721 lines
27 KiB
Java
721 lines
27 KiB
Java
|
/*
|
||
|
|
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
|
||
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||
|
|
*
|
||
|
|
* This code is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License version 2 only, as
|
||
|
|
* published by the Free Software Foundation. Oracle designates this
|
||
|
|
* particular file as subject to the "Classpath" exception as provided
|
||
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
||
|
|
*
|
||
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
||
|
|
* accompanied this code).
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License version
|
||
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
||
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*
|
||
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
||
|
|
* or visit www.oracle.com if you need additional information or have any
|
||
|
|
* questions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package java.lang.reflect;
|
||
|
|
|
||
|
|
import java.lang.annotation.*;
|
||
|
|
import java.util.Map;
|
||
|
|
import java.util.Objects;
|
||
|
|
import sun.reflect.annotation.AnnotationParser;
|
||
|
|
import sun.reflect.annotation.AnnotationSupport;
|
||
|
|
import sun.reflect.annotation.TypeAnnotationParser;
|
||
|
|
import sun.reflect.annotation.TypeAnnotation;
|
||
|
|
import sun.reflect.generics.repository.ConstructorRepository;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A shared superclass for the common functionality of {@link Method}
|
||
|
|
* and {@link Constructor}.
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public abstract class Executable extends AccessibleObject
|
||
|
|
implements Member, GenericDeclaration {
|
||
|
|
/*
|
||
|
|
* Only grant package-visibility to the constructor.
|
||
|
|
*/
|
||
|
|
Executable() {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Accessor method to allow code sharing
|
||
|
|
*/
|
||
|
|
abstract Executable getRoot();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Does the Executable have generic information.
|
||
|
|
*/
|
||
|
|
abstract boolean hasGenericInformation();
|
||
|
|
|
||
|
|
abstract ConstructorRepository getGenericInfo();
|
||
|
|
|
||
|
|
boolean equalParamTypes(Class<?>[] params1, Class<?>[] params2) {
|
||
|
|
/* Avoid unnecessary cloning */
|
||
|
|
if (params1.length == params2.length) {
|
||
|
|
for (int i = 0; i < params1.length; i++) {
|
||
|
|
if (params1[i] != params2[i])
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void separateWithCommas(Class<?>[] types, StringBuilder sb) {
|
||
|
|
for (int j = 0; j < types.length; j++) {
|
||
|
|
sb.append(types[j].getTypeName());
|
||
|
|
if (j < (types.length - 1))
|
||
|
|
sb.append(",");
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void printModifiersIfNonzero(StringBuilder sb, int mask, boolean isDefault) {
|
||
|
|
int mod = getModifiers() & mask;
|
||
|
|
|
||
|
|
if (mod != 0 && !isDefault) {
|
||
|
|
sb.append(Modifier.toString(mod)).append(' ');
|
||
|
|
} else {
|
||
|
|
int access_mod = mod & Modifier.ACCESS_MODIFIERS;
|
||
|
|
if (access_mod != 0)
|
||
|
|
sb.append(Modifier.toString(access_mod)).append(' ');
|
||
|
|
if (isDefault)
|
||
|
|
sb.append("default ");
|
||
|
|
mod = (mod & ~Modifier.ACCESS_MODIFIERS);
|
||
|
|
if (mod != 0)
|
||
|
|
sb.append(Modifier.toString(mod)).append(' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
String sharedToString(int modifierMask,
|
||
|
|
boolean isDefault,
|
||
|
|
Class<?>[] parameterTypes,
|
||
|
|
Class<?>[] exceptionTypes) {
|
||
|
|
try {
|
||
|
|
StringBuilder sb = new StringBuilder();
|
||
|
|
|
||
|
|
printModifiersIfNonzero(sb, modifierMask, isDefault);
|
||
|
|
specificToStringHeader(sb);
|
||
|
|
|
||
|
|
sb.append('(');
|
||
|
|
separateWithCommas(parameterTypes, sb);
|
||
|
|
sb.append(')');
|
||
|
|
if (exceptionTypes.length > 0) {
|
||
|
|
sb.append(" throws ");
|
||
|
|
separateWithCommas(exceptionTypes, sb);
|
||
|
|
}
|
||
|
|
return sb.toString();
|
||
|
|
} catch (Exception e) {
|
||
|
|
return "<" + e + ">";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate toString header information specific to a method or
|
||
|
|
* constructor.
