1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 /*
26 * This file is available under and governed by the GNU General Public
27 * License version 2 only, as published by the Free Software Foundation.
28 * However, the following notice accompanied the original version of this
29 * file:
30 *
31 * ASM: a very small and fast Java bytecode manipulation framework
32 * Copyright (c) 2000-2011 INRIA, France Telecom
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. Neither the name of the copyright holders nor the names of its
44 * contributors may be used to endorse or promote products derived from
45 * this software without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
48 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
51 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
57 * THE POSSIBILITY OF SUCH DAMAGE.
58 */
59 package jdk.internal.org.objectweb.asm;
60
61 /**
62 * A visitor to visit a Java method. The methods of this class must be
63 * called in the following order: [ <tt>visitAnnotationDefault</tt> ] (
64 * <tt>visitAnnotation</tt> | <tt>visitParameterAnnotation</tt> |
65 * <tt>visitAttribute</tt> )* [ <tt>visitCode</tt> ( <tt>visitFrame</tt> |
66 * <tt>visit<i>X</i>Insn</tt> | <tt>visitLabel</tt> | <tt>visitTryCatchBlock</tt> |
67 * <tt>visitLocalVariable</tt> | <tt>visitLineNumber</tt> )* <tt>visitMaxs</tt> ]
68 * <tt>visitEnd</tt>. In addition, the <tt>visit<i>X</i>Insn</tt>
69 * and <tt>visitLabel</tt> methods must be called in the sequential order of
70 * the bytecode instructions of the visited code, <tt>visitTryCatchBlock</tt>
71 * must be called <i>before</i> the labels passed as arguments have been
72 * visited, and the <tt>visitLocalVariable</tt> and <tt>visitLineNumber</tt>
73 * methods must be called <i>after</i> the labels passed as arguments have been
74 * visited.
75 *
76 * @author Eric Bruneton
77 */
78 public abstract class MethodVisitor {
79
80 /**
81 * The ASM API version implemented by this visitor. The value of this field
82 * must be one of {@link Opcodes#ASM4}.
83 */
84 protected final int api;
85
86 /**
87 * The method visitor to which this visitor must delegate method calls. May
88 * be null.
89 */
90 protected MethodVisitor mv;
91
92 /**
93 * Constructs a new {@link MethodVisitor}.
94 *
95 * @param api the ASM API version implemented by this visitor. Must be one
96 * of {@link Opcodes#ASM4}.
97 */
98 public MethodVisitor(final int api) {
99 this(api, null);
100 }
101
102 /**
103 * Constructs a new {@link MethodVisitor}.
104 *
105 * @param api the ASM API version implemented by this visitor. Must be one
106 * of {@link Opcodes#ASM4}.
107 * @param mv the method visitor to which this visitor must delegate method
108 * calls. May be null.
109 */
110 public MethodVisitor(final int api, final MethodVisitor mv) {
111 /*if (api != Opcodes.ASM4) {
112 throw new IllegalArgumentException();
113 }*/
114 this.api = api;
115 this.mv = mv;
116 }
117
118 // -------------------------------------------------------------------------
119 // Annotations and non standard attributes
120 // -------------------------------------------------------------------------
121
122 /**
123 * Visits the default value of this annotation interface method.
124 *
125 * @return a visitor to the visit the actual default value of this
126 * annotation interface method, or <tt>null</tt> if this visitor
127 * is not interested in visiting this default value. The 'name'
128 * parameters passed to the methods of this annotation visitor are
129 * ignored. Moreover, exacly one visit method must be called on this
130 * annotation visitor, followed by visitEnd.
131 */
132 public AnnotationVisitor visitAnnotationDefault() {
133 if (mv != null) {
134 return mv.visitAnnotationDefault();
135 }
136 return null;
137 }
138
139 /**
140 * Visits an annotation of this method.
141 *
142 * @param desc the class descriptor of the annotation class.
143 * @param visible <tt>true</tt> if the annotation is visible at runtime.
144 * @return a visitor to visit the annotation values, or <tt>null</tt> if
145 * this visitor is not interested in visiting this annotation.
