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1
30
31 package oracle.toplink.libraries.asm.util;
32
33 import oracle.toplink.libraries.asm.Label;
34 import oracle.toplink.libraries.asm.Attribute;
35 import oracle.toplink.libraries.asm.util.attrs.ASMifiable;
36
37 import java.util.HashMap  ;
38
39
45
46 public class ASMifierCodeVisitor extends PrintCodeVisitor {
47
48
51
52 private final HashMap labelNames;
53
54
57
58 public ASMifierCodeVisitor () {
59 this.labelNames = new HashMap ();
60 }
61
62 public void printInsn (final int opcode) {
63 buf.append("cv.visitInsn(").
64 append(OPCODES[opcode]).
65 append(");\n");
66 }
67
68 public void printIntInsn (final int opcode, final int operand) {
69 buf.append("cv.visitIntInsn(").
70 append(OPCODES[opcode]).
71 append(", ").
72 append(operand).
73 append(");\n");
74 }
75
76 public void printVarInsn (final int opcode, final int var) {
77 buf.append("cv.visitVarInsn(").
78 append(OPCODES[opcode]).
79 append(", ").
80 append(var).
81 append(");\n");
82 }
83
84 public void printTypeInsn (final int opcode, final String desc) {
85 buf.append("cv.visitTypeInsn(").
86 append(OPCODES[opcode]).
87 append(", ");
88 ASMifierClassVisitor.appendConstant(buf, desc);
89 buf.append(");\n");
90 }
91
92 public void printFieldInsn (
93 final int opcode,
94 final String owner,
95 final String name,
96 final String desc)
97 {
98 buf.append("cv.visitFieldInsn(")
99 .append(OPCODES[opcode])
100 .append(", ");
101 ASMifierClassVisitor.appendConstant(buf, owner);
102 buf.append(", ");
103 ASMifierClassVisitor.appendConstant(buf, name);
104 buf.append(", ");
105 ASMifierClassVisitor.appendConstant(buf, desc);
106 buf.append(");\n");
107 }
108
109 public void printMethodInsn (
110 final int opcode,
111 final String owner,
112 final String name,
113 final String desc)
114 {
115 buf.append("cv.visitMethodInsn(")
116 .append(OPCODES[opcode])
117 .append(", ");
118 ASMifierClassVisitor.appendConstant(buf, owner);
119 buf.append(", ");
120 ASMifierClassVisitor.appendConstant(buf, name);
121 buf.append(", ");
122 ASMifierClassVisitor.appendConstant(buf, desc);
123 buf.append(");\n");
124 }
125
126 public void printJumpInsn (final int opcode, final Label label) {
127 declareLabel(label);
128 buf.append("cv.visitJumpInsn(")
129 .append(OPCODES[opcode])
130 .append(", ");
131 appendLabel(label);
132 buf.append(");\n");
133 }
134
135 public void printLabel (final Label label) {
136 declareLabel(label);
137 buf.append("cv.visitLabel(");
138 appendLabel(label);
139 buf.append(");\n");
140 }
141
142 public void printLdcInsn (final Object cst) {
143 buf.append("cv.visitLdcInsn(");
144 ASMifierClassVisitor.appendConstant(buf, cst);
145 buf.append(");\n");
146 }
147
148 public void printIincInsn (final int var, final int increment) {
149 buf.append("cv.visitIincInsn(")
150 .append(var)
151 .append(", ")
152 .append(increment)
153 .append(");\n");
154 }
155
156 public void printTableSwitchInsn (
157 final int min,
158 final int max,
159 final Label dflt,
160 final Label labels[])
161 {
162 for (int i = 0; i < labels.length; ++i) {
163 declareLabel(labels[i]);
164 }
165 declareLabel(dflt);
166
167 buf.append("cv.visitTableSwitchInsn(")
168 .append(min)
169 .append(", ")
170 .append(max)
171 .append(", ");
172 appendLabel(dflt);
173 buf.append(", new Label[] {");
174 for (int i = 0; i < labels.length; ++i) {
175 buf.append(i == 0 ? " " : ", ");
176 appendLabel(labels[i]);
177 }
178 buf.append(" });\n");
179 }
180
181 public void printLookupSwitchInsn (
182 final Label dflt,
183 final int keys[],
184 final Label labels[])
185 {
186 for (int i = 0; i < labels.length; ++i) {
187 declareLabel(labels[i]);
188 }
189 declareLabel(dflt);
190
191 buf.append("cv.visitLookupSwitchInsn(");
192 appendLabel(dflt);
193 buf.append(", new int[] {");
194 for (int i = 0; i < keys.length; ++i) {
195 buf.append(i == 0 ? " " : ", ").append(keys[i]);
196 }
197 buf.append(" }, new Label[] {");
198 for (int i = 0; i < labels.length; ++i) {
199 buf.append(i == 0 ? " " : ", ");
200 appendLabel(labels[i]);
201 }
202 buf.append(" });\n");
203 }
204
205 public void printMultiANewArrayInsn (final String desc, final int dims) {
206 buf.append("cv.visitMultiANewArrayInsn(");
207 ASMifierClassVisitor.appendConstant(buf, desc);
208 buf.append(", ")
209 .append(dims)
210 .append(");\n");
211 }
212
213 public void printTryCatchBlock (
214 final Label start,
215 final Label end,
216 final Label handler,
217 final String type)
218 {
219 buf.append("cv.visitTryCatchBlock(");
220 appendLabel(start);
221 buf.append(", ");
222 appendLabel(end);
223 buf.append(", ");
224 appendLabel(handler);
225 buf.append(", ");
226 ASMifierClassVisitor.appendConstant(buf, type);
227 buf.append(");\n");
228 }
229
230 public void printMaxs (final int maxStack, final int maxLocals) {
231 buf.append("cv.visitMaxs(")
232 .append(maxStack)
233 .append(", ")
234 .append(maxLocals)
235 .append(");\n");
236 }
237
238 public void printLocalVariable (
239 final String name,
240 final String desc,
241 final Label start,
242 final Label end,
243 final int index)
244 {
245 buf.append("cv.visitLocalVariable(");
246 ASMifierClassVisitor.appendConstant(buf, name);
247 buf.append(", ");
248 ASMifierClassVisitor.appendConstant(buf, desc);
249 buf.append(", ");
250 appendLabel(start);
251 buf.append(", ");
252 appendLabel(end);
253 buf.append(", ").append(index).append(");\n");
254 }
255
256 public void printLineNumber (final int line, final Label start) {
257 buf.append("cv.visitLineNumber(")
258 .append(line)
259 .append(", ");
260 appendLabel(start);
261 buf.append(");\n");
262 }
263
264 public void printAttribute (final Attribute attr) {
265 if (attr instanceof ASMifiable) {
266 buf.append("// CODE ATTRIBUTE\n");
267 ((ASMifiable)attr).asmify(buf, "cv", labelNames);
268 } else {
269 buf.append("// WARNING! skipped a non standard code attribute of type \"");
270 buf.append(attr.type).append("\"\n");
271 }
272 }
273
274
281
282 private void declareLabel (final Label l) {
283 String name = (String )labelNames.get(l);
284 if (name == null) {
285 name = "l" + labelNames.size();
286 labelNames.put(l, name);
287 buf.append("Label ")
288 .append(name)
289 .append(" = new Label();\n");
290 }
291 }
292
293
300
301 private void appendLabel (final Label l) {
302 buf.append((String )labelNames.get(l));
303 }
304 }
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