Author: wumpz

README.md

@@ -49,6 +49,7 @@ Also I would like to know about needed examples or documentation stuff.
 
 ## Extensions in the latest SNAPSHOT version 1.2
 
+* support for **<<** and **>>** left and right shift operations
 * breaking **API** change: merge of *within group* and *over* (window expressions)
 * first support for *use* statements
 * first support for *call* statements

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -2358,12 +2358,12 @@ Expression PrimaryExpression():
 
     | retval=CaseWhenExpression()
 
-    | LOOKAHEAD(2) "?" { retval = new JdbcParameter(++jdbcParameterIndex, false); } 
-		[ LOOKAHEAD(2) token = <S_LONG> { ((JdbcParameter)retval).setUseFixedIndex(true); ((JdbcParameter)retval).setIndex(Integer.valueOf(token.image)); } ]
+    | "?" { retval = new JdbcParameter(++jdbcParameterIndex, false); } 
+		[ token = <S_LONG> { ((JdbcParameter)retval).setUseFixedIndex(true); ((JdbcParameter)retval).setIndex(Integer.valueOf(token.image)); } ]
 
     | LOOKAHEAD(2) retval=JdbcNamedParameter()
 
-    | LOOKAHEAD(2) retval=UserVariable()
+    | retval=UserVariable()
 
     | LOOKAHEAD(2) retval=NumericBind()
 
@@ -2394,7 +2394,7 @@ Expression PrimaryExpression():
 
     | LOOKAHEAD("(" SimpleExpression() ")") "(" retval=SimpleExpression() ")" {retval = new Parenthesis(retval); }
 
-    | LOOKAHEAD(3) "(" retval=SubSelect() ")" 
+    | LOOKAHEAD(3) "(" retval=SubSelect() ")"
 
     | token=<S_CHAR_LITERAL> { retval = new StringValue(token.image); }
 
@@ -2699,8 +2699,6 @@ RowConstructor RowConstructor(): {
     ExpressionList list = null;
     RowConstructor rowConstructor = new RowConstructor();
 } {
-    //("(" list =SimpleExpressionListAtLeastTwoItems() ")"
-    //|
     [ <K_ROW> { rowConstructor.setName("ROW");} ]
     "("
         list = SimpleExpressionList()

src/test/java/net/sf/jsqlparser/test/update/UpdateTest.java

@@ -111,4 +111,9 @@ public void testUpdateDoesNotAllowLimitOffset() throws JSQLParserException {
     public void testUpdateWithFunctions() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("UPDATE tablename SET col = SUBSTRING(col2, 1, 2)");
     }
+    
+    @Test
+    public void testUpdateIssue508LeftShift() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("UPDATE user SET num = 1 << 1 WHERE id = 1");
+    }
 }