C++ JS_IdToValue函数代码示例

/* @smjs_globhist_class.getProperty */
static JSBool
smjs_globhist_get_property(JSContext *ctx, JSObject *obj, jsid id, jsval *vp)
{
    JSObject *jsobj;
    unsigned char *uri_string;
    struct global_history_item *history_item;
    jsval tmp;

    if (!JS_IdToValue(ctx, id, &tmp))
        goto ret_null;

    uri_string = JS_EncodeString(ctx, JS_ValueToString(ctx, tmp));
    if (!uri_string) goto ret_null;

    history_item = get_global_history_item(uri_string);
    if (!history_item) goto ret_null;

    jsobj = smjs_get_globhist_item_object(history_item);
    if (!jsobj) goto ret_null;

    *vp = OBJECT_TO_JSVAL(jsobj);

    return JS_TRUE;

ret_null:
    *vp = JSVAL_NULL;

    return JS_TRUE;
}

JSBool jsval_to_TProductInfo(JSContext *cx, jsval v, TProductInfo* ret)
{
    JSObject* tmp = JSVAL_TO_OBJECT(v);
    if (!tmp) {
        LOGD("jsval_to_TProductInfo: the jsval is not an object.");
        return JS_FALSE;
    }

    JSObject* it = JS_NewPropertyIterator(cx, tmp);

    while (true)
    {
        jsid idp;
        jsval key;
        if (! JS_NextProperty(cx, it, &idp) || ! JS_IdToValue(cx, idp, &key))
            return JS_FALSE; // error
        if (key == JSVAL_VOID)
            break; // end of iteration
        if (! JSVAL_IS_STRING(key))
            continue; // ignore integer properties
        jsval value;
        JS_GetPropertyById(cx, tmp, idp, &value);
        if (! JSVAL_IS_STRING(value))
            continue; // ignore integer properties

        JSStringWrapper strWrapper(JSVAL_TO_STRING(key), cx);
        JSStringWrapper strWrapper2(JSVAL_TO_STRING(value), cx);

        (*ret)[strWrapper.get()] = strWrapper2.get();
        LOGD("iterate object: key = %s, value = %s", strWrapper.get().c_str(), strWrapper2.get().c_str());
    }

    return JS_TRUE;
}

bool jsval_to_FBInfo(JSContext *cx, jsval v, StringMap* ret)
{
	JSObject* tmp = JSVAL_TO_OBJECT(v);
	if (!tmp) {
		LOGD("jsval_to_TProductInfo: the jsval is not an object.");
		return false;
	}

	JSObject* it = JS_NewPropertyIterator(cx, tmp);

	while (true)
	{
		jsid idp;
		jsval key;
		if (! JS_NextProperty(cx, it, &idp) || ! JS_IdToValue(cx, idp, &key))
			return false; // error
		if (key == JSVAL_VOID)
			break; // end of iteration
		if (! JSVAL_IS_STRING(key))
			continue; // ignore integer properties
		JS::RootedValue value(cx);
		JS_GetPropertyById(cx, tmp, idp, &value);

//		if (! JSVAL_IS_STRING(value))
//			continue; // ignore integer properties
		if(JSVAL_IS_STRING(value))
		{

			JSStringWrapper strWrapper(JSVAL_TO_STRING(key), cx);
			JSStringWrapper strWrapper2(JSVAL_TO_STRING(value), cx);

			ret->insert(std::map<std::string, std::string>::value_type(strWrapper.get(), strWrapper2.get()));
		}
		else if(JSVAL_IS_NUMBER(value))
		{
			double number = 0.0;
			JS::ToNumber(cx, value, &number);

			std::stringstream ss;
			ss << number;

			JSStringWrapper strWrapper(JSVAL_TO_STRING(key), cx);
			//JSStringWrapper strWrapper2(JSVAL_TO_STRING(value), cx);

			ret->insert(std::map<std::string, std::string>::value_type(strWrapper.get(), ss.str()));
		}
		else if(JSVAL_IS_BOOLEAN(value))
		{
			bool boolVal = JS::ToBoolean(value);
			JSStringWrapper strWrapper(JSVAL_TO_STRING(key), cx);
			//JSStringWrapper strWrapper2(JSVAL_TO_STRING(value), cx);
			std::string boolstring = boolVal ? "true" : "false";
			ret->insert(std::map<std::string, std::string>::value_type(strWrapper.get(), boolstring));
		}
	}

	return true;
}

void
gjs_log_object_props(JSContext      *context,
                     JSObject       *obj,
                     GjsDebugTopic   topic,
                     const char     *prefix)
{
    JSObject *props_iter;
    jsid prop_id;

