573 lines
21 KiB
Java
573 lines
21 KiB
Java
|
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||
|
|
*
|
||
|
|
* ***** BEGIN LICENSE BLOCK *****
|
||
|
|
* Version: MPL 1.1/GPL 2.0
|
||
|
|
*
|
||
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
||
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
||
|
|
* the License. You may obtain a copy of the License at
|
||
|
|
* http://www.mozilla.org/MPL/
|
||
|
|
*
|
||
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
||
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||
|
|
* for the specific language governing rights and limitations under the
|
||
|
|
* License.
|
||
|
|
*
|
||
|
|
* The Original Code is Rhino code, released
|
||
|
|
* May 6, 1999.
|
||
|
|
*
|
||
|
|
* The Initial Developer of the Original Code is
|
||
|
|
* Netscape Communications Corporation.
|
||
|
|
* Portions created by the Initial Developer are Copyright (C) 1997-2000
|
||
|
|
* the Initial Developer. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Contributor(s):
|
||
|
|
* Norris Boyd
|
||
|
|
* Igor Bukanov
|
||
|
|
* David C. Navas
|
||
|
|
* Ted Neward
|
||
|
|
*
|
||
|
|
* Alternatively, the contents of this file may be used under the terms of
|
||
|
|
* the GNU General Public License Version 2 or later (the "GPL"), in which
|
||
|
|
* case the provisions of the GPL are applicable instead of those above. If
|
||
|
|
* you wish to allow use of your version of this file only under the terms of
|
||
|
|
* the GPL and not to allow others to use your version of this file under the
|
||
|
|
* MPL, indicate your decision by deleting the provisions above and replacing
|
||
|
|
* them with the notice and other provisions required by the GPL. If you do
|
||
|
|
* not delete the provisions above, a recipient may use your version of this
|
||
|
|
* file under either the MPL or the GPL.
|
||
|
|
*
|
||
|
|
* ***** END LICENSE BLOCK ***** */
|
||
|
|
|
||
|
|
// API class
|
||
|
|
|
||
|
|
package org.mozilla.javascript;
|
||
|
|
|
||
|
|
import java.lang.reflect.*;
|
||
|
|
import java.io.*;
|
||
|
|
|
||
|
|
public class FunctionObject extends BaseFunction
|
||
|
|
{
|
||
|
|
static final long serialVersionUID = -5332312783643935019L;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a JavaScript function object from a Java method.
|
||
|
|
*
|
||
|
|
* <p>The <code>member</code> argument must be either a java.lang.reflect.Method
|
||
|
|
* or a java.lang.reflect.Constructor and must match one of two forms.<p>
|
||
|
|
*
|
||
|
|
* The first form is a member with zero or more parameters
|
||
|
|
* of the following types: Object, String, boolean, Scriptable,
|
||
|
|
* int, or double. The Long type is not supported
|
||
|
|
* because the double representation of a long (which is the
|
||
|
|
* EMCA-mandated storage type for Numbers) may lose precision.
|
||
|
|
* If the member is a Method, the return value must be void or one
|
||
|
|
* of the types allowed for parameters.<p>
|
||
|
|
*
|
||
|
|
* The runtime will perform appropriate conversions based
|
||
|
|
* upon the type of the parameter. A parameter type of
|
||
|
|
* Object specifies that no conversions are to be done. A parameter
|
||
|
|
* of type String will use Context.toString to convert arguments.
