/** Execute the static function */
ESBase execute() throws Throwable {
Global resin = (Global) prototype;
try {
Call call = resin.getCall();
call.caller = call;
call.setArg(0, this);
call.top = 1;
call.scopeLength = 1;
call.scope[0] = this;
call.global = this;
ESBase value = null;
try {
value = call(0, call, 0);
} finally {
resin.freeCall(call);
}
return value;
} catch (ESException e) {
throw e;
} catch (Throwable e) {
throw new ESWrapperException(e);
}
}
/** XXX: not right */
public ESBase toPrimitive(int hint) throws Throwable {
Global resin = Global.getGlobalProto();
Call eval = resin.getCall();
eval.global = resin.getGlobal();
try {
ESBase fun = hasProperty(hint == STRING ? TO_STRING : VALUE_OF);
if (fun instanceof ESClosure || fun instanceof Native) {
eval.stack[0] = this;
eval.top = 1;
ESBase value = fun.call(eval, 0);
if (value instanceof ESBase && !(value instanceof ESObject)) return value;
}
fun = hasProperty(hint == STRING ? VALUE_OF : TO_STRING);
if (fun instanceof ESClosure || fun instanceof Native) {
eval.stack[0] = this;
eval.top = 1;
ESBase value = fun.call(eval, 0);
if (value instanceof ESBase && !(value instanceof ESObject)) return value;
}
throw new ESException("cannot convert object to primitive type");
} finally {
resin.freeCall(eval);
}
}
private int compare(ESBase cmp, ESBase a, ESBase b) throws Throwable {
if (a == b) return 0;
else if (a == esUndefined) return 1;
else if (b == esUndefined) return -1;
else if (a == esNull) return 1;
else if (b == esNull) return -1;
else if (cmp != null) {
// Call eval = new Call(ESGlobal.getGlobalProto(), false);
Global resin = Global.getGlobalProto();
Call eval = resin.getCall();
eval.stack[0] = esNull;
eval.stack[1] = a;
eval.stack[2] = b;
eval.top = 1;
int result = cmp.call(eval, 2).toInt32();
resin.freeCall(eval);
return result;
} else {
String sa = a.toString();
String sb = b.toString();
return sa.compareTo(sb);
}
}