Remove nashorn scripting engine (#1068)

- Remove the ScriptTranspiler as es6 is no longer supported

worldedit-core/src/main/java/com/sk89q/worldedit/scripting/NashornCraftScriptEngine.java

@@ -1,78 +0,0 @@
-/*
- * 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 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.sk89q.worldedit.scripting;
-
-import com.boydti.fawe.Fawe;
-import com.sk89q.worldedit.WorldEditException;
-import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
-
-import java.util.Map;
-import javax.script.ScriptEngine;
-import javax.script.ScriptException;
-import javax.script.SimpleBindings;
-
-public class NashornCraftScriptEngine implements CraftScriptEngine {
-    private static NashornScriptEngineFactory FACTORY;
-    private int timeLimit;
-
-    @Override
-    public void setTimeLimit(int milliseconds) {
-        timeLimit = milliseconds;
-    }
-
-    @Override
-    public int getTimeLimit() {
-        return timeLimit;
-    }
-
-    @Override
-    public Object evaluate(String script, String filename, Map<String, Object> args) throws Throwable {
-        ClassLoader cl = Fawe.get().getClass().getClassLoader();
-        Thread.currentThread().setContextClassLoader(cl);
-        synchronized (NashornCraftScriptEngine.class) {
-            if (FACTORY == null) {
-                FACTORY = new NashornScriptEngineFactory();
-            }
-        }
-        ScriptEngine engine = FACTORY.getScriptEngine("--language=es6");
-        SimpleBindings bindings = new SimpleBindings();
-
-        for (Map.Entry<String, Object> entry : args.entrySet()) {
-            bindings.put(entry.getKey(), entry.getValue());
-        }
-
-       try {
-           return engine.eval(script, bindings);
-        } catch (Error e) {
-            e.printStackTrace();
-            throw new ScriptException(e.getMessage());
-        } catch (Throwable e) {
-            e.printStackTrace();
-            while (e.getCause() != null) {
-                e = e.getCause();
-            }
-            if (e instanceof WorldEditException) {
-                throw e;
-            }
-            throw e;
-        }
-    }
-
-}

worldedit-core/src/main/java/com/sk89q/worldedit/scripting/compat/ScriptTranspiler.java

@@ -1,38 +0,0 @@
-/*
- * 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 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.sk89q.worldedit.scripting.compat;
-
-import java.io.IOException;
-import java.io.Reader;
-
-/**
- * Transpile a script from one (version) of a language to another.
- */
-public interface ScriptTranspiler {
-
-    /**
-     * Given input {@code script}, return the transpiled script.
-     *
-     * @param script the script to transpile
-     * @return the new script
-     */
-    Reader transpile(Reader script) throws IOException;
-
-}