jtulach@144
|
1 |
/*
|
jtulach@144
|
2 |
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
|
jtulach@144
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
jtulach@144
|
4 |
*
|
jtulach@144
|
5 |
* This code is free software; you can redistribute it and/or modify it
|
jtulach@144
|
6 |
* under the terms of the GNU General Public License version 2 only, as
|
jtulach@144
|
7 |
* published by the Free Software Foundation. Oracle designates this
|
jtulach@144
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
jtulach@144
|
9 |
* by Oracle in the LICENSE file that accompanied this code.
|
jtulach@144
|
10 |
*
|
jtulach@144
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT
|
jtulach@144
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
jtulach@144
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
jtulach@144
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that
|
jtulach@144
|
15 |
* accompanied this code).
|
jtulach@144
|
16 |
*
|
jtulach@144
|
17 |
* You should have received a copy of the GNU General Public License version
|
jtulach@144
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation,
|
jtulach@144
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
jtulach@144
|
20 |
*
|
jtulach@144
|
21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
jtulach@144
|
22 |
* or visit www.oracle.com if you need additional information or have any
|
jtulach@144
|
23 |
* questions.
|
jtulach@144
|
24 |
*/
|
jtulach@144
|
25 |
|
jtulach@144
|
26 |
|
jtulach@167
|
27 |
package org.apidesign.javap;
|
jtulach@144
|
28 |
|
jtulach@144
|
29 |
import java.io.*;
|
jtulach@144
|
30 |
|
jtulach@167
|
31 |
import static org.apidesign.javap.RuntimeConstants.*;
|
jtulach@144
|
32 |
|
jtulach@144
|
33 |
/* represents one entry of StackMapTable attribute
|
jtulach@144
|
34 |
*/
|
lubomir@221
|
35 |
abstract class StackMapTableData {
|
jtulach@144
|
36 |
final int frameType;
|
jtulach@144
|
37 |
int offsetDelta;
|
jtulach@144
|
38 |
|
jtulach@144
|
39 |
StackMapTableData(int frameType) {
|
jtulach@144
|
40 |
this.frameType = frameType;
|
jtulach@144
|
41 |
}
|
jtulach@144
|
42 |
|
lubomir@281
|
43 |
abstract void applyTo(TypeArray localTypes, TypeArray stackTypes);
|
lubomir@281
|
44 |
|
lubomir@281
|
45 |
protected static String toString(
|
lubomir@281
|
46 |
final String frameType,
|
lubomir@281
|
47 |
final int offset,
|
lubomir@281
|
48 |
final int[] localTypes,
|
lubomir@281
|
49 |
final int[] stackTypes) {
|
lubomir@281
|
50 |
final StringBuilder sb = new StringBuilder(frameType);
|
lubomir@281
|
51 |
|
lubomir@281
|
52 |
sb.append("(off: +").append(offset);
|
lubomir@281
|
53 |
if (localTypes != null) {
|
lubomir@281
|
54 |
sb.append(", locals: ");
|
lubomir@281
|
55 |
appendTypes(sb, localTypes);
|
lubomir@281
|
56 |
}
|
lubomir@281
|
57 |
if (stackTypes != null) {
|
lubomir@281
|
58 |
sb.append(", stack: ");
|
lubomir@281
|
59 |
appendTypes(sb, stackTypes);
|
lubomir@281
|
60 |
}
|
lubomir@281
|
61 |
sb.append(')');
|
lubomir@281
|
62 |
|
lubomir@281
|
63 |
return sb.toString();
|
lubomir@281
|
64 |
}
|
lubomir@281
|
65 |
|
lubomir@281
|
66 |
private static void appendTypes(final StringBuilder sb, final int[] types) {
|
lubomir@281
|
67 |
sb.append('[');
|
lubomir@281
|
68 |
if (types.length > 0) {
|
lubomir@307
|
69 |
sb.append(TypeArray.typeString(types[0]));
|
lubomir@281
|
70 |
for (int i = 1; i < types.length; ++i) {
|
lubomir@281
|
71 |
sb.append(", ");
|
lubomir@307
|
72 |
sb.append(TypeArray.typeString(types[i]));
|
lubomir@281
|
73 |
}
|
lubomir@281
|
74 |
}
|
lubomir@281
|
75 |
sb.append(']');
