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code / edge / openjdk / refs/heads/jdk8u111-b14 / . / nashorn / src / jdk / nashorn / internal / objects / Global.java
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/*
* 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.lookup.Lookup.MH;
import static jdk.nashorn.internal.runtime.ECMAErrors.referenceError;
import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
import static jdk.nashorn.internal.runtime.JSType.isString;
import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.invoke.SwitchPoint;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import jdk.internal.dynalink.CallSiteDescriptor;
import jdk.internal.dynalink.linker.GuardedInvocation;
import jdk.internal.dynalink.linker.LinkRequest;
import jdk.nashorn.api.scripting.ClassFilter;
import jdk.nashorn.api.scripting.ScriptObjectMirror;
import jdk.nashorn.internal.lookup.Lookup;
import jdk.nashorn.internal.objects.annotations.Attribute;
import jdk.nashorn.internal.objects.annotations.Getter;
import jdk.nashorn.internal.objects.annotations.Property;
import jdk.nashorn.internal.objects.annotations.ScriptClass;
import jdk.nashorn.internal.objects.annotations.Setter;
import jdk.nashorn.internal.runtime.Context;
import jdk.nashorn.internal.runtime.ECMAErrors;
import jdk.nashorn.internal.runtime.FindProperty;
import jdk.nashorn.internal.runtime.GlobalConstants;
import jdk.nashorn.internal.runtime.GlobalFunctions;
import jdk.nashorn.internal.runtime.JSType;
import jdk.nashorn.internal.runtime.NativeJavaPackage;
import jdk.nashorn.internal.runtime.PropertyDescriptor;
import jdk.nashorn.internal.runtime.PropertyMap;
import jdk.nashorn.internal.runtime.Scope;
import jdk.nashorn.internal.runtime.ScriptEnvironment;
import jdk.nashorn.internal.runtime.ScriptFunction;
import jdk.nashorn.internal.runtime.ScriptObject;
import jdk.nashorn.internal.runtime.ScriptRuntime;
import jdk.nashorn.internal.runtime.ScriptingFunctions;
import jdk.nashorn.internal.runtime.Specialization;
import jdk.nashorn.internal.runtime.arrays.ArrayData;
import jdk.nashorn.internal.runtime.linker.Bootstrap;
import jdk.nashorn.internal.runtime.linker.InvokeByName;
import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor;
import jdk.nashorn.internal.runtime.regexp.RegExpResult;
import jdk.nashorn.internal.scripts.JD;
import jdk.nashorn.internal.scripts.JO;
import jdk.nashorn.tools.ShellFunctions;
/**
* Representation of global scope.
*/
@ScriptClass("Global")
public final class Global extends Scope {
// This special value is used to flag a lazily initialized global property.
// This also serves as placeholder value used in place of a location property
// (__FILE__, __DIR__, __LINE__)
private static final Object LAZY_SENTINEL = new Object();
private final InvokeByName TO_STRING = new InvokeByName("toString", ScriptObject.class);
private final InvokeByName VALUE_OF = new InvokeByName("valueOf", ScriptObject.class);
/**
* Optimistic builtin names that require switchpoint invalidation
* upon assignment. Overly conservative, but works for now, to avoid
* any complicated scope checks and especially heavy weight guards
* like
*
* <pre>
* public boolean setterGuard(final Object receiver) {
* final Global global = Global.instance();
* final ScriptObject sobj = global.getFunctionPrototype();
* final Object apply = sobj.get("apply");
* return apply == receiver;
* }
* </pre>
*
* Naturally, checking for builtin classes like NativeFunction is cheaper,
* it's when you start adding property checks for said builtins you have
* problems with guard speed.
*/
/** Nashorn extension: arguments array */
@Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_CONFIGURABLE)
public Object arguments;
/** ECMA 15.1.2.2 parseInt (string , radix) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object parseInt;
/** ECMA 15.1.2.3 parseFloat (string) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object parseFloat;
/** ECMA 15.1.2.4 isNaN (number) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object isNaN;
/** ECMA 15.1.2.5 isFinite (number) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object isFinite;
/** ECMA 15.1.3.3 encodeURI */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object encodeURI;
/** ECMA 15.1.3.4 encodeURIComponent */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object encodeURIComponent;
/** ECMA 15.1.3.1 decodeURI */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object decodeURI;
/** ECMA 15.1.3.2 decodeURIComponent */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object decodeURIComponent;
/** ECMA B.2.1 escape (string) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object escape;
/** ECMA B.2.2 unescape (string) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object unescape;
/** Nashorn extension: global.print */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object print;
/** Nashorn extension: global.load */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object load;
/** Nashorn extension: global.loadWithNewGlobal */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object loadWithNewGlobal;
/** Nashorn extension: global.exit */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object exit;
/** Nashorn extension: global.quit */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object quit;
/** Value property NaN of the Global Object - ECMA 15.1.1.1 NaN */
@Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final double NaN = Double.NaN;
/** Value property Infinity of the Global Object - ECMA 15.1.1.2 Infinity */
@Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final double Infinity = Double.POSITIVE_INFINITY;
/** Value property Undefined of the Global Object - ECMA 15.1.1.3 Undefined */
@Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final Object undefined = UNDEFINED;
/** ECMA 15.1.2.1 eval(x) */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public Object eval;
/** ECMA 15.1.4.1 Object constructor. */
@Property(name = "Object", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object object;
/** ECMA 15.1.4.2 Function constructor. */
@Property(name = "Function", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object function;
/** ECMA 15.1.4.3 Array constructor. */
@Property(name = "Array", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object array;
/** ECMA 15.1.4.4 String constructor */
@Property(name = "String", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object string;
/** ECMA 15.1.4.5 Boolean constructor */
@Property(name = "Boolean", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object _boolean;
/** ECMA 15.1.4.6 - Number constructor */
@Property(name = "Number", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object number;
/**
* Getter for ECMA 15.1.4.7 Date property
*
* @param self self reference
* @return Date property value
*/
@Getter(name = "Date", attributes = Attribute.NOT_ENUMERABLE)
public static Object getDate(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.date == LAZY_SENTINEL) {
global.date = global.getBuiltinDate();
}
return global.date;
}
/**
* Setter for ECMA 15.1.4.7 Date property
*
* @param self self reference
* @param value value for the Date property
*/
@Setter(name = "Date", attributes = Attribute.NOT_ENUMERABLE)
public static void setDate(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.date = value;
}
private volatile Object date = LAZY_SENTINEL;
/**
* Getter for ECMA 15.1.4.8 RegExp property
*
* @param self self reference
* @return RegExp property value
*/
@Getter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE)
public static Object getRegExp(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.regexp == LAZY_SENTINEL) {
global.regexp = global.getBuiltinRegExp();
}
return global.regexp;
}
/**
* Setter for ECMA 15.1.4.8 RegExp property
*
* @param self self reference
* @param value value for the RegExp property
*/
@Setter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE)
public static void setRegExp(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.regexp = value;
}
private volatile Object regexp = LAZY_SENTINEL;
/**
* Getter for ECMA 15.12 - The JSON property
* @param self self reference
* @return the value of JSON property
*/
@Getter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE)
public static Object getJSON(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.json == LAZY_SENTINEL) {
global.json = global.getBuiltinJSON();
}
return global.json;
}
/**
* Setter for ECMA 15.12 - The JSON property
* @param self self reference
* @param value value for the JSON property
*/
@Setter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE)
public static void setJSON(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.json = value;
}
private volatile Object json = LAZY_SENTINEL;
/**
* Getter for Nashorn extension: global.JSAdapter
* @param self self reference
* @return value of the JSAdapter property
*/
@Getter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE)
public static Object getJSAdapter(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.jsadapter == LAZY_SENTINEL) {
global.jsadapter = global.getBuiltinJSAdapter();
}
return global.jsadapter;
}
/**
* Setter for Nashorn extension: global.JSAdapter
* @param self self reference
* @param value value for the JSAdapter property
*/
@Setter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE)
public static void setJSAdapter(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.jsadapter = value;
}
private volatile Object jsadapter = LAZY_SENTINEL;
/** ECMA 15.8 - The Math object */
@Property(name = "Math", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object math;
/** Error object */
@Property(name = "Error", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object error;
/**
* Getter for the EvalError property
* @param self self reference
* @return the value of EvalError property
*/
@Getter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE)
public static Object getEvalError(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.evalError == LAZY_SENTINEL) {
global.evalError = global.getBuiltinEvalError();
}
return global.evalError;
}
/**
* Setter for the EvalError property
* @param self self reference
* @param value value of the EvalError property
*/
@Setter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE)
public static void setEvalError(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.evalError = value;
}
private volatile Object evalError = LAZY_SENTINEL;
/**
* Getter for the RangeError property.
* @param self self reference
* @return the value of RangeError property
*/
@Getter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE)
public static Object getRangeError(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.rangeError == LAZY_SENTINEL) {
global.rangeError = global.getBuiltinRangeError();
}
return global.rangeError;
}
/**
* Setter for the RangeError property.
* @param self self reference
* @param value value for the RangeError property
*/
@Setter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE)
public static void setRangeError(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.rangeError = value;
}
private volatile Object rangeError = LAZY_SENTINEL;
/** ReferenceError object */
@Property(name = "ReferenceError", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object referenceError;
/** SyntaxError object */
@Property(name = "SyntaxError", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object syntaxError;
/** TypeError object */
@Property(name = "TypeError", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object typeError;
/**
* Getter for the URIError property.
* @param self self reference
* @return the value of URIError property
*/
@Getter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE)
public static Object getURIError(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.uriError == LAZY_SENTINEL) {
global.uriError = global.getBuiltinURIError();
}
return global.uriError;
}
/**
* Setter for the URIError property.
