Whatpm/CSS/Parser.pm

package Whatpm::CSS::Parser;
use strict;
use Whatpm::CSS::Tokenizer qw(:token);
require Whatpm::CSS::SelectorsParser;

sub new ($) {
  my $self = bless {onerror => sub { }, must_level => 'm',
                    message_level => 'w',
                    unsupported_level => 'unsupported'}, shift;

  return $self;
} # new

sub BEFORE_STATEMENT_STATE () { 0 }
sub BEFORE_DECLARATION_STATE () { 1 }
sub IGNORED_STATEMENT_STATE () { 2 }
sub IGNORED_DECLARATION_STATE () { 3 }

our $Prop; ## By CSS property name
our $Attr; ## By CSSOM attribute name
our $Key; ## By internal key

sub parse_char_string ($$) {
  my $self = $_[0];

  my $s = $_[1];
  pos ($s) = 0;
  my $line = 1;
  my $column = 0;

  my $_onerror = $self->{onerror};
  my $onerror = sub {
    $_onerror->(@_, line => $line, column => $column);
  };
  
  my $tt = Whatpm::CSS::Tokenizer->new;
  $tt->{onerror} = $onerror;
  $tt->{get_char} = sub {
    if (pos $s < length $s) {
      my $c = ord substr $s, pos ($s)++, 1;
      if ($c == 0x000A) {
        $line++;
        $column = 0;
      } elsif ($c == 0x000D) {
        unless (substr ($s, pos ($s), 1) eq "\x0A") {
          $line++;
          $column = 0;
        } else {
          $column++;
        }
      } else {
        $column++;
      }
      return $c;
    } else {
      return -1;
    }
  }; # $tt->{get_char}
  $tt->init;

  my $sp = Whatpm::CSS::SelectorsParser->new;
  $sp->{onerror} = $onerror;
  $sp->{must_level} = $self->{must_level};
  $sp->{pseudo_element} = $self->{pseudo_element};
  $sp->{pseudo_class} = $self->{pseudo_class};

  my $nsmap = {};
  $sp->{lookup_namespace_uri} = sub {
    return $nsmap->{$_[0]}; # $_[0] is '' (default namespace) or prefix
  }; # $sp->{lookup_namespace_uri}

  ## TODO: Supported pseudo classes and elements...

  require Message::DOM::CSSStyleSheet;
  require Message::DOM::CSSRule;
  require Message::DOM::CSSStyleDeclaration;

  my $state = BEFORE_STATEMENT_STATE;
  my $t = $tt->get_next_token;

  my $open_rules = [[]];
  my $current_rules = $open_rules->[-1];
  my $current_decls;
  my $closing_tokens = [];
  my $charset_allowed = 1;
  my $namespace_allowed = 1;

  S: {
    if ($state == BEFORE_STATEMENT_STATE) {
      $t = $tt->get_next_token
          while $t->{type} == S_TOKEN or
              $t->{type} == CDO_TOKEN or
              $t->{type} == CDC_TOKEN;

      if ($t->{type} == ATKEYWORD_TOKEN) {
        if (lc $t->{value} eq 'namespace') { ## TODO: case folding
          $t = $tt->get_next_token;
          $t = $tt->get_next_token while $t->{type} == S_TOKEN;

          my $prefix;
          if ($t->{type} == IDENT_TOKEN) {
            $prefix = lc $t->{value};
            ## TODO: Unicode lowercase
            
            $t = $tt->get_next_token;
            $t = $tt->get_next_token while $t->{type} == S_TOKEN;
          }

          if ($t->{type} == STRING_TOKEN or $t->{type} == URI_TOKEN) {
            my $uri = $t->{value};
            
            $t = $tt->get_next_token;
            $t = $tt->get_next_token while $t->{type} == S_TOKEN;

            ## ISSUE: On handling of empty namespace URI, Firefox 2 and
            ## Opera 9 work differently (See SuikaWiki:namespace).
            ## TODO: We need to check what we do once it is specced.

