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package com.cycling74.max;
import java.lang.reflect.*;
import com.e1.pdj.PDJError;
class Attribute {
boolean readOnly = false;
// the method setter and getter if specified
Method setter;
Method getter;
// the field to update if no setter or getter is specified
Field field;
// attribute type
char type;
// the owner of the field or method
Object obj;
// tells if the arguments are a array
boolean isArray;
Attribute(Object obj, String name, String setter_name, String getter_name) {
char typeCheck = 0;
try {
this.obj = obj;
if ( getter == null ) {
field = obj.getClass().getDeclaredField(name);
field.setAccessible(true);
type = mapType(field.getType());
if ( type == '-' ) {
throw new PDJError("Field: " + name + " is a unsupported type");
}
isArray = Character.isLowerCase(type);
} else {
getter = obj.getClass().getDeclaredMethod(getter_name, null);
type = mapType(getter.getReturnType());
if ( type == '-' ) {
throw new PDJError("Method: " + getter_name + " returns a unsupported type");
}
isArray = Character.isLowerCase(type);
}
if ( setter == null ) {
field = obj.getClass().getDeclaredField(name);
field.setAccessible(true);
typeCheck = mapType(field.getType());
} else {
Method methods[] = obj.getClass().getMethods();
for(int i=0;i<methods.length;i++) {
if ( methods[i].getName().equals(setter_name) ) {
Class c[] = methods[i].getParameterTypes();
if ( c.length > 1 )
throw new PDJError("Method: " + setter_name + " has too much parameters to be a setter");
typeCheck = mapType(c[0]);
setter = methods[i];
break;
}
}
if ( typeCheck == 0 ) {
throw new NoSuchMethodException(setter_name);
}
}
} catch ( Exception e ) {
throw new PDJError(e);
}
if ( typeCheck != type ) {
throw new PDJError("Object type for setter and getter is not the same");
}
}
private char mapType(Class clz) {
if ( clz == Integer.TYPE )
return 'i';
if ( clz == int[].class )
return 'I';
if ( clz == Float.TYPE )
return 'f';
if ( clz == float[].class )
return 'F';
if ( clz == Double.TYPE )
return 'd';
if ( clz == double[].class )
return 'D';
if ( clz == Boolean.TYPE )
return 'z';
if ( clz == Boolean[].class )
return 'Z';
if ( clz == Byte.TYPE )
return 'b';
if ( clz == byte[].class )
return 'B';
if ( clz == Character.TYPE )
return 'c';
if ( clz == char[].class )
return 'C';
if ( clz == Short.TYPE )
return 's';
if ( clz == short[].class )
return 'S';
if ( clz == String.class )
return 'g';
if ( clz == String[].class )
return 'G';
if ( clz == Atom.class )
return 'a';
if ( clz == Atom[].class )
return 'A';
return '-';
}
private void fieldSetter(Atom[] value) throws Exception {
Object work;
int i;
switch ( type ) {
case 'z' :
field.setBoolean(obj, value[0].toBoolean());
break;
case 'Z' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setBoolean(work, i, value[i].toBoolean());
break;
case 'f' :
field.setFloat(obj, value[0].toFloat());
break;
case 'F' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setFloat(work, i, value[i].toFloat());
break;
case 'i' :
field.setInt(obj, value[0].toInt());
break;
case 'I' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setInt(work, i, value[i].toInt());
break;
case 'd' :
field.setDouble(obj, value[0].toDouble());
break;
case 'D' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setDouble(work, i, value[i].toDouble());
break;
case 'b' :
field.setByte(obj, value[0].toByte());
break;
case 'B' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setByte(work, i, value[i].toByte());
break;
case 'c' :
field.setChar(obj, value[0].toChar());
break;
case 'C' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setChar(work, i, value[i].toChar());
break;
case 's' :
field.setShort(obj, value[0].toShort());
break;
case 'S' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.setShort(work, i, value[i].toShort());
break;
case 'g' :
field.set(obj, value.toString());
break;
case 'G' :
work = field.get(obj);
for (i=0;i<value.length;i++)
Array.set(work, i, value[i].toString());
break;
case 'a' :
field.set(obj, value[0]);
break;
case 'A' :
field.set(obj, value);
break;
default:
throw new PDJError("Unable to pass attribute value");
}
}
private Atom[] fieldGetter() throws Exception {
Object array = null;
Atom[] ret;
int i;
if ( isArray ) {
ret = new Atom[1];
} else {
array = field.get(obj);
ret = new Atom[Array.getLength(array)];
}
switch ( type ) {
case 'z' :
ret[0] = Atom.newAtom(field.getBoolean(obj));
break;
case 'Z' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getBoolean(array, i));
break;
case 'f' :
ret[0] = Atom.newAtom(field.getFloat(obj));
break;
case 'F' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getFloat(array, i));
break;
case 'i' :
ret[0] = Atom.newAtom(field.getInt(obj));
break;
case 'I' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getInt(array, i));
break;
case 'd' :
ret[0] = Atom.newAtom(field.getDouble(obj));
break;