* @param self self reference
* @param value value for the URIError property
*/
@Setter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE)
public static void setURIError(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.uriError = value;
}
private volatile Object uriError = LAZY_SENTINEL;
/**
* Getter for the ArrayBuffer property.
* @param self self reference
* @return the value of the ArrayBuffer property
*/
@Getter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE)
public static Object getArrayBuffer(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.arrayBuffer == LAZY_SENTINEL) {
global.arrayBuffer = global.getBuiltinArrayBuffer();
}
return global.arrayBuffer;
}
/**
* Setter for the ArrayBuffer property.
* @param self self reference
* @param value value of the ArrayBuffer property
*/
@Setter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE)
public static void setArrayBuffer(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.arrayBuffer = value;
}
private volatile Object arrayBuffer;
/**
* Getter for the DataView property.
* @param self self reference
* @return the value of the DataView property
*/
@Getter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE)
public static Object getDataView(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.dataView == LAZY_SENTINEL) {
global.dataView = global.getBuiltinDataView();
}
return global.dataView;
}
/**
* Setter for the DataView property.
* @param self self reference
* @param value value of the DataView property
*/
@Setter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE)
public static void setDataView(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.dataView = value;
}
private volatile Object dataView;
/**
* Getter for the Int8Array property.
* @param self self reference
* @return the value of the Int8Array property.
*/
@Getter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getInt8Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.int8Array == LAZY_SENTINEL) {
global.int8Array = global.getBuiltinInt8Array();
}
return global.int8Array;
}
/**
* Setter for the Int8Array property.
* @param self self reference
* @param value value of the Int8Array property
*/
@Setter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setInt8Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.int8Array = value;
}
private volatile Object int8Array;
/**
* Getter for the Uin8Array property.
* @param self self reference
* @return the value of the Uint8Array property
*/
@Getter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getUint8Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.uint8Array == LAZY_SENTINEL) {
global.uint8Array = global.getBuiltinUint8Array();
}
return global.uint8Array;
}
/**
* Setter for the Uin8Array property.
* @param self self reference
* @param value value of the Uin8Array property
*/
@Setter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setUint8Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.uint8Array = value;
}
private volatile Object uint8Array;
/**
* Getter for the Uint8ClampedArray property.
* @param self self reference
* @return the value of the Uint8ClampedArray property
*/
@Getter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE)
public static Object getUint8ClampedArray(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.uint8ClampedArray == LAZY_SENTINEL) {
global.uint8ClampedArray = global.getBuiltinUint8ClampedArray();
}
return global.uint8ClampedArray;
}
/**
* Setter for the Uint8ClampedArray property.
* @param self self reference
* @param value value of the Uint8ClampedArray property
*/
@Setter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE)
public static void setUint8ClampedArray(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.uint8ClampedArray = value;
}
private volatile Object uint8ClampedArray;
/**
* Getter for the Int16Array property.
* @param self self reference
* @return the value of the Int16Array property
*/
@Getter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getInt16Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.int16Array == LAZY_SENTINEL) {
global.int16Array = global.getBuiltinInt16Array();
}
return global.int16Array;
}
/**
* Setter for the Int16Array property.
* @param self self reference
* @param value value of the Int16Array property
*/
@Setter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setInt16Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.int16Array = value;
}
private volatile Object int16Array;
/**
* Getter for the Uint16Array property.
* @param self self reference
* @return the value of the Uint16Array property
*/
@Getter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getUint16Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.uint16Array == LAZY_SENTINEL) {
global.uint16Array = global.getBuiltinUint16Array();
}
return global.uint16Array;
}
/**
* Setter for the Uint16Array property.
* @param self self reference
* @param value value of the Uint16Array property
*/
@Setter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setUint16Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.uint16Array = value;
}
private volatile Object uint16Array;
/**
* Getter for the Int32Array property.
*
* @param self self reference
* @return the value of the Int32Array property
*/
@Getter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getInt32Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.int32Array == LAZY_SENTINEL) {
global.int32Array = global.getBuiltinInt32Array();
}
return global.int32Array;
}
/**
* Setter for the Int32Array property.
*
* @param self self reference
* @param value value of the Int32Array property
*/
@Setter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setInt32Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.int32Array = value;
}
private volatile Object int32Array;
/**
* Getter of the Uint32Array property.
*
* @param self self reference
* @return the value of the Uint32Array property
*/
@Getter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getUint32Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.uint32Array == LAZY_SENTINEL) {
global.uint32Array = global.getBuiltinUint32Array();
}
return global.uint32Array;
}
/**
* Setter of the Uint32Array property.
*
* @param self self reference
* @param value value of the Uint32Array property
*/
@Setter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setUint32Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.uint32Array = value;
}
private volatile Object uint32Array;
/**
* Getter for the Float32Array property.
*
* @param self self reference
* @return the value of the Float32Array property
*/
@Getter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getFloat32Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.float32Array == LAZY_SENTINEL) {
global.float32Array = global.getBuiltinFloat32Array();
}
return global.float32Array;
}
/**
* Setter for the Float32Array property.
*
* @param self self reference
* @param value value of the Float32Array property
*/
@Setter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setFloat32Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.float32Array = value;
}
private volatile Object float32Array;
/**
* Getter for the Float64Array property.
*
* @param self self reference
* @return the value of the Float64Array property
*/
@Getter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE)
public static Object getFloat64Array(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.float64Array == LAZY_SENTINEL) {
global.float64Array = global.getBuiltinFloat64Array();
}
return global.float64Array;
}
/**
* Setter for the Float64Array property.
*
* @param self self reference
* @param value value of the Float64Array property
*/
@Setter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE)
public static void setFloat64Array(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.float64Array = value;
}
private volatile Object float64Array;
/** Nashorn extension: Java access - global.Packages */
@Property(name = "Packages", attributes = Attribute.NOT_ENUMERABLE)
public volatile Object packages;
/** Nashorn extension: Java access - global.com */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object com;
/** Nashorn extension: Java access - global.edu */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object edu;
/** Nashorn extension: Java access - global.java */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object java;
/** Nashorn extension: Java access - global.javafx */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object javafx;
/** Nashorn extension: Java access - global.javax */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object javax;
/** Nashorn extension: Java access - global.org */
@Property(attributes = Attribute.NOT_ENUMERABLE)
public volatile Object org;
/**
* Getter for the Nashorn extension: Java access - global.javaImporter.
*
* @param self self reference
* @return the value of the JavaImporter property
*/
@Getter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE)
public static Object getJavaImporter(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.javaImporter == LAZY_SENTINEL) {
global.javaImporter = global.getBuiltinJavaImporter();
}
return global.javaImporter;
}
/**
* Setter for the Nashorn extension: Java access - global.javaImporter.
*
* @param self self reference
* @param value value of the JavaImporter property
*/
@Setter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE)
public static void setJavaImporter(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.javaImporter = value;
}
private volatile Object javaImporter;
/**
* Getter for the Nashorn extension: global.Java property.
*
* @param self self reference
* @return the value of the Java property
*/
@Getter(name = "Java", attributes = Attribute.NOT_ENUMERABLE)
public static Object getJavaApi(final Object self) {
final Global global = Global.instanceFrom(self);
if (global.javaApi == LAZY_SENTINEL) {
global.javaApi = global.getBuiltinJavaApi();
}
return global.javaApi;
}
/**
* Setter for the Nashorn extension: global.Java property.
*
* @param self self reference
* @param value value of the Java property
*/
@Setter(name = "Java", attributes = Attribute.NOT_ENUMERABLE)
public static void setJavaApi(final Object self, final Object value) {
final Global global = Global.instanceFrom(self);
global.javaApi = value;
}
private volatile Object javaApi;
/** Nashorn extension: current script's file name */
@Property(name = "__FILE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final Object __FILE__ = LAZY_SENTINEL;
/** Nashorn extension: current script's directory */
@Property(name = "__DIR__", attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final Object __DIR__ = LAZY_SENTINEL;
/** Nashorn extension: current source line number being executed */
@Property(name = "__LINE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT)
public static final Object __LINE__ = LAZY_SENTINEL;
private volatile NativeDate DEFAULT_DATE;
/** Used as Date.prototype's default value */
NativeDate getDefaultDate() {
return DEFAULT_DATE;
}
private volatile NativeRegExp DEFAULT_REGEXP;
/** Used as RegExp.prototype's default value */
NativeRegExp getDefaultRegExp() {
return DEFAULT_REGEXP;
}
/*
* Built-in constructor objects: Even if user changes dynamic values of
* "Object", "Array" etc., we still want to keep original values of these
* constructors here. For example, we need to be able to create array,
* regexp literals even after user overwrites global "Array" or "RegExp"
* constructor - see also ECMA 262 spec. Annex D.
