/*
* Copyright (c) 2008, 2011, 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.invoke;
import sun.invoke.util.BytecodeDescriptor;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Member;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import static java.lang.invoke.MethodHandleNatives.Constants.*;
import static java.lang.invoke.MethodHandleStatics.*;
/**
* A {@code MemberName} is a compact symbolic datum which fully characterizes
* a method or field reference.
* A member name refers to a field, method, constructor, or member type.
* Every member name has a simple name (a string) and a type (either a Class or MethodType).
* A member name may also have a non-null declaring class, or it may be simply
* a naked name/type pair.
* A member name may also have non-zero modifier flags.
* Finally, a member name may be either resolved or unresolved.
* If it is resolved, the existence of the named
* <p>
* Whether resolved or not, a member name provides no access rights or
* invocation capability to its possessor. It is merely a compact
* representation of all symbolic information necessary to link to
* and properly use the named member.
* <p>
* When resolved, a member name's internal implementation may include references to JVM metadata.
* This representation is stateless and only decriptive.
* It provides no private information and no capability to use the member.
* <p>
* By contrast, a {@linkplain java.lang.reflect.Method} contains fuller information
* about the internals of a method (except its bytecodes) and also
* allows invocation. A MemberName is much lighter than a Method,
* since it contains about 7 fields to the 16 of Method (plus its sub-arrays),
* and those seven fields omit much of the information in Method.
* @author jrose
*/
/*non-public*/ final class MemberName implements Member, Cloneable {
private Class<?> clazz; // class in which the method is defined
private String name; // may be null if not yet materialized
private Object type; // may be null if not yet materialized
private int flags; // modifier bits; see reflect.Modifier
private Object vmtarget; // VM-specific target value
private int vmindex; // method index within class or interface
{ vmindex = VM_INDEX_UNINITIALIZED; }
/** Return the declaring class of this member.
* In the case of a bare name and type, the declaring class will be null.
*/
public Class<?> getDeclaringClass() {
if (clazz == null && isResolved()) {
expandFromVM();
}
return clazz;
}
/** Utility method producing the class loader of the declaring class. */
public ClassLoader getClassLoader() {
return clazz.getClassLoader();
}
/** Return the simple name of this member.
* For a type, it is the same as {@link Class#getSimpleName}.
* For a method or field, it is the simple name of the member.
* For a constructor, it is always {@code "<init>"}.
*/
public String getName() {
if (name == null) {
expandFromVM();
if (name == null) return null;
}
return name;
}
/** Return the declared type of this member, which
* must be a method or constructor.
*/
public MethodType getMethodType() {
if (type == null) {
expandFromVM();
if (type == null) return null;
}
if (!isInvocable())
throw newIllegalArgumentException("not invocable, no method type");
if (type instanceof MethodType) {
return (MethodType) type;
}
if (type instanceof String) {
String sig = (String) type;
MethodType res = MethodType.fromMethodDescriptorString(sig, getClassLoader());
this.type = res;
return res;
}
if (type instanceof Object[]) {
Object[] typeInfo = (Object[]) type;
Class<?>[] ptypes = (Class<?>[]) typeInfo[1];
Class<?> rtype = (Class<?>) typeInfo[0];
MethodType res = MethodType.methodType(rtype, ptypes);
this.type = res;
return res;
}
throw new InternalError("bad method type "+type);
}
/** Return the actual type under which this method or constructor must be invoked.
* For non-static methods or constructors, this is the type with a leading parameter,
* a reference to declaring class. For static methods, it is the same as the declared type.
*/
public MethodType getInvocationType() {
MethodType itype = getMethodType();
if (!isStatic())
itype = itype.insertParameterTypes(0, clazz);
return itype;
}
/** Utility method producing the parameter types of the method type. */
public Class<?>[] getParameterTypes() {
return getMethodType().parameterArray();
}
/** Utility method producing the return type of the method type. */
public Class<?> getReturnType() {
return getMethodType().returnType();
}
/** Return the declared type of this member, which
* must be a field or type.
* If it is a type member, that type itself is returned.
