| 1 |
package Whatpm::CSS::Tokenizer; |
| 2 |
use strict; |
| 3 |
our $VERSION=do{my @r=(q$Revision: 1.16 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
| 4 |
|
| 5 |
require Exporter; |
| 6 |
push our @ISA, 'Exporter'; |
| 7 |
|
| 8 |
sub BEFORE_TOKEN_STATE () { 0 } |
| 9 |
sub BEFORE_NMSTART_STATE () { 1 } |
| 10 |
sub NAME_STATE () { 2 } |
| 11 |
sub ESCAPE_OPEN_STATE () { 3 } |
| 12 |
sub STRING_STATE () { 4 } |
| 13 |
sub HASH_OPEN_STATE () { 5 } |
| 14 |
sub NUMBER_STATE () { 6 } |
| 15 |
sub NUMBER_FRACTION_STATE () { 7 } |
| 16 |
sub AFTER_NUMBER_STATE () { 8 } |
| 17 |
sub URI_BEFORE_WSP_STATE () { 9 } |
| 18 |
sub ESCAPE_STATE () { 10 } |
| 19 |
sub ESCAPE_BEFORE_LF_STATE () { 11 } |
| 20 |
sub ESCAPE_BEFORE_NL_STATE () { 12 } |
| 21 |
sub NUMBER_DOT_STATE () { 13 } |
| 22 |
sub NUMBER_DOT_NUMBER_STATE () { 14 } |
| 23 |
sub DELIM_STATE () { 15 } |
| 24 |
sub URI_UNQUOTED_STATE () { 16 } |
| 25 |
sub URI_AFTER_WSP_STATE () { 17 } |
| 26 |
sub AFTER_AT_STATE () { 18 } |
| 27 |
sub AFTER_AT_HYPHEN_STATE () { 19 } |
| 28 |
|
| 29 |
sub IDENT_TOKEN () { 1 } |
| 30 |
sub ATKEYWORD_TOKEN () { 2 } |
| 31 |
sub HASH_TOKEN () { 3 } |
| 32 |
sub FUNCTION_TOKEN () { 4 } |
| 33 |
sub URI_TOKEN () { 5 } |
| 34 |
sub URI_INVALID_TOKEN () { 6 } |
| 35 |
sub URI_PREFIX_TOKEN () { 7 } |
| 36 |
sub URI_PREFIX_INVALID_TOKEN () { 8 } |
| 37 |
sub STRING_TOKEN () { 9 } |
| 38 |
sub INVALID_TOKEN () { 10 } |
| 39 |
sub NUMBER_TOKEN () { 11 } |
| 40 |
sub DIMENSION_TOKEN () { 12 } |
| 41 |
sub PERCENTAGE_TOKEN () { 13 } |
| 42 |
sub UNICODE_RANGE_TOKEN () { 14 } |
| 43 |
sub DELIM_TOKEN () { 16 } |
| 44 |
sub PLUS_TOKEN () { 17 } |
| 45 |
sub GREATER_TOKEN () { 18 } |
| 46 |
sub COMMA_TOKEN () { 19 } |
| 47 |
sub TILDE_TOKEN () { 20 } |
| 48 |
sub DASHMATCH_TOKEN () { 21 } |
| 49 |
sub PREFIXMATCH_TOKEN () { 22 } |
| 50 |
sub SUFFIXMATCH_TOKEN () { 23 } |
| 51 |
sub SUBSTRINGMATCH_TOKEN () { 24 } |
| 52 |
sub INCLUDES_TOKEN () { 25 } |
| 53 |
sub SEMICOLON_TOKEN () { 26 } |
| 54 |
sub LBRACE_TOKEN () { 27 } |
| 55 |
sub RBRACE_TOKEN () { 28 } |
| 56 |
sub LPAREN_TOKEN () { 29 } |
| 57 |
sub RPAREN_TOKEN () { 30 } |
| 58 |
sub LBRACKET_TOKEN () { 31 } |
| 59 |
sub RBRACKET_TOKEN () { 32 } |
| 60 |
sub S_TOKEN () { 33 } |
| 61 |
sub CDO_TOKEN () { 34 } |
| 62 |
sub CDC_TOKEN () { 35 } |
| 63 |
sub COMMENT_TOKEN () { 36 } |
| 64 |
sub COMMENT_INVALID_TOKEN () { 37 } |
| 65 |
sub EOF_TOKEN () { 38 } |
| 66 |
sub MINUS_TOKEN () { 39 } |
| 67 |
sub STAR_TOKEN () { 40 } |
| 68 |
sub VBAR_TOKEN () { 41 } |
| 69 |
sub DOT_TOKEN () { 42 } |
| 70 |
sub COLON_TOKEN () { 43 } |
| 71 |
sub MATCH_TOKEN () { 44 } |
| 72 |
sub EXCLAMATION_TOKEN () { 45 } |
| 73 |
|
| 74 |
our @TokenName = qw( |
| 75 |
0 IDENT ATKEYWORD HASH FUNCTION URI URI_INVALID URI_PREFIX URI_PREFIX_INVALID |
| 76 |
STRING INVALID NUMBER DIMENSION PERCENTAGE UNICODE_RANGE |
| 77 |
0 DELIM PLUS GREATER COMMA TILDE DASHMATCH |
| 78 |
PREFIXMATCH SUFFIXMATCH SUBSTRINGMATCH INCLUDES SEMICOLON |
| 79 |
LBRACE RBRACE LPAREN RPAREN LBRACKET RBRACKET S CDO CDC COMMENT |
| 80 |
COMMENT_INVALID EOF MINUS STAR VBAR DOT COLON MATCH EXCLAMATION |
| 81 |
); |
| 82 |
|
| 83 |
our @EXPORT_OK = qw( |
| 84 |
IDENT_TOKEN ATKEYWORD_TOKEN HASH_TOKEN FUNCTION_TOKEN URI_TOKEN |
| 85 |
URI_INVALID_TOKEN URI_PREFIX_TOKEN URI_PREFIX_INVALID_TOKEN |
| 86 |
STRING_TOKEN INVALID_TOKEN NUMBER_TOKEN DIMENSION_TOKEN PERCENTAGE_TOKEN |
| 87 |
UNICODE_RANGE_TOKEN DELIM_TOKEN PLUS_TOKEN GREATER_TOKEN COMMA_TOKEN |
| 88 |
TILDE_TOKEN DASHMATCH_TOKEN PREFIXMATCH_TOKEN SUFFIXMATCH_TOKEN |
| 89 |
SUBSTRINGMATCH_TOKEN INCLUDES_TOKEN SEMICOLON_TOKEN LBRACE_TOKEN |
| 90 |
RBRACE_TOKEN LPAREN_TOKEN RPAREN_TOKEN LBRACKET_TOKEN RBRACKET_TOKEN |
| 91 |
S_TOKEN CDO_TOKEN CDC_TOKEN COMMENT_TOKEN COMMENT_INVALID_TOKEN EOF_TOKEN |
| 92 |
MINUS_TOKEN STAR_TOKEN VBAR_TOKEN DOT_TOKEN COLON_TOKEN MATCH_TOKEN |
| 93 |
EXCLAMATION_TOKEN |
| 94 |
); |
| 95 |
|
| 96 |
our %EXPORT_TAGS = ('token' => [@EXPORT_OK]); |
| 97 |
|
| 98 |
sub new ($) { |
| 99 |
my $self = bless {token => [], get_char => sub { -1 }}, shift; |
| 100 |
return $self; |
| 101 |
} # new |
| 102 |
|
| 103 |
sub init ($) { |
| 104 |
my $self = shift; |
| 105 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 106 |
$self->{c} = $self->{get_char}->(); |
| 107 |
#$self->{t} = {type => token-type, value => value, number => number}; |
| 108 |
} # init |
| 109 |
|
| 110 |
sub get_next_token ($) { |
| 111 |
my $self = shift; |
| 112 |
if (@{$self->{token}}) { |
| 113 |
return shift @{$self->{token}}; |
| 114 |
} |
| 115 |
|
| 116 |
my $char; |
| 117 |
my $num; # |{num}|, if any. |
| 118 |
my $i; # |$i + 1|th character in |unicode| in |escape|. |
| 119 |
my $q; |
| 120 |
## NOTE: |
| 121 |
## 0: in |ident|. |
| 122 |
## 1: in |URI| outside of |string|. |
| 123 |
## 0x0022: in |string1| or |invalid1|. |
| 124 |
## 0x0027: in |string2| or |invalid2|. |
| 125 |
|
| 126 |
A: { |
| 127 |
if ($self->{state} == BEFORE_TOKEN_STATE) { |
| 128 |
if ($self->{c} == 0x002D) { # - |
| 129 |
## NOTE: |-| in |ident| in |IDENT| |
| 130 |
$self->{t} = {type => IDENT_TOKEN, value => '-', hyphen => 1}; |
| 131 |
$self->{state} = BEFORE_NMSTART_STATE; |
| 132 |
$self->{c} = $self->{get_char}->(); |
| 133 |
redo A; |
| 134 |
} elsif ($self->{c} == 0x0055 or $self->{c} == 0x0075) { # U or u |
| 135 |
$self->{t} = {type => IDENT_TOKEN, value => chr $self->{c}}; |
| 136 |
$self->{c} = $self->{get_char}->(); |
| 137 |
if ($self->{c} == 0x002B) { # + |
| 138 |
$self->{c} = $self->{get_char}->(); |
| 139 |
if ((0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 140 |
(0x0041 <= $self->{c} and $self->{c} <= 0x0046) or # A..F |
| 141 |
(0x0061 <= $self->{c} and $self->{c} <= 0x0066) or # a..f |
| 142 |
$self->{c} == 0x003F) { # ? |
| 143 |
$self->{t}->{value} = chr $self->{c}; |
| 144 |
$self->{t}->{type} = UNICODE_RANGE_TOKEN; |
| 145 |
$self->{c} = $self->{get_char}->(); |
| 146 |
C: for (2..6) { |
| 147 |
if ((0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 148 |