            if ($t->{type} == SEMICOLON_TOKEN) {
              if ($namespace_allowed) {
                $nsmap->{defined $prefix ? $prefix : ''} = $uri;
                push @$current_rules,
                    Message::DOM::CSSNamespaceRule->____new ($prefix, $uri);
                undef $charset_allowed;
                undef $namespace_allowed;
              } else {
                $onerror->(type => 'at:namespace:not allowed',
                           level => $self->{must_level},
                           token => $t);
              }
              
              $t = $tt->get_next_token;
              ## Stay in the state.
              redo S;
            } else {
              #
            }
          } else {
            #
          }

          $onerror->(type => 'syntax error:at:namespace',
                     level => $self->{must_level},
                     token => $t);
          #
        } elsif (lc $t->{value} eq 'charset') { ## TODO: case folding
          $t = $tt->get_next_token;
          $t = $tt->get_next_token while $t->{type} == S_TOKEN;

          if ($t->{type} == STRING_TOKEN) {
            my $encoding = $t->{value};
            
            $t = $tt->get_next_token;
            $t = $tt->get_next_token while $t->{type} == S_TOKEN;
            
            if ($t->{type} == SEMICOLON_TOKEN) {
              if ($charset_allowed) {
                push @$current_rules,
                    Message::DOM::CSSCharsetRule->____new ($encoding);
                undef $charset_allowed;
              } else {
                 $onerror->(type => 'at:charset:not allowed',
                            level => $self->{must_level},
                            token => $t);
              }

              ## TODO: Detect the conformance errors for @charset...
              
              $t = $tt->get_next_token;
              ## Stay in the state.
              redo S;
            } else {
              #
            }
          } else {
            #
          }

          $onerror->(type => 'syntax error:at:charset',
                     level => $self->{must_level},
                     token => $t);
          #
        ## NOTE: When adding support for new at-rule, insert code
        ## "undef $charset_allowed" and "undef $namespace_token" as
        ## appropriate.
        } else {
          $onerror->(type => 'not supported:at:'.$t->{value},
                     level => $self->{unsupported_level},
                     token => $t);
        }

        $t = $tt->get_next_token;
        $state = IGNORED_STATEMENT_STATE;
        redo S;
      } elsif (@$open_rules > 1 and $t->{type} == RBRACE_TOKEN) {
        pop @$open_rules;
        ## Stay in the state.
        $t = $tt->get_next_token;
        redo S;
      } elsif ($t->{type} == EOF_TOKEN) {
        if (@$open_rules > 1) {
          $onerror->(type => 'syntax error:block not closed',
                     level => $self->{must_level},
                     token => $t);
        }

        last S;
      } else {
        undef $charset_allowed;
        undef $namespace_allowed;

        ($t, my $selectors) = $sp->_parse_selectors_with_tokenizer
            ($tt, LBRACE_TOKEN, $t);

        $t = $tt->get_next_token
            while $t->{type} != LBRACE_TOKEN and $t->{type} != EOF_TOKEN;

        if ($t->{type} == LBRACE_TOKEN) {
          $current_decls = Message::DOM::CSSStyleDeclaration->____new;
          my $rs = Message::DOM::CSSStyleRule->____new
              ($selectors, $current_decls);
          push @{$current_rules}, $rs if defined $selectors;

          $state = BEFORE_DECLARATION_STATE;
          $t = $tt->get_next_token;
          redo S;
        } else {
          $onerror->(type => 'syntax error:after selectors',
                     level => $self->{must_level},
                     token => $t);

          ## Stay in the state.
          $t = $tt->get_next_token;
          redo S;
        }
      }
    } elsif ($state == BEFORE_DECLARATION_STATE) {
      ## NOTE: DELIM? in declaration will be removed:
      ## <http://csswg.inkedblade.net/spec/css2.1?s=declaration%20delim#issue-2>.

