1 /*
2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.lang.reflect;
27
28 import java.lang.annotation.*;
29 import java.util.Arrays;
30 import java.util.Map;
31 import java.util.Objects;
32 import java.util.StringJoiner;
33 import java.util.stream.Stream;
34 import java.util.stream.Collectors;
35
36 import jdk.internal.access.SharedSecrets;
37 import sun.reflect.annotation.AnnotationParser;
38 import sun.reflect.annotation.AnnotationSupport;
39 import sun.reflect.annotation.TypeAnnotationParser;
40 import sun.reflect.annotation.TypeAnnotation;
41 import sun.reflect.generics.repository.ConstructorRepository;
42
43 /**
44 * A shared superclass for the common functionality of {@link Method}
45 * and {@link Constructor}.
46 *
47 * @since 1.8
48 */
49 public abstract class Executable extends AccessibleObject
50 implements Member, GenericDeclaration {
51 /*
52 * Only grant package-visibility to the constructor.
53 */
54 Executable() {}
55
56 /**
57 * Accessor method to allow code sharing
58 */
59 abstract byte[] getAnnotationBytes();
60
61 /**
62 * Does the Executable have generic information.
63 */
64 abstract boolean hasGenericInformation();
65
66 abstract ConstructorRepository getGenericInfo();
67
68 boolean equalParamTypes(Class<?>[] params1, Class<?>[] params2) {
69 /* Avoid unnecessary cloning */
70 if (params1.length == params2.length) {
71 for (int i = 0; i < params1.length; i++) {
72 if (params1[i] != params2[i])
73 return false;
74 }
75 return true;
76 }
77 return false;
78 }
79
80 Annotation[][] parseParameterAnnotations(byte[] parameterAnnotations) {
81 return AnnotationParser.parseParameterAnnotations(
82 parameterAnnotations,
83 SharedSecrets.getJavaLangAccess().
84 getConstantPool(getDeclaringClass()),
85 getDeclaringClass());
86 }
87
88 void printModifiersIfNonzero(StringBuilder sb, int mask, boolean isDefault) {
89 int mod = getModifiers() & mask;
90
91 if (mod != 0 && !isDefault) {
92 sb.append(Modifier.toString(mod)).append(' ');
93 } else {
94 int access_mod = mod & Modifier.ACCESS_MODIFIERS;
95 if (access_mod != 0)
96 sb.append(Modifier.toString(access_mod)).append(' ');
97 if (isDefault)
98 sb.append("default ");
99 mod = (mod & ~Modifier.ACCESS_MODIFIERS);
100 if (mod != 0)
101 sb.append(Modifier.toString(mod)).append(' ');
102 }
103 }
104
105 String sharedToString(int modifierMask,
106 boolean isDefault,
107 Class<?>[] parameterTypes,
108 Class<?>[] exceptionTypes) {
109 try {
110 StringBuilder sb = new StringBuilder();
111
112 printModifiersIfNonzero(sb, modifierMask, isDefault);
113 specificToStringHeader(sb);
114 sb.append(Arrays.stream(parameterTypes)
115 .map(Type::getTypeName)
116 .collect(Collectors.joining(",", "(", ")")));
117 if (exceptionTypes.length > 0) {
118 sb.append(Arrays.stream(exceptionTypes)
119 .map(Type::getTypeName)
120 .collect(Collectors.joining(",", " throws ", "")));
121 }
122 return sb.toString();
123 } catch (Exception e) {
124 return "<" + e + ">";
125 }
126 }
127
128 /**
129 * Generate toString header information specific to a method or
130 * constructor.
131 */
132 abstract void specificToStringHeader(StringBuilder sb);
133
134 static String typeVarBounds(TypeVariable<?> typeVar) {
135 Type[] bounds = typeVar.getBounds();
136 if (bounds.length == 1 && bounds[0].equals(Object.class)) {
137 return typeVar.getName();
138 } else {
139 return typeVar.getName() + " extends " +
140 Arrays.stream(bounds)
141 .map(Type::getTypeName)
142 .collect(Collectors.joining(" & "));
143 }
144 }
145
146 String sharedToGenericString(int modifierMask, boolean isDefault) {
147 try {
148 StringBuilder sb = new StringBuilder();
149
150 printModifiersIfNonzero(sb, modifierMask, isDefault);
151
152 TypeVariable<?>[] typeparms = getTypeParameters();
153 if (typeparms.length > 0) {
154 sb.append(Arrays.stream(typeparms)
155 .map(Executable::typeVarBounds)
156 .collect(Collectors.joining(",", "<", "> ")));
157 }
158
159 specificToGenericStringHeader(sb);
160
161 sb.append('(');
162 StringJoiner sj = new StringJoiner(",");
163 Type[] params = getGenericParameterTypes();
164 for (int j = 0; j < params.length; j++) {
165 String param = params[j].getTypeName();
166 if (isVarArgs() && (j == params.length - 1)) // replace T[] with T...
