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
|
/*
* @(#)StateImpl.java
*
* Copyright (C) 2002-2003 Matt Albrecht
* groboclown@users.sourceforge.net
* http://groboutils.sourceforge.net
*
* Part of the GroboUtils package at:
* http://groboutils.sourceforge.net
*
* 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 net.sourceforge.groboutils.mbtf.v1.engine;
import net.sourceforge.groboutils.mbtf.v1.IState;
import net.sourceforge.groboutils.mbtf.v1.IValidate;
import net.sourceforge.groboutils.mbtf.v1.ITransition;
/**
* Immutable IState implementation.
*
* @author Matt Albrecht <a href="mailto:groboclown@users.sourceforge.net">groboclown@users.sourceforge.net</a>
* @version $Date: 2003/02/10 22:52:26 $
* @since June 12, 2002
*/
public class StateImpl implements IState
{
private String name;
private ITransition[] trans;
private IValidate[] validate;
public StateImpl( String name, ITransition[] t, IValidate[] v )
{
if (name == null)
{
throw new IllegalArgumentException("no null name");
}
if (t == null)
{
t = new ITransition[0];
}
else
{
int len = t.length;
ITransition[] tt = new ITransition[ len ];
for (int i = len; --i >= 0;)
{
if (t[i] == null)
{
throw new IllegalArgumentException(
"no nulls allowed in ITransition array (index "+i+")");
}
// else
tt[i] = t[i];
}
t = tt;
}
if (v == null)
{
v = new IValidate[0];
}
else
{
int len = v.length;
IValidate[] vv = new IValidate[ len ];
for (int i = len; --i >= 0;)
{
if (v[i] == null)
{
throw new IllegalArgumentException(
"no nulls allowed in IValidate array (index "+i+")");
}
// else
vv[i] = v[i];
}
v = vv;
}
this.name = name;
this.trans = t;
this.validate = v;
}
/**
* Retrieves the name for the state. This should be unique for
* state-machine assembly purposes, but it does not have to be.
*
* @return a non-null name for this state.
*/
public String getName()
{
return this.name;
}
/**
* Retrieves the list of transitions leading from this state.
*
* @return a non-null list of all transitions from this state. If the
* length of the list is 0, then this is a terminal state.
*/
public ITransition[] getTransitions()
{
int len = this.trans.length;
ITransition t[] = new ITransition[ len ];
System.arraycopy( this.trans, 0, t, 0, len );
return t;
}
/**
* Retrieves the list of all validation instances used to assert that
* the current state is valid.
*
* @return a non-null list of all validation instances for this state.
* An empty list will cause a warning on all but the first
* (initial) state. This list should not include the included
* Transitions' validates.
*/
public IValidate[] getValidates()
{
int len = this.validate.length;
IValidate v[] = new IValidate[ len ];
System.arraycopy( this.validate, 0, v, 0, len );
return v;
}
public String toString()
{
return "[State "+getName()+"]";
}
}
|