(0x0041 <= $self->{c} and $self->{c} <= 0x0046) or # A..F |
| 149 |
(0x0061 <= $self->{c} and $self->{c} <= 0x0066) or # a..f |
| 150 |
$self->{c} == 0x003F) { # ? |
| 151 |
$self->{t}->{value} .= chr $self->{c}; |
| 152 |
$self->{c} = $self->{get_char}->(); |
| 153 |
} else { |
| 154 |
last C; |
| 155 |
} |
| 156 |
} # C |
| 157 |
|
| 158 |
if ($self->{c} == 0x002D) { # - |
| 159 |
$self->{c} = $self->{get_char}->(); |
| 160 |
if ((0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 161 |
(0x0041 <= $self->{c} and $self->{c} <= 0x0046) or # A..F |
| 162 |
(0x0061 <= $self->{c} and $self->{c} <= 0x0066)) { # a..f |
| 163 |
$self->{t}->{value} .= '-' . chr $self->{c}; |
| 164 |
$self->{c} = $self->{get_char}->(); |
| 165 |
C: for (2..6) { |
| 166 |
if ((0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 167 |
(0x0041 <= $self->{c} and $self->{c} <= 0x0046) or # A..F |
| 168 |
(0x0061 <= $self->{c} and $self->{c} <= 0x0066)) { # a..f |
| 169 |
$self->{t}->{value} .= chr $self->{c}; |
| 170 |
$self->{c} = $self->{get_char}->(); |
| 171 |
} else { |
| 172 |
last C; |
| 173 |
} |
| 174 |
} # C |
| 175 |
|
| 176 |
# |
| 177 |
} else { |
| 178 |
my $token = $self->{t}; |
| 179 |
$self->{t} = {type => IDENT_TOKEN, value => '-'}; |
| 180 |
$self->{state} = BEFORE_NMSTART_STATE; |
| 181 |
# reprocess |
| 182 |
return $token; |
| 183 |
#redo A; |
| 184 |
} |
| 185 |
} |
| 186 |
|
| 187 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 188 |
# reprocess |
| 189 |
return $self->{t}; |
| 190 |
#redo A; |
| 191 |
} else { |
| 192 |
unshift @{$self->{token}}, {type => PLUS_TOKEN}; |
| 193 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 194 |
# reprocess |
| 195 |
return $self->{t}; |
| 196 |
#redo A; |
| 197 |
} |
| 198 |
} else { |
| 199 |
$self->{state} = NAME_STATE; |
| 200 |
# reprocess |
| 201 |
redo A; |
| 202 |
} |
| 203 |
} elsif ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 204 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 205 |
$self->{c} == 0x005F or # _ |
| 206 |
$self->{c} > 0x007F) { # nonascii |
| 207 |
## NOTE: |nmstart| in |ident| in |IDENT| |
| 208 |
$self->{t} = {type => IDENT_TOKEN, value => chr $self->{c}}; |
| 209 |
$self->{state} = NAME_STATE; |
| 210 |
$self->{c} = $self->{get_char}->(); |
| 211 |
redo A; |
| 212 |
} elsif ($self->{c} == 0x005C) { # \ |
| 213 |
## NOTE: |nmstart| in |ident| in |IDENT| |
| 214 |
$self->{t} = {type => IDENT_TOKEN, value => ''}; |
| 215 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 216 |
$self->{c} = $self->{get_char}->(); |
| 217 |
redo A; |
| 218 |
} elsif ($self->{c} == 0x0040) { # @ |
| 219 |
## NOTE: |@| in |ATKEYWORD| |
| 220 |
$self->{t} = {type => ATKEYWORD_TOKEN, value => ''}; |
| 221 |
$self->{state} = AFTER_AT_STATE; |
| 222 |
$self->{c} = $self->{get_char}->(); |
| 223 |
redo A; |
| 224 |
} elsif ($self->{c} == 0x0022 or $self->{c} == 0x0027) { # " or ' |
| 225 |
$self->{t} = {type => STRING_TOKEN, value => ''}; |
| 226 |
$self->{state} = STRING_STATE; $q = $self->{c}; |
| 227 |
$self->{c} = $self->{get_char}->(); |
| 228 |
redo A; |
| 229 |
} elsif ($self->{c} == 0x0023) { # # |
| 230 |
## NOTE: |#| in |HASH|. |
| 231 |
$self->{t} = {type => HASH_TOKEN, value => ''}; |
| 232 |
$self->{state} = HASH_OPEN_STATE; |
| 233 |
$self->{c} = $self->{get_char}->(); |
| 234 |
redo A; |
| 235 |
} elsif (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { # 0..9 |
| 236 |
## NOTE: |num|. |
| 237 |
$self->{t} = {type => NUMBER_TOKEN, value => chr $self->{c}}; |
| 238 |
$self->{state} = NUMBER_STATE; |
| 239 |
$self->{c} = $self->{get_char}->(); |
| 240 |
redo A; |
| 241 |
} elsif ($self->{c} == 0x002E) { # . |
| 242 |
## NOTE: |num|. |
| 243 |
$self->{t} = {type => NUMBER_TOKEN, value => '0'}; |
| 244 |
$self->{state} = NUMBER_FRACTION_STATE; |
| 245 |
$self->{c} = $self->{get_char}->(); |
| 246 |
redo A; |
| 247 |
} elsif ($self->{c} == 0x002F) { # / |
| 248 |
$self->{c} = $self->{get_char}->(); |
| 249 |
if ($self->{c} == 0x002A) { # * |
| 250 |
C: { |
| 251 |
$self->{c} = $self->{get_char}->(); |
| 252 |
if ($self->{c} == 0x002A) { # * |
| 253 |
D: { |
| 254 |
$self->{c} = $self->{get_char}->(); |
| 255 |
if ($self->{c} == 0x002F) { # / |
| 256 |
# |
| 257 |
} elsif ($self->{c} == 0x002A) { # * |
| 258 |
redo D; |
| 259 |
} else { |
| 260 |
redo C; |
| 261 |
} |
| 262 |
} # D |
| 263 |
} elsif ($self->{c} == -1) { |
| 264 |
# stay in the state |
| 265 |
# reprocess |
| 266 |
return {type => COMMENT_INVALID_TOKEN}; |
| 267 |
#redo A; |
| 268 |
} else { |
| 269 |
redo C; |
| 270 |
} |
| 271 |
} # C |
| 272 |
|
| 273 |
# stay in the state. |
| 274 |
$self->{c} = $self->{get_char}->(); |
| 275 |
redo A; |
| 276 |
} else { |
| 277 |
# stay in the state. |
| 278 |
# reprocess |
| 279 |
return {type => DELIM_TOKEN, value => '/'}; |
| 280 |
#redo A; |
| 281 |
} |
| 282 |
} elsif ($self->{c} == 0x003C) { # < |
| 283 |
## NOTE: |CDO| |
| 284 |
$self->{c} = $self->{get_char}->(); |
| 285 |
if ($self->{c} == 0x0021) { # ! |
| 286 |
$self->{c} = $self->{get_char}->(); |
| 287 |
if ($self->{c} == 0x002D) { # - |
| 288 |
$self->{c} = $self->{get_char}->(); |
| 289 |
if ($self->{c} == 0x002D) { # - |
| 290 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 291 |
$self->{c} = $self->{get_char}->(); |
| 292 |
return {type => CDO_TOKEN}; |
| 293 |
#redo A; |
| 294 |
} else { |
| 295 |
unshift @{$self->{token}}, {type => EXCLAMATION_TOKEN}; |
| 296 |
## NOTE: |-| in |ident| in |IDENT| |
| 297 |
$self->{t} = {type => IDENT_TOKEN, value => '-'}; |
| 298 |
$self->{state} = BEFORE_NMSTART_STATE; |
| 299 |
#reprocess |
| 300 |
return {type => DELIM_TOKEN, value => '<'}; |
| 301 |
#redo A; |
| 302 |
} |
| 303 |
} else { |
| 304 |
unshift @{$self->{token}}, {type => EXCLAMATION_TOKEN}; |
| 305 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 306 |
#reprocess |
| 307 |
return {type => DELIM_TOKEN, value => '<'}; |
| 308 |
#redo A; |
| 309 |
} |
| 310 |
} else { |
| 311 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 312 |
#reprocess |
| 313 |
return {type => DELIM_TOKEN, value => '<'}; |