    JS_BeginRequest(context);

    /* We potentially create new strings, plus the property iterator,
     * that could get collected as we go through this process. So
     * create a local root scope.
     */
    JS_EnterLocalRootScope(context);

    props_iter = JS_NewPropertyIterator(context, obj);
    if (props_iter == NULL) {
        gjs_debug(GJS_DEBUG_ERROR,
                  "Failed to create property iterator for object props");
        goto done;
    }

    prop_id = JSVAL_VOID;
    if (!JS_NextProperty(context, props_iter, &prop_id))
        goto done;

    while (prop_id != JSVAL_VOID) {
        jsval nameval;
        const char *name;
        jsval propval;

        if (!JS_IdToValue(context, prop_id, &nameval))
            goto next;

        if (!gjs_get_string_id(nameval, &name))
            goto next;

        if (!gjs_object_get_property(context, obj, name, &propval))
            goto next;

        gjs_debug(topic,
                  "%s%s = '%s'",
                  prefix, name,
                  gjs_value_debug_string(context, propval));

    next:
        prop_id = JSVAL_VOID;
        if (!JS_NextProperty(context, props_iter, &prop_id))
            break;
    }

 done:
    JS_LeaveLocalRootScope(context);
    JS_EndRequest(context);
}

static JSBool
lookup_static_member_by_id(JSContext *cx, JNIEnv *jEnv, JSObject *obj,
                           JavaClassDescriptor **class_descriptorp,
                           jsid id, JavaMemberDescriptor **memberp)
{
    jsval idval;
    JavaMemberDescriptor *member_descriptor;
    const char *member_name;
    JavaClassDescriptor *class_descriptor;

    class_descriptor = JS_GetPrivate(cx, obj);
    if (!class_descriptor) {
        *class_descriptorp = NULL;
        *memberp = NULL;
        return JS_TRUE;
    }
    
    if (class_descriptorp)
        *class_descriptorp = class_descriptor;
    
    member_descriptor = jsj_LookupJavaStaticMemberDescriptorById(cx, jEnv, class_descriptor, id);
    if (!member_descriptor) {
        JS_IdToValue(cx, id, &idval);
        if (!JSVAL_IS_STRING(idval)) {
            JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL, 
                                            JSJMSG_BAD_JCLASS_EXPR);
            return JS_FALSE;
        }

        member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
        
        /*
         * See if the property looks like the explicit resolution of an
         * overloaded method, e.g. "max(double,double)".
         */
        member_descriptor =
            jsj_ResolveExplicitMethod(cx, jEnv, class_descriptor, id, JS_TRUE);
        if (member_descriptor)
            goto done;

        /* Why do we have to do this ? */
        if (!strcmp(member_name, "prototype")) {
            *memberp = NULL;
            return JS_TRUE;
        }

        JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL, 
                        JSJMSG_MISSING_NAME,
                       class_descriptor->name, member_name);
        return JS_FALSE;
    }

done:
    if (memberp)
        *memberp = member_descriptor;
    return JS_TRUE;
}

JSBool
Dynamic_delete (JSContext* context, JSObject* owner, jsid id, jsval* value)
{
    jsval   name;
    CDHash* self = (CDHash*) JS_GetPrivate(context, owner);

    JS_IdToValue(context, id, &name);

