/*

 * 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.Label;

import sun.tools.asm.Assembler;

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 InlineMethodExpression extends Expression {

    MemberDefinition field;

    Statement body;

    /**

     * Constructor

     */

    InlineMethodExpression(long where, Type type, MemberDefinition field, Statement body) {

        super(INLINEMETHOD, where, type);

        this.field = field;

        this.body = body;

    }

    /**

     * Inline

     */

    public Expression inline(Environment env, Context ctx) {

        body = body.inline(env, new Context(ctx, this));

        if (body == null) {

            return null;

        } else if (body.op == INLINERETURN) {

            Expression expr = ((InlineReturnStatement)body).expr;

            if (expr != null && type.isType(TC_VOID)) {

                throw new CompilerError("value on inline-void return");

            }

            return expr;

        } else {

            return this;

        }

    }

    public Expression inlineValue(Environment env, Context ctx) {

        // When this node was constructed, "copyInline" walked the body

        // with a "valNeeded" flag which made all returns either void

        // or value-bearing.  The type of this node reflects that

        // earlier choice.  The present inline/inlineValue distinction

        // is ignored.

        return inline(env, ctx);

    }

    /**

     * Create a copy of the expression for method inlining

     */

    public Expression copyInline(Context ctx) {

        InlineMethodExpression e = (InlineMethodExpression)clone();

        if (body != null) {

            e.body = body.copyInline(ctx, true);

        }

        return e;

    }

    /**

     * Code

     */

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

        // pop the result if there is any (usually, type is already void)

        super.code(env, ctx, asm);

    }

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

        CodeContext newctx = new CodeContext(ctx, this);

        body.code(env, newctx, asm);

        asm.add(newctx.breakLabel);

    }

    /**

     * Print

     */

    public void print(PrintStream out) {

        out.print("(" + opNames[op] + "\n");

        body.print(out, 1);

        out.print(")");

    }

}