      my $prop_def;
      my $prop_value;
      my $prop_flag;
      $t = $tt->get_next_token while $t->{type} == S_TOKEN;
      if ($t->{type} == IDENT_TOKEN) { # property
        my $prop_name = lc $t->{value}; ## TODO: case folding
        $t = $tt->get_next_token;
        if ($t->{type} == COLON_TOKEN) {
          $t = $tt->get_next_token;
          $t = $tt->get_next_token while $t->{type} == S_TOKEN;

          $prop_def = $Prop->{$prop_name};
          if ($prop_def) {
            ($t, $prop_value)
                = $prop_def->{parse}->($self, $prop_name, $tt, $t, $onerror);
            if ($prop_value) {
              ## NOTE: {parse} don't have to consume trailing spaces.
              $t = $tt->get_next_token while $t->{type} == S_TOKEN;

              if ($t->{type} == EXCLAMATION_TOKEN) {
                $t = $tt->get_next_token;
                $t = $tt->get_next_token while $t->{type} == S_TOKEN;
                if ($t->{type} == IDENT_TOKEN and
                    lc $t->{value} eq 'important') { ## TODO: case folding
                  $prop_flag = 'important';
                  
                  $t = $tt->get_next_token;
                  $t = $tt->get_next_token while $t->{type} == S_TOKEN;

                  #
                } else {
                  $onerror->(type => 'syntax error:important',
                             level => $self->{must_level},
                             token => $t);
                  
                  ## Reprocess.
                  $state = IGNORED_DECLARATION_STATE;
                  redo S;
                }
              }

              #
            } else {
              ## Syntax error.
        
              ## Reprocess.
              $state = IGNORED_DECLARATION_STATE;
              redo S;
            }
          } else {
            $onerror->(type => 'not supported:property',
                       level => $self->{unsupported_level},
                       token => $t, value => $prop_name);

            #
            $state = IGNORED_DECLARATION_STATE;
            redo S;
          }
        } else {
          $onerror->(type => 'syntax error:property colon',
                     level => $self->{must_level},
                     token => $t);

          #
          $state = IGNORED_DECLARATION_STATE;
          redo S;
        }
      }

      if ($t->{type} == RBRACE_TOKEN) {
        $t = $tt->get_next_token;
        $state = BEFORE_STATEMENT_STATE;
        #redo S;
      } elsif ($t->{type} == SEMICOLON_TOKEN) {
        $t = $tt->get_next_token;
        ## Stay in the state.
        #redo S;
      } elsif ($t->{type} == EOF_TOKEN) {
        $onerror->(type => 'syntax error:ruleset not closed',
                   level => $self->{must_level},
                   token => $t);
        ## Reprocess.
        $state = BEFORE_STATEMENT_STATE;
        #redo S;
      } else {
        if ($prop_value) {
          $onerror->(type => 'syntax error:property semicolon',
                     level => $self->{must_level},
                     token => $t);
        } else {
          $onerror->(type => 'syntax error:property name',
                     level => $self->{must_level},
                     token => $t);
        }

        #
        $state = IGNORED_DECLARATION_STATE;
        redo S;
      }

      if ($prop_value) {
        $$current_decls->{$prop_def->{key}} = [$prop_value, $prop_flag];
      }
      redo S;
    } elsif ($state == IGNORED_STATEMENT_STATE or
             $state == IGNORED_DECLARATION_STATE) {
      if (@$closing_tokens) { ## Something is yet in opening state.
        if ($t->{type} == EOF_TOKEN) {
          @$closing_tokens = ();
          ## Reprocess.
          $state = $state == IGNORED_STATEMENT_STATE
              ? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
          redo S;
        } elsif ($t->{type} == $closing_tokens->[-1]) {
          pop @$closing_tokens;
          if (@$closing_tokens == 0 and
              $t->{type} == RBRACE_TOKEN and
              $state == IGNORED_STATEMENT_STATE) {
            $t = $tt->get_next_token;
            $state = BEFORE_STATEMENT_STATE;
            redo S;
          } else {
            $t = $tt->get_next_token;
            ## Stay in the state.
            redo S;
          }
        } else {
          #
        }
      } else {
        if ($t->{type} == SEMICOLON_TOKEN) {
          $t = $tt->get_next_token;
          $state = $state == IGNORED_STATEMENT_STATE
              ? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
          redo S;
        } elsif ($state == IGNORED_DECLARATION_STATE and
                 $t->{type} == RBRACE_TOKEN) {
          $t = $tt->get_next_token;
          $state = BEFORE_STATEMENT_STATE;
          redo S;
        } elsif ($t->{type} == EOF_TOKEN) {
          ## Reprocess.
          $state = $state == IGNORED_STATEMENT_STATE
              ? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
          redo S;
        } else {
          #
        }
      }

