type_abstract.cc

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/*!
 *
 * Copyright (C) 2015 Technical University of Liberec.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 3 as published by the
 * Free Software Foundation. (http://www.gnu.org/licenses/gpl-3.0.en.html)
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 *
 * @file    type_abstract.cc
 * @brief
 */

#include "input_type.hh"
#include "type_repository.hh"
#include "attribute_lib.hh"

#include "system/system.hh"
#include "input/storage.hh"
#include <boost/functional/hash.hpp>

#include <stddef.h>                                    // for NULL
#include <algorithm>                                   // for find
//

#include <boost/functional/hash/hash.hpp>              // for hash_combine
#include <map>                                         // for _Rb_tree_iterator
#include <memory>                                      // for shared_ptr
#include <string>                                      // for basic_string
#include <utility>                                     // for make_pair, pair
#include <vector>                                      // for vector
#include "input/storage.hh"                            // for StorageBase
#include "input/type_abstract.hh"                      // for Abstract, Abst...
#include "input/type_base.hh"                          // for ExcWrongDefault
#include "input/type_generic.hh"                       // for ExcGenericWith...
#include "input/type_record.hh"                        // for Record, Default
#include "input/type_selection.hh"                     // for Selection
#include "system/asserts.hh"                           // for Assert, ASSERT
#include "system/exceptions.hh"                        // for ExcGenericWith...



namespace Input {
namespace Type {

using namespace std;


/************************************************
 * implementation of Abstract
 */

Abstract::Abstract()
: child_data_( std::make_shared<ChildData>( "EmptyAbstract", "" ) )
{
    close();
    finish();
}



Abstract::Abstract(const Abstract& other)
: TypeBase( other ), child_data_(other.child_data_)
{}



Abstract::Abstract(const string & type_name_in, const string & description)
: child_data_( std::make_shared<ChildData>( type_name_in, description ) )
{}


TypeBase::TypeHash Abstract::content_hash() const
{
    TypeHash seed=0;
    boost::hash_combine(seed, "Abstract");
    boost::hash_combine(seed, type_name());
    boost::hash_combine(seed, child_data_->description_);
    for (auto &param : parameter_map_) {
        boost::hash_combine(seed, param.first );
        boost::hash_combine(seed, param.second );
    }
    boost::hash_combine(seed, this->generic_type_hash_);
    //boost::hash_combine(seed, child_data_->generic_content_hash_);
    //for( Record &key : child_data_->list_of_childs) {
    //    boost::hash_combine(seed, key.content_hash() );
    //}
    return seed;
}



Abstract & Abstract::allow_auto_conversion(const string &type_default) {
    ASSERT(!child_data_->closed_)(type_name()).error("Can not specify default value for TYPE key as the Abstract is closed.");
    child_data_->selection_default_=Default("\""+type_default+"\""); // default record is closed; other constructor creates the zero item
    return *this;
}



const Record  & Abstract::get_descendant(const string& name) const
{
    ASSERT(child_data_->selection_of_childs->is_finished()).error();
    return child_data_->list_of_childs[ child_data_->selection_of_childs->name_to_int(name) ];
}



const Record * Abstract::get_default_descendant() const {
    if ( have_default_descendant() ) {
        int sel_val = child_data_->selection_default_.get_storage( child_data_->selection_of_childs )->get_int();
        return &( get_descendant( child_data_->selection_of_childs->int_to_name(sel_val) ) );
    }
    return NULL;
}



const Selection  & Abstract::get_type_selection() const
{
    return * child_data_->selection_of_childs;
}


unsigned int Abstract::child_size() const {
    return child_data_->list_of_childs.size();
}


int Abstract::add_child(Record &subrec)
{
    ASSERT(child_data_->closed_).error();

    if (std::find(child_data_->list_of_childs.begin(), child_data_->list_of_childs.end(), subrec) == child_data_->list_of_childs.end()) {
        child_data_->selection_of_childs->add_value(child_data_->list_of_childs.size(), subrec.type_name());
        child_data_->list_of_childs.push_back(subrec);
    }

    subrec.derive_from(*this);

    return 1;
}


FinishStatus Abstract::finish(FinishStatus finish_type) {
    ASSERT(finish_type != FinishStatus::none_).error();
    ASSERT(finish_type != FinishStatus::in_perform_).error();
    ASSERT(child_data_->finish_status_ != FinishStatus::in_perform_)(this->type_name()).error("Recursion in the IST element of type Abstract.");

    if (this->is_finished()) return child_data_->finish_status_;

    ASSERT(child_data_->closed_)(this->type_name()).error();

    child_data_->selection_of_childs->close();
    child_data_->selection_of_childs->finish();

    child_data_->finish_status_ = FinishStatus::in_perform_;

    for (auto &child : child_data_->list_of_childs) {
        if ((finish_type != FinishStatus::generic_) && child.is_root_of_generic_subtree())
            THROW( ExcGenericWithoutInstance() << EI_Object(child.type_name()) );
        child.finish(finish_type);
        ASSERT(child.is_finished()).error();
    }

    // check validity of possible default value of TYPE key
    if ( have_default_descendant() ) {
        try {
            child_data_->selection_default_.check_validity(child_data_->selection_of_childs);
        } catch (ExcWrongDefault & e) {
            e << EI_Desc("Default value for TYPE key do not match any descendant of Abstract.")
              << EI_DefaultStr( child_data_->selection_default_.value() ) << EI_TypeName(this->type_name());
            throw;
        } catch (ExcWrongDefaultJSON & e) {
            e << EI_DefaultStr( child_data_->selection_default_.value() ) << EI_TypeName(this->type_name());
            throw;
        }
    }

    child_data_->finish_status_ = finish_type;

    return (child_data_->finish_status_);
}


Abstract &Abstract::close() {
    child_data_->closed_=true;
    return *( Input::TypeRepository<Abstract>::get_instance().add_type( *this ) );
}


