invoke/util/ValueConversions.java

147     private static MethodType unboxType(Wrapper wrap, int kind) {
149             return MethodType.methodType(wrap.primitiveType(), wrap.wrapperType());
150         return MethodType.methodType(wrap.primitiveType(), Object.class, boolean.class);
155     private static MethodHandle unbox(Wrapper wrap, int kind) {
161         MethodHandle mh = cache.get(wrap);
166         switch (wrap) {
169                 throw new IllegalArgumentException("unbox "+wrap);
172         String name = "unbox" + wrap.wrapperSimpleName();
173         MethodType type = unboxType(wrap, kind);
185                 mh = mh.asType(unboxType(wrap, 0));
187             return cache.put(wrap, mh);
189         throw new IllegalArgumentException("cannot find unbox adapter for " + wrap
228      * according to the primitive type of the given wrapper {@code wrap}.
232     public static Number primitiveConversion(Wrapper wrap, Object x, boolean cast) {
250         if (xwrap == null || !cast && !wrap.isConvertibleFrom(xwrap))
252             return (Number) wrap.wrapperType().cast(x);
311     private static MethodType boxType(Wrapper wrap) {
313         Class<?> boxType = wrap.wrapperType();
314         return MethodType.methodType(boxType, wrap.primitiveType());
319     public static MethodHandle boxExact(Wrapper wrap) {
321         MethodHandle mh = cache.get(wrap);
326         String name = "box" + wrap.wrapperSimpleName();
327         MethodType type = boxType(wrap);
334             return cache.put(wrap, mh);
336         throw new IllegalArgumentException("cannot find box adapter for " + wrap);
370     public static MethodHandle zeroConstantFunction(Wrapper wrap) {
372         MethodHandle mh = cache.get(wrap);
377         MethodType type = MethodType.methodType(wrap.primitiveType());
378         switch (wrap) {
385                     mh = IMPL_LOOKUP.findStatic(THIS_CLASS, "zero"+wrap.wrapperSimpleName(), type);
392             return cache.put(wrap, mh);
396         if (wrap.isSubwordOrInt() && wrap != Wrapper.INT) {
398             return cache.put(wrap, mh);
400         throw new IllegalArgumentException("cannot find zero constant for " + wrap);