Examples with Types javax.lang.model.util.Types used on opensource projects

Example 11 with Types

use of javax.lang.model.util.Types in project auto by google.

the class EclipseHack method methodReturnTypes.

/**
   * Returns a map containing the real return types of the given methods, knowing that they appear
   * in the given type. This means that if the given type is say
   * {@code StringIterator implements Iterator<String>} then we want the {@code next()} method
   * to map to String, rather than the {@code T} that it returns as inherited from
   * {@code Iterator<T>}. This method is in EclipseHack because if it weren't for
   * <a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=382590">this Eclipse bug</a> it would
   * be trivial. Unfortunately, versions of Eclipse up to at least 4.5 have a bug where the
   * {@link Types#asMemberOf} method throws IllegalArgumentException if given a method that is
   * inherited from an interface. Fortunately, Eclipse's implementation of
   * {@link Elements#getAllMembers} does the type substitution that {@code asMemberOf} would have
   * done. But javac's implementation doesn't. So we try the way that would work if Eclipse weren't
   * buggy, and only if we get IllegalArgumentException do we use {@code getAllMembers}.
   */
ImmutableMap<ExecutableElement, TypeMirror> methodReturnTypes(Set<ExecutableElement> methods, DeclaredType in) {
    Types typeUtils = processingEnv.getTypeUtils();
    ImmutableMap.Builder<ExecutableElement, TypeMirror> map = ImmutableMap.builder();
    Map<Name, ExecutableElement> noArgMethods = null;
    for (ExecutableElement method : methods) {
        TypeMirror returnType = null;
        try {
            TypeMirror methodMirror = typeUtils.asMemberOf(in, method);
            returnType = MoreTypes.asExecutable(methodMirror).getReturnType();
        } catch (IllegalArgumentException e) {
            if (method.getParameters().isEmpty()) {
                if (noArgMethods == null) {
                    noArgMethods = noArgMethodsIn(in);
                }
                returnType = noArgMethods.get(method.getSimpleName()).getReturnType();
            }
        }
        if (returnType == null) {
            returnType = method.getReturnType();
        }
        map.put(method, returnType);
    }
    return map.build();
}

Example 12 with Types

use of javax.lang.model.util.Types in project auto by google.

the class MoreElementsTest method visibleMethodsFromObject.

private Set<ExecutableElement> visibleMethodsFromObject() {
    Types types = compilation.getTypes();
    TypeMirror intMirror = types.getPrimitiveType(TypeKind.INT);
    TypeMirror longMirror = types.getPrimitiveType(TypeKind.LONG);
    Set<ExecutableElement> methods = new HashSet<ExecutableElement>();
    for (ExecutableElement method : ElementFilter.methodsIn(objectElement.getEnclosedElements())) {
        if (method.getModifiers().contains(Modifier.PUBLIC) || method.getModifiers().contains(Modifier.PROTECTED)) {
            methods.add(method);
        }
    }
    assertThat(methods).containsAllOf(getMethod(Object.class, "clone"), getMethod(Object.class, "finalize"), getMethod(Object.class, "wait"), getMethod(Object.class, "wait", longMirror), getMethod(Object.class, "wait", longMirror, intMirror));
    return methods;
}

Example 13 with Types

use of javax.lang.model.util.Types in project auto by google.

the class MoreElementsTest method getLocalAndInheritedMethods_Old.

@Test
public void getLocalAndInheritedMethods_Old() {
    Elements elements = compilation.getElements();
    Types types = compilation.getTypes();
    TypeMirror intMirror = types.getPrimitiveType(TypeKind.INT);
    TypeMirror longMirror = types.getPrimitiveType(TypeKind.LONG);
    TypeElement childType = elements.getTypeElement(Child.class.getCanonicalName());
    @SuppressWarnings("deprecation") Set<ExecutableElement> childTypeMethods = MoreElements.getLocalAndInheritedMethods(childType, elements);
    Set<ExecutableElement> objectMethods = visibleMethodsFromObject();
    assertThat(childTypeMethods).containsAllIn(objectMethods);
    Set<ExecutableElement> nonObjectMethods = Sets.difference(childTypeMethods, objectMethods);
    assertThat(nonObjectMethods).containsExactly(getMethod(ParentClass.class, "foo"), getMethod(ParentInterface.class, "bar", longMirror), getMethod(Child.class, "bar"), getMethod(Child.class, "baz"), getMethod(Child.class, "buh", intMirror), getMethod(Child.class, "buh", intMirror, intMirror));
}

Example 14 with Types

use of javax.lang.model.util.Types in project auto by google.

the class MoreElementsTest method getMethod.

private ExecutableElement getMethod(Class<?> c, String methodName, TypeMirror... parameterTypes) {
    TypeElement type = compilation.getElements().getTypeElement(c.getCanonicalName());
    Types types = compilation.getTypes();
    ExecutableElement found = null;
    for (ExecutableElement method : ElementFilter.methodsIn(type.getEnclosedElements())) {
        if (method.getSimpleName().contentEquals(methodName) && method.getParameters().size() == parameterTypes.length) {
            boolean match = true;
            for (int i = 0; i < parameterTypes.length; i++) {
                TypeMirror expectedType = parameterTypes[i];
                TypeMirror actualType = method.getParameters().get(i).asType();
                match &= types.isSameType(expectedType, actualType);
            }
            if (match) {
                assertThat(found).isNull();
                found = method;
            }
        }
    }
    assertWithMessage(methodName + Arrays.toString(parameterTypes)).that(found).isNotNull();
    return found;
}

Example 15 with Types

use of javax.lang.model.util.Types in project auto by google.

the class MoreElementsTest method getLocalAndInheritedMethods.

@Test
public void getLocalAndInheritedMethods() {
    Elements elements = compilation.getElements();
    Types types = compilation.getTypes();
    TypeMirror intMirror = types.getPrimitiveType(TypeKind.INT);
    TypeMirror longMirror = types.getPrimitiveType(TypeKind.LONG);
    TypeElement childType = elements.getTypeElement(Child.class.getCanonicalName());
    @SuppressWarnings("deprecation") Set<ExecutableElement> childTypeMethods = MoreElements.getLocalAndInheritedMethods(childType, types, elements);
    Set<ExecutableElement> objectMethods = visibleMethodsFromObject();
    assertThat(childTypeMethods).containsAllIn(objectMethods);
    Set<ExecutableElement> nonObjectMethods = Sets.difference(childTypeMethods, objectMethods);
    assertThat(nonObjectMethods).containsExactly(getMethod(ParentClass.class, "foo"), getMethod(ParentInterface.class, "bar", longMirror), getMethod(Child.class, "bar"), getMethod(Child.class, "baz"), getMethod(Child.class, "buh", intMirror), getMethod(Child.class, "buh", intMirror, intMirror));
}