fixes #338

Author: wumpz

README.md

@@ -44,6 +44,7 @@ Also I would like to know about needed examples or documentation stuff.
 
 ## Extensions in the latest SNAPSHOT version 1.2
 
+* support for bitwise not **~**
 * support for **drop view**
 * support for indexed JDBC parameters at multiple places
 * allowed **index** as object name

src/main/java/net/sf/jsqlparser/expression/SignedExpression.java

@@ -24,7 +24,7 @@
 import net.sf.jsqlparser.parser.ASTNodeAccessImpl;
 
 /**
- * It represents a "-" or "+" before an expression
+ * It represents a "-" or "+" or "~" before an expression
  */
 public class SignedExpression extends ASTNodeAccessImpl implements Expression {
 
@@ -42,8 +42,8 @@ public char getSign() {
 
     public final void setSign(char sign) {
         this.sign = sign;
-        if (sign != '+' && sign != '-') {
-            throw new IllegalArgumentException("illegal sign character, only + - allowed");
+        if (sign != '+' && sign != '-' && sign != '~') {
+            throw new IllegalArgumentException("illegal sign character, only + - ~ allowed");
         }
     }
 

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

@@ -2420,7 +2420,7 @@ Expression PrimaryExpression() #PrimaryExpression:
     ColDataType type = null;
 }
 {
-[sign="+" | sign="-"]
+[sign="+" | sign="-" | sign="~"]
 (
     <K_NULL> { retval = new NullValue(); }
 

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

@@ -116,4 +116,19 @@ public void testUpdateWithFunctions() throws JSQLParserException {
     public void testUpdateIssue508LeftShift() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("UPDATE user SET num = 1 << 1 WHERE id = 1");
     }
+    
+    @Test
+    public void testUpdateIssue338() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("UPDATE mytable SET status = (status & ~1)");
+    }
+    
+    @Test
+    public void testUpdateIssue338_1() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("UPDATE mytable SET status = (status & 1)");
+    }
+    
+    @Test
+    public void testUpdateIssue338_2() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("UPDATE mytable SET status = (status + 1)");
+    }
 }