| 314 |
#redo A; |
| 315 |
} |
| 316 |
} elsif (my $t = { |
| 317 |
0x0021 => EXCLAMATION_TOKEN, # ! |
| 318 |
0x002D => MINUS_TOKEN, # - |
| 319 |
0x002E => DOT_TOKEN, # . |
| 320 |
0x003A => COLON_TOKEN, # : |
| 321 |
0x003B => SEMICOLON_TOKEN, # ; |
| 322 |
0x003D => MATCH_TOKEN, # = |
| 323 |
0x007B => LBRACE_TOKEN, # { |
| 324 |
0x007D => RBRACE_TOKEN, # } |
| 325 |
0x0028 => LPAREN_TOKEN, # ( |
| 326 |
0x0029 => RPAREN_TOKEN, # ) |
| 327 |
0x005B => LBRACKET_TOKEN, # [ |
| 328 |
0x005D => RBRACKET_TOKEN, # ] |
| 329 |
}->{$self->{c}}) { |
| 330 |
my ($l, $c) = ($self->{line}, $self->{column}); |
| 331 |
# stay in the state |
| 332 |
$self->{c} = $self->{get_char}->($self); |
| 333 |
return {type => $t, line => $l, column => $c}; |
| 334 |
# redo A; |
| 335 |
} elsif ({ |
| 336 |
0x0020 => 1, # SP |
| 337 |
0x0009 => 1, # \t |
| 338 |
0x000D => 1, # \r |
| 339 |
0x000A => 1, # \n |
| 340 |
0x000C => 1, # \f |
| 341 |
}->{$self->{c}}) { |
| 342 |
W: { |
| 343 |
$self->{c} = $self->{get_char}->(); |
| 344 |
if ({ |
| 345 |
0x0020 => 1, # SP |
| 346 |
0x0009 => 1, # \t |
| 347 |
0x000D => 1, # \r |
| 348 |
0x000A => 1, # \n |
| 349 |
0x000C => 1, # \f |
| 350 |
}->{$self->{c}}) { |
| 351 |
redo W; |
| 352 |
} elsif (my $v = { |
| 353 |
0x002B => PLUS_TOKEN, # + |
| 354 |
0x003E => GREATER_TOKEN, # > |
| 355 |
0x002C => COMMA_TOKEN, # , |
| 356 |
0x007E => TILDE_TOKEN, # ~ |
| 357 |
}->{$self->{c}}) { |
| 358 |
# stay in the state |
| 359 |
$self->{c} = $self->{get_char}->(); |
| 360 |
return {type => $v}; |
| 361 |
#redo A; |
| 362 |
} else { |
| 363 |
# stay in the state |
| 364 |
# reprocess |
| 365 |
return {type => S_TOKEN}; |
| 366 |
#redo A; |
| 367 |
} |
| 368 |
} # W |
| 369 |
} elsif (my $v = { |
| 370 |
0x007C => DASHMATCH_TOKEN, # | |
| 371 |
0x005E => PREFIXMATCH_TOKEN, # ^ |
| 372 |
0x0024 => SUFFIXMATCH_TOKEN, # $ |
| 373 |
0x002A => SUBSTRINGMATCH_TOKEN, # * |
| 374 |
}->{$self->{c}}) { |
| 375 |
my $c = $self->{c}; |
| 376 |
$self->{c} = $self->{get_char}->(); |
| 377 |
if ($self->{c} == 0x003D) { # = |
| 378 |
# stay in the state |
| 379 |
$self->{c} = $self->{get_char}->(); |
| 380 |
return {type => $v}; |
| 381 |
#redo A; |
| 382 |
} elsif ($v = { |
| 383 |
0x002A => STAR_TOKEN, # * |
| 384 |
0x007C => VBAR_TOKEN, # | |
| 385 |
}->{$c}) { |
| 386 |
# stay in the state. |
| 387 |
# reprocess |
| 388 |
return {type => $v}; |
| 389 |
#redo A; |
| 390 |
} else { |
| 391 |
# stay in the state |
| 392 |
# reprocess |
| 393 |
return {type => DELIM_TOKEN, value => chr $c}; |
| 394 |
#redo A; |
| 395 |
} |
| 396 |
} elsif ($self->{c} == 0x002B) { # + |
| 397 |
# stay in the state |
| 398 |
$self->{c} = $self->{get_char}->(); |
| 399 |
return {type => PLUS_TOKEN}; |
| 400 |
#redo A; |
| 401 |
} elsif ($self->{c} == 0x003E) { # > |
| 402 |
# stay in the state |
| 403 |
$self->{c} = $self->{get_char}->(); |
| 404 |
return {type => GREATER_TOKEN}; |
| 405 |
#redo A; |
| 406 |
} elsif ($self->{c} == 0x002C) { # , |
| 407 |
# stay in the state |
| 408 |
$self->{c} = $self->{get_char}->(); |
| 409 |
return {type => COMMA_TOKEN}; |
| 410 |
#redo A; |
| 411 |
} elsif ($self->{c} == 0x007E) { # ~ |
| 412 |
$self->{c} = $self->{get_char}->(); |
| 413 |
if ($self->{c} == 0x003D) { # = |
| 414 |
# stay in the state |
| 415 |
$self->{c} = $self->{get_char}->(); |
| 416 |
return {type => INCLUDES_TOKEN}; |
| 417 |
#redo A; |
| 418 |
} else { |
| 419 |
# stay in the state |
| 420 |
# reprocess |
| 421 |
return {type => TILDE_TOKEN}; |
| 422 |
#redo A; |
| 423 |
} |
| 424 |
} elsif ($self->{c} == -1) { |
| 425 |
# stay in the state |
| 426 |
$self->{c} = $self->{get_char}->(); |
| 427 |
return {type => EOF_TOKEN}; |
| 428 |
#redo A; |
| 429 |
} else { |
| 430 |
# stay in the state |
| 431 |
$self->{t} = {type => DELIM_TOKEN, value => chr $self->{c}}; |
| 432 |
$self->{c} = $self->{get_char}->(); |
| 433 |
return $self->{t}; |
| 434 |
#redo A; |
| 435 |
} |
| 436 |
} elsif ($self->{state} == BEFORE_NMSTART_STATE) { |
| 437 |
## NOTE: |nmstart| in |ident| in (|IDENT|, |DIMENSION|, or |
| 438 |
## |FUNCTION|) |
| 439 |
if ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 440 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 441 |
$self->{c} == 0x005F or # _ |
| 442 |
$self->{c} > 0x007F) { # nonascii |
| 443 |
$self->{t}->{value} .= chr $self->{c}; |
| 444 |
$self->{t}->{type} = DIMENSION_TOKEN |
| 445 |
if $self->{t}->{type} == NUMBER_TOKEN; |
| 446 |
$self->{state} = NAME_STATE; |
| 447 |
$self->{c} = $self->{get_char}->(); |
| 448 |
redo A; |
| 449 |
} elsif ($self->{c} == 0x005C) { # \ |
| 450 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 451 |
$self->{c} = $self->{get_char}->(); |
| 452 |
redo A; |
| 453 |
} elsif ($self->{c} == 0x002D) { # - |
| 454 |
if ($self->{t}->{type} == IDENT_TOKEN) { |
| 455 |
$self->{c} = $self->{get_char}->(); |
| 456 |
if ($self->{c} == 0x003E) { # > |
| 457 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 458 |
$self->{c} = $self->{get_char}->(); |
| 459 |
return {type => CDC_TOKEN}; |
| 460 |
#redo A; |
| 461 |
} else { |
| 462 |
## NOTE: |-|, |-|, $self->{c} |
| 463 |
#$self->{t} = {type => IDENT_TOKEN, value => '-'}; |
| 464 |
# stay in the state |
| 465 |
# reconsume |
| 466 |
return {type => MINUS_TOKEN}; |
| 467 |
#redo A; |
| 468 |
} |
| 469 |
} elsif ($self->{t}->{type} == DIMENSION_TOKEN) { |
| 470 |
$self->{c} = $self->{get_char}->(); |
| 471 |
if ($self->{c} == 0x003E) { # > |
| 472 |
unshift @{$self->{token}}, {type => CDC_TOKEN}; |
| 473 |
$self->{t}->{type} = NUMBER_TOKEN; |
| 474 |
$self->{t}->{value} = ''; |
| 475 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 476 |
$self->{c} = $self->{get_char}->(); |
| 477 |
return $self->{t}; |
| 478 |
#redo A; |
| 479 |
} else { |
| 480 |
## NOTE: |-|, |-|, $self->{c} |
| 481 |
my $t = $self->{t}; |
| 482 |
$t->{type} = NUMBER_TOKEN; |
| 483 |
$t->{value} = ''; |
| 484 |
$self->{t} = {type => IDENT_TOKEN, value => '-', hyphen => 1}; |
| 485 |
unshift @{$self->{token}}, {type => MINUS_TOKEN}; |