      while (not {
        EOF_TOKEN, 1,
        RBRACE_TOKEN, 1,
        RBRACKET_TOKEN, 1,
        RPAREN_TOKEN, 1,
        SEMICOLON_TOKEN, 1,
      }->{$t->{type}}) {
        if ($t->{type} == LBRACE_TOKEN) {
          push @$closing_tokens, RBRACE_TOKEN;
        } elsif ($t->{type} == LBRACKET_TOKEN) {
          push @$closing_tokens, RBRACKET_TOKEN;
        } elsif ($t->{type} == LPAREN_TOKEN or $t->{type} == FUNCTION_TOKEN) {
          push @$closing_tokens, RPAREN_TOKEN;
        }

        $t = $tt->get_next_token;
      }

      #
      ## Stay in the state.
      redo S;
    } else {
      die "$0: parse_char_string: Unknown state: $state";
    }
  } # S

  my $ss = Message::DOM::CSSStyleSheet->____new
      (css_rules => $open_rules->[0],
       ## TODO: href
       ## TODO: owner_node
       ## TODO: media
       type => 'text/css', ## TODO: OK?
       _parser => $self);
  return $ss;
} # parse_char_string

$Prop->{color} = {
  css => 'color',
  dom => 'color',
  key => 'color',
  parse => sub {
    my ($self, $prop_name, $tt, $t, $onerror) = @_;

    if ($t->{type} == IDENT_TOKEN) {
      if (lc $t->{value} eq 'blue') { ## TODO: case folding
        $t = $tt->get_next_token;
        return ($t, ["RGBA", 0, 0, 255, 0]);
      } else {
        #
      }
    } else {
      #
    }

    $onerror->(type => 'syntax error:color',
               level => $self->{must_level},
               token => $t);
    
    return ($t, undef);
  },
  serialize => sub {
    my ($self, $prop_name, $value) = @_;
    if ($value->[0] eq 'RGBA') { ## TODO: %d? %f?
      return sprintf 'rgba(%d, %d, %d, %f)', @$value[1, 2, 3, 4];
    } else {
      return undef;
    }
  },
};
$Attr->{color} = $Prop->{color};
$Key->{color} = $Prop->{color};

