org.jruby.RubyClass Maven / Gradle / Ivy
/***** BEGIN LICENSE BLOCK *****
* Version: EPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Eclipse Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/epl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2001-2004 Jan Arne Petersen
* Copyright (C) 2002-2004 Anders Bengtsson
* Copyright (C) 2004-2005 Thomas E Enebo
* Copyright (C) 2004 Stefan Matthias Aust
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the EPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the EPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby;
import org.jruby.runtime.Arity;
import org.jruby.runtime.ivars.VariableAccessor;
import static org.jruby.util.CodegenUtils.ci;
import static org.jruby.util.CodegenUtils.p;
import static org.jruby.util.CodegenUtils.sig;
import static org.objectweb.asm.Opcodes.ACC_PRIVATE;
import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static org.objectweb.asm.Opcodes.ACC_STATIC;
import static org.objectweb.asm.Opcodes.ACC_SUPER;
import static org.objectweb.asm.Opcodes.ACC_VARARGS;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.compiler.impl.SkinnyMethodAdapter;
import org.jruby.exceptions.RaiseException;
import org.jruby.internal.runtime.methods.DynamicMethod;
import org.jruby.java.codegen.RealClassGenerator;
import org.jruby.java.codegen.Reified;
import org.jruby.javasupport.Java;
import org.jruby.runtime.Helpers;
import org.jruby.runtime.Block;
import org.jruby.runtime.CallSite;
import org.jruby.runtime.CallType;
import org.jruby.runtime.ClassIndex;
import org.jruby.runtime.MethodIndex;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.ObjectMarshal;
import org.jruby.runtime.ThreadContext;
import static org.jruby.runtime.Visibility.*;
import static org.jruby.CompatVersion.*;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.callsite.CacheEntry;
import org.jruby.runtime.ivars.VariableAccessorField;
import org.jruby.runtime.ivars.VariableTableManager;
import org.jruby.runtime.marshal.MarshalStream;
import org.jruby.runtime.marshal.UnmarshalStream;
import org.jruby.runtime.opto.Invalidator;
import org.jruby.util.ClassCache.OneShotClassLoader;
import org.jruby.util.ClassDefiningClassLoader;
import org.jruby.util.CodegenUtils;
import org.jruby.util.JavaNameMangler;
import org.jruby.util.collections.WeakHashSet;
import org.jruby.util.log.Logger;
import org.jruby.util.log.LoggerFactory;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.FieldVisitor;
/**
*
* @author jpetersen
*/
@JRubyClass(name="Class", parent="Module")
public class RubyClass extends RubyModule {
private static final Logger LOG = LoggerFactory.getLogger("RubyClass");
public static void createClassClass(Ruby runtime, RubyClass classClass) {
classClass.index = ClassIndex.CLASS;
classClass.setReifiedClass(RubyClass.class);
classClass.kindOf = new RubyModule.JavaClassKindOf(RubyClass.class);
classClass.undefineMethod("module_function");
classClass.undefineMethod("append_features");
classClass.undefineMethod("extend_object");
classClass.defineAnnotatedMethods(RubyClass.class);
}
public static final ObjectAllocator CLASS_ALLOCATOR = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klass) {
RubyClass clazz = new RubyClass(runtime);
clazz.allocator = ObjectAllocator.NOT_ALLOCATABLE_ALLOCATOR; // Class.allocate object is not allocatable before it is initialized
return clazz;
}
};
public ObjectAllocator getAllocator() {
return allocator;
}
public void setAllocator(ObjectAllocator allocator) {
this.allocator = allocator;
}
/**
* Set a reflective allocator that calls a no-arg constructor on the given
* class.
*
* @param cls The class on which to call the default constructor to allocate
*/
public void setClassAllocator(final Class cls) {
this.allocator = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
try {
RubyBasicObject object = (RubyBasicObject)cls.newInstance();
object.setMetaClass(klazz);
return object;
} catch (InstantiationException ie) {
throw runtime.newTypeError("could not allocate " + cls + " with default constructor:\n" + ie);
} catch (IllegalAccessException iae) {
throw runtime.newSecurityError("could not allocate " + cls + " due to inaccessible default constructor:\n" + iae);
}
}
};
this.reifiedClass = cls;
}
/**
* Set a reflective allocator that calls the "standard" Ruby object
* constructor (Ruby, RubyClass) on the given class.
*
* @param cls The class from which to grab a standard Ruby constructor
*/
public void setRubyClassAllocator(final Class cls) {
try {
final Constructor constructor = cls.getConstructor(Ruby.class, RubyClass.class);
this.allocator = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
try {
return (IRubyObject)constructor.newInstance(runtime, klazz);
} catch (InvocationTargetException ite) {
throw runtime.newTypeError("could not allocate " + cls + " with (Ruby, RubyClass) constructor:\n" + ite);
} catch (InstantiationException ie) {
throw runtime.newTypeError("could not allocate " + cls + " with (Ruby, RubyClass) constructor:\n" + ie);
} catch (IllegalAccessException iae) {
throw runtime.newSecurityError("could not allocate " + cls + " due to inaccessible (Ruby, RubyClass) constructor:\n" + iae);
}
}
};
this.reifiedClass = cls;
} catch (NoSuchMethodException nsme) {
throw new RuntimeException(nsme);
}
}
/**
* Set a reflective allocator that calls the "standard" Ruby object
* constructor (Ruby, RubyClass) on the given class via a static
* __allocate__ method intermediate.
*
* @param cls The class from which to grab a standard Ruby __allocate__
* method.
*/
public void setRubyStaticAllocator(final Class cls) {
try {
final Method method = cls.getDeclaredMethod("__allocate__", Ruby.class, RubyClass.class);
this.allocator = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
try {
return (IRubyObject)method.invoke(null, runtime, klazz);
} catch (InvocationTargetException ite) {
throw runtime.newTypeError("could not allocate " + cls + " with (Ruby, RubyClass) constructor:\n" + ite);
} catch (IllegalAccessException iae) {
throw runtime.newSecurityError("could not allocate " + cls + " due to inaccessible (Ruby, RubyClass) constructor:\n" + iae);
}
}
};
this.reifiedClass = cls;
} catch (NoSuchMethodException nsme) {
throw new RuntimeException(nsme);
}
}
@JRubyMethod(name = "allocate")
public IRubyObject allocate() {
if (superClass == null) {
if(!(runtime.is1_9() && this == runtime.getBasicObject())) {
throw runtime.newTypeError("can't instantiate uninitialized class");
}
}
IRubyObject obj = allocator.allocate(runtime, this);
if (obj.getMetaClass().getRealClass() != getRealClass()) {
throw runtime.newTypeError("wrong instance allocation");
}
return obj;
}
public CallSite getBaseCallSite(int idx) {
return baseCallSites[idx];
}
public CallSite[] getBaseCallSites() {
return baseCallSites;
}
public CallSite[] getExtraCallSites() {
return extraCallSites;
}
public VariableTableManager getVariableTableManager() {
return variableTableManager;
}
public boolean hasObjectID() {
return variableTableManager.hasObjectID();
}
public Map getVariableAccessorsForRead() {
return variableTableManager.getVariableAccessorsForRead();
}
public VariableAccessor getVariableAccessorForWrite(String name) {
return variableTableManager.getVariableAccessorForWrite(name);
}
public VariableAccessor getVariableAccessorForRead(String name) {
VariableAccessor accessor = getVariableAccessorsForRead().get(name);
if (accessor == null) accessor = VariableAccessor.DUMMY_ACCESSOR;
return accessor;
}
public VariableAccessorField getObjectIdAccessorField() {
return variableTableManager.getObjectIdAccessorField();
}
public VariableAccessorField getNativeHandleAccessorField() {
return variableTableManager.getNativeHandleAccessorField();
}
public VariableAccessor getNativeHandleAccessorForWrite() {
return variableTableManager.getNativeHandleAccessorForWrite();
}
public VariableAccessorField getFFIHandleAccessorField() {
return variableTableManager.getFFIHandleAccessorField();
}
public VariableAccessor getFFIHandleAccessorForRead() {
return variableTableManager.getFFIHandleAccessorForRead();
}
public VariableAccessor getFFIHandleAccessorForWrite() {
return variableTableManager.getFFIHandleAccessorForWrite();
}
public VariableAccessorField getObjectGroupAccessorField() {
return variableTableManager.getObjectGroupAccessorField();
}
public VariableAccessor getObjectGroupAccessorForRead() {
return variableTableManager.getObjectGroupAccessorForRead();
}
public VariableAccessor getObjectGroupAccessorForWrite() {
return variableTableManager.getObjectGroupAccessorForWrite();
}
public int getVariableTableSize() {
return variableTableManager.getVariableTableSize();
}
public int getVariableTableSizeWithExtras() {
return variableTableManager.getVariableTableSizeWithExtras();
}
/**
* Get an array of all the known instance variable names. The offset into
* the array indicates the offset of the variable's value in the per-object
* variable array.