146 */
147 public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
148 if (mv != null) {
149 return mv.visitAnnotation(desc, visible);
150 }
151 return null;
152 }
153
154 /**
155 * Visits an annotation of a parameter this method.
156 *
157 * @param parameter the parameter index.
158 * @param desc the class descriptor of the annotation class.
159 * @param visible <tt>true</tt> if the annotation is visible at runtime.
160 * @return a visitor to visit the annotation values, or <tt>null</tt> if
161 * this visitor is not interested in visiting this annotation.
162 */
163 public AnnotationVisitor visitParameterAnnotation(
164 int parameter,
165 String desc,
166 boolean visible)
167 {
168 if (mv != null) {
169 return mv.visitParameterAnnotation(parameter, desc, visible);
170 }
171 return null;
172 }
173
174 /**
175 * Visits a non standard attribute of this method.
176 *
177 * @param attr an attribute.
178 */
179 public void visitAttribute(Attribute attr) {
180 if (mv != null) {
181 mv.visitAttribute(attr);
182 }
183 }
184
185 /**
186 * Starts the visit of the method's code, if any (i.e. non abstract method).
187 */
188 public void visitCode() {
189 if (mv != null) {
190 mv.visitCode();
191 }
192 }
193
194 /**
195 * Visits the current state of the local variables and operand stack
196 * elements. This method must(*) be called <i>just before</i> any
197 * instruction <b>i</b> that follows an unconditional branch instruction
198 * such as GOTO or THROW, that is the target of a jump instruction, or that
199 * starts an exception handler block. The visited types must describe the
200 * values of the local variables and of the operand stack elements <i>just
201 * before</i> <b>i</b> is executed. <br> <br> (*) this is mandatory only
202 * for classes whose version is greater than or equal to
203 * {@link Opcodes#V1_6 V1_6}. <br> <br> Packed frames are basically
204 * "deltas" from the state of the previous frame (very first frame is
205 * implicitly defined by the method's parameters and access flags): <ul>
206 * <li>{@link Opcodes#F_SAME} representing frame with exactly the same
207 * locals as the previous frame and with the empty stack.</li> <li>{@link Opcodes#F_SAME1}
208 * representing frame with exactly the same locals as the previous frame and
209 * with single value on the stack (<code>nStack</code> is 1 and
210 * <code>stack[0]</code> contains value for the type of the stack item).</li>
211 * <li>{@link Opcodes#F_APPEND} representing frame with current locals are
212 * the same as the locals in the previous frame, except that additional
213 * locals are defined (<code>nLocal</code> is 1, 2 or 3 and
214 * <code>local</code> elements contains values representing added types).</li>
215 * <li>{@link Opcodes#F_CHOP} representing frame with current locals are
216 * the same as the locals in the previous frame, except that the last 1-3
217 * locals are absent and with the empty stack (<code>nLocals</code> is 1,
218 * 2 or 3). </li> <li>{@link Opcodes#F_FULL} representing complete frame
219 * data.</li> </ul>
220 *
221 * @param type the type of this stack map frame. Must be
222 * {@link Opcodes#F_NEW} for expanded frames, or
223 * {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND},
224 * {@link Opcodes#F_CHOP}, {@link Opcodes#F_SAME} or
225 * {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for compressed
226 * frames.
227 * @param nLocal the number of local variables in the visited frame.
228 * @param local the local variable types in this frame. This array must not
229 * be modified. Primitive types are represented by
230 * {@link Opcodes#TOP}, {@link Opcodes#INTEGER},
231 * {@link Opcodes#FLOAT}, {@link Opcodes#LONG},
232 * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or
233 * {@link Opcodes#UNINITIALIZED_THIS} (long and double are
234 * represented by a single element). Reference types are represented
235 * by String objects (representing internal names), and uninitialized
236 * types by Label objects (this label designates the NEW instruction
237 * that created this uninitialized value).
238 * @param nStack the number of operand stack elements in the visited frame.
239 * @param stack the operand stack types in this frame. This array must not
240 * be modified. Its content has the same format as the "local" array.
241 * @throws IllegalStateException if a frame is visited just after another
242 * one, without any instruction between the two (unless this frame
243 * is a Opcodes#F_SAME frame, in which case it is silently ignored).
