Examples with ASTPreDecrementExpression net.sourceforge.pmd.lang.java.ast.ASTPreDecrementExpression used on opensource projects

Example 1 with ASTPreDecrementExpression

use of net.sourceforge.pmd.lang.java.ast.ASTPreDecrementExpression in project pmd by pmd.

the class JavaNameOccurrence method isSelfAssignment.

/**
 * Assert it the occurrence is a self assignment such as:
 * <code>i += 3;</code>
 *
 * @return true, if the occurrence is self-assignment, false, otherwise.
 */
@SuppressWarnings("PMD.AvoidBranchingStatementAsLastInLoop")
public boolean isSelfAssignment() {
    Node l = location;
    while (true) {
        Node p = l.jjtGetParent();
        Node gp = p.jjtGetParent();
        Node node = gp.jjtGetParent();
        if (node instanceof ASTPreDecrementExpression || node instanceof ASTPreIncrementExpression || node instanceof ASTPostfixExpression) {
            return true;
        }
        if (hasAssignmentOperator(gp)) {
            return isCompoundAssignment(gp);
        }
        if (hasAssignmentOperator(node)) {
            return isCompoundAssignment(node);
        }
        // deal with extra parenthesis: "(i)++"
        if (p instanceof ASTPrimaryPrefix && p.jjtGetNumChildren() == 1 && gp instanceof ASTPrimaryExpression && gp.jjtGetNumChildren() == 1 && node instanceof ASTExpression && node.jjtGetNumChildren() == 1 && node.jjtGetParent() instanceof ASTPrimaryPrefix && node.jjtGetParent().jjtGetNumChildren() == 1) {
            l = node;
            continue;
        }
        // catch this.i++ or ++this.i
        return gp instanceof ASTPreDecrementExpression || gp instanceof ASTPreIncrementExpression || gp instanceof ASTPostfixExpression;
    }
}