*/
private ScriptFunction builtinFunction;
private ScriptFunction builtinObject;
private ScriptFunction builtinArray;
private ScriptFunction builtinBoolean;
private ScriptFunction builtinDate;
private ScriptObject builtinJSON;
private ScriptFunction builtinJSAdapter;
private ScriptObject builtinMath;
private ScriptFunction builtinNumber;
private ScriptFunction builtinRegExp;
private ScriptFunction builtinString;
private ScriptFunction builtinError;
private ScriptFunction builtinEval;
private ScriptFunction builtinEvalError;
private ScriptFunction builtinRangeError;
private ScriptFunction builtinReferenceError;
private ScriptFunction builtinSyntaxError;
private ScriptFunction builtinTypeError;
private ScriptFunction builtinURIError;
private ScriptObject builtinPackages;
private ScriptObject builtinCom;
private ScriptObject builtinEdu;
private ScriptObject builtinJava;
private ScriptObject builtinJavafx;
private ScriptObject builtinJavax;
private ScriptObject builtinOrg;
private ScriptFunction builtinJavaImporter;
private ScriptObject builtinJavaApi;
private ScriptFunction builtinArrayBuffer;
private ScriptFunction builtinDataView;
private ScriptFunction builtinInt8Array;
private ScriptFunction builtinUint8Array;
private ScriptFunction builtinUint8ClampedArray;
private ScriptFunction builtinInt16Array;
private ScriptFunction builtinUint16Array;
private ScriptFunction builtinInt32Array;
private ScriptFunction builtinUint32Array;
private ScriptFunction builtinFloat32Array;
private ScriptFunction builtinFloat64Array;
/*
* ECMA section 13.2.3 The [[ThrowTypeError]] Function Object
*/
private ScriptFunction typeErrorThrower;
// Used to store the last RegExp result to support deprecated RegExp constructor properties
private RegExpResult lastRegExpResult;
private static final MethodHandle EVAL = findOwnMH_S("eval", Object.class, Object.class, Object.class);
private static final MethodHandle NO_SUCH_PROPERTY = findOwnMH_S(NO_SUCH_PROPERTY_NAME, Object.class, Object.class, Object.class);
private static final MethodHandle PRINT = findOwnMH_S("print", Object.class, Object.class, Object[].class);
private static final MethodHandle PRINTLN = findOwnMH_S("println", Object.class, Object.class, Object[].class);
private static final MethodHandle LOAD = findOwnMH_S("load", Object.class, Object.class, Object.class);
private static final MethodHandle LOAD_WITH_NEW_GLOBAL = findOwnMH_S("loadWithNewGlobal", Object.class, Object.class, Object[].class);
private static final MethodHandle EXIT = findOwnMH_S("exit", Object.class, Object.class, Object.class);
private static final MethodHandle LEXICAL_SCOPE_FILTER = findOwnMH_S("lexicalScopeFilter", Object.class, Object.class);
// initialized by nasgen
private static PropertyMap $nasgenmap$;
// context to which this global belongs to
private final Context context;
// current ScriptContext to use - can be null.
private ThreadLocal<ScriptContext> scontext;
// current ScriptEngine associated - can be null.
private ScriptEngine engine;
// ES6 global lexical scope.
private final LexicalScope lexicalScope;
// Switchpoint for non-constant global callsites in the presence of ES6 lexical scope.
private SwitchPoint lexicalScopeSwitchPoint;
/**
* Set the current script context
* @param ctxt script context
*/
public void setScriptContext(final ScriptContext ctxt) {
assert scontext != null;
scontext.set(ctxt);
}
/**
* Get the current script context
* @return current script context
*/
public ScriptContext getScriptContext() {
assert scontext != null;
return scontext.get();
}
private ScriptContext currentContext() {
final ScriptContext sc = scontext != null? scontext.get() : null;
return (sc != null)? sc : (engine != null? engine.getContext() : null);
}
@Override
protected Context getContext() {
return context;
}
@Override
protected boolean useDualFields() {
return context.useDualFields();
}
// performs initialization checks for Global constructor and returns the
// PropertyMap, if everything is fine.
private static PropertyMap checkAndGetMap(final Context context) {
// security check first
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new RuntimePermission(Context.NASHORN_CREATE_GLOBAL));
}
Objects.requireNonNull(context);
return $nasgenmap$;
}
/**
* Constructor
*
* @param context the context
*/
public Global(final Context context) {
super(checkAndGetMap(context));
this.context = context;
this.lexicalScope = context.getEnv()._es6 ? new LexicalScope(this) : null;
}
/**
* Script access to "current" Global instance
*
* @return the global singleton
*/
public static Global instance() {
return Objects.requireNonNull(Context.getGlobal());
}
private static Global instanceFrom(final Object self) {
return self instanceof Global? (Global)self : instance();
}
/**
* Check if we have a Global instance
* @return true if one exists
*/
public static boolean hasInstance() {
return Context.getGlobal() != null;
}
/**
* Script access to {@link ScriptEnvironment}
*
* @return the script environment
*/
static ScriptEnvironment getEnv() {
return instance().getContext().getEnv();
}
/**
* Script access to {@link Context}
*
* @return the context
*/
static Context getThisContext() {
return instance().getContext();
}
// Runtime interface to Global
/**
* Is there a class filter in the current Context?
* @return class filter
*/
public ClassFilter getClassFilter() {
return context.getClassFilter();
}
/**
* Is this global of the given Context?
* @param ctxt the context
* @return true if this global belongs to the given Context
*/
public boolean isOfContext(final Context ctxt) {
return this.context == ctxt;
}
/**
* Does this global belong to a strict Context?
* @return true if this global belongs to a strict Context
*/
public boolean isStrictContext() {
return context.getEnv()._strict;
}
/**
* Initialize standard builtin objects like "Object", "Array", "Function" etc.
* as well as our extension builtin objects like "Java", "JSAdapter" as properties
* of the global scope object.
*
* @param eng ScriptEngine to initialize
*/
public void initBuiltinObjects(final ScriptEngine eng) {
if (this.builtinObject != null) {
// already initialized, just return
return;
}
this.engine = eng;
if (this.engine != null) {
this.scontext = new ThreadLocal<>();
}
init(eng);
}
/**
* Wrap a Java object as corresponding script object
*
* @param obj object to wrap
* @return wrapped object
*/
public Object wrapAsObject(final Object obj) {
if (obj instanceof Boolean) {
return new NativeBoolean((Boolean)obj, this);
} else if (obj instanceof Number) {
return new NativeNumber(((Number)obj).doubleValue(), this);
} else if (isString(obj)) {
return new NativeString((CharSequence)obj, this);
} else if (obj instanceof Object[]) { // extension
return new NativeArray(ArrayData.allocate((Object[])obj), this);
} else if (obj instanceof double[]) { // extension
return new NativeArray(ArrayData.allocate((double[])obj), this);
} else if (obj instanceof int[]) {
return new NativeArray(ArrayData.allocate((int[]) obj), this);
} else if (obj instanceof ArrayData) {
return new NativeArray((ArrayData) obj, this);
} else {
// FIXME: more special cases? Map? List?
return obj;
}
}
/**
* Lookup helper for JS primitive types
*
* @param request the link request for the dynamic call site.
* @param self self reference
*
* @return guarded invocation
*/
public static GuardedInvocation primitiveLookup(final LinkRequest request, final Object self) {
if (isString(self)) {
return NativeString.lookupPrimitive(request, self);
} else if (self instanceof Number) {
return NativeNumber.lookupPrimitive(request, self);
} else if (self instanceof Boolean) {
return NativeBoolean.lookupPrimitive(request, self);
}
throw new IllegalArgumentException("Unsupported primitive: " + self);
}
/**
* Returns a method handle that creates a wrapper object for a JS primitive value.
*
* @param self receiver object
* @return method handle to create wrapper objects for primitive receiver
*/
public static MethodHandle getPrimitiveWrapFilter(final Object self) {
if (isString(self)) {
return NativeString.WRAPFILTER;
} else if (self instanceof Number) {
return NativeNumber.WRAPFILTER;
} else if (self instanceof Boolean) {
return NativeBoolean.WRAPFILTER;
}
throw new IllegalArgumentException("Unsupported primitive: " + self);
}
/**
* Create a new empty script object
*
* @return the new ScriptObject
*/
public ScriptObject newObject() {
return useDualFields() ? new JD(getObjectPrototype()) : new JO(getObjectPrototype());
}
/**
* Default value of given type
*
* @param sobj script object
* @param typeHint type hint
*
* @return default value
*/
public Object getDefaultValue(final ScriptObject sobj, final Class<?> typeHint) {
// When the [[DefaultValue]] internal method of O is called with no hint,
// then it behaves as if the hint were Number, unless O is a Date object
// in which case it behaves as if the hint were String.
Class<?> hint = typeHint;
if (hint == null) {
hint = Number.class;
}
try {
if (hint == String.class) {
final Object toString = TO_STRING.getGetter().invokeExact(sobj);
if (Bootstrap.isCallable(toString)) {
final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj);
if (JSType.isPrimitive(value)) {
return value;
}
}
final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj);
if (Bootstrap.isCallable(valueOf)) {
final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj);
if (JSType.isPrimitive(value)) {
return value;
}
}
throw typeError(this, "cannot.get.default.string");
}
if (hint == Number.class) {
final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj);
if (Bootstrap.isCallable(valueOf)) {
final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj);
if (JSType.isPrimitive(value)) {
return value;
}
}
final Object toString = TO_STRING.getGetter().invokeExact(sobj);
if (Bootstrap.isCallable(toString)) {
final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj);
if (JSType.isPrimitive(value)) {
return value;
}
}
throw typeError(this, "cannot.get.default.number");
}
} catch (final RuntimeException | Error e) {
throw e;
} catch (final Throwable t) {
throw new RuntimeException(t);
}
return UNDEFINED;
}
/**
* Is the given ScriptObject an ECMAScript Error object?
*
* @param sobj the object being checked
* @return true if sobj is an Error object
*/
public boolean isError(final ScriptObject sobj) {
final ScriptObject errorProto = getErrorPrototype();
ScriptObject proto = sobj.getProto();
while (proto != null) {
if (proto == errorProto) {
return true;
}
proto = proto.getProto();
}
return false;
}
/**
* Create a new ECMAScript Error object.
*
* @param msg error message
* @return newly created Error object
*/
public ScriptObject newError(final String msg) {
return new NativeError(msg, this);
}
/**
* Create a new ECMAScript EvalError object.
*
* @param msg error message
* @return newly created EvalError object
*/
public ScriptObject newEvalError(final String msg) {
return new NativeEvalError(msg, this);
}
/**
* Create a new ECMAScript RangeError object.
