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/Users/lyon/j4p/src/collections/stringswitch/SwitchTest.java
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1 /*
2 * SwitchTest.java
3 *
4 * Created on October 30, 2002, 1:18 PM
5 */
6
7 package collections.stringswitch;
8
9 import utils.Timer;
10
11 /*
12 * SwitchTest.java
13 * Shows how to use the StringSwitch class to use switch based on strings.
14 * Runs performance tests.
15 *
16 * @author Thomas Rowland
17 * @version november 5, 2002
18 */
19
20 public class SwitchTest extends StringSwitch {
21
22 static SwitchTest st;
23 static Timer timer;
24 static int COUNT;
25 static final int ITER = 20;
26
27 // StringSwitch constants
28 public final int QUIT = 0;
29 public final int DIR = 1;
30 public final int RUN = 2;
31 public final int STOP = 3;
32 public final int DEBUG = 4;
33 public final int FWD = 5;
34 public static final int REV = 6;
35
36 /** Creates a new instance of SwitchTest */
37 public SwitchTest() {
38
39 /* Add the String/int pairs to the hashmap.
40 key=String, value=static final int */
41 add("quit", 0);
42 add("dir", 1);
43 add("run", 2);
44 add("stop", 3);
45 add("debug", 4);
46 add("forward", 5);
47 add("reverse", 6);
48 }
49
50 /** Tests StringSwitch */
51 public static void main(String[] args) {
52 if (args.length < 1) {
53 System.err.println("Usage: stringswitch.SwitchTest [COUNT]");
54 System.exit(0);
55 }
56
57 COUNT = Integer.parseInt(args[0]);
58 System.out.println("COUNT = " + COUNT + "\n");
59
60 //st = new SwitchTest();
61 SwitchTest switchtest = new SwitchTest();
62 timer = new Timer();
63
64 /* Test If-Then where match is at bottom */
65 switchtest.runIfThen("reverse");
66
67 /* Test If-Then where match is at top */
68 switchtest.runIfThen("quit");
69
70 /* Test Switch with a (String) */
71 switchtest.runStringSwitch("reverse");
72
73 /* Test Switch with an (int) */
74 switchtest.runIntSwitch(REV);
75
76 }
77
78
79 /**
80 * switch structure that accepts Strings.
81 * @param s the search String
82 */
83 private void doStringSwitch(String s) {
84 switch (getIdForString(s)) {
85 case QUIT:
86 //System.out.print ("QUIT=" + QUIT);
87 break;
88 case DIR:
89 //System.out.print ("DIR=" + DIR);
90 break;
91 case RUN:
92 //System.out.print ("RUN=" + RUN);
93 break;
94 case STOP:
95 //System.out.print ("STOP=" + STOP);
96 break;
97 case DEBUG:
98 //System.out.print ("DEBUG=" + DEBUG);
99 break;
100 case FWD:
101 //System.out.print ("FWD=" + FWD);
102 break;
103 case REV:
104 //System.out.print ("REV=" + REV);
105 break;
106 }
107 }
108
109 /**
110 * Standard switch structure that accepts ints.
111 * @param i the search int
112 */
113 private void doIntSwitch(int i) {
114 switch (i) {
115 case QUIT:
116 //System.out.print ("QUIT=" + QUIT);
117 break;
118 case DIR:
119 //System.out.print ("DIR=" + DIR);
120 break;
121 case RUN:
122 //System.out.print ("RUN=" + RUN);
123 break;
124 case STOP:
125 //System.out.print ("STOP=" + STOP);
126 break;
127 case DEBUG:
128 //System.out.print ("DEBUG=" + DEBUG);
129 break;
130 case FWD:
131 //System.out.print ("FWD=" + FWD);
132 break;
133 case REV:
134 //System.out.print ("REV=" + REV);
135 break;
136 }
137 }
138
139 /**
140 * if-then structure operating on a String.
141 * @param s the search String
142 */
143 private void doIf(String s) {
144 if (s.equals("quit")) {
145 //System.out.print ("QUIT=" + QUIT);
146 } else if (s.equals("dir")) {
147 //System.out.print ("DIR=" + DIR);
148 } else if (s.equals("run")) {
149 //System.out.print ("RUN=" + RUN);
150 } else if (s.equals("stop")) {
151 //System.out.print ("STOP=" + STOP);
152 } else if (s.equals("debug")) {
153 //System.out.print ("DEBUG=" + DEBUG);
154 } else if (s.equals("forward")) {
155 //System.out.print ("FWD=" + FWD);
156 } else if (s.equals("reverse")) {
157 //System.out.print ("REV=" + REV);
158 }
159 }
160
161 private void runIfThen(String svalue) {
162 System.out.println("\nTesting if-then with a String (Bottom)");
163 for (int i = 0; i < ITER; i++) {
164 timer.clear();
165 timer.start();
166 for (int j = 0; j < COUNT; j++) {
167 st.doIf(svalue);
168 }
169 timer.stop();
170 System.out.println(timer.getElapsedTime());
171 }
172 }
173
174 private void runIntSwitch(int ivalue) {
175 System.out.println("\nTesting Switch with an int");
176 for (int i = 0; i < ITER; i++) {
177 timer.clear();
178 timer.start();
179 for (int j = 0; j < COUNT; j++) {
180 st.doIntSwitch(ivalue);
181 }
182 timer.stop();
183 System.out.println(timer.getElapsedTime());
184 }
185 }
186
187 private void runStringSwitch(String svalue) {
188 System.out.println("\nTesting Switch with a String");
189 for (int i = 0; i < ITER; i++) {
190 timer.clear();
191 timer.start();
192 for (int j = 0; j < COUNT; j++) {
193 st.doStringSwitch(svalue);
194 }
195 timer.stop();
196 System.out.println(timer.getElapsedTime());
197 }
198 }
199
200 }
201
202