libdap  Updated for version 3.20.11
libdap4 is an implementation of OPeNDAP's DAP protocol.
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 //#define DODS_DEBUG
40 
41 #include <sstream>
42 
43 #include "Byte.h" // synonymous with UInt8 and Char
44 #include "Int8.h"
45 #include "Int16.h"
46 #include "UInt16.h"
47 #include "Int32.h"
48 #include "UInt32.h"
49 #include "Int64.h"
50 #include "UInt64.h"
51 #include "Float32.h"
52 #include "Float64.h"
53 #include "Str.h"
54 #include "Url.h"
55 
56 #include "DDS.h"
57 #include "Marshaller.h"
58 #include "UnMarshaller.h"
59 
60 #include "DMR.h"
61 #include "D4StreamMarshaller.h"
62 #include "D4StreamUnMarshaller.h"
63 
64 #include "util.h"
65 #include "parser.h"
66 #include "Operators.h"
67 #include "dods-limits.h"
68 #include "debug.h"
69 #include "InternalErr.h"
70 #include "DapIndent.h"
71 
72 using std::cerr;
73 using std::endl;
74 
75 namespace libdap {
76 
84 Int32::Int32(const string &n) : BaseType(n, dods_int32_c), d_buf(0)
85 {}
86 
94 Int32::Int32(const string &n, const string &d) : BaseType(n, d, dods_int32_c), d_buf(0)
95 {}
96 
97 Int32::Int32(const Int32 &copy_from) : BaseType(copy_from)
98 {
99  d_buf = copy_from.d_buf;
100 }
101 
102 BaseType *
104 {
105  return new Int32(*this);
106 }
107 
108 Int32::~Int32()
109 {
110  DBG(cerr << "~Int32" << endl);
111 }
112 
113 Int32 &
114 Int32::operator=(const Int32 &rhs)
115 {
116  if (this == &rhs)
117  return *this;
118  BaseType::operator=(rhs);
119  d_buf = rhs.d_buf;
120  return *this;
121 }
122 
123 unsigned int
124 Int32::width(bool) const
125 {
126  return sizeof(dods_int32);
127 }
128 
129 bool
131  Marshaller &m, bool ce_eval)
132 {
133 #if USE_LOCAL_TIMEOUT_SCHEME
134  dds.timeout_on();
135 #endif
136  if (!read_p())
137  read(); // read() throws Error and InternalErr
138 
139  if (ce_eval && !eval.eval_selection(dds, dataset()))
140  return true;
141 #if USE_LOCAL_TIMEOUT_SCHEME
142  dds.timeout_off();
143 #endif
144  m.put_int32( d_buf ) ;
145 
146  return true;
147 }
148 
149 bool
151 {
152  um.get_int32( d_buf ) ;
153 
154  return false;
155 }
156 
157 void
159 {
160  checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
161 }
162 
171 void
172 Int32::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
173 {
174  if (!read_p())
175  read(); // read() throws Error
176 
177  m.put_int32( d_buf ) ;
178 }
179 
180 void
182 {
183  um.get_int32( d_buf ) ;
184 }
185 
186 unsigned int
187 Int32::val2buf(void *val, bool)
188 {
189  // Jose Garcia
190  // This method is public therefore and I believe it has being designed
191  // to be use by read which must be implemented on the surrogated library,
192  // thus if the pointer val is NULL, is an Internal Error.
193  if (!val)
194  throw InternalErr(__FILE__, __LINE__,
195  "The incoming pointer does not contain any data.");
196 
197  d_buf = *(dods_int32 *)val;
198 
199  return width();
200 }
201 
202 unsigned int
203 Int32::buf2val(void **val)
204 {
205  // Jose Garcia
206  // The same comment justifying throwing an Error in val2buf applies here.
207  if (!val)
208  throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
209 
210  if (!*val)
211  *val = new dods_int32;
212 
213  *(dods_int32 *)*val = d_buf;
214 
215  return width();
216 }
217 
218 dods_int32
219 Int32::value() const
220 {
221  return d_buf;
222 }
223 
224 bool
225 Int32::set_value(dods_int32 i)
226 {
227  d_buf = i;
228  set_read_p(true);
229 
230  return true;
231 }
232 
233 void
234 Int32::print_val(FILE *out, string space, bool print_decl_p)
235 {
236  ostringstream oss;
237  print_val(oss, space, print_decl_p);
238  fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
239 }
240 
241 void Int32::print_val(ostream &out, string space, bool print_decl_p)
242 {
243  if (print_decl_p) {
244  print_decl(out, space, false);
245  out << " = " << (int) d_buf << ";\n";
246  }
247  else
248  out << (int) d_buf;
249 }
250 
251 bool
252 Int32::ops(BaseType *b, int op)
253 {
254  if (!read_p() && !read()) {
255  // Jose Garcia
256  // Since the read method is virtual and implemented outside
257  // libdap++ if we cannot read the data that is the problem
258  // of the user or of whoever wrote the surrogate library
259  // implemeting read therefore it is an internal error.