244 */
245 public void visitFrame(
246 int type,
247 int nLocal,
248 Object[] local,
249 int nStack,
250 Object[] stack)
251 {
252 if (mv != null) {
253 mv.visitFrame(type, nLocal, local, nStack, stack);
254 }
255 }
256
257 // -------------------------------------------------------------------------
258 // Normal instructions
259 // -------------------------------------------------------------------------
260
261 /**
262 * Visits a zero operand instruction.
263 *
264 * @param opcode the opcode of the instruction to be visited. This opcode is
265 * either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2,
266 * ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0,
267 * FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD,
268 * DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE,
269 * DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP,
270 * DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD,
271 * DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV,
272 * FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL,
273 * LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR,
274 * I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B,
275 * I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN,
276 * FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW,
277 * MONITORENTER, or MONITOREXIT.
278 */
279 public void visitInsn(int opcode) {
280 if (mv != null) {
281 mv.visitInsn(opcode);
282 }
283 }
284
285 /**
286 * Visits an instruction with a single int operand.
287 *
288 * @param opcode the opcode of the instruction to be visited. This opcode is
289 * either BIPUSH, SIPUSH or NEWARRAY.
290 * @param operand the operand of the instruction to be visited.<br> When
291 * opcode is BIPUSH, operand value should be between Byte.MIN_VALUE
292 * and Byte.MAX_VALUE.<br> When opcode is SIPUSH, operand value
293 * should be between Short.MIN_VALUE and Short.MAX_VALUE.<br> When
294 * opcode is NEWARRAY, operand value should be one of
295 * {@link Opcodes#T_BOOLEAN}, {@link Opcodes#T_CHAR},
296 * {@link Opcodes#T_FLOAT}, {@link Opcodes#T_DOUBLE},
297 * {@link Opcodes#T_BYTE}, {@link Opcodes#T_SHORT},
298 * {@link Opcodes#T_INT} or {@link Opcodes#T_LONG}.
299 */
300 public void visitIntInsn(int opcode, int operand) {
301 if (mv != null) {
302 mv.visitIntInsn(opcode, operand);
303 }
304 }
305
306 /**
307 * Visits a local variable instruction. A local variable instruction is an
308 * instruction that loads or stores the value of a local variable.
309 *
310 * @param opcode the opcode of the local variable instruction to be visited.
311 * This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE,
312 * LSTORE, FSTORE, DSTORE, ASTORE or RET.
313 * @param var the operand of the instruction to be visited. This operand is
314 * the index of a local variable.
315 */
316 public void visitVarInsn(int opcode, int var) {
317 if (mv != null) {
318 mv.visitVarInsn(opcode, var);
319 }
320 }
321
322 /**
323 * Visits a type instruction. A type instruction is an instruction that
324 * takes the internal name of a class as parameter.
325 *
326 * @param opcode the opcode of the type instruction to be visited. This
327 * opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
328 * @param type the operand of the instruction to be visited. This operand
329 * must be the internal name of an object or array class (see {@link
330 * Type#getInternalName() getInternalName}).
331 */
332 public void visitTypeInsn(int opcode, String type) {
333 if (mv != null) {
334 mv.visitTypeInsn(opcode, type);
335 }
336 }
337
338 /**
339 * Visits a field instruction. A field instruction is an instruction that
340 * loads or stores the value of a field of an object.
341 *
342 * @param opcode the opcode of the type instruction to be visited. This
343 * opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
344 * @param owner the internal name of the field's owner class (see {@link
345 * Type#getInternalName() getInternalName}).
346 * @param name the field's name.
347 * @param desc the field's descriptor (see {@link Type Type}).
348 */
349 public void visitFieldInsn(int opcode, String owner, String name, String desc) {
350 if (mv != null) {
351 mv.visitFieldInsn(opcode, owner, name, desc);
352 }
353 }
354
355 /**
356 * Visits a method instruction. A method instruction is an instruction that
357 * invokes a method.
358 *
359 * @param opcode the opcode of the type instruction to be visited. This
360 * opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC
361 * or INVOKEINTERFACE.
362 * @param owner the internal name of the method's owner class (see {@link
363 * Type#getInternalName() getInternalName}).
