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org.jruby.embed.internal.EmbedRubyObjectAdapterImpl Maven / Gradle / Ivy
/**
* **** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common 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/cpl-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) 2009-2010 Yoko Harada
*
* 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 CPL, 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 CPL, the GPL or the LGPL.
* **** END LICENSE BLOCK *****
*/
package org.jruby.embed.internal;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import org.jruby.Ruby;
import org.jruby.RubyInteger;
import org.jruby.RubyModule;
import org.jruby.RubyNil;
import org.jruby.RubyObject;
import org.jruby.RubyObjectAdapter;
import org.jruby.RubyString;
import org.jruby.embed.AttributeName;
import org.jruby.embed.EmbedEvalUnit;
import org.jruby.embed.EmbedRubyObjectAdapter;
import org.jruby.embed.InvokeFailedException;
import org.jruby.embed.ScriptingContainer;
import org.jruby.embed.variable.BiVariable;
import org.jruby.embed.variable.InstanceVariable;
import org.jruby.exceptions.RaiseException;
import org.jruby.javasupport.Java;
import org.jruby.javasupport.JavaEmbedUtils;
import org.jruby.javasupport.JavaObject;
import org.jruby.javasupport.JavaUtil;
import org.jruby.javasupport.util.RuntimeHelpers;
import org.jruby.runtime.Block;
import org.jruby.runtime.DynamicScope;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.scope.ManyVarsDynamicScope;
/**
* Implementation of {@link EmbedRubyObjectAdapter}. Users get an instance of this
* class by newObjectAdapter() method of {@link ScriptingContainer}.
*
* @author Yoko Harada
*/
public class EmbedRubyObjectAdapterImpl implements EmbedRubyObjectAdapter {
private RubyObjectAdapter adapter = JavaEmbedUtils.newObjectAdapter();
private ScriptingContainer container;
public enum MethodType {
CALLMETHOD_NOARG,
CALLMETHOD,
CALLMETHOD_WITHBLOCK,
CALLSUPER,
CALLSUPER_WITHBLOCK
}
public EmbedRubyObjectAdapterImpl(ScriptingContainer container) {
this.container = container;
}
public boolean isKindOf(IRubyObject value, RubyModule rubyModule) {
return adapter.isKindOf(value, rubyModule);
}
public IRubyObject[] convertToJavaArray(IRubyObject array) {
return adapter.convertToJavaArray(array);
}
public RubyInteger convertToRubyInteger(IRubyObject obj) {
return adapter.convertToRubyInteger(obj);
}
public RubyString convertToRubyString(IRubyObject obj) {
return adapter.convertToRubyString(obj);
}
public IRubyObject setInstanceVariable(IRubyObject obj, String variableName, IRubyObject value) {
BiVariableMap map = container.getVarMap();
synchronized (map) {
if (map.containsKey(variableName)) {
BiVariable bv = map.getVariable((RubyObject)container.getProvider().getRuntime().getTopSelf(), variableName);
bv.setRubyObject(value);
} else {
InstanceVariable iv = new InstanceVariable(obj, variableName, value);
map.update(variableName, iv);
}
}
return obj.getInstanceVariables().setInstanceVariable(variableName, value);
}
public IRubyObject getInstanceVariable(IRubyObject obj, String variableName) {
BiVariableMap map = container.getVarMap();
synchronized (map) {
if (map.containsKey(variableName)) {
BiVariable bv = map.getVariable((RubyObject)container.getProvider().getRuntime().getTopSelf(), variableName);
return bv.getRubyObject();
}
}
return null;
}
public IRubyObject callMethod(IRubyObject receiver, String methodName) {
return adapter.callMethod(receiver, methodName);
}
public IRubyObject callMethod(IRubyObject receiver, String methodName, IRubyObject singleArg) {
return adapter.callMethod(receiver, methodName, singleArg);
}
public IRubyObject callMethod(IRubyObject receiver, String methodName, IRubyObject[] args) {
return adapter.callMethod(receiver, methodName, args);
}
public IRubyObject callMethod(IRubyObject receiver, String methodName, IRubyObject[] args, Block block) {
return adapter.callMethod(receiver, methodName, args, block);
}
public IRubyObject callSuper(IRubyObject receiver, IRubyObject[] args) {
return adapter.callSuper(receiver, args);
}
public IRubyObject callSuper(IRubyObject receiver, IRubyObject[] args, Block block) {
return adapter.callSuper(receiver, args, block);
}
public T callMethod(Object receiver, String methodName, Class returnType) {
try {
return call(MethodType.CALLMETHOD_NOARG, returnType, receiver, methodName, null, null);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Object singleArg, Class returnType) {
try {
return call(MethodType.CALLMETHOD, returnType, receiver, methodName, null, null, singleArg);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Object[] args, Class returnType) {
try {
return call(MethodType.CALLMETHOD, returnType, receiver, methodName, null, null, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Object[] args, Block block, Class returnType) {
try {
