libdap++  Updated for version 3.14.0
Float64.cc
Go to the documentation of this file.
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 Float64.
33 //
34 // jhrg 9/7/94
35 
36 #include "config.h"
37 
38 #include <sstream>
39 #include <iomanip>
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 "InternalErr.h"
67 
68 
69 using std::cerr;
70 using std::endl;
71 
72 namespace libdap {
73 
82 Float64::Float64(const string &n) : BaseType(n, dods_float64_c), d_buf(0)
83 {}
84 
92 Float64::Float64(const string &n, const string &d) : BaseType(n, d, dods_float64_c), d_buf(0)
93 {}
94 
95 Float64::Float64(const Float64 &copy_from) : BaseType(copy_from)
96 {
97  d_buf = copy_from.d_buf;
98 }
99 
100 BaseType *
102 {
103  return new Float64(*this);
104 }
105 
106 Float64 &
108 {
109  if (this == &rhs)
110  return *this;
111 
112  dynamic_cast<BaseType &>(*this) = rhs;
113 
114  d_buf = rhs.d_buf;
115 
116  return *this;
117 }
118 
119 unsigned int
120 Float64::width(bool) const
121 {
122  return sizeof(dods_float64);
123 }
124 
125 bool
126 Float64::serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval)
127 {
128  dds.timeout_on();
129 
130  if (!read_p())
131  read(); // read() throws Error and InternalErr
132 
133  if (ce_eval && !eval.eval_selection(dds, dataset()))
134  return true;
135 
136  dds.timeout_off();
137 
138  m.put_float64( d_buf ) ;
139 
140  return true;
141 }
142 
143 bool
145 {
146  um.get_float64( d_buf ) ;
147 
148  return false;
149 }
150 
151 void
153 {
154  checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
155 }
156 
165 void
166 Float64::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
167 {
168  if (!read_p())
169  read(); // read() throws Error
170 
171  m.put_float64( d_buf ) ;
172 }
173 
174 void
176 {
177  um.get_float64( d_buf ) ;
178 }
179 
180 unsigned int
181 Float64::val2buf(void *val, bool)
182 {
183  // Jose Garcia
184  // This method is public therefore and I believe it has being designed
185  // to be use by read which must be implemented on the surrogated library,
186  // thus if the pointer val is NULL, is an Internal Error.
187  if (!val)
188  throw InternalErr(__FILE__, __LINE__,
189  "The incoming pointer does not contain any data.");
190 
191  d_buf = *(dods_float64 *)val;
192 
193  return width();
194 }
195 
196 unsigned int
197 Float64::buf2val(void **val)
198 {
199  // Jose Garcia
200  // The same comment justifying throwing an Error in val2buf applies here.
201  if (!val)
202  throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
203 
204  if (!*val)
205  *val = new dods_float64;
206 
207  *(dods_float64 *)*val = d_buf;
208 
209  return width();
210 }
211 
219 {
220  return d_buf;
221 }
222 
223 bool
225 {
226  d_buf = val;
227  set_read_p(true);
228 
229  return true;
230 }
231 
232 void
233 Float64::print_val(FILE *out, string space, bool print_decl_p)
234 {
235  ostringstream oss;
236  print_val(oss, space, print_decl_p);
237  fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
238 }
239 
240 void
241 Float64::print_val(ostream &out, string space, bool print_decl_p)
242 {
243  // FIX: need to set precision in the printing somehow.
244  // os.precision(DODS_DBL_DIG);
245 
246  if (print_decl_p) {
247  print_decl(out, space, false);
248  out << " = " << std::setprecision( 15 ) << d_buf << ";\n" ;
249  }
250  else
251  out << std::setprecision( 15 ) << d_buf ;
252 }
253 
254 bool
256 {
257  // Extract the Byte arg's value.
258  if (!read_p() && !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  // Extract the second arg's value.
268  if (!b->read_p() && !b->read()) {
269  // Jose Garcia
270  // Since the read method is virtual and implemented outside
271  // libdap++ if we cannot read the data that is the problem
272  // of the user or of whoever wrote the surrogate library
273  // implemeting read therefore it is an internal error.