*
* @return a copy of the array of known instance variable names
*/
public String[] getVariableNames() {
return variableTableManager.getVariableNames();
}
public Map getVariableTableCopy() {
return new HashMap(getVariableAccessorsForRead());
}
@Override
public int getNativeTypeIndex() {
return ClassIndex.CLASS;
}
@Override
public boolean isModule() {
return false;
}
@Override
public boolean isClass() {
return true;
}
@Override
public boolean isSingleton() {
return false;
}
/** boot_defclass
* Create an initial Object meta class before Module and Kernel dependencies have
* squirreled themselves together.
*
* @param runtime we need it
* @return a half-baked meta class for object
*/
public static RubyClass createBootstrapClass(Ruby runtime, String name, RubyClass superClass, ObjectAllocator allocator) {
RubyClass obj;
if (superClass == null ) { // boot the Object class
obj = new RubyClass(runtime);
obj.marshal = DEFAULT_OBJECT_MARSHAL;
} else { // boot the Module and Class classes
obj = new RubyClass(runtime, superClass);
}
obj.setAllocator(allocator);
obj.setBaseName(name);
return obj;
}
/** separate path for MetaClass and IncludedModuleWrapper construction
* (rb_class_boot version for MetaClasses)
* no marshal, allocator initialization and addSubclass(this) here!
*/
protected RubyClass(Ruby runtime, RubyClass superClass, boolean objectSpace) {
super(runtime, runtime.getClassClass(), objectSpace);
this.runtime = runtime;
// Since this path is for included wrappers and singletons, use parent
// class's realClass and varTableMgr. If the latter is null, create a
// dummy, since we won't be using it anyway (we're above BasicObject
// so variable requests won't reach us).
if (superClass == null) {
this.realClass = null;
this.variableTableManager = new VariableTableManager(this);
} else {
this.realClass = superClass.realClass;
if (realClass != null) {
this.variableTableManager = realClass.variableTableManager;
} else {
this.variableTableManager = new VariableTableManager(this);
}
}
setSuperClass(superClass); // this is the only case it might be null here (in MetaClass construction)
}
/** used by CLASS_ALLOCATOR (any Class' class will be a Class!)
* also used to bootstrap Object class
*/
protected RubyClass(Ruby runtime) {
super(runtime, runtime.getClassClass());
this.runtime = runtime;
this.realClass = this;
this.variableTableManager = new VariableTableManager(this);
index = ClassIndex.CLASS;
}
/** rb_class_boot (for plain Classes)
* also used to bootstrap Module and Class classes
*/
protected RubyClass(Ruby runtime, RubyClass superClazz) {
this(runtime);
setSuperClass(superClazz);
marshal = superClazz.marshal; // use parent's marshal
superClazz.addSubclass(this);
allocator = superClazz.allocator;
infectBy(superClass);
}
/**
* A constructor which allows passing in an array of supplementary call sites.
*/
protected RubyClass(Ruby runtime, RubyClass superClazz, CallSite[] extraCallSites) {
this(runtime);
setSuperClass(superClazz);
this.marshal = superClazz.marshal; // use parent's marshal
superClazz.addSubclass(this);
this.extraCallSites = extraCallSites;
infectBy(superClass);
}
/**
* Construct a new class with the given name scoped under Object (global)
* and with Object as its immediate superclass.
* Corresponds to rb_class_new in MRI.
*/
public static RubyClass newClass(Ruby runtime, RubyClass superClass) {
if (superClass == runtime.getClassClass()) throw runtime.newTypeError("can't make subclass of Class");
if (superClass.isSingleton()) throw runtime.newTypeError("can't make subclass of virtual class");
return new RubyClass(runtime, superClass);
}
/**
* A variation on newClass that allow passing in an array of supplementary
* call sites to improve dynamic invocation.
*/
public static RubyClass newClass(Ruby runtime, RubyClass superClass, CallSite[] extraCallSites) {
if (superClass == runtime.getClassClass()) throw runtime.newTypeError("can't make subclass of Class");
if (superClass.isSingleton()) throw runtime.newTypeError("can't make subclass of virtual class");
return new RubyClass(runtime, superClass, extraCallSites);
}
/**
* Construct a new class with the given name, allocator, parent class,
* and containing class. If setParent is true, the class's parent will be
* explicitly set to the provided parent (rather than the new class just
* being assigned to a constant in that parent).
* Corresponds to rb_class_new/rb_define_class_id/rb_name_class/rb_set_class_path
* in MRI.
*/
public static RubyClass newClass(Ruby runtime, RubyClass superClass, String name, ObjectAllocator allocator, RubyModule parent, boolean setParent) {
RubyClass clazz = newClass(runtime, superClass);
clazz.setBaseName(name);
clazz.setAllocator(allocator);
clazz.makeMetaClass(superClass.getMetaClass());
if (setParent) clazz.setParent(parent);
parent.setConstant(name, clazz);
clazz.inherit(superClass);
return clazz;
}
/**
* A variation on newClass that allows passing in an array of supplementary
* call sites to improve dynamic invocation performance.
