/*
 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package vm.mlvm.meth.share;

public class PrimitiveTypeConverter {

    /** Unbox, cast and box */
    public static Object cast(Object fromValue, Class<?> toType) {

        Class<?> fromType = fromValue.getClass();
#
# String[] ptypes = new String[] { "byte", "short", "char", "int", "long", "float", "double" };
# String[] btypes = new String[] { "Byte", "Short", "Character", "Integer", "Long", "Float", "Double" };
#
# for ( int f = 0; f < ptypes.length; f++ ) {
#   String fb = btypes[f];
#   String fp = ptypes[f];
#   for ( int t = 0; t < ptypes.length; t++ ) {
#     String tp = ptypes[t];
#     String tb = btypes[t];

        if ( @fb.class.equals(fromType) && toType.equals(@tp.class) )
#
#     if ( f == t ) {
#
            return fromValue;
#
#     } else {
#
            return @tb.valueOf((@tp) ((@fb) fromValue).@(fp)Value());
#
#     }
#   }
# }

        throw new IllegalArgumentException("Can't cast [" + fromValue + "] to " + toType);
    }

    /** Unbox, do primitive widening conversion (JLS 5.1.2) and box */
    public static Object convert(Object fromValue, Class<?> toType) {
        Class<?> fromType = fromValue.getClass();
#
# for ( int t = 0; t < ptypes.length; t++ ) {
#   String tp = ptypes[t];
#   String tb = btypes[t];
#
#   if ( tp.equals("char") ) continue;
#

        if ( @tb.class.equals(fromType) && toType.equals(@tp.class) )
            return fromValue;
#
#   for ( int f = 0; f < t; f++ ) {
#     String fp = ptypes[f];
#     String fb = btypes[f];

        if ( @fb.class.equals(fromType) && toType.equals(@tp.class) )
            return @tb.valueOf((@tp) ((@fb) fromValue).@(fp)Value());
#   }
# }

        throw new IllegalArgumentException("Can't convert [" + fromValue + "] to " + toType);
    }
}