|
||
|
|
*/
|
||
|
|
abstract void specificToStringHeader(StringBuilder sb);
|
||
|
|
|
||
|
|
String sharedToGenericString(int modifierMask, boolean isDefault) {
|
||
|
|
try {
|
||
|
|
StringBuilder sb = new StringBuilder();
|
||
|
|
|
||
|
|
printModifiersIfNonzero(sb, modifierMask, isDefault);
|
||
|
|
|
||
|
|
TypeVariable<?>[] typeparms = getTypeParameters();
|
||
|
|
if (typeparms.length > 0) {
|
||
|
|
boolean first = true;
|
||
|
|
sb.append('<');
|
||
|
|
for(TypeVariable<?> typeparm: typeparms) {
|
||
|
|
if (!first)
|
||
|
|
sb.append(',');
|
||
|
|
// Class objects can't occur here; no need to test
|
||
|
|
// and call Class.getName().
|
||
|
|
sb.append(typeparm.toString());
|
||
|
|
first = false;
|
||
|
|
}
|
||
|
|
sb.append("> ");
|
||
|
|
}
|
||
|
|
|
||
|
|
specificToGenericStringHeader(sb);
|
||
|
|
|
||
|
|
sb.append('(');
|
||
|
|
Type[] params = getGenericParameterTypes();
|
||
|
|
for (int j = 0; j < params.length; j++) {
|
||
|
|
String param = params[j].getTypeName();
|
||
|
|
if (isVarArgs() && (j == params.length - 1)) // replace T[] with T...
|
||
|
|
param = param.replaceFirst("\\[\\]$", "...");
|
||
|
|
sb.append(param);
|
||
|
|
if (j < (params.length - 1))
|
||
|
|
sb.append(',');
|
||
|
|
}
|
||
|
|
sb.append(')');
|
||
|
|
Type[] exceptions = getGenericExceptionTypes();
|
||
|
|
if (exceptions.length > 0) {
|
||
|
|
sb.append(" throws ");
|
||
|
|
for (int k = 0; k < exceptions.length; k++) {
|
||
|
|
sb.append((exceptions[k] instanceof Class)?
|
||
|
|
((Class)exceptions[k]).getName():
|
||
|
|
exceptions[k].toString());
|
||
|
|
if (k < (exceptions.length - 1))
|
||
|
|
sb.append(',');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return sb.toString();
|
||
|
|
} catch (Exception e) {
|
||
|
|
return "<" + e + ">";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate toGenericString header information specific to a
|
||
|
|
* method or constructor.
|
||
|
|
*/
|
||
|
|
abstract void specificToGenericStringHeader(StringBuilder sb);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the {@code Class} object representing the class or interface
|
||
|
|
* that declares the executable represented by this object.
|
||
|
|
*/
|
||
|
|
public abstract Class<?> getDeclaringClass();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the name of the executable represented by this object.
|
||
|
|
*/
|
||
|
|
public abstract String getName();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the Java language {@linkplain Modifier modifiers} for
|
||
|
|
* the executable represented by this object.
|
||
|
|
*/
|
||
|
|
public abstract int getModifiers();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code TypeVariable} objects that represent the
|
||
|
|
* type variables declared by the generic declaration represented by this
|
||
|
|
* {@code GenericDeclaration} object, in declaration order. Returns an
|
||
|
|
* array of length 0 if the underlying generic declaration declares no type
|
||
|
|
* variables.
|
||
|
|
*
|
||
|
|
* @return an array of {@code TypeVariable} objects that represent
|
||
|
|
* the type variables declared by this generic declaration
|
||
|
|
* @throws GenericSignatureFormatError if the generic
|
||
|
|
* signature of this generic declaration does not conform to
|
||
|
|
* the format specified in
|
||
|
|
* <cite>The Java™ Virtual Machine Specification</cite>
|
||
|
|
*/
|
||
|
|
public abstract TypeVariable<?>[] getTypeParameters();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Class} objects that represent the formal
|
||
|
|
* parameter types, in declaration order, of the executable
|
||
|
|
* represented by this object. Returns an array of length
|
||
|
|
* 0 if the underlying executable takes no parameters.
|
||
|
|
*
|
||
|
|
* @return the parameter types for the executable this object
|
||
|
|
* represents
|
||
|
|
*/
|
||
|
|
public abstract Class<?>[] getParameterTypes();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the number of formal parameters (whether explicitly
|
||
|
|
* declared or implicitly declared or neither) for the executable
|
||
|
|
* represented by this object.