*/
public Class<?> getFieldType() {
if (type == null) {
expandFromVM();
if (type == null) return null;
}
if (isInvocable())
throw newIllegalArgumentException("not a field or nested class, no simple type");
if (type instanceof Class<?>) {
return (Class<?>) type;
}
if (type instanceof String) {
String sig = (String) type;
MethodType mtype = MethodType.fromMethodDescriptorString("()"+sig, getClassLoader());
Class<?> res = mtype.returnType();
this.type = res;
return res;
}
throw new InternalError("bad field type "+type);
}
/** Utility method to produce either the method type or field type of this member. */
public Object getType() {
return (isInvocable() ? getMethodType() : getFieldType());
}
/** Utility method to produce the signature of this member,
* used within the class file format to describe its type.
*/
public String getSignature() {
if (type == null) {
expandFromVM();
if (type == null) return null;
}
if (type instanceof String)
return (String) type;
if (isInvocable())
return BytecodeDescriptor.unparse(getMethodType());
else
return BytecodeDescriptor.unparse(getFieldType());
}
/** Return the modifier flags of this member.
* @see java.lang.reflect.Modifier
*/
public int getModifiers() {
return (flags & RECOGNIZED_MODIFIERS);
}
private void setFlags(int flags) {
this.flags = flags;
assert(testAnyFlags(ALL_KINDS));
}
private boolean testFlags(int mask, int value) {
return (flags & mask) == value;
}
private boolean testAllFlags(int mask) {
return testFlags(mask, mask);
}
private boolean testAnyFlags(int mask) {
return !testFlags(mask, 0);
}
/** Utility method to query the modifier flags of this member. */
public boolean isStatic() {
return Modifier.isStatic(flags);
}
/** Utility method to query the modifier flags of this member. */
public boolean isPublic() {
return Modifier.isPublic(flags);
}
/** Utility method to query the modifier flags of this member. */
public boolean isPrivate() {
return Modifier.isPrivate(flags);
}
/** Utility method to query the modifier flags of this member. */
public boolean isProtected() {
return Modifier.isProtected(flags);
}
/** Utility method to query the modifier flags of this member. */
public boolean isFinal() {
return Modifier.isFinal(flags);
}
/** Utility method to query the modifier flags of this member. */
public boolean isAbstract() {
return Modifier.isAbstract(flags);
}
// let the rest (native, volatile, transient, etc.) be tested via Modifier.isFoo
// unofficial modifier flags, used by HotSpot:
static final int BRIDGE = 0x00000040;
static final int VARARGS = 0x00000080;
static final int SYNTHETIC = 0x00001000;
static final int ANNOTATION= 0x00002000;
static final int ENUM = 0x00004000;
/** Utility method to query the modifier flags of this member; returns false if the member is not a method. */
public boolean isBridge() {
return testAllFlags(IS_METHOD | BRIDGE);
}
/** Utility method to query the modifier flags of this member; returns false if the member is not a method. */
public boolean isVarargs() {
return testAllFlags(VARARGS) && isInvocable();
}
/** Utility method to query the modifier flags of this member; returns false if the member is not a method. */
public boolean isSynthetic() {
return testAllFlags(SYNTHETIC);
}
static final String CONSTRUCTOR_NAME = "<init>"; // the ever-popular
// modifiers exported by the JVM:
static final int RECOGNIZED_MODIFIERS = 0xFFFF;
// private flags, not part of RECOGNIZED_MODIFIERS:
static final int
IS_METHOD = MN_IS_METHOD, // method (not constructor)
IS_CONSTRUCTOR = MN_IS_CONSTRUCTOR, // constructor
IS_FIELD = MN_IS_FIELD, // field
IS_TYPE = MN_IS_TYPE; // nested type
static final int // for MethodHandleNatives.getMembers
SEARCH_SUPERCLASSES = MN_SEARCH_SUPERCLASSES,
SEARCH_INTERFACES = MN_SEARCH_INTERFACES;
static final int ALL_ACCESS = Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED;
static final int ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE;
