-
-
Notifications
You must be signed in to change notification settings - Fork 187
/
InjectorTarget.java
164 lines (142 loc) · 4.84 KB
/
InjectorTarget.java
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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
* This file is part of Mixin, licensed under the MIT License (MIT).
*
* Copyright (c) SpongePowered <https://www.spongepowered.org>
* Copyright (c) contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.spongepowered.asm.mixin.injection.code;
import java.util.HashMap;
import java.util.Map;
import org.spongepowered.asm.lib.tree.AnnotationNode;
import org.spongepowered.asm.lib.tree.InsnList;
import org.spongepowered.asm.lib.tree.MethodNode;
import org.spongepowered.asm.mixin.extensibility.IMixinConfig;
import org.spongepowered.asm.mixin.injection.InjectionPoint;
import org.spongepowered.asm.mixin.injection.struct.Target;
import org.spongepowered.asm.mixin.transformer.meta.MixinMerged;
import org.spongepowered.asm.util.Annotations;
/**
* Couples {@link MethodSlice method slices} to a {@link Target} for injection
* purposes.
*/
public class InjectorTarget {
/**
* Owner injector
*/
private final ISliceContext context;
/**
* Cache of slices
*/
private final Map<String, ReadOnlyInsnList> cache = new HashMap<String, ReadOnlyInsnList>();
/**
* Target method data
*/
private final Target target;
private final String mergedBy;
private final int mergedPriority;
/**
* ctor
*
* @param context owner
* @param target target
*/
public InjectorTarget(ISliceContext context, Target target) {
this.context = context;
this.target = target;
AnnotationNode merged = Annotations.getVisible(target.method, MixinMerged.class);
this.mergedBy = Annotations.<String>getValue(merged, "mixin");
this.mergedPriority = Annotations.<Integer>getValue(merged, "priority", IMixinConfig.DEFAULT_PRIORITY);
}
@Override
public String toString() {
return this.target.toString();
}
/**
* Get the target reference
*/
public Target getTarget() {
return this.target;
}
/**
* Get the target method
*/
public MethodNode getMethod() {
return this.target.method;
}
/**
* Get whether this target method was merged by another mixin
*/
public boolean isMerged() {
return this.mergedBy != null;
}
/**
* Get the name of the mixin which merged this method, returns null for non-
* mixin methods
*/
public String getMergedBy() {
return this.mergedBy;
}
/**
* Get the priority of the mixin which merged this method, or default
* priority for non-mixin methods
*/
public int getMergedPriority() {
return this.mergedPriority;
}
/**
* Get the slice instructions for the specified slice id
*
* @param id slice id
* @return insn slice
*/
public InsnList getSlice(String id) {
ReadOnlyInsnList slice = this.cache.get(id);
if (slice == null) {
MethodSlice sliceInfo = this.context.getSlice(id);
if (sliceInfo != null) {
slice = sliceInfo.getSlice(this.target.method);
} else {
// No slice exists so just wrap the method insns
slice = new ReadOnlyInsnList(this.target.method.instructions);
}
this.cache.put(id, slice);
}
return slice;
}
/**
* Get the slice instructions for the specified injection point
*
* @param injectionPoint injection point to fetch slice for
* @return slice
*/
public InsnList getSlice(InjectionPoint injectionPoint) {
return this.getSlice(injectionPoint.getSlice());
}
/**
* Dispose all cached instruction lists
*/
public void dispose() {
for (ReadOnlyInsnList insns : this.cache.values()) {
insns.dispose();
}
this.cache.clear();
}
}