*/
public static RubyClass newClass(Ruby runtime, RubyClass superClass, String name, ObjectAllocator allocator, RubyModule parent, boolean setParent, CallSite[] extraCallSites) {
RubyClass clazz = newClass(runtime, superClass, extraCallSites);
clazz.setBaseName(name);
clazz.setAllocator(allocator);
clazz.makeMetaClass(superClass.getMetaClass());
if (setParent) clazz.setParent(parent);
parent.setConstant(name, clazz);
clazz.inherit(superClass);
return clazz;
}
/** rb_make_metaclass
*
*/
@Override
public RubyClass makeMetaClass(RubyClass superClass) {
if (isSingleton()) { // could be pulled down to RubyClass in future
MetaClass klass = new MetaClass(runtime, superClass, this); // rb_class_boot
setMetaClass(klass);
klass.setMetaClass(klass);
klass.setSuperClass(getSuperClass().getRealClass().getMetaClass());
return klass;
} else {
return super.makeMetaClass(superClass);
}
}
@Deprecated
public IRubyObject invoke(ThreadContext context, IRubyObject self, int methodIndex, String name, IRubyObject[] args, CallType callType, Block block) {
return invoke(context, self, name, args, callType, block);
}
public boolean notVisibleAndNotMethodMissing(DynamicMethod method, String name, IRubyObject caller, CallType callType) {
return !method.isCallableFrom(caller, callType) && !name.equals("method_missing");
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
CallType callType, Block block) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, block);
}
return method.call(context, self, this, name, block);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name, Block block) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, block);
}
return method.call(context, self, this, name, block);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject[] args, CallType callType, Block block) {
assert args != null;
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, args, block);
}
return method.call(context, self, this, name, args, block);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject[] args, Block block) {
assert args != null;
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, args, block);
}
return method.call(context, self, this, name, args, block);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg, CallType callType, Block block) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg, block);
}
return method.call(context, self, this, name, arg, block);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg, Block block) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg, block);
}
return method.call(context, self, this, name, arg, block);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, CallType callType, Block block) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg0, arg1, block);
}
return method.call(context, self, this, name, arg0, arg1, block);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, Block block) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg0, arg1, block);
}
return method.call(context, self, this, name, arg0, arg1, block);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, CallType callType, Block block) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg0, arg1, arg2, block);
}
return method.call(context, self, this, name, arg0, arg1, arg2, block);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, Block block) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg0, arg1, arg2, block);
}
return method.call(context, self, this, name, arg0, arg1, arg2, block);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
CallType callType) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, Block.NULL_BLOCK);
}
return method.call(context, self, this, name);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, Block.NULL_BLOCK);
}
return method.call(context, self, this, name);
}
public IRubyObject finvokeChecked(ThreadContext context, IRubyObject self, String name) {
RubyClass klass = self.getMetaClass();
DynamicMethod me;
if (!checkFuncallRespondTo(context, self.getMetaClass(), self, name))
return null;
me = searchMethod(name);
if (!checkFuncallCallable(context, me, CallType.FUNCTIONAL, self)) {
return checkFuncallMissing(context, klass, self, name);
}
return me.call(context, self, klass, name);
}
// MRI: check_funcall_exec
private static IRubyObject checkFuncallExec(ThreadContext context, IRubyObject self, String name, IRubyObject... args) {
IRubyObject[] newArgs = new IRubyObject[args.length + 1];
System.arraycopy(args, 0, newArgs, 1, args.length);
newArgs[0] = context.runtime.newSymbol(name);
return self.callMethod(context, "method_missing", newArgs);
}
// MRI: check_funcall_failed
private static IRubyObject checkFuncallFailed(ThreadContext context, IRubyObject self, String name, RubyClass expClass, IRubyObject... args) {
if (self.respondsTo(name)) {
throw context.runtime.newRaiseException(expClass, name);
}
return null;
}
// MRI: check_funcall_respond_to
private static boolean checkFuncallRespondTo(ThreadContext context, RubyClass klass, IRubyObject recv, String mid) {
Ruby runtime = context.runtime;
RubyClass defined_class;
DynamicMethod me = klass.searchMethod("respond_to?");
// NOTE: isBuiltin here would be NOEX_BASIC in MRI, a flag only added to respond_to?, method_missing, and
// respond_to_missing? Same effect, I believe.
if (me != null && !me.isUndefined() && !me.isBuiltin()) {
Arity arity = me.getArity();
if (arity.getValue() > 2)
throw runtime.newArgumentError("respond_to? must accept 1 or 2 arguments (requires " + arity + ")");
IRubyObject result = me.call(context, recv, klass, "respond_to?", runtime.newString(mid), runtime.getTrue());
if (!result.isTrue()) {
return false;
}
}
return true;
}
// MRI: check_funcall_callable
public static boolean checkFuncallCallable(ThreadContext context, DynamicMethod method, CallType callType, IRubyObject self) {
return rbMethodCallStatus(context, method, callType, self);
}
// MRI: rb_method_call_status
// FIXME: Partial impl because we don't have these "NOEX" flags
public static boolean rbMethodCallStatus(ThreadContext context, DynamicMethod method, CallType callType, IRubyObject self) {
return method != null && !method.isUndefined() && method.isCallableFrom(self, callType);
}
private static IRubyObject checkFuncallMissing(ThreadContext context, RubyClass klass, IRubyObject self, String method, IRubyObject... args) {
Ruby runtime = context.runtime;
if (klass.isMethodBuiltin("method_missing")) {
return null;
}
else {
final IRubyObject $ex = context.getErrorInfo();
try {
return checkFuncallExec(context, self, method, args);
}
catch (RaiseException e) {
context.setErrorInfo($ex); // restore $!
return checkFuncallFailed(context, self, method, runtime.getNoMethodError(), args);
}
}
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject[] args, CallType callType) {
assert args != null;
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, args, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, args);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject[] args) {
assert args != null;
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, args, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, args);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg, CallType callType) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, CallType callType) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg0, arg1, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg0, arg1);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg0, arg1, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg0, arg1);
}
public IRubyObject invoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, CallType callType) {
DynamicMethod method = searchMethod(name);
IRubyObject caller = context.getFrameSelf();
if (shouldCallMethodMissing(method, name, caller, callType)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, callType, arg0, arg1, arg2, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg0, arg1, arg2);
}
public IRubyObject finvoke(ThreadContext context, IRubyObject self, String name,
IRubyObject arg0, IRubyObject arg1, IRubyObject arg2) {
DynamicMethod method = searchMethod(name);
