"""productions for CSS 2.1 CSS2_1_MACROS and CSS2_1_PRODUCTIONS are from both http://www.w3.org/TR/CSS21/grammar.html and http://www.w3.org/TR/css3-syntax/#grammar0 """ __all__ = ['CSSProductions', 'MACROS', 'PRODUCTIONS'] # option case-insensitive MACROS = { 'h': r'[0-9a-f]', # 'nonascii': r'[\200-\377]', 'nonascii': r'[^\0-\177]', # CSS3 'unicode': r'\\{h}{1,6}(\r\n|[ \t\r\n\f])?', 'escape': r'{unicode}|\\[^\r\n\f0-9a-f]', 'nmstart': r'[_a-zA-Z]|{nonascii}|{escape}', 'nmchar': r'[_a-zA-Z0-9-]|{nonascii}|{escape}', 'string1': r'\"([^\n\r\f\\"]|\\{nl}|{escape})*\"', 'string2': r"\'([^\n\r\f\\']|\\{nl}|{escape})*\'", 'invalid1': r'\"([^\n\r\f\\"]|\\{nl}|{escape})*', 'invalid2': r"\'([^\n\r\f\\']|\\{nl}|{escape})*", 'comment': r'\/\*[^*]*\*+([^/*][^*]*\*+)*\/', # CSS list 080725 19:43 # \/\*([^*\\]|{escape})*\*+(([^/*\\]|{escape})[^*]*\*+)*\/ 'ident': r'[-]?{nmstart}{nmchar}*', 'name': r'{nmchar}+', # CHANGED TO SPEC: added "-?" 'num': r'-?[0-9]*\.[0-9]+|[0-9]+', 'string': r'{string1}|{string2}', 'invalid': r'{invalid1}|{invalid2}', 'url': r'([!#$%&*-~]|{nonascii}|{escape})*', 's': r'[ \t\r\n\f]+', 'w': r'{s}?', 'nl': r'\n|\r\n|\r|\f', 'range': r'\?{1,6}|{h}(\?{0,5}|{h}(\?{0,4}|{h}(\?{0,3}|{h}(\?{0,2}|{h}(\??|{h})))))', 'A': r'a|\\0{0,4}(41|61)(\r\n|[ \t\r\n\f])?', 'C': r'c|\\0{0,4}(43|63)(\r\n|[ \t\r\n\f])?', 'D': r'd|\\0{0,4}(44|64)(\r\n|[ \t\r\n\f])?', 'E': r'e|\\0{0,4}(45|65)(\r\n|[ \t\r\n\f])?', 'F': r'f|\\0{0,4}(46|66)(\r\n|[ \t\r\n\f])?', 'G': r'g|\\0{0,4}(47|67)(\r\n|[ \t\r\n\f])?|\\g', 'H': r'h|\\0{0,4}(48|68)(\r\n|[ \t\r\n\f])?|\\h', 'I': r'i|\\0{0,4}(49|69)(\r\n|[ \t\r\n\f])?|\\i', 'K': r'k|\\0{0,4}(4b|6b)(\r\n|[ \t\r\n\f])?|\\k', 'M': r'm|\\0{0,4}(4d|6d)(\r\n|[ \t\r\n\f])?|\\m', 'N': r'n|\\0{0,4}(4e|6e)(\r\n|[ \t\r\n\f])?|\\n', 'O': r'o|\\0{0,4}(51|71)(\r\n|[ \t\r\n\f])?|\\o', 'P': r'p|\\0{0,4}(50|70)(\r\n|[ \t\r\n\f])?|\\p', 'R': r'r|\\0{0,4}(52|72)(\r\n|[ \t\r\n\f])?|\\r', 'S': r's|\\0{0,4}(53|73)(\r\n|[ \t\r\n\f])?|\\s', 'T': r't|\\0{0,4}(54|74)(\r\n|[ \t\r\n\f])?|\\t', 'X': r'x|\\0{0,4}(58|78)(\r\n|[ \t\r\n\f])?|\\x', 'Z': r'z|\\0{0,4}(5a|7a)(\r\n|[ \t\r\n\f])?|\\z', } PRODUCTIONS = [ ('URI', r'url\({w}{string}{w}\)'), # "url("{w}{string}{w}")" {return URI;} ('URI', r'url\({w}{url}{w}\)'), # "url("{w}{url}{w}")" {return URI;} ('FUNCTION', r'{ident}\('), # {ident}"(" {return FUNCTION;} ('IMPORT_SYM', r'@{I}{M}{P}{O}{R}{T}'), # "@import" {return IMPORT_SYM;} ('PAGE_SYM', r'@{P}{A}{G}{E}'), # "@page" {return PAGE_SYM;} ('MEDIA_SYM', r'@{M}{E}{D}{I}{A}'), # "@media" {return MEDIA_SYM;} ( 