ReferenceMap.h

/*
 
MIT License
 
Copyright (c) 2017 FMI Open Development / Markus Peura, first.last@fmi.fi
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 
*/
/*
Part of Rack development has been done in the BALTRAD projects part-financed
by the European Union (European Regional Development Fund and European
Neighbourhood Partnership Instrument, Baltic Sea Region Programme 2007-2013)
*/
//#include <typeinfo>
#include <drain/Log.h>
#include <stdexcept>
//#include <iostream>
//#include <vector>
#include <string>
 
#include <map>
#include <list>
 
 
#include <drain/Reference.h>
#include <drain/String.h>
 
#include "Range.h"
// #include "FlexibleVariable.h"
//#include "ReferenceVariable.h"
 
#include "SmartMap.h"
 
 
#ifndef REFERENCE_MAP
#define REFERENCE_MAP
 
 
namespace drain {
 
 
template <class T=Reference>
class ReferenceMap2 : public SmartMap<T> {
 
public:
 
    typedef T ref_t;
    typedef SmartMap<T> map_t;
 
 
 
    template <class F>
    inline
    ref_t & link(const std::string & key, F &x){
 
        ref_t & r = (*this)[key];
        r.link(x); // .setSeparator(this->arraySeparator);
        return r;
 
    }
 
    inline
    ref_t  & link(const std::string & key, void *ptr, const std::type_info &type, size_t count=1){
 
        ref_t & r = (*this)[key];
        r.link(ptr, type, count);
        return r;
 
        /*
        if (this->find(key) == this->end()) // not  already referenced
            this->keyList.push_back(key);
 
        Reference & r = map_t::operator[](key);
        r.setSeparator(this->arraySeparator); // applicable, if array type element
        r.link(ptr, type, count);
        // unitMap[key] = unit;
        return r;
        */
    }
 
    inline
    void unlink(const std::string & key){
        map_t::erase(key);
        for (std::list<std::string>::iterator it = this->keyList.begin(); it != this->keyList.end(); ++it){
            if (*it == key){
                this->keyList.erase(it);
                break;
            }
        }
        //unitMap.erase(key);
    }
 
 
    typedef enum {
        LINK,    
        SKIP,    
        RESERVE, 
        ERROR    
    } extLinkPolicy;
 
 
    template <class T2>
    //static  // Start with T. Todo: consider other
    void copyStruct(const ReferenceMap2<T> & m, const T2 & src, T2 & dst, extLinkPolicy policy=RESERVE) {
        //, bool copyValues = true, bool linkExternal = false){
 
        Logger mout(__FILE__, __FUNCTION__);
        long s = sizeof(T2); // yes signed
        //mout.warn("experimental, obj.size=" , s );
 
        // Clearing is bad, it resets work of base class constructors
        // if (policy==LINK)
        //  clear();
 
        typedef unsigned long addr_t;
        typedef          long addr_diff_t;
 
        const addr_t srcAddr = (addr_t)(&src);
        const addr_t dstAddr = (addr_t)(&dst);
        //for (std::list<std::string>::const_iterator it = m.getKeyList().begin(); it != m.getKeyList().end(); ++it){
        for (const std::string & key: m.getKeyList()){
            // const std::string & key = *it;
            const ref_t & srcRef = m[key];
            addr_t srcVarAddr = (addr_t)srcRef.getPtr();
            addr_diff_t relativeAddr = srcVarAddr - srcAddr;
            if ((relativeAddr >= 0) && (relativeAddr < s)){ // INTERNAL
                //Reference & dstMemberRef = (*this)[key];
                ref_t & dstMemberRef = link(key, (void *)(dstAddr + relativeAddr), srcRef.getType(), srcRef.getElementCount());
                //mout.warn("local: " , key , ':' , srcRef.getElementCount() );
                dstMemberRef.copyFormat(srcRef);
                dstMemberRef.assignCastable(srcRef); // value
            }
            else {
                //mout.warn("external: " , key     );
                switch (policy) {
                case LINK:
                    link(key, (void *)srcVarAddr, srcRef.getType(), srcRef.getElementCount()).copyFormat(srcRef);
                    break;
                case RESERVE:
                    // reserve(key);
                    (*this)[key];
                    //mout.warn("reserved: " , key     );
                    //mout.warn("keyList:  " , getKeys() );
                    break;
                case SKIP:
                    mout.debug("skipping external variable: '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                    break;
                case ERROR:
                    mout.error("external variable: '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                    break;
                default:
                    mout.warn("unknown enum option in handling external variable '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                }
            }
        }
    }
};
 
 
 
// TODO: consider clear() (shallow op)
class ReferenceMap : public SmartMap<Reference> {//public std::map<std::string,Reference> {
 
public:
 
