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1 package de.loskutov.bco.asm;
2
3 import java.util.BitSet  ;
4 import java.util.HashMap ;
5 import java.util.List ;
6 import java.util.Map ;
7
8 import org.objectweb.asm.AnnotationVisitor;
9 import org.objectweb.asm.Attribute;
10 import org.objectweb.asm.Label;
11 import org.objectweb.asm.MethodAdapter;
12 import org.objectweb.asm.MethodVisitor;
13 import org.objectweb.asm.Opcodes;
14 import org.objectweb.asm.tree.LabelNode;
15 import org.objectweb.asm.tree.MethodNode;
16 import org.objectweb.asm.util.AbstractVisitor;
17
18 import de.loskutov.bco.asm.CommentedClassVisitor.CommentedAnnotationVisitor;
19
20
23
24 public class DecompilerMethodVisitor extends MethodAdapter {
25
26 private String owner;
27
28 private List text;
29
30 private MethodNode meth;
31
32 private LabelNode currentLabel;
33
34 private int currentInsn;
35
36 private Map lineNumbers;
37
38 private final BitSet modes;
39
40 public DecompilerMethodVisitor(final String owner, final MethodNode meth,
41 final MethodVisitor mv, BitSet modes) {
42 super(mv);
43 this.owner = owner;
44 this.modes = modes;
45 this.text = ((AbstractVisitor) mv).getText();
46 this.meth = meth;
47 this.lineNumbers = new HashMap ();
48 }
49
50 public DecompiledMethod getResult(final ClassLoader cl) {
51 return new DecompiledMethod(owner, text, lineNumbers, meth, cl, modes);
52 }
53
54 public AnnotationVisitor visitAnnotationDefault() {
55 AnnotationVisitor annVisitor = super.visitAnnotationDefault();
56 AnnotationVisitor visitor = meth.visitAnnotationDefault();
57 if (annVisitor instanceof CommentedAnnotationVisitor) {
58 CommentedAnnotationVisitor av = (CommentedAnnotationVisitor) annVisitor;
59 av.setAnnotationVisitor(visitor);
60 }
61 return annVisitor;
62 }
63
64 public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
65 AnnotationVisitor annVisitor = super.visitAnnotation(desc, visible);
66 AnnotationVisitor visitor = meth.visitAnnotation(desc, visible);
67 if (annVisitor instanceof CommentedAnnotationVisitor) {
68 CommentedAnnotationVisitor av = (CommentedAnnotationVisitor) annVisitor;
69 av.setAnnotationVisitor(visitor);
70 }
71 return annVisitor;
72 }
73
74 public AnnotationVisitor visitParameterAnnotation(int parameter,
75 String desc, boolean visible) {
76 AnnotationVisitor annVisitor = super.visitParameterAnnotation(
77 parameter, desc, visible);
78 AnnotationVisitor visitor = meth.visitParameterAnnotation(
79 parameter, desc, visible);
80 if (annVisitor instanceof CommentedAnnotationVisitor) {
81 CommentedAnnotationVisitor av = (CommentedAnnotationVisitor) annVisitor;
82 av.setAnnotationVisitor(visitor);
83 }
84 return annVisitor;
85 }
86
87 public void visitCode() {
88 super.visitCode();
89 meth.visitCode();
90 }
91
92 public void visitEnd() {
93 super.visitEnd();
94 meth.visitEnd();
95 }
96
97 public void visitAttribute(Attribute attr) {
98 super.visitAttribute(attr);
99 meth.visitAttribute(attr);
100 }
101
102 public void visitInsn(final int opcode) {
103 addIndex(opcode);
104 super.visitInsn(opcode);
105 meth.visitInsn(opcode);
106 }
107
108 public void visitIntInsn(final int opcode, final int operand) {
109 addIndex(opcode);
110 super.visitIntInsn(opcode, operand);
111 meth.visitIntInsn(opcode, operand);
112 }
113
114 public void visitVarInsn(final int opcode, final int var) {
115 addIndex(opcode);
116 super.visitVarInsn(opcode, var);
117 meth.visitVarInsn(opcode, var);
118 }
119
