package weasel.interpreter.bytecode;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import weasel.interpreter.WeaselClass;
import weasel.interpreter.WeaselField;
import weasel.interpreter.WeaselInterpreter;
import weasel.interpreter.WeaselMethodExecutor;
import weasel.interpreter.WeaselObject;
import weasel.interpreter.WeaselPrimitive;
import weasel.interpreter.WeaselThread;
import weasel.interpreter.WeaselThread.StackElement;
public class WeaselInstructionWriteField extends WeaselInstruction {
private final String fieldDesk;
private WeaselField field;
private WeaselClass type;
public WeaselInstructionWriteField(String fieldDesk){
this.fieldDesk = fieldDesk;
}
public WeaselInstructionWriteField(DataInputStream dataInputStream) throws IOException{
fieldDesk = dataInputStream.readUTF();
}
@Override
public void run(WeaselInterpreter interpreter, WeaselThread thread, WeaselMethodExecutor method) {
resolve(interpreter);
StackElement se = thread.pop();
WeaselObject object = interpreter.getObject(thread.getObject(thread.popObject()));
thread.push(se);
switch(WeaselPrimitive.getPrimitiveID(type)){
case WeaselPrimitive.BOOLEAN:
field.setBoolean(object, (Boolean)se.value);
break;
case WeaselPrimitive.BYTE:
field.setByte(object, (Byte)se.value);
break;
case WeaselPrimitive.CHAR:
field.setChar(object, (Character)se.value);
break;
case WeaselPrimitive.DOUBLE:
field.setDouble(object, (Double)se.value);
break;
case WeaselPrimitive.FLOAT:
field.setFloat(object, (Float)se.value);
break;
case WeaselPrimitive.INT:
field.setInt(object, (Integer)se.value);
break;
case WeaselPrimitive.LONG:
field.setLong(object, (Long)se.value);
break;
case WeaselPrimitive.SHORT:
field.setShort(object, (Short)se.value);
break;
default:
field.setObject(object, se.object);
break;
}
}
private void resolve(WeaselInterpreter interpreter){
if(field==null || type==null){
int d = fieldDesk.lastIndexOf(":");
int p = fieldDesk.lastIndexOf(".", d);
WeaselClass weaselClass = getWeaselClass(interpreter, fieldDesk.substring(0, p));
field = weaselClass.getField(fieldDesk.substring(p+1, d));
type = interpreter.getWeaselClass(fieldDesk.substring(d+1));
}
}
@Override
protected void saveToDataStream(DataOutputStream dataOutputStream) throws IOException {
dataOutputStream.writeUTF(fieldDesk);
}
@Override
public String toString() {
return "writeField "+fieldDesk;
}
}