if (shouldCallMethodMissing(method)) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), name, CallType.FUNCTIONAL, arg0, arg1, arg2, Block.NULL_BLOCK);
}
return method.call(context, self, this, name, arg0, arg1, arg2);
}
private void dumpReifiedClass(String dumpDir, String javaPath, byte[] classBytes) {
if (dumpDir != null) {
if (dumpDir.equals("")) {
dumpDir = ".";
}
java.io.FileOutputStream classStream = null;
try {
java.io.File classFile = new java.io.File(dumpDir, javaPath + ".class");
classFile.getParentFile().mkdirs();
classStream = new java.io.FileOutputStream(classFile);
classStream.write(classBytes);
} catch (IOException io) {
getRuntime().getWarnings().warn("unable to dump class file: " + io.getMessage());
} finally {
if (classStream != null) {
try {
classStream.close();
} catch (IOException ignored) {
}
}
}
}
}
private void generateMethodAnnotations(Map> methodAnnos, SkinnyMethodAdapter m, List>> parameterAnnos) {
if (methodAnnos != null && methodAnnos.size() != 0) {
for (Map.Entry> entry : methodAnnos.entrySet()) {
m.visitAnnotationWithFields(ci(entry.getKey()), true, entry.getValue());
}
}
if (parameterAnnos != null && parameterAnnos.size() != 0) {
for (int i = 0; i < parameterAnnos.size(); i++) {
Map> annos = parameterAnnos.get(i);
if (annos != null && annos.size() != 0) {
for (Iterator>> it = annos.entrySet().iterator(); it.hasNext();) {
Map.Entry> entry = it.next();
m.visitParameterAnnotationWithFields(i, ci(entry.getKey()), true, entry.getValue());
}
}
}
}
}
private boolean shouldCallMethodMissing(DynamicMethod method) {
return method.isUndefined();
}
private boolean shouldCallMethodMissing(DynamicMethod method, String name, IRubyObject caller, CallType callType) {
return method.isUndefined() || notVisibleAndNotMethodMissing(method, name, caller, callType);
}
public IRubyObject invokeInherited(ThreadContext context, IRubyObject self, IRubyObject subclass) {
DynamicMethod method = getMetaClass().searchMethod("inherited");
if (method.isUndefined()) {
return Helpers.callMethodMissing(context, self, method.getVisibility(), "inherited", CallType.FUNCTIONAL, Block.NULL_BLOCK);
}
return method.call(context, self, getMetaClass(), "inherited", subclass, Block.NULL_BLOCK);
}
/** rb_class_new_instance
*
*/
@JRubyMethod(name = "new", omit = true)
public IRubyObject newInstance(ThreadContext context, Block block) {
IRubyObject obj = allocate();
baseCallSites[CS_IDX_INITIALIZE].call(context, obj, obj, block);
return obj;
}
@JRubyMethod(name = "new", omit = true)
public IRubyObject newInstance(ThreadContext context, IRubyObject arg0, Block block) {
IRubyObject obj = allocate();
baseCallSites[CS_IDX_INITIALIZE].call(context, obj, obj, arg0, block);
return obj;
}
@JRubyMethod(name = "new", omit = true)
public IRubyObject newInstance(ThreadContext context, IRubyObject arg0, IRubyObject arg1, Block block) {
IRubyObject obj = allocate();
baseCallSites[CS_IDX_INITIALIZE].call(context, obj, obj, arg0, arg1, block);
return obj;
}
@JRubyMethod(name = "new", omit = true)
public IRubyObject newInstance(ThreadContext context, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, Block block) {
IRubyObject obj = allocate();
baseCallSites[CS_IDX_INITIALIZE].call(context, obj, obj, arg0, arg1, arg2, block);
return obj;
}
@JRubyMethod(name = "new", rest = true, omit = true)
public IRubyObject newInstance(ThreadContext context, IRubyObject[] args, Block block) {
IRubyObject obj = allocate();
baseCallSites[CS_IDX_INITIALIZE].call(context, obj, obj, args, block);
return obj;
}
/** rb_class_initialize
*
*/
@JRubyMethod(compat = RUBY1_8, visibility = PRIVATE)
@Override
public IRubyObject initialize(ThreadContext context, Block block) {
checkNotInitialized();
return initializeCommon(context, runtime.getObject(), block, false);
}
@JRubyMethod(compat = RUBY1_8, visibility = PRIVATE)
public IRubyObject initialize(ThreadContext context, IRubyObject superObject, Block block) {
checkNotInitialized();
checkInheritable(superObject);
return initializeCommon(context, (RubyClass)superObject, block, false);
}
@JRubyMethod(name = "initialize", compat = RUBY1_9, visibility = PRIVATE)
public IRubyObject initialize19(ThreadContext context, Block block) {
checkNotInitialized();
return initializeCommon(context, runtime.getObject(), block, true);
}
@JRubyMethod(name = "initialize", compat = RUBY1_9, visibility = PRIVATE)
public IRubyObject initialize19(ThreadContext context, IRubyObject superObject, Block block) {
checkNotInitialized();
checkInheritable(superObject);
return initializeCommon(context, (RubyClass)superObject, block, true);
}
private IRubyObject initializeCommon(ThreadContext context, RubyClass superClazz, Block block, boolean ruby1_9 /*callInheritBeforeSuper*/) {
setSuperClass(superClazz);
allocator = superClazz.allocator;
makeMetaClass(superClazz.getMetaClass());
marshal = superClazz.marshal;
superClazz.addSubclass(this);
if (ruby1_9) {
inherit(superClazz);
super.initialize(context, block);
} else {
super.initialize(context, block);
inherit(superClazz);
}
return this;
}
/** rb_class_init_copy
*
*/
@JRubyMethod(name = "initialize_copy", required = 1, visibility = PRIVATE)
@Override
public IRubyObject initialize_copy(IRubyObject original){
checkNotInitialized();
if (original instanceof MetaClass) throw runtime.newTypeError("can't copy singleton class");
super.initialize_copy(original);
allocator = ((RubyClass)original).allocator;
return this;
}
protected void setModuleSuperClass(RubyClass superClass) {
// remove us from old superclass's child classes
if (this.superClass != null) this.superClass.removeSubclass(this);
// add us to new superclass's child classes
superClass.addSubclass(this);
// update superclass reference
setSuperClass(superClass);
}
public Collection subclasses(boolean includeDescendants) {
Set mySubclasses = subclasses;
if (mySubclasses != null) {
Collection mine = new ArrayList(mySubclasses);
if (includeDescendants) {
for (RubyClass i: mySubclasses) {
mine.addAll(i.subclasses(includeDescendants));
}
}
return mine;
} else {
return Collections.EMPTY_LIST;
}
}
/**
* Add a new subclass to the weak set of subclasses.
*
* This version always constructs a new set to avoid having to synchronize
* against the set when iterating it for invalidation in
* invalidateCacheDescendants.
*
* @param subclass The subclass to add
*/
public synchronized void addSubclass(RubyClass subclass) {
synchronized (runtime.getHierarchyLock()) {
Set oldSubclasses = subclasses;
if (oldSubclasses == null) subclasses = oldSubclasses = new WeakHashSet(4);
oldSubclasses.add(subclass);
}
}
/**
* Remove a subclass from the weak set of subclasses.
*
* @param subclass The subclass to remove
*/
public synchronized void removeSubclass(RubyClass subclass) {
synchronized (runtime.getHierarchyLock()) {
Set oldSubclasses = subclasses;
if (oldSubclasses == null) return;
oldSubclasses.remove(subclass);
}
}
/**
* Replace an existing subclass with a new one.
*
* @param subclass The subclass to remove
* @param newSubclass The subclass to replace it with
*/
public synchronized void replaceSubclass(RubyClass subclass, RubyClass newSubclass) {
synchronized (runtime.getHierarchyLock()) {
Set oldSubclasses = subclasses;
if (oldSubclasses == null) return;
oldSubclasses.remove(subclass);
oldSubclasses.add(newSubclass);
}
}
public void becomeSynchronized() {
// make this class and all subclasses sync
synchronized (getRuntime().getHierarchyLock()) {
super.becomeSynchronized();
Set mySubclasses = subclasses;
if (mySubclasses != null) for (RubyClass subclass : mySubclasses) {
subclass.becomeSynchronized();
}
}
}
/**
* Invalidate all subclasses of this class by walking the set of all
* subclasses and asking them to invalidate themselves.
*
* Note that this version works against a reference to the current set of
* subclasses, which could be replaced by the time this iteration is
* complete. In theory, there may be a path by which invalidation would
* miss a class added during the invalidation process, but the exposure is
* minimal if it exists at all. The only way to prevent it would be to
* synchronize both invalidation and subclass set modification against a
* global lock, which we would like to avoid.
