751 lines
28 KiB
Java
751 lines
28 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 dalvik.annotation.optimization.FastNative;
|
||
|
|
|
||
|
|
import java.lang.annotation.Annotation;
|
||
|
|
import java.util.Objects;
|
||
|
|
import libcore.reflect.AnnotatedElements;
|
||
|
|
import libcore.reflect.GenericSignatureParser;
|
||
|
|
import libcore.reflect.ListOfTypes;
|
||
|
|
import libcore.reflect.Types;
|
||
|
|
import libcore.util.EmptyArray;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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 {
|
||
|
|
|
||
|
|
// Android-changed: Extensive modifications made throughout the class for ART.
|
||
|
|
// Android-removed: Declared vs actual parameter annotation indexes handling.
|
||
|
|
// Android-removed: Type annotations runtime code. Not supported on Android.
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Only grant package-visibility to the constructor.
|
||
|
|
*/
|
||
|
|
Executable() {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Does the Executable have generic information.
|
||
|
|
*/
|
||
|
|
abstract boolean hasGenericInformation();
|
||
|
|
|
||
|
|
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.
|
||
|
|
*
|
||
|
|
* @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() {
|
||
|
|
// Android-changed: getGenericParameterTypes() implementation for use with ART.
|
||
|
|
return Types.getTypeArray(
|
||
|
|
getMethodOrConstructorGenericInfoInternal().genericParameterTypes, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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).
|
||
|
|
*
|
||
|
|
* @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
|
||
|
|
// Android-changed: Exception changed to be more descriptive.
|
||
|
|
MalformedParametersException e2 =
|
||
|
|
new MalformedParametersException(
|
||
|
|
"Invalid parameter metadata in class file");
|
||
|
|
e2.initCause(e);
|
||
|
|
throw e2;
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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;
|
||
|
|
|
||
|
|
// Android-changed: Added @FastNative to getParameters0()
|
||
|
|
@FastNative
|
||
|
|
private native Parameter[] getParameters0();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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() {
|
||
|
|
// Android-changed: getGenericExceptionTypes() implementation for use with ART.
|
||
|
|
return Types.getTypeArray(
|
||
|
|
getMethodOrConstructorGenericInfoInternal().genericExceptionTypes, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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() {
|
||
|
|
// Android-changed: isVarArgs() made slightly more efficient.
|
||
|
|
return (accessFlags & 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() {
|
||
|
|
// Android-changed: isSynthetic() made slightly more efficient.
|
||
|
|
return (accessFlags & Modifier.SYNTHETIC) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
* @throws NullPointerException {@inheritDoc}
|
||
|
|
*/
|
||
|
|
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
|
||
|
|
Objects.requireNonNull(annotationClass);
|
||
|
|
// Android-changed: Implemented getAnnotation(Class) natively.
|
||
|
|
return getAnnotationNative(annotationClass);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Android-changed: Implemented getAnnotation(Class) natively.
|
||
|
|
@FastNative
|
||
|
|
private native <T extends Annotation> T getAnnotationNative(Class<T> annotationClass);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
* @throws NullPointerException {@inheritDoc}
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass) {
|
||
|
|
// Android-changed: getAnnotationsByType(Class), Android uses AnnotatedElements instead.
|
||
|
|
return AnnotatedElements.getDirectOrIndirectAnnotationsByType(this, annotationClass);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* {@inheritDoc}
|
||
|
|
*/
|
||
|
|
public Annotation[] getDeclaredAnnotations() {
|
||
|
|
// Android-changed: Implemented getDeclaredAnnotations() natively.
|
||
|
|
return getDeclaredAnnotationsNative();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Android-added: Implemented getDeclaredAnnotations() natively.
|
||
|
|
@FastNative
|
||
|
|
private native Annotation[] getDeclaredAnnotationsNative();
|
||
|
|
|
||
|
|
// BEGIN Android-added: Additional ART-related fields and logic.
|
||
|
|
// This code is shared for Method and Constructor.