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
* @return The number of formal parameters for the executable this
|
||
|
|
* object represents
|
||
|
|
*/
|
||
|
|
public int getParameterCount() {
|
||
|
|
throw new AbstractMethodError();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Type} objects that represent the formal
|
||
|
|
* parameter types, in declaration order, of the executable represented by
|
||
|
|
* this object. Returns an array of length 0 if the
|
||
|
|
* underlying executable takes no parameters.
|
||
|
|
*
|
||
|
|
* <p>If a formal parameter type is a parameterized type,
|
||
|
|
* the {@code Type} object returned for it must accurately reflect
|
||
|
|
* the actual type parameters used in the source code.
|
||
|
|
*
|
||
|
|
* <p>If a formal parameter type is a type variable or a parameterized
|
||
|
|
* type, it is created. Otherwise, it is resolved.
|
||
|
|
*
|
||
|
|
* @return an array of {@code Type}s that represent the formal
|
||
|
|
* parameter types of the underlying executable, in declaration order
|
||
|
|
* @throws GenericSignatureFormatError
|
||
|
|
* if the generic method signature does not conform to the format
|
||
|
|
* specified in
|
||
|
|
* <cite>The Java™ Virtual Machine Specification</cite>
|
||
|
|
* @throws TypeNotPresentException if any of the parameter
|
||
|
|
* types of the underlying executable refers to a non-existent type
|
||
|
|
* declaration
|
||
|
|
* @throws MalformedParameterizedTypeException if any of
|
||
|
|
* the underlying executable's parameter types refer to a parameterized
|
||
|
|
* type that cannot be instantiated for any reason
|
||
|
|
*/
|
||
|
|
public Type[] getGenericParameterTypes() {
|
||
|
|
if (hasGenericInformation())
|
||
|
|
return getGenericInfo().getParameterTypes();
|
||
|
|
else
|
||
|
|
return getParameterTypes();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Behaves like {@code getGenericParameterTypes}, but returns type
|
||
|
|
* information for all parameters, including synthetic parameters.
|
||
|
|
*/
|
||
|
|
Type[] getAllGenericParameterTypes() {
|
||
|
|
final boolean genericInfo = hasGenericInformation();
|
||
|
|
|
||
|
|
// Easy case: we don't have generic parameter information. In
|
||
|
|
// this case, we just return the result of
|
||
|
|
// getParameterTypes().
|
||
|
|
if (!genericInfo) {
|
||
|
|
return getParameterTypes();
|
||
|
|
} else {
|
||
|
|
final boolean realParamData = hasRealParameterData();
|
||
|
|
final Type[] genericParamTypes = getGenericParameterTypes();
|
||
|
|
final Type[] nonGenericParamTypes = getParameterTypes();
|
||
|
|
final Type[] out = new Type[nonGenericParamTypes.length];
|
||
|
|
final Parameter[] params = getParameters();
|
||
|
|
int fromidx = 0;
|
||
|
|
// If we have real parameter data, then we use the
|
||
|
|
// synthetic and mandate flags to our advantage.
|
||
|
|
if (realParamData) {
|
||
|
|
for (int i = 0; i < out.length; i++) {
|
||
|
|
final Parameter param = params[i];
|
||
|
|
if (param.isSynthetic() || param.isImplicit()) {
|
||
|
|
// If we hit a synthetic or mandated parameter,
|
||
|
|
// use the non generic parameter info.
|
||
|
|
out[i] = nonGenericParamTypes[i];
|
||
|
|
} else {
|
||
|
|
// Otherwise, use the generic parameter info.
|
||
|
|
out[i] = genericParamTypes[fromidx];
|
||
|
|
fromidx++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// Otherwise, use the non-generic parameter data.
|
||
|
|
// Without method parameter reflection data, we have
|
||
|
|
// no way to figure out which parameters are
|
||
|
|
// synthetic/mandated, thus, no way to match up the
|
||
|
|
// indexes.
|
||
|
|
return genericParamTypes.length == nonGenericParamTypes.length ?
|
||
|
|
genericParamTypes : nonGenericParamTypes;
|
||
|
|
}
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Parameter} objects that represent
|
||
|
|
* all the parameters to the underlying executable represented by
|
||
|
|
* this object. Returns an array of length 0 if the executable
|
||
|
|
* has no parameters.
|
||
|
|
*
|
||
|
|
* <p>The parameters of the underlying executable do not necessarily
|
||
|
|
* have unique names, or names that are legal identifiers in the
|
||
|
|
* Java programming language (JLS 3.8).