|
||
|
|
* Similarly, parameters of type double, boolean, and Scriptable
|
||
|
|
* will cause Context.toNumber, Context.toBoolean, and
|
||
|
|
* Context.toObject, respectively, to be called.<p>
|
||
|
|
*
|
||
|
|
* If the method is not static, the Java 'this' value will
|
||
|
|
* correspond to the JavaScript 'this' value. Any attempt
|
||
|
|
* to call the function with a 'this' value that is not
|
||
|
|
* of the right Java type will result in an error.<p>
|
||
|
|
*
|
||
|
|
* The second form is the variable arguments (or "varargs")
|
||
|
|
* form. If the FunctionObject will be used as a constructor,
|
||
|
|
* the member must have the following parameters
|
||
|
|
* <pre>
|
||
|
|
* (Context cx, Object[] args, Function ctorObj,
|
||
|
|
* boolean inNewExpr)</pre>
|
||
|
|
* and if it is a Method, be static and return an Object result.<p>
|
||
|
|
*
|
||
|
|
* Otherwise, if the FunctionObject will <i>not</i> be used to define a
|
||
|
|
* constructor, the member must be a static Method with parameters
|
||
|
|
* (Context cx, Scriptable thisObj, Object[] args,
|
||
|
|
* Function funObj) </pre>
|
||
|
|
* <pre>
|
||
|
|
* and an Object result.<p>
|
||
|
|
*
|
||
|
|
* When the function varargs form is called as part of a function call,
|
||
|
|
* the <code>args</code> parameter contains the
|
||
|
|
* arguments, with <code>thisObj</code>
|
||
|
|
* set to the JavaScript 'this' value. <code>funObj</code>
|
||
|
|
* is the function object for the invoked function.<p>
|
||
|
|
*
|
||
|
|
* When the constructor varargs form is called or invoked while evaluating
|
||
|
|
* a <code>new</code> expression, <code>args</code> contains the
|
||
|
|
* arguments, <code>ctorObj</code> refers to this FunctionObject, and
|
||
|
|
* <code>inNewExpr</code> is true if and only if a <code>new</code>
|
||
|
|
* expression caused the call. This supports defining a function that
|
||
|
|
* has different behavior when called as a constructor than when
|
||
|
|
* invoked as a normal function call. (For example, the Boolean
|
||
|
|
* constructor, when called as a function,
|
||
|
|
* will convert to boolean rather than creating a new object.)<p>
|
||
|
|
*
|
||
|
|
* @param name the name of the function
|
||
|
|
* @param methodOrConstructor a java.lang.reflect.Method or a java.lang.reflect.Constructor
|
||
|
|
* that defines the object
|
||
|
|
* @param scope enclosing scope of function
|
||
|
|
* @see org.mozilla.javascript.Scriptable
|
||
|
|
*/
|
||
|
|
public FunctionObject(String name, Member methodOrConstructor,
|
||
|
|
Scriptable scope)
|
||
|
|
{
|
||
|
|
if (methodOrConstructor instanceof Constructor) {
|
||
|
|
member = new MemberBox((Constructor<?>) methodOrConstructor);
|
||
|
|
isStatic = true; // well, doesn't take a 'this'
|
||
|
|
} else {
|
||
|
|
member = new MemberBox((Method) methodOrConstructor);
|
||
|
|
isStatic = member.isStatic();
|
||
|
|
}
|
||
|
|
String methodName = member.getName();
|
||
|
|
this.functionName = name;
|
||
|
|
Class<?>[] types = member.argTypes;
|
||
|
|
int arity = types.length;
|
||
|
|
if (arity == 4 && (types[1].isArray() || types[2].isArray())) {
|
||
|
|
// Either variable args or an error.
|
||
|
|
if (types[1].isArray()) {
|
||
|
|
if (!isStatic ||
|
||
|
|
types[0] != ScriptRuntime.ContextClass ||
|
||
|
|
types[1].getComponentType() != ScriptRuntime.ObjectClass ||
|
||
|
|
types[2] != ScriptRuntime.FunctionClass ||
|
||
|
|
types[3] != Boolean.TYPE)
|
||
|
|
{
|
||
|
|
throw Context.reportRuntimeError1(
|
||
|
|
"msg.varargs.ctor", methodName);
|
||
|
|
}
|
||
|
|
parmsLength = VARARGS_CTOR;
|
||
|
|
} else {
|
||
|
|
if (!isStatic ||
|
||
|
|
types[0] != ScriptRuntime.ContextClass ||