167 param = param.replaceFirst("\\[\\]$", "...");
168 sj.add(param);
169 }
170 sb.append(sj.toString());
171 sb.append(')');
172
173 Type[] exceptionTypes = getGenericExceptionTypes();
174 if (exceptionTypes.length > 0) {
175 sb.append(Arrays.stream(exceptionTypes)
176 .map(Type::getTypeName)
177 .collect(Collectors.joining(",", " throws ", "")));
178 }
179 return sb.toString();
180 } catch (Exception e) {
181 return "<" + e + ">";
182 }
183 }
184
185 /**
186 * Generate toGenericString header information specific to a
187 * method or constructor.
188 */
189 abstract void specificToGenericStringHeader(StringBuilder sb);
190
191 /**
192 * Returns the {@code Class} object representing the class or interface
193 * that declares the executable represented by this object.
194 */
195 public abstract Class<?> getDeclaringClass();
196
197 /**
198 * Returns the name of the executable represented by this object.
199 */
200 public abstract String getName();
201
202 /**
203 * Returns the Java language {@linkplain Modifier modifiers} for
204 * the executable represented by this object.
205 */
206 public abstract int getModifiers();
207
208 /**
209 * Returns an array of {@code TypeVariable} objects that represent the
210 * type variables declared by the generic declaration represented by this
211 * {@code GenericDeclaration} object, in declaration order. Returns an
212 * array of length 0 if the underlying generic declaration declares no type
213 * variables.
214 *
215 * @return an array of {@code TypeVariable} objects that represent
216 * the type variables declared by this generic declaration
217 * @throws GenericSignatureFormatError if the generic
218 * signature of this generic declaration does not conform to
219 * the format specified in
220 * <cite>The Java™ Virtual Machine Specification</cite>
221 */
222 public abstract TypeVariable<?>[] getTypeParameters();
223
224 // returns shared array of parameter types - must never give it out
225 // to the untrusted code...
226 abstract Class<?>[] getSharedParameterTypes();
227
228 // returns shared array of exception types - must never give it out
229 // to the untrusted code...
230 abstract Class<?>[] getSharedExceptionTypes();
231
232 /**
233 * Returns an array of {@code Class} objects that represent the formal
234 * parameter types, in declaration order, of the executable
235 * represented by this object. Returns an array of length
236 * 0 if the underlying executable takes no parameters.
237 * Note that the constructors of some inner classes
238 * may have an implicitly declared parameter in addition to
239 * explicitly declared ones.
240 *
241 * @return the parameter types for the executable this object
242 * represents
243 */
244 public abstract Class<?>[] getParameterTypes();
245
246 /**
247 * Returns the number of formal parameters (whether explicitly
248 * declared or implicitly declared or neither) for the executable
249 * represented by this object.
250 *
251 * @return The number of formal parameters for the executable this
252 * object represents
253 */
254 public int getParameterCount() {
255 throw new AbstractMethodError();
256 }
257
258 /**
259 * Returns an array of {@code Type} objects that represent the formal
260 * parameter types, in declaration order, of the executable represented by
261 * this object. Returns an array of length 0 if the
262 * underlying executable takes no parameters.
263 * Note that the constructors of some inner classes
264 * may have an implicitly declared parameter in addition to
265 * explicitly declared ones.
266 *
267 * <p>If a formal parameter type is a parameterized type,
268 * the {@code Type} object returned for it must accurately reflect
269 * the actual type arguments used in the source code.
270 *
271 * <p>If a formal parameter type is a type variable or a parameterized
272 * type, it is created. Otherwise, it is resolved.