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
* @throws MalformedParametersException if the class file contains
|
||
|
|
* a MethodParameters attribute that is improperly formatted.
|
||
|
|
* @return an array of {@code Parameter} objects representing all
|
||
|
|
* the parameters to the executable this object represents.
|
||
|
|
*/
|
||
|
|
public Parameter[] getParameters() {
|
||
|
|
// TODO: This may eventually need to be guarded by security
|
||
|
|
// mechanisms similar to those in Field, Method, etc.
|
||
|
|
//
|
||
|
|
// Need to copy the cached array to prevent users from messing
|
||
|
|
// with it. Since parameters are immutable, we can
|
||
|
|
// shallow-copy.
|
||
|
|
return privateGetParameters().clone();
|
||
|
|
}
|
||
|
|
|
||
|
|
private Parameter[] synthesizeAllParams() {
|
||
|
|
final int realparams = getParameterCount();
|
||
|
|
final Parameter[] out = new Parameter[realparams];
|
||
|
|
for (int i = 0; i < realparams; i++)
|
||
|
|
// TODO: is there a way to synthetically derive the
|
||
|
|
// modifiers? Probably not in the general case, since
|
||
|
|
// we'd have no way of knowing about them, but there
|
||
|
|
// may be specific cases.
|
||
|
|
out[i] = new Parameter("arg" + i, 0, this, i);
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void verifyParameters(final Parameter[] parameters) {
|
||
|
|
final int mask = Modifier.FINAL | Modifier.SYNTHETIC | Modifier.MANDATED;
|
||
|
|
|
||
|
|
if (getParameterTypes().length != parameters.length)
|
||
|
|
throw new MalformedParametersException("Wrong number of parameters in MethodParameters attribute");
|
||
|
|
|
||
|
|
for (Parameter parameter : parameters) {
|
||
|
|
final String name = parameter.getRealName();
|
||
|
|
final int mods = parameter.getModifiers();
|
||
|
|
|
||
|
|
if (name != null) {
|
||
|
|
if (name.isEmpty() || name.indexOf('.') != -1 ||
|
||
|
|
name.indexOf(';') != -1 || name.indexOf('[') != -1 ||
|
||
|
|
name.indexOf('/') != -1) {
|
||
|
|
throw new MalformedParametersException("Invalid parameter name \"" + name + "\"");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mods != (mods & mask)) {
|
||
|
|
throw new MalformedParametersException("Invalid parameter modifiers");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private Parameter[] privateGetParameters() {
|
||
|
|
// Use tmp to avoid multiple writes to a volatile.
|
||
|
|
Parameter[] tmp = parameters;
|
||
|
|
|
||
|
|
if (tmp == null) {
|
||
|
|
|
||
|
|
// Otherwise, go to the JVM to get them
|
||
|
|
try {
|
||
|
|
tmp = getParameters0();
|
||
|
|
} catch(IllegalArgumentException e) {
|
||
|
|
// Rethrow ClassFormatErrors
|
||
|
|
throw new MalformedParametersException("Invalid constant pool index");
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we get back nothing, then synthesize parameters
|
||
|
|
if (tmp == null) {
|
||
|
|
hasRealParameterData = false;
|
||
|
|
tmp = synthesizeAllParams();
|
||
|
|
} else {
|
||
|
|
hasRealParameterData = true;
|
||
|
|
verifyParameters(tmp);
|
||
|
|
}
|
||
|
|
|
||
|
|
parameters = tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
return tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
boolean hasRealParameterData() {
|
||
|
|
// If this somehow gets called before parameters gets
|
||
|
|
// initialized, force it into existence.
