$lb_enums{'Postfix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Postfix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Postfix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Prefix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Close_Punctuation'}][$lb_enums{'Prefix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Infix_Numeric'}][$lb_enums{'Prefix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Prefix_Numeric'}]
+ += $lb_actions{'LB_various_then_PO_or_PR'};
+
+ # LB24 Do not break between numeric prefix/postfix and letters, or between
+ # letters and prefix/postfix.
+ # (PR | PO) × (AL | HL)
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Postfix_Numeric'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Postfix_Numeric'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # (AL | HL) × (PR | PO)
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Prefix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Prefix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB23a Do not break between numeric prefixes and ideographs, or between
+ # ideographs and numeric postfixes.
+ # PR × (ID | EB | EM)
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'Ideographic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'E_Base'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Prefix_Numeric'}][$lb_enums{'E_Modifier'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # (ID | EB | EM) × PO
+ $lb_table[$lb_enums{'Ideographic'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'E_Base'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'E_Modifier'}][$lb_enums{'Postfix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB23 Do not break between digits and letters
+ # (AL | HL) × NU
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Numeric'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # NU × (AL | HL)
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Alphabetic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB22 Do not break between two ellipses, or between letters, numbers or
+ # exclamations and ellipsis.
+ # (AL | HL) × IN
+ $lb_table[$lb_enums{'Alphabetic'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Hebrew_Letter'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # Exclamation × IN
+ $lb_table[$lb_enums{'Exclamation'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # (ID | EB | EM) × IN
+ $lb_table[$lb_enums{'Ideographic'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'E_Base'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'E_Modifier'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # IN × IN
+ $lb_table[$lb_enums{'Inseparable'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # NU × IN
+ $lb_table[$lb_enums{'Numeric'}][$lb_enums{'Inseparable'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB21b Don’t break between Solidus and Hebrew letters.
+ # SY × HL
+ $lb_table[$lb_enums{'Break_Symbols'}][$lb_enums{'Hebrew_Letter'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB21a Don't break after Hebrew + Hyphen.
+ # HL (HY | BA) ×
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Hyphen'}][$i]
+ += $lb_actions{'LB_HY_or_BA_then_foo'};
+ $lb_table[$lb_enums{'Break_After'}][$i]
+ += $lb_actions{'LB_HY_or_BA_then_foo'};
+ }
+
+ # LB21 Do not break before hyphen-minus, other hyphens, fixed-width
+ # spaces, small kana, and other non-starters, or after acute accents.
+ # × BA
+ # × HY
+ # × NS
+ # BB ×
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Break_After'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'Hyphen'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'Nonstarter'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Break_Before'}][$i] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB20 Break before and after unresolved CB.
+ # ÷ CB
+ # CB ÷
+ # Conditional breaks should be resolved external to the line breaking
+ # rules. However, the default action is to treat unresolved CB as breaking
+ # before and after.
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Contingent_Break'}]
+ = $lb_actions{'LB_BREAKABLE'};
+ $lb_table[$lb_enums{'Contingent_Break'}][$i]
+ = $lb_actions{'LB_BREAKABLE'};
+ }
+
+ # LB19 Do not break before or after quotation marks, such as ‘ ” ’.
+ # × QU
+ # QU ×
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Quotation'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'Quotation'}][$i] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB18 Break after spaces
+ # SP ÷
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Space'}][$i] = $lb_actions{'LB_BREAKABLE'};
+ }
+
+ # LB17 Do not break within ‘——’, even with intervening spaces.
+ # B2 SP* × B2
+ $lb_table[$lb_enums{'Break_Both'}][$lb_enums{'Break_Both'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+
+ # LB16 Do not break between closing punctuation and a nonstarter even with
+ # intervening spaces.
+ # (CL | CP) SP* × NS
+ $lb_table[$lb_enums{'Close_Punctuation'}][$lb_enums{'Nonstarter'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$lb_enums{'Close_Parenthesis'}][$lb_enums{'Nonstarter'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+
+
+ # LB15 Do not break within ‘”[’, even with intervening spaces.
+ # QU SP* × OP
+ $lb_table[$lb_enums{'Quotation'}][$lb_enums{'Open_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+
+ # LB14 Do not break after ‘[’, even after spaces.
