libdap  Updated for version 3.17.2
Int32.cc
1 
2 // -*- mode: c++; c-basic-offset:4 -*-
3 
4 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
5 // Access Protocol.
6 
7 // Copyright (c) 2002,2003 OPeNDAP, Inc.
8 // Author: James Gallagher <jgallagher@opendap.org>
9 //
10 // This library is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU Lesser General Public
12 // License as published by the Free Software Foundation; either
13 // version 2.1 of the License, or (at your option) any later version.
14 //
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // Lesser General Public License for more details.
19 //
20 // You should have received a copy of the GNU Lesser General Public
21 // License along with this library; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 //
24 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25 
26 // (c) COPYRIGHT URI/MIT 1994-1999
27 // Please read the full copyright statement in the file COPYRIGHT_URI.
28 //
29 // Authors:
30 // jhrg,jimg James Gallagher <jgallagher@gso.uri.edu>
31 
32 // Implementation for Int32.
33 //
34 // jhrg 9/7/94
35 
36 
37 #include "config.h"
38 
39 #include <sstream>
40 
41 #include "Byte.h" // synonymous with UInt8 and Char
42 #include "Int8.h"
43 #include "Int16.h"
44 #include "UInt16.h"
45 #include "Int32.h"
46 #include "UInt32.h"
47 #include "Int64.h"
48 #include "UInt64.h"
49 #include "Float32.h"
50 #include "Float64.h"
51 #include "Str.h"
52 #include "Url.h"
53 
54 #include "DDS.h"
55 #include "Marshaller.h"
56 #include "UnMarshaller.h"
57 
58 #include "DMR.h"
59 #include "D4StreamMarshaller.h"
60 #include "D4StreamUnMarshaller.h"
61 
62 #include "util.h"
63 #include "parser.h"
64 #include "Operators.h"
65 #include "dods-limits.h"
66 #include "debug.h"
67 #include "InternalErr.h"
68 
69 
70 using std::cerr;
71 using std::endl;
72 
73 namespace libdap {
74 
82 Int32::Int32(const string &n) : BaseType(n, dods_int32_c), d_buf(0)
83 {}
84 
92 Int32::Int32(const string &n, const string &d) : BaseType(n, d, dods_int32_c), d_buf(0)
93 {}
94 
95 Int32::Int32(const Int32 &copy_from) : BaseType(copy_from)
96 {
97  d_buf = copy_from.d_buf;
98 }
99 
100 BaseType *
102 {
103  return new Int32(*this);
104 }
105 
106 Int32::~Int32()
107 {
108  DBG(cerr << "~Int32" << endl);
109 }
110 
111 Int32 &
112 Int32::operator=(const Int32 &rhs)
113 {
114  if (this == &rhs)
115  return *this;
116 
117  dynamic_cast<BaseType &>(*this) = rhs;
118 
119  d_buf = rhs.d_buf;
120 
121  return *this;
122 }
123 
124 unsigned int
125 Int32::width(bool) const
126 {
127  return sizeof(dods_int32);
128 }
129 
130 bool
132  Marshaller &m, bool ce_eval)
133 {
134 #if USE_LOCAL_TIMEOUT_SCHEME
135  dds.timeout_on();
136 #endif
137  if (!read_p())
138  read(); // read() throws Error and InternalErr
139 
140  if (ce_eval && !eval.eval_selection(dds, dataset()))
141  return true;
142 #if USE_LOCAL_TIMEOUT_SCHEME
143  dds.timeout_off();
144 #endif
145  m.put_int32( d_buf ) ;
146 
147  return true;
148 }
149 
150 bool
152 {
153  um.get_int32( d_buf ) ;
154 
155  return false;
156 }
157 
158 void
160 {
161  checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
162 }
163 
172 void
173 Int32::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
174 {
175  if (!read_p())
176  read(); // read() throws Error
177 
178  m.put_int32( d_buf ) ;
179 }
180 
181 void
183 {
184  um.get_int32( d_buf ) ;
185 }
186 
187 unsigned int
188 Int32::val2buf(void *val, bool)
189 {
190  // Jose Garcia
191  // This method is public therefore and I believe it has being designed
192  // to be use by read which must be implemented on the surrogated library,
193  // thus if the pointer val is NULL, is an Internal Error.
194  if (!val)
195  throw InternalErr(__FILE__, __LINE__,
196  "The incoming pointer does not contain any data.");
197 
198  d_buf = *(dods_int32 *)val;
199 
200  return width();
201 }
202 
203 unsigned int
204 Int32::buf2val(void **val)
205 {
206  // Jose Garcia
207  // The same comment justifying throwing an Error in val2buf applies here.
208  if (!val)
209  throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
210 
211  if (!*val)
212  *val = new dods_int32;
213 
214  *(dods_int32 *)*val = d_buf;
215 
216  return width();
217 }
218 
219 dods_int32
220 Int32::value() const
221 {
222  return d_buf;
223 }
224 
225 bool
226 Int32::set_value(dods_int32 i)
227 {
228  d_buf = i;
229  set_read_p(true);
230 
231  return true;
232 }
233 
234 void
235 Int32::print_val(FILE *out, string space, bool print_decl_p)
236 {
237  ostringstream oss;
238  print_val(oss, space, print_decl_p);
239  fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
240 }
241 
242 void
243 Int32::print_val(ostream &out, string space, bool print_decl_p)
244 {
245  if (print_decl_p) {
246  print_decl(out, space, false);
247  out << " = " << (int)d_buf << ";\n" ;
248  }
249  else
250  out << (int)d_buf ;
251 }
252 
253 bool
254 Int32::ops(BaseType *b, int op)
255 {
256  if (!read_p() && !read()) {
257  // Jose Garcia
258  // Since the read method is virtual and implemented outside
259  // libdap++ if we cannot read the data that is the problem
260  // of the user or of whoever wrote the surrogate library
261  // implemeting read therefore it is an internal error.