|
||
|
|
types[1] != ScriptRuntime.ScriptableClass ||
|
||
|
|
types[2].getComponentType() != ScriptRuntime.ObjectClass ||
|
||
|
|
types[3] != ScriptRuntime.FunctionClass)
|
||
|
|
{
|
||
|
|
throw Context.reportRuntimeError1(
|
||
|
|
"msg.varargs.fun", methodName);
|
||
|
|
}
|
||
|
|
parmsLength = VARARGS_METHOD;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
parmsLength = arity;
|
||
|
|
if (arity > 0) {
|
||
|
|
typeTags = new byte[arity];
|
||
|
|
for (int i = 0; i != arity; ++i) {
|
||
|
|
int tag = getTypeTag(types[i]);
|
||
|
|
if (tag == JAVA_UNSUPPORTED_TYPE) {
|
||
|
|
throw Context.reportRuntimeError2(
|
||
|
|
"msg.bad.parms", types[i].getName(), methodName);
|
||
|
|
}
|
||
|
|
typeTags[i] = (byte)tag;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (member.isMethod()) {
|
||
|
|
Method method = member.method();
|
||
|
|
Class<?> returnType = method.getReturnType();
|
||
|
|
if (returnType == Void.TYPE) {
|
||
|
|
hasVoidReturn = true;
|
||
|
|
} else {
|
||
|
|
returnTypeTag = getTypeTag(returnType);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
Class<?> ctorType = member.getDeclaringClass();
|
||
|
|
if (!ScriptRuntime.ScriptableClass.isAssignableFrom(ctorType)) {
|
||
|
|
throw Context.reportRuntimeError1(
|
||
|
|
"msg.bad.ctor.return", ctorType.getName());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ScriptRuntime.setFunctionProtoAndParent(this, scope);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return One of <tt>JAVA_*_TYPE</tt> constants to indicate desired type
|
||
|
|
* or {@link #JAVA_UNSUPPORTED_TYPE} if the convertion is not
|
||
|
|
* possible
|
||
|
|
*/
|
||
|
|
public static int getTypeTag(Class<?> type)
|
||
|
|
{
|
||
|
|
if (type == ScriptRuntime.StringClass)
|
||
|
|
return JAVA_STRING_TYPE;
|
||
|
|
if (type == ScriptRuntime.IntegerClass || type == Integer.TYPE)
|
||
|
|
return JAVA_INT_TYPE;
|
||
|
|
if (type == ScriptRuntime.BooleanClass || type == Boolean.TYPE)
|
||
|
|
return JAVA_BOOLEAN_TYPE;
|
||
|
|
if (type == ScriptRuntime.DoubleClass || type == Double.TYPE)
|
||
|
|
return JAVA_DOUBLE_TYPE;
|
||
|
|
if (ScriptRuntime.ScriptableClass.isAssignableFrom(type))
|
||
|
|
return JAVA_SCRIPTABLE_TYPE;
|
||
|
|
if (type == ScriptRuntime.ObjectClass)
|
||
|
|
return JAVA_OBJECT_TYPE;
|
||
|
|
|
||
|
|
// Note that the long type is not supported; see the javadoc for
|
||
|
|
// the constructor for this class
|
||
|
|
|
||
|
|
return JAVA_UNSUPPORTED_TYPE;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static Object convertArg(Context cx, Scriptable scope,
|
||
|
|
Object arg, int typeTag)
|
||
|
|
{
|
||
|
|
switch (typeTag) {
|
||
|
|
case JAVA_STRING_TYPE:
|
||
|
|
if (arg instanceof String)
|
||
|
|
return arg;
|
||
|
|
return ScriptRuntime.toString(arg);
|
||
|
|
case JAVA_INT_TYPE:
|
||
|
|
if (arg instanceof Integer)
|
||
|
|
return arg;
|
||
|
|
return new Integer(ScriptRuntime.toInt32(arg));
|
||
|
|
case JAVA_BOOLEAN_TYPE:
|
||
|
|
if (arg instanceof Boolean)
|
||
|
|
return arg;
|
||
|
|
return ScriptRuntime.toBoolean(arg) ? Boolean.TRUE
|
||
|
|
: Boolean.FALSE;
|
||
|
|
case JAVA_DOUBLE_TYPE:
|
||
|
|
if (arg instanceof Double)
|
||
|
|
return arg;
|
||
|
|
return new Double(ScriptRuntime.toNumber(arg));
|
||
|
|
case JAVA_SCRIPTABLE_TYPE:
|
||
|
|
return ScriptRuntime.toObjectOrNull(cx, arg, scope);
|
||
|
|
case JAVA_OBJECT_TYPE:
|
||
|
|
return arg;
|
||
|
|
default:
|
||
|
|
throw new IllegalArgumentException();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the value defined by the method used to construct the object
|
||
|
|
* (number of parameters of the method, or 1 if the method is a "varargs"
|
||
|
|
* form).
