/* * 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. */publicclass 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(")");    }}