/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package jvm;
/**
* Test different null pointer checks.
*
* @author Martin Schoeberl (martin@jopdesign.com)
*
*/
public class NullPointer extends TestCase {
public String toString() {
return "NullPointer";
}
int ival;
long lval;
NullPointer rval;
/**
* an invokevirtual
*/
public void foo() {
}
/**
* an invokespecial
*/
private void bar() {
}
public boolean test() {
boolean ok = true;
int i;
long l;
NullPointer r;
NullPointer nullObj = null;
boolean caught;
caught = false;
try {
nullObj.ival = 123;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
i = nullObj.ival;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
nullObj.lval = 1L;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
l = nullObj.lval;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
nullObj.rval = this;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
r = nullObj.rval;
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
caught = false;
try {
nullObj.foo();
} catch (NullPointerException e) {
caught = true;
}
ok &= caught;
// TODO: null pointer check in invokespecial is missing
// caught = false;
// try {
// nullObj.bar();
// } catch (NullPointerException e) {
// caught = true;
// }
// ok &= caught;
return ok;
}
}