FinishStatus Abstract::finish_status() const {
    return child_data_->finish_status_;
}


bool Abstract::is_finished() const {
    return (child_data_->finish_status_ != FinishStatus::none_) && (child_data_->finish_status_ != FinishStatus::in_perform_);
}


bool Abstract::is_closed() const {
    return child_data_->closed_;
}


string Abstract::type_name() const {
    return child_data_->type_name_;
}


string Abstract::class_name() const {
    return "Abstract";
}


Default &Abstract::get_selection_default() const {
    return child_data_->selection_default_;
}

bool Abstract::have_default_descendant() const {
    // obligatory value if default is not set, see @p selection_default_
    if ( !child_data_->selection_default_.is_obligatory() )  {
        if ( child_data_->selection_default_.has_value_at_declaration() ) {
            return true;
        }
    }
    return false;
}



TypeBase::MakeInstanceReturnType Abstract::make_instance(std::vector<ParameterPair> vec) {
    Abstract abstract = this->deep_copy();
    ParameterMap parameter_map;


    // Set close flag - add_child method required closed child_data
    abstract.child_data_->closed_ = true;
    // make instances of all descendant records and add them into instance of abstract
    for (auto &child : child_data_->list_of_childs) {
        MakeInstanceReturnType inst = child.make_instance(vec);
        abstract.add_child( static_cast<Record &>( *(inst.first) ) );
        ParameterMap other_map = inst.second;
        parameter_map.insert(other_map.begin(), other_map.end());
    }
    // Unset close flag - necessary for set parameters
    abstract.child_data_->closed_ = false;

    // Set parameters and generic type as attributes
    abstract.parameter_map_ = parameter_map;
    abstract.generic_type_hash_ = this->content_hash();
    TypeBase::set_generic_attributes(parameter_map);

    return std::make_pair( std::make_shared<Abstract>(abstract.close()), parameter_map );
}


Abstract Abstract::deep_copy() const {
    Abstract abstract = Abstract();
    abstract.child_data_ =  std::make_shared<Abstract::ChildData>(*this->child_data_);
    abstract.child_data_->closed_ = false;
    abstract.child_data_->finish_status_ = FinishStatus::none_;
    abstract.child_data_->list_of_childs.clear();
    abstract.child_data_->selection_of_childs = std::make_shared<Selection>(this->type_name() + "_TYPE_selection");
    abstract.copy_attributes(*attributes_);

    abstract.generic_type_hash_ = this->generic_type_hash_;
    abstract.parameter_map_ = this->parameter_map_;
    return abstract;
}


Abstract &Abstract::root_of_generic_subtree() {
    root_of_generic_subtree_ = true;
    return *this;
}


Abstract &Abstract::add_attribute(std::string key, TypeBase::json_string value) {
    this->add_attribute_(key, value);
    return *this;
}



/*Abstract &Abstract::set_generic_content_hash(TypeHash generic_content_hash) {
    child_data_->generic_content_hash_ = generic_content_hash;
    return *this;
}*/


Abstract::ChildDataIter Abstract::begin_child_data() const {
    return child_data_->list_of_childs.begin();
}

Abstract::ChildDataIter Abstract::end_child_data() const {
    return child_data_->list_of_childs.end();
}


Abstract::ChildData::ChildData(const string &name, const string &description)
: selection_of_childs( std::make_shared<Selection> (name + "_TYPE_selection") ),
  description_(description),
  type_name_(name),
  finish_status_(FinishStatus::none_),
  closed_(false),
  selection_default_(Default::obligatory())
{}


/************************************************
 * implementation of AdHocAbstract
 */

AdHocAbstract::AdHocAbstract(const Abstract &ancestor)
: Abstract("Derived AdHocAbstract", "This description doesn't have print out."),
  ancestor_(ancestor)
{
    //test default descendant of ancestor
    const Record * default_desc = ancestor.get_default_descendant();
    if (default_desc) {
        allow_auto_conversion( default_desc->type_name() );
    }

    this->close();

}


AdHocAbstract &AdHocAbstract::add_child(Record &subrec)
{
    Abstract::add_child(subrec);

    return *this;
}


FinishStatus AdHocAbstract::finish(FinishStatus finish_type)
{
    if (this->is_finished()) return child_data_->finish_status_;

    const_cast<Abstract &>(ancestor_).finish(finish_type);

    //test default descendant of ancestor
    const Record * default_desc = ancestor_.get_default_descendant();
    if (default_desc) {
        allow_auto_conversion( default_desc->type_name() );
    }

    for (Abstract::ChildDataIter it = ancestor_.child_data_->list_of_childs.begin(); it != ancestor_.child_data_->list_of_childs.end(); ++it) {
        child_data_->selection_of_childs->add_value(child_data_->list_of_childs.size(), (*it).type_name());
        child_data_->list_of_childs.push_back(*it);
    }

    return Abstract::finish(finish_type);
}


TypeBase::TypeHash AdHocAbstract::content_hash() const {
    TypeHash seed=0;
    boost::hash_combine(seed, "AdHocAbstract");
    boost::hash_combine(seed, type_name());
    boost::hash_combine(seed, child_data_->description_);
    boost::hash_combine(seed, ancestor_.type_name());

    return seed;
}


string AdHocAbstract::class_name() const {
    return "AdHocAbstract";
}



} // closing namespace Type
} // closing namespace Input