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public int getArity() {
|
||
|
|
return parmsLength < 0 ? 1 : parmsLength;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the same value as {@link #getArity()}.
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public int getLength() {
|
||
|
|
return getArity();
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public String getFunctionName()
|
||
|
|
{
|
||
|
|
return (functionName == null) ? "" : functionName;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get Java method or constructor this function represent.
|
||
|
|
*/
|
||
|
|
public Member getMethodOrConstructor()
|
||
|
|
{
|
||
|
|
if (member.isMethod()) {
|
||
|
|
return member.method();
|
||
|
|
} else {
|
||
|
|
return member.ctor();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static Method findSingleMethod(Method[] methods, String name)
|
||
|
|
{
|
||
|
|
Method found = null;
|
||
|
|
for (int i = 0, N = methods.length; i != N; ++i) {
|
||
|
|
Method method = methods[i];
|
||
|
|
if (method != null && name.equals(method.getName())) {
|
||
|
|
if (found != null) {
|
||
|
|
throw Context.reportRuntimeError2(
|
||
|
|
"msg.no.overload", name,
|
||
|
|
method.getDeclaringClass().getName());
|
||
|
|
}
|
||
|
|
found = method;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return found;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns all public methods declared by the specified class. This excludes
|
||
|
|
* inherited methods.
|
||
|
|
*
|
||
|
|
* @param clazz the class from which to pull public declared methods
|
||
|
|
* @return the public methods declared in the specified class
|
||
|
|
* @see Class#getDeclaredMethods()
|
||
|
|
*/
|
||
|
|
static Method[] getMethodList(Class<?> clazz) {
|
||
|
|
Method[] methods = null;
|
||
|
|
try {
|
||
|
|
// getDeclaredMethods may be rejected by the security manager
|
||
|
|
// but getMethods is more expensive
|
||
|
|
if (!sawSecurityException)
|
||
|
|
methods = clazz.getDeclaredMethods();
|
||
|
|
} catch (SecurityException e) {
|
||
|
|
// If we get an exception once, give up on getDeclaredMethods
|
||
|
|
sawSecurityException = true;
|
||
|
|
}
|
||
|
|
if (methods == null) {
|
||
|
|
methods = clazz.getMethods();
|
||
|
|
}
|
||
|
|
int count = 0;
|
||
|
|
for (int i=0; i < methods.length; i++) {
|
||
|
|
if (sawSecurityException
|
||
|
|
? methods[i].getDeclaringClass() != clazz
|
||
|
|
: !Modifier.isPublic(methods[i].getModifiers()))
|
||
|
|
{
|
||
|
|
methods[i] = null;
|
||
|
|
} else {
|
||
|
|
count++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Method[] result = new Method[count];
|
||
|
|
int j=0;
|
||
|
|
for (int i=0; i < methods.length; i++) {
|
||
|
|
if (methods[i] != null)
|
||
|
|
result[j++] = methods[i];
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Define this function as a JavaScript constructor.
|
||
|
|
* <p>
|
||
|
|
* Sets up the "prototype" and "constructor" properties. Also
|
||
|
|
* calls setParent and setPrototype with appropriate values.
|
||
|
|
* Then adds the function object as a property of the given scope, using
|
||
|
|
* <code>prototype.getClassName()</code>
|
||
|
|
* as the name of the property.
|
||
|
|
*
|
||
|
|
* @param scope the scope in which to define the constructor (typically
|
||
|
|
* the global object)
|
||
|
|
* @param prototype the prototype object
|
||
|
|
* @see org.mozilla.javascript.Scriptable#setParentScope
|
||
|
|
* @see org.mozilla.javascript.Scriptable#setPrototype
|
||
|
|
* @see org.mozilla.javascript.Scriptable#getClassName
|
||
|
|
*/
|
||
|
|
public void addAsConstructor(Scriptable scope, Scriptable prototype)
|
||
|
|
{
|
||
|
|
initAsConstructor(scope, prototype);
|
||
|
|
defineProperty(scope, prototype.getClassName(),
|
||
|
|
this, ScriptableObject.DONTENUM);
|
||
|
|
}
|
||
|
|
|
||
|
|
void initAsConstructor(Scriptable scope, Scriptable prototype)
|
||
|
|
{
|
||
|
|
ScriptRuntime.setFunctionProtoAndParent(this, scope);
|
||
|
|
setImmunePrototypeProperty(prototype);
|
||
|
|
|
||
|
|
prototype.setParentScope(this);
|
||
|
|
|
||
|
|
defineProperty(prototype, "constructor", this,
|
||
|
|
ScriptableObject.DONTENUM |
|
||
|
|
ScriptableObject.PERMANENT |
|
||
|
|
ScriptableObject.READONLY);
|
||
|
|
setParentScope(scope);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @deprecated Use {@link #getTypeTag(Class)}
|
||
|
|
* and {@link #convertArg(Context, Scriptable, Object, int)}
|
||
|
|
* for type conversion.