273 *
274 * @return an array of {@code Type}s that represent the formal
275 * parameter types of the underlying executable, in declaration order
276 * @throws GenericSignatureFormatError
277 * if the generic method signature does not conform to the format
278 * specified in
279 * <cite>The Java™ Virtual Machine Specification</cite>
280 * @throws TypeNotPresentException if any of the parameter
281 * types of the underlying executable refers to a non-existent type
282 * declaration
283 * @throws MalformedParameterizedTypeException if any of
284 * the underlying executable's parameter types refer to a parameterized
285 * type that cannot be instantiated for any reason
286 */
287 public Type[] getGenericParameterTypes() {
288 if (hasGenericInformation())
289 return getGenericInfo().getParameterTypes();
290 else
291 return getParameterTypes();
292 }
293
294 /**
295 * Behaves like {@code getGenericParameterTypes}, but returns type
296 * information for all parameters, including synthetic parameters.
297 */
298 Type[] getAllGenericParameterTypes() {
299 final boolean genericInfo = hasGenericInformation();
300
301 // Easy case: we don't have generic parameter information. In
302 // this case, we just return the result of
303 // getParameterTypes().
304 if (!genericInfo) {
305 return getParameterTypes();
306 } else {
307 final boolean realParamData = hasRealParameterData();
308 final Type[] genericParamTypes = getGenericParameterTypes();
309 final Type[] nonGenericParamTypes = getParameterTypes();
310 final Type[] out = new Type[nonGenericParamTypes.length];
311 final Parameter[] params = getParameters();
312 int fromidx = 0;
313 // If we have real parameter data, then we use the
314 // synthetic and mandate flags to our advantage.
315 if (realParamData) {
316 for (int i = 0; i < out.length; i++) {
317 final Parameter param = params[i];
318 if (param.isSynthetic() || param.isImplicit()) {
319 // If we hit a synthetic or mandated parameter,
320 // use the non generic parameter info.
321 out[i] = nonGenericParamTypes[i];
322 } else {
323 // Otherwise, use the generic parameter info.
324 out[i] = genericParamTypes[fromidx];
325 fromidx++;
326 }
327 }
328 } else {
329 // Otherwise, use the non-generic parameter data.
330 // Without method parameter reflection data, we have
331 // no way to figure out which parameters are
332 // synthetic/mandated, thus, no way to match up the
333 // indexes.
334 return genericParamTypes.length == nonGenericParamTypes.length ?
335 genericParamTypes : nonGenericParamTypes;
336 }
337 return out;
338 }
339 }
340
341 /**
342 * Returns an array of {@code Parameter} objects that represent
343 * all the parameters to the underlying executable represented by
344 * this object. Returns an array of length 0 if the executable
345 * has no parameters.
346 *
347 * <p>The parameters of the underlying executable do not necessarily
348 * have unique names, or names that are legal identifiers in the
349 * Java programming language (JLS 3.8).
350 *
351 * @throws MalformedParametersException if the class file contains
352 * a MethodParameters attribute that is improperly formatted.
353 * @return an array of {@code Parameter} objects representing all
354 * the parameters to the executable this object represents.
355 */
356 public Parameter[] getParameters() {
357 // TODO: This may eventually need to be guarded by security
358 // mechanisms similar to those in Field, Method, etc.
359 //
360 // Need to copy the cached array to prevent users from messing
361 // with it. Since parameters are immutable, we can
362 // shallow-copy.
363 return privateGetParameters().clone();
364 }
365
366 private Parameter[] synthesizeAllParams() {
367 final int realparams = getParameterCount();
368 final Parameter[] out = new Parameter[realparams];
369 for (int i = 0; i < realparams; i++)
370 // TODO: is there a way to synthetically derive the
371 // modifiers? Probably not in the general case, since
372 // we'd have no way of knowing about them, but there
373 // may be specific cases.
374 out[i] = new Parameter("arg" + i, 0, this, i);
375 return out;
376 }
377
378 private void verifyParameters(final Parameter[] parameters) {
379 final int mask = Modifier.FINAL | Modifier.SYNTHETIC | Modifier.MANDATED;
380
381 if (getParameterTypes().length != parameters.length)
382 throw new MalformedParametersException("Wrong number of parameters in MethodParameters attribute");
383
384 for (Parameter parameter : parameters) {
385 final String name = parameter.getRealName();
386 final int mods = parameter.getModifiers();
387
388 if (name != null) {
389 if (name.isEmpty() || name.indexOf('.') != -1 ||
390 name.indexOf(';') != -1 || name.indexOf('[') != -1 ||
391 name.indexOf('/') != -1) {
392 throw new MalformedParametersException("Invalid parameter name \"" + name + "\"");
393 }
394 }
395
396 if (mods != (mods & mask)) {
397 throw new MalformedParametersException("Invalid parameter modifiers");
398 }
399 }
400 }
401
402 private Parameter[] privateGetParameters() {
403 // Use tmp to avoid multiple writes to a volatile.
