Examples with PreconditionAnnotation org.checkerframework.framework.qual.PreconditionAnnotation used on opensource projects

Example 1 with PreconditionAnnotation

use of org.checkerframework.framework.qual.PreconditionAnnotation in project checker-framework by typetools.

the class ContractsUtils method getPreconditions.

/**
 * Returns the set of preconditions on the element {@code element}.
 */
public Set<Precondition> getPreconditions(Element element) {
    Set<Precondition> result = new LinkedHashSet<>();
    // Check for a single contract.
    AnnotationMirror requiresAnnotation = factory.getDeclAnnotation(element, RequiresQualifier.class);
    result.addAll(getPrecondition(requiresAnnotation));
    // Check for multiple contracts.
    AnnotationMirror requiresAnnotations = factory.getDeclAnnotation(element, RequiresQualifiers.class);
    if (requiresAnnotations != null) {
        List<AnnotationMirror> annotations = AnnotationUtils.getElementValueArray(requiresAnnotations, "value", AnnotationMirror.class, false);
        for (AnnotationMirror a : annotations) {
            result.addAll(getPrecondition(a));
        }
    }
    // Check type-system specific annotations.
    Class<PreconditionAnnotation> metaAnnotation = PreconditionAnnotation.class;
    List<Pair<AnnotationMirror, AnnotationMirror>> declAnnotations = factory.getDeclAnnotationWithMetaAnnotation(element, metaAnnotation);
    for (Pair<AnnotationMirror, AnnotationMirror> r : declAnnotations) {
        AnnotationMirror anno = r.first;
        AnnotationMirror metaAnno = r.second;
        List<String> expressions = AnnotationUtils.getElementValueArray(anno, "value", String.class, false);
        AnnotationMirror precondtionAnno = getAnnotationMirrorOfMetaAnnotation(metaAnno, anno);
        if (precondtionAnno == null) {
            continue;
        }
        for (String expr : expressions) {
            result.add(new Precondition(expr, precondtionAnno));
        }
    }
    return result;
}