/*
* [The "BSD licence"]
* Copyright (c) 2010 Ben Gruver (JesusFreke)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jf.dexlib.EncodedValue;
import org.jf.dexlib.Util.AnnotatedOutput;
import org.jf.dexlib.Util.EncodedValueUtils;
import org.jf.dexlib.Util.Input;
public class FloatEncodedValue extends EncodedValue {
public final float value;
/**
* Constructs a new <code>FloatEncodedValue</code> by reading the value from the given <code>Input</code> object.
* The <code>Input</code>'s cursor should be set to the 2nd byte of the encoded value, and the high 3 bits of
* the first byte should be passed as the valueArg parameter
* @param in The <code>Input</code> object to read from
* @param valueArg The high 3 bits of the first byte of this encoded value
*/
protected FloatEncodedValue(Input in, byte valueArg) {
long longValue = EncodedValueUtils.decodeRightZeroExtendedValue(in.readBytes(valueArg + 1));
value = Float.intBitsToFloat((int)((longValue >> 32) & 0xFFFFFFFFL));
}
/**
* Constructs a new <code>FloatEncodedValue</code> with the given value
* @param value The value
*/
public FloatEncodedValue(float value) {
this.value = value;
}
/** {@inheritDoc} */
public void writeValue(AnnotatedOutput out) {
byte[] bytes = EncodedValueUtils.encodeRightZeroExtendedValue(((long)Float.floatToRawIntBits(value)) << 32);
if (out.annotates()) {
out.annotate(1, "value_type=" + ValueType.VALUE_FLOAT.name() + ",value_arg=" + (bytes.length - 1));
out.annotate(bytes.length, "value: " + value);
}
out.writeByte(ValueType.VALUE_FLOAT.value | ((bytes.length - 1) << 5));
out.write(bytes);
}
/** {@inheritDoc} */
public int placeValue(int offset) {
return offset + 1 + EncodedValueUtils.getRequiredBytesForRightZeroExtendedValue(
((long)Float.floatToRawIntBits(value)) << 32);
}
/** {@inheritDoc} */
protected int compareValue(EncodedValue o) {
FloatEncodedValue other = (FloatEncodedValue)o;
return Float.compare(value, other.value);
}
/** {@inheritDoc} */
public ValueType getValueType() {
return ValueType.VALUE_FLOAT;
}
@Override
public int hashCode() {
return Float.floatToRawIntBits(value);
}
}