*
* @param msg error message
* @return newly created RangeError object
*/
public ScriptObject newRangeError(final String msg) {
return new NativeRangeError(msg, this);
}
/**
* Create a new ECMAScript ReferenceError object.
*
* @param msg error message
* @return newly created ReferenceError object
*/
public ScriptObject newReferenceError(final String msg) {
return new NativeReferenceError(msg, this);
}
/**
* Create a new ECMAScript SyntaxError object.
*
* @param msg error message
* @return newly created SyntaxError object
*/
public ScriptObject newSyntaxError(final String msg) {
return new NativeSyntaxError(msg, this);
}
/**
* Create a new ECMAScript TypeError object.
*
* @param msg error message
* @return newly created TypeError object
*/
public ScriptObject newTypeError(final String msg) {
return new NativeTypeError(msg, this);
}
/**
* Create a new ECMAScript URIError object.
*
* @param msg error message
* @return newly created URIError object
*/
public ScriptObject newURIError(final String msg) {
return new NativeURIError(msg, this);
}
/**
* Create a new ECMAScript GenericDescriptor object.
*
* @param configurable is the property configurable?
* @param enumerable is the property enumerable?
* @return newly created GenericDescriptor object
*/
public PropertyDescriptor newGenericDescriptor(final boolean configurable, final boolean enumerable) {
return new GenericPropertyDescriptor(configurable, enumerable, this);
}
/**
* Create a new ECMAScript DatePropertyDescriptor object.
*
* @param value of the data property
* @param configurable is the property configurable?
* @param enumerable is the property enumerable?
* @param writable is the property writable?
* @return newly created DataPropertyDescriptor object
*/
public PropertyDescriptor newDataDescriptor(final Object value, final boolean configurable, final boolean enumerable, final boolean writable) {
return new DataPropertyDescriptor(configurable, enumerable, writable, value, this);
}
/**
* Create a new ECMAScript AccessorPropertyDescriptor object.
*
* @param get getter function of the user accessor property
* @param set setter function of the user accessor property
* @param configurable is the property configurable?
* @param enumerable is the property enumerable?
* @return newly created AccessorPropertyDescriptor object
*/
public PropertyDescriptor newAccessorDescriptor(final Object get, final Object set, final boolean configurable, final boolean enumerable) {
final AccessorPropertyDescriptor desc = new AccessorPropertyDescriptor(configurable, enumerable, get == null ? UNDEFINED : get, set == null ? UNDEFINED : set, this);
if (get == null) {
desc.delete(PropertyDescriptor.GET, false);
}
if (set == null) {
desc.delete(PropertyDescriptor.SET, false);
}
return desc;
}
private static <T> T getLazilyCreatedValue(final Object key, final Callable<T> creator, final Map<Object, T> map) {
final T obj = map.get(key);
if (obj != null) {
return obj;
}
try {
final T newObj = creator.call();
final T existingObj = map.putIfAbsent(key, newObj);
return existingObj != null ? existingObj : newObj;
} catch (final Exception exp) {
throw new RuntimeException(exp);
}
}
private final Map<Object, InvokeByName> namedInvokers = new ConcurrentHashMap<>();
/**
* Get cached InvokeByName object for the given key
* @param key key to be associated with InvokeByName object
* @param creator if InvokeByName is absent 'creator' is called to make one (lazy init)
* @return InvokeByName object associated with the key.
*/
public InvokeByName getInvokeByName(final Object key, final Callable<InvokeByName> creator) {
return getLazilyCreatedValue(key, creator, namedInvokers);
}
private final Map<Object, MethodHandle> dynamicInvokers = new ConcurrentHashMap<>();
/**
* Get cached dynamic method handle for the given key
* @param key key to be associated with dynamic method handle
* @param creator if method handle is absent 'creator' is called to make one (lazy init)
* @return dynamic method handle associated with the key.
*/
public MethodHandle getDynamicInvoker(final Object key, final Callable<MethodHandle> creator) {
return getLazilyCreatedValue(key, creator, dynamicInvokers);
}
/**
* Hook to search missing variables in ScriptContext if available
* @param self used to detect if scope call or not (this function is 'strict')
* @param name name of the variable missing
* @return value of the missing variable or undefined (or TypeError for scope search)
*/
public static Object __noSuchProperty__(final Object self, final Object name) {
final Global global = Global.instance();
final ScriptContext sctxt = global.currentContext();
final String nameStr = name.toString();
if (sctxt != null) {
final int scope = sctxt.getAttributesScope(nameStr);
if (scope != -1) {
return ScriptObjectMirror.unwrap(sctxt.getAttribute(nameStr, scope), global);
}
}
switch (nameStr) {
case "context":
return sctxt;
case "engine":
return global.engine;
default:
break;
}
if (self == UNDEFINED) {
// scope access and so throw ReferenceError
throw referenceError(global, "not.defined", nameStr);
}
return UNDEFINED;
}
/**
* This is the eval used when 'indirect' eval call is made.
*
* var global = this;
* global.eval("print('hello')");
*
* @param self eval scope
* @param str eval string
*
* @return the result of eval
*/
public static Object eval(final Object self, final Object str) {
return directEval(self, str, Global.instanceFrom(self), UNDEFINED, false);
}
/**
* Direct eval
*
* @param self The scope of eval passed as 'self'
* @param str Evaluated code
* @param callThis "this" to be passed to the evaluated code
* @param location location of the eval call
* @param strict is eval called from a strict mode code?
*
* @return the return value of the eval
*
* This is directly invoked from generated when eval(code) is called in user code
*/
public static Object directEval(final Object self, final Object str, final Object callThis, final Object location, final boolean strict) {
if (!isString(str)) {
return str;
}
final Global global = Global.instanceFrom(self);
final ScriptObject scope = self instanceof ScriptObject && ((ScriptObject)self).isScope() ? (ScriptObject)self : global;
return global.getContext().eval(scope, str.toString(), callThis, location, strict, true);
}
/**
* Global print implementation - Nashorn extension
*
* @param self scope
* @param objects arguments to print
*
* @return result of print (undefined)
*/
public static Object print(final Object self, final Object... objects) {
return Global.instanceFrom(self).printImpl(false, objects);
}
/**
* Global println implementation - Nashorn extension
*
* @param self scope
* @param objects arguments to print
*
* @return result of println (undefined)
*/
public static Object println(final Object self, final Object... objects) {
return Global.instanceFrom(self).printImpl(true, objects);
}
/**
* Global load implementation - Nashorn extension.
*
* <p>
* load builtin loads the given script. Script source can be a URL or a File
* or a script object with name and script properties. Evaluated code gets
* global object "this" and uses global object as scope for evaluation.
* </p>
* <p>
* If self is undefined or null or global, then global object is used
* as scope as well as "this" for the evaluated code. If self is any other
* object, then it is indirect load call. With indirect load call, the
* properties of scope are available to evaluated script as variables. Also,
* global scope properties are accessible. Any var, function definition in
* evaluated script goes into an object that is not accessible to user scripts.
* </p>
* Thus the indirect load call is equivalent to the following:
* <pre>
* <code>
* (function (scope, source) {
* with(scope) {
* eval(&lt;script_from_source&gt;);
* }
* })(self, source);
* </code>
* </pre>
*
* @param self scope to use for the script evaluation
* @param source script source
*
* @return result of load (may be undefined)
*
* @throws IOException if source could not be read
*/
public static Object load(final Object self, final Object source) throws IOException {
final Global global = Global.instanceFrom(self);
return global.getContext().load(self, source);
}
/**
* Global loadWithNewGlobal implementation - Nashorn extension.
*
* loadWithNewGlobal builtin loads the given script from a URL or a File
* or a script object with name and script properties. Evaluated code gets
* new global object "this" and uses that new global object as scope for evaluation.
*
* @param self self This value is ignored by this function
* @param args optional arguments to be passed to the loaded script
*
* @return result of load (may be undefined)
*
* @throws IOException if source could not be read
*/
public static Object loadWithNewGlobal(final Object self, final Object...args) throws IOException {
final Global global = Global.instanceFrom(self);
final int length = args.length;
final boolean hasArgs = 0 < length;
final Object from = hasArgs ? args[0] : UNDEFINED;
final Object[] arguments = hasArgs ? Arrays.copyOfRange(args, 1, length) : args;
return global.getContext().loadWithNewGlobal(from, arguments);
}
/**
* Global exit and quit implementation - Nashorn extension: perform a {@code System.exit} call from the script
*
* @param self self reference
* @param code exit code
*
* @return undefined (will never be reached)
*/
public static Object exit(final Object self, final Object code) {
System.exit(JSType.toInt32(code));
return UNDEFINED;
}
// builtin prototype accessors
/**
* Get the builtin Object prototype.
* @return the object prototype.
*/
public ScriptObject getObjectPrototype() {
return ScriptFunction.getPrototype(builtinObject);
}
/**
* Get the builtin Function prototype.
* @return the Function.prototype.
