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BEGIN LICENSE BLOCK ***** Version: CPL 1.0/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Common Public License Version 1.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.eclipse.org/legal/cpl-v10.html Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Copyright (C) 2008 JRuby project Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the CPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the CPL, the GPL or the LGPL. END LICENSE BLOCK ***
 
 
 package org.jruby.ext.ffi;
 
 import org.jruby.Ruby;
 
 public final class Util {
     private Util() {}
     public static final byte int8Value(IRubyObject parameter) {
         return (bytelongValue(parameter);
     }
 
     public static final short uint8Value(IRubyObject parameter) {
         return (shortlongValue(parameter);
     }
 
     public static final short int16Value(IRubyObject parameter) {
         return (shortlongValue(parameter);
     }
     
     public static final int uint16Value(IRubyObject parameter) {
         return (intlongValue(parameter);
     }
 
     public static final int int32Value(IRubyObject parameter) {
         return (intlongValue(parameter);
     }
 
     public static final long uint32Value(IRubyObject parameter) {
         return longValue(parameter);
     }
 
     public static final long int64Value(IRubyObject parameter) {
         return longValue(parameter);
     }
 
     public static final long uint64Value(IRubyObject parameter) {
         final long value = parameter instanceof RubyBignum
                 ? ((RubyBignumparameter).getValue().longValue()
                 :longValue(parameter);
         return value;
     }
 
     public static final float floatValue(IRubyObject parameter) {
         return (float) RubyNumeric.num2dbl(parameter);
     }
 
     public static final double doubleValue(IRubyObject parameter) {
         return RubyNumeric.num2dbl(parameter);
     }

    
Converts characters like 'a' or 't' to an integer value

Parameters:
parameter
Returns:
 
     public static final long longValue(IRubyObject parameter) {
        return RubyNumeric.num2long(parameter);
    }
    public static int intValue(IRubyObject objRubyHash enums) {
        if (obj instanceof RubyInteger) {
                return (int) ((RubyIntegerobj).getLongValue();
        } else if (obj instanceof RubySymbol) {
            IRubyObject value = enums.fastARef(obj);
            if (value.isNil()) {
                throw obj.getRuntime().newArgumentError("invalid enum value, " + obj.inspect());
            }
            return (intlongValue(value);
        } else {
            return (intlongValue(obj);
        }
    }
    public static final IRubyObject newSigned8(Ruby runtimebyte value) {
        return runtime.newFixnum(value);
    }
    public static final IRubyObject newUnsigned8(Ruby runtimebyte value) {
        return runtime.newFixnum(value < 0 ? (long)((value & 0x7FL) + 0x80L) : value);
    }
    public static final IRubyObject newSigned16(Ruby runtimeshort value) {
        return runtime.newFixnum(value);
    }
    public static final IRubyObject newUnsigned16(Ruby runtimeshort value) {
        return runtime.newFixnum(value < 0 ? (long)((value & 0x7FFFL) + 0x8000L) : value);
    }
    public static final IRubyObject newSigned32(Ruby runtimeint value) {
        return runtime.newFixnum(value);
    }
    public static final IRubyObject newUnsigned32(Ruby runtimeint value) {
        return runtime.newFixnum(value < 0 ? (long)((value & 0x7FFFFFFFL) + 0x80000000L) : value);
    }
    public static final IRubyObject newSigned64(Ruby runtimelong value) {
        return runtime.newFixnum(value);
    }
    private static final BigInteger UINT64_BASE = BigInteger.valueOf(.).add(.);
    public static final IRubyObject newUnsigned64(Ruby runtimelong value) {
        return value < 0
                    ? RubyBignum.newBignum(runtime, BigInteger.valueOf(value & 0x7fffffffffffffffL).add())
                    : runtime.newFixnum(value);
    }
    @Deprecated
    public static final <T> T convertParameter(IRubyObject parameterClass<T> paramClass) {
        return paramClass.cast(parameter instanceof JavaObject
            ? ((JavaObjectparameter).getValue()
            : parameter.toJava(paramClass));
    }
    public static final ByteBuffer slice(ByteBuffer bufint offset) {
        ByteBuffer tmp = buf.duplicate();
        tmp.position((intoffset);
        return tmp.slice();
    }
    public static final void checkBounds(Ruby runtimelong sizelong offlong len) {
        if ((off | len | (off + len) | (size - (off + len))) < 0) {
            throw runtime.newIndexError("Memory access offset="
                    + off + " size=" + len + " is out of bounds");
        }
    }
    public static Type findType(ThreadContext contextIRubyObject name) {
        return context.runtime.getFFI().getTypeResolver().findType(context.runtimename);
    }
    public static ByteOrder parseByteOrder(Ruby runtimeIRubyObject byte_order) {
        if (byte_order instanceof RubySymbol || byte_order instanceof RubyString) {
            String orderName = byte_order.asJavaString();
            if ("network".equals(orderName) || "big".equals(orderName)) {
                return .;
            } else if ("little".equals(orderName)) {
                return .;
            
            } else {
                return ByteOrder.nativeOrder();
            }
        } else {
            throw runtime.newTypeError(byte_orderruntime.getSymbol());
        }
    }
    public static int roundUpToPowerOfTwo(int v) {
        if (v < 1) return 1;
        v--;
        v |= v >> 1;
        v |= v >> 2;
        v |= v >> 4;
        v |= v >> 8;
        v |= v >> 16;
        return v + 1;
    }
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