 
    // ReferenceMap(bool ordered, char separator) : SmartMap<Reference>(ordered, separator){}; //, STRICTLY_CLOSED, keys(orderedKeyList), units(unitMap)
    ReferenceMap(char separator=',') : SmartMap<Reference>(separator){}; //, STRICTLY_CLOSED, keys(orderedKeyList), units(unitMap)
 
    inline
    ReferenceMap(const ReferenceMap & rmap): SmartMap<Reference>(rmap.separator, rmap.arraySeparator){
    };
 
    inline virtual
    ~ReferenceMap(){};
 
    // Temporary catch for Range
    template <class F>
    Reference & link(const std::string & key, Range<F> &x, const std::string & unit = std::string()){
        Logger mout(__FILE__, __FUNCTION__);
        mout.deprecating(" type drain::Range<>  use .tuple() instead: ", key, '[', unit, ']');
        return link(key, &x, typeid(F), 2, unit);
    }
 
 
    template <class F>
    Reference & link(const std::string & key, F &x, const std::string & unit = std::string()){
 
        if (find(key) == end()){ // not  already referenced
 
            if (keyList.empty()){
                if (key.empty()){
                    std::cerr << "empty key referencing to " << x << " unit=" << unit << std::endl;
                }
                else if (key.at(0) == '_'){
                    throw std::runtime_error(key + ": hidden parameters can be added only after visible");
                }
            }
            else if ((keyList.back().at(0) == '_') && (key.at(0) != '_')){
                throw std::runtime_error(key + ": cannot add visible parameters after hidden");
            }
 
 
            keyList.push_back(key);
 
        }
 
        // Create
        Reference & r = std::map<std::string,Reference>::operator[](key);
        r.setSeparator(arraySeparator); // applicable, if array type element
        // Link
        r.link(x);
        unitMap[key] = unit;
        return r;
    }
 
    inline
    Reference & link(const std::string & key, Reference &x, const std::string & unit = std::string()){
        return link(key, x.getPtr(), x.getType(), x.getElementCount(), unit); //.fillArray = item.fillArray;
    }
 
 
    inline
    Reference & link(const std::string & key, void *ptr, const std::type_info &type, size_t count, const std::string & unit = std::string()){
 
        if (find(key) == end()) // not  already referenced
            keyList.push_back(key);
 
        Reference & r = std::map<std::string,Reference>::operator[](key);
        r.setSeparator(arraySeparator); // applicable, if array type element
        r.link(ptr, type, count);
        unitMap[key] = unit;
        return r;
 
    }
 
    inline
    Reference & link(const std::string & key, void *ptr, const std::type_info &type, const std::string & unit = std::string()){
        return link(key, ptr, type, 1, unit);
    }
 
 
    template <class F>
    Reference & referenceTop(const std::string & key, F &x, const std::string & unit = std::string()){
 
        if (find(key) != end()) // already referenced
            keyList.push_front(key);
 
        //Reference & r = std::map<std::string,Reference>::operator[](key).link(x);
        Reference & r = std::map<std::string,Reference>::operator[](key);
        r.setSeparator(arraySeparator); // applicable, if array type element
        // Link
        r.link(x);
 
        unitMap[key] = unit;
        return r;
    }
 
 
    void append(ReferenceMap & rMap, bool replace=true){
        //std::cerr << __FILE__ << " -> " << __FUNCTION__ <<  std::endl;
        const std::list<std::string> & keys = rMap.getKeyList();
        //for (std::list<std::string>::const_iterator it = keys.begin(); it != keys.end(); ++it){
        for (const std::string & key: keys){
            //std::cerr << " -> " << *it <<  std::endl;
            if (replace || !hasKey(key)){
                Reference & srcItem = rMap[key];
                Reference & item = link(key, srcItem, rMap.unitMap[key]); //.fillArray = item.fillArray;
                // Reference & item = link(key, (const Castable &)srcItem, rMap.unitMap[key]); //.fillArray = item.fillArray;
                // Reference & item = link(key, srcItem.getPtr(), srcItem.getType(), srcItem.getElementCount(), rMap.unitMap[key]); //.fillArray = item.fillArray;
                item.setFill(srcItem.fillArray);
                item.setInputSeparator(srcItem.getInputSeparator());
                item.setOutputSeparator(srcItem.getOutputSeparator());
            }
        }
    }
 
    // todo: consider NULL? (but leads to problems)
 
    inline
    void delink(const std::string & key){
        std::map<std::string,Reference>::erase(key);
        for (std::list<std::string>::iterator it = keyList.begin(); it != keyList.end(); ++it)
            if (*it == key){
                keyList.erase(it);
                break;
            }
        unitMap.erase(key);
    }
 
 
    void reserve(const std::string & key){
 
        if (find(key) == end()) // not  already referenced
            keyList.push_back(key);
 
        // Create
        // Reference & r =
        std::map<std::string,Reference>::operator[](key);
        // Now r type is unset. (ptr undefined)
 
