// -*- mode: c++; c-basic-offset:4 -*-

// This file is part of libdap, A C++ implementation of the OPeNDAP Data

// Access Protocol.

// Copyright (c) 2012 OPeNDAP, Inc.

// Author: James Gallagher <jgallagher@opendap.org>

//

// This library is free software; you can redistribute it and/or

// modify it under the terms of the GNU Lesser General Public

// License as published by the Free Software Foundation; either

// version 2.1 of the License, or (at your option) any later version.

//

// This library 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

// Lesser General Public License for more details.

//

// You should have received a copy of the GNU Lesser General Public

// License along with this library; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

//

// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.

#include "config.h"

#include <cassert>

#include <sstream>

#include "Byte.h"           // synonymous with UInt8 and Char

#include "Int8.h"

#include "Int16.h"

#include "UInt16.h"

#include "Int32.h"

#include "UInt32.h"

#include "Int64.h"

#include "UInt64.h"

#include "Float32.h"

#include "Float64.h"

#include "Str.h"

#include "Url.h"

#include "D4StreamMarshaller.h"

#include "D4StreamUnMarshaller.h"

#include "DDS.h"

#include "util.h"

#include "parser.h"

#include "Operators.h"

#include "dods-limits.h"

#include "debug.h"

#include "InternalErr.h"

using std::cerr;

using std::endl;

namespace libdap {

/** The Int8 constructor accepts the name of the variable to be created.

    @note This type is available in DAP4 only.

    See http://docs.opendap.org/index.php/DAP4:_Specification_Volume_1#Atomic_Types

    @param n A string containing the name of the variable to be created.

*/

Int8::Int8(const string &n) : BaseType(n, dods_int8_c, true /*is_dap4*/), d_buf(0)

{}

/** The Int8 server-side constructor accepts the name of the variable and

    the dataset name from which this instance is created. This is a signed

    8-bit integer and was added for DAP4; Byte and UInt8 are unsigned 8-bit

    integers.

    @note This integer type cannot be used with DAP2; it is only present in DAP4.

    See http://docs.opendap.org/index.php/DAP4:_Specification_Volume_1#Atomic_Types.

    @param n A string containing the name of the variable to be created.

    @param d A string containing the name of the dataset from which this

    variable is created

*/

Int8::Int8(const string &n, const string &d) : BaseType(n, d, dods_int8_c, true /*is_dap4*/), d_buf(0)

{}

Int8::Int8(const Int8 &copy_from) : BaseType(copy_from)

{

    d_buf = copy_from.d_buf;

}

BaseType *

Int8::ptr_duplicate()

{

    return new Int8(*this);

}

Int8 &

Int8::operator=(const Int8 &rhs)

{

    if (this == &rhs)

        return *this;

    static_cast<BaseType &>(*this) = rhs;

    d_buf = rhs.d_buf;

    return *this;

}

unsigned int

Int8::width(bool) const

{

    return sizeof(dods_int8);

}

void

Int8::compute_checksum(Crc32 &checksum)

{

	checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));

}

/**

 * @brief Serialize an Int8

 * @param m

 * @param dmr Unused

 * @param eval Unused

 * @param filter Unused

 * @exception Error is thrown if the value needs to be read and that operation fails.

 */

void

Int8::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)

{

    if (!read_p())

        read();          // read() throws Error

    m.put_int8( d_buf ) ;

}

void

Int8::deserialize(D4StreamUnMarshaller &um, DMR &)

{

    um.get_int8( d_buf ) ;

}

dods_int8

Int8::value() const

{

    return d_buf;

}

bool

Int8::set_value(dods_int8 i)

{

    d_buf = i;

    set_read_p(true);

    return true;

}

void Int8::print_val(ostream &out, string space, bool print_decl_p)

{

	if (print_decl_p) {

		print_decl(out, space, false);

		out << " = " << (int)d_buf << ";\n";

	}

	else

		out << (int)d_buf;

}

bool

Int8::ops(BaseType *b, int op)

{

    // Get the arg's value.

    if (!read_p() && !read())

        throw InternalErr(__FILE__, __LINE__, "This value not read!");

    // Get the second arg's value.

    if (!b->read_p() && !b->read())

        throw InternalErr(__FILE__, __LINE__, "This value not read!");

    return d4_ops(b, op);

}

/**

 * @see BaseType::d4_ops(BaseType *, int)

 */

bool Int8::d4_ops(BaseType *b, int op)

{

    switch (b->type()) {

        case dods_int8_c:

            return Cmp<dods_int8, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());

        case dods_byte_c:

            return SUCmp<dods_int8, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());

        case dods_int16_c:

            return Cmp<dods_int8, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());

        case dods_uint16_c:

            return SUCmp<dods_int8, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());

        case dods_int32_c:

            return Cmp<dods_int8, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());

        case dods_uint32_c:

            return SUCmp<dods_int8, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());

        case dods_int64_c:

            return Cmp<dods_int8, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());

        case dods_uint64_c:

            return SUCmp<dods_int8, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());

        case dods_float32_c:

            return Cmp<dods_int8, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());

        case dods_float64_c:

            return Cmp<dods_int8, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());

        case dods_str_c:

        case dods_url_c:

            throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");

        default:

            throw Error(malformed_expr, "Relational operators only work with scalar types.");

    }

}

/** @brief DAP4 to DAP2 transform

 *

 * Return a DAP2 'copy' of the variable. In this

 * case, since Int8 doesn't have a natural representation

 * in DAP2 we are going to just call it a Byte .

 * Why? Because SIZE.

 *

 * @param root The root group that should hold this new variable. Add Group-level

 * stuff here (e.g., D4Dimensions).

 * @param container Add the new variable to this container.

 *

 * @return A pointer to the transformed variable

 */

std::vector<BaseType *> *

Int8::transform_to_dap2(AttrTable *parent_attr_table)

{

    vector<BaseType *> *vec = BaseType::transform_to_dap2(parent_attr_table);

    if(vec->size()!=1){

        ostringstream oss;

        oss << __func__ << "() -  Something Bad Happened. This transform should produce only ";

        oss << " a single BaseType yet it produced " << vec->size();

        throw new Error(internal_error,oss.str());

    }

    (*vec)[0]->set_type(dods_byte_c);

    return vec;

}

/**

 * @brief dumps information about this object

 *

 * Displays the pointer value of this instance and information about this

 * instance.

 *

 * @param strm C++ i/o stream to dump the information to

 * @return void

 */

void

Int8::dump(ostream &strm) const

{

    strm << DapIndent::LMarg << "Int8::dump - ("

    << (void *)this << ")" << endl ;

    DapIndent::Indent() ;

    BaseType::dump(strm) ;

    strm << DapIndent::LMarg << "value: " << d_buf << endl ;

    DapIndent::UnIndent() ;

}

} // namespace libdap