*/
public ScriptObject getFunctionPrototype() {
return ScriptFunction.getPrototype(builtinFunction);
}
ScriptObject getArrayPrototype() {
return ScriptFunction.getPrototype(builtinArray);
}
ScriptObject getBooleanPrototype() {
return ScriptFunction.getPrototype(builtinBoolean);
}
ScriptObject getNumberPrototype() {
return ScriptFunction.getPrototype(builtinNumber);
}
ScriptObject getDatePrototype() {
return ScriptFunction.getPrototype(getBuiltinDate());
}
ScriptObject getRegExpPrototype() {
return ScriptFunction.getPrototype(getBuiltinRegExp());
}
ScriptObject getStringPrototype() {
return ScriptFunction.getPrototype(builtinString);
}
ScriptObject getErrorPrototype() {
return ScriptFunction.getPrototype(builtinError);
}
ScriptObject getEvalErrorPrototype() {
return ScriptFunction.getPrototype(getBuiltinEvalError());
}
ScriptObject getRangeErrorPrototype() {
return ScriptFunction.getPrototype(getBuiltinRangeError());
}
ScriptObject getReferenceErrorPrototype() {
return ScriptFunction.getPrototype(builtinReferenceError);
}
ScriptObject getSyntaxErrorPrototype() {
return ScriptFunction.getPrototype(builtinSyntaxError);
}
ScriptObject getTypeErrorPrototype() {
return ScriptFunction.getPrototype(builtinTypeError);
}
ScriptObject getURIErrorPrototype() {
return ScriptFunction.getPrototype(getBuiltinURIError());
}
ScriptObject getJavaImporterPrototype() {
return ScriptFunction.getPrototype(getBuiltinJavaImporter());
}
ScriptObject getJSAdapterPrototype() {
return ScriptFunction.getPrototype(getBuiltinJSAdapter());
}
private synchronized ScriptFunction getBuiltinArrayBuffer() {
if (this.builtinArrayBuffer == null) {
this.builtinArrayBuffer = initConstructorAndSwitchPoint("ArrayBuffer", ScriptFunction.class);
}
return this.builtinArrayBuffer;
}
ScriptObject getArrayBufferPrototype() {
return ScriptFunction.getPrototype(getBuiltinArrayBuffer());
}
private synchronized ScriptFunction getBuiltinDataView() {
if (this.builtinDataView == null) {
this.builtinDataView = initConstructorAndSwitchPoint("DataView", ScriptFunction.class);
}
return this.builtinDataView;
}
ScriptObject getDataViewPrototype() {
return ScriptFunction.getPrototype(getBuiltinDataView());
}
private synchronized ScriptFunction getBuiltinInt8Array() {
if (this.builtinInt8Array == null) {
this.builtinInt8Array = initConstructorAndSwitchPoint("Int8Array", ScriptFunction.class);
}
return this.builtinInt8Array;
}
ScriptObject getInt8ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinInt8Array());
}
private synchronized ScriptFunction getBuiltinUint8Array() {
if (this.builtinUint8Array == null) {
this.builtinUint8Array = initConstructorAndSwitchPoint("Uint8Array", ScriptFunction.class);
}
return this.builtinUint8Array;
}
ScriptObject getUint8ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinUint8Array());
}
private synchronized ScriptFunction getBuiltinUint8ClampedArray() {
if (this.builtinUint8ClampedArray == null) {
this.builtinUint8ClampedArray = initConstructorAndSwitchPoint("Uint8ClampedArray", ScriptFunction.class);
}
return this.builtinUint8ClampedArray;
}
ScriptObject getUint8ClampedArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinUint8ClampedArray());
}
private synchronized ScriptFunction getBuiltinInt16Array() {
if (this.builtinInt16Array == null) {
this.builtinInt16Array = initConstructorAndSwitchPoint("Int16Array", ScriptFunction.class);
}
return this.builtinInt16Array;
}
ScriptObject getInt16ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinInt16Array());
}
private synchronized ScriptFunction getBuiltinUint16Array() {
if (this.builtinUint16Array == null) {
this.builtinUint16Array = initConstructorAndSwitchPoint("Uint16Array", ScriptFunction.class);
}
return this.builtinUint16Array;
}
ScriptObject getUint16ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinUint16Array());
}
private synchronized ScriptFunction getBuiltinInt32Array() {
if (this.builtinInt32Array == null) {
this.builtinInt32Array = initConstructorAndSwitchPoint("Int32Array", ScriptFunction.class);
}
return this.builtinInt32Array;
}
ScriptObject getInt32ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinInt32Array());
}
private synchronized ScriptFunction getBuiltinUint32Array() {
if (this.builtinUint32Array == null) {
this.builtinUint32Array = initConstructorAndSwitchPoint("Uint32Array", ScriptFunction.class);
}
return this.builtinUint32Array;
}
ScriptObject getUint32ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinUint32Array());
}
private synchronized ScriptFunction getBuiltinFloat32Array() {
if (this.builtinFloat32Array == null) {
this.builtinFloat32Array = initConstructorAndSwitchPoint("Float32Array", ScriptFunction.class);
}
return this.builtinFloat32Array;
}
ScriptObject getFloat32ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinFloat32Array());
}
private synchronized ScriptFunction getBuiltinFloat64Array() {
if (this.builtinFloat64Array == null) {
this.builtinFloat64Array = initConstructorAndSwitchPoint("Float64Array", ScriptFunction.class);
}
return this.builtinFloat64Array;
}
ScriptObject getFloat64ArrayPrototype() {
return ScriptFunction.getPrototype(getBuiltinFloat64Array());
}
/**
* Return the function that throws TypeError unconditionally. Used as "poison" methods for certain Function properties.
*
* @return the TypeError throwing function
*/
public ScriptFunction getTypeErrorThrower() {
return typeErrorThrower;
}
private synchronized ScriptFunction getBuiltinDate() {
if (this.builtinDate == null) {
this.builtinDate = initConstructorAndSwitchPoint("Date", ScriptFunction.class);
final ScriptObject dateProto = ScriptFunction.getPrototype(builtinDate);
// initialize default date
this.DEFAULT_DATE = new NativeDate(NaN, dateProto);
}
return this.builtinDate;
}
private synchronized ScriptFunction getBuiltinEvalError() {
if (this.builtinEvalError == null) {
this.builtinEvalError = initErrorSubtype("EvalError", getErrorPrototype());
}
return this.builtinEvalError;
}
private ScriptFunction getBuiltinFunction() {
return builtinFunction;
}
/**
* Get the switchpoint used to check property changes for Function.prototype.apply
* @return the switchpoint guarding apply (same as guarding call, and everything else in function)
*/
public static SwitchPoint getBuiltinFunctionApplySwitchPoint() {
return ScriptFunction.getPrototype(Global.instance().getBuiltinFunction()).getProperty("apply").getBuiltinSwitchPoint();
}
private static boolean isBuiltinFunctionProperty(final String name) {
final Global instance = Global.instance();
final ScriptFunction builtinFunction = instance.getBuiltinFunction();
if (builtinFunction == null) {
return false; //conservative for compile-only mode
}
final boolean isBuiltinFunction = instance.function == builtinFunction;
return isBuiltinFunction && ScriptFunction.getPrototype(builtinFunction).getProperty(name).isBuiltin();
}
/**
* Check if the Function.prototype.apply has not been replaced
* @return true if Function.prototype.apply has been replaced
*/
public static boolean isBuiltinFunctionPrototypeApply() {
return isBuiltinFunctionProperty("apply");
}
/**
* Check if the Function.prototype.apply has not been replaced
* @return true if Function.prototype.call has been replaced
*/
public static boolean isBuiltinFunctionPrototypeCall() {
return isBuiltinFunctionProperty("call");
}
private synchronized ScriptFunction getBuiltinJSAdapter() {
if (this.builtinJSAdapter == null) {
this.builtinJSAdapter = initConstructorAndSwitchPoint("JSAdapter", ScriptFunction.class);
}
return builtinJSAdapter;
}
private synchronized ScriptObject getBuiltinJSON() {
if (this.builtinJSON == null) {
this.builtinJSON = initConstructorAndSwitchPoint("JSON", ScriptObject.class);
}
return this.builtinJSON;
}
private synchronized ScriptFunction getBuiltinJavaImporter() {
if (this.builtinJavaImporter == null) {
this.builtinJavaImporter = initConstructor("JavaImporter", ScriptFunction.class);
}
return this.builtinJavaImporter;
}
private synchronized ScriptObject getBuiltinJavaApi() {
if (this.builtinJavaApi == null) {
this.builtinJavaApi = initConstructor("Java", ScriptObject.class);
}
return this.builtinJavaApi;
}
private synchronized ScriptFunction getBuiltinRangeError() {
if (this.builtinRangeError == null) {
this.builtinRangeError = initErrorSubtype("RangeError", getErrorPrototype());
}
return builtinRangeError;
}
private synchronized ScriptFunction getBuiltinRegExp() {
if (this.builtinRegExp == null) {
this.builtinRegExp = initConstructorAndSwitchPoint("RegExp", ScriptFunction.class);
final ScriptObject regExpProto = ScriptFunction.getPrototype(builtinRegExp);
// initialize default regexp object
this.DEFAULT_REGEXP = new NativeRegExp("(?:)", "", this, regExpProto);
// RegExp.prototype should behave like a RegExp object. So copy the
// properties.
regExpProto.addBoundProperties(DEFAULT_REGEXP);
}
return builtinRegExp;
}
private synchronized ScriptFunction getBuiltinURIError() {
if (this.builtinURIError == null) {
this.builtinURIError = initErrorSubtype("URIError", getErrorPrototype());
}
return this.builtinURIError;
}
@Override
public String getClassName() {
return "global";
}
/**
* Copy function used to clone NativeRegExp objects.
*
* @param regexp a NativeRegExp to clone
*
* @return copy of the given regexp object
*/
public static Object regExpCopy(final Object regexp) {
return new NativeRegExp((NativeRegExp)regexp);
}
/**
* Convert given object to NativeRegExp type.
*
* @param obj object to be converted
* @return NativeRegExp instance
*/
public static NativeRegExp toRegExp(final Object obj) {
if (obj instanceof NativeRegExp) {
return (NativeRegExp)obj;
}
return new NativeRegExp(JSType.toString(obj));
}
/**
* ECMA 9.9 ToObject implementation
*
* @param obj an item for which to run ToObject
* @return ToObject version of given item
*/
public static Object toObject(final Object obj) {
if (obj == null || obj == UNDEFINED) {
throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
}
if (obj instanceof ScriptObject) {
return obj;
}
return instance().wrapAsObject(obj);
}
/**
* Allocate a new object array.
