Examples with SymbolicValue org.sonar.java.se.symbolicvalues.SymbolicValue used on opensource projects

Example 56 with SymbolicValue

use of org.sonar.java.se.symbolicvalues.SymbolicValue in project sonar-java by SonarSource.

the class BytecodeEGWalkerExecuteTest method test_putfield.

@Test
public void test_putfield() throws Exception {
    SymbolicValue objectRef = new SymbolicValue();
    SymbolicValue value = new SymbolicValue();
    ProgramState programState = execute(new Instruction(Opcodes.PUTFIELD), ProgramState.EMPTY_STATE.stackValue(objectRef).stackValue(value));
    assertThat(programState.peekValue()).isNull();
    assertThatThrownBy(() -> execute(new Instruction(Opcodes.PUTFIELD), ProgramState.EMPTY_STATE.stackValue(value))).hasMessage("PUTFIELD needs 2 values on stack");
}

Example 57 with SymbolicValue

use of org.sonar.java.se.symbolicvalues.SymbolicValue in project sonar-java by SonarSource.

the class BytecodeEGWalkerExecuteTest method test_iinc.

@Test
public void test_iinc() throws Exception {
    SymbolicValue sv = new SymbolicValue();
    ProgramState programState = ProgramState.EMPTY_STATE.put(2, sv);
    programState = execute(new Instruction(Opcodes.IINC, 2), programState);
    SymbolicValue result = programState.getValue(2);
    assertThat(result).isNotEqualTo(sv);
    assertThat(programState.getConstraint(result, ObjectConstraint.class)).isEqualTo(ObjectConstraint.NOT_NULL);
    assertEmptyStack(programState);
    assertThatThrownBy(() -> execute(new Instruction(Opcodes.IINC, 1), ProgramState.EMPTY_STATE)).hasMessage("Local variable 1 not found");
}

Example 58 with SymbolicValue

use of org.sonar.java.se.symbolicvalues.SymbolicValue in project sonar-java by SonarSource.

the class BytecodeSECheckTest method zeroness_check_mul.

@Test
public void zeroness_check_mul() {
    int[] opCodes = { Opcodes.DMUL, Opcodes.FMUL, Opcodes.IMUL, Opcodes.LMUL };
    for (int mulOpCode : opCodes) {
        Instruction instruction = new Instruction(mulOpCode);
        ProgramState ps = execute(instruction, zeroZeroPs);
        SymbolicValue peekValue = ps.peekValue();
        assertThat(peekValue).isEqualTo(sv2);
        ConstraintsByDomain constraints = ps.getConstraints(peekValue);
        assertThat(constraints.get(ZeroConstraint.class)).isEqualTo(ZeroConstraint.ZERO);
        assertThat(constraints.get(BooleanConstraint.class)).isEqualTo(BooleanConstraint.FALSE);
        ps = execute(instruction, zeroNonZeroPs);
        peekValue = ps.peekValue();
        assertThat(peekValue).isEqualTo(sv1);
        constraints = ps.getConstraints(peekValue);
        assertThat(constraints.get(ZeroConstraint.class)).isEqualTo(ZeroConstraint.ZERO);
        assertThat(constraints.get(BooleanConstraint.class)).isEqualTo(BooleanConstraint.FALSE);
        ps = execute(instruction, nonZeroZeroPs);
        peekValue = ps.peekValue();
        assertThat(peekValue).isEqualTo(sv2);
        constraints = ps.getConstraints(peekValue);
        assertThat(constraints.get(ZeroConstraint.class)).isEqualTo(ZeroConstraint.ZERO);
        assertThat(constraints.get(BooleanConstraint.class)).isEqualTo(BooleanConstraint.FALSE);
        ps = execute(instruction, nonZeroNonZeroPs);
        peekValue = ps.peekValue();
        assertThat(peekValue).isNotIn(sv1, sv2);
        constraints = ps.getConstraints(peekValue);
        assertThat(constraints.get(ZeroConstraint.class)).isEqualTo(ZeroConstraint.NON_ZERO);
        assertThat(constraints.get(BooleanConstraint.class)).isNull();
        ps = execute(instruction, noConstraints);
        peekValue = ps.peekValue();
        assertThat(peekValue).isNotIn(sv1, sv2);
        constraints = ps.getConstraints(peekValue);
        assertThat(constraints.get(ZeroConstraint.class)).isNull();
        assertThat(constraints.get(BooleanConstraint.class)).isNull();
    }
}

