summaryrefslogtreecommitdiff
path: root/src/main/java/cuchaz/enigma/analysis/EntryReference.java
blob: ad4baf81df254b0c2205a95014a5c83e44f70776 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
/*******************************************************************************
 * Copyright (c) 2015 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * <p>
 * Contributors:
 * Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma.analysis;

import java.util.Arrays;
import java.util.List;

import cuchaz.enigma.mapping.ClassEntry;
import cuchaz.enigma.mapping.ConstructorEntry;
import cuchaz.enigma.mapping.Entry;
import cuchaz.enigma.utils.Utils;

public class EntryReference<E extends Entry, C extends Entry> {

    private static final List<String> ConstructorNonNames = Arrays.asList("this", "super", "static");
    public E entry;
    public C context;

    private boolean sourceName;

    public EntryReference(E entry, String sourceName) {
        this(entry, sourceName, null);
    }

    public EntryReference(E entry, String sourceName, C context) {
        if (entry == null) {
            throw new IllegalArgumentException("Entry cannot be null!");
        }

        this.entry = entry;
        this.context = context;

        this.sourceName = sourceName != null && sourceName.length() > 0;
        if (entry instanceof ConstructorEntry && ConstructorNonNames.contains(sourceName)) {
            this.sourceName = false;
        }
    }

    public EntryReference(E entry, C context, EntryReference<E, C> other) {
        this.entry = entry;
        this.context = context;
        this.sourceName = other.sourceName;
    }

    public ClassEntry getLocationClassEntry() {
        if (context != null) {
            return context.getClassEntry();
        }
        return entry.getClassEntry();
    }

    public boolean isNamed() {
        return this.sourceName;
    }

    public Entry getNameableEntry() {
        if (entry instanceof ConstructorEntry) {
            // renaming a constructor really means renaming the class
            return entry.getClassEntry();
        }
        return entry;
    }

    public String getNamableName() {
        if (getNameableEntry() instanceof ClassEntry) {
            ClassEntry classEntry = (ClassEntry) getNameableEntry();
            if (classEntry.isInnerClass()) {
                // make sure we only rename the inner class name
                return classEntry.getInnermostClassName();
            }
        }

        return getNameableEntry().getName();
    }

    @Override
    public int hashCode() {
        if (context != null) {
            return Utils.combineHashesOrdered(entry.hashCode(), context.hashCode());
        }
        return entry.hashCode();
    }

    @Override
    public boolean equals(Object other) {
        return other instanceof EntryReference && equals((EntryReference<?, ?>) other);
    }

    public boolean equals(EntryReference<?, ?> other) {
        // check entry first
        boolean isEntrySame = entry.equals(other.entry);
        if (!isEntrySame) {
            return false;
        }

        // check caller
        if (context == null && other.context == null) {
            return true;
        } else if (context != null && other.context != null) {
            return context.equals(other.context);
        }
        return false;
    }

    @Override
    public String toString() {
        StringBuilder buf = new StringBuilder();
        buf.append(entry);
        if (context != null) {
            buf.append(" called from ");
            buf.append(context);
        }
        return buf.toString();
    }
}