Int16.cc

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00001 
00002 // -*- mode: c++; c-basic-offset:4 -*-
00003 
00004 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
00005 // Access Protocol.
00006 
00007 // Copyright (c) 2002,2003 OPeNDAP, Inc.
00008 // Author: James Gallagher <jgallagher@opendap.org>
00009 //
00010 // This library is free software; you can redistribute it and/or
00011 // modify it under the terms of the GNU Lesser General Public
00012 // License as published by the Free Software Foundation; either
00013 // version 2.1 of the License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 //
00024 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
00025 
00026 // (c) COPYRIGHT URI/MIT 1996-1999
00027 // Please read the full copyright statement in the file COPYRIGHT_URI.
00028 //
00029 // Authors:
00030 //      jhrg,jimg       James Gallagher <jgallagher@gso.uri.edu>
00031 
00032 // Implementation for Int32.
00033 //
00034 // jhrg 9/7/94
00035 
00036 
00037 #include "config.h"
00038 
00039 static char rcsid[] not_used =
00040     {"$Id: Int16.cc 16088 2007-03-28 21:42:19Z jimg $"
00041     };
00042 
00043 #include <stdlib.h>
00044 
00045 #include "Int16.h"
00046 #include "DDS.h"
00047 #include "util.h"
00048 #include "parser.h"
00049 //#include "ce_expr.tab.h"
00050 #include "Operators.h"
00051 #include "dods-limits.h"
00052 #include "debug.h"
00053 #include "InternalErr.h"
00054 
00055 
00056 using std::cerr;
00057 using std::endl;
00058 
00059 Int16::Int16(const string &n) : BaseType(n, dods_int16_c, (xdrproc_t)XDR_INT16)
00060 {}
00061 
00062 Int16::Int16(const Int16 &copy_from) : BaseType(copy_from)
00063 {
00064     _buf = copy_from._buf;
00065 }
00066 
00067 BaseType *
00068 Int16::ptr_duplicate()
00069 {
00070     return new Int16(*this);
00071 }
00072 
00073 Int16 &
00074 Int16::operator=(const Int16 &rhs)
00075 {
00076     if (this == &rhs)
00077         return *this;
00078 
00079     dynamic_cast<BaseType &>(*this) = rhs;
00080 
00081     _buf = rhs._buf;
00082 
00083     return *this;
00084 }
00085 
00086 unsigned int
00087 Int16::width()
00088 {
00089     return sizeof(dods_int16);
00090 }
00091 
00092 bool
00093 Int16::serialize(const string &dataset, ConstraintEvaluator &eval, DDS &dds,
00094                  XDR *sink, bool ce_eval)
00095 {
00096     dds.timeout_on();
00097 
00098     if (!read_p())
00099         read(dataset);  // read() throws Error and InternalErr
00100 
00101 #if EVAL
00102     if (ce_eval && !eval.eval_selection(dds, dataset))
00103         return true;
00104 #endif
00105 
00106     dds.timeout_off();
00107 
00108     if (!XDR_INT16(sink, &_buf))
00109         throw Error("Network I/O Error. Could not send int 16 data.\nThis may be due to a bug in libdap, on the server or a\nproblem with the network connection.");
00110 
00111     return true;
00112 }
00113 
00114 bool
00115 Int16::deserialize(XDR *source, DDS *, bool)
00116 {
00117     if (!XDR_INT16(source, &_buf))
00118         throw Error("Network I/O Error. Could not read int 16 data. This may be due to a\nbug in libdap or a problem with the network connection.");
00119 
00120     return false;
00121 }
00122 
00123 unsigned int
00124 Int16::val2buf(void *val, bool)
00125 {
00126     // Jose Garcia
00127     // This method is public therefore and I believe it has being designed
00128     // to be use by read which must be implemented on the surrogated library,
00129     // thus if the pointer val is NULL, is  an Internal Error.
