regexp_like transfered into a general boolean function

Author: wumpz

src/main/javacc/net/sf/jsqlparser/parser/JSqlParserCC.jj

@@ -193,8 +193,6 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_INTO:"INTO">
 |   <K_NULL:"NULL">
 |   <K_LIKE:"LIKE">
-|   <K_REGEXP:"REGEXP">
-|   <K_REGEXP_LIKE:"REGEXP_LIKE">
 |   <K_DROP:"DROP">
 |   <K_JOIN:"JOIN">
 |   <K_LEFT:"LEFT">
@@ -1285,27 +1283,13 @@ Expression Condition():
 }
 {
 	(LOOKAHEAD(SQLCondition()) result=SQLCondition()
-	| result=FunctionCondition()
-	| result=RegularCondition()
+	| LOOKAHEAD(RegularCondition()) result=RegularCondition()
+	| result=Function()
 	)
 
 	{ return result; }
 }
 
-Expression FunctionCondition():
-{
-	Function result;
-	ExpressionList parameters;
-}
-{
-    <K_REGEXP_LIKE> { result = new Function(); result.setName("REGEXP_LIKE"); }
-    "("
-    parameters=SimpleExpressionList() { result.setParameters(parameters); }
-    ")"
-
-	{ return result; }
-}
-
 Expression RegularCondition():
 {
 	Expression result = null;

src/test/java/net/sf/jsqlparser/test/select/SelectTest.java

@@ -1051,5 +1051,10 @@ public void testRegexpLike2() throws JSQLParserException {
         String stmt = "SELECT CASE WHEN REGEXP_LIKE(first_name, '^Ste(v|ph)en$') THEN 1 ELSE 2 END FROM mytable";
         assertSqlCanBeParsedAndDeparsed(stmt);
     }
+	
+	public void testBooleanFunction1() throws JSQLParserException {
+        String stmt = "SELECT * FROM mytable WHERE test_func(col1)";
+        assertSqlCanBeParsedAndDeparsed(stmt);
+    }
 
 }