|
lubomir@281
|
76 |
}
|
lubomir@281
|
77 |
|
jtulach@144
|
78 |
static class SameFrame extends StackMapTableData {
|
jtulach@144
|
79 |
SameFrame(int frameType, int offsetDelta) {
|
jtulach@144
|
80 |
super(frameType);
|
jtulach@144
|
81 |
this.offsetDelta = offsetDelta;
|
jtulach@144
|
82 |
}
|
lubomir@221
|
83 |
|
lubomir@221
|
84 |
@Override
|
lubomir@281
|
85 |
void applyTo(TypeArray localTypes, TypeArray stackTypes) {
|
lubomir@281
|
86 |
stackTypes.clear();
|
lubomir@221
|
87 |
}
|
lubomir@221
|
88 |
|
lubomir@221
|
89 |
@Override
|
lubomir@221
|
90 |
public String toString() {
|
lubomir@281
|
91 |
return toString("SAME" + ((frameType == SAME_FRAME_EXTENDED)
|
lubomir@281
|
92 |
? "_FRAME_EXTENDED" : ""),
|
lubomir@281
|
93 |
offsetDelta,
|
lubomir@281
|
94 |
null, null);
|
lubomir@221
|
95 |
}
|
jtulach@144
|
96 |
}
|
jtulach@144
|
97 |
|
jtulach@144
|
98 |
static class SameLocals1StackItem extends StackMapTableData {
|
jtulach@144
|
99 |
final int[] stack;
|
jtulach@144
|
100 |
SameLocals1StackItem(int frameType, int offsetDelta, int[] stack) {
|
jtulach@144
|
101 |
super(frameType);
|
jtulach@144
|
102 |
this.offsetDelta = offsetDelta;
|
jtulach@144
|
103 |
this.stack = stack;
|
jtulach@144
|
104 |
}
|
lubomir@221
|
105 |
|
lubomir@221
|
106 |
@Override
|
lubomir@281
|
107 |
void applyTo(TypeArray localTypes, TypeArray stackTypes) {
|
lubomir@281
|
108 |
stackTypes.setAll(stack);
|
lubomir@221
|
109 |
}
|
lubomir@221
|
110 |
|
lubomir@221
|
111 |
@Override
|
lubomir@221
|
112 |
public String toString() {
|
lubomir@281
|
113 |
return toString(
|
lubomir@281
|
114 |
"SAME_LOCALS_1_STACK_ITEM"
|
lubomir@281
|
115 |
+ ((frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED)
|
lubomir@281
|
116 |
? "_EXTENDED" : ""),
|
lubomir@281
|
117 |
offsetDelta,
|
lubomir@281
|
118 |
null, stack);
|
lubomir@221
|
119 |
}
|
jtulach@144
|
120 |
}
|
jtulach@144
|
121 |
|
jtulach@144
|
122 |
static class ChopFrame extends StackMapTableData {
|
jtulach@144
|
123 |
ChopFrame(int frameType, int offsetDelta) {
|
jtulach@144
|
124 |
super(frameType);
|
jtulach@144
|
125 |
this.offsetDelta = offsetDelta;
|
jtulach@144
|
126 |
}
|
lubomir@221
|
127 |
|
lubomir@221
|
128 |
@Override
|
lubomir@281
|
129 |
void applyTo(TypeArray localTypes, TypeArray stackTypes) {
|
lubomir@281
|
130 |
localTypes.setSize(localTypes.getSize()
|
lubomir@281
|
131 |
- (SAME_FRAME_EXTENDED - frameType));
|
lubomir@281
|
132 |
stackTypes.clear();
|
lubomir@221
|
133 |
}
|
lubomir@221
|
134 |
|
lubomir@221
|
135 |
@Override
|
lubomir@221
|
136 |
public String toString() {
|
lubomir@281
|
137 |
return toString("CHOP", offsetDelta, null, null);
|
lubomir@221
|
138 |
}
|
jtulach@144
|
139 |
}
|
jtulach@144
|
140 |
|
jtulach@144
|
141 |
static class AppendFrame extends StackMapTableData {
|
jtulach@144
|
142 |
final int[] locals;
|
jtulach@144
|
143 |
AppendFrame(int frameType, int offsetDelta, int[] locals) {
|
jtulach@144
|
144 |
super(frameType);
|
jtulach@144
|
145 |
this.offsetDelta = offsetDelta;
|
jtulach@144
|
146 |
this.locals = locals;
|
jtulach@144
|
147 |
}
|
lubomir@221
|
148 |
|
lubomir@221
|
149 |
@Override
|
lubomir@281
|
150 |
void applyTo(TypeArray localTypes, TypeArray stackTypes) {
|
lubomir@281
|
151 |
localTypes.addAll(locals);
|
lubomir@281
|
152 |
stackTypes.clear();
|
lubomir@221
|
153 |
}
|
lubomir@221
|
154 |
|
lubomir@221
|
155 |
@Override
|
lubomir@221
|
156 |
public String toString() {
|
lubomir@281
|
157 |
return toString("APPEND", offsetDelta, locals, null);
|
lubomir@221
|
158 |
}
|
jtulach@144
|
159 |
}
|
jtulach@144
|
