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fernflower/src/de/fernflower/struct/consts/PrimitiveConstant.java

131 lines
3.1 KiB

/*
* Fernflower - The Analytical Java Decompiler
* http://www.reversed-java.com
*
* (C) 2008 - 2010, Stiver
*
* This software is NEITHER public domain NOR free software
* as per GNU License. See license.txt for more details.
*
* This software is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE.
*/
package de.fernflower.struct.consts;
import java.io.DataOutputStream;
import java.io.IOException;
import de.fernflower.code.CodeConstants;
/*
* Integer, Long, Float, Double, String, Class, UTF8
*/
public class PrimitiveConstant extends PooledConstant {
// *****************************************************************************
// public fields
// *****************************************************************************
public int index;
public Object value;
public boolean isArray;
// *****************************************************************************
// constructors
// *****************************************************************************
public PrimitiveConstant(int type, Object value) {
this.type = type;
this.value = value;
initConstant();
}
public PrimitiveConstant(int type, int index) {
this.type = type;
this.index = index;
}
// *****************************************************************************
// public methods
// *****************************************************************************
public int getInt() {
return ((Integer)value).intValue();
}
public long getLong() {
return ((Long)value).longValue();
}
public float getFloat() {
return ((Float)value).floatValue();
}
public double getDouble() {
return ((Double)value).doubleValue();
}
public String getString() {
return (String)value;
}
public void resolveConstant(ConstantPool pool) {
if(type == CONSTANT_Class || type == CONSTANT_String || type == CONSTANT_MethodType) {
value = pool.getPrimitiveConstant(index).getString();
initConstant();
}
}
public void writeToStream(DataOutputStream out) throws IOException {
out.writeByte(type);
switch(type) {
case CONSTANT_Integer:
out.writeInt(getInt());
break;
case CONSTANT_Float:
out.writeFloat(getFloat());
break;
case CONSTANT_Long:
out.writeLong(getLong());
break;
case CONSTANT_Double:
out.writeDouble(getDouble());
break;
case CONSTANT_Utf8:
out.writeUTF(getString());
break;
default: // CONSTANT_Class, CONSTANT_String, CONSTANT_MethodType
out.writeShort(index);
}
}
public boolean equals(Object obj) {
if(obj == null || !(obj instanceof PrimitiveConstant)) {
return false;
}
PrimitiveConstant cn = (PrimitiveConstant)obj;
return this.type == cn.type &&
this.isArray == cn.isArray &&
this.value.equals(cn.value);
}
private void initConstant() {
if(type == CONSTANT_Class) {
String className = getString();
isArray = (className.length() > 0 && className.charAt(0)=='['); // empty string for a class name seems to be possible in some android files
}
}
}