/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit team and contributors
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.scripting.java;
import java.io.IOException;
import java.io.Reader;
import javax.script.AbstractScriptEngine;
import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptException;
import javax.script.SimpleBindings;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.ImporterTopLevel;
import org.mozilla.javascript.JavaScriptException;
import org.mozilla.javascript.RhinoException;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import com.sk89q.worldedit.scripting.RhinoContextFactory;
public class RhinoScriptEngine extends AbstractScriptEngine {
private ScriptEngineFactory factory;
private Context cx;
public RhinoScriptEngine() {
RhinoContextFactory factory = new RhinoContextFactory(3000);
factory.enterContext();
}
@Override
public Bindings createBindings() {
return new SimpleBindings();
}
@Override
public Object eval(String script, ScriptContext context)
throws ScriptException {
Scriptable scope = setupScope(cx, context);
String filename = (filename = (String) get(ScriptEngine.FILENAME)) == null
? "<unknown>" : filename;
try {
return cx.evaluateString(scope, script, filename, 1, null);
} catch (RhinoException e) {
String msg;
int line = (line = e.lineNumber()) == 0 ? -1 : line;
if (e instanceof JavaScriptException) {
msg = String.valueOf(((JavaScriptException) e).getValue());
} else {
msg = e.getMessage();
}
ScriptException scriptException =
new ScriptException(msg, e.sourceName(), line);
scriptException.initCause(e);
throw scriptException;
} finally {
Context.exit();
}
}
@Override
public Object eval(Reader reader, ScriptContext context)
throws ScriptException {
Scriptable scope = setupScope(cx, context);
String filename = (filename = (String) get(ScriptEngine.FILENAME)) == null
? "<unknown>" : filename;
try {
return cx.evaluateReader(scope, reader, filename, 1, null);
} catch (RhinoException e) {
String msg;
int line = (line = e.lineNumber()) == 0 ? -1 : line;
if (e instanceof JavaScriptException) {
msg = String.valueOf(((JavaScriptException) e).getValue());
} else {
msg = e.getMessage();
}
ScriptException scriptException =
new ScriptException(msg, e.sourceName(), line);
scriptException.initCause(e);
throw scriptException;
} catch (IOException e) {
throw new ScriptException(e);
} finally {
Context.exit();
}
}
@Override
public ScriptEngineFactory getFactory() {
if (factory != null) {
return factory;
} else {
return new RhinoScriptEngineFactory();
}
}
private Scriptable setupScope(Context cx, ScriptContext context) {
ScriptableObject scriptable = new ImporterTopLevel(cx);
Scriptable scope = cx.initStandardObjects(scriptable);
//ScriptableObject.putProperty(scope, "argv", Context.javaToJS(args, scope));
return scope;
}
}