| 486 |
# stay in the state |
| 487 |
# reconsume |
| 488 |
return $t; |
| 489 |
#redo A; |
| 490 |
} |
| 491 |
} else { |
| 492 |
# |
| 493 |
} |
| 494 |
} else { |
| 495 |
# |
| 496 |
} |
| 497 |
|
| 498 |
if ($self->{t}->{type} == DIMENSION_TOKEN) { |
| 499 |
## NOTE: |-| after |NUMBER|. |
| 500 |
unshift @{$self->{token}}, {type => MINUS_TOKEN}; |
| 501 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 502 |
# reprocess |
| 503 |
$self->{t}->{type} = NUMBER_TOKEN; |
| 504 |
$self->{t}->{value} = ''; |
| 505 |
return $self->{t}; |
| 506 |
} else { |
| 507 |
## NOTE: |-| not followed by |nmstart|. |
| 508 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 509 |
# reprocess |
| 510 |
return {type => MINUS_TOKEN}; |
| 511 |
} |
| 512 |
} elsif ($self->{state} == AFTER_AT_STATE) { |
| 513 |
if ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 514 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 515 |
$self->{c} == 0x005F or # _ |
| 516 |
$self->{c} > 0x007F) { # nonascii |
| 517 |
$self->{t}->{value} .= chr $self->{c}; |
| 518 |
$self->{state} = NAME_STATE; |
| 519 |
$self->{c} = $self->{get_char}->(); |
| 520 |
redo A; |
| 521 |
} elsif ($self->{c} == 0x002D) { # - |
| 522 |
$self->{t}->{value} .= '-'; |
| 523 |
$self->{state} = AFTER_AT_HYPHEN_STATE; |
| 524 |
$self->{c} = $self->{get_char}->(); |
| 525 |
redo A; |
| 526 |
} elsif ($self->{c} == 0x005C) { # \ |
| 527 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 528 |
$self->{c} = $self->{get_char}->(); |
| 529 |
redo A; |
| 530 |
} else { |
| 531 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 532 |
# reprocess |
| 533 |
return {type => DELIM_TOKEN, value => '@'}; |
| 534 |
} |
| 535 |
} elsif ($self->{state} == AFTER_AT_HYPHEN_STATE) { |
| 536 |
if ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 537 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 538 |
$self->{c} == 0x005F or # _ |
| 539 |
$self->{c} > 0x007F) { # nonascii |
| 540 |
$self->{t}->{value} .= chr $self->{c}; |
| 541 |
$self->{state} = NAME_STATE; |
| 542 |
$self->{c} = $self->{get_char}->(); |
| 543 |
redo A; |
| 544 |
} elsif ($self->{c} == 0x002D) { # - |
| 545 |
$self->{c} = $self->{get_char}->(); |
| 546 |
if ($self->{c} == 0x003E) { # > |
| 547 |
unshift @{$self->{token}}, {type => CDC_TOKEN}; |
| 548 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 549 |
$self->{c} = $self->{get_char}->(); |
| 550 |
return {type => DELIM_TOKEN, value => '@'}; |
| 551 |
#redo A; |
| 552 |
} else { |
| 553 |
unshift @{$self->{token}}, {type => MINUS_TOKEN}; |
| 554 |
$self->{t} = {type => IDENT_TOKEN, value => '-'}; |
| 555 |
$self->{state} = BEFORE_NMSTART_STATE; |
| 556 |
# reprocess |
| 557 |
return {type => DELIM_TOKEN, value => '@'}; |
| 558 |
#redo A; |
| 559 |
} |
| 560 |
} elsif ($self->{c} == 0x005C) { # \ |
| 561 |
## TODO: @-\{nl} |
| 562 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 563 |
$self->{c} = $self->{get_char}->(); |
| 564 |
redo A; |
| 565 |
} else { |
| 566 |
unshift @{$self->{token}}, {type => MINUS_TOKEN}; |
| 567 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 568 |
# reprocess |
| 569 |
return {type => DELIM_TOKEN, value => '@'}; |
| 570 |
} |
| 571 |
} elsif ($self->{state} == AFTER_NUMBER_STATE) { |
| 572 |
if ($self->{c} == 0x002D) { # - |
| 573 |
## NOTE: |-| in |ident|. |
| 574 |
$self->{t}->{hyphen} = 1; |
| 575 |
$self->{t}->{value} = '-'; |
| 576 |
$self->{t}->{type} = DIMENSION_TOKEN; |
| 577 |
$self->{state} = BEFORE_NMSTART_STATE; |
| 578 |
$self->{c} = $self->{get_char}->(); |
| 579 |
redo A; |
| 580 |
} elsif ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 581 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 582 |
$self->{c} == 0x005F or # _ |
| 583 |
$self->{c} > 0x007F) { # nonascii |
| 584 |
## NOTE: |nmstart| in |ident|. |
| 585 |
$self->{t}->{value} = chr $self->{c}; |
| 586 |
$self->{t}->{type} = DIMENSION_TOKEN; |
| 587 |
$self->{state} = NAME_STATE; |
| 588 |
$self->{c} = $self->{get_char}->(); |
| 589 |
redo A; |
| 590 |
} elsif ($self->{c} == 0x005C) { # \ |
| 591 |
## NOTE: |nmstart| in |ident| in |IDENT| |
| 592 |
$self->{t}->{value} = ''; |
| 593 |
$self->{t}->{type} = DIMENSION_TOKEN; |
| 594 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 595 |
$self->{c} = $self->{get_char}->(); |
| 596 |
redo A; |
| 597 |
} elsif ($self->{c} == 0x0025) { # % |
| 598 |
$self->{t}->{type} = PERCENTAGE_TOKEN; |
| 599 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 600 |
$self->{c} = $self->{get_char}->(); |
| 601 |
return $self->{t}; |
| 602 |
#redo A; |
| 603 |
} else { |
| 604 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 605 |
# reprocess |
| 606 |
return $self->{t}; |
| 607 |
#redo A; |
| 608 |
} |
| 609 |
} elsif ($self->{state} == HASH_OPEN_STATE) { |
| 610 |
## NOTE: The first |nmchar| in |name| in |HASH|. |
| 611 |
if ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 612 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 613 |
(0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 614 |
$self->{c} == 0x002D or # - |
| 615 |
$self->{c} == 0x005F or # _ |
| 616 |
$self->{c} > 0x007F) { # nonascii |
| 617 |
$self->{t}->{value} .= chr $self->{c}; |
| 618 |
$self->{state} = NAME_STATE; |
| 619 |
$self->{c} = $self->{get_char}->(); |
| 620 |
redo A; |
| 621 |
} elsif ($self->{c} == 0x005C) { # \ |
| 622 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 623 |
$self->{c} = $self->{get_char}->(); |
| 624 |
redo A; |
| 625 |
} else { |
| 626 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 627 |
# reprocess |
| 628 |
return {type => DELIM_TOKEN, value => '#'}; |
| 629 |
#redo A; |
| 630 |
} |
| 631 |
} elsif ($self->{state} == NAME_STATE) { |
| 632 |
## NOTE: |nmchar| in (|ident| or |name|). |
| 633 |
if ((0x0041 <= $self->{c} and $self->{c} <= 0x005A) or # A..Z |
| 634 |
(0x0061 <= $self->{c} and $self->{c} <= 0x007A) or # a..z |
| 635 |
(0x0030 <= $self->{c} and $self->{c} <= 0x0039) or # 0..9 |
| 636 |
$self->{c} == 0x005F or # _ |
| 637 |
$self->{c} == 0x002D or # - |
