Examples with CFAbstractValue org.checkerframework.framework.flow.CFAbstractValue used on opensource projects

Example 1 with CFAbstractValue

use of org.checkerframework.framework.flow.CFAbstractValue in project checker-framework by typetools.

the class BaseTypeVisitor method checkPreconditions.

/**
 * Checks that all the given {@code preconditions} hold true immediately prior to the method
 * invocation or variable access at {@code tree}.
 *
 * @param tree the method invocation; immediately prior to it, the preconditions must hold true
 * @param preconditions the preconditions to be checked
 */
protected void checkPreconditions(MethodInvocationTree tree, Set<Precondition> preconditions) {
    // TODO: Remove this check and investigate the root cause.
    if (preconditions.isEmpty()) {
        return;
    }
    StringToJavaExpression stringToJavaExpr = stringExpr -> StringToJavaExpression.atMethodInvocation(stringExpr, tree, checker);
    for (Contract c : preconditions) {
        Precondition p = (Precondition) c;
        String expressionString = p.expressionString;
        AnnotationMirror anno = c.viewpointAdaptDependentTypeAnnotation(atypeFactory, stringToJavaExpr, tree);
        JavaExpression exprJe;
        try {
            exprJe = StringToJavaExpression.atMethodInvocation(expressionString, tree, checker);
        } catch (JavaExpressionParseException e) {
            // report errors here
            checker.report(tree, e.getDiagMessage());
            return;
        }
        CFAbstractStore<?, ?> store = atypeFactory.getStoreBefore(tree);
        CFAbstractValue<?> value = null;
        if (CFAbstractStore.canInsertJavaExpression(exprJe)) {
            value = store.getValue(exprJe);
        }
        AnnotationMirror inferredAnno = null;
        if (value != null) {
            QualifierHierarchy hierarchy = atypeFactory.getQualifierHierarchy();
            Set<AnnotationMirror> annos = value.getAnnotations();
            inferredAnno = hierarchy.findAnnotationInSameHierarchy(annos, anno);
        }
        if (!checkContract(exprJe, anno, inferredAnno, store)) {
            if (exprJe != null) {
                expressionString = exprJe.toString();
            }
            checker.reportError(tree, "contracts.precondition", tree.getMethodSelect().toString(), contractExpressionAndType(expressionString, inferredAnno), contractExpressionAndType(expressionString, anno));
        }
    }
}