1;
## $Date: 2007/12/23 15:47:09 $
1	wakaba	1.1	package Whatpm::CSS::Parser;
2			use strict;
3			use Whatpm::CSS::Tokenizer qw(:token);
4			require Whatpm::CSS::SelectorsParser;
5
6			sub new ($) {
7	wakaba	1.3	my $self = bless {onerror => sub { }, must_level => 'm',
8	wakaba	1.5	message_level => 'w',
9	wakaba	1.3	unsupported_level => 'unsupported'}, shift;
10	wakaba	1.1
11			return $self;
12			} # new
13
14			sub BEFORE_STATEMENT_STATE () { 0 }
15			sub BEFORE_DECLARATION_STATE () { 1 }
16			sub IGNORED_STATEMENT_STATE () { 2 }
17			sub IGNORED_DECLARATION_STATE () { 3 }
18
19	wakaba	1.5	our $Prop; ## By CSS property name
20			our $Attr; ## By CSSOM attribute name
21			our $Key; ## By internal key
22
23	wakaba	1.1	sub parse_char_string ($$) {
24			my $self = $_[0];
25
26			my $s = $_[1];
27			pos ($s) = 0;
28	wakaba	1.2	my $line = 1;
29			my $column = 0;
30
31			my $_onerror = $self->{onerror};
32			my $onerror = sub {
33			$_onerror->(@_, line => $line, column => $column);
34			};
35	wakaba	1.1
36			my $tt = Whatpm::CSS::Tokenizer->new;
37	wakaba	1.2	$tt->{onerror} = $onerror;
38	wakaba	1.1	$tt->{get_char} = sub {
39			if (pos $s < length $s) {
40	wakaba	1.2	my $c = ord substr $s, pos ($s)++, 1;
41			if ($c == 0x000A) {
42			$line++;
43			$column = 0;
44			} elsif ($c == 0x000D) {
45			unless (substr ($s, pos ($s), 1) eq "\x0A") {
46			$line++;
47			$column = 0;
48			} else {
49			$column++;
50			}
51			} else {
52			$column++;
53			}
54			return $c;
55	wakaba	1.1	} else {
56			return -1;
57			}
58			}; # $tt->{get_char}
59			$tt->init;
60
61			my $sp = Whatpm::CSS::SelectorsParser->new;
62	wakaba	1.2	$sp->{onerror} = $onerror;
63	wakaba	1.1	$sp->{must_level} = $self->{must_level};
64	wakaba	1.2	$sp->{pseudo_element} = $self->{pseudo_element};
65			$sp->{pseudo_class} = $self->{pseudo_class};
66	wakaba	1.1
67	wakaba	1.4	my $nsmap = {};
68			$sp->{lookup_namespace_uri} = sub {
69			return $nsmap->{$_[0]}; # $_[0] is '' (default namespace) or prefix
70			}; # $sp->{lookup_namespace_uri}
71	wakaba	1.1
72			## TODO: Supported pseudo classes and elements...
73
74			require Message::DOM::CSSStyleSheet;
75			require Message::DOM::CSSRule;
76			require Message::DOM::CSSStyleDeclaration;
77
78			my $state = BEFORE_STATEMENT_STATE;
79			my $t = $tt->get_next_token;
80
81			my $open_rules = [[]];
82			my $current_rules = $open_rules->[-1];
83			my $current_decls;
84			my $closing_tokens = [];
85	wakaba	1.3	my $charset_allowed = 1;
86	wakaba	1.4	my $namespace_allowed = 1;
87	wakaba	1.1
88			S: {
89			if ($state == BEFORE_STATEMENT_STATE) {
90			$t = $tt->get_next_token
91			while $t->{type} == S_TOKEN or
92			$t->{type} == CDO_TOKEN or
93			$t->{type} == CDC_TOKEN;
94
95			if ($t->{type} == ATKEYWORD_TOKEN) {
96	wakaba	1.5	if (lc $t->{value} eq 'namespace') { ## TODO: case folding
97	wakaba	1.4	$t = $tt->get_next_token;
98			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
99
100			my $prefix;
101			if ($t->{type} == IDENT_TOKEN) {
102			$prefix = lc $t->{value};
103			## TODO: Unicode lowercase
104
105			$t = $tt->get_next_token;
106			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
107			}
108
109			if ($t->{type} == STRING_TOKEN or $t->{type} == URI_TOKEN) {
110			my $uri = $t->{value};
111
112			$t = $tt->get_next_token;
113			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
114