*/
@Override
public void invalidateCacheDescendants() {
super.invalidateCacheDescendants();
synchronized (runtime.getHierarchyLock()) {
Set mySubclasses = subclasses;
if (mySubclasses != null) for (RubyClass subclass : mySubclasses) {
subclass.invalidateCacheDescendants();
}
}
}
public void addInvalidatorsAndFlush(List invalidators) {
// add this class's invalidators to the aggregate
invalidators.add(methodInvalidator);
// if we're not at boot time, don't bother fully clearing caches
if (!runtime.isBooting()) cachedMethods.clear();
// no subclasses, don't bother with lock and iteration
if (subclasses == null || subclasses.isEmpty()) return;
// cascade into subclasses
synchronized (runtime.getHierarchyLock()) {
Set mySubclasses = subclasses;
if (mySubclasses != null) for (RubyClass subclass : mySubclasses) {
subclass.addInvalidatorsAndFlush(invalidators);
}
}
}
public Ruby getClassRuntime() {
return runtime;
}
public final RubyClass getRealClass() {
return realClass;
}
@JRubyMethod(name = "inherited", required = 1, visibility = PRIVATE)
public IRubyObject inherited(ThreadContext context, IRubyObject arg) {
return runtime.getNil();
}
/** rb_class_inherited (reversed semantics!)
*
*/
public void inherit(RubyClass superClazz) {
if (superClazz == null) superClazz = runtime.getObject();
if (getRuntime().getNil() != null) {
superClazz.invokeInherited(runtime.getCurrentContext(), superClazz, this);
}
}
/** Return the real super class of this class.
*
* rb_class_superclass
*
*/
@JRubyMethod(name = "superclass")
public IRubyObject superclass(ThreadContext context) {
RubyClass superClazz = superClass;
if (superClazz == null) {
if (runtime.is1_9() && metaClass == runtime.getBasicObject().getMetaClass()) return runtime.getNil();
throw runtime.newTypeError("uninitialized class");
}
while (superClazz != null && superClazz.isIncluded()) superClazz = superClazz.superClass;
return superClazz != null ? superClazz : runtime.getNil();
}
private void checkNotInitialized() {
if (superClass != null || (runtime.is1_9() && this == runtime.getBasicObject())) {
throw runtime.newTypeError("already initialized class");
}
}
/** rb_check_inheritable
*
*/
public static void checkInheritable(IRubyObject superClass) {
if (!(superClass instanceof RubyClass)) {
throw superClass.getRuntime().newTypeError("superclass must be a Class (" + superClass.getMetaClass() + " given)");
}
if (((RubyClass)superClass).isSingleton()) {
throw superClass.getRuntime().newTypeError("can't make subclass of virtual class");
}
}
public final ObjectMarshal getMarshal() {
return marshal;
}
public final void setMarshal(ObjectMarshal marshal) {
this.marshal = marshal;
}
public final void marshal(Object obj, MarshalStream marshalStream) throws IOException {
getMarshal().marshalTo(runtime, obj, this, marshalStream);
}
public final Object unmarshal(UnmarshalStream unmarshalStream) throws IOException {
return getMarshal().unmarshalFrom(runtime, this, unmarshalStream);
}
public static void marshalTo(RubyClass clazz, MarshalStream output) throws java.io.IOException {
output.registerLinkTarget(clazz);
output.writeString(MarshalStream.getPathFromClass(clazz));
}
public static RubyClass unmarshalFrom(UnmarshalStream input) throws java.io.IOException {
String name = RubyString.byteListToString(input.unmarshalString());
RubyClass result = UnmarshalStream.getClassFromPath(input.getRuntime(), name);
input.registerLinkTarget(result);
return result;
}
protected static final ObjectMarshal DEFAULT_OBJECT_MARSHAL = new ObjectMarshal() {
public void marshalTo(Ruby runtime, Object obj, RubyClass type,
MarshalStream marshalStream) throws IOException {
IRubyObject object = (IRubyObject)obj;
marshalStream.registerLinkTarget(object);
marshalStream.dumpVariables(object.getVariableList());
}
public Object unmarshalFrom(Ruby runtime, RubyClass type,
UnmarshalStream unmarshalStream) throws IOException {
IRubyObject result = type.allocate();
unmarshalStream.registerLinkTarget(result);
unmarshalStream.defaultVariablesUnmarshal(result);
return result;
}
};
/**
* Whether this class can be reified into a Java class. Currently only objects
* that descend from Object (or descend from Ruby-based classes that descend
* from Object) can be reified.
*
* @return true if the class can be reified, false otherwise
*/
public boolean isReifiable() {
RubyClass realSuper = null;
// already reified is not reifiable
if (reifiedClass != null) return false;
// root classes are not reifiable
if (superClass == null || (realSuper = superClass.getRealClass()) == null) return false;
Class reifiedSuper = realSuper.reifiedClass;
// if super has been reified or is a native class
if (reifiedSuper != null) {
// super must be Object, BasicObject, or a reified user class
return reifiedSuper == RubyObject.class ||
reifiedSuper == RubyBasicObject.class ||
Reified.class.isAssignableFrom(reifiedSuper);
} else {
// non-native, non-reified super; recurse
return realSuper.isReifiable();
}
}
public void reifyWithAncestors() {
reifyWithAncestors(null, true);
}
public void reifyWithAncestors(String classDumpDir) {
reifyWithAncestors(classDumpDir, true);
}
public void reifyWithAncestors(boolean useChildLoader) {
reifyWithAncestors(null, useChildLoader);
}
/**
* Reify this class, first reifying all its ancestors. This causes the
* reified class and all ancestors' reified classes to come into existence,
* so any future changes will not be reflected.
*
* This form also accepts a string argument indicating a path in which to dump
* the intermediate reified class bytes.