120 public void visitTypeInsn(final int opcode, final String desc) {
121 addIndex(opcode);
122 super.visitTypeInsn(opcode, desc);
123 meth.visitTypeInsn(opcode, desc);
124 }
125
126 public void visitFieldInsn(final int opcode, final String owner1,
127 final String name, final String desc) {
128 addIndex(opcode);
129 super.visitFieldInsn(opcode, owner1, name, desc);
130 meth.visitFieldInsn(opcode, owner1, name, desc);
131 }
132
133 public void visitMethodInsn(final int opcode, final String owner1,
134 final String name, final String desc) {
135 addIndex(opcode);
136 super.visitMethodInsn(opcode, owner1, name, desc);
137 meth.visitMethodInsn(opcode, owner1, name, desc);
138 }
139
140 public void visitJumpInsn(final int opcode, final Label label) {
141 addIndex(opcode);
142 super.visitJumpInsn(opcode, label);
143 meth.visitJumpInsn(opcode, label);
144 }
145
146 public void visitLabel(final Label label) {
147 super.visitLabel(label);
148 meth.visitLabel(label);
149 currentLabel = (LabelNode) meth.instructions.getLast();
150 addIndex(-1);
151 }
152
153 public void visitLdcInsn(final Object cst) {
154 addIndex(Opcodes.LDC);
155 super.visitLdcInsn(cst);
156 meth.visitLdcInsn(cst);
157 }
158
159 public void visitIincInsn(final int var, final int increment) {
160 addIndex(Opcodes.IINC);
161 super.visitIincInsn(var, increment);
162 meth.visitIincInsn(var, increment);
163 }
164
165 public void visitTableSwitchInsn(final int min, final int max,
166 final Label dflt, final Label[] labels) {
167 addIndex(Opcodes.TABLESWITCH);
168 super.visitTableSwitchInsn(min, max, dflt, labels);
169 meth.visitTableSwitchInsn(min, max, dflt, labels);
170 }
171
172 public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
173 final Label[] labels) {
174 addIndex(Opcodes.LOOKUPSWITCH);
175 super.visitLookupSwitchInsn(dflt, keys, labels);
176 meth.visitLookupSwitchInsn(dflt, keys, labels);
177 }
178
179 public void visitMultiANewArrayInsn(final String desc, final int dims) {
180 addIndex(Opcodes.MULTIANEWARRAY);
181 super.visitMultiANewArrayInsn(desc, dims);
182 meth.visitMultiANewArrayInsn(desc, dims);
183 }
184
185 public void visitTryCatchBlock(final Label start, final Label end,
186 final Label handler, final String type) {
187 super.visitTryCatchBlock(start, end, handler, type);
188 meth.visitTryCatchBlock(start, end, handler, type);
189 }
190
191 public void visitLocalVariable(final String name, final String desc,
192 final String signature, final Label start, final Label end,
193 final int index) {
194 super.visitLocalVariable(name, desc, signature, start, end, index);
197 meth.visitLocalVariable(name, desc, signature, start, end, index);
198 }
199
200 public void visitLineNumber(final int line, final Label start) {
201 lineNumbers.put(start, new Integer (line));
202 super.visitLineNumber(line, start);
203 meth.visitLineNumber(line, start);
204 }
205
206 public void visitMaxs(final int maxStack, final int maxLocals) {
207 super.visitMaxs(maxStack, maxLocals);
208 meth.visitMaxs(maxStack, maxLocals);
209 }
210
211 public void visitFrame(int type, int nLocal, Object [] local, int nStack,
212 Object [] stack) {
213 addIndex(-1);
214 super.visitFrame(type, nLocal, local, nStack, stack);
215 meth.visitFrame(type, nLocal, local, nStack, stack);
216 }
217
218 protected void addIndex(final int opcode) {
219 text.add(new Index(currentLabel, currentInsn++, opcode));
220 }
221 }
222 |
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