static final int IS_INVOCABLE = IS_METHOD | IS_CONSTRUCTOR;
static final int IS_FIELD_OR_METHOD = IS_METHOD | IS_FIELD;
static final int SEARCH_ALL_SUPERS = SEARCH_SUPERCLASSES | SEARCH_INTERFACES;
/** Utility method to query whether this member is a method or constructor. */
public boolean isInvocable() {
return testAnyFlags(IS_INVOCABLE);
}
/** Utility method to query whether this member is a method, constructor, or field. */
public boolean isFieldOrMethod() {
return testAnyFlags(IS_FIELD_OR_METHOD);
}
/** Query whether this member is a method. */
public boolean isMethod() {
return testAllFlags(IS_METHOD);
}
/** Query whether this member is a constructor. */
public boolean isConstructor() {
return testAllFlags(IS_CONSTRUCTOR);
}
/** Query whether this member is a field. */
public boolean isField() {
return testAllFlags(IS_FIELD);
}
/** Query whether this member is a type. */
public boolean isType() {
return testAllFlags(IS_TYPE);
}
/** Utility method to query whether this member is neither public, private, nor protected. */
public boolean isPackage() {
return !testAnyFlags(ALL_ACCESS);
}
/** Initialize a query. It is not resolved. */
private void init(Class<?> defClass, String name, Object type, int flags) {
// defining class is allowed to be null (for a naked name/type pair)
//name.toString(); // null check
//type.equals(type); // null check
// fill in fields:
this.clazz = defClass;
this.name = name;
this.type = type;
setFlags(flags);
assert(!isResolved());
}
private void expandFromVM() {
if (!isResolved()) return;
if (type instanceof Object[])
type = null; // don't saddle JVM w/ typeInfo
MethodHandleNatives.expand(this);
}
// Capturing information from the Core Reflection API:
private static int flagsMods(int flags, int mods) {
assert((flags & RECOGNIZED_MODIFIERS) == 0);
assert((mods & ~RECOGNIZED_MODIFIERS) == 0);
return flags | mods;
}
/** Create a name for the given reflected method. The resulting name will be in a resolved state. */
public MemberName(Method m) {
Object[] typeInfo = { m.getReturnType(), m.getParameterTypes() };
init(m.getDeclaringClass(), m.getName(), typeInfo, flagsMods(IS_METHOD, m.getModifiers()));
// fill in vmtarget, vmindex while we have m in hand:
MethodHandleNatives.init(this, m);
assert(isResolved());
}
/** Create a name for the given reflected constructor. The resulting name will be in a resolved state. */
public MemberName(Constructor ctor) {
Object[] typeInfo = { void.class, ctor.getParameterTypes() };
init(ctor.getDeclaringClass(), CONSTRUCTOR_NAME, typeInfo, flagsMods(IS_CONSTRUCTOR, ctor.getModifiers()));
// fill in vmtarget, vmindex while we have ctor in hand:
MethodHandleNatives.init(this, ctor);
assert(isResolved());
}
/** Create a name for the given reflected field. The resulting name will be in a resolved state. */
public MemberName(Field fld) {
init(fld.getDeclaringClass(), fld.getName(), fld.getType(), flagsMods(IS_FIELD, fld.getModifiers()));
// fill in vmtarget, vmindex while we have fld in hand:
MethodHandleNatives.init(this, fld);
assert(isResolved());
}
/** Create a name for the given class. The resulting name will be in a resolved state. */
public MemberName(Class<?> type) {
init(type.getDeclaringClass(), type.getSimpleName(), type, flagsMods(IS_TYPE, type.getModifiers()));
vmindex = 0; // isResolved
assert(isResolved());
}
// bare-bones constructor; the JVM will fill it in
MemberName() { }
// locally useful cloner
@Override protected MemberName clone() {
try {
return (MemberName) super.clone();
} catch (CloneNotSupportedException ex) {
throw new InternalError();
}
}
// %%% define equals/hashcode?
// Construction from symbolic parts, for queries:
/** Create a field or type name from the given components: Declaring class, name, type, modifiers.
* The declaring class may be supplied as null if this is to be a bare name and type.
* The resulting name will in an unresolved state.
