jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/objects/NativeFunction.java@b1980b5f00a1 (annotated)

src/jdk/nashorn/internal/objects/NativeFunction.java@b1980b5f00a1 (annotated)

src/jdk/nashorn/internal/objects/NativeFunction.java

Wed, 03 Jul 2013 13:03:36 +0200

author: lagergren
date: Wed, 03 Jul 2013 13:03:36 +0200
changeset 405: b1980b5f00a1
parent 380: 80c66d3fd872
child 414: ec84ba68ad39
permissions: -rw-r--r--

8019585: Sometimes a var declaration using itself in its init wasn't declared as canBeUndefined, causing erroneous bytecode
Reviewed-by: sundar, attila

 /*
  * 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.objects;
 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
 import java.util.List;
 import jdk.nashorn.api.scripting.ScriptObjectMirror;
 import jdk.nashorn.internal.objects.annotations.Attribute;
 import jdk.nashorn.internal.objects.annotations.Constructor;
 import jdk.nashorn.internal.objects.annotations.Function;
 import jdk.nashorn.internal.objects.annotations.ScriptClass;
 import jdk.nashorn.internal.parser.Parser;
 import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.ParserException;
 import jdk.nashorn.internal.runtime.PropertyMap;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.Source;
 /**
  * ECMA 15.3 Function Objects
  *
  * Note: instances of this class are never created. This class is not even a
  * subclass of ScriptObject. But, we use this class to generate prototype and
  * constructor for "Function".
  */
 @ScriptClass("Function")
 public final class NativeFunction {
     // initialized by nasgen
     @SuppressWarnings("unused")
     private static PropertyMap $nasgenmap$;
     // do *not* create me!
     private NativeFunction() {
     }
     /**
      * ECMA 15.3.4.2 Function.prototype.toString ( )
      *
      * @param self self reference
      * @return string representation of Function
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object toString(final Object self) {
         if (!(self instanceof ScriptFunction)) {
             throw typeError("not.a.function", ScriptRuntime.safeToString(self));
         }
         return ((ScriptFunction)self).toSource();
     }
     /**
      * ECMA 15.3.4.3 Function.prototype.apply (thisArg, argArray)
      *
      * @param self   self reference
      * @param thiz   {@code this} arg for apply
      * @param array  array of argument for apply
      * @return result of apply
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object apply(final Object self, final Object thiz, final Object array) {
         if (!(self instanceof ScriptFunction)) {
             throw typeError("not.a.function", ScriptRuntime.safeToString(self));
         }
         Object[] args = null;
         if (array instanceof ScriptObject) {
             // look for array-like object
             final ScriptObject sobj = (ScriptObject)array;
             final Object       len  = sobj.getLength();
             final int n = (int)JSType.toUint32(len);
             args = new Object[n];
             for (int i = 0; i < args.length; i++) {
                 args[i] = sobj.get(i);
             }
         } else if (array instanceof Object[]) {
             args = (Object[])array;
         } else if (array instanceof List) {
             final List<?> list = (List<?>)array;
             list.toArray(args = new Object[list.size()]);
         } else if (array == null || array == UNDEFINED) {
             args = ScriptRuntime.EMPTY_ARRAY;
         } else if (array instanceof ScriptObjectMirror) {
             // look for array-like ScriptObjectMirror object
             final ScriptObjectMirror mirror = (ScriptObjectMirror)array;
             final Object       len  = mirror.containsKey("length")? mirror.getMember("length") : Integer.valueOf(0);
             final int n = (int)JSType.toUint32(len);
             args = new Object[n];
             for (int i = 0; i < args.length; i++) {
                 args[i] = mirror.containsKey(i)? mirror.getSlot(i) : UNDEFINED;
             }
         } else {
             throw typeError("function.apply.expects.array");
         }
         return ScriptRuntime.apply((ScriptFunction)self, thiz, args);
     }
     /**
      * ECMA 15.3.4.4 Function.prototype.call (thisArg [ , arg1 [ , arg2, ... ] ] )
      *
      * @param self self reference
      * @param args arguments for call
      * @return result of call
