/*

 * 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 sun.tools.asm.Label;

import java.io.PrintStream;

/**

 * 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.

 */

public

class InlineReturnStatement extends Statement {

    Expression expr;

    /**

     * Constructor

     */

    public InlineReturnStatement(long where, Expression expr) {

        super(INLINERETURN, where);

        this.expr = expr;

    }

    /**

     * Get the destination context of a break

     */

    Context getDestination(Context ctx) {

        for (; ctx != null ; ctx = ctx.prev) {

            if ((ctx.node != null) && ((ctx.node.op == INLINEMETHOD) || (ctx.node.op == INLINENEWINSTANCE))) {

                return ctx;

            }

        }

        return null;

    }

    /**

     * Inline

     */

    public Statement inline(Environment env, Context ctx) {

        if (expr != null) {

            expr = expr.inlineValue(env, ctx);

        }

        return this;

    }

    /**

     * Create a copy of the statement for method inlining

     */

    public Statement copyInline(Context ctx, boolean valNeeded) {

        InlineReturnStatement s = (InlineReturnStatement)clone();

        if (expr != null) {

            s.expr = expr.copyInline(ctx);

        }

        return s;

    }

    /**

     * The cost of inlining this statement

     */

    public int costInline(int thresh, Environment env, Context ctx) {

        return 1 + ((expr != null) ? expr.costInline(thresh, env, ctx) : 0);

    }

    /**

     * Code

     */

    public void code(Environment env, Context ctx, Assembler asm) {

        if (expr != null) {

            expr.codeValue(env, ctx, asm);

        }

        CodeContext destctx = (CodeContext)getDestination(ctx);

        asm.add(where, opc_goto, destctx.breakLabel);

    }

    /**

     * Print

     */

    public void print(PrintStream out, int indent) {

        super.print(out, indent);

        out.print("inline-return");

        if (expr != null) {

            out.print(" ");

            expr.print(out);

        }

        out.print(";");

    }

}