+ # OP SP* ×
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Open_Punctuation'}][$i]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ }
+
+ # LB13 Do not break before ‘]’ or ‘!’ or ‘;’ or ‘/’, even after spaces, as
+ # tailored by example 7 in http://www.unicode.org/reports/tr14/#Examples
+ # [^NU] × CL
+ # [^NU] × CP
+ # × EX
+ # [^NU] × IS
+ # [^NU] × SY
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Exclamation'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+
+ next if $i == $lb_enums{'Numeric'};
+
+ $lb_table[$i][$lb_enums{'Close_Punctuation'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$i][$lb_enums{'Close_Parenthesis'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$i][$lb_enums{'Infix_Numeric'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$i][$lb_enums{'Break_Symbols'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ }
+
+ # LB12a Do not break before NBSP and related characters, except after
+ # spaces and hyphens.
+ # [^SP BA HY] × GL
+ for my $i (0 .. @lb_table - 1) {
+ next if $i == $lb_enums{'Space'}
+ || $i == $lb_enums{'Break_After'}
+ || $i == $lb_enums{'Hyphen'};
+
+ # We don't break, but if a property above has said don't break even
+ # with space between, don't override that (also in the next few rules)
+ next if $lb_table[$i][$lb_enums{'Glue'}]
+ == $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$i][$lb_enums{'Glue'}] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB12 Do not break after NBSP and related characters.
+ # GL ×
+ for my $i (0 .. @lb_table - 1) {
+ next if $lb_table[$lb_enums{'Glue'}][$i]
+ == $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+ $lb_table[$lb_enums{'Glue'}][$i] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB11 Do not break before or after Word joiner and related characters.
+ # × WJ
+ # WJ ×
+ for my $i (0 .. @lb_table - 1) {
+ if ($lb_table[$i][$lb_enums{'Word_Joiner'}]
+ != $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'})
+ {
+ $lb_table[$i][$lb_enums{'Word_Joiner'}] = $lb_actions{'LB_NOBREAK'};
+ }
+ if ($lb_table[$lb_enums{'Word_Joiner'}][$i]
+ != $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'})
+ {
+ $lb_table[$lb_enums{'Word_Joiner'}][$i] = $lb_actions{'LB_NOBREAK'};
+ }
+ }
+
+ # Special case this here to avoid having to do a special case in the code,
+ # by making this the same as other things with a SP in front of them that
+ # don't break, we avoid an extra test
+ $lb_table[$lb_enums{'Space'}][$lb_enums{'Word_Joiner'}]
+ = $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'};
+
+ # LB9 and LB10 are done in the same loop
+ #
+ # LB9 Do not break a combining character sequence; treat it as if it has
+ # the line breaking class of the base character in all of the
+ # higher-numbered rules. Treat ZWJ as if it were CM
+ # Treat X (CM|ZWJ)* as if it were X.
+ # where X is any line break class except BK, CR, LF, NL, SP, or ZW.
+
+ # LB10 Treat any remaining combining mark or ZWJ as AL. This catches the
+ # case where a CM or ZWJ is the first character on the line or follows SP,
+ # BK, CR, LF, NL, or ZW.
+ for my $i (0 .. @lb_table - 1) {
+
+ # When the CM or ZWJ is the first in the pair, we don't know without
+ # looking behind whether the CM or ZWJ is going to attach to an
+ # earlier character, or not. So have to figure this out at runtime in
+ # the code
+ $lb_table[$lb_enums{'Combining_Mark'}][$i]
+ = $lb_actions{'LB_CM_ZWJ_foo'};
+ $lb_table[$lb_enums{'ZWJ'}][$i] = $lb_actions{'LB_CM_ZWJ_foo'};
+
+ if ( $i == $lb_enums{'Mandatory_Break'}
+ || $i == $lb_enums{'EDGE'}
+ || $i == $lb_enums{'Carriage_Return'}
+ || $i == $lb_enums{'Line_Feed'}
+ || $i == $lb_enums{'Next_Line'}
+ || $i == $lb_enums{'Space'}
+ || $i == $lb_enums{'ZWSpace'})
+ {
+ # For these classes, a following CM doesn't combine, and should do
+ # whatever 'Alphabetic' would do.