00130     if (!val)
00131         throw InternalErr(__FILE__, __LINE__,
00132                           "The incoming pointer does not contain any data.");
00133 
00134     _buf = *(dods_int16 *)val;
00135 
00136     return width();
00137 }
00138 
00139 unsigned int
00140 Int16::buf2val(void **val)
00141 {
00142     // Jose Garcia
00143     // The same comment justifying throwing an Error in val2buf applies here.
00144     if (!val)
00145         throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
00146 
00147     if (!*val)
00148         *val = new dods_int16;
00149 
00150     *(dods_int16 *)*val = _buf;
00151 
00152     return width();
00153 }
00154 
00155 dods_int16
00156 Int16::value() const
00157 {
00158     return _buf;
00159 }
00160 
00161 bool
00162 Int16::set_value(dods_int16 i)
00163 {
00164     _buf = i;
00165     set_read_p(true);
00166 
00167     return true;
00168 }
00169 
00170 void
00171 Int16::print_val(FILE *out, string space, bool print_decl_p)
00172 {
00173     if (print_decl_p) {
00174         print_decl(out, space, false);
00175         fprintf(out, " = %d;\n", _buf) ;
00176     }
00177     else
00178         fprintf(out, "%d", _buf) ;
00179 }
00180 
00181 bool
00182 Int16::ops(BaseType *b, int op, const string &dataset)
00183 {
00184 
00185     // Extract the Byte arg's value.
00186     if (!read_p() && !read(dataset)) {
00187         // Jose Garcia
00188         // Since the read method is virtual and implemented outside
00189         // libdap++ if we can not read the data that is the problem
00190         // of the user or of whoever wrote the surrogate library
00191         // implemeting read therefore it is an internal error.
00192         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00193     }
00194 
00195     // Extract the second arg's value.
00196     if (!b->read_p() && !b->read(dataset)) {
00197         // Jose Garcia
00198         // Since the read method is virtual and implemented outside
00199         // libdap++ if we can not read the data that is the problem
00200         // of the user or of whoever wrote the surrogate library
00201         // implemeting read therefore it is an internal error.
00202         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00203     }
00204 
00205     switch (b->type()) {
00206     case dods_byte_c:
00207         return rops<dods_int16, dods_byte, SUCmp<dods_int16, dods_byte> >
00208                (_buf, dynamic_cast<Byte *>(b)->_buf, op);
00209     case dods_int16_c:
00210         return rops<dods_int16, dods_int16, Cmp<dods_int16, dods_int16> >
00211                (_buf, dynamic_cast<Int16 *>(b)->_buf, op);
00212     case dods_uint16_c:
00213         return rops<dods_int16, dods_uint16, SUCmp<dods_int16, dods_uint16> >
00214                (_buf, dynamic_cast<UInt16 *>(b)->_buf, op);
00215     case dods_int32_c:
00216         return rops<dods_int16, dods_int32, Cmp<dods_int16, dods_int32> >
00217                (_buf, dynamic_cast<Int32 *>(b)->_buf, op);
00218     case dods_uint32_c:
00219         return rops<dods_int16, dods_uint32, SUCmp<dods_int16, dods_uint32> >
00220                (_buf, dynamic_cast<UInt32 *>(b)->_buf, op);
00221     case dods_float32_c:
00222         return rops<dods_int16, dods_float32, Cmp<dods_int16, dods_float32> >
00223                (_buf, dynamic_cast<Float32 *>(b)->_buf, op);
00224     case dods_float64_c:
00225         return rops<dods_int16, dods_float64, Cmp<dods_int16, dods_float64> >
00226                (_buf, dynamic_cast<Float64 *>(b)->_buf, op);
00227     default:
00228         return false;
00229     }
00230 }
00231 
00240 void
00241 Int16::dump(ostream &strm) const
00242 {
00243     strm << DapIndent::LMarg << "Int16::dump - ("
00244     << (void *)this << ")" << endl ;
00245     DapIndent::Indent() ;
00246     BaseType::dump(strm) ;
00247     strm << DapIndent::LMarg << "value: " << _buf << endl ;
00248     DapIndent::UnIndent() ;
00249 }
00250 

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