| 638 |
$self->{c} > 0x007F) { # nonascii |
| 639 |
$self->{t}->{value} .= chr $self->{c}; |
| 640 |
# stay in the state |
| 641 |
$self->{c} = $self->{get_char}->(); |
| 642 |
redo A; |
| 643 |
} elsif ($self->{c} == 0x005C) { # \ |
| 644 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 0; |
| 645 |
$self->{c} = $self->{get_char}->(); |
| 646 |
redo A; |
| 647 |
} elsif ($self->{c} == 0x0028 and # ( |
| 648 |
$self->{t}->{type} == IDENT_TOKEN) { # ( |
| 649 |
my $func_name = $self->{t}->{value}; |
| 650 |
$func_name =~ tr/A-Z/a-z/; ## TODO: Unicode or ASCII case-insensitive? |
| 651 |
if ($func_name eq 'url' or $func_name eq 'url-prefix') { |
| 652 |
if ($self->{t}->{has_escape}) { |
| 653 |
## TODO: warn |
| 654 |
} |
| 655 |
$self->{t}->{type} |
| 656 |
= $func_name eq 'url' ? URI_TOKEN : URI_PREFIX_TOKEN; |
| 657 |
$self->{t}->{value} = ''; |
| 658 |
$self->{state} = URI_BEFORE_WSP_STATE; |
| 659 |
$self->{c} = $self->{get_char}->(); |
| 660 |
redo A; |
| 661 |
} else { |
| 662 |
$self->{t}->{type} = FUNCTION_TOKEN; |
| 663 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 664 |
$self->{c} = $self->{get_char}->(); |
| 665 |
return $self->{t}; |
| 666 |
#redo A; |
| 667 |
} |
| 668 |
} else { |
| 669 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 670 |
# reconsume |
| 671 |
return $self->{t}; |
| 672 |
#redo A; |
| 673 |
} |
| 674 |
} elsif ($self->{state} == URI_BEFORE_WSP_STATE) { |
| 675 |
while ({ |
| 676 |
0x0020 => 1, # SP |
| 677 |
0x0009 => 1, # \t |
| 678 |
0x000D => 1, # \r |
| 679 |
0x000A => 1, # \n |
| 680 |
0x000C => 1, # \f |
| 681 |
}->{$self->{c}}) { |
| 682 |
$self->{c} = $self->{get_char}->(); |
| 683 |
} |
| 684 |
if ($self->{c} == -1) { |
| 685 |
$self->{t}->{type} = { |
| 686 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 687 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 688 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 689 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 690 |
}->{$self->{t}->{type}}; |
| 691 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 692 |
$self->{c} = $self->{get_char}->(); |
| 693 |
return $self->{t}; |
| 694 |
#redo A; |
| 695 |
} elsif ($self->{c} < 0x0020 or $self->{c} == 0x0028) { # C0 or ( |
| 696 |
## TODO: Should we consider matches of "(" and ")"? |
| 697 |
$self->{t}->{type} = { |
| 698 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 699 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 700 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 701 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 702 |
}->{$self->{t}->{type}}; |
| 703 |
$self->{state} = URI_UNQUOTED_STATE; |
| 704 |
$self->{c} = $self->{get_char}->(); |
| 705 |
redo A; |
| 706 |
} elsif ($self->{c} == 0x0022 or $self->{c} == 0x0027) { # " or ' |
| 707 |
$self->{state} = STRING_STATE; $q = $self->{c}; |
| 708 |
$self->{c} = $self->{get_char}->(); |
| 709 |
redo A; |
| 710 |
} elsif ($self->{c} == 0x0029) { # ) |
| 711 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 712 |
$self->{c} = $self->{get_char}->(); |
| 713 |
return $self->{t}; |
| 714 |
#redo A; |
| 715 |
} elsif ($self->{c} == 0x005C) { # \ |
| 716 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 1; |
| 717 |
$self->{c} = $self->{get_char}->(); |
| 718 |
redo A; |
| 719 |
} else { |
| 720 |
$self->{t}->{value} .= chr $self->{c}; |
| 721 |
$self->{state} = URI_UNQUOTED_STATE; |
| 722 |
$self->{c} = $self->{get_char}->(); |
| 723 |
redo A; |
| 724 |
} |
| 725 |
} elsif ($self->{state} == URI_UNQUOTED_STATE) { |
| 726 |
if ({ |
| 727 |
0x0020 => 1, # SP |
| 728 |
0x0009 => 1, # \t |
| 729 |
0x000D => 1, # \r |
| 730 |
0x000A => 1, # \n |
| 731 |
0x000C => 1, # \f |
| 732 |
}->{$self->{c}}) { |
| 733 |
$self->{state} = URI_AFTER_WSP_STATE; |
| 734 |
$self->{c} = $self->{get_char}->(); |
| 735 |
redo A; |
| 736 |
} elsif ($self->{c} == -1) { |
| 737 |
$self->{t}->{type} = { |
| 738 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 739 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 740 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 741 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 742 |
}->{$self->{t}->{type}}; |
| 743 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 744 |
$self->{c} = $self->{get_char}->(); |
| 745 |
return $self->{t}; |
| 746 |
#redo A; |
| 747 |
} elsif ($self->{c} < 0x0020 or { |
| 748 |
0x0022 => 1, # " |
| 749 |
0x0027 => 1, # ' |
| 750 |
0x0028 => 1, # ( |
| 751 |
}->{$self->{c}}) { # C0 or ( |
| 752 |
## TODO: Should we consider matches of "(" and ")", '"', or "'"? |
| 753 |
$self->{t}->{type} = { |
| 754 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 755 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 756 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 757 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 758 |
}->{$self->{t}->{type}}; |
| 759 |
# stay in the state. |
| 760 |
$self->{c} = $self->{get_char}->(); |
| 761 |
redo A; |
| 762 |
} elsif ($self->{c} == 0x0029) { # ) |
| 763 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 764 |
$self->{c} = $self->{get_char}->(); |
| 765 |
return $self->{t}; |
| 766 |
#redo A; |
| 767 |
} elsif ($self->{c} == 0x005C) { # \ |
| 768 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 1; |
| 769 |
$self->{c} = $self->{get_char}->(); |
| 770 |
redo A; |
| 771 |
} else { |
| 772 |
$self->{t}->{value} .= chr $self->{c}; |
| 773 |
# stay in the state. |
| 774 |
$self->{c} = $self->{get_char}->(); |
| 775 |
redo A; |
| 776 |
} |
| 777 |
} elsif ($self->{state} == URI_AFTER_WSP_STATE) { |
| 778 |
if ({ |
| 779 |
0x0020 => 1, # SP |
| 780 |
0x0009 => 1, # \t |
| 781 |
0x000D => 1, # \r |
| 782 |
0x000A => 1, # \n |
| 783 |
0x000C => 1, # \f |
| 784 |
}->{$self->{c}}) { |
| 785 |
# stay in the state. |
| 786 |
$self->{c} = $self->{get_char}->(); |
| 787 |
redo A; |
| 788 |
} elsif ($self->{c} == -1) { |
| 789 |
$self->{t}->{type} = { |
