/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#include <sal/config.h>

#include <map>

#include <utility>

#include <vector>

#include "sourcefileprovider.hxx"

#include "sourceprovider-scanner.hxx"

namespace unoidl::detail {

namespace {

class Cursor: public MapCursor {

public:

    explicit Cursor(std::map< OUString, rtl::Reference<Entity> > const & map):

        map_(map), iterator_(map_.begin())

    {}

private:

    virtual ~Cursor() noexcept override {}

    virtual rtl::Reference< Entity > getNext(OUString * name) override;

    std::map< OUString, rtl::Reference<Entity> > const & map_; //TODO: extent

    std::map< OUString, rtl::Reference<Entity> >::const_iterator iterator_;

};

rtl::Reference< Entity > Cursor::getNext(OUString * name) {

    assert(name != nullptr);

    rtl::Reference< Entity > ent;

    if (iterator_ != map_.end()) {

        *name = iterator_->first;

        ent = iterator_->second;

        ++iterator_;

    }

    return ent;

}

class Module: public ModuleEntity {

public:

    Module() {}

    std::map< OUString, rtl::Reference<Entity> > map;

private:

    virtual ~Module() noexcept override {}

    virtual std::vector<OUString> getMemberNames() const override;

    virtual rtl::Reference<MapCursor> createCursor() const override

    { return new Cursor(map); }

};

std::vector<OUString> Module::getMemberNames() const {

    std::vector<OUString> names;

    for (auto & i: map) {

        names.push_back(i.first);

    }

    return names;

}

}

SourceFileProvider::SourceFileProvider(

    rtl::Reference<Manager> const & manager, OUString const & uri)

{

    SourceProviderScannerData data(manager);

    if (!parse(uri, &data)) {

        throw NoSuchFileException(uri);

    }

    for (auto & i: data.entities) {

        if (i.second.kind == SourceProviderEntity::KIND_LOCAL) {

            assert(i.second.entity.is());

            assert(i.second.entity->getSort() != Entity::SORT_MODULE);

            std::map< OUString, rtl::Reference<Entity> > * map = &rootMap_;

            for (sal_Int32 j = 0;;) {

                OUString id(i.first.getToken(0, '.', j));

                if (j == -1) {

                    map->insert(std::make_pair(id, i.second.entity));

                    break;

                }

                std::map< OUString, rtl::Reference<Entity> >::const_iterator k(

                    map->find(id));

                if (k == map->end()) {

                    k = map->insert(std::make_pair(id, new Module)).first;

                }

                Module& mod = dynamic_cast<Module&>(*k->second);

                map = &mod.map;

            }

        }

    }

}

rtl::Reference<MapCursor> SourceFileProvider::createRootCursor() const {

    return new Cursor(rootMap_);

}

rtl::Reference<Entity> SourceFileProvider::findEntity(OUString const & name)

    const

{

    std::map< OUString, rtl::Reference<Entity> > const * map = &rootMap_;

    for (sal_Int32 i = 0;;) {

        OUString id(name.getToken(0, '.', i));

        std::map< OUString, rtl::Reference<Entity> >::const_iterator j(

            map->find(id));

        if (j == map->end()) {

            return rtl::Reference<Entity>();

        }

        if (i == -1) {

            return j->second;

        }

        if (j->second->getSort() != Entity::SORT_MODULE) {

            return rtl::Reference<Entity>();

        }

        Module * mod = dynamic_cast< Module * >(j->second.get());

        assert(mod != nullptr);

        map = &mod->map;

    }

}

SourceFileProvider::~SourceFileProvider() noexcept {}

}

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