Examples with ArrayAccessNode org.checkerframework.dataflow.cfg.node.ArrayAccessNode used on opensource projects

Example 6 with ArrayAccessNode

use of org.checkerframework.dataflow.cfg.node.ArrayAccessNode in project checker-framework by typetools.

the class CFAbstractTransfer method getValueFromFactory.

/**
 * Returns the abstract value of a non-leaf tree {@code tree}, as computed by the {@link
 * AnnotatedTypeFactory}.
 *
 * @return the abstract value of a non-leaf tree {@code tree}, as computed by the {@link
 *     AnnotatedTypeFactory}
 */
protected V getValueFromFactory(Tree tree, Node node) {
    GenericAnnotatedTypeFactory<V, S, T, ? extends CFAbstractAnalysis<V, S, T>> factory = analysis.atypeFactory;
    Tree preTree = analysis.getCurrentTree();
    analysis.setCurrentTree(tree);
    AnnotatedTypeMirror at;
    if (node instanceof MethodInvocationNode && ((MethodInvocationNode) node).getIterableExpression() != null) {
        ExpressionTree iter = ((MethodInvocationNode) node).getIterableExpression();
        at = factory.getIterableElementType(iter);
    } else if (node instanceof ArrayAccessNode && ((ArrayAccessNode) node).getArrayExpression() != null) {
        ExpressionTree array = ((ArrayAccessNode) node).getArrayExpression();
        at = factory.getIterableElementType(array);
    } else {
        at = factory.getAnnotatedType(tree);
    }
    analysis.setCurrentTree(preTree);
    return analysis.createAbstractValue(at);
}

Example 7 with ArrayAccessNode

use of org.checkerframework.dataflow.cfg.node.ArrayAccessNode in project checker-framework by typetools.

the class JavaExpression method fromNode.

/**
 * We ignore operations such as widening and narrowing when computing the internal representation.
 *
 * @param receiverNode a node to convert to a JavaExpression
 * @return the internal representation of the given node. Might contain {@link Unknown}.
 */
public static JavaExpression fromNode(Node receiverNode) {
    JavaExpression result = null;
    if (receiverNode instanceof FieldAccessNode) {
        result = fromNodeFieldAccess((FieldAccessNode) receiverNode);
    } else if (receiverNode instanceof ExplicitThisNode) {
        result = new ThisReference(receiverNode.getType());
    } else if (receiverNode instanceof ThisNode) {
        result = new ThisReference(receiverNode.getType());
    } else if (receiverNode instanceof SuperNode) {
        result = new ThisReference(receiverNode.getType());
    } else if (receiverNode instanceof LocalVariableNode) {
        LocalVariableNode lv = (LocalVariableNode) receiverNode;
        result = new LocalVariable(lv);
    } else if (receiverNode instanceof ArrayAccessNode) {
        ArrayAccessNode a = (ArrayAccessNode) receiverNode;
        result = fromArrayAccess(a);
    } else if (receiverNode instanceof StringConversionNode) {
        // ignore string conversion
        return fromNode(((StringConversionNode) receiverNode).getOperand());
    } else if (receiverNode instanceof WideningConversionNode) {
        // ignore widening
        return fromNode(((WideningConversionNode) receiverNode).getOperand());
    } else if (receiverNode instanceof NarrowingConversionNode) {
        // ignore narrowing
        return fromNode(((NarrowingConversionNode) receiverNode).getOperand());
    } else if (receiverNode instanceof UnaryOperationNode) {
        UnaryOperationNode uopn = (UnaryOperationNode) receiverNode;
        return new UnaryOperation(uopn, fromNode(uopn.getOperand()));
    } else if (receiverNode instanceof BinaryOperationNode) {
        BinaryOperationNode bopn = (BinaryOperationNode) receiverNode;
        return new BinaryOperation(bopn, fromNode(bopn.getLeftOperand()), fromNode(bopn.getRightOperand()));
    } else if (receiverNode instanceof ClassNameNode) {
        ClassNameNode cn = (ClassNameNode) receiverNode;
        result = new ClassName(cn.getType());
    } else if (receiverNode instanceof ValueLiteralNode) {
        ValueLiteralNode vn = (ValueLiteralNode) receiverNode;
        result = new ValueLiteral(vn.getType(), vn);
    } else if (receiverNode instanceof ArrayCreationNode) {
        ArrayCreationNode an = (ArrayCreationNode) receiverNode;
        List<@Nullable JavaExpression> dimensions = CollectionsPlume.mapList(JavaExpression::fromNode, an.getDimensions());
        List<JavaExpression> initializers = CollectionsPlume.mapList(JavaExpression::fromNode, an.getInitializers());
        result = new ArrayCreation(an.getType(), dimensions, initializers);
    } else if (receiverNode instanceof MethodInvocationNode) {
        MethodInvocationNode mn = (MethodInvocationNode) receiverNode;
        MethodInvocationTree t = mn.getTree();
        if (t == null) {
            throw new BugInCF("Unexpected null tree for node: " + mn);
        }
        assert TreeUtils.isUseOfElement(t) : "@AssumeAssertion(nullness): tree kind";
        ExecutableElement invokedMethod = TreeUtils.elementFromUse(t);
        // Note that the method might be nondeterministic.
        List<JavaExpression> parameters = CollectionsPlume.mapList(JavaExpression::fromNode, mn.getArguments());
        JavaExpression methodReceiver;
        if (ElementUtils.isStatic(invokedMethod)) {
            methodReceiver = new ClassName(mn.getTarget().getReceiver().getType());
        } else {
            methodReceiver = fromNode(mn.getTarget().getReceiver());
        }
        result = new MethodCall(mn.getType(), invokedMethod, methodReceiver, parameters);
    }
    if (result == null) {
        result = new Unknown(receiverNode);
    }
    return result;
}