115			## ISSUE: On handling of empty namespace URI, Firefox 2 and
116			## Opera 9 work differently (See SuikaWiki:namespace).
117			## TODO: We need to check what we do once it is specced.
118
119			if ($t->{type} == SEMICOLON_TOKEN) {
120			if ($namespace_allowed) {
121			$nsmap->{defined $prefix ? $prefix : ''} = $uri;
122			push @$current_rules,
123			Message::DOM::CSSNamespaceRule->____new ($prefix, $uri);
124			undef $charset_allowed;
125			undef $namespace_allowed;
126			} else {
127			$onerror->(type => 'at:namespace:not allowed',
128			level => $self->{must_level},
129			token => $t);
130			}
131
132			$t = $tt->get_next_token;
133			## Stay in the state.
134			redo S;
135			} else {
136			#
137			}
138			} else {
139			#
140			}
141
142			$onerror->(type => 'syntax error:at:namespace',
143			level => $self->{must_level},
144			token => $t);
145			#
146	wakaba	1.5	} elsif (lc $t->{value} eq 'charset') { ## TODO: case folding
147	wakaba	1.3	$t = $tt->get_next_token;
148			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
149
150			if ($t->{type} == STRING_TOKEN) {
151			my $encoding = $t->{value};
152
153			$t = $tt->get_next_token;
154			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
155
156			if ($t->{type} == SEMICOLON_TOKEN) {
157			if ($charset_allowed) {
158			push @$current_rules,
159			Message::DOM::CSSCharsetRule->____new ($encoding);
160			undef $charset_allowed;
161			} else {
162			$onerror->(type => 'at:charset:not allowed',
163			level => $self->{must_level},
164			token => $t);
165			}
166
167			## TODO: Detect the conformance errors for @charset...
168
169			$t = $tt->get_next_token;
170			## Stay in the state.
171			redo S;
172			} else {
173			#
174			}
175			} else {
176			#
177			}
178
179			$onerror->(type => 'syntax error:at:charset',
180			level => $self->{must_level},
181			token => $t);
182	wakaba	1.4	#
183	wakaba	1.3	## NOTE: When adding support for new at-rule, insert code
184	wakaba	1.4	## "undef $charset_allowed" and "undef $namespace_token" as
185			## appropriate.
186	wakaba	1.3	} else {
187			$onerror->(type => 'not supported:at:'.$t->{value},
188			level => $self->{unsupported_level},
189			token => $t);
190			}
191	wakaba	1.1
192			$t = $tt->get_next_token;
193			$state = IGNORED_STATEMENT_STATE;
194			redo S;
195			} elsif (@$open_rules > 1 and $t->{type} == RBRACE_TOKEN) {
196			pop @$open_rules;
197			## Stay in the state.
198			$t = $tt->get_next_token;
199			redo S;
200			} elsif ($t->{type} == EOF_TOKEN) {
201			if (@$open_rules > 1) {
202	wakaba	1.2	$onerror->(type => 'syntax error:block not closed',
203			level => $self->{must_level},
204			token => $t);
205	wakaba	1.1	}
206
207			last S;
208			} else {
209	wakaba	1.3	undef $charset_allowed;
210	wakaba	1.4	undef $namespace_allowed;
211	wakaba	1.3
212	wakaba	1.1	($t, my $selectors) = $sp->_parse_selectors_with_tokenizer
213			($tt, LBRACE_TOKEN, $t);
214
215			$t = $tt->get_next_token
216			while $t->{type} != LBRACE_TOKEN and $t->{type} != EOF_TOKEN;
217
218			if ($t->{type} == LBRACE_TOKEN) {
219			$current_decls = Message::DOM::CSSStyleDeclaration->____new;
220			my $rs = Message::DOM::CSSStyleRule->____new
221			($selectors, $current_decls);
222			push @{$current_rules}, $rs if defined $selectors;
223
224			$state = BEFORE_DECLARATION_STATE;
225			$t = $tt->get_next_token;
226			redo S;