case 'D' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getDouble(array, i));
break;
case 'b' :
ret[0] = Atom.newAtom(field.getByte(obj));
break;
case 'B' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getByte(array, i));
break;
case 'c' :
ret[0] = Atom.newAtom(field.getChar(obj));
break;
case 'C' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getChar(array, i));
break;
case 's' :
ret[0] = Atom.newAtom(field.getShort(obj));
break;
case 'S' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(Array.getShort(array, i));
break;
case 'g' :
ret[0] = Atom.newAtom((String) field.get(obj));
break;
case 'G' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom((String) Array.get(array, i));
break;
case 'a' :
ret[0] = (Atom) field.get(obj);
break;
case 'A' :
for (i=0;i<ret.length;i++)
ret[i] = (Atom) Array.get(array, i);
break;
default:
throw new PDJError("Unable to pass attribute value");
}
return ret;
}
private Atom[] methodGetter() throws Exception {
Object array = null;
Atom[] ret;
int i;
if ( isArray ) {
ret = new Atom[1];
} else {
array = field.get(obj);
ret = new Atom[Array.getLength(array)];
}
switch ( type ) {
case 'z' :
ret[0] = Atom.newAtom(((Boolean)getter.invoke(obj, null)).booleanValue());
break;
case 'Z' :
boolean tmpz[] = (boolean[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpz[i]);
break;
case 'f' :
ret[0] = Atom.newAtom(((Float)getter.invoke(obj, null)).floatValue());
break;
case 'F' :
float tmpf[] = (float[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpf[i]);
break;
case 'i' :
ret[0] = Atom.newAtom(((Integer)getter.invoke(obj, null)).intValue());
break;
case 'I' :
int tmpi[] = (int[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpi[i]);
break;
case 'd' :
ret[0] = Atom.newAtom(((Double)getter.invoke(obj, null)).doubleValue());
break;
case 'D' :
double tmpd[] = (double[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpd[i]);
break;
case 'b' :
ret[0] = Atom.newAtom(((Byte)getter.invoke(obj, null)).byteValue());
break;
case 'B' :
byte tmpb[] = (byte[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpb[i]);
break;
case 'c' :
ret[0] = Atom.newAtom(((Character)getter.invoke(obj, null)).charValue());
break;
case 'C' :
char tmpc[] = (char[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmpc[i]);
break;
case 's' :
ret[0] = Atom.newAtom(((Short)getter.invoke(obj, null)).shortValue());
break;
case 'S' :
short tmps[] = (short[]) getter.invoke(obj, null);
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom(tmps[i]);
break;
case 'g' :
ret[0] = Atom.newAtom((String) getter.invoke(obj, null));
break;
case 'G' :
for (i=0;i<ret.length;i++)
ret[i] = Atom.newAtom((String) Array.get(array, i));
break;
case 'a' :
ret[0] = (Atom) getter.invoke(obj, null);
break;
case 'A' :
ret = (Atom []) getter.invoke(obj, null);
break;
default:
throw new PDJError("Unable to pass attribute value");
}
return ret;
}
private Object setterCast(Atom values[]) throws Exception {
int i;
switch ( type ) {
case 'z' :
return new Boolean(values[0].toBoolean());
case 'Z' :
boolean tmpz[] = new boolean[values.length];
for (i=0;i<values.length; i++)
tmpz[i] = values[i].toBoolean();
return tmpz;
case 'f' :
return new Float(values[0].toFloat());
case 'F' :
float tmpf[] = new float[values.length];
for (i=0;i<values.length; i++)
tmpf[i] = values[i].toFloat();
return tmpf;
case 'i' :
return new Integer(values[0].toInt());
case 'I' :
int tmpi[] = new int[values.length];
for (i=0;i<values.length; i++)
tmpi[i] = values[i].toInt();
return tmpi;
case 'd' :
return new Double(values[0].toDouble());
case 'D' :
double tmpd[] = new double[values.length];
for (i=0;i<values.length; i++)
tmpd[i] = values[i].toDouble();
return tmpd;
case 'b' :
return new Byte(values[0].toByte());
case 'B' :
byte tmpb[] = new byte[values.length];
for (i=0;i<values.length; i++)
tmpb[i] = values[i].toByte();
return tmpb;
case 'c' :
return new Character(values[0].toChar());
case 'C' :
char tmpc[] = new char[values.length];
for (i=0;i<values.length; i++)
tmpc[i] = values[i].toChar();
return tmpc;
case 's' :
return new Short(values[0].toShort());
case 'S' :
short tmps[] = new short[values.length];
for (i=0;i<values.length; i++)
tmps[i] = values[i].toShort();
return tmps;
case 'g' :
return values[0].toString();
case 'G' :
String tmpg[] = new String[values.length];
for (i=0;i<values.length;i++)
tmpg[i] = values[0].toString();
return tmpg;
case 'a' :
return values[0];
case 'A' :
return values;
default:
throw new PDJError("Unable to pass attribute value");
}
}
Atom[] get() {
try {
if ( getter == null )
return fieldGetter();
return methodGetter();
} catch ( Exception e ){
throw new PDJError(e);
}
}
void set(Atom values[]) {
if ( readOnly )
throw new PDJError("Field is readonly");
try {
if ( setter == null )
fieldSetter(values);
else
setter.invoke(obj, new Object[] { setterCast(values) });
} catch (Exception e) {
throw new PDJError(e);
}
}
}
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