/usr/include/xmltooling/util/Predicates.h is in libxmltooling-dev 1.6.4-1ubuntu2.
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* Licensed to the University Corporation for Advanced Internet
* Development, Inc. (UCAID) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*
* UCAID 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.
*/
/**
* @file xmltooling/util/Predicates.h
*
* Useful XMLObject predicates for use with STL algorithms.
*/
#ifndef __xmltooling_predicates_h__
#define __xmltooling_predicates_h__
#include <xmltooling/QName.h>
#include <xmltooling/XMLObject.h>
#include <functional>
namespace xmltooling {
/**
* Predicate that checks the QName of an XMLObject.
*/
class hasQName
{
public:
/**
* Constructor.
*
* @param q the QName to check for
*/
hasQName(const QName& q) : m_q(q) {
}
/**
* Returns true iff the provided object's QName matches the constructor argument.
*
* @param xmlObject the object to examine
*/
bool operator()(const XMLObject* xmlObject) const {
return xmlObject ? (xmlObject->getElementQName() == m_q) : false;
}
private:
const QName& m_q;
};
/**
* Predicate that checks the xsi:type of an XMLObject.
*/
class hasSchemaType
{
public:
/**
* Constructor.
*
* @param q the QName to check for
*/
hasSchemaType(const QName& q) : m_q(q) {
}
/**
* Returns true iff the provided object's xsi:type matches the constructor argument.
*
* @param xmlObject the object to examine
*/
bool operator()(const XMLObject* xmlObject) const {
const QName* xsitype = xmlObject ? xmlObject->getSchemaType() : nullptr;
return xsitype ? (*xsitype == m_q) : false;
}
private:
const QName& m_q;
};
/**
* Template algorithm returns first pointer element from a container that matches a predicate.
*
* @param c read-only container of pointer-based objects
* @param p a predicate function
* @return the first object in the container matching the predicate, or nullptr
*/
template<typename Container, typename Predicate>
typename Container::value_type find_if(const Container& c, const Predicate& p) {
typename Container::const_iterator i = std::find_if(c.begin(), c.end(), p);
return (i!=c.end()) ? *i : nullptr;
}
/**
* Template algorithm returns first pointer element from a container that matches a predicate.
*
* @param c read-only container of pointer-based objects
* @param p a predicate function
* @return the first object in the container matching the predicate, or nullptr
*/
template<typename Container, typename Predicate>
typename Container::value_type find_if(Container& c, const Predicate& p) {
typename Container::iterator i = std::find_if(c.begin(), c.end(), p);
return (i!=c.end()) ? *i : nullptr;
}
};
#endif /* __xmltooling_predicates_h__ */
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