Examples with JavaExpression org.checkerframework.dataflow.expression.JavaExpression used on opensource projects

Example 86 with JavaExpression

use of org.checkerframework.dataflow.expression.JavaExpression in project checker-framework by typetools.

the class ValueTransfer method processConditionalPostconditions.

@Override
protected void processConditionalPostconditions(MethodInvocationNode n, ExecutableElement methodElement, Tree tree, CFStore thenStore, CFStore elseStore) {
    // For String.startsWith(String) and String.endsWith(String), refine the minimum length
    // of the receiver to the minimum length of the argument.
    ValueMethodIdentifier methodIdentifier = atypeFactory.getMethodIdentifier();
    if (methodIdentifier.isStartsWithMethod(methodElement) || methodIdentifier.isEndsWithMethod(methodElement)) {
        Node argumentNode = n.getArgument(0);
        AnnotationMirror argumentAnno = getArrayOrStringAnnotation(argumentNode);
        int minLength = atypeFactory.getMinLenValue(argumentAnno);
        // Update the annotation of the receiver
        if (minLength != 0) {
            JavaExpression receiver = JavaExpression.fromNode(n.getTarget().getReceiver());
            AnnotationMirror minLenAnno = atypeFactory.createArrayLenRangeAnnotation(minLength, Integer.MAX_VALUE);
            thenStore.insertValuePermitNondeterministic(receiver, minLenAnno);
        }
    }
    super.processConditionalPostconditions(n, methodElement, tree, thenStore, elseStore);
}

Example 87 with JavaExpression

use of org.checkerframework.dataflow.expression.JavaExpression in project checker-framework by typetools.

the class CFAbstractTransfer method processPostconditionsAndConditionalPostconditions.

/**
 * Add information from the postconditions and conditional postconditions of a method to the
 * stores after an invocation.
 *
 * @param invocationNode a method call
 * @param invocationTree the tree for the method call
 * @param thenStore the "then" store; is side-effected by this method
 * @param elseStore the "else" store; is side-effected by this method
 * @param postconditions the postconditions
 */
private void processPostconditionsAndConditionalPostconditions(MethodInvocationNode invocationNode, Tree invocationTree, S thenStore, S elseStore, Set<? extends Contract> postconditions) {
    StringToJavaExpression stringToJavaExpr = stringExpr -> StringToJavaExpression.atMethodInvocation(stringExpr, invocationNode, analysis.checker);
    for (Contract p : postconditions) {
        // Viewpoint-adapt to the method use (the call site).
        AnnotationMirror anno = p.viewpointAdaptDependentTypeAnnotation(analysis.atypeFactory, stringToJavaExpr, /*errorTree=*/
        null);
        String expressionString = p.expressionString;
        try {
            JavaExpression je = stringToJavaExpr.toJavaExpression(expressionString);
            // are removed from the store before this method is called.
            if (p.kind == Contract.Kind.CONDITIONALPOSTCONDITION) {
                if (((ConditionalPostcondition) p).resultValue) {
                    thenStore.insertOrRefinePermitNondeterministic(je, anno);
                } else {
                    elseStore.insertOrRefinePermitNondeterministic(je, anno);
                }
            } else {
                thenStore.insertOrRefinePermitNondeterministic(je, anno);
            }
        } catch (JavaExpressionParseException e) {
            // report errors here
            if (e.isFlowParseError()) {
                Object[] args = new Object[e.args.length + 1];
                args[0] = ElementUtils.getSimpleSignature(TreeUtils.elementFromUse(invocationNode.getTree()));
                System.arraycopy(e.args, 0, args, 1, e.args.length);
                analysis.checker.reportError(invocationTree, "flowexpr.parse.error.postcondition", args);
            } else {
                analysis.checker.report(invocationTree, e.getDiagMessage());
            }
        }
    }
}