274  throw InternalErr(__FILE__, __LINE__, "This value not read!");
275  }
276 
277  switch (b->type()) {
278  case dods_int8_c:
279  return Cmp<dods_float64, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
280  case dods_byte_c:
281  return SUCmp<dods_float64, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
282  case dods_int16_c:
283  return Cmp<dods_float64, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
284  case dods_uint16_c:
285  return SUCmp<dods_float64, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
286  case dods_int32_c:
287  return Cmp<dods_float64, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
288  case dods_uint32_c:
289  return SUCmp<dods_float64, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
290  case dods_int64_c:
291  return Cmp<dods_float64, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
292  case dods_uint64_c:
293  return SUCmp<dods_float64, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
294  case dods_float32_c:
295  return Cmp<dods_float64, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
296  case dods_float64_c:
297  return Cmp<dods_float64, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
298  default:
299  return false;
300  }
301 }
302 
311 void
312 Float64::dump(ostream &strm) const
313 {
314  strm << DapIndent::LMarg << "Float64::dump - ("
315  << (void *)this << ")" << endl ;
317  BaseType::dump(strm) ;
318  strm << DapIndent::LMarg << "value: " << d_buf << endl ;
320 }
321 
322 } // namespace libdap
323 
virtual bool read()
Read data into a local buffer.
Definition: BaseType.cc:805
Holds an 8-bit signed integer value.
Definition: Int8.h:42
virtual void put_float64(dods_float64 val)
Holds a64-bit signed integer.
Definition: Int64.h:49
virtual bool read_p()
Has this variable been read?
Definition: BaseType.cc:421
static void UnIndent()
Definition: DapIndent.cc:51
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:905
virtual void put_float64(dods_float64 val)=0
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Float64.cc:197
virtual void compute_checksum(Crc32 &checksum)
include the data for this variable in the checksum DAP4 includes a checksum with every data response...
Definition: Float64.cc:152
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Float64.cc:144
virtual bool set_value(dods_float64 val)
Definition: Float64.cc:224
Read data from the stream made by D4StreamMarshaller.
virtual BaseType * ptr_duplicate()
Definition: Float64.cc:101
Holds an unsigned 16-bit integer.
Definition: UInt16.h:57
Definition: crc.h:76
virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval=true)
Move data to the net.
Definition: Float64.cc:126
void timeout_off()
Definition: DDS.cc:894
Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:306
virtual dods_float64 value() const
Definition: Float64.cc:218
Holds a 32-bit floating point value.
Definition: Float32.h:61
A class for software fault reporting.
Definition: InternalErr.h:64
string dataset() const
Returns the name of the dataset used to create this instance.
Definition: BaseType.cc:299
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Float64.cc:255
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiv...
Holds a 16-bit signed integer value.
Definition: Int16.h:59
double dods_float64
static void Indent()
Definition: DapIndent.cc:45
virtual void dump(ostream &strm) const
dumps information about this object
Definition: BaseType.cc:237
Float64(const string &n)
Definition: Float64.cc:82
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:454
Holds a 64-bit unsigned integer.
Definition: UInt64.h:49
void AddData(const uint8_t *pData, const uint32_t length)
Definition: crc.h:84
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Float64.cc:181
dods_float64 d_buf
Definition: Float64.h:63
void timeout_on()
Definition: DDS.cc:886
Evaluate a constraint expression.
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Float64.cc:312
static ostream & LMarg(ostream &strm)
Definition: DapIndent.cc:80
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:53
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 ...
Float64 & operator=(const Float64 &rhs)
Definition: Float64.cc:107
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: Float64.cc:120
Holds a 32-bit unsigned integer.
Definition: UInt32.h:59
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Float64.cc:233
virtual void get_float64(dods_float64 &val)
virtual void get_float64(dods_float64 &val)=0
Holds a 32-bit signed integer.
Definition: Int32.h:65