| 790 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 791 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 792 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 793 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 794 |
}->{$self->{t}->{type}}; |
| 795 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 796 |
$self->{c} = $self->{get_char}->(); |
| 797 |
return $self->{t}; |
| 798 |
#redo A; |
| 799 |
} elsif ($self->{c} == 0x0029) { # ) |
| 800 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 801 |
$self->{c} = $self->{get_char}->(); |
| 802 |
return $self->{t}; |
| 803 |
#redo A; |
| 804 |
} elsif ($self->{c} == 0x005C) { # \ |
| 805 |
$self->{state} = ESCAPE_OPEN_STATE; $q = 1; |
| 806 |
$self->{c} = $self->{get_char}->(); |
| 807 |
redo A; |
| 808 |
} else { |
| 809 |
## TODO: Should we consider matches of "(" and ")", '"', or "'"? |
| 810 |
$self->{t}->{type} = { |
| 811 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 812 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 813 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 814 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 815 |
}->{$self->{t}->{type}}; |
| 816 |
# stay in the state. |
| 817 |
$self->{c} = $self->{get_char}->(); |
| 818 |
redo A; |
| 819 |
} |
| 820 |
} elsif ($self->{state} == ESCAPE_OPEN_STATE) { |
| 821 |
$self->{t}->{has_escape} = 1; |
| 822 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { # 0..9 |
| 823 |
## NOTE: second character of |unicode| in |escape|. |
| 824 |
$char = $self->{c} - 0x0030; |
| 825 |
$self->{state} = ESCAPE_STATE; $i = 2; |
| 826 |
$self->{c} = $self->{get_char}->(); |
| 827 |
redo A; |
| 828 |
} elsif (0x0041 <= $self->{c} and $self->{c} <= 0x0046) { # A..F |
| 829 |
## NOTE: second character of |unicode| in |escape|. |
| 830 |
$char = $self->{c} - 0x0041 + 0xA; |
| 831 |
$self->{state} = ESCAPE_STATE; $i = 2; |
| 832 |
$self->{c} = $self->{get_char}->(); |
| 833 |
redo A; |
| 834 |
} elsif (0x0061 <= $self->{c} and $self->{c} <= 0x0066) { # a..f |
| 835 |
## NOTE: second character of |unicode| in |escape|. |
| 836 |
$char = $self->{c} - 0x0061 + 0xA; |
| 837 |
$self->{state} = ESCAPE_STATE; $i = 2; |
| 838 |
$self->{c} = $self->{get_char}->(); |
| 839 |
redo A; |
| 840 |
} elsif ($self->{c} == 0x000A or # \n |
| 841 |
$self->{c} == 0x000C) { # \f |
| 842 |
if ($q == 0) { |
| 843 |
# |
| 844 |
} elsif ($q == 1) { |
| 845 |
## NOTE: In |escape| in |URI|. |
| 846 |
$self->{t}->{type} = { |
| 847 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 848 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 849 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 850 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 851 |
}->{$self->{t}->{type}}; |
| 852 |
$self->{t}->{value} .= chr $self->{c}; |
| 853 |
$self->{state} = URI_UNQUOTED_STATE; |
| 854 |
$self->{c} = $self->{get_char}->(); |
| 855 |
redo A; |
| 856 |
} else { |
| 857 |
## Note: In |nl| in ... in |string| or |ident|. |
| 858 |
$self->{state} = STRING_STATE; |
| 859 |
$self->{c} = $self->{get_char}->(); |
| 860 |
redo A; |
| 861 |
} |
| 862 |
} elsif ($self->{c} == 0x000D) { # \r |
| 863 |
if ($q == 0) { |
| 864 |
# |
| 865 |
} elsif ($q == 1) { |
| 866 |
## NOTE: In |escape| in |URI|. |
| 867 |
$self->{t}->{type} = { |
| 868 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 869 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 870 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 871 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 872 |
}->{$self->{t}->{type}}; |
| 873 |
$self->{state} = ESCAPE_BEFORE_LF_STATE; |
| 874 |
$self->{c} = $self->{get_char}->(); |
| 875 |
redo A; |
| 876 |
} else { |
| 877 |
## Note: In |nl| in ... in |string| or |ident|. |
| 878 |
$self->{state} = ESCAPE_BEFORE_LF_STATE; |
| 879 |
$self->{c} = $self->{get_char}->(); |
| 880 |
redo A; |
| 881 |
} |
| 882 |
} elsif ($self->{c} == -1) { |
| 883 |
# |
| 884 |
} else { |
| 885 |
## NOTE: second character of |escape|. |
| 886 |
$self->{t}->{value} .= chr $self->{c}; |
| 887 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 888 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 889 |
$self->{c} = $self->{get_char}->(); |
| 890 |
redo A; |
| 891 |
} |
| 892 |
|
| 893 |
if ($q == 0) { |
| 894 |
if ($self->{t}->{type} == DIMENSION_TOKEN) { |
| 895 |
if ($self->{t}->{hyphen} and $self->{t}->{value} eq '-') { |
| 896 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 897 |
# reprocess |
| 898 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 899 |
unshift @{$self->{token}}, {type => MINUS_TOKEN}; |
| 900 |
$self->{t}->{type} = NUMBER_TOKEN; |
| 901 |
$self->{t}->{value} = ''; |
| 902 |
return $self->{t}; |
| 903 |
#redo A; |
| 904 |
} elsif (length $self->{t}->{value}) { |
| 905 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 906 |
# reprocess |
| 907 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 908 |
return $self->{t}; |
| 909 |
#redo A; |
| 910 |
} else { |
| 911 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 912 |
# reprocess |
| 913 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 914 |
$self->{t}->{type} = NUMBER_TOKEN; |
| 915 |
$self->{t}->{value} = ''; |
| 916 |
return $self->{t}; |
| 917 |
#redo A; |
| 918 |
} |
| 919 |
} else { |
| 920 |
if ($self->{t}->{hyphen} and $self->{t}->{value} eq '-') { |
| 921 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 922 |
# reprocess |
| 923 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 924 |
return {type => MINUS_TOKEN}; |
| 925 |
#redo A; |
| 926 |
} elsif (length $self->{t}->{value}) { |
| 927 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 928 |
# reprocess |
| 929 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 930 |
return $self->{t}; |
| 931 |
#redo A; |
| 932 |
} else { |
| 933 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 934 |
# reprocess |
| 935 |
return {type => DELIM_TOKEN, value => '\\'}; |
| 936 |
#redo A; |
| 937 |
} |
| 938 |
} |
| 939 |
} elsif ($q == 1) { |
| 940 |
$self->{state} = URI_UNQUOTED_STATE; |
| 941 |
$self->{c} = $self->{get_char}->(); |
| 942 |
redo A; |
| 943 |
} else { |
| 944 |