160 |
|
jtulach@144
|
161 |
static class FullFrame extends StackMapTableData {
|
jtulach@144
|
162 |
final int[] locals;
|
jtulach@144
|
163 |
final int[] stack;
|
jtulach@144
|
164 |
FullFrame(int offsetDelta, int[] locals, int[] stack) {
|
jtulach@144
|
165 |
super(FULL_FRAME);
|
jtulach@144
|
166 |
this.offsetDelta = offsetDelta;
|
jtulach@144
|
167 |
this.locals = locals;
|
jtulach@144
|
168 |
this.stack = stack;
|
jtulach@144
|
169 |
}
|
lubomir@221
|
170 |
|
lubomir@221
|
171 |
@Override
|
lubomir@281
|
172 |
void applyTo(TypeArray localTypes, TypeArray stackTypes) {
|
lubomir@281
|
173 |
localTypes.setAll(locals);
|
lubomir@281
|
174 |
stackTypes.setAll(stack);
|
lubomir@221
|
175 |
}
|
lubomir@221
|
176 |
|
lubomir@221
|
177 |
@Override
|
lubomir@221
|
178 |
public String toString() {
|
lubomir@281
|
179 |
return toString("FULL", offsetDelta, locals, stack);
|
lubomir@221
|
180 |
}
|
jtulach@144
|
181 |
}
|
jtulach@144
|
182 |
|
jtulach@144
|
183 |
static StackMapTableData getInstance(DataInputStream in, MethodData method)
|
jtulach@144
|
184 |
throws IOException {
|
jtulach@144
|
185 |
int frameType = in.readUnsignedByte();
|
jtulach@144
|
186 |
|
jtulach@144
|
187 |
if (frameType < SAME_FRAME_BOUND) {
|
jtulach@144
|
188 |
// same_frame
|
jtulach@144
|
189 |
return new SameFrame(frameType, frameType);
|
jtulach@144
|
190 |
} else if (SAME_FRAME_BOUND <= frameType && frameType < SAME_LOCALS_1_STACK_ITEM_BOUND) {
|
jtulach@144
|
191 |
// same_locals_1_stack_item_frame
|
jtulach@144
|
192 |
// read additional single stack element
|
jtulach@144
|
193 |
return new SameLocals1StackItem(frameType,
|
jtulach@144
|
194 |
(frameType - SAME_FRAME_BOUND),
|
jtulach@144
|
195 |
StackMapData.readTypeArray(in, 1, method));
|
jtulach@144
|
196 |
} else if (frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
|
jtulach@144
|
197 |
// same_locals_1_stack_item_extended
|
jtulach@144
|
198 |
return new SameLocals1StackItem(frameType,
|
jtulach@144
|
199 |
in.readUnsignedShort(),
|
jtulach@144
|
200 |
StackMapData.readTypeArray(in, 1, method));
|
jtulach@144
|
201 |
} else if (SAME_LOCALS_1_STACK_ITEM_EXTENDED < frameType && frameType < SAME_FRAME_EXTENDED) {
|
jtulach@144
|
202 |
// chop_frame or same_frame_extended
|
jtulach@144
|
203 |
return new ChopFrame(frameType, in.readUnsignedShort());
|
jtulach@144
|
204 |
} else if (frameType == SAME_FRAME_EXTENDED) {
|
jtulach@144
|
205 |
// chop_frame or same_frame_extended
|
jtulach@144
|
206 |
return new SameFrame(frameType, in.readUnsignedShort());
|
jtulach@144
|
207 |
} else if (SAME_FRAME_EXTENDED < frameType && frameType < FULL_FRAME) {
|
jtulach@144
|
208 |
// append_frame
|
jtulach@144
|
209 |
return new AppendFrame(frameType, in.readUnsignedShort(),
|
jtulach@144
|
210 |
StackMapData.readTypeArray(in, frameType - SAME_FRAME_EXTENDED, method));
|
jtulach@144
|
211 |
} else if (frameType == FULL_FRAME) {
|
jtulach@144
|
212 |
// full_frame
|
jtulach@144
|
213 |
int offsetDelta = in.readUnsignedShort();
|
jtulach@144
|
214 |
int locals_size = in.readUnsignedShort();
|
jtulach@144
|
215 |
int[] locals = StackMapData.readTypeArray(in, locals_size, method);
|
jtulach@144
|
216 |
int stack_size = in.readUnsignedShort();
|
jtulach@144
|
217 |
int[] stack = StackMapData.readTypeArray(in, stack_size, method);
|
jtulach@144
|
218 |
return new FullFrame(offsetDelta, locals, stack);
|
jtulach@144
|
219 |
} else {
|
jtulach@144
|
220 |
throw new ClassFormatError("unrecognized frame_type in StackMapTable");
|
jtulach@144
|
221 |
}
|
jtulach@144
|
222 |
}
|
jtulach@144
|
223 |
}
|