*/
public MemberName(Class<?> defClass, String name, Class<?> type, int modifiers) {
init(defClass, name, type, IS_FIELD | (modifiers & RECOGNIZED_MODIFIERS));
}
/** Create a field or type name from the given components: Declaring class, name, type.
* The declaring class may be supplied as null if this is to be a bare name and type.
* The modifier flags default to zero.
* The resulting name will in an unresolved state.
*/
public MemberName(Class<?> defClass, String name, Class<?> type) {
this(defClass, name, type, 0);
}
/** Create a method or constructor name from the given components: Declaring class, name, type, modifiers.
* It will be a constructor if and only if the name is {@code "<init>"}.
* The declaring class may be supplied as null if this is to be a bare name and type.
* The resulting name will in an unresolved state.
*/
public MemberName(Class<?> defClass, String name, MethodType type, int modifiers) {
int flagBit = (name.equals(CONSTRUCTOR_NAME) ? IS_CONSTRUCTOR : IS_METHOD);
init(defClass, name, type, flagBit | (modifiers & RECOGNIZED_MODIFIERS));
}
/** Create a method or constructor name from the given components: Declaring class, name, type, modifiers.
* It will be a constructor if and only if the name is {@code "<init>"}.
* The declaring class may be supplied as null if this is to be a bare name and type.
* The modifier flags default to zero.
* The resulting name will in an unresolved state.
*/
public MemberName(Class<?> defClass, String name, MethodType type) {
this(defClass, name, type, 0);
}
/** Query whether this member name is resolved.
* A resolved member name is one for which the JVM has found
* a method, constructor, field, or type binding corresponding exactly to the name.
* (Document?)
*/
public boolean isResolved() {
return (vmindex != VM_INDEX_UNINITIALIZED);
}
/** Query whether this member name is resolved to a non-static, non-final method.
*/
public boolean hasReceiverTypeDispatch() {
return (isMethod() && getVMIndex() >= 0);
}
/** Produce a string form of this member name.
* For types, it is simply the type's own string (as reported by {@code toString}).
* For fields, it is {@code "DeclaringClass.name/type"}.
* For methods and constructors, it is {@code "DeclaringClass.name(ptype...)rtype"}.
* If the declaring class is null, the prefix {@code "DeclaringClass."} is omitted.
* If the member is unresolved, a prefix {@code "*."} is prepended.
*/
@Override
public String toString() {
if (isType())
return type.toString(); // class java.lang.String
// else it is a field, method, or constructor
StringBuilder buf = new StringBuilder();
if (getDeclaringClass() != null) {
buf.append(getName(clazz));
buf.append('.');
}
String name = getName();
buf.append(name == null ? "*" : name);
Object type = getType();
if (!isInvocable()) {
buf.append('/');
buf.append(type == null ? "*" : getName(type));
} else {
buf.append(type == null ? "(*)*" : getName(type));
}
/*
buf.append('/');
// key: Public, private, pRotected, sTatic, Final, sYnchronized,
// transient/Varargs, native, (interface), abstract, sTrict, sYnthetic,
// (annotation), Enum, (unused)
final String FIELD_MOD_CHARS = "PprTF?vt????Y?E?";
final String METHOD_MOD_CHARS = "PprTFybVn?atY???";
String modChars = (isInvocable() ? METHOD_MOD_CHARS : FIELD_MOD_CHARS);
for (int i = 0; i < modChars.length(); i++) {
if ((flags & (1 << i)) != 0) {
char mc = modChars.charAt(i);
if (mc != '?')
