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32 package net.sf.retrotranslator.transformer;
33
34 import java.util.*;
35 import net.sf.retrotranslator.runtime.asm.*;
36 import net.sf.retrotranslator.runtime.asm.signature.*;
37
38
41 class DuplicateInterfacesVisitor extends ClassAdapter {
42
43 private final SystemLogger logger;
44 private final MethodCounter counter;
45
46 public DuplicateInterfacesVisitor(ClassVisitor cv, SystemLogger logger, MethodCounter counter) {
47 super(cv);
48 this.logger = logger;
49 this.counter = counter;
50 }
51
52 public void visit(int version, int access, String  name, String signature, String superName, String [] interfaces) {
53 String [] cleanInterfaces = cleanInterfaces(interfaces);
54 String cleanSignature = cleanInterfaces == interfaces ? signature : cleanSignature(signature);
55 super.visit(version, access, name, cleanSignature, superName, cleanInterfaces);
56 }
57
58 public MethodVisitor visitMethod(int access, String name, String desc, String signature, String [] exceptions) {
59 counter.increment(name, desc);
60 return super.visitMethod(access, name, desc, signature, exceptions);
61 }
62
63 private String [] cleanInterfaces(String [] values) {
64 if (values == null) return null;
65 Set<String > set = new LinkedHashSet<String >();
66 for (String s : values) {
67 if (!set.add(s) && logger != null) {
68 logger.logForFile(Level.VERBOSE, "Repetitive interface name removed: " + s.replace('/', '.'));
69 }
70 }
71 if (set.size() == values.length) return values;
72 return set.toArray(new String [set.size()]);
73 }
74
75 private String cleanSignature(String signature) {
76 if (signature == null) return null;
77 SignatureWriter writer = new SignatureWriter();
78 new SignatureReader(signature).accept(new SignatureCleaningVisitor(writer));
79 return writer.toString();
80 }
81
82 private static class SignatureCleaningVisitor extends SignatureAdapter {
83
84 private Set<String > interfaces = new HashSet<String >();
85
86 public SignatureCleaningVisitor(final SignatureVisitor visitor) {
87 super(visitor);
88 }
89
90 private void addInterface(String signature) {
91 new SignatureReader(signature).acceptType(super.visitInterface());
92 }
93
94 public SignatureVisitor visitInterface() {
95 final SignatureWriter writer = new SignatureWriter();
96 return new SignatureAdapter(writer) {
97
98 private String interfaceName;
99
100 public void visitClassType(String name) {
101 super.visitClassType(name);
102 interfaceName = name;
103 }
104
105 public void visitEnd() {
106 super.visitEnd();
107 if (interfaces.add(interfaceName)) {
108 addInterface(writer.toString());
109 }
110 }
111
112 };
113 }
114
115 }
116
117 }
118 |
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