allow empty function declarations (as in filter definition having only optional parameters)

ylafon · ylafon · commit e1261e358d28 · 2024-04-09T14:56:32.000+09:00
diff --git a/org/w3c/css/parser/analyzer/CssParser.jj b/org/w3c/css/parser/analyzer/CssParser.jj
@@ -3680,11 +3680,11 @@ CssCheckableValue functionvar() :
  */
 CssValue function() :
 {Token n,p = null,q = null;
- CssExpression exp;
+ CssExpression exp = new CssExpression();
  CssColor color = new CssColor();
 }
 {
-    n=<FUNCTION> ( <S> )*  ( LOOKAHEAD(2) exp=expr()
+    n=<FUNCTION> ( <S> )*  ( LOOKAHEAD(2) ( exp=expr() )?
     ")" { 
 	String funcname = n.image.toLowerCase();
 	if (funcname.equals("rgb(")) {

Original file line number	Diff line number	Diff line change
`@@ -3680,11 +3680,11 @@ CssCheckableValue functionvar() :`
`3680`	`3680`	`*/`
`3681`	`3681`	`CssValue function() :`
`3682`	`3682`	`{Token n,p = null,q = null;`
`3683`		`- CssExpression exp;`
	`3683`	`+ CssExpression exp = new CssExpression();`
`3684`	`3684`	`CssColor color = new CssColor();`
`3685`	`3685`	`}`
`3686`	`3686`	`{`
`3687`		`- n=<FUNCTION> ( <S> )* ( LOOKAHEAD(2) exp=expr()`
	`3687`	`+ n=<FUNCTION> ( <S> )* ( LOOKAHEAD(2) ( exp=expr() )?`
`3688`	`3688`	`")" {`
`3689`	`3689`	`String funcname = n.image.toLowerCase();`
`3690`	`3690`	`if (funcname.equals("rgb(")) {`