    return JS_TRUE;
}

/**
 * Convert a JavaScript Object to a map
 *
 * @param cx the JavaScript context
 * @param t the JavaScript Object to convert
 * @return a new map containing the JavaScript Object
 */
map* mapFromJSObject(JSContext *cx,jsval t){
  map *res=NULL;
  JSIdArray *idp=JS_Enumerate(cx,JSVAL_TO_OBJECT(t));
#ifdef JS_DEBUG
  fprintf(stderr,"Properties %p\n",(void*)t);
#endif
  if(idp!=NULL) {
    int index;
    jsdouble argNum;
#ifdef JS_DEBUG
    fprintf(stderr,"Properties length :  %d \n",idp->length);
#endif
    for (index=0,argNum=idp->length;index<argNum;index++) { 
      jsval id = idp->vector[index];
      jsval vp;
      JS_IdToValue(cx,id,&vp);
      char *tmp, *tmp1;
      JSString *jsmsg,*jsmsg1;
      size_t len,len1;
      jsmsg = JS_ValueToString(cx,vp);
      len = JS_GetStringLength(jsmsg);
      jsval nvp;
      tmp=JS_EncodeString(cx,jsmsg);
      JS_GetProperty(cx, JSVAL_TO_OBJECT(t), tmp, &nvp);
      jsmsg1 = JS_ValueToString(cx,nvp);
      len1 = JS_GetStringLength(jsmsg1);
      tmp1=JS_EncodeString(cx,jsmsg1);
#ifdef JS_DEBUG
      fprintf(stderr,"Enumerate id : %d [ %s => %s ]\n",index,tmp,tmp1);
#endif
      if(strcasecmp(tmp,"child")!=0){
	if(res!=NULL){
#ifdef JS_DEBUG
	  fprintf(stderr,"%s - %s\n",tmp,tmp1);
#endif
	  addToMap(res,tmp,tmp1);
	}
	else{
	  res=createMap(tmp,tmp1);
	  res->next=NULL;
	}
      }
      free(tmp);
      free(tmp1);
#ifdef JS_DEBUG
      dumpMap(res);
#endif
    }
    JS_DestroyIdArray(cx,idp);
  }
#ifdef JS_DEBUG
  dumpMap(res);
#endif
  return res;
}

bool ScriptInterface::EnumeratePropertyNamesWithPrefix(JS::HandleValue objVal, const char* prefix, std::vector<std::string>& out)
{
	JSAutoRequest rq(m->m_cx);
	
	if (!objVal.isObjectOrNull())
	{
		LOGERROR("EnumeratePropertyNamesWithPrefix expected object type!");
		return false;
	}
		
	if(objVal.isNull())
		return true; // reached the end of the prototype chain
	
	JS::RootedObject obj(m->m_cx, &objVal.toObject());
	JS::RootedObject it(m->m_cx, JS_NewPropertyIterator(m->m_cx, obj));
	if (!it)
		return false;

	while (true)
	{
		JS::RootedId idp(m->m_cx);
		JS::RootedValue val(m->m_cx);
		if (! JS_NextProperty(m->m_cx, it, idp.address()) || ! JS_IdToValue(m->m_cx, idp, &val))
			return false;

		if (val.isUndefined())
			break; // end of iteration
		if (!val.isString())
			continue; // ignore integer properties

		JS::RootedString name(m->m_cx, val.toString());
		size_t len = strlen(prefix)+1;
		std::vector<char> buf(len);
		size_t prefixLen = strlen(prefix) * sizeof(char);
		JS_EncodeStringToBuffer(m->m_cx, name, &buf[0], prefixLen);
		buf[len-1]= '\0';
		if(0 == strcmp(&buf[0], prefix))
		{
			size_t len;
			const jschar* chars = JS_GetStringCharsAndLength(m->m_cx, name, &len);
			out.push_back(std::string(chars, chars+len));
		}
	}

	// Recurse up the prototype chain
	JS::RootedObject prototype(m->m_cx);
	if (JS_GetPrototype(m->m_cx, obj, &prototype))
	{
		JS::RootedValue prototypeVal(m->m_cx, JS::ObjectOrNullValue(prototype));
		if (! EnumeratePropertyNamesWithPrefix(prototypeVal, prefix, out))
			return false;
	}

	return true;
}

int
to_erl_object(ErlNifEnv* env, JSContext* cx, JSObject* obj, ERL_NIF_TERM* term)
{
    ERL_NIF_TERM* array = NULL;
    ERL_NIF_TERM list;
    ERL_NIF_TERM keyterm;
    ERL_NIF_TERM valterm;
    JSObject* iter;
    jsid idp;
    jsval val;
    int length;
    int index;
    int ret = ERROR;

    iter = JS_NewPropertyIterator(cx, obj);
    if(iter == NULL) goto done;

    length = 0;
    while(JS_NextProperty(cx, iter, &idp))
    {
        if(idp == JSID_VOID) break;
        length += 1;
    }
    
    array = enif_alloc(length * sizeof(ERL_NIF_TERM));
    if(array == NULL) goto done;
    
    iter = JS_NewPropertyIterator(cx, obj);
    if(iter == NULL) goto done;

    index = 0;
    while(JS_NextProperty(cx, iter, &idp))
    {
        if(idp == JSID_VOID)
        {
            list = enif_make_list_from_array(env, array, length);
            *term = enif_make_tuple1(env, list);
            ret = OK;
            goto done;
        }