|
||
|
|
if (parameters == null) {
|
||
|
|
privateGetParameters();
|
||
|
|
}
|
||
|
|
return hasRealParameterData;
|
||
|
|
}
|
||
|
|
|
||
|
|
private transient volatile boolean hasRealParameterData;
|
||
|
|
private transient volatile Parameter[] parameters;
|
||
|
|
|
||
|
|
private native Parameter[] getParameters0();
|
||
|
|
native byte[] getTypeAnnotationBytes0();
|
||
|
|
|
||
|
|
// Needed by reflectaccess
|
||
|
|
byte[] getTypeAnnotationBytes() {
|
||
|
|
return getTypeAnnotationBytes0();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Class} objects that represent the
|
||
|
|
* types of exceptions declared to be thrown by the underlying
|
||
|
|
* executable represented by this object. Returns an array of
|
||
|
|
* length 0 if the executable declares no exceptions in its {@code
|
||
|
|
* throws} clause.
|
||
|
|
*
|
||
|
|
* @return the exception types declared as being thrown by the
|
||
|
|
* executable this object represents
|
||
|
|
*/
|
||
|
|
public abstract Class<?>[] getExceptionTypes();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Type} objects that represent the
|
||
|
|
* exceptions declared to be thrown by this executable object.
|
||
|
|
* Returns an array of length 0 if the underlying executable declares
|
||
|
|
* no exceptions in its {@code throws} clause.
|
||
|
|
*
|
||
|
|
* <p>If an exception type is a type variable or a parameterized
|
||
|
|
* type, it is created. Otherwise, it is resolved.
|
||
|
|
*
|
||
|
|
* @return an array of Types that represent the exception types
|
||
|
|
* thrown by the underlying executable
|
||
|
|
* @throws GenericSignatureFormatError
|
||
|
|
* if the generic method signature does not conform to the format
|
||
|
|
* specified in
|
||
|
|
* <cite>The Java™ Virtual Machine Specification</cite>
|
||
|
|
* @throws TypeNotPresentException if the underlying executable's
|
||
|
|
* {@code throws} clause refers to a non-existent type declaration
|
||
|
|
* @throws MalformedParameterizedTypeException if
|
||
|
|
* the underlying executable's {@code throws} clause refers to a
|
||
|
|
* parameterized type that cannot be instantiated for any reason
|
||
|
|
*/
|
||
|
|
public Type[] getGenericExceptionTypes() {
|
||
|
|
Type[] result;
|
||
|
|
if (hasGenericInformation() &&
|
||
|
|
((result = getGenericInfo().getExceptionTypes()).length > 0))
|
||
|
|
return result;
|
||
|
|
else
|
||
|
|
return getExceptionTypes();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a string describing this {@code Executable}, including
|
||
|
|
* any type parameters.
|
||
|
|
* @return a string describing this {@code Executable}, including
|
||
|
|
* any type parameters
|
||
|
|
*/
|
||
|
|
public abstract String toGenericString();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns {@code true} if this executable was declared to take a
|
||
|
|
* variable number of arguments; returns {@code false} otherwise.
|
||
|
|
*
|
||
|
|
* @return {@code true} if an only if this executable was declared
|
||
|
|
* to take a variable number of arguments.
|
||
|
|
*/
|
||
|
|
public boolean isVarArgs() {
|
||
|
|
return (getModifiers() & Modifier.VARARGS) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns {@code true} if this executable is a synthetic
|
||
|
|
* construct; returns {@code false} otherwise.
|
||
|
|
*
|
||
|
|
* @return true if and only if this executable is a synthetic
|
||
|
|
* construct as defined by
|
||
|
|
* <cite>The Java™ Language Specification</cite>.
|
||
|
|
* @jls 13.1 The Form of a Binary
|
||
|
|
*/
|
||
|
|
public boolean isSynthetic() {
|
||
|
|
return Modifier.isSynthetic(getModifiers());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of arrays of {@code Annotation}s that
|
||
|
|
* represent the annotations on the formal parameters, in
|
||
|
|
* declaration order, of the {@code Executable} represented by
|
||
|
|
* this object. Synthetic and mandated parameters (see
|
||
|
|
* explanation below), such as the outer "this" parameter to an
|
||
|
|
* inner class constructor will be represented in the returned
|
||
|
|
* array. If the executable has no parameters (meaning no formal,
|
||
|
|
* no synthetic, and no mandated parameters), a zero-length array
|
||
|
|
* will be returned. If the {@code Executable} has one or more
|
||
|
|
* parameters, a nested array of length zero is returned for each
|
||
|
|
* parameter with no annotations. The annotation objects contained
|
||
|
|
* in the returned arrays are serializable. The caller of this
|
||
|
|
* method is free to modify the returned arrays; it will have no
|
||
|
|
* effect on the arrays returned to other callers.