|
||
|
|
|
||
|
|
/** Bits encoding access (e.g. public, private) as well as other runtime specific flags */
|
||
|
|
@SuppressWarnings("unused") // set by runtime
|
||
|
|
private int accessFlags;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The ArtMethod associated with this Executable, required for dispatching due to entrypoints
|
||
|
|
* Classloader is held live by the declaring class.
|
||
|
|
*/
|
||
|
|
@SuppressWarnings("unused") // set by runtime
|
||
|
|
private long artMethod;
|
||
|
|
|
||
|
|
/** Executable's declaring class */
|
||
|
|
@SuppressWarnings("unused") // set by runtime
|
||
|
|
private Class<?> declaringClass;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Overriden method's declaring class (same as declaringClass unless declaringClass is a proxy
|
||
|
|
* class).
|
||
|
|
*/
|
||
|
|
@SuppressWarnings("unused") // set by runtime
|
||
|
|
private Class<?> declaringClassOfOverriddenMethod;
|
||
|
|
|
||
|
|
/** The method index of this method within its defining dex file */
|
||
|
|
@SuppressWarnings("unused") // set by runtime
|
||
|
|
private int dexMethodIndex;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* We insert native method stubs for abstract methods so we don't have to
|
||
|
|
* check the access flags at the time of the method call. This results in
|
||
|
|
* "native abstract" methods, which can't exist. If we see the "abstract"
|
||
|
|
* flag set, clear the "native" flag.
|
||
|
|
*
|
||
|
|
* We also move the DECLARED_SYNCHRONIZED flag into the SYNCHRONIZED
|
||
|
|
* position, because the callers of this function are trying to convey
|
||
|
|
* the "traditional" meaning of the flags to their callers.
|
||
|
|
*/
|
||
|
|
private static int fixMethodFlags(int flags) {
|
||
|
|
if ((flags & Modifier.ABSTRACT) != 0) {
|
||
|
|
flags &= ~Modifier.NATIVE;
|
||
|
|
}
|
||
|
|
flags &= ~Modifier.SYNCHRONIZED;
|
||
|
|
int ACC_DECLARED_SYNCHRONIZED = 0x00020000;
|
||
|
|
if ((flags & ACC_DECLARED_SYNCHRONIZED) != 0) {
|
||
|
|
flags |= Modifier.SYNCHRONIZED;
|
||
|
|
}
|
||
|
|
return flags & 0xffff; // mask out bits not used by Java
|
||
|
|
}
|
||
|
|
|
||
|
|
final int getModifiersInternal() {
|
||
|
|
return fixMethodFlags(accessFlags);
|
||
|
|
}
|
||
|
|
|
||
|
|
final Class<?> getDeclaringClassInternal() {
|
||
|
|
return declaringClass;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of {@code Class} objects associated with the parameter types of this
|
||
|
|
* Executable. If the Executable was declared with no parameters, {@code null} will be
|
||
|
|
* returned.
|
||
|
|
*
|
||
|
|
* @return the parameter types, or {@code null} if no parameters were declared.
|
||
|
|
*/
|
||
|
|
@FastNative
|
||
|
|
final native Class<?>[] getParameterTypesInternal();
|
||
|
|
|
||
|
|
@FastNative
|
||
|
|
final native int getParameterCountInternal();
|
||
|
|
|
||
|
|
// Android provides a more efficient implementation of this method for Executable than the one
|
||
|
|
// implemented in AnnotatedElement.
|
||
|
|
@Override
|
||
|
|
public final boolean isAnnotationPresent(Class<? extends Annotation> annotationType) {
|
||
|
|
Objects.requireNonNull(annotationType);
|
||
|
|
return isAnnotationPresentNative(annotationType);
|
||
|
|
}
|
||
|
|
@FastNative
|
||
|
|
private native boolean isAnnotationPresentNative(Class<? extends Annotation> annotationType);
|
||
|
|
|
||
|
|
final Annotation[][] getParameterAnnotationsInternal() {
|
||
|
|
Annotation[][] parameterAnnotations = getParameterAnnotationsNative();
|
||
|
|
if (parameterAnnotations == null) {
|
||
|
|
parameterAnnotations = new Annotation[getParameterTypes().length][0];
|
||
|
|
}
|
||
|
|
return parameterAnnotations;
|
||
|
|
}
|
||
|
|
@FastNative
|
||
|
|
private native Annotation[][] getParameterAnnotationsNative();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @hide - exposed for use by {@link Class}.
