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wagonint.cc
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32 /*************************************************************************/
33 /* Author : Alan W Black */
34 /* Date : October 1997 */
35 /*-----------------------------------------------------------------------*/
36 /* Some high level functions used to interpret CART trees */
37 /* */
38 /*=======================================================================*/
39 #include <cstdlib>
40 #include <iostream>
41 #include <fstream>
42 #include <cstring>
43 #include "EST_cutils.h"
44 #include "EST_Token.h"
45 #include "EST_Wagon.h"
46 
47 int wagon_ask_question(LISP question, LISP value)
48 {
49  const char *str_oper = wgn_ques_oper_str(question);
50 
51  if (streq("is",str_oper))
52  {
53  if (streq(get_c_string(value),
54  get_c_string(wgn_ques_operand(question))))
55  return TRUE;
56  else
57  return FALSE;
58  }
59  else if (streq("=",str_oper))
60  if (get_c_float(value) == get_c_float(wgn_ques_operand(question)))
61  return TRUE;
62  else
63  return FALSE;
64  else if (streq("<",str_oper))
65  if (get_c_float(value) < get_c_float(wgn_ques_operand(question)))
66  return TRUE;
67  else
68  return FALSE;
69  else if (streq(">",str_oper))
70  if (get_c_float(value) > get_c_float(wgn_ques_operand(question)))
71  return TRUE;
72  else
73  return FALSE;
74  else if (streq("matches",str_oper))
75  {
76  EST_Regex rgx(get_c_string(wgn_ques_operand(question)));
77  if (EST_String(get_c_string(value)).matches(rgx))
78  return TRUE;
79  else
80  return FALSE;
81  }
82  else if (streq("in",str_oper))
83  if (siod_member_str(get_c_string(value),
84  wgn_ques_operand(question)) != NIL)
85  return TRUE;
86  else
87  return FALSE;
88  else
89  {
90  cerr << "WAGON: unknown question operator: \"" <<
91  str_oper << "\"\n";
92  siod_error();
93  }
94  // not reached, just for the compiler
95  return FALSE;
96 }