*
* @param initial object values.
* @return the new array
*/
public static NativeArray allocate(final Object[] initial) {
ArrayData arrayData = ArrayData.allocate(initial);
for (int index = 0; index < initial.length; index++) {
final Object value = initial[index];
if (value == ScriptRuntime.EMPTY) {
arrayData = arrayData.delete(index);
}
}
return new NativeArray(arrayData);
}
/**
* Allocate a new number array.
*
* @param initial number values.
* @return the new array
*/
public static NativeArray allocate(final double[] initial) {
return new NativeArray(ArrayData.allocate(initial));
}
/**
* Allocate a new integer array.
*
* @param initial number values.
* @return the new array
*/
public static NativeArray allocate(final int[] initial) {
return new NativeArray(ArrayData.allocate(initial));
}
/**
* Allocate a new object array for arguments.
*
* @param arguments initial arguments passed.
* @param callee reference to the function that uses arguments object
* @param numParams actual number of declared parameters
*
* @return the new array
*/
public static ScriptObject allocateArguments(final Object[] arguments, final Object callee, final int numParams) {
return NativeArguments.allocate(arguments, (ScriptFunction)callee, numParams);
}
/**
* Called from generated to check if given function is the builtin 'eval'. If
* eval is used in a script, a lot of optimizations and assumptions cannot be done.
*
* @param fn function object that is checked
* @return true if fn is the builtin eval
*/
public static boolean isEval(final Object fn) {
return fn == Global.instance().builtinEval;
}
/**
* Called from generated to replace a location property placeholder with the actual location property value.
*
* @param placeholder the value tested for being a placeholder for a location property
* @param locationProperty the actual value for the location property
* @return locationProperty if placeholder is indeed a placeholder for a location property, the placeholder otherwise
*/
public static Object replaceLocationPropertyPlaceholder(final Object placeholder, final Object locationProperty) {
return isLocationPropertyPlaceholder(placeholder) ? locationProperty : placeholder;
}
/**
* Called from runtime internals to check if the passed value is a location property placeholder.
* @param placeholder the value tested for being a placeholder for a location property
* @return true if the value is a placeholder, false otherwise.
*/
public static boolean isLocationPropertyPlaceholder(final Object placeholder) {
return placeholder == LAZY_SENTINEL;
}
/**
* Create a new RegExp object.
*
* @param expression Regular expression.
* @param options Search options.
*
* @return New RegExp object.
*/
public static Object newRegExp(final String expression, final String options) {
if (options == null) {
return new NativeRegExp(expression);
}
return new NativeRegExp(expression, options);
}
/**
* Get the object prototype
*
* @return the object prototype
*/
public static ScriptObject objectPrototype() {
return Global.instance().getObjectPrototype();
}
/**
* Create a new empty object instance.
*
* @return New empty object.
*/
public static ScriptObject newEmptyInstance() {
return Global.instance().newObject();
}
/**
* Check if a given object is a ScriptObject, raises an exception if this is
* not the case
*
* @param obj and object to check
* @return the script object
*/
public static ScriptObject checkObject(final Object obj) {
if (!(obj instanceof ScriptObject)) {
throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
}
return (ScriptObject)obj;
}
/**
* ECMA 9.10 - implementation of CheckObjectCoercible, i.e. raise an exception
* if this object is null or undefined.
*
* @param obj an object to check
*/
public static void checkObjectCoercible(final Object obj) {
if (obj == null || obj == UNDEFINED) {
throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
}
}
/**
* Return the ES6 global scope for lexically declared bindings.
* @return the ES6 lexical global scope.
*/
public final ScriptObject getLexicalScope() {
assert context.getEnv()._es6;
return lexicalScope;
}
@Override
public void addBoundProperties(final ScriptObject source, final jdk.nashorn.internal.runtime.Property[] properties) {
PropertyMap ownMap = getMap();
LexicalScope lexScope = null;
PropertyMap lexicalMap = null;
boolean hasLexicalDefinitions = false;
if (context.getEnv()._es6) {
lexScope = (LexicalScope) getLexicalScope();
lexicalMap = lexScope.getMap();
for (final jdk.nashorn.internal.runtime.Property property : properties) {
if (property.isLexicalBinding()) {
hasLexicalDefinitions = true;
}
// ES6 15.1.8 steps 6. and 7.
final jdk.nashorn.internal.runtime.Property globalProperty = ownMap.findProperty(property.getKey());
if (globalProperty != null && !globalProperty.isConfigurable() && property.isLexicalBinding()) {
throw ECMAErrors.syntaxError("redeclare.variable", property.getKey());
}
final jdk.nashorn.internal.runtime.Property lexicalProperty = lexicalMap.findProperty(property.getKey());
if (lexicalProperty != null && !property.isConfigurable()) {
throw ECMAErrors.syntaxError("redeclare.variable", property.getKey());
}
}
}
final boolean extensible = isExtensible();
for (final jdk.nashorn.internal.runtime.Property property : properties) {
if (property.isLexicalBinding()) {
assert lexScope != null;
lexicalMap = lexScope.addBoundProperty(lexicalMap, source, property, true);
if (ownMap.findProperty(property.getKey()) != null) {
// If property exists in the global object invalidate any global constant call sites.
invalidateGlobalConstant(property.getKey());
}
} else {
ownMap = addBoundProperty(ownMap, source, property, extensible);
}
}
setMap(ownMap);
if (hasLexicalDefinitions) {
assert lexScope != null;
lexScope.setMap(lexicalMap);
invalidateLexicalSwitchPoint();
}
}
@Override
public GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
final boolean isScope = NashornCallSiteDescriptor.isScope(desc);
if (lexicalScope != null && isScope && !NashornCallSiteDescriptor.isApplyToCall(desc)) {
if (lexicalScope.hasOwnProperty(name)) {
return lexicalScope.findGetMethod(desc, request, operator);
}
}
final GuardedInvocation invocation = super.findGetMethod(desc, request, operator);
// We want to avoid adding our generic lexical scope switchpoint to global constant invocations,
// because those are invalidated per-key in the addBoundProperties method above.
// We therefore check if the invocation does already have a switchpoint and the property is non-inherited,
// assuming this only applies to global constants. If other non-inherited properties will
// start using switchpoints some time in the future we'll have to revisit this.
if (isScope && context.getEnv()._es6 && (invocation.getSwitchPoints() == null || !hasOwnProperty(name))) {
return invocation.addSwitchPoint(getLexicalScopeSwitchPoint());
}
return invocation;
}
@Override
protected FindProperty findProperty(final String key, final boolean deep, final ScriptObject start) {
if (lexicalScope != null && start != this && start.isScope()) {
final FindProperty find = lexicalScope.findProperty(key, false);
if (find != null) {
return find;
}
}
return super.findProperty(key, deep, start);
}
@Override
public GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) {
final boolean isScope = NashornCallSiteDescriptor.isScope(desc);
if (lexicalScope != null && isScope) {
final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
if (lexicalScope.hasOwnProperty(name)) {
return lexicalScope.findSetMethod(desc, request);
}
}
final GuardedInvocation invocation = super.findSetMethod(desc, request);
if (isScope && context.getEnv()._es6) {
return invocation.addSwitchPoint(getLexicalScopeSwitchPoint());
}
return invocation;
}
/**
* Adds jjs shell interactive mode builtin functions to global scope.
*/
public void addShellBuiltins() {
Object value = ScriptFunction.createBuiltin("input", ShellFunctions.INPUT);
addOwnProperty("input", Attribute.NOT_ENUMERABLE, value);
value = ScriptFunction.createBuiltin("evalinput", ShellFunctions.EVALINPUT);
addOwnProperty("evalinput", Attribute.NOT_ENUMERABLE, value);
}
private synchronized SwitchPoint getLexicalScopeSwitchPoint() {
SwitchPoint switchPoint = lexicalScopeSwitchPoint;
if (switchPoint == null || switchPoint.hasBeenInvalidated()) {
switchPoint = lexicalScopeSwitchPoint = new SwitchPoint();
}
return switchPoint;
}
private synchronized void invalidateLexicalSwitchPoint() {
if (lexicalScopeSwitchPoint != null) {
context.getLogger(GlobalConstants.class).info("Invalidating non-constant globals on lexical scope update");
SwitchPoint.invalidateAll(new SwitchPoint[]{ lexicalScopeSwitchPoint });
}
}
@SuppressWarnings("unused")
private static Object lexicalScopeFilter(final Object self) {
if (self instanceof Global) {
return ((Global) self).getLexicalScope();
}
return self;
}
private <T extends ScriptObject> T initConstructorAndSwitchPoint(final String name, final Class<T> clazz) {
final T func = initConstructor(name, clazz);
tagBuiltinProperties(name, func);
return func;
}
@SuppressWarnings("hiding")
private void init(final ScriptEngine eng) {
assert Context.getGlobal() == this : "this global is not set as current";
final ScriptEnvironment env = getContext().getEnv();
// initialize Function and Object constructor
initFunctionAndObject();
// Now fix Global's own proto.
