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
|
/*******************************************************************************
* Copyright (c) 2009, 2012 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.flow;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
/**
* A {@link MethodVisitor} with additional methods to get probe insertion
* information.
*/
public interface IMethodProbesVisitor extends MethodVisitor {
/**
* Visits an unconditional probe that should be inserted at the current
* position.
*
* @param probeId
* id of the probe to insert
*/
public void visitProbe(int probeId);
/**
* Visits a jump instruction. A probe with the given id should be inserted
* in a way that it is executed only when the jump to the given label is
* executed.
*
* @param opcode
* the opcode of the type instruction to be visited. This opcode
* is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ,
* IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE,
* IF_ACMPEQ, IF_ACMPNE, GOTO, IFNULL or IFNONNULL.
* @param label
* the operand of the instruction to be visited. This operand is
* a label that designates the instruction to which the jump
* instruction may jump.
* @param probeId
* id of the probe
* @see MethodVisitor#visitJumpInsn(int, Label)
*/
void visitJumpInsnWithProbe(int opcode, Label label, int probeId);
/**
* Visits a zero operand instruction with a probe. This event is used only
* for instructions that terminate the method. Therefore the probe must be
* inserted before the actual instruction.
*
* @param opcode
* the opcode of the instruction to be visited. This opcode is
* either IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN or
* ATHROW.
* @param probeId
* id of the probe
* @see MethodVisitor#visitInsn(int)
*/
void visitInsnWithProbe(int opcode, int probeId);
/**
* Visits a TABLESWITCH instruction with optional probes for each target
* label. Implementations can be optimized based on the fact that the same
* target labels will always have the same probe id within a call to this
* method. The probe id for each label can be obtained with
* {@link LabelInfo#getProbeId(Label)}.
*
* @param min
* the minimum key value.
* @param max
* the maximum key value.
* @param dflt
* beginning of the default handler block.
* @param labels
* beginnings of the handler blocks. <code>labels[i]</code> is
* the beginning of the handler block for the
* <code>min + i</code> key.
* @see MethodVisitor#visitTableSwitchInsn(int, int, Label, Label[])
*/
public void visitTableSwitchInsnWithProbes(int min, int max, Label dflt,
Label[] labels);
/**
* Visits a LOOKUPSWITCH instruction with optional probes for each target
* label. Implementations can be optimized based on the fact that the same
* target labels will always have the same probe id within a call to this
* method. The probe id for each label can be obtained with
* {@link LabelInfo#getProbeId(Label)}.
*
* @param dflt
* beginning of the default handler block.
* @param keys
* the values of the keys.
* @param labels
* beginnings of the handler blocks. <code>labels[i]</code> is
* the beginning of the handler block for the
* <code>keys[i]</code> key.
* @see MethodVisitor#visitLookupSwitchInsn(Label, int[], Label[])
*/
public void visitLookupSwitchInsnWithProbes(Label dflt, int[] keys,
Label[] labels);
}
|