260  throw InternalErr(__FILE__, __LINE__, "This value not read!");
261  }
262 
263  // Extract the second arg's value.
264  if (!b || !(b->read_p() || b->read())) {
265  // Jose Garcia
266  // Since the read method is virtual and implemented outside
267  // libdap++ if we cannot read the data that is the problem
268  // of the user or of whoever wrote the surrogate library
269  // implemeting read therefore it is an internal error.
270  throw InternalErr(__FILE__, __LINE__, "This value not read!");
271  }
272 
273  return d4_ops(b, op);
274 }
275 
279 bool Int32::d4_ops(BaseType *b, int op)
280 {
281  DBG(cerr << "b->typename(): " << b->type_name() << endl);
282  switch (b->type()) {
283  case dods_int8_c:
284  return Cmp<dods_int32, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
285  case dods_byte_c:
286  return Cmp<dods_int32, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
287  case dods_int16_c:
288  return Cmp<dods_int32, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
289  case dods_uint16_c:
290  return Cmp<dods_int32, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
291  case dods_int32_c:
292  return Cmp<dods_int32, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
293  case dods_uint32_c:
294  return Cmp<dods_int32, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
295  case dods_int64_c:
296  return Cmp<dods_int32, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
297  case dods_uint64_c:
298  return Cmp<dods_int32, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
299  case dods_float32_c:
300  return Cmp<dods_int32, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
301  case dods_float64_c:
302  return Cmp<dods_int32, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
303  case dods_str_c:
304  case dods_url_c:
305  throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");
306  default:
307  throw Error(malformed_expr, "Relational operators only work with scalar types.");
308  }
309 }
310 
319 void
320 Int32::dump(ostream &strm) const
321 {
322  strm << DapIndent::LMarg << "Int32::dump - ("
323  << (void *)this << ")" << endl ;
324  DapIndent::Indent() ;
325  BaseType::dump(strm) ;
326  strm << DapIndent::LMarg << "value: " << d_buf << endl ;
327  DapIndent::UnIndent() ;
328 }
329 
330 } // namespace libdap
331 
Definition: crc.h:77
void AddData(const uint8_t *pData, const uint32_t length)
Definition: crc.h:98
The basic data type for the DODS DAP types.
Definition: BaseType.h:118
virtual string type_name() const
Returns the type of the class instance as a string.
Definition: BaseType.cc:375
virtual bool read()
Read data into a local buffer.
Definition: BaseType.cc:895
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:999
virtual bool read_p()
Has this variable been read?
Definition: BaseType.cc:476
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:512
virtual string dataset() const
Returns the name of the dataset used to create this instance.
Definition: BaseType.cc:354
void dump(ostream &strm) const override
dumps information about this object
Definition: BaseType.cc:287
virtual Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:361
Holds a single byte.
Definition: Byte.h:61
Evaluate a constraint expression.
bool eval_selection(DDS &dds, const std::string &dataset)
Evaluate a boolean-valued constraint expression. This is main method for the evaluator and is called ...
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiv...
Read data from the stream made by D4StreamMarshaller.
A class for error processing.
Definition: Error.h:94
Holds a 32-bit floating point value.
Definition: Float32.h:62
Holds a 64-bit (double precision) floating point value.
Definition: Float64.h:61
Holds a 16-bit signed integer value.
Definition: Int16.h:60
Holds a 32-bit signed integer.
Definition: Int32.h:66
virtual unsigned int width(bool constrained=false) const
How many bytes does this variable use Return the number of bytes of storage this variable uses....
Definition: Int32.cc:124
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Int32.cc:203
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:158
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Int32.cc:187
virtual BaseType * ptr_duplicate()
Definition: Int32.cc:103
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Int32.cc:320
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Int32.cc:150
virtual bool d4_ops(BaseType *b, int op)
Definition: Int32.cc:279
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Int32.cc:234
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Int32.cc:252
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:130
Int32(const string &n)
Definition: Int32.cc:84
Holds a64-bit signed integer.
Definition: Int64.h:50
Holds an 8-bit signed integer value.
Definition: Int8.h:43
A class for software fault reporting.
Definition: InternalErr.h:65
abstract base class used to marshal/serialize dap data objects
Definition: Marshaller.h:50
Holds an unsigned 16-bit integer.
Definition: UInt16.h:58
Holds a 32-bit unsigned integer.
Definition: UInt32.h:60
Holds a 64-bit unsigned integer.
Definition: UInt64.h:50
abstract base class used to unmarshall/deserialize dap data objects
Definition: UnMarshaller.h:55
top level DAP object to house generic methods
Definition: AlarmHandler.h:36