Example usage for javax.lang.model.util Elements overrides

Introduction

In this page you can find the example usage for javax.lang.model.util Elements overrides.

Prototype

boolean overrides(ExecutableElement overrider, ExecutableElement overridden, TypeElement type);

Source Link

Document

Tests whether one method, as a member of a given type, overrides another method.

Usage

From source file:auto.parse.processor.AutoParseProcessor.java

private void findLocalAndInheritedMethods(TypeElement type, List<ExecutableElement> methods) {
    note("Looking at methods in " + type);
    Types typeUtils = processingEnv.getTypeUtils();
    Elements elementUtils = processingEnv.getElementUtils();
    for (TypeMirror superInterface : type.getInterfaces()) {
        findLocalAndInheritedMethods((TypeElement) typeUtils.asElement(superInterface), methods);
    }/* ww  w  .  j  a  v a 2s.  co  m*/
    if (type.getSuperclass().getKind() != TypeKind.NONE) {
        // Visit the superclass after superinterfaces so we will always see the implementation of a
        // method after any interfaces that declared it.
        findLocalAndInheritedMethods((TypeElement) typeUtils.asElement(type.getSuperclass()), methods);
    }
    // Add each method of this class, and in so doing remove any inherited method it overrides.
    // This algorithm is quadratic in the number of methods but it's hard to see how to improve
    // that while still using Elements.overrides.
    List<ExecutableElement> theseMethods = ElementFilter.methodsIn(type.getEnclosedElements());
    eclipseHack().sortMethodsIfSimulatingEclipse(theseMethods);
    for (ExecutableElement method : theseMethods) {
        if (!method.getModifiers().contains(Modifier.PRIVATE)) {
            boolean alreadySeen = false;
            for (Iterator<ExecutableElement> methodIter = methods.iterator(); methodIter.hasNext();) {
                ExecutableElement otherMethod = methodIter.next();
                if (elementUtils.overrides(method, otherMethod, type)) {
                    methodIter.remove();
                } else if (method.getSimpleName().equals(otherMethod.getSimpleName())
                        && method.getParameters().equals(otherMethod.getParameters())) {
                    // If we inherit this method on more than one path, we don't want to add it twice.
                    alreadySeen = true;
                }
            }
            if (!alreadySeen) {
                methods.add(method);
            }
        }
    }
}

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