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package spiglet.spiglet2kanga;
import java.util.Vector;
public class SpgExpr extends SpgSym {
public enum ExpType { CALL, ALLOC, BinOp, Simple };
public ExpType type;
public String op;
public SpgTemp oprand;
public SpgSimpExpr se;
public Vector<SpgTemp> callParams;
public SpgExpr(ExpType t) {
type = t;
callParams = new Vector<SpgTemp>();
}
public void addCallParam(SpgTemp t) {
if (type!=ExpType.CALL) {
System.err.println("Error adding parameter, should be a CALL expression.");
return;
}
callParams.addElement(t);
}
public String toString() {
String str;
switch (type) {
case ALLOC:
return "ALLOC " + se.toString();
case BinOp:
return op + " " + oprand.toString() + " " + se.toString();
case CALL:
str = "CALL " + se.toString();
for (int i=0; i<callParams.size(); i++) {
str += " " + callParams.elementAt(i).toString();
}
return str;
case Simple:
return ((SpgSimpExpr)this).toString();
default:
return null;
}
}
}
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