--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/JSONFunctions.java 2020-04-15 18:49:53.000000000 +0530 +++ /dev/null 2020-04-15 18:49:53.000000000 +0530 @@ -1,157 +0,0 @@ -/* - * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code 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 - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package jdk.nashorn.internal.runtime; - -import java.lang.invoke.MethodHandle; -import java.util.concurrent.Callable; -import jdk.nashorn.internal.objects.Global; -import jdk.nashorn.internal.parser.JSONParser; -import jdk.nashorn.internal.runtime.arrays.ArrayIndex; -import jdk.nashorn.internal.runtime.linker.Bootstrap; - -/** - * Utilities used by "JSON" object implementation. - */ -public final class JSONFunctions { - private JSONFunctions() {} - - private static final Object REVIVER_INVOKER = new Object(); - - private static MethodHandle getREVIVER_INVOKER() { - return Context.getGlobal().getDynamicInvoker(REVIVER_INVOKER, - new Callable() { - @Override - public MethodHandle call() { - return Bootstrap.createDynamicCallInvoker(Object.class, - Object.class, Object.class, String.class, Object.class); - } - }); - } - - /** - * Returns JSON-compatible quoted version of the given string. - * - * @param str String to be quoted - * @return JSON-compatible quoted string - */ - public static String quote(final String str) { - return JSONParser.quote(str); - } - - /** - * Parses the given JSON text string and returns object representation. - * - * @param text JSON text to be parsed - * @param reviver optional value: function that takes two parameters (key, value) - * @return Object representation of JSON text given - */ - public static Object parse(final Object text, final Object reviver) { - final String str = JSType.toString(text); - final Global global = Context.getGlobal(); - final boolean dualFields = ((ScriptObject) global).useDualFields(); - final JSONParser parser = new JSONParser(str, global, dualFields); - final Object value; - - try { - value = parser.parse(); - } catch (final ParserException e) { - throw ECMAErrors.syntaxError(e, "invalid.json", e.getMessage()); - } - - return applyReviver(global, value, reviver); - } - - // -- Internals only below this point - - // parse helpers - - // apply 'reviver' function if available - private static Object applyReviver(final Global global, final Object unfiltered, final Object reviver) { - if (Bootstrap.isCallable(reviver)) { - final ScriptObject root = global.newObject(); - root.addOwnProperty("", Property.WRITABLE_ENUMERABLE_CONFIGURABLE, unfiltered); - return walk(root, "", reviver); - } - return unfiltered; - } - - // This is the abstract "Walk" operation from the spec. - private static Object walk(final ScriptObject holder, final Object name, final Object reviver) { - final Object val = holder.get(name); - if (val instanceof ScriptObject) { - final ScriptObject valueObj = (ScriptObject)val; - if (valueObj.isArray()) { - final int length = JSType.toInteger(valueObj.getLength()); - for (int i = 0; i < length; i++) { - final String key = Integer.toString(i); - final Object newElement = walk(valueObj, key, reviver); - - if (newElement == ScriptRuntime.UNDEFINED) { - valueObj.delete(i, false); - } else { - setPropertyValue(valueObj, key, newElement); - } - } - } else { - final String[] keys = valueObj.getOwnKeys(false); - for (final String key : keys) { - final Object newElement = walk(valueObj, key, reviver); - - if (newElement == ScriptRuntime.UNDEFINED) { - valueObj.delete(key, false); - } else { - setPropertyValue(valueObj, key, newElement); - } - } - } - } - - try { - // Object.class, ScriptFunction.class, ScriptObject.class, String.class, Object.class); - return getREVIVER_INVOKER().invokeExact(reviver, (Object)holder, JSType.toString(name), val); - } catch(Error|RuntimeException t) { - throw t; - } catch(final Throwable t) { - throw new RuntimeException(t); - } - } - - // add a new property if does not exist already, or else set old property - private static void setPropertyValue(final ScriptObject sobj, final String name, final Object value) { - final int index = ArrayIndex.getArrayIndex(name); - if (ArrayIndex.isValidArrayIndex(index)) { - // array index key - sobj.defineOwnProperty(index, value); - } else if (sobj.getMap().findProperty(name) != null) { - // pre-existing non-inherited property, call set - sobj.set(name, value, 0); - } else { - // add new property - sobj.addOwnProperty(name, Property.WRITABLE_ENUMERABLE_CONFIGURABLE, value); - } - } - -}