*
* @param classDumpDir the path in which to dump reified class bytes
* @param useChildLoader whether to load the class into its own child classloader
*/
public void reifyWithAncestors(String classDumpDir, boolean useChildLoader) {
if (isReifiable()) {
RubyClass realSuper = getSuperClass().getRealClass();
if (realSuper.reifiedClass == null) realSuper.reifyWithAncestors(classDumpDir, useChildLoader);
reify(classDumpDir, useChildLoader);
}
}
private static final boolean DEBUG_REIFY = false;
public synchronized void reify() {
reify(null, true);
}
public synchronized void reify(String classDumpDir) {
reify(classDumpDir, true);
}
public synchronized void reify(boolean useChildLoader) {
reify(null, useChildLoader);
}
/**
* Stand up a real Java class for the backing store of this object
* @param classDumpDir Directory to save reified java class
*/
public synchronized void reify(String classDumpDir, boolean useChildLoader) {
// re-check reifiable in case another reify call has jumped in ahead of us
if (!isReifiable()) return;
Class reifiedParent = RubyObject.class;
// calculate an appropriate name, using "Anonymous####" if none is present
String name;
if (getBaseName() == null) {
name = "AnonymousRubyClass__" + id;
} else {
name = getName();
}
String javaName = "rubyobj." + name.replaceAll("::", ".");
String javaPath = "rubyobj/" + name.replaceAll("::", "/");
ClassDefiningClassLoader parentCL;
Class parentReified = superClass.getRealClass().getReifiedClass();
if (parentReified == null) {
throw getClassRuntime().newTypeError("class " + getName() + " parent class is not yet reified");
}
if (parentReified.getClassLoader() instanceof OneShotClassLoader) {
parentCL = (OneShotClassLoader)superClass.getRealClass().getReifiedClass().getClassLoader();
} else {
if (useChildLoader) {
parentCL = new OneShotClassLoader(runtime.getJRubyClassLoader());
} else {
parentCL = runtime.getJRubyClassLoader();
}
}
if (superClass.reifiedClass != null) {
reifiedParent = superClass.reifiedClass;
}
Class[] interfaces = Java.getInterfacesFromRubyClass(this);
String[] interfaceNames = new String[interfaces.length + 1];
// mark this as a Reified class
interfaceNames[0] = p(Reified.class);
// add the other user-specified interfaces
for (int i = 0; i < interfaces.length; i++) {
interfaceNames[i + 1] = p(interfaces[i]);
}
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
cw.visit(RubyInstanceConfig.JAVA_VERSION, ACC_PUBLIC + ACC_SUPER, javaPath, null, p(reifiedParent),
interfaceNames);
if (classAnnotations != null && classAnnotations.size() != 0) {
for (Map.Entry> entry : classAnnotations.entrySet()) {
Class annoType = entry.getKey();
Map fields = entry.getValue();
AnnotationVisitor av = cw.visitAnnotation(ci(annoType), true);
CodegenUtils.visitAnnotationFields(av, fields);
av.visitEnd();
}
}
// fields to hold Ruby and RubyClass references
cw.visitField(ACC_STATIC | ACC_PRIVATE, "ruby", ci(Ruby.class), null, null);
cw.visitField(ACC_STATIC | ACC_PRIVATE, "rubyClass", ci(RubyClass.class), null, null);
// static initializing method
SkinnyMethodAdapter m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_STATIC, "clinit", sig(void.class, Ruby.class, RubyClass.class), null, null);
m.start();
m.aload(0);
m.putstatic(javaPath, "ruby", ci(Ruby.class));
m.aload(1);
m.putstatic(javaPath, "rubyClass", ci(RubyClass.class));
m.voidreturn();
m.end();
// standard constructor that accepts Ruby, RubyClass
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC, "", sig(void.class, Ruby.class, RubyClass.class), null, null);
m.aload(0);
m.aload(1);
m.aload(2);
m.invokespecial(p(reifiedParent), "", sig(void.class, Ruby.class, RubyClass.class));
m.voidreturn();
m.end();
// no-arg constructor using static references to Ruby and RubyClass
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC, "", CodegenUtils.sig(void.class), null, null);
m.aload(0);
m.getstatic(javaPath, "ruby", ci(Ruby.class));
m.getstatic(javaPath, "rubyClass", ci(RubyClass.class));
m.invokespecial(p(reifiedParent), "", sig(void.class, Ruby.class, RubyClass.class));
m.voidreturn();
m.end();
// define fields
for (Map.Entry fieldSignature : getFieldSignatures().entrySet()) {
String fieldName = fieldSignature.getKey();
Class type = fieldSignature.getValue();
Map> fieldAnnos = getFieldAnnotations().get(fieldName);
FieldVisitor fieldVisitor = cw.visitField(ACC_PUBLIC, fieldName, ci(type), null, null);
if (fieldAnnos == null) {
continue;
}
for (Map.Entry> fieldAnno : fieldAnnos.entrySet()) {
Class annoType = fieldAnno.getKey();
AnnotationVisitor av = fieldVisitor.visitAnnotation(ci(annoType), true);
CodegenUtils.visitAnnotationFields(av, fieldAnno.getValue());
}
fieldVisitor.visitEnd();
}
// gather a list of instance methods, so we don't accidentally make static ones that conflict
Set instanceMethods = new HashSet();
// define instance methods
for (Map.Entry methodEntry : getMethods().entrySet()) {
String methodName = methodEntry.getKey();
if (!JavaNameMangler.willMethodMangleOk(methodName)) continue;
String javaMethodName = JavaNameMangler.mangleMethodName(methodName);
Map> methodAnnos = getMethodAnnotations().get(methodName);
List>> parameterAnnos = getParameterAnnotations().get(methodName);
Class[] methodSignature = getMethodSignatures().get(methodName);
String signature;
if (methodSignature == null) {
// non-signature signature with just IRubyObject
switch (methodEntry.getValue().getArity().getValue()) {
case 0:
signature = sig(IRubyObject.class);
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.aload(0);
m.ldc(methodName);
m.invokevirtual(javaPath, "callMethod", sig(IRubyObject.class, String.class));
break;
default:
signature = sig(IRubyObject.class, IRubyObject[].class);
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.aload(0);
m.ldc(methodName);
m.aload(1);
m.invokevirtual(javaPath, "callMethod", sig(IRubyObject.class, String.class, IRubyObject[].class));
}
m.areturn();
} else {
// generate a real method signature for the method, with to/from coercions
// indices for temp values
Class[] params = new Class[methodSignature.length - 1];
System.arraycopy(methodSignature, 1, params, 0, params.length);
int baseIndex = 1;
for (Class paramType : params) {
if (paramType == double.class || paramType == long.class) {
baseIndex += 2;
} else {
baseIndex += 1;
}
}
int rubyIndex = baseIndex;
signature = sig(methodSignature[0], params);
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.getstatic(javaPath, "ruby", ci(Ruby.class));
m.astore(rubyIndex);
m.aload(0); // self
m.ldc(methodName); // method name
RealClassGenerator.coerceArgumentsToRuby(m, params, rubyIndex);
m.invokevirtual(javaPath, "callMethod", sig(IRubyObject.class, String.class, IRubyObject[].class));
RealClassGenerator.coerceResultAndReturn(m, methodSignature[0]);
}
if (DEBUG_REIFY) LOG.debug("defining {}#{} as {}#{}", getName(), methodName, javaName, javaMethodName + signature);
instanceMethods.add(javaMethodName + signature);
m.end();
}
// define class/static methods
for (Map.Entry methodEntry : getMetaClass().getMethods().entrySet()) {
String methodName = methodEntry.getKey();
if (!JavaNameMangler.willMethodMangleOk(methodName)) continue;
String javaMethodName = JavaNameMangler.mangleMethodName(methodName);
Map> methodAnnos = getMetaClass().getMethodAnnotations().get(methodName);
List>> parameterAnnos = getMetaClass().getParameterAnnotations().get(methodName);
Class[] methodSignature = getMetaClass().getMethodSignatures().get(methodName);
String signature;
if (methodSignature == null) {
// non-signature signature with just IRubyObject
switch (methodEntry.getValue().getArity().getValue()) {
case 0:
signature = sig(IRubyObject.class);
if (instanceMethods.contains(javaMethodName + signature)) continue;
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS | ACC_STATIC, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.getstatic(javaPath, "rubyClass", ci(RubyClass.class));
//m.invokevirtual("org/jruby/RubyClass", "getMetaClass", sig(RubyClass.class) );
m.ldc(methodName); // Method name
m.invokevirtual("org/jruby/RubyClass", "callMethod", sig(IRubyObject.class, String.class) );
break;
default:
signature = sig(IRubyObject.class, IRubyObject[].class);
if (instanceMethods.contains(javaMethodName + signature)) continue;
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS | ACC_STATIC, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.getstatic(javaPath, "rubyClass", ci(RubyClass.class));
m.ldc(methodName); // Method name
m.aload(0);
m.invokevirtual("org/jruby/RubyClass", "callMethod", sig(IRubyObject.class, String.class, IRubyObject[].class) );
}
m.areturn();
} else {
// generate a real method signature for the method, with to/from coercions
// indices for temp values
Class[] params = new Class[methodSignature.length - 1];
System.arraycopy(methodSignature, 1, params, 0, params.length);
int baseIndex = 0;
for (Class paramType : params) {
if (paramType == double.class || paramType == long.class) {
baseIndex += 2;
} else {
baseIndex += 1;
}
}
int rubyIndex = baseIndex;
signature = sig(methodSignature[0], params);
if (instanceMethods.contains(javaMethodName + signature)) continue;
m = new SkinnyMethodAdapter(cw, ACC_PUBLIC | ACC_VARARGS | ACC_STATIC, javaMethodName, signature, null, null);
generateMethodAnnotations(methodAnnos, m, parameterAnnos);
m.getstatic(javaPath, "ruby", ci(Ruby.class));
m.astore(rubyIndex);
m.getstatic(javaPath, "rubyClass", ci(RubyClass.class));
m.ldc(methodName); // method name
RealClassGenerator.coerceArgumentsToRuby(m, params, rubyIndex);
m.invokevirtual("org/jruby/RubyClass", "callMethod", sig(IRubyObject.class, String.class, IRubyObject[].class));
RealClassGenerator.coerceResultAndReturn(m, methodSignature[0]);
}
if (DEBUG_REIFY) LOG.debug("defining {}.{} as {}.{}", getName(), methodName, javaName, javaMethodName + signature);
m.end();
}
cw.visitEnd();
byte[] classBytes = cw.toByteArray();
// Attempt to load the name we plan to use; skip reification if it exists already (see #1229).