        if(!JS_IdToValue(cx, idp, &val)) goto done;
        if(!to_erl_string(env, cx, val, &keyterm)) goto done;
        if(!JS_GetPropertyById(cx, obj, idp, &val)) goto done;
        if(!to_erl_intern(env, cx, val, &valterm)) goto done;
        
        array[index] = enif_make_tuple2(env, keyterm, valterm);
        index += 1;
    }

done:
    if(array != NULL) enif_free(array);
    return ret;
}

    BSONObj toObject( JSObject * o , int depth = 0) {
        if ( ! o )
            return BSONObj();

        if ( JS_InstanceOf( _context , o , &bson_ro_class , 0 ) ) {
            BSONHolder * holder = GETHOLDER( _context , o );
            assert( holder );
            return holder->_obj.getOwned();
        }

        BSONObj orig;
        if ( JS_InstanceOf( _context , o , &bson_class , 0 ) ) {
            BSONHolder * holder = GETHOLDER(_context,o);
            assert( holder );
            if ( ! holder->_modified ) {
                return holder->_obj;
            }
            orig = holder->_obj;
        }

        BSONObjBuilder b;

        if ( ! appendSpecialDBObject( this , b , "value" , OBJECT_TO_JSVAL( o ) , o ) ) {

            if ( depth == 0 ) {
                jsval theid = getProperty( o , "_id" );
                if ( ! JSVAL_IS_VOID( theid ) ) {
                    append( b , "_id" , theid , EOO , depth + 1 );
                }
            }

            JSIdArray * properties = JS_Enumerate( _context , o );
            assert( properties );

            for ( jsint i=0; i<properties->length; i++ ) {
                jsid id = properties->vector[i];
                jsval nameval;
                assert( JS_IdToValue( _context ,id , &nameval ) );
                string name = toString( nameval );
                if ( depth == 0 && name == "_id" )
                    continue;

                append( b , name , getProperty( o , name.c_str() ) , orig[name].type() , depth + 1 );
            }

            JS_DestroyIdArray( _context , properties );
        }

        return b.obj();
    }

bool jsval_to_std_map_string_string(JSContext *cx, jsval v, std::map<std::string, std::string>* ret)
{
    if (JSVAL_IS_NULL(v) || JSVAL_IS_VOID(v))
    {
        return true;
    }
    
    JSObject* tmp = JSVAL_TO_OBJECT(v);
    if (!tmp) {
        CCLOG("%s", "jsval_to_ccvaluemap: the jsval is not an object.");
        return false;
    }
    
    JSObject* it = JS_NewPropertyIterator(cx, tmp);
    
    while (true)
    {
        jsid idp;
        jsval key;
        if (! JS_NextProperty(cx, it, &idp) || ! JS_IdToValue(cx, idp, &key)) {
            return false; // error
        }
        
        if (key == JSVAL_VOID) {
            break; // end of iteration
        }
        
        if (!JSVAL_IS_STRING(key)) {
            continue; // ignore integer properties
        }
        
        JSStringWrapper keyWrapper(JSVAL_TO_STRING(key), cx);
        
        JS::RootedValue value(cx);
        JS_GetPropertyById(cx, tmp, idp, &value);
        if (value.isString())
        {
            JSStringWrapper valueWapper(JSVAL_TO_STRING(value), cx);
            ret->insert(std::make_pair(keyWrapper.get(), valueWapper.get()));
        }
        else
        {
            CCASSERT(false, "not a string");
        }
    }
        
    return true;
}

JavaClass_setPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
    jclass java_class;
    const char *member_name;
    JavaClassDescriptor *class_descriptor;
    JavaMemberDescriptor *member_descriptor;
    jsval idval;
    JNIEnv *jEnv;
    JSJavaThreadState *jsj_env;
    JSBool result;

    /* printf("In JavaClass_setProperty\n"); */

    /* Get the Java per-thread environment pointer for this JSContext */
    jsj_env = jsj_EnterJava(cx, &jEnv);
    if (!jEnv)
        return JS_FALSE;
    
    if (!lookup_static_member_by_id(cx, jEnv, obj, &class_descriptor, id, &member_descriptor)) {
	jsj_ExitJava(jsj_env);
        return JS_FALSE;
    }

    /* Check for the case where there is a method with the given name, but no field
       with that name */
    if (!member_descriptor->field)
        goto no_such_field;

