fixed parsing front slash

pmd-plsql/etc/grammar/PldocAST.jjt

@@ -3191,7 +3191,7 @@ ASTMultiplicativeExpression MultiplicativeExpression() #MultiplicativeExpression
   //UnaryExpression() ( ( "*" | "/" | <MOD> ) UnaryExpression() )*
  (
   (simpleNode = UnaryExpression(true) ) { sb.append(simpleNode.getImage()); }
-  ( LOOKAHEAD(2)
+  ( LOOKAHEAD("**" | "*" | "/" | <MOD> , {getToken(1).specialToken == null || getToken(1).specialToken.kind != EOL})
     ( ("**"  ) { sb.append(" ** "); } //Exponentiation
     | ("*"  ) { sb.append(" * "); }
     | ("/"  ) { sb.append(" / "); }

pmd-plsql/src/test/java/net/sourceforge/pmd/lang/plsql/ast/SlashAsDivisionTest.java

@@ -0,0 +1,18 @@
+/**
+ * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
+ */
+
+package net.sourceforge.pmd.lang.plsql.ast;
+
+import org.junit.Test;
+
+import net.sourceforge.pmd.lang.plsql.AbstractPLSQLParserTst;
+
+public class SlashAsDivisionTest extends AbstractPLSQLParserTst {
+
+    @Test
+    public void parseSlashAsDivision() {
+        plsql.parseResource("SlashAsDivision.sql");
+    }
+
+}

pmd-plsql/src/test/resources/net/sourceforge/pmd/lang/plsql/ast/SlashAsDivision.sql

@@ -0,0 +1,7 @@
+update name
+set street = 'Main Street'
+/
+
+update name
+set n01 = 2/2
+/