class Expr extends ASTList implements TokenId {
    /* operator must be either of:
     * (unary) +, (unary) -, ++, --, !, ~,
     * ARRAY, . (dot), MEMBER (static member access).
     * Otherwise, the object should be an instance of a subclass.
     */

    /** default serialVersionUID */
    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() {<FILL_FUNCTION_BODY>}

    @Override
    protected String getTag() {
        return "op:" + 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);
    
<methods>public void <init>(org.hotswap.agent.javassist.compiler.ast.ASTree, org.hotswap.agent.javassist.compiler.ast.ASTList) ,public void <init>(org.hotswap.agent.javassist.compiler.ast.ASTree) ,public void accept(org.hotswap.agent.javassist.compiler.ast.Visitor) throws org.hotswap.agent.javassist.compiler.CompileError,public static org.hotswap.agent.javassist.compiler.ast.ASTList append(org.hotswap.agent.javassist.compiler.ast.ASTList, org.hotswap.agent.javassist.compiler.ast.ASTree) ,public static org.hotswap.agent.javassist.compiler.ast.ASTList concat(org.hotswap.agent.javassist.compiler.ast.ASTList, org.hotswap.agent.javassist.compiler.ast.ASTList) ,public org.hotswap.agent.javassist.compiler.ast.ASTree getLeft() ,public org.hotswap.agent.javassist.compiler.ast.ASTree getRight() ,public org.hotswap.agent.javassist.compiler.ast.ASTree head() ,public int length() ,public static int length(org.hotswap.agent.javassist.compiler.ast.ASTList) ,public static org.hotswap.agent.javassist.compiler.ast.ASTList make(org.hotswap.agent.javassist.compiler.ast.ASTree, org.hotswap.agent.javassist.compiler.ast.ASTree, org.hotswap.agent.javassist.compiler.ast.ASTree) ,public void setHead(org.hotswap.agent.javassist.compiler.ast.ASTree) ,public void setLeft(org.hotswap.agent.javassist.compiler.ast.ASTree) ,public void setRight(org.hotswap.agent.javassist.compiler.ast.ASTree) ,public void setTail(org.hotswap.agent.javassist.compiler.ast.ASTList) ,public org.hotswap.agent.javassist.compiler.ast.ASTList sublist(int) ,public boolean subst(org.hotswap.agent.javassist.compiler.ast.ASTree, org.hotswap.agent.javassist.compiler.ast.ASTree) ,public org.hotswap.agent.javassist.compiler.ast.ASTList tail() ,public java.lang.String toString() <variables>private org.hotswap.agent.javassist.compiler.ast.ASTree left,private org.hotswap.agent.javassist.compiler.ast.ASTList right,private static final long serialVersionUID