|
||
|
|
*/
|
||
|
|
public final int getAccessFlags() {
|
||
|
|
return accessFlags;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @hide - exposed for use by {@code java.lang.invoke.*}.
|
||
|
|
*/
|
||
|
|
public final long getArtMethod() {
|
||
|
|
return artMethod;
|
||
|
|
}
|
||
|
|
|
||
|
|
static final class GenericInfo {
|
||
|
|
final ListOfTypes genericExceptionTypes;
|
||
|
|
final ListOfTypes genericParameterTypes;
|
||
|
|
final Type genericReturnType;
|
||
|
|
final TypeVariable<?>[] formalTypeParameters;
|
||
|
|
|
||
|
|
GenericInfo(ListOfTypes exceptions, ListOfTypes parameters, Type ret,
|
||
|
|
TypeVariable<?>[] formal) {
|
||
|
|
genericExceptionTypes = exceptions;
|
||
|
|
genericParameterTypes = parameters;
|
||
|
|
genericReturnType = ret;
|
||
|
|
formalTypeParameters = formal;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
final boolean hasGenericInformationInternal() {
|
||
|
|
return getSignatureAnnotation() != null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns generic information associated with this method/constructor member.
|
||
|
|
*/
|
||
|
|
final GenericInfo getMethodOrConstructorGenericInfoInternal() {
|
||
|
|
String signatureAttribute = getSignatureAttribute();
|
||
|
|
Class<?>[] exceptionTypes = this.getExceptionTypes();
|
||
|
|
GenericSignatureParser parser =
|
||
|
|
new GenericSignatureParser(this.getDeclaringClass().getClassLoader());
|
||
|
|
if (this instanceof Method) {
|
||
|
|
parser.parseForMethod(this, signatureAttribute, exceptionTypes);
|
||
|
|
} else {
|
||
|
|
parser.parseForConstructor(this, signatureAttribute, exceptionTypes);
|
||
|
|
}
|
||
|
|
return new GenericInfo(parser.exceptionTypes, parser.parameterTypes,
|
||
|
|
parser.returnType, parser.formalTypeParameters);
|
||
|
|
}
|
||
|
|
|
||
|
|
private String getSignatureAttribute() {
|
||
|
|
String[] annotation = getSignatureAnnotation();
|
||
|
|
if (annotation == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
StringBuilder result = new StringBuilder();
|
||
|
|
for (String s : annotation) {
|
||
|
|
result.append(s);
|
||
|
|
}
|
||
|
|
return result.toString();
|
||
|
|
}
|
||
|
|
@FastNative
|
||
|
|
private native String[] getSignatureAnnotation();
|
||
|
|
|
||
|
|
final boolean equalNameAndParametersInternal(Method m) {
|
||
|
|
return getName().equals(m.getName()) && (compareMethodParametersInternal(m) == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
@FastNative
|
||
|
|
native int compareMethodParametersInternal(Method meth);
|
||
|
|
|
||
|
|
@FastNative
|
||
|
|
final native String getMethodNameInternal();
|
||
|
|
|
||
|
|
@FastNative
|
||
|
|
final native Class<?> getMethodReturnTypeInternal();
|
||
|
|
|
||
|
|
/** A cheap implementation for {@link Method#isDefault()}. */
|
||
|
|
final boolean isDefaultMethodInternal() {
|
||
|
|
return (accessFlags & Modifier.DEFAULT) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** A cheap implementation for {@link Method#isBridge()}. */
|
||
|
|
final boolean isBridgeMethodInternal() {
|
||
|
|
return (accessFlags & Modifier.BRIDGE) != 0;
|
||
|
|
}
|
||
|
|
// END Android-added: Additional ART-related fields and logic.
|
||
|
|
|
||
|
|
}
|