this.setInitialProto(getObjectPrototype());
// initialize global function properties
this.eval = this.builtinEval = ScriptFunction.createBuiltin("eval", EVAL);
this.parseInt = ScriptFunction.createBuiltin("parseInt", GlobalFunctions.PARSEINT,
new Specialization[] {
new Specialization(GlobalFunctions.PARSEINT_Z),
new Specialization(GlobalFunctions.PARSEINT_I),
new Specialization(GlobalFunctions.PARSEINT_OI),
new Specialization(GlobalFunctions.PARSEINT_O) });
this.parseFloat = ScriptFunction.createBuiltin("parseFloat", GlobalFunctions.PARSEFLOAT);
this.isNaN = ScriptFunction.createBuiltin("isNaN", GlobalFunctions.IS_NAN,
new Specialization[] {
new Specialization(GlobalFunctions.IS_NAN_I),
new Specialization(GlobalFunctions.IS_NAN_J),
new Specialization(GlobalFunctions.IS_NAN_D) });
this.parseFloat = ScriptFunction.createBuiltin("parseFloat", GlobalFunctions.PARSEFLOAT);
this.isNaN = ScriptFunction.createBuiltin("isNaN", GlobalFunctions.IS_NAN);
this.isFinite = ScriptFunction.createBuiltin("isFinite", GlobalFunctions.IS_FINITE);
this.encodeURI = ScriptFunction.createBuiltin("encodeURI", GlobalFunctions.ENCODE_URI);
this.encodeURIComponent = ScriptFunction.createBuiltin("encodeURIComponent", GlobalFunctions.ENCODE_URICOMPONENT);
this.decodeURI = ScriptFunction.createBuiltin("decodeURI", GlobalFunctions.DECODE_URI);
this.decodeURIComponent = ScriptFunction.createBuiltin("decodeURIComponent", GlobalFunctions.DECODE_URICOMPONENT);
this.escape = ScriptFunction.createBuiltin("escape", GlobalFunctions.ESCAPE);
this.unescape = ScriptFunction.createBuiltin("unescape", GlobalFunctions.UNESCAPE);
this.print = ScriptFunction.createBuiltin("print", env._print_no_newline ? PRINT : PRINTLN);
this.load = ScriptFunction.createBuiltin("load", LOAD);
this.loadWithNewGlobal = ScriptFunction.createBuiltin("loadWithNewGlobal", LOAD_WITH_NEW_GLOBAL);
this.exit = ScriptFunction.createBuiltin("exit", EXIT);
this.quit = ScriptFunction.createBuiltin("quit", EXIT);
// built-in constructors
this.builtinArray = initConstructorAndSwitchPoint("Array", ScriptFunction.class);
this.builtinBoolean = initConstructorAndSwitchPoint("Boolean", ScriptFunction.class);
this.builtinNumber = initConstructorAndSwitchPoint("Number", ScriptFunction.class);
this.builtinString = initConstructorAndSwitchPoint("String", ScriptFunction.class);
this.builtinMath = initConstructorAndSwitchPoint("Math", ScriptObject.class);
// initialize String.prototype.length to 0
// add String.prototype.length
final ScriptObject stringPrototype = getStringPrototype();
stringPrototype.addOwnProperty("length", Attribute.NON_ENUMERABLE_CONSTANT, 0.0);
// set isArray flag on Array.prototype
final ScriptObject arrayPrototype = getArrayPrototype();
arrayPrototype.setIsArray();
// Error stuff
initErrorObjects();
// java access
if (! env._no_java) {
this.javaApi = LAZY_SENTINEL;
this.javaImporter = LAZY_SENTINEL;
initJavaAccess();
}
if (! env._no_typed_arrays) {
this.arrayBuffer = LAZY_SENTINEL;
this.dataView = LAZY_SENTINEL;
this.int8Array = LAZY_SENTINEL;
this.uint8Array = LAZY_SENTINEL;
this.uint8ClampedArray = LAZY_SENTINEL;
this.int16Array = LAZY_SENTINEL;
this.uint16Array = LAZY_SENTINEL;
this.int32Array = LAZY_SENTINEL;
this.uint32Array = LAZY_SENTINEL;
this.float32Array = LAZY_SENTINEL;
this.float64Array = LAZY_SENTINEL;
}
if (env._scripting) {
initScripting(env);
}
if (Context.DEBUG) {
boolean debugOkay;
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
try {
sm.checkPermission(new RuntimePermission(Context.NASHORN_DEBUG_MODE));
debugOkay = true;
} catch (final SecurityException ignored) {
// if no permission, don't initialize Debug object
debugOkay = false;
}
} else {
debugOkay = true;
}
if (debugOkay) {
initDebug();
}
}
copyBuiltins();
// expose script (command line) arguments as "arguments" property of global
arguments = wrapAsObject(env.getArguments().toArray());
if (env._scripting) {
// synonym for "arguments" in scripting mode
addOwnProperty("$ARG", Attribute.NOT_ENUMERABLE, arguments);
}
if (eng != null) {
// default file name
addOwnProperty(ScriptEngine.FILENAME, Attribute.NOT_ENUMERABLE, null);
// __noSuchProperty__ hook for ScriptContext search of missing variables
final ScriptFunction noSuchProp = ScriptFunction.createStrictBuiltin(NO_SUCH_PROPERTY_NAME, NO_SUCH_PROPERTY);
addOwnProperty(NO_SUCH_PROPERTY_NAME, Attribute.NOT_ENUMERABLE, noSuchProp);
}
}
private void initErrorObjects() {
// Error objects
this.builtinError = initConstructor("Error", ScriptFunction.class);
final ScriptObject errorProto = getErrorPrototype();
// Nashorn specific accessors on Error.prototype - stack, lineNumber, columnNumber and fileName
final ScriptFunction getStack = ScriptFunction.createBuiltin("getStack", NativeError.GET_STACK);
final ScriptFunction setStack = ScriptFunction.createBuiltin("setStack", NativeError.SET_STACK);
errorProto.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack);
final ScriptFunction getLineNumber = ScriptFunction.createBuiltin("getLineNumber", NativeError.GET_LINENUMBER);
final ScriptFunction setLineNumber = ScriptFunction.createBuiltin("setLineNumber", NativeError.SET_LINENUMBER);
errorProto.addOwnProperty("lineNumber", Attribute.NOT_ENUMERABLE, getLineNumber, setLineNumber);
final ScriptFunction getColumnNumber = ScriptFunction.createBuiltin("getColumnNumber", NativeError.GET_COLUMNNUMBER);
final ScriptFunction setColumnNumber = ScriptFunction.createBuiltin("setColumnNumber", NativeError.SET_COLUMNNUMBER);
errorProto.addOwnProperty("columnNumber", Attribute.NOT_ENUMERABLE, getColumnNumber, setColumnNumber);
final ScriptFunction getFileName = ScriptFunction.createBuiltin("getFileName", NativeError.GET_FILENAME);
final ScriptFunction setFileName = ScriptFunction.createBuiltin("setFileName", NativeError.SET_FILENAME);
errorProto.addOwnProperty("fileName", Attribute.NOT_ENUMERABLE, getFileName, setFileName);
// ECMA 15.11.4.2 Error.prototype.name
// Error.prototype.name = "Error";
errorProto.set(NativeError.NAME, "Error", 0);
// ECMA 15.11.4.3 Error.prototype.message
// Error.prototype.message = "";
errorProto.set(NativeError.MESSAGE, "", 0);
tagBuiltinProperties("Error", builtinError);
this.builtinReferenceError = initErrorSubtype("ReferenceError", errorProto);
this.builtinSyntaxError = initErrorSubtype("SyntaxError", errorProto);
this.builtinTypeError = initErrorSubtype("TypeError", errorProto);
}
private ScriptFunction initErrorSubtype(final String name, final ScriptObject errorProto) {
final ScriptFunction cons = initConstructor(name, ScriptFunction.class);
final ScriptObject prototype = ScriptFunction.getPrototype(cons);
prototype.set(NativeError.NAME, name, 0);
prototype.set(NativeError.MESSAGE, "", 0);
prototype.setInitialProto(errorProto);
tagBuiltinProperties(name, cons);
return cons;
}
private void initJavaAccess() {
final ScriptObject objectProto = getObjectPrototype();
this.builtinPackages = new NativeJavaPackage("", objectProto);
this.builtinCom = new NativeJavaPackage("com", objectProto);
this.builtinEdu = new NativeJavaPackage("edu", objectProto);
this.builtinJava = new NativeJavaPackage("java", objectProto);
this.builtinJavafx = new NativeJavaPackage("javafx", objectProto);
this.builtinJavax = new NativeJavaPackage("javax", objectProto);
this.builtinOrg = new NativeJavaPackage("org", objectProto);
}
private void initScripting(final ScriptEnvironment scriptEnv) {
ScriptObject value;
value = ScriptFunction.createBuiltin("readLine", ScriptingFunctions.READLINE);
addOwnProperty("readLine", Attribute.NOT_ENUMERABLE, value);
value = ScriptFunction.createBuiltin("readFully", ScriptingFunctions.READFULLY);
addOwnProperty("readFully", Attribute.NOT_ENUMERABLE, value);
final String execName = ScriptingFunctions.EXEC_NAME;
value = ScriptFunction.createBuiltin(execName, ScriptingFunctions.EXEC);
value.addOwnProperty(ScriptingFunctions.THROW_ON_ERROR_NAME, Attribute.NOT_ENUMERABLE, false);
addOwnProperty(execName, Attribute.NOT_ENUMERABLE, value);
// Nashorn extension: global.echo (scripting-mode-only)
// alias for "print"
value = (ScriptObject)get("print");
addOwnProperty("echo", Attribute.NOT_ENUMERABLE, value);
// Nashorn extension: global.$OPTIONS (scripting-mode-only)
final ScriptObject options = newObject();
copyOptions(options, scriptEnv);
addOwnProperty("$OPTIONS", Attribute.NOT_ENUMERABLE, options);
// Nashorn extension: global.$ENV (scripting-mode-only)
if (System.getSecurityManager() == null) {
// do not fill $ENV if we have a security manager around
// Retrieve current state of ENV variables.
final ScriptObject env = newObject();
env.putAll(System.getenv(), scriptEnv._strict);
// Some platforms, e.g., Windows, do not define the PWD environment
// variable, so that the $ENV.PWD property needs to be explicitly
// set.
