/* -*- c++ -*- */
/*
 * Copyright 2006,2009 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "pmt_int.h"
#include <pmt/pmt.h>
#include <iostream>
#include <sstream>
#include <vector>

namespace pmt {

static void write_list_tail(pmt_t obj, std::ostream& port)
{
    write(car(obj), port); // write the car
    obj = cdr(obj);        // step to cdr

    if (is_null(obj)) // ()
        port << ")";

    else if (is_pair(obj)) { // normal list
        port << " ";
        write_list_tail(obj, port);
    } else { // dotted pair
        port << " . ";
        write(obj, port);
        port << ")";
    }
}

void write(pmt_t obj, std::ostream& port)
{
    if (is_bool(obj)) {
        if (is_true(obj))
            port << "#t";
        else
            port << "#f";
    } else if (is_symbol(obj)) {
        port << symbol_to_string(obj);
    } else if (is_number(obj)) {
        if (is_integer(obj))
            port << to_long(obj);
        else if (is_uint64(obj))
            port << to_uint64(obj);
        else if (is_real(obj))
            port << to_double(obj);
        else if (is_complex(obj)) {
            std::complex<double> c = to_complex(obj);
            port << c.real() << '+' << c.imag() << 'i';
        } else
            goto error;
    } else if (is_null(obj)) {
        port << "()";
    } else if (is_pair(obj)) {
        port << "(";
        write_list_tail(obj, port);
    } else if (is_tuple(obj)) {
        port << "{";
        size_t len = length(obj);
        if (len > 0) {
            port << tuple_ref(obj, 0);
            for (size_t i = 1; i < len; i++)
                port << " " << tuple_ref(obj, i);
        }
        port << "}";
    } else if (is_vector(obj)) {
        port << "#(";
        size_t len = length(obj);
        if (len > 0) {
            port << vector_ref(obj, 0);
            for (size_t i = 1; i < len; i++)
                port << " " << vector_ref(obj, i);
        }
        port << ")";
    } else if (is_dict(obj)) {
        // FIXME
        // port << "#<dict " << obj << ">";
        port << "#<dict>";
    } else if (is_uniform_vector(obj)) {
        port << "#[";
        size_t len = length(obj);
        if (len) {
            pmt_uniform_vector* uv = static_cast<pmt_uniform_vector*>(obj.get());
            port << uv->string_ref(0);
            for (size_t i = 1; i < len; i++)
                port << " " << uv->string_ref(i);
        }
        port << "]";
    } else {
    error:
        // FIXME
        // port << "#<" << obj << ">";
        port << "#<unknown>";
    }
}

std::ostream& operator<<(std::ostream& os, pmt_t obj)
{
    write(obj, os);
    return os;
}

std::string write_string(pmt_t obj)
{
    std::ostringstream s;
    s << obj;
    return s.str();
}

pmt_t read(std::istream& port)
{
    throw notimplemented("notimplemented: pmt::read", PMT_NIL);
}

void serialize(pmt_t obj, std::ostream& sink)
{
    throw notimplemented("notimplemented: pmt::serialize", obj);
}

/*!
 * \brief Create obj from portable byte-serial representation
 */
pmt_t deserialize(std::istream& source)
{
    throw notimplemented("notimplemented: pmt::deserialize", PMT_NIL);
}

} /* namespace pmt */


void pmt::print(pmt_t v) { std::cout << write_string(v) << std::endl; }