+ $lb_table[$i][$lb_enums{'Combining_Mark'}]
+ = $lb_table[$i][$lb_enums{'Alphabetic'}];
+ $lb_table[$i][$lb_enums{'ZWJ'}]
+ = $lb_table[$i][$lb_enums{'Alphabetic'}];
+ }
+ else {
+ # For these classes, the CM or ZWJ combines, so doesn't break,
+ # inheriting the type of nobreak from the master character.
+ if ($lb_table[$i][$lb_enums{'Combining_Mark'}]
+ != $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'})
+ {
+ $lb_table[$i][$lb_enums{'Combining_Mark'}]
+ = $lb_actions{'LB_NOBREAK'};
+ }
+ if ($lb_table[$i][$lb_enums{'ZWJ'}]
+ != $lb_actions{'LB_NOBREAK_EVEN_WITH_SP_BETWEEN'})
+ {
+ $lb_table[$i][$lb_enums{'ZWJ'}]
+ = $lb_actions{'LB_NOBREAK'};
+ }
+ }
+ }
+
+ # LB8a Do not break between a zero width joiner and an ideograph, emoji
+ # base or emoji modifier. This rule prevents breaks within emoji joiner
+ # sequences.
+ # ZWJ × (ID | EB | EM)
+ $lb_table[$lb_enums{'ZWJ'}][$lb_enums{'Ideographic'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'ZWJ'}][$lb_enums{'E_Base'}]
+ = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$lb_enums{'ZWJ'}][$lb_enums{'E_Modifier'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB8 Break before any character following a zero-width space, even if one
+ # or more spaces intervene.
+ # ZW SP* ÷
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'ZWSpace'}][$i] = $lb_actions{'LB_BREAKABLE'};
+ }
+
+ # Because of LB8-10, we need to look at context for "SP x", and this must
+ # be done in the code. So override the existing rules for that, by adding
+ # a constant to get new rules that tell the code it needs to look at
+ # context. By adding this action instead of replacing the existing one,
+ # we can get back to the original rule if necessary.
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Space'}][$i] += $lb_actions{'LB_SP_foo'};
+ }
+
+ # LB7 Do not break before spaces or zero width space.
+ # × SP
+ # × ZW
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Space'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'ZWSpace'}] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB6 Do not break before hard line breaks.
+ # × ( BK | CR | LF | NL )
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'Mandatory_Break'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'Carriage_Return'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'Line_Feed'}] = $lb_actions{'LB_NOBREAK'};
+ $lb_table[$i][$lb_enums{'Next_Line'}] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB5 Treat CR followed by LF, as well as CR, LF, and NL as hard line breaks.
+ # CR × LF
+ # CR !
+ # LF !
+ # NL !
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Carriage_Return'}][$i]
+ = $lb_actions{'LB_BREAKABLE'};
+ $lb_table[$lb_enums{'Line_Feed'}][$i] = $lb_actions{'LB_BREAKABLE'};
+ $lb_table[$lb_enums{'Next_Line'}][$i] = $lb_actions{'LB_BREAKABLE'};
+ }
+ $lb_table[$lb_enums{'Carriage_Return'}][$lb_enums{'Line_Feed'}]
+ = $lb_actions{'LB_NOBREAK'};
+
+ # LB4 Always break after hard line breaks.
+ # BK !
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$lb_enums{'Mandatory_Break'}][$i]
+ = $lb_actions{'LB_BREAKABLE'};
+ }
+
+ # LB3 Always break at the end of text.
+ # ! eot
+ # LB2 Never break at the start of text.
+ # sot ×
+ for my $i (0 .. @lb_table - 1) {
+ $lb_table[$i][$lb_enums{'EDGE'}] = $lb_actions{'LB_BREAKABLE'};
+ $lb_table[$lb_enums{'EDGE'}][$i] = $lb_actions{'LB_NOBREAK'};
+ }
+
+ # LB1 Assign a line breaking class to each code point of the input.
+ # Resolve AI, CB, CJ, SA, SG, and XX into other line breaking classes
+ # depending on criteria outside the scope of this algorithm.
+ #
+ # In the absence of such criteria all characters with a specific
+ # combination of original class and General_Category property value are
+ # resolved as follows:
+ # Original Resolved General_Category
+ # AI, SG, XX AL Any
+ # SA CM Only Mn or Mc
+ # SA AL Any except Mn and Mc
+ # CJ NS Any
+ #
+ # This is done in mktables, so we never see any of the remapped-from
+ # classes.
