Int32.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 1994-1999
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: Int32.cc 16088 2007-03-28 21:42:19Z jimg $"
00041     };
00042 
00043 #include <stdlib.h>
00044 
00045 #include "Int32.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 
00066 Int32::Int32(const string &n)
00067         : BaseType(n, dods_int32_c, (xdrproc_t)XDR_INT32)
00068 {}
00069 
00070 Int32::Int32(const Int32 &copy_from) : BaseType(copy_from)
00071 {
00072     _buf = copy_from._buf;
00073 }
00074 
00075 BaseType *
00076 Int32::ptr_duplicate()
00077 {
00078     return new Int32(*this);
00079 }
00080 
00081 Int32::~Int32()
00082 {
00083     DBG(cerr << "~Int32" << endl);
00084 }
00085 
00086 Int32 &
00087 Int32::operator=(const Int32 &rhs)
00088 {
00089     if (this == &rhs)
00090         return *this;
00091 
00092     dynamic_cast<BaseType &>(*this) = rhs;
00093 
00094     _buf = rhs._buf;
00095 
00096     return *this;
00097 }
00098 
00099 unsigned int
00100 Int32::width()
00101 {
00102     return sizeof(dods_int32);
00103 }
00104 
00105 bool
00106 Int32::serialize(const string &dataset, ConstraintEvaluator &eval, DDS &dds,
00107                  XDR *sink, bool ce_eval)
00108 {
00109     dds.timeout_on();
00110 
00111     if (!read_p())
00112         read(dataset);  // read() throws Error and InternalErr
00113 
00114 #if EVAL
00115     if (ce_eval && !eval.eval_selection(dds, dataset))
00116         return true;
00117 #endif
00118 
00119     dds.timeout_off();
00120 
00121     if (!XDR_INT32(sink, &_buf))
00122         throw Error("Network I/O Error. Culd not read int 32 data.\nThis may be due to a bug in libdap, on the server or a\nproblem with the network connection.");
00123 
00124     return true;
00125 }
00126 
00127 bool
00128 Int32::deserialize(XDR *source, DDS *, bool)
00129 {
00130     if (!XDR_INT32(source, &_buf))
00131         throw Error("Network I/O Error. Could not send int 32 data. This may be due to a\nbug in libdap or a problem with the network connection.");
00132 
00133     return false;
00134 }
00135 
00136 unsigned int
00137 Int32::val2buf(void *val, bool)
00138 {
00139     // Jose Garcia
00140     // This method is public therefore and I believe it has being designed
00141     // to be use by read which must be implemented on the surrogated library,
00142     // thus if the pointer val is NULL, is an Internal Error.
00143     if (!val)
00144         throw InternalErr(__FILE__, __LINE__,
00145                           "The incoming pointer does not contain any data.");
00146 
00147     _buf = *(dods_int32 *)val;
00148 
00149     return width();
00150 }
00151 
00152 unsigned int
00153 Int32::buf2val(void **val)
00154 {
00155     // Jose Garcia
00156     // The same comment justifying throwing an Error in val2buf applies here.
00157     if (!val)
00158         throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
00159 
00160     if (!*val)
00161         *val = new dods_int32;
00162 
00163     *(dods_int32 *)*val = _buf;
00164 
00165     return width();
00166 }
00167 
00168 dods_int32
00169 Int32::value() const
00170 {
00171     return _buf;
00172 }
00173 
00174 bool
00175 Int32::set_value(dods_int32 i)
00176 {
00177     _buf = i;
00178     set_read_p(true);
00179 
00180     return true;
00181 }
00182 
00183 void
00184 Int32::print_val(FILE *out, string space, bool print_decl_p)
00185 {
00186     if (print_decl_p) {
00187         print_decl(out, space, false);
00188         fprintf(out, " = %d;\n", (int)_buf) ;
00189     }
00190     else
00191         fprintf(out, "%d", (int)_buf) ;
00192 }
00193 
00194 bool
00195 Int32::ops(BaseType *b, int op, const string &dataset)
00196 {
00197 
00198     // Extract the Byte arg's value.
00199     if (!read_p() && !read(dataset)) {
00200         // Jose Garcia
00201         // Since the read method is virtual and implemented outside
00202         // libdap++ if we can not read the data that is the problem
00203         // of the user or of whoever wrote the surrogate library
00204         // implemeting read therefore it is an internal error.
00205         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00206     }
00207 
00208     // Extract the second arg's value.
00209     if (!b->read_p() && !b->read(dataset)) {
00210         // Jose Garcia
00211         // Since the read method is virtual and implemented outside
00212         // libdap++ if we can not read the data that is the problem
00213         // of the user or of whoever wrote the surrogate library
00214         // implemeting read therefore it is an internal error.
00215         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00216     }
00217 
00218     switch (b->type()) {
00219     case dods_byte_c:
00220         return rops<dods_int32, dods_byte, SUCmp<dods_int32, dods_byte> >
00221                (_buf, dynamic_cast<Byte *>(b)->_buf, op);
00222     case dods_int16_c:
00223         return rops<dods_int32, dods_int16, Cmp<dods_int32, dods_int16> >
00224                (_buf, dynamic_cast<Int16 *>(b)->_buf, op);
00225     case dods_uint16_c:
00226         return rops<dods_int32, dods_uint16, SUCmp<dods_int32, dods_uint16> >
00227                (_buf, dynamic_cast<UInt16 *>(b)->_buf, op);
00228     case dods_int32_c:
00229         return rops<dods_int32, dods_int32, Cmp<dods_int32, dods_int32> >
00230                (_buf, dynamic_cast<Int32 *>(b)->_buf, op);
00231     case dods_uint32_c:
00232         return rops<dods_int32, dods_uint32, SUCmp<dods_int32, dods_uint32> >
00233                (_buf, dynamic_cast<UInt32 *>(b)->_buf, op);
00234     case dods_float32_c:
00235         return rops<dods_int32, dods_float32, Cmp<dods_int32, dods_float32> >
00236                (_buf, dynamic_cast<Float32 *>(b)->_buf, op);
00237     case dods_float64_c:
00238         return rops<dods_int32, dods_float64, Cmp<dods_int32, dods_float64> >
00239                (_buf, dynamic_cast<Float64 *>(b)->_buf, op);
00240     default:
00241         return false;
00242     }
00243 }
00244 
00253 void
00254 Int32::dump(ostream &strm) const
00255 {
00256     strm << DapIndent::LMarg << "Int32::dump - ("
00257     << (void *)this << ")" << endl ;
00258     DapIndent::Indent() ;
00259     BaseType::dump(strm) ;
00260     strm << DapIndent::LMarg << "value: " << _buf << endl ;
00261     DapIndent::UnIndent() ;
00262 }
00263 

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