Examples with BinaryExpressionTree org.sonar.plugins.java.api.tree.BinaryExpressionTree used on opensource projects

Example 6 with BinaryExpressionTree

use of org.sonar.plugins.java.api.tree.BinaryExpressionTree in project sonar-java by SonarSource.

the class JavaTreeModelTest method additive_expression.

/**
 * 15.18. Additive Operators
 */
@Test
public void additive_expression() {
    String code = "class T { int m() { return 1 + 2 - 3; } }";
    BinaryExpressionTree tree = (BinaryExpressionTree) expressionOfReturnStatement(code);
    assertThat(tree.is(Kind.MINUS)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("-");
    assertThat(tree.rightOperand()).isNotNull();
    assertThat(tree.rightOperand().is(Kind.INT_LITERAL)).isTrue();
    assertThatChildrenIteratorHasSize(tree, 3);
    tree = (BinaryExpressionTree) tree.leftOperand();
    assertThat(tree.is(Kind.PLUS)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("+");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
}

Example 7 with BinaryExpressionTree

use of org.sonar.plugins.java.api.tree.BinaryExpressionTree in project sonar-java by SonarSource.

the class JavaTreeModelTest method shift_expression.

/**
 * 15.19. Shift Operators
 */
@Test
public void shift_expression() {
    String code = "class T { int m() { return 1 >> 2 << 3 >>> 4; } }";
    BinaryExpressionTree tree = (BinaryExpressionTree) (BinaryExpressionTree) expressionOfReturnStatement(code);
    assertThat(tree.is(Tree.Kind.UNSIGNED_RIGHT_SHIFT)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo(">>>");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
    tree = (BinaryExpressionTree) tree.leftOperand();
    assertThat(tree.is(Tree.Kind.LEFT_SHIFT)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("<<");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
    tree = (BinaryExpressionTree) tree.leftOperand();
    assertThat(tree.is(Kind.RIGHT_SHIFT)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo(">>");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
}

Example 8 with BinaryExpressionTree

use of org.sonar.plugins.java.api.tree.BinaryExpressionTree in project sonar-java by SonarSource.

the class JavaTreeModelTest method conditional_and_expression.

/**
 * 15.23. Conditional-And Operator &&
 */
@Test
public void conditional_and_expression() {
    String code = "class T { boolean m() { return false && false && true; } }";
    BinaryExpressionTree tree = (BinaryExpressionTree) expressionOfReturnStatement(code);
    assertThat(tree.is(Tree.Kind.CONDITIONAL_AND)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("&&");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
    tree = (BinaryExpressionTree) tree.leftOperand();
    assertThat(tree.is(Tree.Kind.CONDITIONAL_AND)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("&&");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
}

Example 9 with BinaryExpressionTree

use of org.sonar.plugins.java.api.tree.BinaryExpressionTree in project sonar-java by SonarSource.

the class JavaTreeModelTest method conditional_or_expression.

/**
 * 15.24. Conditional-Or Operator ||
 */
@Test
public void conditional_or_expression() {
    String code = "class T { boolean m() { return false || false || true; } }";
    BinaryExpressionTree tree = (BinaryExpressionTree) expressionOfReturnStatement(code);
    assertThat(tree.is(Tree.Kind.CONDITIONAL_OR)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("||");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
    tree = (BinaryExpressionTree) tree.leftOperand();
    assertThat(tree.is(Tree.Kind.CONDITIONAL_OR)).isTrue();
    assertThat(tree.leftOperand()).isNotNull();
    assertThat(tree.operatorToken().text()).isEqualTo("||");
    assertThat(tree.rightOperand()).isNotNull();
    assertThatChildrenIteratorHasSize(tree, 3);
}

Example 10 with BinaryExpressionTree

use of org.sonar.plugins.java.api.tree.BinaryExpressionTree in project sonar-java by SonarSource.

the class NullDereferenceInConditionalCheck method visitBinaryExpression.

@Override
public void visitBinaryExpression(BinaryExpressionTree tree) {
    if (isAndWithNullComparison(tree) || isOrWithNullExclusion(tree)) {
        ExpressionTree nonNullOperand = getNonNullOperand(tree.leftOperand());
        IdentifierTree identifierTree = getIdentifier(nonNullOperand);
        if (identifierTree != null) {
            IdentifierVisitor visitor = new IdentifierVisitor(identifierTree);
            tree.rightOperand().accept(visitor);
            if (visitor.raiseIssue) {
                context.reportIssue(this, tree, "Either reverse the equality operator in the \"" + identifierTree.name() + "\" null test, or reverse the logical operator that follows it.");
            }
        }
    }
    super.visitBinaryExpression(tree);
}