+
+ output_table_common('LB', \%lb_actions,
+ \@lb_table, \@lb_short_enums, \%lb_abbreviations);
+}
+
+sub output_WB_table() {
+
+ # Create and output the enums, #defines, and pair table for use in
+ # determining Word Breaks, given in http://www.unicode.org/reports/tr29/.
+
+ # This uses the same mechanism in the other bounds tables generated by
+ # this file. The actions that could override a 0 or 1 are added to those
+ # numbers; the actions that clearly don't depend on the underlying rule
+ # simply overwrite
+ my %wb_actions = (
+ WB_NOBREAK => 0,
+ WB_BREAKABLE => 1,
+ WB_hs_then_hs => 2,
+ WB_Ex_or_FO_or_ZWJ_then_foo => 3,
+ WB_DQ_then_HL => 4,
+ WB_HL_then_DQ => 6,
+ WB_LE_or_HL_then_MB_or_ML_or_SQ => 8,
+ WB_MB_or_ML_or_SQ_then_LE_or_HL => 10,
+ WB_MB_or_MN_or_SQ_then_NU => 12,
+ WB_NU_then_MB_or_MN_or_SQ => 14,
+ WB_RI_then_RI => 16,
+ );
+
+ # Construct the WB pair table.
+ # The table is constructed in reverse order of the rules, to make the
+ # lower-numbered, higher priority ones override the later ones, as the
+ # algorithm stops at the earliest matching rule
+
+ my @wb_table;
+ my $table_size = @wb_short_enums - 1; # -1 because we don't use UNKNOWN
+ die "UNKNOWN must be final WB enum" unless $wb_short_enums[-1] =~ /unk/i;
+
+ # Otherwise, break everywhere (including around ideographs).
+ # WB99 Any ÷ Any
+ for my $i (0 .. $table_size - 1) {
+ for my $j (0 .. $table_size - 1) {
+ $wb_table[$i][$j] = $wb_actions{'WB_BREAKABLE'};
+ }
+ }
+
+ # Do not break within emoji flag sequences. That is, do not break between
+ # regional indicator (RI) symbols if there is an odd number of RI
+ # characters before the break point.
+ # WB16 [^RI] (RI RI)* RI × RI
+ # WB15 sot (RI RI)* RI × RI
+ $wb_table[$wb_enums{'Regional_Indicator'}]
+ [$wb_enums{'Regional_Indicator'}] = $wb_actions{'WB_RI_then_RI'};
+
+ # Do not break within emoji modifier sequences.
+ # WB14 ( E_Base | EBG ) × E_Modifier
+ $wb_table[$wb_enums{'E_Base'}][$wb_enums{'E_Modifier'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'E_Base_GAZ'}][$wb_enums{'E_Modifier'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Do not break from extenders.
+ # WB13b ExtendNumLet × (ALetter | Hebrew_Letter | Numeric | Katakana)
+ $wb_table[$wb_enums{'ExtendNumLet'}][$wb_enums{'ALetter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ExtendNumLet'}][$wb_enums{'Hebrew_Letter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ExtendNumLet'}][$wb_enums{'Numeric'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ExtendNumLet'}][$wb_enums{'Katakana'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # WB13a (ALetter | Hebrew_Letter | Numeric | Katakana | ExtendNumLet)
+ # × # ExtendNumLet
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'ExtendNumLet'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'ExtendNumLet'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'ExtendNumLet'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Katakana'}][$wb_enums{'ExtendNumLet'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ExtendNumLet'}][$wb_enums{'ExtendNumLet'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Do not break between Katakana.
+ # WB13 Katakana × Katakana
+ $wb_table[$wb_enums{'Katakana'}][$wb_enums{'Katakana'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Do not break within sequences, such as “3.2” or “3,456.789”.
