1/*
2 * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package sun.tools.tree;
27
28import sun.tools.java.*;
29import sun.tools.asm.Label;
30import sun.tools.asm.Assembler;
31import java.io.PrintStream;
32import java.util.Vector;
33
34/**
35 * WARNING: The contents of this source file are not part of any
36 * supported API.  Code that depends on them does so at its own risk:
37 * they are subject to change or removal without notice.
38 */
39public
40class InlineNewInstanceExpression extends Expression {
41    MemberDefinition field;
42    Statement body;
43
44    /**
45     * Constructor
46     */
47    InlineNewInstanceExpression(long where, Type type, MemberDefinition field, Statement body) {
48        super(INLINENEWINSTANCE, where, type);
49        this.field = field;
50        this.body = body;
51    }
52    /**
53     * Inline
54     */
55    public Expression inline(Environment env, Context ctx) {
56        return inlineValue(env, ctx);
57    }
58    public Expression inlineValue(Environment env, Context ctx) {
59        if (body != null) {
60            LocalMember v = (LocalMember)field.getArguments().elementAt(0);
61            Context newctx = new Context(ctx, this);
62            newctx.declare(env, v);
63            body = body.inline(env, newctx);
64        }
65        if ((body != null) && (body.op == INLINERETURN)) {
66            body = null;
67        }
68        return this;
69    }
70
71    /**
72     * Create a copy of the expression for method inlining
73     */
74    public Expression copyInline(Context ctx) {
75        InlineNewInstanceExpression e = (InlineNewInstanceExpression)clone();
76        e.body = body.copyInline(ctx, true);
77        return e;
78    }
79
80    /**
81     * Code
82     */
83    public void code(Environment env, Context ctx, Assembler asm) {
84        codeCommon(env, ctx, asm, false);
85    }
86    public void codeValue(Environment env, Context ctx, Assembler asm) {
87        codeCommon(env, ctx, asm, true);
88    }
89    private void codeCommon(Environment env, Context ctx, Assembler asm,
90                            boolean forValue) {
91        asm.add(where, opc_new, field.getClassDeclaration());
92        if (body != null) {
93            LocalMember v = (LocalMember)field.getArguments().elementAt(0);
94            CodeContext newctx = new CodeContext(ctx, this);
95            newctx.declare(env, v);
96            asm.add(where, opc_astore, v.number);
97            body.code(env, newctx, asm);
98            asm.add(newctx.breakLabel);
99            if (forValue) {
100                asm.add(where, opc_aload, v.number);
101            }
102        }
103    }
104
105    /**
106     * Print
107     */
108    public void print(PrintStream out) {
109        LocalMember v = (LocalMember)field.getArguments().elementAt(0);
110        out.println("(" + opNames[op] + "#" + v.hashCode() + "=" + field.hashCode());
111        if (body != null) {
112            body.print(out, 1);
113        } else {
114            out.print("<empty>");
115        }
116        out.print(")");
117    }
118}
119