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

Example 1 with ASTThrowStatement

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

the class JUnitUseExpectedRule method visit.

@Override
public Object visit(ASTMethodDeclaration node, Object data) {
    List<ASTTryStatement> catches = node.findDescendantsOfType(ASTTryStatement.class);
    List<Node> found = new ArrayList<>();
    if (catches.isEmpty()) {
        return found;
    }
    for (ASTTryStatement trySt : catches) {
        ASTCatchStatement cStatement = getCatch(trySt);
        if (cStatement != null) {
            ASTBlock block = (ASTBlock) cStatement.jjtGetChild(1);
            if (block.jjtGetNumChildren() != 0) {
                continue;
            }
            List<ASTBlockStatement> blocks = trySt.jjtGetChild(0).findDescendantsOfType(ASTBlockStatement.class);
            if (blocks.isEmpty()) {
                continue;
            }
            ASTBlockStatement st = blocks.get(blocks.size() - 1);
            ASTName name = st.getFirstDescendantOfType(ASTName.class);
            if (name != null && st.equals(name.getNthParent(5)) && "fail".equals(name.getImage())) {
                found.add(name);
                continue;
            }
            ASTThrowStatement th = st.getFirstDescendantOfType(ASTThrowStatement.class);
            if (th != null && st.equals(th.getNthParent(2))) {
                found.add(th);
                continue;
            }
        }
    }
    return found;
}

Example 2 with ASTThrowStatement

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

the class PreserveStackTraceRule method visit.

@Override
public Object visit(ASTCatchStatement catchStmt, Object data) {
    String target = catchStmt.jjtGetChild(0).findChildrenOfType(ASTVariableDeclaratorId.class).get(0).getImage();
    // Inspect all the throw stmt inside the catch stmt
    List<ASTThrowStatement> lstThrowStatements = catchStmt.findDescendantsOfType(ASTThrowStatement.class);
    for (ASTThrowStatement throwStatement : lstThrowStatements) {
        Node n = throwStatement.jjtGetChild(0).jjtGetChild(0);
        if (n instanceof ASTCastExpression) {
            ASTPrimaryExpression expr = (ASTPrimaryExpression) n.jjtGetChild(1);
            if (expr.jjtGetNumChildren() > 1 && expr.jjtGetChild(1) instanceof ASTPrimaryPrefix) {
                RuleContext ctx = (RuleContext) data;
                addViolation(ctx, throwStatement);
            }
            continue;
        }
        // Retrieve all argument for the throw exception (to see if the
        // original exception is preserved)
        ASTArgumentList args = throwStatement.getFirstDescendantOfType(ASTArgumentList.class);
        if (args != null) {
            Node parent = args.jjtGetParent().jjtGetParent();
            if (parent instanceof ASTAllocationExpression) {
                // maybe it is used inside a anonymous class
                ck(data, target, throwStatement, parent);
            } else {
                // Check all arguments used in the throw statement
                ck(data, target, throwStatement, throwStatement);
            }
        } else {
            Node child = throwStatement.jjtGetChild(0);
            while (child != null && child.jjtGetNumChildren() > 0 && !(child instanceof ASTName)) {
                child = child.jjtGetChild(0);
            }
            if (child != null) {
                if (child instanceof ASTName && !target.equals(child.getImage()) && !child.hasImageEqualTo(target + FILL_IN_STACKTRACE)) {
                    Map<VariableNameDeclaration, List<NameOccurrence>> vars = ((ASTName) child).getScope().getDeclarations(VariableNameDeclaration.class);
                    for (Map.Entry<VariableNameDeclaration, List<NameOccurrence>> entry : vars.entrySet()) {
                        VariableNameDeclaration decl = entry.getKey();
                        List<NameOccurrence> occurrences = entry.getValue();
                        if (decl.getImage().equals(child.getImage())) {
                            if (!isInitCauseCalled(target, occurrences)) {
                                // Check how the variable is initialized
                                ASTVariableInitializer initializer = decl.getNode().jjtGetParent().getFirstDescendantOfType(ASTVariableInitializer.class);
                                if (initializer != null) {
                                    args = initializer.getFirstDescendantOfType(ASTArgumentList.class);
                                    if (args != null) {
                                        // constructor with args?
                                        ck(data, target, throwStatement, args);
                                    } else if (!isFillInStackTraceCalled(target, initializer)) {
                                        addViolation(data, throwStatement);
                                    }
                                }
                            }
                        }
                    }
                } else if (child instanceof ASTClassOrInterfaceType) {
                    addViolation(data, throwStatement);
                }
            }
        }
    }
    return super.visit(catchStmt, data);
}