|
||
|
|
*/
|
||
|
|
public static Object convertArg(Context cx, Scriptable scope,
|
||
|
|
Object arg, Class<?> desired)
|
||
|
|
{
|
||
|
|
int tag = getTypeTag(desired);
|
||
|
|
if (tag == JAVA_UNSUPPORTED_TYPE) {
|
||
|
|
throw Context.reportRuntimeError1
|
||
|
|
("msg.cant.convert", desired.getName());
|
||
|
|
}
|
||
|
|
return convertArg(cx, scope, arg, tag);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Performs conversions on argument types if needed and
|
||
|
|
* invokes the underlying Java method or constructor.
|
||
|
|
* <p>
|
||
|
|
* Implements Function.call.
|
||
|
|
*
|
||
|
|
* @see org.mozilla.javascript.Function#call(
|
||
|
|
* Context, Scriptable, Scriptable, Object[])
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public Object call(Context cx, Scriptable scope, Scriptable thisObj,
|
||
|
|
Object[] args)
|
||
|
|
{
|
||
|
|
Object result;
|
||
|
|
boolean checkMethodResult = false;
|
||
|
|
|
||
|
|
if (parmsLength < 0) {
|
||
|
|
if (parmsLength == VARARGS_METHOD) {
|
||
|
|
Object[] invokeArgs = { cx, thisObj, args, this };
|
||
|
|
result = member.invoke(null, invokeArgs);
|
||
|
|
checkMethodResult = true;
|
||
|
|
} else {
|
||
|
|
boolean inNewExpr = (thisObj == null);
|
||
|
|
Boolean b = inNewExpr ? Boolean.TRUE : Boolean.FALSE;
|
||
|
|
Object[] invokeArgs = { cx, args, this, b };
|
||
|
|
result = (member.isCtor())
|
||
|
|
? member.newInstance(invokeArgs)
|
||
|
|
: member.invoke(null, invokeArgs);
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
if (!isStatic) {
|
||
|
|
Class<?> clazz = member.getDeclaringClass();
|
||
|
|
if (!clazz.isInstance(thisObj)) {
|
||
|
|
boolean compatible = false;
|
||
|
|
if (thisObj == scope) {
|
||
|
|
Scriptable parentScope = getParentScope();
|
||
|
|
if (scope != parentScope) {
|
||
|
|
// Call with dynamic scope for standalone function,
|
||
|
|
// use parentScope as thisObj
|
||
|
|
compatible = clazz.isInstance(parentScope);
|
||
|
|
if (compatible) {
|
||
|
|
thisObj = parentScope;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!compatible) {
|
||
|
|
// Couldn't find an object to call this on.
|
||
|
|
throw ScriptRuntime.typeError1("msg.incompat.call",
|
||
|
|
functionName);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Object[] invokeArgs;
|
||
|
|
if (parmsLength == args.length) {
|
||
|
|
// Do not allocate new argument array if java arguments are
|
||
|
|
// the same as the original js ones.
|
||
|
|
invokeArgs = args;
|
||
|
|
for (int i = 0; i != parmsLength; ++i) {
|
||
|
|
Object arg = args[i];
|
||
|
|
Object converted = convertArg(cx, scope, arg, typeTags[i]);
|
||
|
|
if (arg != converted) {
|
||
|
|
if (invokeArgs == args) {
|
||
|
|
invokeArgs = args.clone();
|
||
|
|
}
|
||
|
|
invokeArgs[i] = converted;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else if (parmsLength == 0) {
|
||
|
|
invokeArgs = ScriptRuntime.emptyArgs;
|
||
|
|
} else {
|
||
|
|
invokeArgs = new Object[parmsLength];
|
||
|
|
for (int i = 0; i != parmsLength; ++i) {
|
||
|
|
Object arg = (i < args.length)
|
||
|
|
? args[i]
|
||
|
|
: Undefined.instance;
|
||
|
|
invokeArgs[i] = convertArg(cx, scope, arg, typeTags[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (member.isMethod()) {
|
||
|
|
result = member.invoke(thisObj, invokeArgs);
|
||
|
|
checkMethodResult = true;
|
||
|
|
} else {
|
||
|
|
result = member.newInstance(invokeArgs);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (checkMethodResult) {
|
||
|
|
if (hasVoidReturn) {
|
||
|
|
result = Undefined.instance;
|
||
|
|
} else if (returnTypeTag == JAVA_UNSUPPORTED_TYPE) {
|
||
|
|
result = cx.getWrapFactory().wrap(cx, scope, result, null);
|
||
|
|
}
|
||
|
|
// XXX: the code assumes that if returnTypeTag == JAVA_OBJECT_TYPE
|
||
|
|
// then the Java method did a proper job of converting the
|
||
|
|
// result to JS primitive or Scriptable to avoid
|
||
|
|
// potentially costly Context.javaToJS call.
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return new {@link Scriptable} instance using the default
|
||
|
|
* constructor for the class of the underlying Java method.
|
||
|
|
* Return null to indicate that the call method should be used to create
|
||
|
|
* new objects.
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public Scriptable createObject(Context cx, Scriptable scope) {
|
||
|
|
if (member.isCtor() || parmsLength == VARARGS_CTOR) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
Scriptable result;
|
||
|
|
try {
|
||
|
|
result = (Scriptable) member.getDeclaringClass().newInstance();
|
||
|
|
} catch (Exception ex) {
|
||
|
|
throw Context.throwAsScriptRuntimeEx(ex);
|
||
|
|
}
|
||
|
|
|
||
|
|
result.setPrototype(getClassPrototype());
|
||
|
|
result.setParentScope(getParentScope());
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
boolean isVarArgsMethod() {
|
||
|
|
return parmsLength == VARARGS_METHOD;
|
||
|
|
}
|
||
|
|
|
||
|
|
boolean isVarArgsConstructor() {
|
||
|
|
return parmsLength == VARARGS_CTOR;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void readObject(ObjectInputStream in)
|
||
|
|
throws IOException, ClassNotFoundException
|
||
|
|
{
|
||
|
|
in.defaultReadObject();
|
||
|
|
if (parmsLength > 0) {
|
||
|
|
Class<?>[] types = member.argTypes;
|
||
|
|
typeTags = new byte[parmsLength];
|
||
|
|
for (int i = 0; i != parmsLength; ++i) {
|
||
|
|
typeTags[i] = (byte)getTypeTag(types[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (member.isMethod()) {
|
||
|
|
Method method = member.method();
|
||
|
|
Class<?> returnType = method.getReturnType();
|
||
|
|
if (returnType == Void.TYPE) {
|
||
|
|
hasVoidReturn = true;
|
||
|
|
} else {
|
||
|
|
returnTypeTag = getTypeTag(returnType);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static final short VARARGS_METHOD = -1;
|
||
|
|
private static final short VARARGS_CTOR = -2;
|
||
|
|
|
||
|
|
private static boolean sawSecurityException;
|
||
|
|
|
||
|
|
public static final int JAVA_UNSUPPORTED_TYPE = 0;
|
||
|
|
public static final int JAVA_STRING_TYPE = 1;
|
||
|
|
public static final int JAVA_INT_TYPE = 2;
|
||
|
|
public static final int JAVA_BOOLEAN_TYPE = 3;
|
||
|
|
public static final int JAVA_DOUBLE_TYPE = 4;
|
||
|
|
public static final int JAVA_SCRIPTABLE_TYPE = 5;
|
||
|
|
public static final int JAVA_OBJECT_TYPE = 6;
|
||
|
|
|
||
|
|
MemberBox member;
|
||
|
|
private String functionName;
|
||
|
|
private transient byte[] typeTags;
|
||
|
|
private int parmsLength;
|
||
|
|
private transient boolean hasVoidReturn;
|
||
|
|
private transient int returnTypeTag;
|
||
|
|
private boolean isStatic;
|
||
|
|
}
|