    /* Silently fail if field value is final (immutable), as required by ECMA spec */
    if (member_descriptor->field->modifiers & ACC_FINAL) {
	jsj_ExitJava(jsj_env);
        return JS_TRUE;
    }

    java_class = class_descriptor->java_class;
    result = jsj_SetJavaFieldValue(cx, jEnv, member_descriptor->field, java_class, *vp);
    jsj_ExitJava(jsj_env);
    return result;

no_such_field:
    JS_IdToValue(cx, id, &idval);
    member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
    JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL, 
                   JSJMSG_MISSING_STATIC,
                   member_name, class_descriptor->name);
    jsj_ExitJava(jsj_env);
    return JS_FALSE;
}

/**
 * gjs_get_string_id:
 * @context: a #JSContext
 * @id: a jsid that is an object hash key (could be an int or string)
 * @name_p place to store ASCII string version of key
 *
 * If the id is not a string ID, return false and set *name_p to %NULL.
 * Otherwise, return true and fill in *name_p with ASCII name of id.
 *
 * Returns: true if *name_p is non-%NULL
 **/
bool
gjs_get_string_id (JSContext       *context,
                   jsid             id,
                   char           **name_p)
{
    JS::RootedValue id_val(context);

    if (!JS_IdToValue(context, id, &id_val))
        return false;

    if (id_val.isString()) {
        return gjs_string_to_utf8(context, id_val, name_p);
    } else {
        *name_p = NULL;
        return false;
    }
}

static JSBool js_set(JSContext *cx, JSObject *obj, jsid id, JSBool strict, jsval *vp)
{
	jsval idval;
    jsint			tiny;
	js_callback_t*	cb;

	if((cb=(js_callback_t*)JS_GetPrivate(cx,obj))==NULL)
		return(JS_FALSE);

    JS_IdToValue(cx, id, &idval);
    tiny = JSVAL_TO_INT(idval);

	switch(tiny) {
		case PROP_TERMINATED:
			if(cb->terminated!=NULL)
				JS_ValueToBoolean(cx, *vp, (int *)cb->terminated);
			break;
		case PROP_AUTO_TERMINATE:
			JS_ValueToBoolean(cx,*vp,&cb->auto_terminate);
			break;
		case PROP_COUNTER:
			if(!JS_ValueToInt32(cx, *vp, (int32*)&cb->counter))
				return JS_FALSE;
			break;
		case PROP_TIME_LIMIT:
			if(!JS_ValueToInt32(cx, *vp, (int32*)&cb->limit))
				return JS_FALSE;
			break;
		case PROP_GC_INTERVAL:
			if(!JS_ValueToInt32(cx, *vp, (int32*)&cb->gc_interval))
				return JS_FALSE;
			break;
		case PROP_YIELD_INTERVAL:
			if(!JS_ValueToInt32(cx, *vp, (int32*)&cb->yield_interval))
				return JS_FALSE;
			break;
#ifdef jscntxt_h___
		case PROP_MAXBYTES:
			if(!JS_ValueToInt32(cx, *vp, (int32*)&cx->runtime->gcMaxBytes))
				return JS_FALSE;
			break;
#endif
	}

	return(JS_TRUE);
}

static JSBool js_client_get(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
	jsval idval;
	const char*	p=NULL;
	int32		val=0;
    jsint       tiny;
	JSString*	js_str;
	client_t*	client;

	if((client=(client_t*)JS_GetPrivate(cx,obj))==NULL)
		return(JS_FALSE);

    JS_IdToValue(cx, id, &idval);
    tiny = JSVAL_TO_INT(idval);

	switch(tiny) {
		case CLIENT_PROP_ADDR: 
			p=client->addr;
			break;
		case CLIENT_PROP_HOST:
			p=client->host;
			break;
		case CLIENT_PROP_PORT:
			val=client->port;
			break;
		case CLIENT_PROP_TIME:
			val=(int32)client->time;
			break;
		case CLIENT_PROP_PROTOCOL:
			p=(char*)client->protocol;
			break;
		case CLIENT_PROP_USER:
			p=client->user;
			break;
		default:
			return(JS_TRUE);
	}
	if(p!=NULL) {
		if((js_str=JS_NewStringCopyZ(cx, p))==NULL)
			return(JS_FALSE);
		*vp = STRING_TO_JSVAL(js_str);
	} else
		*vp = INT_TO_JSVAL(val);

	return(JS_TRUE);
}