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/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2006 Ciaran McCreesh <ciaranm@ciaranm.org>
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <paludis_ruby.hh>
#include <paludis/mask_reasons.hh>
#include <paludis/util/stringify.hh>
#include <ruby.h>

using namespace paludis;
using namespace paludis::ruby;

#define RUBY_FUNC_CAST(x) reinterpret_cast<VALUE (*)(...)>(x)

namespace
{
    static VALUE c_mask_reasons;

    VALUE
    mask_reasons_init(VALUE self)
    {
        return self;
    }

    VALUE
    mask_reasons_new(VALUE self)
    {
        MaskReasons * ptr(0);
        try
        {
            ptr = new MaskReasons;
            VALUE tdata(Data_Wrap_Struct(self, 0, &Common<MaskReasons>::free, ptr));
            rb_obj_call_init(tdata, 0, &self);
            return tdata;
        }
        catch (const std::exception & e)
        {
            delete ptr;
            exception_to_ruby_exception(e);
        }
    }

    VALUE
    mask_reasons_each(VALUE self)
    {
        MaskReasons * m_ptr;
        Data_Get_Struct(self, MaskReasons, m_ptr);
        for (MaskReason i(static_cast<MaskReason>(0)), i_end(last_mr) ; i != i_end ;
                i = static_cast<MaskReason>(static_cast<int>(i) + 1))
            if ((*m_ptr)[i])
                rb_yield(rb_str_new2(stringify(i).c_str()));
        return self;
    }

    VALUE
    mask_reasons_empty(VALUE self)
    {
        MaskReasons * m_ptr;
        Data_Get_Struct(self, MaskReasons, m_ptr);
        return m_ptr->any() ? Qfalse : Qtrue;
        return self;
    }

    void do_register_mask_reasons()
    {
        c_mask_reasons = rb_define_class_under(master_class(), "MaskReasons", rb_cObject);
        rb_define_singleton_method(c_mask_reasons, "new", RUBY_FUNC_CAST(&mask_reasons_new), 0);
        rb_define_method(c_mask_reasons, "initialize", RUBY_FUNC_CAST(&mask_reasons_init), 0);
        rb_define_method(c_mask_reasons, "each", RUBY_FUNC_CAST(&mask_reasons_each), 0);
        rb_include_module(c_mask_reasons, rb_mEnumerable);
        rb_define_method(c_mask_reasons, "empty?", RUBY_FUNC_CAST(&mask_reasons_empty), 0);
    }
}

VALUE
paludis::ruby::create_mask_reasons(const MaskReasons & m)
{
    return Data_Wrap_Struct(c_mask_reasons, 0, &Common<MaskReasons>::free, new MaskReasons(m));
}

RegisterRubyClass::Register paludis_ruby_register_mask_reasons PALUDIS_ATTRIBUTE((used))
    (&do_register_mask_reasons);