+ # WB12 Numeric × (MidNum | MidNumLet | Single_Quote) Numeric
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'MidNumLet'}]
+ += $wb_actions{'WB_NU_then_MB_or_MN_or_SQ'};
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'MidNum'}]
+ += $wb_actions{'WB_NU_then_MB_or_MN_or_SQ'};
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'Single_Quote'}]
+ += $wb_actions{'WB_NU_then_MB_or_MN_or_SQ'};
+
+ # WB11 Numeric (MidNum | (MidNumLet | Single_Quote)) × Numeric
+ $wb_table[$wb_enums{'MidNumLet'}][$wb_enums{'Numeric'}]
+ += $wb_actions{'WB_MB_or_MN_or_SQ_then_NU'};
+ $wb_table[$wb_enums{'MidNum'}][$wb_enums{'Numeric'}]
+ += $wb_actions{'WB_MB_or_MN_or_SQ_then_NU'};
+ $wb_table[$wb_enums{'Single_Quote'}][$wb_enums{'Numeric'}]
+ += $wb_actions{'WB_MB_or_MN_or_SQ_then_NU'};
+
+ # Do not break within sequences of digits, or digits adjacent to letters
+ # (“3a”, or “A3”).
+ # WB10 Numeric × (ALetter | Hebrew_Letter)
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'ALetter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'Hebrew_Letter'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # WB9 (ALetter | Hebrew_Letter) × Numeric
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'Numeric'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'Numeric'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # WB8 Numeric × Numeric
+ $wb_table[$wb_enums{'Numeric'}][$wb_enums{'Numeric'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Do not break letters across certain punctuation.
+ # WB7c Hebrew_Letter Double_Quote × Hebrew_Letter
+ $wb_table[$wb_enums{'Double_Quote'}][$wb_enums{'Hebrew_Letter'}]
+ += $wb_actions{'WB_DQ_then_HL'};
+
+ # WB7b Hebrew_Letter × Double_Quote Hebrew_Letter
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'Double_Quote'}]
+ += $wb_actions{'WB_HL_then_DQ'};
+
+ # WB7a Hebrew_Letter × Single_Quote
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'Single_Quote'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # WB7 (ALetter | Hebrew_Letter) (MidLetter | MidNumLet | Single_Quote)
+ # × (ALetter | Hebrew_Letter)
+ $wb_table[$wb_enums{'MidNumLet'}][$wb_enums{'ALetter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+ $wb_table[$wb_enums{'MidNumLet'}][$wb_enums{'Hebrew_Letter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+ $wb_table[$wb_enums{'MidLetter'}][$wb_enums{'ALetter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+ $wb_table[$wb_enums{'MidLetter'}][$wb_enums{'Hebrew_Letter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+ $wb_table[$wb_enums{'Single_Quote'}][$wb_enums{'ALetter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+ $wb_table[$wb_enums{'Single_Quote'}][$wb_enums{'Hebrew_Letter'}]
+ += $wb_actions{'WB_MB_or_ML_or_SQ_then_LE_or_HL'};
+
+ # WB6 (ALetter | Hebrew_Letter) × (MidLetter | MidNumLet
+ # | Single_Quote) (ALetter | Hebrew_Letter)
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'MidNumLet'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'MidNumLet'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'MidLetter'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'MidLetter'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'Single_Quote'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'Single_Quote'}]
+ += $wb_actions{'WB_LE_or_HL_then_MB_or_ML_or_SQ'};
+
+ # Do not break between most letters.
+ # WB5 (ALetter | Hebrew_Letter) × (ALetter | Hebrew_Letter)
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'ALetter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ALetter'}][$wb_enums{'Hebrew_Letter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'ALetter'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Hebrew_Letter'}][$wb_enums{'Hebrew_Letter'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Ignore Format and Extend characters, except after sot, CR, LF, and
+ # Newline. This also has the effect of: Any × (Format | Extend | ZWJ)
+ # WB4 X (Extend | Format | ZWJ)* → X
+ for my $i (0 .. @wb_table - 1) {
+ $wb_table[$wb_enums{'Extend'}][$i]
+ = $wb_actions{'WB_Ex_or_FO_or_ZWJ_then_foo'};
+ $wb_table[$wb_enums{'Format'}][$i]
+ = $wb_actions{'WB_Ex_or_FO_or_ZWJ_then_foo'};
+ $wb_table[$wb_enums{'ZWJ'}][$i]
+ = $wb_actions{'WB_Ex_or_FO_or_ZWJ_then_foo'};
+ }
+ for my $i (0 .. @wb_table - 1) {
+ $wb_table[$i][$wb_enums{'Extend'}] = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$i][$wb_enums{'Format'}] = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$i][$wb_enums{'ZWJ'}] = $wb_actions{'WB_NOBREAK'};
+ }
+
+ # Implied is that these attach to the character before them, except for
+ # the characters that mark the end of a region of text. The rules below
+ # override the ones set up here, for all the characters that need
+ # overriding.
