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cn.nukkit.plugin.js.JSIInitiator Maven / Gradle / Ivy
package cn.nukkit.plugin.js;
import cn.nukkit.plugin.CommonJSPlugin;
import cn.nukkit.plugin.js.external.ExternalArray;
import cn.nukkit.plugin.js.external.ExternalFunction;
import cn.nukkit.plugin.js.external.ExternalObject;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import it.unimi.dsi.fastutil.longs.LongList;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Value;
import org.graalvm.polyglot.proxy.ProxyArray;
import org.graalvm.polyglot.proxy.ProxyExecutable;
import java.util.Map;
import java.util.Timer;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
public final class JSIInitiator {
private static final Value NULL = Value.asValue(null);
public static Timer jsTimer = new Timer();
public static final Long2ObjectMap jsTimeTaskMap = new Long2ObjectOpenHashMap<>();
public static final Map contextTimerIdMap = new ConcurrentHashMap<>();
public static final Multimap externalMap = HashMultimap.create(4, 4);
private static final AtomicLong globalTimerId = new AtomicLong();
public static void reset() {
jsTimer = new Timer();
jsTimeTaskMap.clear();
contextTimerIdMap.clear();
globalTimerId.set(0);
}
public static void init(Context context) {
initTimer(context);
}
public static void closeContext(Context context) {
if (contextTimerIdMap.containsKey(context)) {
for (long i : contextTimerIdMap.get(context)) {
jsTimeTaskMap.remove(i).cancel();
}
}
if (externalMap.containsKey(context)) {
for (var each : externalMap.removeAll(context)) {
var ret = CommonJSPlugin.jsExternalMap.remove(each);
if (ret != null) {
ret.setAlive(false);
}
}
}
}
@SuppressWarnings("DuplicatedCode")
public static void initTimer(Context context) {
var global = context.getBindings("js");
global.putMember("setInterval", (ProxyExecutable) arguments -> {
var len = arguments.length;
if (len == 0) {
throw new IllegalArgumentException("Failed to execute 'setInterval': 1 argument required, but only 0 present.");
}
var args = new Object[len - 1];
if (args.length != 0) {
System.arraycopy(arguments, 1, args, 0, len - 1);
}
var id = globalTimerId.getAndIncrement();
var task = new JSTimerTask(id, context, arguments[0], args);
var interval = 0L;
if (len != 1) {
var tmp = arguments[1];
if (tmp.isNumber()) {
interval = tmp.asLong();
}
}
synchronized (jsTimeTaskMap) {
jsTimeTaskMap.put(id, task);
}
addContextTimerId(context, id);
jsTimer.scheduleAtFixedRate(task, interval, interval);
return Value.asValue(id);
});
global.putMember("setTimeout", (ProxyExecutable) arguments -> {
var len = arguments.length;
if (len == 0) {
throw new IllegalArgumentException("Failed to execute 'setTimeout': 1 argument required, but only 0 present.");
}
var args = new Object[len - 1];
if (args.length != 0) {
System.arraycopy(arguments, 1, args, 0, len - 1);
}
var id = globalTimerId.getAndIncrement();
var task = new JSTimerTask(id, context, arguments[0], args);
var timeout = 0L;
if (len != 1) {
var tmp = arguments[1];
if (tmp.isNumber()) {
timeout = tmp.asLong();
}
}
synchronized (jsTimeTaskMap) {
jsTimeTaskMap.put(id, task);
}
addContextTimerId(context, id);
jsTimer.schedule(task, timeout);
return Value.asValue(id);
});
global.putMember("clearInterval", (ProxyExecutable) arguments -> {
if (arguments.length > 0) {
var tmp = arguments[0];
if (tmp.isNumber()) {
removeContextTimerId(context, tmp.asLong());
}
}
return NULL;
});
global.putMember("clearTimeout", (ProxyExecutable) arguments -> {
if (arguments.length > 0) {
var tmp = arguments[0];
if (tmp.isNumber()) {
removeContextTimerId(context, tmp.asLong());
}
}
return NULL;
});
global.putMember("exposeFunction", (ProxyExecutable) arguments -> {
if (arguments.length > 1) {
var key = arguments[0];
var value = arguments[1];
if (key.isString() && value.canExecute()) {
var k = key.asString();
CommonJSPlugin.jsExternalMap.put(k, new ExternalFunction(context, value));
externalMap.put(context, k);
}
}
return NULL;
});
global.putMember("exposeObject", (ProxyExecutable) arguments -> {
if (arguments.length > 1) {
var key = arguments[0];
var value = arguments[1];
if (key.isString()) {
var k = key.asString();
CommonJSPlugin.jsExternalMap.put(k, new ExternalObject(context, value));
externalMap.put(context, k);
}
}
return NULL;
});
global.putMember("exposeArray", (ProxyExecutable) arguments -> {
if (arguments.length > 1) {
var key = arguments[0];
var value = arguments[1];
if (key.isString() && value.hasArrayElements()) {
var k = key.asString();
CommonJSPlugin.jsExternalMap.put(k, new ExternalArray(context, value));
externalMap.put(context, k);
}
}
return NULL;
});
global.putMember("contain", (ProxyExecutable) arguments -> {
if (arguments.length == 1) {
var tmp = arguments[0];
if (tmp.isString()) {
return CommonJSPlugin.jsExternalMap.get(tmp.asString());
} else {
return NULL;
}
} else {
var externals = new JSExternal[arguments.length];
for (int i = 0; i < arguments.length; i++) {
var tmp = arguments[i];
if (tmp.isString()) {
externals[i] = CommonJSPlugin.jsExternalMap.get(tmp.asString());
}
}
return ProxyArray.fromArray((Object[]) externals);
}
});
}
private static void addContextTimerId(Context context, long timerId) {
var idList = contextTimerIdMap.get(context);
if (idList != null) {
idList.add(timerId);
} else {
idList = new LongArrayList();
idList.add(timerId);
contextTimerIdMap.put(context, idList);
}
}
private static void removeContextTimerId(Context context, long timerId) {
synchronized (jsTimeTaskMap) {
jsTimeTaskMap.remove(timerId).cancel();
}
var idList = contextTimerIdMap.get(context);
if (idList != null) {
idList.rem(timerId);
}
}
}