buf.append(mc);
}
}
*/
return buf.toString();
}
private static String getName(Object obj) {
if (obj instanceof Class<?>)
return ((Class<?>)obj).getName();
return String.valueOf(obj);
}
// Queries to the JVM:
/** Document? */
/*non-public*/ int getVMIndex() {
if (!isResolved())
throw newIllegalStateException("not resolved", this);
return vmindex;
}
// /*non-public*/ Object getVMTarget() {
// if (!isResolved())
// throw newIllegalStateException("not resolved", this);
// return vmtarget;
// }
public IllegalAccessException makeAccessException(String message, Object from) {
message = message + ": "+ toString();
if (from != null) message += ", from " + from;
return new IllegalAccessException(message);
}
private String message() {
if (isResolved())
return "no access";
else if (isConstructor())
return "no such constructor";
else if (isMethod())
return "no such method";
else
return "no such field";
}
public ReflectiveOperationException makeAccessException() {
String message = message() + ": "+ toString();
if (isResolved())
return new IllegalAccessException(message);
else if (isConstructor())
return new NoSuchMethodException(message);
else if (isMethod())
return new NoSuchMethodException(message);
else
return new NoSuchFieldException(message);
}
/** Actually making a query requires an access check. */
/*non-public*/ static Factory getFactory() {
return Factory.INSTANCE;
}
/** A factory type for resolving member names with the help of the VM.
* TBD: Define access-safe public constructors for this factory.
*/
/*non-public*/ static class Factory {
private Factory() { } // singleton pattern
static Factory INSTANCE = new Factory();
private static int ALLOWED_FLAGS = SEARCH_ALL_SUPERS | ALL_KINDS;
/// Queries
List<MemberName> getMembers(Class<?> defc,
String matchName, Object matchType,
int matchFlags, Class<?> lookupClass) {
matchFlags &= ALLOWED_FLAGS;
String matchSig = null;
if (matchType != null) {
matchSig = BytecodeDescriptor.unparse(matchType);
if (matchSig.startsWith("("))
matchFlags &= ~(ALL_KINDS & ~IS_INVOCABLE);
else
matchFlags &= ~(ALL_KINDS & ~IS_FIELD);
}
final int BUF_MAX = 0x2000;
int len1 = matchName == null ? 10 : matchType == null ? 4 : 1;
MemberName[] buf = newMemberBuffer(len1);
int totalCount = 0;
ArrayList<MemberName[]> bufs = null;
int bufCount = 0;
for (;;) {
bufCount = MethodHandleNatives.getMembers(defc,
matchName, matchSig, matchFlags,
lookupClass,
totalCount, buf);
if (bufCount <= buf.length) {
if (bufCount < 0) bufCount = 0;
totalCount += bufCount;
break;
}
// JVM returned to us with an intentional overflow!
totalCount += buf.length;
int excess = bufCount - buf.length;
if (bufs == null) bufs = new ArrayList<MemberName[]>(1);
bufs.add(buf);
int len2 = buf.length;
len2 = Math.max(len2, excess);
len2 = Math.max(len2, totalCount / 4);
buf = newMemberBuffer(Math.min(BUF_MAX, len2));
}
ArrayList<MemberName> result = new ArrayList<MemberName>(totalCount);
if (bufs != null) {
for (MemberName[] buf0 : bufs) {
Collections.addAll(result, buf0);
}
}
result.addAll(Arrays.asList(buf).subList(0, bufCount));
// Signature matching is not the same as type matching, since
// one signature might correspond to several types.
// So if matchType is a Class or MethodType, refilter the results.
if (matchType != null && matchType != matchSig) {
for (Iterator<MemberName> it = result.iterator(); it.hasNext();) {
MemberName m = it.next();
if (!matchType.equals(m.getType()))
it.remove();
}
}
return result;
}
boolean resolveInPlace(MemberName m, boolean searchSupers, Class<?> lookupClass) {
if (m.name == null || m.type == null) { // find unique non-overloaded name
Class<?> defc = m.getDeclaringClass();
List<MemberName> choices = null;
if (m.isMethod())
choices = getMethods(defc, searchSupers, m.name, (MethodType) m.type, lookupClass);
else if (m.isConstructor())
choices = getConstructors(defc, lookupClass);
else if (m.isField())
choices = getFields(defc, searchSupers, m.name, (Class<?>) m.type, lookupClass);
//System.out.println("resolving "+m+" to "+choices);
if (choices == null || choices.size() != 1)
return false;
if (m.name == null) m.name = choices.get(0).name;
if (m.type == null) m.type = choices.get(0).type;
}
MethodHandleNatives.resolve(m, lookupClass);
if (m.isResolved()) return true;
int matchFlags = m.flags | (searchSupers ? SEARCH_ALL_SUPERS : 0);
String matchSig = m.getSignature();
MemberName[] buf = { m };
int n = MethodHandleNatives.getMembers(m.getDeclaringClass(),
m.getName(), matchSig, matchFlags, lookupClass, 0, buf);
if (n != 1) return false;
return m.isResolved();
}
/** Produce a resolved version of the given member.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Access checking is performed on behalf of the given {@code lookupClass}.