Throwable failure = null;
try {
Class result = parentCL.defineClass(javaName, classBytes);
dumpReifiedClass(classDumpDir, javaPath, classBytes);
java.lang.reflect.Method clinit = result.getDeclaredMethod("clinit", Ruby.class, RubyClass.class);
clinit.invoke(null, runtime, this);
setClassAllocator(result);
reifiedClass = result;
return; // success
} catch (LinkageError le) {
// fall through to failure path
failure = le;
} catch (Exception e) {
failure = e;
}
// If we get here, there's some other class in this classloader hierarchy with the same name. In order to
// avoid a naming conflict, we set reified class to parent and skip reification.
if (RubyInstanceConfig.REIFY_LOG_ERRORS) {
LOG.error("failed to reify class " + getName() + " due to:");
LOG.error(failure);
}
if (superClass.reifiedClass != null) {
reifiedClass = superClass.reifiedClass;
allocator = superClass.allocator;
}
}
public void setReifiedClass(Class newReifiedClass) {
this.reifiedClass = newReifiedClass;
}
public Class getReifiedClass() {
return reifiedClass;
}
public Map>>> getParameterAnnotations() {
if (parameterAnnotations == null) return Collections.EMPTY_MAP;
return parameterAnnotations;
}
public synchronized void addParameterAnnotation(String method, int i, Class annoClass, Map value) {
if (parameterAnnotations == null) parameterAnnotations = new Hashtable>>>();
List>> paramList = parameterAnnotations.get(method);
if (paramList == null) {
paramList = new ArrayList>>(i + 1);
parameterAnnotations.put(method, paramList);
}
if (paramList.size() < i + 1) {
for (int j = paramList.size(); j < i + 1; j++) {
paramList.add(null);
}
}
if (annoClass != null && value != null) {
Map> annos = paramList.get(i);
if (annos == null) {
annos = new HashMap>();
paramList.set(i, annos);
}
annos.put(annoClass, value);
} else {
paramList.set(i, null);
}
}
public Map>> getMethodAnnotations() {
if (methodAnnotations == null) return Collections.EMPTY_MAP;
return methodAnnotations;
}
public Map>> getFieldAnnotations() {
if (fieldAnnotations == null) return Collections.EMPTY_MAP;
return fieldAnnotations;
}
public synchronized void addMethodAnnotation(String methodName, Class annotation, Map fields) {
if (methodAnnotations == null) methodAnnotations = new Hashtable>>();
Map> annos = methodAnnotations.get(methodName);
if (annos == null) {
annos = new Hashtable>();
methodAnnotations.put(methodName, annos);
}
annos.put(annotation, fields);
}
public synchronized void addFieldAnnotation(String fieldName, Class annotation, Map fields) {
if (fieldAnnotations == null) fieldAnnotations = new Hashtable>>();
Map> annos = fieldAnnotations.get(fieldName);
if (annos == null) {
annos = new Hashtable>();
fieldAnnotations.put(fieldName, annos);
}
annos.put(annotation, fields);
}
public Map getMethodSignatures() {
if (methodSignatures == null) return Collections.EMPTY_MAP;
return methodSignatures;
}
public Map getFieldSignatures() {
if (fieldSignatures == null) return Collections.EMPTY_MAP;
return fieldSignatures;
}
public synchronized void addMethodSignature(String methodName, Class[] types) {
if (methodSignatures == null) methodSignatures = new Hashtable();
methodSignatures.put(methodName, types);
}
public synchronized void addFieldSignature(String fieldName, Class type) {
if (fieldSignatures == null) fieldSignatures = new LinkedHashMap();
fieldSignatures.put(fieldName, type);
}
public Map> getClassAnnotations() {
if (classAnnotations == null) return Collections.EMPTY_MAP;
return classAnnotations;
}
public synchronized void addClassAnnotation(Class annotation, Map fields) {
if (classAnnotations == null) classAnnotations = new Hashtable>();
classAnnotations.put(annotation, fields);
}
@Override
public Object toJava(Class klass) {
Class returnClass = null;
if (klass == Class.class) {
// Class requested; try java_class or else return nearest reified class
if (respondsTo("java_class")) {
return callMethod("java_class").toJava(klass);
} else {
for (RubyClass current = this; current != null; current = current.getSuperClass()) {
returnClass = current.getReifiedClass();
if (returnClass != null) return returnClass;
}
}
// should never fall through, since RubyObject has a reified class
}
if (klass.isAssignableFrom(RubyClass.class)) {
// they're asking for something RubyClass extends, give them that
return this;
}
return super.toJava(klass);
}
/**
* An enum defining the type of marshaling a given class's objects employ.
*/
private static enum MarshalType {
DEFAULT, NEW_USER, OLD_USER, DEFAULT_SLOW, NEW_USER_SLOW, USER_SLOW
}
/**
* A tuple representing the mechanism by which objects should be marshaled.
*
* This tuple caches the type of marshaling to perform (from @MarshalType),
* the method to be used for marshaling data (either marshal_load/dump or
* _load/_dump), and the generation of the class at the time this tuple was
* created. When "dump" or "load" are invoked, they either call the default
* marshaling logic (@MarshalType.DEFAULT) or they further invoke the cached
* marshal_dump/load or _dump/_load methods to marshal the data.
*
* It is expected that code outside MarshalTuple will validate that the
* generation number still matches before invoking load or dump.
*/
private static class MarshalTuple {
/**
* Construct a new MarshalTuple with the given values.
*
* @param method The method to invoke, or null in the case of default
* marshaling.
* @param type The type of marshaling to perform, from @MarshalType
* @param generation The generation of the associated class at the time
* of creation.
*/
public MarshalTuple(DynamicMethod method, MarshalType type, int generation) {
this.method = method;
this.type = type;
this.generation = generation;
}
/**
* Dump the given object to the given stream, using the appropriate
* marshaling method.
