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/* * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.tools.tree; import sun.tools.java.*;import sun.tools.asm.Assembler;import java.io.PrintStream;import java.util.Hashtable; /** * WARNING: The contents of this source file are not part of any * supported API.  Code that depends on them does so at its own risk: * they are subject to change or removal without notice. */publicclass SuperExpression extends ThisExpression {     /**     * Constructor     */    public SuperExpression(long where) {        super(SUPER, where);    }     /**     * Constructor for "outer.super()"     */    public SuperExpression(long where, Expression outerArg) {        super(where, outerArg);        op = SUPER;    }     public SuperExpression(long where, Context ctx) {        super(where, ctx);        op = SUPER;    }     /**     * Check expression     */    public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) {        vset = checkCommon(env, ctx, vset, exp);        if (type != Type.tError) {            // "super" is not allowed in this context:            env.error(where, "undef.var.super", idSuper);        }        return vset;    }     /**     * Check if the present name is part of a scoping prefix.     */    public Vset checkAmbigName(Environment env, Context ctx,                               Vset vset, Hashtable exp,                               UnaryExpression loc) {        return checkCommon(env, ctx, vset, exp);    }     /** Common code for checkValue and checkAmbigName */    private Vset checkCommon(Environment env, Context ctx, Vset vset, Hashtable exp) {        ClassDeclaration superClass = ctx.field.getClassDefinition().getSuperClass();        if (superClass == null) {            env.error(where, "undef.var", idSuper);            type = Type.tError;            return vset;        }        vset = super.checkValue(env, ctx, vset, exp);        type = superClass.getType();        return vset;    } }