1 | package net.sourceforge.retroweaver.runtime.java.lang.reflect; |
2 | |
3 | import static org.objectweb.asm.Opcodes.ACC_SYNTHETIC; |
4 | import static org.objectweb.asm.Opcodes.ACC_VARARGS; |
5 | |
6 | import java.lang.reflect.Constructor; |
7 | import java.lang.reflect.Method; |
8 | |
9 | import net.sourceforge.retroweaver.runtime.java.lang.annotation.AIB; |
10 | import net.sourceforge.retroweaver.runtime.java.lang.annotation.Annotation; |
11 | |
12 | /** |
13 | * A mirror of java.lang.reflect.Constructor. Unfortunately, although this class |
14 | * is almost a direct copy of Method_, there's not an easy way to share the |
15 | * implementation between the two, because Method and Constructor don't have any |
16 | * sort of typed relationship. |
17 | * |
18 | * @author Toby Reyelts Date: Feb 21, 2005 Time: 2:40:01 AM |
19 | */ |
20 | public class Constructor_ { |
21 | |
22 | private Constructor_() { |
23 | // private constructor |
24 | } |
25 | |
26 | // Returns this element's annotation for the specified type if such an |
27 | // annotation is present, else null. |
28 | public static <T extends Annotation> T getAnnotation(final Constructor cons, final Class<T> annotationType) { |
29 | final Class c = cons.getDeclaringClass(); |
30 | return AIB.getAib(c).getMethodAnnotation(cons.getName(), cons.getParameterTypes(), Void.class, annotationType); |
31 | } |
32 | |
33 | // Returns all annotations present on this element. |
34 | // |
35 | // We have to search superclasses and interfaces, looking for annotations |
36 | // which are meta-annotated with the @Inherited Annotation. |
37 | // (Yuk) |
38 | // |
39 | public static Annotation[] getAnnotations(final Constructor cons) { |
40 | return getDeclaredAnnotations(cons); |
41 | } |
42 | |
43 | // Returns all annotations that are directly present on this element. |
44 | public static Annotation[] getDeclaredAnnotations(final Constructor cons) { |
45 | final Class c = cons.getDeclaringClass(); |
46 | return AIB.getAib(c).getMethodAnnotations(cons.getName(), cons.getParameterTypes(), Void.class); |
47 | } |
48 | |
49 | // Returns true if an annotation for the specified type is present on this |
50 | // element, else false. |
51 | public static boolean isAnnotationPresent(final Constructor cons, final Class<? extends Annotation> annotationType) { |
52 | return getAnnotation(cons, annotationType) != null; |
53 | } |
54 | |
55 | public static Annotation[][] getParameterAnnotations(final Constructor cons) { |
56 | final Class c = cons.getDeclaringClass(); |
57 | return AIB.getAib(c).getMethodParameterAnnotations(cons.getName(), cons.getParameterTypes(), Void.class); |
58 | } |
59 | |
60 | // Returns true if this constructor was declared to take a variable number of arguments; returns false otherwise. |
61 | public static boolean isVarArgs(final Constructor cons) { |
62 | final Class c = cons.getDeclaringClass(); |
63 | return ReflectionDescriptor.getReflectionDescriptor(c).testConstructorAccess(cons, ACC_VARARGS); |
64 | } |
65 | |
66 | // Returns true if this constructor is a synthetic constructor; returns false otherwise. |
67 | public static boolean isSynthetic(final Constructor cons) { |
68 | final Class c = cons.getDeclaringClass(); |
69 | return ReflectionDescriptor.getReflectionDescriptor(c).testConstructorAccess(cons, ACC_SYNTHETIC); |
70 | } |
71 | |
72 | } |