* If lookup fails or access is not permitted, null is returned.
* Otherwise a fresh copy of the given member is returned, with modifier bits filled in.
*/
public MemberName resolveOrNull(MemberName m, boolean searchSupers, Class<?> lookupClass) {
MemberName result = m.clone();
if (resolveInPlace(result, searchSupers, lookupClass))
return result;
return null;
}
/** Produce a resolved version of the given member.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Access checking is performed on behalf of the given {@code lookupClass}.
* If lookup fails or access is not permitted, a {@linkplain ReflectiveOperationException} is thrown.
* Otherwise a fresh copy of the given member is returned, with modifier bits filled in.
*/
public
<NoSuchMemberException extends ReflectiveOperationException>
MemberName resolveOrFail(MemberName m, boolean searchSupers, Class<?> lookupClass,
Class<NoSuchMemberException> nsmClass)
throws IllegalAccessException, NoSuchMemberException {
MemberName result = resolveOrNull(m, searchSupers, lookupClass);
if (result != null)
return result;
ReflectiveOperationException ex = m.makeAccessException();
if (ex instanceof IllegalAccessException) throw (IllegalAccessException) ex;
throw nsmClass.cast(ex);
}
/** Return a list of all methods defined by the given class.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getMethods(Class<?> defc, boolean searchSupers,
Class<?> lookupClass) {
return getMethods(defc, searchSupers, null, null, lookupClass);
}
/** Return a list of matching methods defined by the given class.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Returned methods will match the name (if not null) and the type (if not null).
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getMethods(Class<?> defc, boolean searchSupers,
String name, MethodType type, Class<?> lookupClass) {
int matchFlags = IS_METHOD | (searchSupers ? SEARCH_ALL_SUPERS : 0);
return getMembers(defc, name, type, matchFlags, lookupClass);
}
/** Return a list of all constructors defined by the given class.
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getConstructors(Class<?> defc, Class<?> lookupClass) {
return getMembers(defc, null, null, IS_CONSTRUCTOR, lookupClass);
}
/** Return a list of all fields defined by the given class.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getFields(Class<?> defc, boolean searchSupers,
Class<?> lookupClass) {
return getFields(defc, searchSupers, null, null, lookupClass);
}
/** Return a list of all fields defined by the given class.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Returned fields will match the name (if not null) and the type (if not null).
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getFields(Class<?> defc, boolean searchSupers,
String name, Class<?> type, Class<?> lookupClass) {
int matchFlags = IS_FIELD | (searchSupers ? SEARCH_ALL_SUPERS : 0);
return getMembers(defc, name, type, matchFlags, lookupClass);
}
/** Return a list of all nested types defined by the given class.
* Super types are searched (for inherited members) if {@code searchSupers} is true.
* Access checking is performed on behalf of the given {@code lookupClass}.
* Inaccessible members are not added to the last.
*/
public List<MemberName> getNestedTypes(Class<?> defc, boolean searchSupers,
Class<?> lookupClass) {
int matchFlags = IS_TYPE | (searchSupers ? SEARCH_ALL_SUPERS : 0);
return getMembers(defc, null, null, matchFlags, lookupClass);
}
private static MemberName[] newMemberBuffer(int length) {
MemberName[] buf = new MemberName[length];
// fill the buffer with dummy structs for the JVM to fill in
for (int i = 0; i < length; i++)
buf[i] = new MemberName();
return buf;
}
}
// static {
// System.out.println("Hello world! My methods are:");
// System.out.println(Factory.INSTANCE.getMethods(MemberName.class, true, null));
// }
}