|
||
|
|
*
|
||
|
|
* A compiler may add extra parameters that are implicitly
|
||
|
|
* declared in source ("mandated"), as well as parameters that
|
||
|
|
* are neither implicitly nor explicitly declared in source
|
||
|
|
* ("synthetic") to the parameter list for a method. See {@link
|
||
|
|
* java.lang.reflect.Parameter} for more information.
|
||
|
|
*
|
||
|
|
* @see java.lang.reflect.Parameter
|
||
|
|
* @see java.lang.reflect.Parameter#getAnnotations
|
||
|
|
* @return an array of arrays that represent the annotations on
|
||
|
|
* the formal and implicit parameters, in declaration order, of
|
||
|
|
* the executable represented by this object
|
||
|
|
*/
|
||
|
|
public abstract Annotation[][] getParameterAnnotations();
|
||
|
|
|
||
|
|
Annotation[][] sharedGetParameterAnnotations(Class<?>[] parameterTypes) {
|
||
|
|
int numParameters = parameterTypes.length;
|
||
|
|
|
||
|
|
Annotation[][] result = sharedGetParameterAnnotationsImpl();
|
||
|
|
if (result == null)
|
||
|
|
return new Annotation[numParameters][0];
|
||
|
|
|
||
|
|
if (result.length != numParameters)
|
||
|
|
handleParameterNumberMismatch(result.length, numParameters);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
private native Annotation[][] sharedGetParameterAnnotationsImpl();
|
||
|
|
|
||
|
|
abstract void handleParameterNumberMismatch(int resultLength, int numParameters);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
* @throws NullPointerException {@inheritDoc}
|
||
|
|
*/
|
||
|
|
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
|
||
|
|
Objects.requireNonNull(annotationClass);
|
||
|
|
return annotationClass.cast(declaredAnnotations().get(annotationClass));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
* @throws NullPointerException {@inheritDoc}
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass) {
|
||
|
|
Objects.requireNonNull(annotationClass);
|
||
|
|
|
||
|
|
return AnnotationSupport.getDirectlyAndIndirectlyPresent(declaredAnnotations(), annotationClass);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
*/
|
||
|
|
public Annotation[] getDeclaredAnnotations() {
|
||
|
|
return AnnotationParser.toArray(declaredAnnotations());
|
||
|
|
}
|
||
|
|
|
||
|
|
private transient Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
|
||
|
|
|
||
|
|
private synchronized Map<Class<? extends Annotation>, Annotation> declaredAnnotations() {
|
||
|
|
if (declaredAnnotations == null) {
|
||
|
|
Executable root = getRoot();
|
||
|
|
if (root != null) {
|
||
|
|
declaredAnnotations = root.declaredAnnotations();
|
||
|
|
} else {
|
||
|
|
declaredAnnotations = declaredAnnotationsImpl();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return declaredAnnotations;
|
||
|
|
}
|
||
|
|
|
||
|
|
private native Map<Class<? extends Annotation>, Annotation> declaredAnnotationsImpl();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an {@code AnnotatedType} object that represents the use of a type to
|
||
|
|
* specify the return type of the method/constructor represented by this
|
||
|
|
* Executable.
|
||
|
|
*
|
||
|
|
* If this {@code Executable} object represents a constructor, the {@code
|
||
|
|
* AnnotatedType} object represents the type of the constructed object.
|
||
|
|
*
|
||
|
|
* If this {@code Executable} object represents a method, the {@code
|
||
|
|
* AnnotatedType} object represents the use of a type to specify the return
|
||
|
|
* type of the method.
|
||
|
|
*
|
||
|
|
* @return an object representing the return type of the method
|
||
|
|
* or constructor represented by this {@code Executable}
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public abstract AnnotatedType getAnnotatedReturnType();
|
||
|
|
|
||
|
|
/* Helper for subclasses of Executable.
|
||
|
|
*
|
||
|
|
* Returns an AnnotatedType object that represents the use of a type to
|
||
|
|
* specify the return type of the method/constructor represented by this
|
||
|
|
* Executable.
