/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
parcel Lucy;
/** Private utility class.
*/
class Lucy::Search::QueryParser::ParserElem inherits Clownfish::Obj {
uint32_t type;
uint32_t occur;
Obj *value;
inert incremented ParserElem*
new(uint32_t type, decremented Obj *value = NULL);
inert ParserElem*
init(ParserElem *self, uint32_t type, decremented Obj *value = NULL);
public void
Destroy(ParserElem *self);
void
Set_Value(ParserElem *self, Obj *value);
/** Return the value of the elem if it matches the specification, NULL
* otherwise.
*/
nullable Obj*
As(ParserElem *self, Class *klass);
uint32_t
Get_Type(ParserElem *self);
/** Manipulate the value of <code>occur</code> so that the element becomes
* forbidden.
*/
void
Negate(ParserElem *self);
/** Manipulate the value of <code>occur</code> so that the element becomes
* required.
*/
void
Require(ParserElem *self);
/** If an element is required, make it optional. If it's negated, leave
* it as is.
*/
void
Unrequire(ParserElem *self);
/** Return true if the element MUST be present.
*/
bool
Required(ParserElem *self);
/** Return true if the element SHOULD be present.
*/
bool
Optional(ParserElem *self);
/** Return true if the element MUST NOT be present.
*/
bool
Negated(ParserElem *self);
}