404 Parameter[] tmp = parameters;
405
406 if (tmp == null) {
407
408 // Otherwise, go to the JVM to get them
409 try {
410 tmp = getParameters0();
411 } catch(IllegalArgumentException e) {
412 // Rethrow ClassFormatErrors
413 throw new MalformedParametersException("Invalid constant pool index");
414 }
415
416 // If we get back nothing, then synthesize parameters
417 if (tmp == null) {
418 hasRealParameterData = false;
419 tmp = synthesizeAllParams();
420 } else {
421 hasRealParameterData = true;
422 verifyParameters(tmp);
423 }
424
425 parameters = tmp;
426 }
427
428 return tmp;
429 }
430
431 boolean hasRealParameterData() {
432 // If this somehow gets called before parameters gets
433 // initialized, force it into existence.
434 if (parameters == null) {
435 privateGetParameters();
436 }
437 return hasRealParameterData;
438 }
439
440 private transient volatile boolean hasRealParameterData;
441 private transient volatile Parameter[] parameters;
442
443 private native Parameter[] getParameters0();
444 native byte[] getTypeAnnotationBytes0();
445
446 // Needed by reflectaccess
447 byte[] getTypeAnnotationBytes() {
448 return getTypeAnnotationBytes0();
449 }
450
451 /**
452 * Returns an array of {@code Class} objects that represent the
453 * types of exceptions declared to be thrown by the underlying
454 * executable represented by this object. Returns an array of
455 * length 0 if the executable declares no exceptions in its {@code
456 * throws} clause.
457 *
458 * @return the exception types declared as being thrown by the
459 * executable this object represents
460 */
461 public abstract Class<?>[] getExceptionTypes();
462
463 /**
464 * Returns an array of {@code Type} objects that represent the
465 * exceptions declared to be thrown by this executable object.
466 * Returns an array of length 0 if the underlying executable declares
467 * no exceptions in its {@code throws} clause.
468 *
469 * <p>If an exception type is a type variable or a parameterized
470 * type, it is created. Otherwise, it is resolved.
471 *
472 * @return an array of Types that represent the exception types
473 * thrown by the underlying executable
474 * @throws GenericSignatureFormatError
475 * if the generic method signature does not conform to the format
476 * specified in
477 * <cite>The Java™ Virtual Machine Specification</cite>
478 * @throws TypeNotPresentException if the underlying executable's
479 * {@code throws} clause refers to a non-existent type declaration
480 * @throws MalformedParameterizedTypeException if
481 * the underlying executable's {@code throws} clause refers to a
482 * parameterized type that cannot be instantiated for any reason
483 */
484 public Type[] getGenericExceptionTypes() {
485 Type[] result;
486 if (hasGenericInformation() &&
487 ((result = getGenericInfo().getExceptionTypes()).length > 0))
488 return result;
489 else
490 return getExceptionTypes();
491 }
492
493 /**
494 * Returns a string describing this {@code Executable}, including
495 * any type parameters.
496 * @return a string describing this {@code Executable}, including
497 * any type parameters
498 */
499 public abstract String toGenericString();
500
501 /**
502 * Returns {@code true} if this executable was declared to take a
503 * variable number of arguments; returns {@code false} otherwise.
504 *
505 * @return {@code true} if an only if this executable was declared
506 * to take a variable number of arguments.
507 */
508 public boolean isVarArgs() {
509 return (getModifiers() & Modifier.VARARGS) != 0;
510 }
511
512 /**
513 * Returns {@code true} if this executable is a synthetic
514 * construct; returns {@code false} otherwise.
515 *
516 * @return true if and only if this executable is a synthetic
517 * construct as defined by
518 * <cite>The Java™ Language Specification</cite>.