262  throw InternalErr(__FILE__, __LINE__, "This value not read!");
263  }
264 
265  // Extract the second arg's value.
266  if (!b->read_p() && !b->read()) {
267  // Jose Garcia
268  // Since the read method is virtual and implemented outside
269  // libdap++ if we cannot read the data that is the problem
270  // of the user or of whoever wrote the surrogate library
271  // implemeting read therefore it is an internal error.
272  throw InternalErr(__FILE__, __LINE__, "This value not read!");
273  }
274 
275  switch (b->type()) {
276  case dods_int8_c:
277  return Cmp<dods_int32, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
278  case dods_byte_c:
279  return SUCmp<dods_int32, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
280  case dods_int16_c:
281  return Cmp<dods_int32, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
282  case dods_uint16_c:
283  return SUCmp<dods_int32, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
284  case dods_int32_c:
285  return Cmp<dods_int32, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
286  case dods_uint32_c:
287  return SUCmp<dods_int32, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
288  case dods_int64_c:
289  return Cmp<dods_int32, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
290  case dods_uint64_c:
291  return SUCmp<dods_int32, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
292  case dods_float32_c:
293  return Cmp<dods_int32, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
294  case dods_float64_c:
295  return Cmp<dods_int32, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
296  default:
297  return false;
298  }
299 }
300 
309 void
310 Int32::dump(ostream &strm) const
311 {
312  strm << DapIndent::LMarg << "Int32::dump - ("
313  << (void *)this << ")" << endl ;
314  DapIndent::Indent() ;
315  BaseType::dump(strm) ;
316  strm << DapIndent::LMarg << "value: " << d_buf << endl ;
317  DapIndent::UnIndent() ;
318 }
319 
320 } // namespace libdap
321 
virtual bool read()
Read data into a local buffer.
Definition: BaseType.cc:820
Holds an 8-bit signed integer value.
Definition: Int8.h:42
Holds a64-bit signed integer.
Definition: Int64.h:49
virtual bool read_p()
Has this variable been read?
Definition: BaseType.cc:425
abstract base class used to unmarshall/deserialize dap data objects
Definition: UnMarshaller.h:54
virtual void print_decl(FILE *out, string space=" ", bool print_semi=true, bool constraint_info=false, bool constrained=false)
Print an ASCII representation of the variable structure.
Definition: BaseType.cc:924
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Int32.cc:254
Int32(const string &n)
Definition: Int32.cc:82
Read data from the stream made by D4StreamMarshaller.
virtual unsigned int width(bool constrained=false) const
How many bytes does this use Return the number of bytes of storage this variable uses. For scalar types, this is pretty simple (an int32 uses 4 bytes, etc.). For arrays and Constructors, it is a bit more complex. Note that a scalar String variable uses sizeof(String*) bytes, not the length of the string. In other words, the value returned is independent of the type. Also note width() of a String array returns the number of elements in the array times sizeof(String*). That is, each different array size is a different data type.
Definition: Int32.cc:125
virtual void compute_checksum(Crc32 &checksum)
include the data for this variable in the checksum DAP4 includes a checksum with every data response...
Definition: Int32.cc:159
Holds an unsigned 16-bit integer.
Definition: UInt16.h:57
Definition: crc.h:76
BaseType(const string &n, const Type &t, bool is_dap4=false)
The BaseType constructor.
Definition: BaseType.cc:125
virtual Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:310
Holds a 32-bit floating point value.
Definition: Float32.h:61
A class for software fault reporting.
Definition: InternalErr.h:64
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Int32.cc:151
virtual string dataset() const
Returns the name of the dataset used to create this instance.
Definition: BaseType.cc:303
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4&#39;s receiv...
Holds a 16-bit signed integer value.
Definition: Int16.h:59
virtual void dump(ostream &strm) const
dumps information about this object
Definition: BaseType.cc:236
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:461
virtual BaseType * ptr_duplicate()
Definition: Int32.cc:101
Holds a 64-bit unsigned integer.
Definition: UInt64.h:49
void AddData(const uint8_t *pData, const uint32_t length)
Definition: crc.h:98
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Int32.cc:310
Evaluate a constraint expression.
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Int32.cc:235
The basic data type for the DODS DAP types.
Definition: BaseType.h:117
abstract base class used to marshal/serialize dap data objects
Definition: Marshaller.h:50
Holds a 64-bit (double precision) floating point value.
Definition: Float64.h:60
Holds a single byte.
Definition: Byte.h:60
bool eval_selection(DDS &dds, const std::string &dataset)
Evaluate a boolean-valued constraint expression. This is main method for the evaluator ans is called ...
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Int32.cc:204
Holds a 32-bit unsigned integer.
Definition: UInt32.h:59
virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval=true)
Move data to the net, then remove them from the object.
Definition: Int32.cc:131
Holds a 32-bit signed integer.
Definition: Int32.h:65
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Int32.cc:188