+ for my $i (0 .. @wb_table - 1) {
+ $wb_table[$i][$wb_enums{'Extend'}] = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$i][$wb_enums{'Format'}] = $wb_actions{'WB_NOBREAK'};
+ }
+
+ # Do not break within emoji zwj sequences.
+ # WB3c ZWJ × ( Glue_After_Zwj | EBG )
+ $wb_table[$wb_enums{'ZWJ'}][$wb_enums{'Glue_After_Zwj'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'ZWJ'}][$wb_enums{'E_Base_GAZ'}]
+ = $wb_actions{'WB_NOBREAK'};
+
+ # Break before and after white space
+ # WB3b ÷ (Newline | CR | LF)
+ # WB3a (Newline | CR | LF) ÷
+ # et. al.
+ for my $i ('CR', 'LF', 'Newline', 'Perl_Tailored_HSpace') {
+ for my $j (0 .. @wb_table - 1) {
+ $wb_table[$j][$wb_enums{$i}] = $wb_actions{'WB_BREAKABLE'};
+ $wb_table[$wb_enums{$i}][$j] = $wb_actions{'WB_BREAKABLE'};
+ }
+ }
+
+ # But do not break within white space.
+ # WB3 CR × LF
+ # et.al.
+ for my $i ('CR', 'LF', 'Newline', 'Perl_Tailored_HSpace') {
+ for my $j ('CR', 'LF', 'Newline', 'Perl_Tailored_HSpace') {
+ $wb_table[$wb_enums{$i}][$wb_enums{$j}] = $wb_actions{'WB_NOBREAK'};
+ }
+ }
+
+ # And do not break horizontal space followed by Extend or Format or ZWJ
+ $wb_table[$wb_enums{'Perl_Tailored_HSpace'}][$wb_enums{'Extend'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Perl_Tailored_HSpace'}][$wb_enums{'Format'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Perl_Tailored_HSpace'}][$wb_enums{'ZWJ'}]
+ = $wb_actions{'WB_NOBREAK'};
+ $wb_table[$wb_enums{'Perl_Tailored_HSpace'}]
+ [$wb_enums{'Perl_Tailored_HSpace'}]
+ = $wb_actions{'WB_hs_then_hs'};
+
+ # Break at the start and end of text, unless the text is empty
+ # WB2 Any ÷ eot
+ # WB1 sot ÷ Any
+ for my $i (0 .. @wb_table - 1) {
+ $wb_table[$i][$wb_enums{'EDGE'}] = $wb_actions{'WB_BREAKABLE'};
+ $wb_table[$wb_enums{'EDGE'}][$i] = $wb_actions{'WB_BREAKABLE'};
+ }
+ $wb_table[$wb_enums{'EDGE'}][$wb_enums{'EDGE'}] = 0;
+
+ output_table_common('WB', \%wb_actions,
+ \@wb_table, \@wb_short_enums, \%wb_abbreviations);
+}
+
output_invlist("Latin1", [ 0, 256 ]);
output_invlist("AboveLatin1", [ 256 ]);
print $out_fh "\n" . get_conditional_compile_line_start($charset);
@a2n = @{get_a2n($charset)};
+ # Below is the list of property names to generate. '&' means to use the
+ # subroutine to generate the inversion list instead of the generic code
+ # below. Some properties have a comma-separated list after the name,
+ # These are extra enums to add to those found in the Unicode tables.
