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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*******************************************************************************
* Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.analysis;
import org.jacoco.core.internal.flow.IFrame;
import org.jacoco.core.internal.flow.LabelInfo;
import org.jacoco.core.internal.flow.MethodProbesVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.tree.TryCatchBlockNode;
/**
* A {@link MethodProbesVisitor} that builds the {@link Instruction}s of a
* method to calculate the detailed execution status.
*/
public class MethodAnalyzer extends MethodProbesVisitor {
private final InstructionsBuilder builder;
/** Current node of the ASM tree API */
private AbstractInsnNode currentNode;
/**
* New instance that uses the given builder.
*/
MethodAnalyzer(final InstructionsBuilder builder) {
this.builder = builder;
}
@Override
public void accept(final MethodNode methodNode,
final MethodVisitor methodVisitor) {
methodVisitor.visitCode();
for (final TryCatchBlockNode n : methodNode.tryCatchBlocks) {
n.accept(methodVisitor);
}
currentNode = methodNode.instructions.getFirst();
while (currentNode != null) {
currentNode.accept(methodVisitor);
currentNode = currentNode.getNext();
}
methodVisitor.visitEnd();
}
@Override
public void visitLabel(final Label label) {
builder.addLabel(label);
}
@Override
public void visitLineNumber(final int line, final Label start) {
builder.setCurrentLine(line);
}
@Override
public void visitInsn(final int opcode) {
builder.addInstruction(currentNode);
}
@Override
public void visitIntInsn(final int opcode, final int operand) {
builder.addInstruction(currentNode);
}
@Override
public void visitVarInsn(final int opcode, final int var) {
builder.addInstruction(currentNode);
}
@Override
public void visitTypeInsn(final int opcode, final String type) {
builder.addInstruction(currentNode);
}
@Override
public void visitFieldInsn(final int opcode, final String owner,
final String name, final String desc) {
builder.addInstruction(currentNode);
}
@Override
public void visitMethodInsn(final int opcode, final String owner,
final String name, final String desc, final boolean itf) {
builder.addInstruction(currentNode);
}
@Override
public void visitInvokeDynamicInsn(final String name, final String desc,
final Handle bsm, final Object... bsmArgs) {
builder.addInstruction(currentNode);
}
@Override
public void visitJumpInsn(final int opcode, final Label label) {
builder.addInstruction(currentNode);
builder.addJump(label, 1);
}
@Override
public void visitLdcInsn(final Object cst) {
builder.addInstruction(currentNode);
}
@Override
public void visitIincInsn(final int var, final int increment) {
builder.addInstruction(currentNode);
}
@Override
public void visitTableSwitchInsn(final int min, final int max,
final Label dflt, final Label... labels) {
visitSwitchInsn(dflt, labels);
}
@Override
public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
final Label[] labels) {
visitSwitchInsn(dflt, labels);
}
private void visitSwitchInsn(final Label dflt, final Label[] labels) {
builder.addInstruction(currentNode);
LabelInfo.resetDone(labels);
int branch = 0;
builder.addJump(dflt, branch);
LabelInfo.setDone(dflt);
for (final Label l : labels) {
if (!LabelInfo.isDone(l)) {
branch++;
builder.addJump(l, branch);
LabelInfo.setDone(l);
}
}
}
@Override
public void visitMultiANewArrayInsn(final String desc, final int dims) {
builder.addInstruction(currentNode);
}
@Override
public void visitProbe(final int probeId) {
builder.addProbe(probeId, 0);
builder.noSuccessor();
}
@Override
public void visitJumpInsnWithProbe(final int opcode, final Label label,
final int probeId, final IFrame frame) {
builder.addInstruction(currentNode);
builder.addProbe(probeId, 1);
}
@Override
public void visitInsnWithProbe(final int opcode, final int probeId) {
builder.addInstruction(currentNode);
builder.addProbe(probeId, 0);
}
@Override
public void visitTableSwitchInsnWithProbes(final int min, final int max,
final Label dflt, final Label[] labels, final IFrame frame) {
visitSwitchInsnWithProbes(dflt, labels);
}
@Override
public void visitLookupSwitchInsnWithProbes(final Label dflt,
final int[] keys, final Label[] labels, final IFrame frame) {
visitSwitchInsnWithProbes(dflt, labels);
}
private void visitSwitchInsnWithProbes(final Label dflt,
final Label[] labels) {
builder.addInstruction(currentNode);
LabelInfo.resetDone(dflt);
LabelInfo.resetDone(labels);
int branch = 0;
visitSwitchTarget(dflt, branch);
for (final Label l : labels) {
branch++;
visitSwitchTarget(l, branch);
}
}
private void visitSwitchTarget(final Label label, final int branch) {
final int id = LabelInfo.getProbeId(label);
if (!LabelInfo.isDone(label)) {
if (id == LabelInfo.NO_PROBE) {
builder.addJump(label, branch);
} else {
builder.addProbe(id, branch);
}
LabelInfo.setDone(label);
}
}
}
|
