libdap  Updated for version 3.18.3
Int16.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 1996-1999
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 using std::cerr;
70 using std::endl;
71 
72 namespace libdap {
73 
78 Int16::Int16(const string &n) : BaseType(n, dods_int16_c), d_buf(0)
79 {}
80 
88 Int16::Int16(const string &n, const string &d) : BaseType(n, d, dods_int16_c), d_buf(0)
89 {}
90 
91 Int16::Int16(const Int16 &copy_from) : BaseType(copy_from)
92 {
93  d_buf = copy_from.d_buf;
94 }
95 
96 BaseType *
98 {
99  return new Int16(*this);
100 }
101 
102 Int16 &
103 Int16::operator=(const Int16 &rhs)
104 {
105  if (this == &rhs)
106  return *this;
107 
108  dynamic_cast<BaseType &>(*this) = rhs;
109 
110  d_buf = rhs.d_buf;
111 
112  return *this;
113 }
114 
115 unsigned int
116 Int16::width(bool) const
117 {
118  return sizeof(dods_int16);
119 }
120 
121 bool
122 Int16::serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval)
123 {
124 #if USE_LOCAL_TIMEOUT_SCHEME
125  dds.timeout_on();
126 #endif
127  if (!read_p())
128  read(); // read() throws Error and InternalErr
129 
130  if (ce_eval && !eval.eval_selection(dds, dataset()))
131  return true;
132 #if USE_LOCAL_TIMEOUT_SCHEME
133  dds.timeout_off();
134 #endif
135  m.put_int16( d_buf ) ;
136 
137  return true;
138 }
139 
140 bool
142 {
143  um.get_int16( d_buf ) ;
144 
145  return false;
146 }
147 
148 void
150 {
151  checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
152 }
153 
162 void
163 Int16::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
164 {
165  if (!read_p())
166  read(); // read() throws Error
167 
168  m.put_int16( d_buf ) ;
169 }
170 
171 void
173 {
174  um.get_int16( d_buf ) ;
175 }
176 
177 unsigned int
178 Int16::val2buf(void *val, bool)
179 {
180  // Jose Garcia
181  // This method is public therefore and I believe it has being designed
182  // to be use by read which must be implemented on the surrogated library,
183  // thus if the pointer val is NULL, is an Internal Error.
184  if (!val)
185  throw InternalErr(__FILE__, __LINE__,
186  "The incoming pointer does not contain any data.");
187 
188  d_buf = *(dods_int16 *)val;
189 
190  return width();
191 }
192 
193 unsigned int
194 Int16::buf2val(void **val)
195 {
196  // Jose Garcia
197  // The same comment justifying throwing an Error in val2buf applies here.
198  if (!val)
199  throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
200 
201  if (!*val)
202  *val = new dods_int16;
203 
204  *(dods_int16 *)*val = d_buf;
205 
206  return width();
207 }
208 
209 dods_int16
210 Int16::value() const
211 {
212  return d_buf;
213 }
214 
215 bool
216 Int16::set_value(dods_int16 i)
217 {
218  d_buf = i;
219  set_read_p(true);
220 
221  return true;
222 }
223 
224 void
225 Int16::print_val(FILE *out, string space, bool print_decl_p)
226 {
227  ostringstream oss;
228  print_val(oss, space, print_decl_p);
229  fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
230 }
231 
232 void
233 Int16::print_val(ostream &out, string space, bool print_decl_p)
234 {
235  if (print_decl_p) {
236  print_decl(out, space, false);
237  out << " = " << d_buf << ";\n" ;
238  }
239  else
240  out << d_buf ;
241 }
242 
243 bool
244 Int16::ops(BaseType *b, int op)
245 {
246 
247  // Extract the Byte arg's value.
248  if (!read_p() && !read()) {
249  // Jose Garcia
250  // Since the read method is virtual and implemented outside
251  // libdap++ if we cannot read the data that is the problem
252  // of the user or of whoever wrote the surrogate library
253  // implemeting read therefore it is an internal error.
254  throw InternalErr(__FILE__, __LINE__, "This value not read!");
255  }
256 
257  // Extract the second arg's value.
258  if (!b || !(b->read_p() || b->read())) {
259  // Jose Garcia
260  // Since the read method is virtual and implemented outside
261  // libdap++ if we cannot read the data that is the problem
262  // of the user or of whoever wrote the surrogate library
263  // implemeting read therefore it is an internal error.
264  throw InternalErr(__FILE__, __LINE__, "This value not read!");
265  }
266 
267  return d4_ops(b, op);
268 }
269 
273 bool Int16::d4_ops(BaseType *b, int op)
274 {
275  switch (b->type()) {
276  case dods_int8_c:
277  return Cmp<dods_int16, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
278  case dods_byte_c:
279  return SUCmp<dods_int16, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
280  case dods_int16_c:
281  return Cmp<dods_int16, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
282  case dods_uint16_c:
283  return SUCmp<dods_int16, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
284  case dods_int32_c:
285  return Cmp<dods_int16, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
286  case dods_uint32_c:
287  return SUCmp<dods_int16, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
288  case dods_int64_c:
289  return Cmp<dods_int16, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
290  case dods_uint64_c:
291  return SUCmp<dods_int16, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
292  case dods_float32_c:
293  return Cmp<dods_int16, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
294  case dods_float64_c:
295  return Cmp<dods_int16, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
296  case dods_str_c:
297  case dods_url_c:
298  throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");
299  default:
300  throw Error(malformed_expr, "Relational operators only work with scalar types.");
301  }
302 }
303 
312 void
313 Int16::dump(ostream &strm) const
314 {
315  strm << DapIndent::LMarg << "Int16::dump - ("
316  << (void *)this << ")" << endl ;
317  DapIndent::Indent() ;
318  BaseType::dump(strm) ;
319  strm << DapIndent::LMarg << "value: " << d_buf << endl ;
320  DapIndent::UnIndent() ;
321 }
322 
323 } // namespace libdap
324 
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 void dump(ostream &strm) const
dumps information about this object
Definition: BaseType.cc:236
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Int16.cc:141
Read data from the stream made by D4StreamMarshaller.
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 bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Int16.cc:244
virtual BaseType * ptr_duplicate()
Definition: Int16.cc:97
Holds a 32-bit floating point value.
Definition: Float32.h:61
A class for software fault reporting.
Definition: InternalErr.h:64
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 Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:310
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: Int16.cc:122
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: Int16.cc:116
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Int16.cc:194
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:461
Int16(const string &n)
Definition: Int16.cc:78
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 compute_checksum(Crc32 &checksum)
include the data for this variable in the checksum DAP4 includes a checksum with every data response...
Definition: Int16.cc:149
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Int16.cc:225
Evaluate a constraint expression.
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Int16.cc:313
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
virtual bool d4_ops(BaseType *b, int op)
Definition: Int16.cc:273
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 ...
A class for error processing.
Definition: Error.h:90
Holds a 32-bit unsigned integer.
Definition: UInt32.h:59
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Int16.cc:178
Holds a 32-bit signed integer.
Definition: Int32.h:65
virtual string dataset() const
Returns the name of the dataset used to create this instance.
Definition: BaseType.cc:303