1/*
2 * Copyright (c) 2015, 2015, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.nodeinfo;
24
25import java.lang.annotation.ElementType;
26import java.lang.annotation.Inherited;
27import java.lang.annotation.Retention;
28import java.lang.annotation.RetentionPolicy;
29import java.lang.annotation.Target;
30
31/**
32 * Marker type for describing node inputs in snippets that are not of type {@link InputType#Value}.
33 */
34public abstract class StructuralInput {
35
36    private StructuralInput() {
37        throw new Error("Illegal instance of StructuralInput. This class should be used in snippets only.");
38    }
39
40    @Retention(RetentionPolicy.RUNTIME)
41    @Target(ElementType.TYPE)
42    @Inherited
43    public @interface MarkerType {
44        InputType value();
45    }
46
47    /**
48     * Marker type for {@link InputType#Memory} edges in snippets.
49     */
50    @MarkerType(InputType.Memory)
51    public abstract static class Memory extends StructuralInput {
52    }
53
54    /**
55     * Marker type for {@link InputType#Condition} edges in snippets.
56     */
57    @MarkerType(InputType.Condition)
58    public abstract static class Condition extends StructuralInput {
59    }
60
61    /**
62     * Marker type for {@link InputType#State} edges in snippets.
63     */
64    @MarkerType(InputType.State)
65    public abstract static class State extends StructuralInput {
66    }
67
68    /**
69     * Marker type for {@link InputType#Guard} edges in snippets.
70     */
71    @MarkerType(InputType.Guard)
72    public abstract static class Guard extends StructuralInput {
73    }
74
75    /**
76     * Marker type for {@link InputType#Anchor} edges in snippets.
77     */
78    @MarkerType(InputType.Anchor)
79    public abstract static class Anchor extends StructuralInput {
80    }
81
82    /**
83     * Marker type for {@link InputType#Association} edges in snippets.
84     */
85    @MarkerType(InputType.Association)
86    public abstract static class Association extends StructuralInput {
87    }
88
89    /**
90     * Marker type for {@link InputType#Extension} edges in snippets.
91     */
92    @MarkerType(InputType.Extension)
93    public abstract static class Extension extends StructuralInput {
94    }
95}
96