227			} else {
228	wakaba	1.2	$onerror->(type => 'syntax error:after selectors',
229			level => $self->{must_level},
230			token => $t);
231	wakaba	1.1
232			## Stay in the state.
233			$t = $tt->get_next_token;
234			redo S;
235			}
236			}
237			} elsif ($state == BEFORE_DECLARATION_STATE) {
238			## NOTE: DELIM? in declaration will be removed:
239			## <http://csswg.inkedblade.net/spec/css2.1?s=declaration%20delim#issue-2>.
240
241	wakaba	1.5	my $prop_def;
242			my $prop_value;
243			my $prop_flag;
244	wakaba	1.1	$t = $tt->get_next_token while $t->{type} == S_TOKEN;
245			if ($t->{type} == IDENT_TOKEN) { # property
246	wakaba	1.5	my $prop_name = lc $t->{value}; ## TODO: case folding
247			$t = $tt->get_next_token;
248			if ($t->{type} == COLON_TOKEN) {
249			$t = $tt->get_next_token;
250			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
251
252			$prop_def = $Prop->{$prop_name};
253			if ($prop_def) {
254			($t, $prop_value)
255			= $prop_def->{parse}->($self, $prop_name, $tt, $t, $onerror);
256			if ($prop_value) {
257			## NOTE: {parse} don't have to consume trailing spaces.
258			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
259
260			if ($t->{type} == EXCLAMATION_TOKEN) {
261			$t = $tt->get_next_token;
262			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
263			if ($t->{type} == IDENT_TOKEN and
264			lc $t->{value} eq 'important') { ## TODO: case folding
265			$prop_flag = 'important';
266
267			$t = $tt->get_next_token;
268			$t = $tt->get_next_token while $t->{type} == S_TOKEN;
269
270			#
271			} else {
272			$onerror->(type => 'syntax error:important',
273			level => $self->{must_level},
274			token => $t);
275
276			## Reprocess.
277			$state = IGNORED_DECLARATION_STATE;
278			redo S;
279			}
280			}
281
282			#
283			} else {
284			## Syntax error.
285
286			## Reprocess.
287			$state = IGNORED_DECLARATION_STATE;
288			redo S;
289			}
290			} else {
291			$onerror->(type => 'not supported:property',
292			level => $self->{unsupported_level},
293			token => $t, value => $prop_name);
294
295			#
296			$state = IGNORED_DECLARATION_STATE;
297			redo S;
298			}
299			} else {
300			$onerror->(type => 'syntax error:property colon',
301			level => $self->{must_level},
302			token => $t);
303	wakaba	1.1
304	wakaba	1.5	#
305			$state = IGNORED_DECLARATION_STATE;
306			redo S;
307			}
308			}
309
310			if ($t->{type} == RBRACE_TOKEN) {
311	wakaba	1.1	$t = $tt->get_next_token;
312	wakaba	1.5	$state = BEFORE_STATEMENT_STATE;
313			#redo S;
314			} elsif ($t->{type} == SEMICOLON_TOKEN) {
315	wakaba	1.1	$t = $tt->get_next_token;
316	wakaba	1.5	## Stay in the state.
317			#redo S;
318	wakaba	1.1	} elsif ($t->{type} == EOF_TOKEN) {
319	wakaba	1.2	$onerror->(type => 'syntax error:ruleset not closed',
320			level => $self->{must_level},
321			token => $t);
322	wakaba	1.1	## Reprocess.
323			$state = BEFORE_STATEMENT_STATE;
324	wakaba	1.5	#redo S;
325			} else {
326			if ($prop_value) {
327			$onerror->(type => 'syntax error:property semicolon',
328			level => $self->{must_level},
329			token => $t);
330			} else {
331			$onerror->(type => 'syntax error:property name',
332			level => $self->{must_level},
333			token => $t);
334			}
335
336			#
337			$state = IGNORED_DECLARATION_STATE;
338	wakaba	1.1	redo S;
339			}
340
341	wakaba	1.5	if ($prop_value) {