    }
 
 
    virtual inline
    void clear(){
        SmartMap<Reference>::clear();
        keyList.clear();
        unitMap.clear();
    }
 
    typedef enum {
        LINK,    
        RESERVE, 
        SKIP,    
        ERROR    
    } extLinkPolicy;
 
 
    template <class T>
    void copyStruct(const ReferenceMap & m, const T & src, T & dst, extLinkPolicy policy=RESERVE) {
        //, bool copyValues = true, bool linkExternal = false){
 
        Logger mout(__FILE__, __FUNCTION__);
        long s = sizeof(T); // yes signed
        //mout.warn("experimental, obj.size=" , s );
 
        // Clearing is bad, it resets work of base class constructors
        // if (policy==LINK)
        //  clear();
 
        typedef unsigned long addr_t;
        typedef          long addr_diff_t;
 
        const addr_t srcAddr = (addr_t)(&src);
        const addr_t dstAddr = (addr_t)(&dst);
        //for (std::list<std::string>::const_iterator it = m.getKeyList().begin(); it != m.getKeyList().end(); ++it){
        for (const std::string & key: m.getKeyList()){
            // const std::string & key = *it;
            const Reference & srcRef = m[key];
            addr_t srcVarAddr = (addr_t)srcRef.getPtr();
            addr_diff_t relativeAddr = srcVarAddr - srcAddr;
            if ((relativeAddr >= 0) && (relativeAddr < s)){ // INTERNAL
                Reference & dstMemberRef = link(key, (void *)(dstAddr + relativeAddr), srcRef.getType(), srcRef.getElementCount());
                //mout.warn("local: " , key , ':' , srcRef.getElementCount() );
                dstMemberRef.copyFormat(srcRef);
                dstMemberRef = srcRef; // value
                //dstMemberRef.setInputSeparator(srcRef.getInputSeparator());
            }
            else {
                //mout.warn("external: " , key     );
                switch (policy) {
                case LINK:
                    link(key, (void *)srcVarAddr, srcRef.getType(), srcRef.getElementCount()).copyFormat(srcRef);
                    break;
                case RESERVE:
                    reserve(key);
                    //mout.warn("reserved: " , key     );
                    //mout.warn("keyList:  " , getKeys() );
                    break;
                case SKIP:
                    mout.debug("skipping external variable: '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                    break;
                case ERROR:
                    mout.error("external variable: '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                    break;
                default:
                    mout.warn("unknown enum option in handling external variable '" , key , '=' , srcRef , "' relative addr=" , relativeAddr );
                }
            }
        }
 
        // Shared properties.
        //keyList = m.keyList;
        separator = m.separator;
        arraySeparator = m.arraySeparator;
        unitMap = m.unitMap;
 
    }
 
 
    template <class T>
    inline
    ReferenceMap & operator=(const SmartMap<T> & v){
        //Logger log(__FILE__, __FUNCTION__);
        //log.error() << "in:" << v << log.endl;
        importMap(v);
        return *this;
    }
 
    virtual
    mapped_type & operator[](const std::string &key){
 
        Logger mout(__FILE__, __FUNCTION__);
 
        iterator it = this->find(key);
        if (it != this->end()) {
            return it->second;
        }
        else {
            mout.warn("current contents: " , *this );
 
            mout.error("key '" , key ,"' not declared (referenced)" );
            //throw std::runtime_error(key + ": ReferenceMap & operator[] : key not found");
            static mapped_type empty;
            return empty;
        }
 
    }
 
    virtual
    const mapped_type & operator[](const std::string &key) const {
 
        Logger mout(__FILE__, __FUNCTION__); //Logger mout(__FILE__, __FUNCTION__);
 
        const_iterator it = this->find(key);
        if (it != this->end()) {
            return it->second;
        }
        else {
            mout.error("key '" , key ,"' not declared (referenced)" );
            //throw std::runtime_error(key + ": ReferenceMap & operator[] : key not found");
            static const mapped_type empty;
            return empty;
        }
    }
 
    typedef std::map<std::string,std::string> unitmap_t;
 
    inline
    const unitmap_t & getUnitMap() const { return unitMap; };
 
    /*
    template <class T>
    static
    size_t serialize(const SmartMap<T> & rmap, std::vector<char> & memory);
    */
 
 
protected:
 
    // Questionable: consider SmartReference etc. with caster and unit info?
    unitmap_t unitMap;
 
 
};
 
/*
template <class T>
size_t ReferenceMap::serialize(const SmartMap<T> & smap, std::vector<char> & memory){
 
    typedef SmartMap<T> smap_t;
 
    size_t i;
    for (smap_t::const_iterator it = smap.begin(); it != smap.end(); ++it){
 
        const std::string & key = it->first;
        const Castable & value  = it->second;
 
        if (v.isString()){
 
 
        }
        else {
        }
 
    }
 
}
*/
 
}  // namespace drain
 
 
#endif
 
// Drain