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| E[foo] | "foo"ãšããã¢ããªãã¥ãŒãã®Eãšãããšã¬ã¡ã³ã | ã¢ããªãã¥ãŒãã®ã»ã¬ã¯ã¿ | 2 |
| E[foo="bar"] | "foo"ãšããã¢ããªãã¥ãŒãã®å€ãå³å¯ã«"bar"ãšçããEãšãããšã¬ã¡ã³ã | ã¢ããªãã¥ãŒãã®ã»ã¬ã¯ã¿ | 2 |
| E[foo~="bar"] | "foo"ãšããã¢ããªãã¥ãŒãã®å€ãã¹ããŒã¹ã§åºåãããå€ã®ãªã¹ãã§ããããã®ã²ãšã€ãå³å¯ã«"bar"ãšçããEãšãããšã¬ã¡ã³ã | ã¢ããªãã¥ãŒãã®ã»ã¬ã¯ã¿ | 2 |
| E[foo^="bar"] | "foo"ãšããã¢ããªãã¥ãŒãã®å€ãå³å¯ã«æåå"bar"ããå§ãŸãEãšãããšã¬ã¡ã³ã | ã¢ããªãã¥ãŒãã®ã»ã¬ã¯ã¿ | 3 |
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| E[hreflang|="en"] | "hreflang"ãšããã¢ããªãã¥ãŒããã"en"ã§(å·Šãã)å§ãŸãå€ã®ãã€ãã³ã§åºåããããªã¹ãã§ããEãšãããšã¬ã¡ã³ã | ã¢ããªãã¥ãŒãã®ã»ã¬ã¯ã¿ | 2 |
| E:root | ææžã®ã«ãŒãã§ãããEãšãããšã¬ã¡ã³ã | æ§é äžã®æ¬äŒŒã¯ã©ã¹ | 3 |
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| E:nth-last-child(n) | æåŸã®ããæ°ããŠãã®èŠªã®nçªç®ã®åã§ããEãšããèŠçŽ | æ§é äžã®æ¬äŒŒã¯ã©ã¹ | 3 |
| E:nth-of-type(n) | ãã®çš®é¡ã®nçªç®ã®å åŒã§ããEãšãããšã¬ã¡ã³ã | æ§é äžã®æ¬äŒŒã¯ã©ã¹ | 3 |
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| E::selection | 䜿çšè ã«ãã£ãŠçŸåšéžæ/匷調ãããŠãããEãšãããšã¬ã¡ã³ãã®äžéš | UIã®ãšã¬ã¡ã³ãã®æçã®æ¬äŒŒãšã¬ã¡ã³ã | 3 |
| E::before | Eãšãããšã¬ã¡ã³ãã®åã«çæãããå 容 | :beforeãšããæ¬äŒŒãšã¬ã¡ã³ã | 2 |
| E::after | Eãšãããšã¬ã¡ã³ãã®åŸã«çæãããå 容 | :afterãšããæ¬äŒŒãšã¬ã¡ã³ã | 2 |
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| E#myid | IDã"myid"ãšçããEãšãããšã¬ã¡ã³ãã | IDã®ã»ã¬ã¯ã¿ | 1 |
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| E > F | Eãšãããšã¬ã¡ã³ãã®åã§ããFãšãããšã¬ã¡ã³ã | åã®çµåå | 2 |
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CSSã®äŸ:
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foo|* { color: yellow }
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*|h1 { color: green }
h1 { color: green }
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CSSã®äŸ:
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[att] { color: green }
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P { color: red; font-size: 12pt }
P::first-letter { color: green; font-size: 200% }
P::first-line { color: blue }
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* /* a=0 b=0 c=0 -> ç¹æ®æ§ = 0 */ LI /* a=0 b=0 c=1 -> ç¹æ®æ§ = 1 */ UL LI /* a=0 b=0 c=2 -> ç¹æ®æ§ = 2 */ UL OL+LI /* a=0 b=0 c=3 -> ç¹æ®æ§ = 3 */ H1 + *[REL=up] /* a=0 b=1 c=1 -> ç¹æ®æ§ = 11 */ UL OL LI.red /* a=0 b=1 c=3 -> ç¹æ®æ§ = 13 */ LI.red.level /* a=0 b=2 c=1 -> ç¹æ®æ§ = 21 */ #x34y /* a=1 b=0 c=0 -> ç¹æ®æ§ = 100 */ #s12:not(FOO) /* a=1 b=0 c=1 -> ç¹æ®æ§ = 101 */
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selectors_group
: selector [ ',' S* selector ]*
;
selector
/* there is at least one sequence of simple selectors in a */
/* selector and the pseudo-elements occur only in the last */
/* sequence ; only pseudo-element may occur */
: [ simple_selector_sequence combinator ]*
simple_selector_sequence [ pseudo_element ]?
;
combinator
/* combinators can be surrounded by white space */
: S* [ '+' | '>' | '~' | /* empty */ ] S*
;
simple_selector_sequence
/* the universal selector is optional */
: [ type_selector | universal ]?
[ HASH | class | attrib | pseudo_class | negation ]+ |
type_selector | universal
;
type_selector
: [ namespace_prefix ]? element_name
;
namespace_prefix
: [ IDENT | '*' ]? '|'
;
element_name
: IDENT
;
universal
: [ namespace_prefix ]? '*'
;
class
: '.' IDENT
;
attrib
: '[' S* [ namespace_prefix ]? IDENT S*
[ [ PREFIXMATCH |
SUFFIXMATCH |
SUBSTRINGMATCH |
'=' |
INCLUDES |
DASHMATCH ] S* [ IDENT | STRING ] S*
]? ']'
;
pseudo_class
/* a pseudo-class is an ident, or a function taking an */
/* ident or a string or a number or a simple selector */
/* (excluding negation and pseudo-elements) */
/* or a an+b expression for argument */
: ':' [ IDENT | functional_pseudo ]
;
functional_pseudo
: FUNCTION S* [ IDENT | STRING | NUMBER |
expression | negation_arg ] S* ')'
;
expression
: [ [ '-' | INTEGER ]? 'n' [ SIGNED_INTEGER ]? ] | INTEGER
;
negation_arg
: type_selector | universal | HASH | class | attrib | pseudo_class
;
pseudo_element
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;
ã§ããã
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%option case-insensitive
h [0-9a-f]
nonascii [\200-\377]
unicode \\{h}{1,6}[ \t\r\n\f]?
escape {unicode}|\\[ -~\200-\377]
nmstart [a-z_]|{nonascii}|{escape}
nmchar [a-z0-9-_]|{nonascii}|{escape}
string1 \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\"
string2 \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\'
ident {nmstart}{nmchar}*
name {nmchar}+
integer [-]?[0-9]+
signed_integer [-+][0-9]+
num {integer}|[0-9]*"."[0-9]+
string {string1}|{string2}
nl \n|\r\n|\r|\f
%%
[ \t\r\n\f]+ {return S;}
\/\*[^*]*\*+([^/][^*]*\*+)*\/ /* ignore comments */
"~=" {return INCLUDES;}
"|=" {return DASHMATCH;}
"^=" (return PREFIXMATCH;)
"$=" (return SUFFIXMATCH;)
"*=" (return SUBSTRINGMATCH;)
{string} {return STRING;}
{ident} {return IDENT;}
{ident}"(" {return FUNCTION;}
{num} {return NUMBER;}
{signed_integer} {return SIGNED_INTEGER;}
{integer] {return INTEGER;}
"#"{name} {return HASH;}
. {return *yytext;}
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