342			$$current_decls->{$prop_def->{key}} = [$prop_value, $prop_flag];
343			}
344	wakaba	1.1	redo S;
345			} elsif ($state == IGNORED_STATEMENT_STATE or
346			$state == IGNORED_DECLARATION_STATE) {
347			if (@$closing_tokens) { ## Something is yet in opening state.
348			if ($t->{type} == EOF_TOKEN) {
349			@$closing_tokens = ();
350			## Reprocess.
351			$state = $state == IGNORED_STATEMENT_STATE
352			? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
353			redo S;
354			} elsif ($t->{type} == $closing_tokens->[-1]) {
355			pop @$closing_tokens;
356			if (@$closing_tokens == 0 and
357			$t->{type} == RBRACE_TOKEN and
358			$state == IGNORED_STATEMENT_STATE) {
359			$t = $tt->get_next_token;
360			$state = BEFORE_STATEMENT_STATE;
361			redo S;
362			} else {
363			$t = $tt->get_next_token;
364			## Stay in the state.
365			redo S;
366			}
367			} else {
368			#
369			}
370			} else {
371			if ($t->{type} == SEMICOLON_TOKEN) {
372			$t = $tt->get_next_token;
373			$state = $state == IGNORED_STATEMENT_STATE
374			? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
375			redo S;
376			} elsif ($state == IGNORED_DECLARATION_STATE and
377			$t->{type} == RBRACE_TOKEN) {
378			$t = $tt->get_next_token;
379			$state = BEFORE_STATEMENT_STATE;
380			redo S;
381			} elsif ($t->{type} == EOF_TOKEN) {
382			## Reprocess.
383			$state = $state == IGNORED_STATEMENT_STATE
384			? BEFORE_STATEMENT_STATE : BEFORE_DECLARATION_STATE;
385			redo S;
386			} else {
387			#
388			}
389			}
390
391			while (not {
392			EOF_TOKEN, 1,
393			RBRACE_TOKEN, 1,
394			RBRACKET_TOKEN, 1,
395			RPAREN_TOKEN, 1,
396			SEMICOLON_TOKEN, 1,
397			}->{$t->{type}}) {
398			if ($t->{type} == LBRACE_TOKEN) {
399			push @$closing_tokens, RBRACE_TOKEN;
400			} elsif ($t->{type} == LBRACKET_TOKEN) {
401			push @$closing_tokens, RBRACKET_TOKEN;
402			} elsif ($t->{type} == LPAREN_TOKEN or $t->{type} == FUNCTION_TOKEN) {
403			push @$closing_tokens, RPAREN_TOKEN;
404			}
405
406			$t = $tt->get_next_token;
407			}
408
409			#
410			## Stay in the state.
411			redo S;
412			} else {
413			die "$0: parse_char_string: Unknown state: $state";
414			}
415			} # S
416
417			my $ss = Message::DOM::CSSStyleSheet->____new
418			(css_rules => $open_rules->[0],
419			## TODO: href
420			## TODO: owner_node
421			## TODO: media
422			type => 'text/css', ## TODO: OK?
423			_parser => $self);
424			return $ss;
425			} # parse_char_string
426
427	wakaba	1.5	$Prop->{color} = {
428			css => 'color',
429			dom => 'color',
430			key => 'color',
431			parse => sub {
432			my ($self, $prop_name, $tt, $t, $onerror) = @_;
433
434			if ($t->{type} == IDENT_TOKEN) {
435			if (lc $t->{value} eq 'blue') { ## TODO: case folding
436			$t = $tt->get_next_token;
437			return ($t, ["RGBA", 0, 0, 255, 0]);
438			} else {
439			#
440			}
441			} else {
442			#
443			}
444
445			$onerror->(type => 'syntax error:color',
446			level => $self->{must_level},
447			token => $t);
448
449			return ($t, undef);
450			},
451			serialize => sub {
452			my ($self, $prop_name, $value) = @_;
453			if ($value->[0] eq 'RGBA') { ## TODO: %d? %f?
454			return sprintf 'rgba(%d, %d, %d, %f)', @$value[1, 2, 3, 4];
455			} else {
456			return undef;
457			}
458			},
459			};
460			$Attr->{color} = $Prop->{color};
461			$Key->{color} = $Prop->{color};
462
463	wakaba	1.1	1;
464	wakaba	1.5	## $Date: 2007/12/23 15:47:09 $