519 * @jls 13.1 The Form of a Binary
520 */
521 public boolean isSynthetic() {
522 return Modifier.isSynthetic(getModifiers());
523 }
524
525 /**
526 * Returns an array of arrays of {@code Annotation}s that
527 * represent the annotations on the formal parameters, in
528 * declaration order, of the {@code Executable} represented by
529 * this object. Synthetic and mandated parameters (see
530 * explanation below), such as the outer "this" parameter to an
531 * inner class constructor will be represented in the returned
532 * array. If the executable has no parameters (meaning no formal,
533 * no synthetic, and no mandated parameters), a zero-length array
534 * will be returned. If the {@code Executable} has one or more
535 * parameters, a nested array of length zero is returned for each
536 * parameter with no annotations. The annotation objects contained
537 * in the returned arrays are serializable. The caller of this
538 * method is free to modify the returned arrays; it will have no
539 * effect on the arrays returned to other callers.
540 *
541 * A compiler may add extra parameters that are implicitly
542 * declared in source ("mandated"), as well as parameters that
543 * are neither implicitly nor explicitly declared in source
544 * ("synthetic") to the parameter list for a method. See {@link
545 * java.lang.reflect.Parameter} for more information.
546 *
547 * @see java.lang.reflect.Parameter
548 * @see java.lang.reflect.Parameter#getAnnotations
549 * @return an array of arrays that represent the annotations on
550 * the formal and implicit parameters, in declaration order, of
551 * the executable represented by this object
552 */
553 public abstract Annotation[][] getParameterAnnotations();
554
555 Annotation[][] sharedGetParameterAnnotations(Class<?>[] parameterTypes,
556 byte[] parameterAnnotations) {
557 int numParameters = parameterTypes.length;
558 if (parameterAnnotations == null)
559 return new Annotation[numParameters][0];
560
561 Annotation[][] result = parseParameterAnnotations(parameterAnnotations);
562
563 if (result.length != numParameters &&
564 handleParameterNumberMismatch(result.length, numParameters)) {
565 Annotation[][] tmp = new Annotation[result.length+1][];
566 // Shift annotations down one to account for an implicit leading parameter
567 System.arraycopy(result, 0, tmp, 1, result.length);
568 tmp[0] = new Annotation[0];
569 result = tmp;
570 }
571 return result;
572 }
573
574 abstract boolean handleParameterNumberMismatch(int resultLength, int numParameters);
575
576 /**
577 * {@inheritDoc}
578 * @throws NullPointerException {@inheritDoc}
579 */
580 public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
581 Objects.requireNonNull(annotationClass);
582 return annotationClass.cast(declaredAnnotations().get(annotationClass));
583 }
584
585 /**
586 * {@inheritDoc}
587 * @throws NullPointerException {@inheritDoc}
588 */
589 @Override
590 public <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass) {
591 Objects.requireNonNull(annotationClass);
592
593 return AnnotationSupport.getDirectlyAndIndirectlyPresent(declaredAnnotations(), annotationClass);
594 }
595
596 /**
597 * {@inheritDoc}
598 */
599 public Annotation[] getDeclaredAnnotations() {
600 return AnnotationParser.toArray(declaredAnnotations());
601 }
602
603 private transient volatile Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
604
605 private Map<Class<? extends Annotation>, Annotation> declaredAnnotations() {
606 Map<Class<? extends Annotation>, Annotation> declAnnos;
607 if ((declAnnos = declaredAnnotations) == null) {
608 synchronized (this) {
609 if ((declAnnos = declaredAnnotations) == null) {
610 Executable root = (Executable)getRoot();
611 if (root != null) {
612 declAnnos = root.declaredAnnotations();
613 } else {
614 declAnnos = AnnotationParser.parseAnnotations(
615 getAnnotationBytes(),
616 SharedSecrets.getJavaLangAccess().
617 getConstantPool(getDeclaringClass()),
618 getDeclaringClass()
619 );
620 }
621 declaredAnnotations = declAnnos;
622 }
623 }
624 }
625 return declAnnos;
626 }
627
628 /**
629 * Returns an {@code AnnotatedType} object that represents the use of a type to
630 * specify the return type of the method/constructor represented by this
631 * Executable.
632 *
633 * If this {@code Executable} object represents a constructor, the {@code
634 * AnnotatedType} object represents the type of the constructed object.
635 *
636 * If this {@code Executable} object represents a method, the {@code
637 * AnnotatedType} object represents the use of a type to specify the return
638 * type of the method.
639 *
640 * @return an object representing the return type of the method
641 * or constructor represented by this {@code Executable}
642 */
643 public abstract AnnotatedType getAnnotatedReturnType();
644
645 /* Helper for subclasses of Executable.