*
* @param stream The stream to which to dump
* @param object The object to dump
* @throws IOException If there is an IO error during dumping
*/
public void dump(MarshalStream stream, IRubyObject object) throws IOException {
switch (type) {
case DEFAULT:
stream.writeDirectly(object);
return;
case NEW_USER:
stream.userNewMarshal(object, method);
return;
case OLD_USER:
stream.userMarshal(object, method);
return;
case DEFAULT_SLOW:
if (object.respondsTo("marshal_dump")) {
stream.userNewMarshal(object);
} else if (object.respondsTo("_dump")) {
stream.userMarshal(object);
} else {
stream.writeDirectly(object);
}
return;
}
}
/** A "null" tuple, used as the default value for caches. */
public static final MarshalTuple NULL_TUPLE = new MarshalTuple(null, null, 0);
/** The method associated with this tuple. */
public final DynamicMethod method;
/** The type of marshaling that will be performed */
public final MarshalType type;
/** The generation of the associated class at the time of creation */
public final int generation;
}
/**
* Marshal the given object to the marshaling stream, being "smart" and
* caching how to do that marshaling.
*
* If the class defines a custom "respond_to?" method, then the behavior of
* dumping could vary without our class structure knowing it. As a result,
* we do only the slow-path classic behavior.
*
* If the class defines a real "marshal_dump" method, we cache and use that.
*
* If the class defines a real "_dump" method, we cache and use that.
*
* If the class neither defines none of the above methods, we use a fast
* path directly to the default dumping logic.
*
* @param stream The stream to which to marshal the data
* @param target The object whose data should be marshaled
* @throws IOException If there is an IO exception while writing to the
* stream.
*/
public void smartDump(MarshalStream stream, IRubyObject target) throws IOException {
MarshalTuple tuple;
if ((tuple = cachedDumpMarshal).generation == generation) {
} else {
// recache
DynamicMethod method = searchMethod("respond_to?");
if (!method.equals(runtime.getRespondToMethod()) && !method.isUndefined()) {
// custom respond_to?, always do slow default marshaling
tuple = (cachedDumpMarshal = new MarshalTuple(null, MarshalType.DEFAULT_SLOW, generation));
} else if (!(method = searchMethod("marshal_dump")).isUndefined()) {
// object really has 'marshal_dump', cache "new" user marshaling
tuple = (cachedDumpMarshal = new MarshalTuple(method, MarshalType.NEW_USER, generation));
} else if (!(method = searchMethod("_dump")).isUndefined()) {
// object really has '_dump', cache "old" user marshaling
tuple = (cachedDumpMarshal = new MarshalTuple(method, MarshalType.OLD_USER, generation));
} else {
// no respond_to?, marshal_dump, or _dump, so cache default marshaling
tuple = (cachedDumpMarshal = new MarshalTuple(null, MarshalType.DEFAULT, generation));
}
}
tuple.dump(stream, target);
}
/**
* Load marshaled data into a blank target object using marshal_load, being
* "smart" and caching the mechanism for invoking marshal_load.
*
* If the class implements a custom respond_to?, cache nothing and go slow
* path invocation of respond_to? and marshal_load every time. Raise error
* if respond_to? :marshal_load returns true and no :marshal_load is
* defined.
*
* If the class implements marshal_load, cache and use that.
*
* Otherwise, error, since marshal_load is not present.
*
* @param target The blank target object into which marshal_load will
* deserialize the given data
* @param data The marshaled data
* @return The fully-populated target object
*/
public IRubyObject smartLoadNewUser(IRubyObject target, IRubyObject data) {
ThreadContext context = runtime.getCurrentContext();
CacheEntry cache;
if ((cache = cachedLoad).token == generation) {
cache.method.call(context, target, this, "marshal_load", data);
return target;
} else {
DynamicMethod method = searchMethod("respond_to?");
if (!method.equals(runtime.getRespondToMethod()) && !method.isUndefined()) {
// custom respond_to?, cache nothing and use slow path
if (method.call(context, target, this, "respond_to?", runtime.newSymbol("marshal_load")).isTrue()) {
target.callMethod(context, "marshal_load", data);
return target;
} else {
throw runtime.newTypeError("class " + getName() + " needs to have method `marshal_load'");
}
} else if (!(cache = searchWithCache("marshal_load")).method.isUndefined()) {
// real marshal_load defined, cache and call it
cachedLoad = cache;
cache.method.call(context, target, this, "marshal_load", data);
return target;
} else {
// go ahead and call, method_missing might handle it
target.callMethod(context, "marshal_load", data);
return target;
}
}
}
/**
* Load marshaled data into a blank target object using _load, being
* "smart" and caching the mechanism for invoking _load.
*
* If the metaclass implements custom respond_to?, cache nothing and go slow
* path invocation of respond_to? and _load every time. Raise error if
* respond_to? :_load returns true and no :_load is defined.
*
* If the metaclass implements _load, cache and use that.
*
* Otherwise, error, since _load is not present.
*
* @param data The marshaled data, to be reconstituted into an object by
* _load
* @return The fully-populated target object
*/
public IRubyObject smartLoadOldUser(IRubyObject data) {
ThreadContext context = runtime.getCurrentContext();
CacheEntry cache;
if ((cache = getSingletonClass().cachedLoad).token == getSingletonClass().generation) {
return cache.method.call(context, this, getSingletonClass(), "_load", data);
} else {
DynamicMethod method = getSingletonClass().searchMethod("respond_to?");
if (!method.equals(runtime.getRespondToMethod()) && !method.isUndefined()) {
// custom respond_to?, cache nothing and use slow path
if (method.call(context, this, getSingletonClass(), "respond_to?", runtime.newSymbol("_load")).isTrue()) {
return callMethod(context, "_load", data);
} else {
throw runtime.newTypeError("class " + getName() + " needs to have method `_load'");
}
} else if (!(cache = getSingletonClass().searchWithCache("_load")).method.isUndefined()) {
// real _load defined, cache and call it
getSingletonClass().cachedLoad = cache;
return cache.method.call(context, this, getSingletonClass(), "_load", data);
} else {
// provide an error, since it doesn't exist
throw runtime.newTypeError("class " + getName() + " needs to have method `_load'");
}
}
}
protected final Ruby runtime;
private ObjectAllocator allocator; // the default allocator
protected ObjectMarshal marshal;
private Set subclasses;
public static final int CS_IDX_INITIALIZE = 0;
public static final String[] CS_NAMES = {
"initialize"
};
private final CallSite[] baseCallSites = new CallSite[CS_NAMES.length];
{
for(int i = 0; i < CS_NAMES.length; i++) {
baseCallSites[i] = MethodIndex.getFunctionalCallSite(CS_NAMES[i]);
}
}
private CallSite[] extraCallSites;
private Class reifiedClass;
private Map>>> parameterAnnotations;
private Map>> methodAnnotations;
private Map>> fieldAnnotations;
private Map methodSignatures;
private Map fieldSignatures;
private Map> classAnnotations;
/** A cached tuple of method, type, and generation for dumping */
private MarshalTuple cachedDumpMarshal = MarshalTuple.NULL_TUPLE;
/** A cached tuple of method and generation for marshal loading */
private CacheEntry cachedLoad = CacheEntry.NULL_CACHE;
/** The "real" class, used by includes and singletons to locate the actual type of the object */
private final RubyClass realClass;
/** Variable table manager for this class */
private final VariableTableManager variableTableManager;
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy