private static double toDouble(Object value) {
if (value instanceof Number) {
return ((Number) value).doubleValue();
} else if (value instanceof String) {
return ScriptRuntime.toNumber((String) value);
} else if (value instanceof Scriptable) {
if (value instanceof Wrapper) {
// XXX: optimize tail-recursion?
return toDouble(((Wrapper) value).unwrap());
} else {
return ScriptRuntime.toNumber(value);
}
} else {
Method meth;
try {
meth = value.getClass().getMethod("doubleValue", (Class[]) null);
} catch (NoSuchMethodException e) {
meth = null;
} catch (SecurityException e) {
meth = null;
}
if (meth != null) {
try {
return ((Number) meth.invoke(value, (Object[]) null)).doubleValue();
} catch (IllegalAccessException e) {
// XXX: ignore, or error message?
reportConversionError(value, Double.TYPE);
} catch (InvocationTargetException e) {
// XXX: ignore, or error message?
reportConversionError(value, Double.TYPE);
}
}
return ScriptRuntime.toNumber(value.toString());
}
}
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:
if (arg instanceof Scriptable) {
return arg;
}
return ScriptRuntime.toObject(cx, scope, arg);
case JAVA_OBJECT_TYPE:
return arg;
default:
throw new IllegalArgumentException();
}
}
public Object getDefaultValue(Class<?> hint) {
Object value;
if (hint == null) {
if (javaObject instanceof Boolean) {
hint = ScriptRuntime.BooleanClass;
}
}
if (hint == null || hint == ScriptRuntime.StringClass) {
value = javaObject.toString();
} else {
String converterName;
if (hint == ScriptRuntime.BooleanClass) {
converterName = "booleanValue";
} else if (hint == ScriptRuntime.NumberClass) {
converterName = "doubleValue";
} else {
throw Context.reportRuntimeError0("msg.default.value");
}
Object converterObject = get(converterName, this);
if (converterObject instanceof Function) {
Function f = (Function) converterObject;
value = f.call(Context.getContext(), f.getParentScope(), this, ScriptRuntime.emptyArgs);
} else {
if (hint == ScriptRuntime.NumberClass && javaObject instanceof Boolean) {
boolean b = ((Boolean) javaObject).booleanValue();
value = ScriptRuntime.wrapNumber(b ? 1.0 : 0.0);
} else {
value = javaObject.toString();
}
}
}
return value;
}
static Object js_createAdpter(Context cx, Scriptable scope, Object[] args) {
int N = args.length;
if (N == 0) {
throw ScriptRuntime.typeError0("msg.adapter.zero.args");
}
Class superClass = null;
Class[] intfs = new Class[N - 1];
int interfaceCount = 0;
for (int i = 0; i != N - 1; ++i) {
Object arg = args[i];
if (!(arg instanceof NativeJavaClass)) {
throw ScriptRuntime.typeError2(
"msg.not.java.class.arg", String.valueOf(i), ScriptRuntime.toString(arg));
}
Class c = ((NativeJavaClass) arg).getClassObject();
if (!c.isInterface()) {
if (superClass != null) {
throw ScriptRuntime.typeError2("msg.only.one.super", superClass.getName(), c.getName());
}
superClass = c;
} else {
intfs[interfaceCount++] = c;
}
}
if (superClass == null) superClass = ScriptRuntime.ObjectClass;
Class[] interfaces = new Class[interfaceCount];
System.arraycopy(intfs, 0, interfaces, 0, interfaceCount);
Scriptable obj = ScriptRuntime.toObject(cx, scope, args[N - 1]);
Class adapterClass = getAdapterClass(scope, superClass, interfaces, obj);
Class[] ctorParms = {ScriptRuntime.ContextFactoryClass, ScriptRuntime.ScriptableClass};
Object[] ctorArgs = {cx.getFactory(), obj};
try {
Object adapter = adapterClass.getConstructor(ctorParms).newInstance(ctorArgs);
return getAdapterSelf(adapterClass, adapter);
} catch (Exception ex) {
throw Context.throwAsScriptRuntimeEx(ex);
}
}
private static long toInteger(Object value, Class<?> type, double min, double max) {
double d = toDouble(value);
if (Double.isInfinite(d) || Double.isNaN(d)) {
// Convert to string first, for more readable message
reportConversionError(ScriptRuntime.toString(value), type);
}
if (d > 0.0) {
d = Math.floor(d);
} else {
d = Math.ceil(d);
}
if (d < min || d > max) {
// Convert to string first, for more readable message
reportConversionError(ScriptRuntime.toString(value), type);
}
return (long) d;
}
/**
* Take an object from the scripting layer and convert it to an int.
*
* @param obj
* @return int
*/
private int toInt(Object obj) {
int result = 0;
if (obj instanceof String) {
result = Integer.parseInt((String) obj);
} else if (obj instanceof Number) {
result = ((Number) obj).intValue();
} else if (obj instanceof Scriptable) {
Scriptable sobj = (Scriptable) obj;
if (sobj.getClassName().equals("Number")) {
result = (int) ScriptRuntime.toNumber(sobj);
}
}
return result;
}
public static Function getFunction(Scriptable obj, String functionName) {
Object x = ScriptableObject.getProperty(obj, functionName);
if (x == Scriptable.NOT_FOUND) {
// This method used to swallow the exception from calling
// an undefined method. People have come to depend on this
// somewhat dubious behavior. It allows people to avoid
// implementing listener methods that they don't care about,
// for instance.
return null;
}
if (!(x instanceof Function)) throw ScriptRuntime.notFunctionError(x, functionName);
return (Function) x;
}
/**
* 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 gov.nbcs.rp.common.js.javascript.Scriptable#setParentScope
* @see gov.nbcs.rp.common.js.javascript.Scriptable#setPrototype
* @see gov.nbcs.rp.common.js.javascript.Scriptable#getClassName
*/
public void addAsConstructor(Scriptable scope, Scriptable prototype) {
ScriptRuntime.setFunctionProtoAndParent(this, scope);
setImmunePrototypeProperty(prototype);
prototype.setParentScope(this);
final int attr =
ScriptableObject.DONTENUM | ScriptableObject.PERMANENT | ScriptableObject.READONLY;
defineProperty(prototype, "constructor", this, attr);
String name = prototype.getClassName();
defineProperty(scope, name, this, ScriptableObject.DONTENUM);
setParentScope(scope);
}
private static ObjToIntMap getObjectFunctionNames(Scriptable obj) {
Object[] ids = ScriptableObject.getPropertyIds(obj);
ObjToIntMap map = new ObjToIntMap(ids.length);
for (int i = 0; i != ids.length; ++i) {
if (!(ids[i] instanceof String)) continue;
String id = (String) ids[i];
Object value = ScriptableObject.getProperty(obj, id);
if (value instanceof Function) {
Function f = (Function) value;
int length = ScriptRuntime.toInt32(ScriptableObject.getProperty(f, "length"));
if (length < 0) {
length = 0;
}
map.put(id, length);
}
}
return map;
}
/**
* Utility method to construct type error to indicate incompatible call when converting script
* thisObj to a particular type is not possible. Possible usage would be to have a private
* function like realThis:
*
* <pre>
* private static NativeSomething realThis(Scriptable thisObj,
* IdFunctionObject f)
* {
* if (!(thisObj instanceof NativeSomething))
* throw incompatibleCallError(f);
* return (NativeSomething)thisObj;
* }
* </pre>
*
* Note that although such function can be implemented universally via
* java.lang.Class.isInstance(), it would be much more slower.
*
* @param f function that is attempting to convert 'this' object.
* @return Scriptable object suitable for a check by the instanceof operator.
* @throws RuntimeException if no more instanceof target can be found
*/
protected static EcmaError incompatibleCallError(IdFunctionObject f) {
throw ScriptRuntime.typeError1("msg.incompat.call", f.getFunctionName());
}
/**
* Performs conversions on argument types if needed and invokes the underlying Java method or
* constructor.
*
* <p>Implements Function.call.
*
* @see gov.nbcs.rp.common.js.javascript.Function#call( Context, Scriptable, Scriptable, Object[])
*/
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 = (Object[]) 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;
}
/**
* 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 gov.nbcs.rp.common.js.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);
}
static Object js_createAdapter(Context cx, Scriptable scope, Object[] args) {
int N = args.length;
if (N == 0) {
throw ScriptRuntime.typeError0("msg.adapter.zero.args");
}
// Expected arguments:
// Any number of NativeJavaClass objects representing the super-class
// and/or interfaces to implement, followed by one NativeObject providing
// the implementation, followed by any number of arguments to pass on
// to the (super-class) constructor.
int classCount;
for (classCount = 0; classCount < N - 1; classCount++) {
Object arg = args[classCount];
// We explicitly test for NativeObject here since checking for
// instanceof ScriptableObject or !(instanceof NativeJavaClass)
// would fail for a Java class that isn't found in the class path
// as NativeJavaPackage extends ScriptableObject.
if (arg instanceof NativeObject) {
break;
}
if (!(arg instanceof NativeJavaClass)) {
throw ScriptRuntime.typeError2(
"msg.not.java.class.arg", String.valueOf(classCount), ScriptRuntime.toString(arg));
}
}
Class<?> superClass = null;
Class<?>[] intfs = new Class[classCount];
int interfaceCount = 0;
for (int i = 0; i < classCount; ++i) {
Class<?> c = ((NativeJavaClass) args[i]).getClassObject();
if (!c.isInterface()) {
if (superClass != null) {
throw ScriptRuntime.typeError2("msg.only.one.super", superClass.getName(), c.getName());
}
superClass = c;
} else {
intfs[interfaceCount++] = c;
}
}
if (superClass == null) {
superClass = ScriptRuntime.ObjectClass;
}
Class<?>[] interfaces = new Class[interfaceCount];
System.arraycopy(intfs, 0, interfaces, 0, interfaceCount);
// next argument is implementation, must be scriptable
Scriptable obj = ScriptableObject.ensureScriptable(args[classCount]);
Class<?> adapterClass = getAdapterClass(scope, superClass, interfaces, obj);
Object adapter;
int argsCount = N - classCount - 1;
try {
if (argsCount > 0) {
// Arguments contain parameters for super-class constructor.
// We use the generic Java method lookup logic to find and
// invoke the right constructor.
Object[] ctorArgs = new Object[argsCount + 2];
ctorArgs[0] = obj;
ctorArgs[1] = cx.getFactory();
System.arraycopy(args, classCount + 1, ctorArgs, 2, argsCount);
// TODO: cache class wrapper?
NativeJavaClass classWrapper = new NativeJavaClass(scope, adapterClass, true);
NativeJavaMethod ctors = classWrapper.members.ctors;
int index = ctors.findCachedFunction(cx, ctorArgs);
if (index < 0) {
String sig = NativeJavaMethod.scriptSignature(args);
throw Context.reportRuntimeError2("msg.no.java.ctor", adapterClass.getName(), sig);
}
// Found the constructor, so try invoking it.
adapter = NativeJavaClass.constructInternal(ctorArgs, ctors.methods[index]);
} else {
Class<?>[] ctorParms = {ScriptRuntime.ScriptableClass, ScriptRuntime.ContextFactoryClass};
Object[] ctorArgs = {obj, cx.getFactory()};
adapter = adapterClass.getConstructor(ctorParms).newInstance(ctorArgs);
}
Object self = getAdapterSelf(adapterClass, adapter);
// Return unwrapped JavaAdapter if it implements Scriptable
if (self instanceof Wrapper) {
Object unwrapped = ((Wrapper) self).unwrap();
if (unwrapped instanceof Scriptable) {
if (unwrapped instanceof ScriptableObject) {
ScriptRuntime.setObjectProtoAndParent((ScriptableObject) unwrapped, scope);
}
return unwrapped;
}
}
return self;
} catch (Exception ex) {
throw Context.throwAsScriptRuntimeEx(ex);
}
}
/** Type-munging for field setting and method invocation. Conforms to LC3 specification */
static Object coerceTypeImpl(Class<?> type, Object value) {
if (value != null && value.getClass() == type) {
return value;
}
switch (getJSTypeCode(value)) {
case JSTYPE_NULL:
// raise error if type.isPrimitive()
if (type.isPrimitive()) {
reportConversionError(value, type);
}
return null;
case JSTYPE_UNDEFINED:
if (type == ScriptRuntime.StringClass || type == ScriptRuntime.ObjectClass) {
return "undefined";
} else {
reportConversionError("undefined", type);
}
break;
case JSTYPE_BOOLEAN:
// Under LC3, only JS Booleans can be coerced into a Boolean value
if (type == Boolean.TYPE
|| type == ScriptRuntime.BooleanClass
|| type == ScriptRuntime.ObjectClass) {
return value;
} else if (type == ScriptRuntime.StringClass) {
return value.toString();
} else {
reportConversionError(value, type);
}
break;
case JSTYPE_NUMBER:
if (type == ScriptRuntime.StringClass) {
return ScriptRuntime.toString(value);
} else if (type == ScriptRuntime.ObjectClass) {
return coerceToNumber(Double.TYPE, value);
} else if ((type.isPrimitive() && type != Boolean.TYPE)
|| ScriptRuntime.NumberClass.isAssignableFrom(type)) {
return coerceToNumber(type, value);
} else {
reportConversionError(value, type);
}
break;
case JSTYPE_STRING:
if (type == ScriptRuntime.StringClass || type.isInstance(value)) {
return value;
} else if (type == Character.TYPE || type == ScriptRuntime.CharacterClass) {
// Special case for converting a single char string to a
// character
// Placed here because it applies *only* to JS strings,
// not other JS objects converted to strings
if (((String) value).length() == 1) {
return new Character(((String) value).charAt(0));
} else {
return coerceToNumber(type, value);
}
} else if ((type.isPrimitive() && type != Boolean.TYPE)
|| ScriptRuntime.NumberClass.isAssignableFrom(type)) {
return coerceToNumber(type, value);
} else {
reportConversionError(value, type);
}
break;
case JSTYPE_JAVA_CLASS:
if (value instanceof Wrapper) {
value = ((Wrapper) value).unwrap();
}
if (type == ScriptRuntime.ClassClass || type == ScriptRuntime.ObjectClass) {
return value;
} else if (type == ScriptRuntime.StringClass) {
return value.toString();
} else {
reportConversionError(value, type);
}
break;
case JSTYPE_JAVA_OBJECT:
case JSTYPE_JAVA_ARRAY:
if (value instanceof Wrapper) {
value = ((Wrapper) value).unwrap();
}
if (type.isPrimitive()) {
if (type == Boolean.TYPE) {
reportConversionError(value, type);
}
return coerceToNumber(type, value);
} else {
if (type == ScriptRuntime.StringClass) {
return value.toString();
} else {
if (type.isInstance(value)) {
return value;
} else {
reportConversionError(value, type);
}
}
}
break;
case JSTYPE_OBJECT:
if (type == ScriptRuntime.StringClass) {
return ScriptRuntime.toString(value);
} else if (type.isPrimitive()) {
if (type == Boolean.TYPE) {
reportConversionError(value, type);
}
return coerceToNumber(type, value);
} else if (type.isInstance(value)) {
return value;
} else if (type == ScriptRuntime.DateClass && value instanceof NativeDate) {
double time = ((NativeDate) value).getJSTimeValue();
// XXX: This will replace NaN by 0
return new Date((long) time);
} else if (type.isArray() && value instanceof NativeArray) {
// Make a new java array, and coerce the JS array components
// to the target (component) type.
NativeArray array = (NativeArray) value;
long length = array.getLength();
Class<?> arrayType = type.getComponentType();
Object Result = Array.newInstance(arrayType, (int) length);
for (int i = 0; i < length; ++i) {
try {
Array.set(Result, i, coerceType(arrayType, array.get(i, array)));
} catch (EvaluatorException ee) {
reportConversionError(value, type);
}
}
return Result;
} else if (value instanceof Wrapper) {
value = ((Wrapper) value).unwrap();
if (type.isInstance(value)) return value;
reportConversionError(value, type);
} else if (type.isInterface() && value instanceof Callable) {
// Try to use function as implementation of Java interface.
//
// XXX: Currently only instances of ScriptableObject are
// supported since the resulting interface proxies should
// be reused next time conversion is made and generic
// Callable has no storage for it. Weak references can
// address it but for now use this restriction.
if (value instanceof ScriptableObject) {
ScriptableObject so = (ScriptableObject) value;
Object key = Kit.makeHashKeyFromPair(COERCED_INTERFACE_KEY, type);
Object old = so.getAssociatedValue(key);
if (old != null) {
// Function was already wrapped
return old;
}
Context cx = Context.getContext();
Object glue = InterfaceAdapter.create(cx, type, (Callable) value);
// Store for later retrival
glue = so.associateValue(key, glue);
return glue;
}
reportConversionError(value, type);
} else {
reportConversionError(value, type);
}
break;
}
return value;
}