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1 package jester;
2
3 import java.io.*;
4 import java.util.StringTokenizer  ;
5
6 public class RealMutationsList implements MutationsList {
7 public static final String DEFAULT_MUTATIONS_FILENAME = "mutations.cfg";
8
9 private String myFileName;
10 private PrintStream myErrorStream;
11
12 public RealMutationsList(String fileName, PrintStream errorStream) {
13 super();
14 myFileName = fileName;
15 myErrorStream = errorStream;
16 }
17 public RealMutationsList(String fileName) {
18 this(fileName, System.err);
19 }
20 public void visit(BufferedReader aBufferedReader, MutationMaker aMutationMaker) throws IOException, SourceChangeException {
21 String line = aBufferedReader.readLine();
22 while (line != null) {
23 visitLine(line, aMutationMaker);
24 line = aBufferedReader.readLine();
25 }
26 }
27 public void visit(MutationMaker aMutationMaker) throws SourceChangeException {
28 try {
29 InputStream mutationsFile = ClassLoader.getSystemResourceAsStream(myFileName);
30 if (mutationsFile == null) {
31 myErrorStream.println("Warning - could not find "+DEFAULT_MUTATIONS_FILENAME+" so using default mutations.");
32 aMutationMaker.mutate("true", "false");
33 aMutationMaker.mutate("false", "true");
34 aMutationMaker.mutate("if(", "if(true ||");
35 aMutationMaker.mutate("if (", "if (true ||");
36 aMutationMaker.mutate("if(", "if(false &&");
37 aMutationMaker.mutate("if (", "if (false &&");
38 aMutationMaker.mutate("==", "!=");
39 aMutationMaker.mutate("!=", "==");
40 } else {
41 BufferedReader aBufferedReader = new BufferedReader(new InputStreamReader(mutationsFile));
42
43 visit(aBufferedReader, aMutationMaker);
44 }
45 } catch (IOException ex) {
46 throw new SourceChangeException("could not visit mutations " + ex);
47 }
48 }
49 private void visitLine(String line, MutationMaker aMutationMaker) throws SourceChangeException {
50 if(line.length() == 0){
51 return;
52 }
53 String delimiter = line.substring(0, 1);
54 StringTokenizer aStringTokenizer = new StringTokenizer (line.substring(1), delimiter, false);
55 int numberOfItems = 2;
56 String [] strings = new String [numberOfItems];
57 int i = 0;
58 while (i < numberOfItems && aStringTokenizer.hasMoreTokens()) {
59 String s = aStringTokenizer.nextToken();
60 strings[i] = s;
61 i++;
62 }
63 if (i != numberOfItems) {
64 return;
65 }
66 aMutationMaker.mutate(strings[0], strings[1]);
67 }
68 } |
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