646 *
647 * Returns an AnnotatedType object that represents the use of a type to
648 * specify the return type of the method/constructor represented by this
649 * Executable.
650 */
651 AnnotatedType getAnnotatedReturnType0(Type returnType) {
652 return TypeAnnotationParser.buildAnnotatedType(getTypeAnnotationBytes0(),
653 SharedSecrets.getJavaLangAccess().
654 getConstantPool(getDeclaringClass()),
655 this,
656 getDeclaringClass(),
657 returnType,
658 TypeAnnotation.TypeAnnotationTarget.METHOD_RETURN);
659 }
660
661 /**
662 * Returns an {@code AnnotatedType} object that represents the use of a
663 * type to specify the receiver type of the method/constructor represented
664 * by this {@code Executable} object.
665 *
666 * The receiver type of a method/constructor is available only if the
667 * method/constructor has a receiver parameter (JLS 8.4.1). If this {@code
668 * Executable} object <em>represents an instance method or represents a
669 * constructor of an inner member class</em>, and the
670 * method/constructor <em>either</em> has no receiver parameter or has a
671 * receiver parameter with no annotations on its type, then the return
672 * value is an {@code AnnotatedType} object representing an element with no
673 * annotations.
674 *
675 * If this {@code Executable} object represents a static method or
676 * represents a constructor of a top level, static member, local, or
677 * anonymous class, then the return value is null.
678 *
679 * @return an object representing the receiver type of the method or
680 * constructor represented by this {@code Executable} or {@code null} if
681 * this {@code Executable} can not have a receiver parameter
682 *
683 * @jls 8.4 Method Declarations
684 * @jls 8.4.1 Formal Parameters
685 * @jls 8.8 Constructor Declarations
686 */
687 public AnnotatedType getAnnotatedReceiverType() {
688 if (Modifier.isStatic(this.getModifiers()))
689 return null;
690 return TypeAnnotationParser.buildAnnotatedType(getTypeAnnotationBytes0(),
691 SharedSecrets.getJavaLangAccess().
692 getConstantPool(getDeclaringClass()),
693 this,
694 getDeclaringClass(),
695 getDeclaringClass(),
696 TypeAnnotation.TypeAnnotationTarget.METHOD_RECEIVER);
697 }
698
699 /**
700 * Returns an array of {@code AnnotatedType} objects that represent the use
701 * of types to specify formal parameter types of the method/constructor
702 * represented by this Executable. The order of the objects in the array
703 * corresponds to the order of the formal parameter types in the
704 * declaration of the method/constructor.
705 *
706 * Returns an array of length 0 if the method/constructor declares no
707 * parameters.
708 * Note that the constructors of some inner classes
709 * may have an implicitly declared parameter in addition to
710 * explicitly declared ones.
711 *
712 * @return an array of objects representing the types of the
713 * formal parameters of the method or constructor represented by this
714 * {@code Executable}
715 */
716 public AnnotatedType[] getAnnotatedParameterTypes() {
717 return TypeAnnotationParser.buildAnnotatedTypes(getTypeAnnotationBytes0(),
718 SharedSecrets.getJavaLangAccess().
719 getConstantPool(getDeclaringClass()),
720 this,
721 getDeclaringClass(),
722 getAllGenericParameterTypes(),
723 TypeAnnotation.TypeAnnotationTarget.METHOD_FORMAL_PARAMETER);
724 }
725
726 /**
727 * Returns an array of {@code AnnotatedType} objects that represent the use
728 * of types to specify the declared exceptions of the method/constructor
729 * represented by this Executable. The order of the objects in the array
730 * corresponds to the order of the exception types in the declaration of
731 * the method/constructor.
732 *
733 * Returns an array of length 0 if the method/constructor declares no
734 * exceptions.
735 *
736 * @return an array of objects representing the declared
737 * exceptions of the method or constructor represented by this {@code
738 * Executable}
739 */
740 public AnnotatedType[] getAnnotatedExceptionTypes() {
741 return TypeAnnotationParser.buildAnnotatedTypes(getTypeAnnotationBytes0(),
742 SharedSecrets.getJavaLangAccess().
743 getConstantPool(getDeclaringClass()),
744 this,
745 getDeclaringClass(),
746 getGenericExceptionTypes(),
747 TypeAnnotation.TypeAnnotationTarget.THROWS);
748 }
749
750 }