unshift @{$self->{token}}, {type => DELIM_TOKEN, value => '\\'}; |
| 945 |
$self->{t}->{type} = { |
| 946 |
STRING_TOKEN, INVALID_TOKEN, |
| 947 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 948 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 949 |
}->{$self->{t}->{type}} || $self->{t}->{type}; |
| 950 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 951 |
# reprocess |
| 952 |
return $self->{t}; |
| 953 |
#redo A; |
| 954 |
} |
| 955 |
} elsif ($self->{state} == ESCAPE_STATE) { |
| 956 |
## NOTE: third..seventh character of |unicode| in |escape|. |
| 957 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { # 0..9 |
| 958 |
$char = $char * 0x10 + $self->{c} - 0x0030; |
| 959 |
$self->{state} = ++$i == 7 ? ESCAPE_BEFORE_NL_STATE : ESCAPE_STATE; |
| 960 |
$self->{c} = $self->{get_char}->(); |
| 961 |
redo A; |
| 962 |
} elsif (0x0041 <= $self->{c} and $self->{c} <= 0x0046) { # A..F |
| 963 |
$char = $char * 0x10 + $self->{c} - 0x0041 + 0xA; |
| 964 |
$self->{state} = ++$i == 7 ? ESCAPE_BEFORE_NL_STATE : ESCAPE_STATE; |
| 965 |
$self->{c} = $self->{get_char}->(); |
| 966 |
redo A; |
| 967 |
} elsif (0x0061 <= $self->{c} and $self->{c} <= 0x0066) { # a..f |
| 968 |
$char = $char * 0x10 + $self->{c} - 0x0061 + 0xA; |
| 969 |
$self->{state} = ++$i == 7 ? ESCAPE_BEFORE_NL_STATE : ESCAPE_STATE; |
| 970 |
$self->{c} = $self->{get_char}->(); |
| 971 |
redo A; |
| 972 |
} elsif ($self->{c} == 0x0020 or # SP |
| 973 |
$self->{c} == 0x000A or # \n |
| 974 |
$self->{c} == 0x0009 or # \t |
| 975 |
$self->{c} == 0x000C) { # \f |
| 976 |
$self->{t}->{value} .= chr $char; |
| 977 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 978 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 979 |
$self->{c} = $self->{get_char}->(); |
| 980 |
redo A; |
| 981 |
} elsif ($self->{c} == 0x000D) { # \r |
| 982 |
$self->{state} = ESCAPE_BEFORE_LF_STATE; |
| 983 |
$self->{c} = $self->{get_char}->(); |
| 984 |
redo A; |
| 985 |
} else { |
| 986 |
$self->{t}->{value} .= chr $char; |
| 987 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 988 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 989 |
# reconsume |
| 990 |
redo A; |
| 991 |
} |
| 992 |
} elsif ($self->{state} == ESCAPE_BEFORE_NL_STATE) { |
| 993 |
## NOTE: eightth character of |unicode| in |escape|. |
| 994 |
if ($self->{c} == 0x0020 or # SP |
| 995 |
$self->{c} == 0x000A or # \n |
| 996 |
$self->{c} == 0x0009 or # \t |
| 997 |
$self->{c} == 0x000C) { # \f |
| 998 |
$self->{t}->{value} .= chr $char; |
| 999 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 1000 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 1001 |
$self->{c} = $self->{get_char}->(); |
| 1002 |
redo A; |
| 1003 |
} elsif ($self->{c} == 0x000D) { # \r |
| 1004 |
$self->{state} = ESCAPE_BEFORE_NL_STATE; |
| 1005 |
$self->{c} = $self->{get_char}->(); |
| 1006 |
redo A; |
| 1007 |
} else { |
| 1008 |
$self->{t}->{value} .= chr $char; |
| 1009 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 1010 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 1011 |
# reconsume |
| 1012 |
redo A; |
| 1013 |
} |
| 1014 |
} elsif ($self->{state} == ESCAPE_BEFORE_LF_STATE) { |
| 1015 |
## NOTE: |\n| in |\r\n| in |nl| in |escape|. |
| 1016 |
if ($self->{c} == 0x000A) { # \n |
| 1017 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 1018 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 1019 |
$self->{c} = $self->{get_char}->(); |
| 1020 |
redo A; |
| 1021 |
} else { |
| 1022 |
$self->{state} = $q == 0 ? NAME_STATE : |
| 1023 |
$q == 1 ? URI_UNQUOTED_STATE : STRING_STATE; |
| 1024 |
# reprocess |
| 1025 |
redo A; |
| 1026 |
} |
| 1027 |
} elsif ($self->{state} == STRING_STATE) { |
| 1028 |
## NOTE: A character in |string$Q| in |string| in |STRING|, or |
| 1029 |
## a character in |invalid$Q| in |invalid| in |INVALID|, |
| 1030 |
## where |$Q = $q == 0x0022 ? 1 : 2|. |
| 1031 |
## Or, in |URI|. |
| 1032 |
if ($self->{c} == 0x005C) { # \ |
| 1033 |
$self->{state} = ESCAPE_OPEN_STATE; |
| 1034 |
$self->{c} = $self->{get_char}->(); |
| 1035 |
redo A; |
| 1036 |
} elsif ($self->{c} == $q) { # " | ' |
| 1037 |
if ($self->{t}->{type} == STRING_TOKEN) { |
| 1038 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 1039 |
$self->{c} = $self->{get_char}->(); |
| 1040 |
return $self->{t}; |
| 1041 |
#redo A; |
| 1042 |
} else { |
| 1043 |
$self->{state} = URI_AFTER_WSP_STATE; |
| 1044 |
$self->{c} = $self->{get_char}->(); |
| 1045 |
redo A; |
| 1046 |
} |
| 1047 |
} elsif ($self->{c} == 0x000A or # \n |
| 1048 |
$self->{c} == 0x000D or # \r |
| 1049 |
$self->{c} == 0x000C or # \f |
| 1050 |
$self->{c} == -1) { |
| 1051 |
$self->{t}->{type} = { |
| 1052 |
STRING_TOKEN, INVALID_TOKEN, |
| 1053 |
INVALID_TOKEN, INVALID_TOKEN, |
| 1054 |
URI_TOKEN, URI_INVALID_TOKEN, |
| 1055 |
URI_INVALID_TOKEN, URI_INVALID_TOKEN, |
| 1056 |
URI_PREFIX_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 1057 |
URI_PREFIX_INVALID_TOKEN, URI_PREFIX_INVALID_TOKEN, |
| 1058 |
}->{$self->{t}->{type}}; |
| 1059 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 1060 |
# reconsume |
| 1061 |
return $self->{t}; |
| 1062 |
#redo A; |
| 1063 |
} else { |
| 1064 |
$self->{t}->{value} .= chr $self->{c}; |
| 1065 |
# stay in the state |
| 1066 |
$self->{c} = $self->{get_char}->(); |
| 1067 |
redo A; |
| 1068 |
} |
| 1069 |
} elsif ($self->{state} == NUMBER_STATE) { |
| 1070 |
## NOTE: 2nd, 3rd, or ... character in |num| before |.|. |
| 1071 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { |
| 1072 |
$self->{t}->{value} .= chr $self->{c}; |
| 1073 |
# stay in the state |
| 1074 |
$self->{c} = $self->{get_char}->(); |
| 1075 |
redo A; |
| 1076 |
} elsif ($self->{c} == 0x002E) { # . |
| 1077 |
$self->{state} = NUMBER_DOT_STATE; |
| 1078 |
$self->{c} = $self->{get_char}->(); |
| 1079 |
redo A; |
| 1080 |
} else { |
| 1081 |
$self->{t}->{number} = $self->{t}->{value}; |
| 1082 |
$self->{t}->{value} = ''; |
| 1083 |
$self->{state} = AFTER_NUMBER_STATE; |
| 1084 |
# reprocess |
| 1085 |
redo A; |
| 1086 |
} |
| 1087 |