if (!env.containsKey(ScriptingFunctions.PWD_NAME)) {
env.put(ScriptingFunctions.PWD_NAME, System.getProperty("user.dir"), scriptEnv._strict);
}
addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, env);
} else {
addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
}
// add other special properties for exec support
addOwnProperty(ScriptingFunctions.OUT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
addOwnProperty(ScriptingFunctions.ERR_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
addOwnProperty(ScriptingFunctions.EXIT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
}
private static void copyOptions(final ScriptObject options, final ScriptEnvironment scriptEnv) {
for (final Field f : scriptEnv.getClass().getFields()) {
try {
options.set(f.getName(), f.get(scriptEnv), 0);
} catch (final IllegalArgumentException | IllegalAccessException exp) {
throw new RuntimeException(exp);
}
}
}
private void copyBuiltins() {
this.array = this.builtinArray;
this._boolean = this.builtinBoolean;
this.error = this.builtinError;
this.function = this.builtinFunction;
this.com = this.builtinCom;
this.edu = this.builtinEdu;
this.java = this.builtinJava;
this.javafx = this.builtinJavafx;
this.javax = this.builtinJavax;
this.org = this.builtinOrg;
this.math = this.builtinMath;
this.number = this.builtinNumber;
this.object = this.builtinObject;
this.packages = this.builtinPackages;
this.referenceError = this.builtinReferenceError;
this.string = this.builtinString;
this.syntaxError = this.builtinSyntaxError;
this.typeError = this.builtinTypeError;
}
private void initDebug() {
this.addOwnProperty("Debug", Attribute.NOT_ENUMERABLE, initConstructor("Debug", ScriptObject.class));
}
private Object printImpl(final boolean newLine, final Object... objects) {
final ScriptContext sc = currentContext();
@SuppressWarnings("resource")
final PrintWriter out = sc != null? new PrintWriter(sc.getWriter()) : getContext().getEnv().getOut();
final StringBuilder sb = new StringBuilder();
for (final Object obj : objects) {
if (sb.length() != 0) {
sb.append(' ');
}
sb.append(JSType.toString(obj));
}
// Print all at once to ensure thread friendly result.
if (newLine) {
out.println(sb.toString());
} else {
out.print(sb.toString());
}
out.flush();
return UNDEFINED;
}
private <T extends ScriptObject> T initConstructor(final String name, final Class<T> clazz) {
try {
// Assuming class name pattern for built-in JS constructors.
final StringBuilder sb = new StringBuilder("jdk.nashorn.internal.objects.");
sb.append("Native");
sb.append(name);
sb.append("$Constructor");
final Class<?> funcClass = Class.forName(sb.toString());
final T res = clazz.cast(funcClass.newInstance());
if (res instanceof ScriptFunction) {
// All global constructor prototypes are not-writable,
// not-enumerable and not-configurable.
final ScriptFunction func = (ScriptFunction)res;
func.modifyOwnProperty(func.getProperty("prototype"), Attribute.NON_ENUMERABLE_CONSTANT);
}
if (res.getProto() == null) {
res.setInitialProto(getObjectPrototype());
}
res.setIsBuiltin();
return res;
} catch (final ClassNotFoundException | InstantiationException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
private List<jdk.nashorn.internal.runtime.Property> extractBuiltinProperties(final String name, final ScriptObject func) {
final List<jdk.nashorn.internal.runtime.Property> list = new ArrayList<>();
list.addAll(Arrays.asList(func.getMap().getProperties()));
if (func instanceof ScriptFunction) {
final ScriptObject proto = ScriptFunction.getPrototype((ScriptFunction)func);
if (proto != null) {
list.addAll(Arrays.asList(proto.getMap().getProperties()));
}
}
final jdk.nashorn.internal.runtime.Property prop = getProperty(name);
if (prop != null) {
list.add(prop);
}
return list;
}
/**
* Given a builtin object, traverse its properties recursively and associate them with a name that
* will be a key to their invalidation switchpoint.
* @param name name for key
* @param func builtin script object
*/
private void tagBuiltinProperties(final String name, final ScriptObject func) {
SwitchPoint sp = context.getBuiltinSwitchPoint(name);
if (sp == null) {
sp = context.newBuiltinSwitchPoint(name);
}
//get all builtin properties in this builtin object and register switchpoints keyed on the propery name,
//one overwrite destroys all for now, e.g. Function.prototype.apply = 17; also destroys Function.prototype.call etc
for (final jdk.nashorn.internal.runtime.Property prop : extractBuiltinProperties(name, func)) {
prop.setBuiltinSwitchPoint(sp);
}
}
// Function and Object constructors are inter-dependent. Also,
// Function.prototype
// functions are not properly initialized. We fix the references here.
// NOTE: be careful if you want to re-order the operations here. You may
// have
// to play with object references carefully!!
private void initFunctionAndObject() {
// First-n-foremost is Function
this.builtinFunction = initConstructor("Function", ScriptFunction.class);
// create global anonymous function
final ScriptFunction anon = ScriptFunction.createAnonymous();
// need to copy over members of Function.prototype to anon function
anon.addBoundProperties(getFunctionPrototype());
// Function.prototype === Object.getPrototypeOf(Function) ===
// <anon-function>
builtinFunction.setInitialProto(anon);
builtinFunction.setPrototype(anon);
anon.set("constructor", builtinFunction, 0);
anon.deleteOwnProperty(anon.getMap().findProperty("prototype"));
// use "getter" so that [[ThrowTypeError]] function's arity is 0 - as specified in step 10 of section 13.2.3
this.typeErrorThrower = ScriptFunction.createBuiltin("TypeErrorThrower", Lookup.TYPE_ERROR_THROWER_GETTER);
typeErrorThrower.preventExtensions();
// now initialize Object
this.builtinObject = initConstructor("Object", ScriptFunction.class);
final ScriptObject ObjectPrototype = getObjectPrototype();
// Object.getPrototypeOf(Function.prototype) === Object.prototype
anon.setInitialProto(ObjectPrototype);
// ES6 draft compliant __proto__ property of Object.prototype
// accessors on Object.prototype for "__proto__"
final ScriptFunction getProto = ScriptFunction.createBuiltin("getProto", NativeObject.GET__PROTO__);
final ScriptFunction setProto = ScriptFunction.createBuiltin("setProto", NativeObject.SET__PROTO__);
ObjectPrototype.addOwnProperty("__proto__", Attribute.NOT_ENUMERABLE, getProto, setProto);
// Function valued properties of Function.prototype were not properly
// initialized. Because, these were created before global.function and
// global.object were not initialized.
jdk.nashorn.internal.runtime.Property[] properties = getFunctionPrototype().getMap().getProperties();
for (final jdk.nashorn.internal.runtime.Property property : properties) {
final Object key = property.getKey();
final Object value = builtinFunction.get(key);
if (value instanceof ScriptFunction && value != anon) {
final ScriptFunction func = (ScriptFunction)value;
func.setInitialProto(getFunctionPrototype());
final ScriptObject prototype = ScriptFunction.getPrototype(func);
if (prototype != null) {
prototype.setInitialProto(ObjectPrototype);
}
}
}
// For function valued properties of Object and Object.prototype, make
// sure prototype's proto chain ends with Object.prototype
for (final jdk.nashorn.internal.runtime.Property property : builtinObject.getMap().getProperties()) {
final Object key = property.getKey();
final Object value = builtinObject.get(key);
if (value instanceof ScriptFunction) {
final ScriptFunction func = (ScriptFunction)value;
final ScriptObject prototype = ScriptFunction.getPrototype(func);
if (prototype != null) {
prototype.setInitialProto(ObjectPrototype);
}
}
}
properties = getObjectPrototype().getMap().getProperties();
for (final jdk.nashorn.internal.runtime.Property property : properties) {
final Object key = property.getKey();
if (key.equals("constructor")) {
continue;
}
final Object value = ObjectPrototype.get(key);
if (value instanceof ScriptFunction) {
final ScriptFunction func = (ScriptFunction)value;
final ScriptObject prototype = ScriptFunction.getPrototype(func);
if (prototype != null) {
prototype.setInitialProto(ObjectPrototype);
}
}
}
tagBuiltinProperties("Object", builtinObject);
tagBuiltinProperties("Function", builtinFunction);
tagBuiltinProperties("Function", anon);
}
private static MethodHandle findOwnMH_S(final String name, final Class<?> rtype, final Class<?>... types) {
return MH.findStatic(MethodHandles.lookup(), Global.class, name, MH.type(rtype, types));
}
RegExpResult getLastRegExpResult() {
return lastRegExpResult;
}
void setLastRegExpResult(final RegExpResult regExpResult) {
this.lastRegExpResult = regExpResult;
}
@Override
protected boolean isGlobal() {
return true;
}
/**
* A class representing the ES6 global lexical scope.
*/
private static class LexicalScope extends ScriptObject {
LexicalScope(final Global global) {
super(global, PropertyMap.newMap());
}
@Override
protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
return filterInvocation(super.findGetMethod(desc, request, operator));
}
@Override
protected GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) {
return filterInvocation(super.findSetMethod(desc, request));
}
@Override
protected PropertyMap addBoundProperty(final PropertyMap propMap, final ScriptObject source, final jdk.nashorn.internal.runtime.Property property, final boolean extensible) {
// We override this method just to make it callable by Global
return super.addBoundProperty(propMap, source, property, extensible);
}
private static GuardedInvocation filterInvocation(final GuardedInvocation invocation) {
final MethodType type = invocation.getInvocation().type();
return invocation.asType(type.changeParameterType(0, Object.class)).filterArguments(0, LEXICAL_SCOPE_FILTER);
}
}
}