no warnings 'qw';
# Ignore non-alpha in sort
for my $prop (sort { prop_name_for_cmp($a) cmp prop_name_for_cmp($b) } qw(
+ Assigned
ASCII
Cased
VertSpace
&UpperLatin1
_Perl_IDStart
_Perl_IDCont
- Grapheme_Cluster_Break,EDGE
- Word_Break,EDGE,UNKNOWN
- Sentence_Break,EDGE
+ _Perl_GCB,E_Base,E_Base_GAZ,E_Modifier,Glue_After_Zwj,LV,Prepend,Regional_Indicator,SpacingMark,ZWJ,EDGE
+ _Perl_LB,Close_Parenthesis,Hebrew_Letter,Next_Line,Regional_Indicator,ZWJ,Contingent_Break,E_Base,E_Modifier,H2,H3,JL,JT,JV,Word_Joiner,EDGE,
+ _Perl_SB,SContinue,CR,Extend,LF,EDGE
+ _Perl_WB,CR,Double_Quote,E_Base,E_Base_GAZ,E_Modifier,Extend,Glue_After_Zwj,Hebrew_Letter,LF,MidNumLet,Newline,Regional_Indicator,Single_Quote,ZWJ,EDGE,UNKNOWN
)
+ # NOTE that the convention is that extra enum
+ # values come after the property name, separated by
+ # commas, with the enums that aren't ever defined
+ # by Unicode coming last, at least 4 all-uppercase
+ # characters. The others are enum names that are
+ # needed by perl, but aren't in all Unicode
+ # releases.
) {
# For the Latin1 properties, we change to use the eXtended version of the
my $to_adjust;
if ($is_local_sub) {
@invlist = eval $lookup_prop;
+ die $@ if $@;
}
else {
@invlist = prop_invlist($lookup_prop, '_perl_core_internal_ok');
if (! @invlist) {
- my ($list_ref, $map_ref, $format, $default);
- ($list_ref, $map_ref, $format, $default)
+ # If couldn't find a non-empty inversion list, see if it is
+ # instead an inversion map
+ my ($list_ref, $map_ref, $format, $default)
= prop_invmap($lookup_prop, '_perl_core_internal_ok');
- die "Could not find inversion list for '$lookup_prop'" unless $list_ref;
- @invlist = @$list_ref;
- @invmap = @$map_ref;
- $map_format = $format;
- $map_default = $default;
- $maps_to_code_point = $map_format =~ /x/;
- $to_adjust = $map_format =~ /a/;
+ if (! $list_ref) {
+ # An empty return here could mean an unknown property, or
+ # merely that the original inversion list is empty. Call
+ # in scalar context to differentiate
+ my $count = prop_invlist($lookup_prop,
+ '_perl_core_internal_ok');
+ die "Could not find inversion list for '$lookup_prop'"
+ unless defined $count;
+ }
+ else {
+ @invlist = @$list_ref;
+ @invmap = @$map_ref;
+ $map_format = $format;
+ $map_default = $default;
+ $maps_to_code_point = $map_format =~ /x/;
+ $to_adjust = $map_format =~ /a/;
+ }
}
}
- die "Could not find inversion list for '$lookup_prop'" unless @invlist;
+
+
+ # Short-circuit an empty inversion list.
+ if (! @invlist) {
+ output_invlist($prop_name, \@invlist, $charset);
+ next;
+ }
# Re-order the Unicode code points to native ones for this platform.
# This is only needed for code points below 256, because native code
# will be converted back later (using a vertical tab as
# the separator). Even if the mapping is to code points,
# we don't translate to native here because the code
- # output_map() calls to output these arrays assumes the
+ # output_invmap() calls to output these arrays assumes the
# input is Unicode, not native.
if (ref $invmap[0]) {
$bucket = join "\cK", @{$invmap[0]};
print $out_fh "\n" . get_conditional_compile_line_end();
}
+switch_pound_if('Boundary_pair_tables', 'PERL_IN_REGEXEC_C');
+
+output_GCB_table();
+output_LB_table();
+output_WB_table();
+
+end_file_pound_if;
+
my $sources_list = "lib/unicore/mktables.lst";
-my @sources = ($0, "lib/Unicode/UCD.pm");
+my @sources = ($0, qw(lib/unicore/mktables
+ lib/Unicode/UCD.pm
+ regen/charset_translations.pl
+ ));
{
# Depend on mktables’ own sources. It’s a shorter list of files than
# those that Unicode::UCD uses.
- if (! open my $mktables_list, $sources_list) {
+ if (! open my $mktables_list, '<', $sources_list) {
# This should force a rebuild once $sources_list exists
push @sources, $sources_list;
}
}
}
-read_only_bottom_close_and_rename($out_fh, \@sources)
+
+read_only_bottom_close_and_rename($out_fh, \@sources);
https://perl5.git.perl.org / perl5.git / blobdiff