return call(MethodType.CALLMETHOD_WITHBLOCK, returnType, receiver, methodName, block, null, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Class returnType, EmbedEvalUnit unit) {
try {
return call(MethodType.CALLMETHOD_NOARG, returnType, receiver, methodName, null, unit);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Object[] args, Class returnType, EmbedEvalUnit unit) {
try {
return call(MethodType.CALLMETHOD, returnType, receiver, methodName, null, unit, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callMethod(Object receiver, String methodName, Object[] args, Block block, Class returnType, EmbedEvalUnit unit) {
try {
return call(MethodType.CALLMETHOD_WITHBLOCK, returnType, receiver, methodName, block, unit, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callSuper(Object receiver, Object[] args, Class returnType) {
try {
return call(MethodType.CALLSUPER, returnType, receiver, null, null, null, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public T callSuper(Object receiver, Object[] args, Block block, Class returnType) {
try {
return call(MethodType.CALLSUPER_WITHBLOCK, returnType, receiver, null, block, null, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public Object callMethod(Object receiver, String methodName, Object... args) {
try {
if (args.length == 0) {
return call(MethodType.CALLMETHOD_NOARG, Object.class, receiver, methodName, null, null);
} else {
return call(MethodType.CALLMETHOD, Object.class, receiver, methodName, null, null, args);
}
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
public Object callMethod(Object receiver, String methodName, Block block, Object... args) {
try {
if (args.length == 0) {
throw new IllegalArgumentException("needs at least one argument in a method");
}
return call(MethodType.CALLMETHOD_WITHBLOCK, Object.class, receiver, methodName, block, null, args);
} catch (InvokeFailedException e) {
throw e;
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
}
}
private T call(MethodType type, Class returnType, Object receiver, String methodName, Block block, EmbedEvalUnit unit, Object... args) {
if (methodName == null || methodName.length()==0) {
return null;
}
Ruby runtime = container.getProvider().getRuntime();
RubyObject rubyReceiver = getReceiverObject(runtime, receiver);
boolean sharing_variables = true;
Object obj = container.getAttribute(AttributeName.SHARING_VARIABLES);
if (obj != null && obj instanceof Boolean && ((Boolean) obj) == false) {
sharing_variables = false;
}
try {
if (sharing_variables) {
ManyVarsDynamicScope scope;
if (unit != null && unit.getScope() != null) scope = unit.getScope();
else scope = EmbedRubyRuntimeAdapterImpl.getManyVarsDynamicScope(container, 0);
container.getVarMap().inject(scope, 0, rubyReceiver);
runtime.getCurrentContext().pushScope(scope);
}
IRubyObject result = callEachType(type, rubyReceiver, methodName, block, args);
if (sharing_variables) {
container.getVarMap().retrieve(rubyReceiver);
}
if (!(result instanceof RubyNil) && returnType != null) {
Object ret = JavaEmbedUtils.rubyToJava(runtime, result, returnType);
return ret != null ? returnType.cast(ret) : null;
}
return null;
} catch (RaiseException e) {
runtime.printError(e.getException());
throw new InvokeFailedException(e.getMessage(), e);
} catch (Throwable e) {
Writer w = container.getErrorWriter();
if (w instanceof PrintWriter) {
e.printStackTrace((PrintWriter)w);
} else {
try {
w.write(e.getMessage());
} catch (IOException ex) {
throw new InvokeFailedException(ex);
}
}
throw new InvokeFailedException(e);
} finally {
if (sharing_variables) {
runtime.getCurrentContext().popScope();
}
}
}
private RubyObject getReceiverObject(Ruby runtime, Object receiver) {
if (receiver == null || !(receiver instanceof IRubyObject) || receiver instanceof RubyNil) {
return (RubyObject)runtime.getTopSelf();
}
else if (receiver instanceof RubyObject) return (RubyObject)receiver;
else return (RubyObject)((IRubyObject)receiver).getRuntime().getTopSelf();
}
private IRubyObject callEachType(MethodType type, IRubyObject rubyReceiver, String methodName, Block block, Object... args) {
Ruby runtime = rubyReceiver.getRuntime();
IRubyObject[] rubyArgs = null;
if (args != null && args.length > 0) {
rubyArgs = JavaUtil.convertJavaArrayToRuby(runtime, args);
for (int i = 0; i < rubyArgs.length; i++) {
IRubyObject obj = rubyArgs[i];
if (obj instanceof JavaObject) {
rubyArgs[i] = Java.wrap(runtime, obj);
}
}
}
ThreadContext context = runtime.getCurrentContext();
switch (type) {
case CALLMETHOD_NOARG:
return RuntimeHelpers.invoke(context, rubyReceiver, methodName);
case CALLMETHOD:
return RuntimeHelpers.invoke(context, rubyReceiver, methodName, rubyArgs);
case CALLMETHOD_WITHBLOCK:
return RuntimeHelpers.invoke(context, rubyReceiver, methodName, rubyArgs, block);
case CALLSUPER:
return RuntimeHelpers.invokeSuper(context, rubyReceiver, rubyArgs, Block.NULL_BLOCK);
case CALLSUPER_WITHBLOCK:
return RuntimeHelpers.invokeSuper(context, rubyReceiver, rubyArgs, block);
default:
break;
}
return null;
}
}