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static Object call(final Object self, final Object... args) {
         if (!(self instanceof ScriptFunction)) {
             throw typeError("not.a.function", ScriptRuntime.safeToString(self));
         }
         Object thiz = (args.length == 0) ? UNDEFINED : args[0];
         Object[] arguments;
         if (args.length > 1) {
             arguments = new Object[args.length - 1];
             System.arraycopy(args, 1, arguments, 0, arguments.length);
         } else {
             arguments = ScriptRuntime.EMPTY_ARRAY;
         }
         return ScriptRuntime.apply((ScriptFunction)self, thiz, arguments);
     }
     /**
      * ECMA 15.3.4.5 Function.prototype.bind (thisArg [, arg1 [, arg2, ...]])
      *
      * @param self self reference
      * @param args arguments for bind
      * @return function with bound arguments
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static Object bind(final Object self, final Object... args) {
         if (!(self instanceof ScriptFunction)) {
             throw typeError("not.a.function", ScriptRuntime.safeToString(self));
         }
         final Object thiz = (args.length == 0) ? UNDEFINED : args[0];
         Object[] arguments;
         if (args.length > 1) {
             arguments = new Object[args.length - 1];
             System.arraycopy(args, 1, arguments, 0, arguments.length);
         } else {
             arguments = ScriptRuntime.EMPTY_ARRAY;
         }
         return ((ScriptFunctionImpl)self).makeBoundFunction(thiz, arguments);
     }
     /**
      * Nashorn extension: Function.prototype.toSource
      *
      * @param self self reference
      * @return source for function
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object toSource(final Object self) {
         if (!(self instanceof ScriptFunction)) {
             throw typeError("not.a.function", ScriptRuntime.safeToString(self));
         }
         return ((ScriptFunction)self).toSource();
     }
     /**
      * ECMA 15.3.2.1 new Function (p1, p2, ... , pn, body)
      *
      * Constructor
      *
      * @param newObj is the new operator used for constructing this function
      * @param self   self reference
      * @param args   arguments
      * @return new NativeFunction
      */
     @Constructor(arity = 1)
     public static Object function(final boolean newObj, final Object self, final Object... args) {
         final StringBuilder sb = new StringBuilder();
         sb.append("(function (");
         if (args.length > 0) {
             final StringBuilder paramListBuf = new StringBuilder();
             for (int i = 0; i < args.length - 1; i++) {
                 paramListBuf.append(JSType.toString(args[i]));
                 if (i < args.length - 2) {
                     paramListBuf.append(",");
                 }
             }
             final String paramList = paramListBuf.toString();
             if (! paramList.isEmpty()) {
                 checkFunctionParameters(paramList);
                 sb.append(paramList);
             }
         }
         sb.append(") {\n");
         if (args.length > 0) {
             final String funcBody = JSType.toString(args[args.length - 1]);
             checkFunctionBody(funcBody);
             sb.append(funcBody);
             sb.append('\n');
         }
         sb.append("})");
         final Global global = Global.instance();
         return Global.directEval(global, sb.toString(), global, "<function>", global.isStrictContext());
     }
     private static void checkFunctionParameters(final String params) {
         final Source src = new Source("<function>", params);
         final Parser parser = new Parser(Global.getEnv(), src, new Context.ThrowErrorManager());
         try {
             parser.parseFormalParameterList();
         } catch (final ParserException pe) {
             pe.throwAsEcmaException();
         }
     }
     private static void checkFunctionBody(final String funcBody) {
         final Source src = new Source("<function>", funcBody);
         final Parser parser = new Parser(Global.getEnv(), src, new Context.ThrowErrorManager());
         try {
             parser.parseFunctionBody();
         } catch (final ParserException pe) {
             pe.throwAsEcmaException();
         }
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/nashorn/internal/objects/NativeFunction.java@b1980b5f00a1 (annotated)

src/jdk/nashorn/internal/objects/NativeFunction.java