364 * @param name the method's name.
365 * @param desc the method's descriptor (see {@link Type Type}).
366 */
367 public void visitMethodInsn(int opcode, String owner, String name, String desc) {
368 if (mv != null) {
369 mv.visitMethodInsn(opcode, owner, name, desc);
370 }
371 }
372
373 /**
374 * Visits an invokedynamic instruction.
375 *
376 * @param name the method's name.
377 * @param desc the method's descriptor (see {@link Type Type}).
378 * @param bsm the bootstrap method.
379 * @param bsmArgs the bootstrap method constant arguments. Each argument
380 * must be an {@link Integer}, {@link Float}, {@link Long},
381 * {@link Double}, {@link String}, {@link Type} or {@link Handle}
382 * value. This method is allowed to modify the content of the array
383 * so a caller should expect that this array may change.
384 */
385 public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
386 if (mv != null) {
387 mv.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
388 }
389 }
390
391 /**
392 * Visits a jump instruction. A jump instruction is an instruction that may
393 * jump to another instruction.
394 *
395 * @param opcode the opcode of the type instruction to be visited. This
396 * opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ,
397 * IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ,
398 * IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
399 * @param label the operand of the instruction to be visited. This operand
400 * is a label that designates the instruction to which the jump
401 * instruction may jump.
402 */
403 public void visitJumpInsn(int opcode, Label label) {
404 if (mv != null) {
405 mv.visitJumpInsn(opcode, label);
406 }
407 }
408
409 /**
410 * Visits a label. A label designates the instruction that will be visited
411 * just after it.
412 *
413 * @param label a {@link Label Label} object.
414 */
415 public void visitLabel(Label label) {
416 if (mv != null) {
417 mv.visitLabel(label);
418 }
419 }
420
421 // -------------------------------------------------------------------------
422 // Special instructions
423 // -------------------------------------------------------------------------
424
425 /**
426 * Visits a LDC instruction. Note that new constant types may be added in
427 * future versions of the Java Virtual Machine. To easily detect new
428 * constant types, implementations of this method should check for
429 * unexpected constant types, like this:
430 * <pre>
431 * if (cst instanceof Integer) {
432 * // ...
433 * } else if (cst instanceof Float) {
434 * // ...
435 * } else if (cst instanceof Long) {
436 * // ...
437 * } else if (cst instanceof Double) {
438 * // ...
439 * } else if (cst instanceof String) {
440 * // ...
441 * } else if (cst instanceof Type) {
442 * int sort = ((Type) cst).getSort();
443 * if (sort == Type.OBJECT) {
444 * // ...
445 * } else if (sort == Type.ARRAY) {
446 * // ...
447 * } else if (sort == Type.METHOD) {
448 * // ...
449 * } else {
450 * // throw an exception
451 * }
452 * } else if (cst instanceof Handle) {
453 * // ...
454 * } else {
455 * // throw an exception
456 * }</pre>
457 *
458 * @param cst the constant to be loaded on the stack. This parameter must be
459 * a non null {@link Integer}, a {@link Float}, a {@link Long}, a
460 * {@link Double}, a {@link String}, a {@link Type} of OBJECT or ARRAY
461 * sort for <tt>.class</tt> constants, for classes whose version is
462 * 49.0, a {@link Type} of METHOD sort or a {@link Handle} for
463 * MethodType and MethodHandle constants, for classes whose version
464 * is 51.0.
465 */
466 public void visitLdcInsn(Object cst) {
467 if (mv != null) {
468 mv.visitLdcInsn(cst);
469 }
470 }
471
472 /**
473 * Visits an IINC instruction.
474 *
475 * @param var index of the local variable to be incremented.
476 * @param increment amount to increment the local variable by.
477 */
478 public void visitIincInsn(int var, int increment) {
479 if (mv != null) {
480 mv.visitIincInsn(var, increment);
481 }
482 }
483
484 /**
485 * Visits a TABLESWITCH instruction.
486 *
487 * @param min the minimum key value.
488 * @param max the maximum key value.
489 * @param dflt beginning of the default handler block.