} elsif ($self->{state} == NUMBER_DOT_STATE) { |
| 1088 |
## NOTE: The character immediately following |.| in |num|. |
| 1089 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { |
| 1090 |
$self->{t}->{value} .= '.' . chr $self->{c}; |
| 1091 |
$self->{state} = NUMBER_DOT_NUMBER_STATE; |
| 1092 |
$self->{c} = $self->{get_char}->(); |
| 1093 |
redo A; |
| 1094 |
} else { |
| 1095 |
unshift @{$self->{token}}, {type => DOT_TOKEN}; |
| 1096 |
$self->{t}->{number} = $self->{t}->{value}; |
| 1097 |
$self->{t}->{value} = ''; |
| 1098 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 1099 |
# reprocess |
| 1100 |
return $self->{t}; |
| 1101 |
#redo A; |
| 1102 |
} |
| 1103 |
} elsif ($self->{state} == NUMBER_FRACTION_STATE) { |
| 1104 |
## NOTE: The character immediately following |.| at the beginning of |num|. |
| 1105 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { |
| 1106 |
$self->{t}->{value} .= '.' . chr $self->{c}; |
| 1107 |
$self->{state} = NUMBER_DOT_NUMBER_STATE; |
| 1108 |
$self->{c} = $self->{get_char}->(); |
| 1109 |
redo A; |
| 1110 |
} else { |
| 1111 |
$self->{state} = BEFORE_TOKEN_STATE; |
| 1112 |
# reprocess |
| 1113 |
return {type => DOT_TOKEN}; |
| 1114 |
#redo A; |
| 1115 |
} |
| 1116 |
} elsif ($self->{state} == NUMBER_DOT_NUMBER_STATE) { |
| 1117 |
## NOTE: |[0-9]| in |num| after |.|. |
| 1118 |
if (0x0030 <= $self->{c} and $self->{c} <= 0x0039) { |
| 1119 |
$self->{t}->{value} .= chr $self->{c}; |
| 1120 |
# stay in the state |
| 1121 |
$self->{c} = $self->{get_char}->(); |
| 1122 |
redo A; |
| 1123 |
} else { |
| 1124 |
$self->{t}->{number} = $self->{t}->{value}; |
| 1125 |
$self->{t}->{value} = ''; |
| 1126 |
$self->{state} = AFTER_NUMBER_STATE; |
| 1127 |
# reprocess |
| 1128 |
redo A; |
| 1129 |
} |
| 1130 |
} else { |
| 1131 |
die "$0: Unknown state |$self->{state}|"; |
| 1132 |
} |
| 1133 |
} # A |
| 1134 |
} # get_next_token |
| 1135 |
|
| 1136 |
sub serialize_token ($$) { |
| 1137 |
shift; |
| 1138 |
my $t = shift; |
| 1139 |
|
| 1140 |
## NOTE: This function is not intended for roundtrip-able serialization. |
| 1141 |
|
| 1142 |
if ($t->{type} == IDENT_TOKEN) { |
| 1143 |
return $t->{value}; |
| 1144 |
} elsif ($t->{type} == ATKEYWORD_TOKEN) { |
| 1145 |
return '@' . $t->{value}; |
| 1146 |
} elsif ($t->{type} == HASH_TOKEN) { |
| 1147 |
return '#' . $t->{value}; |
| 1148 |
} elsif ($t->{type} == FUNCTION_TOKEN) { |
| 1149 |
return $t->{value} . '('; |
| 1150 |
} elsif ($t->{type} == URI_TOKEN) { |
| 1151 |
return 'url(' . $t->{value} . ')'; |
| 1152 |
} elsif ($t->{type} == URI_INVALID_TOKEN) { |
| 1153 |
return 'url(' . $t->{value}; |
| 1154 |
} elsif ($t->{type} == URI_PREFIX_TOKEN) { |
| 1155 |
return 'url-prefix(' . $t->{value} . ')'; |
| 1156 |
} elsif ($t->{type} == URI_PREFIX_INVALID_TOKEN) { |
| 1157 |
return 'url-prefix(' . $t->{value}; |
| 1158 |
} elsif ($t->{type} == STRING_TOKEN) { |
| 1159 |
return '"' . $t->{value} . '"'; |
| 1160 |
} elsif ($t->{type} == INVALID_TOKEN) { |
| 1161 |
return '"' . $t->{value}; |
| 1162 |
} elsif ($t->{type} == NUMBER_TOKEN) { |
| 1163 |
return $t->{number}; |
| 1164 |
} elsif ($t->{type} == DIMENSION_TOKEN) { |
| 1165 |
return $t->{number} . $t->{value}; |
| 1166 |
} elsif ($t->{type} == PERCENTAGE_TOKEN) { |
| 1167 |
return $t->{number} . '%'; |
| 1168 |
} elsif ($t->{type} == UNICODE_RANGE_TOKEN) { |
| 1169 |
return 'U+' . $t->{value}; |
| 1170 |
} elsif ($t->{type} == DELIM_TOKEN) { |
| 1171 |
return $t->{value}; |
| 1172 |
} elsif ($t->{type} == PLUS_TOKEN) { |
| 1173 |
return '+'; |
| 1174 |
} elsif ($t->{type} == GREATER_TOKEN) { |
| 1175 |
return '>'; |
| 1176 |
} elsif ($t->{type} == COMMA_TOKEN) { |
| 1177 |
return ','; |
| 1178 |
} elsif ($t->{type} == TILDE_TOKEN) { |
| 1179 |
return '~'; |
| 1180 |
} elsif ($t->{type} == DASHMATCH_TOKEN) { |
| 1181 |
return '|='; |
| 1182 |
} elsif ($t->{type} == PREFIXMATCH_TOKEN) { |
| 1183 |
return '^='; |
| 1184 |
} elsif ($t->{type} == SUFFIXMATCH_TOKEN) { |
| 1185 |
return '$='; |
| 1186 |
} elsif ($t->{type} == SUBSTRINGMATCH_TOKEN) { |
| 1187 |
return '*='; |
| 1188 |
} elsif ($t->{type} == INCLUDES_TOKEN) { |
| 1189 |
return '~='; |
| 1190 |
} elsif ($t->{type} == SEMICOLON_TOKEN) { |
| 1191 |
return ';'; |
| 1192 |
} elsif ($t->{type} == LBRACE_TOKEN) { |
| 1193 |
return '{'; |
| 1194 |
} elsif ($t->{type} == RBRACE_TOKEN) { |
| 1195 |
return '}'; |
| 1196 |
} elsif ($t->{type} == LPAREN_TOKEN) { |
| 1197 |
return '('; |
| 1198 |
} elsif ($t->{type} == RPAREN_TOKEN) { |
| 1199 |
return ')'; |
| 1200 |
} elsif ($t->{type} == LBRACKET_TOKEN) { |
| 1201 |
return '['; |
| 1202 |
} elsif ($t->{type} == RBRACKET_TOKEN) { |
| 1203 |
return ']'; |
| 1204 |
} elsif ($t->{type} == S_TOKEN) { |
| 1205 |
return ' '; |
| 1206 |
} elsif ($t->{type} == CDO_TOKEN) { |
| 1207 |
return '<!--'; |
| 1208 |
} elsif ($t->{type} == CDC_TOKEN) { |
| 1209 |
return '-->'; |
| 1210 |
} elsif ($t->{type} == COMMENT_TOKEN) { |
| 1211 |
return '/**/'; |
| 1212 |
} elsif ($t->{type} == COMMENT_INVALID_TOKEN) { |
| 1213 |
return '/*'; |
| 1214 |
} elsif ($t->{type} == EOF_TOKEN) { |
| 1215 |
return '{EOF}'; |
| 1216 |
} elsif ($t->{type} == MINUS_TOKEN) { |
| 1217 |
return '-'; |
| 1218 |
} elsif ($t->{type} == STAR_TOKEN) { |
| 1219 |
return '*'; |
| 1220 |
} elsif ($t->{type} == VBAR_TOKEN) { |
| 1221 |
return '|'; |
| 1222 |
} elsif ($t->{type} == COLON_TOKEN) { |
| 1223 |
return ':'; |
| 1224 |
} elsif ($t->{type} == MATCH_TOKEN) { |
| 1225 |
return '='; |
| 1226 |
} elsif ($t->{type} == EXCLAMATION_TOKEN) { |
| 1227 |
return '!'; |
| 1228 |
} else { |
| 1229 |
return '{'.$t->{type}.'}'; |
| 1230 |
} |
| 1231 |
} # serialize_token |
| 1232 |
|
| 1233 |
=head1 LICENSE |
| 1234 |
|
| 1235 |
Copyright 2007 Wakaba <w@suika.fam.cx> |
| 1236 |
|
| 1237 |
This library is free software; you can redistribute it |
| 1238 |
and/or modify it under the same terms as Perl itself. |
| 1239 |
|
| 1240 |
=cut |
| 1241 |
|
| 1242 |
1; |
| 1243 |
# $Date: 2007/10/17 10:46:26 $ |
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