package javassist.compiler.ast;
import javassist.compiler.CompileError;
import javassist.compiler.TokenId;
public class Expr extends ASTList implements TokenId {
private static final long serialVersionUID = 1L;
protected int operatorId;
Expr(int op, ASTree _head, ASTList _tail) {
super(_head, _tail);
operatorId = op;
}
Expr(int op, ASTree _head) {
super(_head);
operatorId = op;
}
public static Expr make(int op, ASTree oprand1, ASTree oprand2) {
return new Expr(op, oprand1, new ASTList(oprand2));
}
public static Expr make(int op, ASTree oprand1) {
return new Expr(op, oprand1);
}
public int getOperator() { return operatorId; }
public void setOperator(int op) { operatorId = op; }
public ASTree oprand1() { return getLeft(); }
public void setOprand1(ASTree expr) {
setLeft(expr);
}
public ASTree oprand2() { return getRight().getLeft(); }
public void setOprand2(ASTree expr) {
getRight().setLeft(expr);
}
@Override
public void accept(Visitor v) throws CompileError { v.atExpr(this); }
public String getName() {
int id = operatorId;
if (id < 128)
return String.valueOf((char)id);
else if (NEQ <= id && id <= ARSHIFT_E)
return opNames[id - NEQ];
else if (id == INSTANCEOF)
return "instanceof";
else
return String.valueOf(id);
}
@Override
protected String getTag() {
return "op:" + getName();
}
}