490 * @param labels beginnings of the handler blocks. <tt>labels[i]</tt> is
491 * the beginning of the handler block for the <tt>min + i</tt> key.
492 */
493 public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) {
494 if (mv != null) {
495 mv.visitTableSwitchInsn(min, max, dflt, labels);
496 }
497 }
498
499 /**
500 * Visits a LOOKUPSWITCH instruction.
501 *
502 * @param dflt beginning of the default handler block.
503 * @param keys the values of the keys.
504 * @param labels beginnings of the handler blocks. <tt>labels[i]</tt> is
505 * the beginning of the handler block for the <tt>keys[i]</tt> key.
506 */
507 public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) {
508 if (mv != null) {
509 mv.visitLookupSwitchInsn(dflt, keys, labels);
510 }
511 }
512
513 /**
514 * Visits a MULTIANEWARRAY instruction.
515 *
516 * @param desc an array type descriptor (see {@link Type Type}).
517 * @param dims number of dimensions of the array to allocate.
518 */
519 public void visitMultiANewArrayInsn(String desc, int dims) {
520 if (mv != null) {
521 mv.visitMultiANewArrayInsn(desc, dims);
522 }
523 }
524
525 // -------------------------------------------------------------------------
526 // Exceptions table entries, debug information, max stack and max locals
527 // -------------------------------------------------------------------------
528
529 /**
530 * Visits a try catch block.
531 *
532 * @param start beginning of the exception handler's scope (inclusive).
533 * @param end end of the exception handler's scope (exclusive).
534 * @param handler beginning of the exception handler's code.
535 * @param type internal name of the type of exceptions handled by the
536 * handler, or <tt>null</tt> to catch any exceptions (for "finally"
537 * blocks).
538 * @throws IllegalArgumentException if one of the labels has already been
539 * visited by this visitor (by the {@link #visitLabel visitLabel}
540 * method).
541 */
542 public void visitTryCatchBlock(Label start, Label end, Label handler, String type) {
543 if (mv != null) {
544 mv.visitTryCatchBlock(start, end, handler, type);
545 }
546 }
547
548 /**
549 * Visits a local variable declaration.
550 *
551 * @param name the name of a local variable.
552 * @param desc the type descriptor of this local variable.
553 * @param signature the type signature of this local variable. May be
554 * <tt>null</tt> if the local variable type does not use generic
555 * types.
556 * @param start the first instruction corresponding to the scope of this
557 * local variable (inclusive).
558 * @param end the last instruction corresponding to the scope of this local
559 * variable (exclusive).
560 * @param index the local variable's index.
561 * @throws IllegalArgumentException if one of the labels has not already
562 * been visited by this visitor (by the
563 * {@link #visitLabel visitLabel} method).
564 */
565 public void visitLocalVariable(
566 String name,
567 String desc,
568 String signature,
569 Label start,
570 Label end,
571 int index)
572 {
573 if (mv != null) {
574 mv.visitLocalVariable(name, desc, signature, start, end, index);
575 }
576 }
577
578 /**
579 * Visits a line number declaration.
580 *
581 * @param line a line number. This number refers to the source file from
582 * which the class was compiled.
583 * @param start the first instruction corresponding to this line number.
584 * @throws IllegalArgumentException if <tt>start</tt> has not already been
585 * visited by this visitor (by the {@link #visitLabel visitLabel}
586 * method).
587 */
588 public void visitLineNumber(int line, Label start) {
589 if (mv != null) {
590 mv.visitLineNumber(line, start);
591 }
592 }
593
594 /**
595 * Visits the maximum stack size and the maximum number of local variables
596 * of the method.
597 *
598 * @param maxStack maximum stack size of the method.
599 * @param maxLocals maximum number of local variables for the method.
600 */
601 public void visitMaxs(int maxStack, int maxLocals) {
602 if (mv != null) {
603 mv.visitMaxs(maxStack, maxLocals);
604 }
605 }
606
607 /**
608 * Visits the end of the method. This method, which is the last one to be
609 * called, is used to inform the visitor that all the annotations and
610 * attributes of the method have been visited.
611 */
612 public void visitEnd() {
613 if (mv != null) {
614 mv.visitEnd();
615 }
616 }
617 }