'FONT_FACE_SYM', r'@{F}{O}{N}{T}\-{F}{A}{C}{E}', ), # "@font-face" {return FONT_FACE_SYM;} # CHANGED TO SPEC: only @charset ('CHARSET_SYM', r'@charset '), # "@charset " {return CHARSET_SYM;} ( 'NAMESPACE_SYM', r'@{N}{A}{M}{E}{S}{P}{A}{C}{E}', ), # "@namespace" {return NAMESPACE_SYM;} # CHANGED TO SPEC: ATKEYWORD ('ATKEYWORD', r'\@{ident}'), ('IDENT', r'{ident}'), # {ident} {return IDENT;} ('STRING', r'{string}'), # {string} {return STRING;} ('INVALID', r'{invalid}'), # {return INVALID; /* unclosed string */} ('HASH', r'\#{name}'), # "#"{name} {return HASH;} ('PERCENTAGE', r'{num}%'), # {num}% {return PERCENTAGE;} ('LENGTH', r'{num}{E}{M}'), # {num}em {return EMS;} ('LENGTH', r'{num}{E}{X}'), # {num}ex {return EXS;} ('LENGTH', r'{num}{P}{X}'), # {num}px {return LENGTH;} ('LENGTH', r'{num}{C}{M}'), # {num}cm {return LENGTH;} ('LENGTH', r'{num}{M}{M}'), # {num}mm {return LENGTH;} ('LENGTH', r'{num}{I}{N}'), # {num}in {return LENGTH;} ('LENGTH', r'{num}{P}{T}'), # {num}pt {return LENGTH;} ('LENGTH', r'{num}{P}{C}'), # {num}pc {return LENGTH;} ('ANGLE', r'{num}{D}{E}{G}'), # {num}deg {return ANGLE;} ('ANGLE', r'{num}{R}{A}{D}'), # {num}rad {return ANGLE;} ('ANGLE', r'{num}{G}{R}{A}{D}'), # {num}grad {return ANGLE;} ('TIME', r'{num}{M}{S}'), # {num}ms {return TIME;} ('TIME', r'{num}{S}'), # {num}s {return TIME;} ('FREQ', r'{num}{H}{Z}'), # {num}Hz {return FREQ;} ('FREQ', r'{num}{K}{H}{Z}'), # {num}kHz {return FREQ;} ('DIMEN', r'{num}{ident}'), # {num}{ident} {return DIMEN;} ('NUMBER', r'{num}'), # {num} {return NUMBER;} # ('UNICODERANGE', r'U\+{range}'), #U\+{range} {return UNICODERANGE;} # ('UNICODERANGE', r'U\+{h}{1,6}-{h}{1,6}'), #U\+{h}{1,6}-{h}{1,6} {return UNICODERANGE;} # noqa # --- CSS3 --- ('UNICODE-RANGE', r'[0-9A-F?]{1,6}(\-[0-9A-F]{1,6})?'), ('CDO', r'\<\!\-\-'), # "" {return CDC;} ('S', r'{s}'), # {return S;} # \/\*[^*]*\*+([^/*][^*]*\*+)*\/ /* ignore comments */ # {s}+\/\*[^*]*\*+([^/*][^*]*\*+)*\/ {unput(' '); /*replace by space*/} ('INCLUDES', r'\~\='), # "~=" {return INCLUDES;} ('DASHMATCH', r'\|\='), # "|=" {return DASHMATCH;} ('LBRACE', r'\{'), # {w}"{" {return LBRACE;} ('PLUS', r'\+'), # {w}"+" {return PLUS;} ('GREATER', r'\>'), # {w}">" {return GREATER;} ('COMMA', r'\,'), # {w}"," {return COMMA;} ( 'IMPORTANT_SYM', r'\!({w}|{comment})*{I}{M}{P}{O}{R}{T}{A}{N}{T}', ), # "!{w}important" {return IMPORTANT_SYM;} ('COMMENT', r'\/\*[^*]*\*+([^/][^*]*\*+)*\/'), # /* ignore comments */ ('CLASS', r'\.'), # . {return *yytext;} # --- CSS3! --- ('CHAR', r'[^"\']'), ] class CSSProductions: pass for t in PRODUCTIONS: setattr(CSSProductions, t[0].replace('-', '_'), t[0])