libdap++  Updated for version 3.13.3
Float32.cc
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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 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 Float32.
33 //
34 // 3/22/99 jhrg
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 "Marshaller.h"
55 #include "UnMarshaller.h"
56 
57 #include "DDS.h"
58 #include "util.h"
59 #include "parser.h"
60 #include "Operators.h"
61 #include "dods-limits.h"
62 #include "InternalErr.h"
63 
64 
65 using std::cerr;
66 using std::endl;
67 
68 namespace libdap {
69 
77 Float32::Float32(const string &n)
79 {}
80 
88 Float32::Float32(const string &n, const string &d)
89  : BaseType(n, d, dods_float32_c)
90 {}
91 
92 Float32::Float32(const Float32 &copy_from) : BaseType(copy_from)
93 {
94  d_buf = copy_from.d_buf;
95 }
96 
97 BaseType *
99 {
100  return new Float32(*this);
101 }
102 
103 Float32 &
105 {
106  if (this == &rhs)
107  return *this;
108 
109  dynamic_cast<BaseType &>(*this) = rhs;
110 
111  d_buf = rhs.d_buf;
112 
113  return *this;
114 }
115 
116 unsigned int
118 {
119  return sizeof(dods_float32);
120 }
121 
122 bool
124  Marshaller &m, bool ce_eval)
125 {
126  dds.timeout_on();
127 
128  if (!read_p())
129  read(); // read() throws Error and InternalErr
130 
131 #if EVAL
132  if (ce_eval && !eval.eval_selection(dds, dataset()))
133  return true;
134 #endif
135 
136  dds.timeout_off();
137 
138  m.put_float32( d_buf ) ;
139 
140  return true;
141 }
142 
143 bool
145 {
146  um.get_float32( d_buf ) ;
147 
148  return false;
149 }
150 
151 unsigned int
152 Float32::val2buf(void *val, bool)
153 {
154  // Jose Garcia This method is public I believe it has been
155  // designed to be used by read which must be implemented in a
156  // subclass, thus if the pointer val is NULL, is an Internal
157  // Error.
158  // Changed to InternalErr. jhrg
159  if (!val)
160  throw InternalErr(__FILE__, __LINE__,
161  "The incoming pointer does not contain any data.");
162 
163  d_buf = *(dods_float32 *)val;
164 
165  return width();
166 }
167 
168 unsigned int
169 Float32::buf2val(void **val)
170 {
171  // Jose Garcia
172  // The same comment justifying throwing an Error in val2buf applies here.
173  if (!val)
174  throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
175 
176  if (!*val)
177  *val = new dods_float32;
178 
179  *(dods_float32 *)*val = d_buf;
180 
181  return width();
182 }
183 
184 bool
186 {
187  d_buf = f;
188  set_read_p(true);
189 
190  return true;
191 }
192 
200 {
201  return d_buf;
202 }
203 
204 void
205 Float32::print_val(FILE *out, string space, bool print_decl_p)
206 {
207  ostringstream oss;
208  print_val(oss, space, print_decl_p);
209  fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
210 }
211 
212 void
213 Float32::print_val(ostream &out, string space, bool print_decl_p)
214 {
215  // FIX: need to set precision in the printing somehow.
216  // os.precision(DODS_FLT_DIG);
217 
218  if (print_decl_p) {
219  print_decl(out, space, false);
220  out << " = " << std::setprecision( 6 ) << d_buf << ";\n" ;
221  }
222  else
223  out << std::setprecision( 6 ) << d_buf ;
224 }
225 
226 bool
228 {
229  // Get this instance's value
230  if (!read_p() && !read()) {
231  // Jose Garcia Since the read method is virtual and
232  // implemented outside libdap++ if we cannot read the data
233  // that is the problem of whomever wrote the implementation of
234  // read and therefore it is an internal error.
235  throw InternalErr(__FILE__, __LINE__, "This value not read!");
236  }
237 
238  // Extract the second arg's value.
239  if (!b || !(b->read_p() || b->read())) {
240  throw InternalErr(__FILE__, __LINE__, "This value not read!");
241  }
242 
243  switch (b->type()) {
244  case dods_int8_c:
245  return Cmp<dods_float32, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
246  case dods_byte_c:
247  return SUCmp<dods_float32, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
248  case dods_int16_c:
249  return Cmp<dods_float32, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
250  case dods_uint16_c:
251  return SUCmp<dods_float32, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
252  case dods_int32_c:
253  return Cmp<dods_float32, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
254  case dods_uint32_c:
255  return SUCmp<dods_float32, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
256  case dods_int64_c:
257  return Cmp<dods_float32, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
258  case dods_uint64_c:
259  return SUCmp<dods_float32, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
260  case dods_float32_c:
261  return Cmp<dods_float32, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
262  case dods_float64_c:
263  return Cmp<dods_float32, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
264  default:
265  return false;
266  }
267 }
268 
277 void
278 Float32::dump(ostream &strm) const
279 {
280  strm << DapIndent::LMarg << "Float32::dump - (" << (void *)this << ")"
281  << endl ;
283  BaseType::dump(strm) ;
284  strm << DapIndent::LMarg << "value: " << d_buf << endl ;
286 }
287 
288 } // namespace libdap
289 
virtual bool read()
Read data into a local buffer.
Definition: BaseType.cc:923
Holds a 16-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:579
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:985
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Float32.cc:205
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Float32.cc:144
virtual void put_float32(dods_float32 val)=0
virtual void get_float32(dods_float32 &val)=0
Holds an unsigned 16-bit integer.
Definition: UInt16.h:57
Float32 & operator=(const Float32 &rhs)
Definition: Float32.cc:104
virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval=true)
Move data to the net.
Definition: Float32.cc:123
virtual unsigned int width(bool constrained=false)
Definition: Float32.cc:117
void timeout_off()
Definition: DDS.cc:862
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Float32.cc:152
Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:282
Holds a 32-bit floating point value.
Definition: Float32.h:59
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Float32.cc:278
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:275
bool eval_selection(DDS &dds, const string &dataset)
Evaluate a boolean-valued constraint expression. This is main method for the evaluator ans is called ...
Float32(const string &n)
Definition: Float32.cc:77
Holds a 16-bit signed integer value.
Definition: Int16.h:57
static void Indent()
Definition: DapIndent.cc:45
dods_float32 d_buf
Definition: Float32.h:62
virtual void dump(ostream &strm) const
dumps information about this object
Definition: BaseType.cc:230
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:618
Holds a 64-bit unsigned integer.
Definition: UInt64.h:49
virtual bool set_value(dods_float32 f)
Definition: Float32.cc:185
void timeout_on()
Definition: DDS.cc:854
Evaluate a constraint expression.
virtual BaseType * ptr_duplicate()
Definition: Float32.cc:98
static ostream & LMarg(ostream &strm)
Definition: DapIndent.cc:80
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Float32.cc:169
The basic data type for the DODS DAP types.
Definition: BaseType.h:199
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
virtual dods_float32 value() const
Definition: Float32.cc:199
Holds a 32-bit unsigned integer.
Definition: UInt32.h:59
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Float32.cc:227
Holds a 32-bit signed integer.
Definition: Int32.h:64