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
AnnotatedType getAnnotatedReturnType0(Type returnType) {
|
||
|
|
return TypeAnnotationParser.buildAnnotatedType(getTypeAnnotationBytes0(),
|
||
|
|
sun.misc.SharedSecrets.getJavaLangAccess().
|
||
|
|
getConstantPool(getDeclaringClass()),
|
||
|
|
this,
|
||
|
|
getDeclaringClass(),
|
||
|
|
returnType,
|
||
|
|
TypeAnnotation.TypeAnnotationTarget.METHOD_RETURN);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an {@code AnnotatedType} object that represents the use of a
|
||
|
|
* type to specify the receiver type of the method/constructor represented
|
||
|
|
* by this Executable object. The receiver type of a method/constructor is
|
||
|
|
* available only if the method/constructor has a <em>receiver
|
||
|
|
* parameter</em> (JLS 8.4.1).
|
||
|
|
*
|
||
|
|
* If this {@code Executable} object represents a constructor or instance
|
||
|
|
* method that does not have a receiver parameter, or has a receiver
|
||
|
|
* parameter with no annotations on its type, then the return value is an
|
||
|
|
* {@code AnnotatedType} object representing an element with no
|
||
|
|
* annotations.
|
||
|
|
*
|
||
|
|
* If this {@code Executable} object represents a static method, then the
|
||
|
|
* return value is null.
|
||
|
|
*
|
||
|
|
* @return an object representing the receiver type of the method or
|
||
|
|
* constructor represented by this {@code Executable}
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public AnnotatedType getAnnotatedReceiverType() {
|
||
|
|
if (Modifier.isStatic(this.getModifiers()))
|
||
|
|
return null;
|
||
|
|
return TypeAnnotationParser.buildAnnotatedType(getTypeAnnotationBytes0(),
|
||
|
|
sun.misc.SharedSecrets.getJavaLangAccess().
|
||
|
|
getConstantPool(getDeclaringClass()),
|
||
|
|
this,
|
||
|
|
getDeclaringClass(),
|
||
|
|
getDeclaringClass(),
|
||
|
|
TypeAnnotation.TypeAnnotationTarget.METHOD_RECEIVER);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code AnnotatedType} objects that represent the use
|
||
|
|
* of types to specify formal parameter types of the method/constructor
|
||
|
|
* represented by this Executable. The order of the objects in the array
|
||
|
|
* corresponds to the order of the formal parameter types in the
|
||
|
|
* declaration of the method/constructor.
|
||
|
|
*
|
||
|
|
* Returns an array of length 0 if the method/constructor declares no
|
||
|
|
* parameters.
|
||
|
|
*
|
||
|
|
* @return an array of objects representing the types of the
|
||
|
|
* formal parameters of the method or constructor represented by this
|
||
|
|
* {@code Executable}
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public AnnotatedType[] getAnnotatedParameterTypes() {
|
||
|
|
return TypeAnnotationParser.buildAnnotatedTypes(getTypeAnnotationBytes0(),
|
||
|
|
sun.misc.SharedSecrets.getJavaLangAccess().
|
||
|
|
getConstantPool(getDeclaringClass()),
|
||
|
|
this,
|
||
|
|
getDeclaringClass(),
|
||
|
|
getAllGenericParameterTypes(),
|
||
|
|
TypeAnnotation.TypeAnnotationTarget.METHOD_FORMAL_PARAMETER);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code AnnotatedType} objects that represent the use
|
||
|
|
* of types to specify the declared exceptions of the method/constructor
|
||
|
|
* represented by this Executable. The order of the objects in the array
|
||
|
|
* corresponds to the order of the exception types in the declaration of
|
||
|
|
* the method/constructor.
|
||
|
|
*
|
||
|
|
* Returns an array of length 0 if the method/constructor declares no
|
||
|
|
* exceptions.
|
||
|
|
*
|
||
|
|
* @return an array of objects representing the declared
|
||
|
|
* exceptions of the method or constructor represented by this {@code
|
||
|
|
* Executable}
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public AnnotatedType[] getAnnotatedExceptionTypes() {
|
||
|
|
return TypeAnnotationParser.buildAnnotatedTypes(getTypeAnnotationBytes0(),
|
||
|
|
sun.misc.SharedSecrets.getJavaLangAccess().
|
||
|
|
getConstantPool(getDeclaringClass()),
|
||
|
|
this,
|
||
|
|
getDeclaringClass(),
|
||
|
|
getGenericExceptionTypes(),
|
||
|
|
TypeAnnotation.TypeAnnotationTarget.THROWS);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|