Example 59 with SymbolicValue

use of org.sonar.java.se.symbolicvalues.SymbolicValue in project sonar-java by SonarSource.

the class BytecodeSECheckTest method setUp.

@Before
public void setUp() {
    sv1 = new SymbolicValue();
    sv2 = new SymbolicValue();
    zeroZeroPs = ProgramState.EMPTY_STATE;
    zeroZeroPs = zeroZeroPs.stackValue(sv1).addConstraints(sv1, ConstraintsByDomain.empty().put(ZeroConstraint.ZERO).put(BooleanConstraint.FALSE));
    zeroZeroPs = zeroZeroPs.stackValue(sv2).addConstraints(sv2, ConstraintsByDomain.empty().put(ZeroConstraint.ZERO).put(BooleanConstraint.FALSE));
    zeroNonZeroPs = ProgramState.EMPTY_STATE;
    zeroNonZeroPs = zeroNonZeroPs.stackValue(sv1).addConstraints(sv1, ConstraintsByDomain.empty().put(ZeroConstraint.ZERO).put(BooleanConstraint.FALSE));
    zeroNonZeroPs = zeroNonZeroPs.stackValue(sv2).addConstraints(sv2, ConstraintsByDomain.empty().put(ZeroConstraint.NON_ZERO).put(BooleanConstraint.TRUE));
    nonZeroZeroPs = ProgramState.EMPTY_STATE;
    nonZeroZeroPs = nonZeroZeroPs.stackValue(sv1).addConstraints(sv1, ConstraintsByDomain.empty().put(ZeroConstraint.NON_ZERO).put(BooleanConstraint.TRUE));
    nonZeroZeroPs = nonZeroZeroPs.stackValue(sv2).addConstraints(sv2, ConstraintsByDomain.empty().put(ZeroConstraint.ZERO).put(BooleanConstraint.FALSE));
    nonZeroNonZeroPs = ProgramState.EMPTY_STATE;
    nonZeroNonZeroPs = nonZeroNonZeroPs.stackValue(sv1).addConstraints(sv1, ConstraintsByDomain.empty().put(ZeroConstraint.NON_ZERO));
    nonZeroNonZeroPs = nonZeroNonZeroPs.stackValue(sv2).addConstraints(sv2, ConstraintsByDomain.empty().put(ZeroConstraint.NON_ZERO));
    noConstraints = ProgramState.EMPTY_STATE.stackValue(sv1).stackValue(sv2);
}

Example 60 with SymbolicValue

use of org.sonar.java.se.symbolicvalues.SymbolicValue in project sonar-java by SonarSource.

the class BytecodeEGWalkerExecuteTest method test_dup_x2.

@Test
public void test_dup_x2() throws Exception {
    SymbolicValue sv1 = new SymbolicValue();
    SymbolicValue sv2 = new SymbolicValue();
    SymbolicValue sv3 = new SymbolicValue();
    ProgramState programState = execute(new Instruction(Opcodes.DUP_X2), ProgramState.EMPTY_STATE.stackValue(sv3).stackValue(sv2).stackValue(sv1));
    ProgramState.Pop pop = programState.unstackValue(4);
    assertThat(pop.values).containsExactly(sv1, sv2, sv3, sv1);
    assertThat(pop.state).isEqualTo(ProgramState.EMPTY_STATE);
    assertThatThrownBy(() -> execute(new Instruction(Opcodes.DUP_X2), ProgramState.EMPTY_STATE.stackValue(sv1).stackValue(sv2))).hasMessage("DUP_X2 needs 3 values on stack");
}