Hello,
I'm currently writing an xtext plugin for css. I have a problem and I don't
find any solution. My grammar works quite well for many css files but it
fails on that:
.dj_iPad #header #formSearch.disabled {
opacity: 1;
}
However, it works for (g instead of h) :
.dj_iPad #header #gormSearch.disabled {
opacity: 1;
}
It works for any character different from a, b, c, e, f...
So I think the parser recognize that as hex character.
Can somebody help me fixing this bug ?
The grammar:
grammar css;
options {
output=AST;
ASTLabelType=CommonTree;
language=Java;
//k=4;
}
tokens {
IMPORT;
NESTED;
NEST;
RULE;
ATTRIB;
PARENTOF;
PRECEDEDS;
ATTRIBEQUAL;
HASVALUE;
BEGINSWITH;
PSEUDO;
PROPERTY;
FUNCTION;
TAG;
ID;
CLASS;
PERCENTAGE;
UNIT;
PERCENTAGE;
EMS;
EXS;
LENGTH;
ANGLE;
TIME;
FREQ;
}
stylesheet:
charset?
importRule*
namespace*
(ruleset | media | page | font_face | keyframes)+;
charset:
'@charset' STRING ';';
namespace:
'@namespace' IDENT? (STRING|url) ';';
importRule:
'@import' (STRING|url) (medias)? ';';
medias:
IDENT (',' IDENT)*;
keyframes:
'@keyframes' IDENT '{' keyframes_blocks* '}';
keyframes_blocks:
keyframes_selectors block;
keyframes_selectors:
'from' | 'to' | PERCENTAGE (',' 'from' | 'to' | PERCENTAGE)*;
media:
'@media' medias '{' ruleset* '}';
page:
'@page' IDENT? (':' IDENT)? block;
font_face:
'@font-face' block;
ruleset:
selectors block;
selectors:
selector (',' selector)*;
selector:
simple_selector (selectop? simple_selector)*;
simple_selector:
(elem | '*') (attrib | pseudo)?;
block:
'{' properties* ';'? '}';
properties:
declaration (';' declaration)*;
elem:
IDENT
| '#' IDENT
| '.' IDENT;
pseudo:
(':' | '::') IDENT
| (':' | '::') function;
attrib:
'[' IDENT (attribRelate (STRING | IDENT))? ']';
declaration:
IDENT ':' args '!important'?;
args:
expr (','? expr)*;
expr:
('-' | '+')? (NUM | PERCENTAGE | LENGTH | EMS | EXS | ANGLE | TIME |
FREQ)
| IDENT
//| COLOR
| STRING
| URI
| function;
function:
IDENT '(' args ')';
// TODO: autoriser url(http://...)
url:
'url(' STRING ')';
attribRelate:
'='
| '~='
| '|=';
selectop:
'>'
| '+';
URI:
'url(' STRING ')'
| 'url(' ('a'..'~')* ')';
PERCENTAGE:
NUM '%';
EMS:
NUM 'em';
EXS:
NUM 'ex';
LENGTH:
NUM ('px' | 'cm' | 'mm' | 'in' | 'pt' | 'pc');
ANGLE:
NUM ('deg' | 'rad' | 'grad');
TIME:
NUM ('ms' | 's');
FREQ:
NUM ('khz' | 'hz');
IDENT:
('_' | 'a'..'z' | 'A'..'Z') ('_' | '-' | 'a'..'z' | 'A'..'Z' |
'0'..'9')*
| '-' ('_' | 'a'..'z' | 'A'..'Z') ('_' | '-' | 'a'..'z' | 'A'..'Z' |
'0'..'9')*;
NUM:
(('0'..'9')* '.')? ('0'..'9')+;
COLOR:
'#' ('0'..'9' | 'a'..'f' | 'A'..'F')+;
STRING :
'"' ( '\\' ('b'|'t'|'n'|'f'|'r'|'"'|'\''|'\\') |
~('\\'|'"') )* '"' |
'\'' ( '\\' ('b'|'t'|'n'|'f'|'r'|'"'|'\''|'\\') |
~('\\'|'\'') )* '\''
;
// Single-line comments
SL_COMMENT
: '//'
(~('\n'|'\r'))* ('\n'|'\r'('\n')?)
{$channel=HIDDEN;}
;
// multiple-line comments
COMMENT
: '/*' .* '*/' { $channel = HIDDEN; }
;
// Whitespace -- ignored
WS : ( ' ' | '\t' | '\r' | '\n' | '\f' )+ { $channel = HIDDEN; }
;
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