1

/*

     2

 *  matiec - a compiler for the programming languages defined in IEC 61131-3

     3

 *

     4

 *  Copyright (C) 2009-2012  Mario de Sousa (msousa@fe.up.pt)

     5

 *  Copyright (C) 2012       Manuele Conti  (conti.ma@alice.it)

     6

 *

     7

 *  This program is free software: you can redistribute it and/or modify

     8

 *  it under the terms of the GNU General Public License as published by

     9

 *  the Free Software Foundation, either version 3 of the License, or

    10

 *  (at your option) any later version.

    11

 *

    12

 *  This program is distributed in the hope that it will be useful,

    13

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

    14

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    15

 *  GNU General Public License for more details.

    16

 *

    17

 *  You should have received a copy of the GNU General Public License

    18

 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.

    19

 *

    20

 *

    21

 * This code is made available on the understanding that it will not be

    22

 * used in safety-critical situations without a full and competent review.

    23

 */

    24

    25

#include "datatype_functions.hh"

    26

#include "../absyntax_utils/absyntax_utils.hh"

    27

#include <vector>

    28

// #include <algorithm>

    29

    30

    31

    32

    33

    34

elementary_type_c *elementary_type_c::singleton = NULL;

    35

    36

const char *elementary_type_c::to_string(symbol_c *symbol) {

    37

  if (NULL == singleton)    singleton = new elementary_type_c;

    38

  if (NULL == singleton)    ERROR;

    39

  const char *res           = (const char *)symbol->accept(*singleton);

    40

  if (NULL == res) {

    41

	  int i = 1;

    42

  }

    43

  return res;

    44

}

    45

    46

    47

    48

    49

    50

/* Macro that expand to subtypes */

    51

/* copied from matiec/lib/create_standard_functions_txt.sh */

    52

#define __ANY(DO)                 __ANY_DERIVED(DO) __ANY_ELEMENTARY(DO)

    53

#define __ANY_DERIVED(DO)

    54

#define __ANY_ELEMENTARY(DO)      __ANY_MAGNITUDE(DO) __ANY_BIT(DO) __ANY_STRING(DO) __ANY_DATE(DO)

    56

#define __ANY_BIT(DO)             __ANY_NBIT(DO) DO(bool)

    57

#define __ANY_NBIT(DO)            DO(byte) DO(word) DO(dword) DO(lword)

    58

//#define __ANY_STRING(DO)          DO(string) DO(wstring)

    59

#define __ANY_STRING(DO)          DO(string)

    60

#define __ANY_DATE(DO)            DO(date) DO(tod) DO(dt)

    61

#define __ANY_NUM(DO)             __ANY_REAL(DO) __ANY_INT(DO)

    62

#define __ANY_REAL(DO)            DO(real) DO(lreal)

    63

#define __ANY_INT(DO)             __ANY_SINT(DO) __ANY_UINT(DO)

    64

#define __ANY_SINT(DO)            DO(sint) DO(int) DO(dint) DO(lint)

    65

#define __ANY_UINT(DO)            DO(usint) DO(uint) DO(udint) DO(ulint)

    66

    67

#define __ANY_1(DO,P1)            __ANY_DERIVED_1(DO,P1) __ANY_ELEMENTARY_1(DO,P1)

    68

#define __ANY_DERIVED_1(DO,P1)

    69

#define __ANY_ELEMENTARY_1(DO,P1) __ANY_MAGNITUDE_1(DO,P1) __ANY_BIT_1(DO,P1) __ANY_STRING_1(DO,P1) __ANY_DATE_1(DO,P1)

    72

#define __ANY_NBIT_1(DO,P1)       DO(byte,P1) DO(word,P1) DO(dword,P1) DO(lword,P1)

    73

// #define __ANY_STRING_1(DO,P1)     DO(string,P1) DO(wstring,P1)

    74

#define __ANY_STRING_1(DO,P1)     DO(string,P1)

    75

#define __ANY_DATE_1(DO,P1)       DO(date,P1) DO(tod,P1) DO(dt,P1)

    76

#define __ANY_NUM_1(DO,P1)        __ANY_REAL_1(DO,P1) __ANY_INT_1(DO,P1)

    77

#define __ANY_REAL_1(DO,P1)       DO(real,P1) DO(lreal,P1)

    78

#define __ANY_INT_1(DO,P1)        __ANY_SINT_1(DO,P1) __ANY_UINT_1(DO,P1)

    79

#define __ANY_SINT_1(DO,P1)       DO(sint,P1) DO(int,P1) DO(dint,P1) DO(lint,P1)

    80

#define __ANY_UINT_1(DO,P1)       DO(usint,P1) DO(uint,P1) DO(udint,P1) DO(ulint,P1)

    81

    82

    83

    84

    85

/*

    86

 * 2.5.1.5.6 Functions of time data types

    87

 * Table 30 - page 64

    88

 */

    89

    90

const struct widen_entry widen_ADD_table[] = {

    91

#define __add(TYPE)       \

    92

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

    93

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

    94

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

    95

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

    96

    __ANY_NUM(__add)

    97

#undef __add

    98

    99

    /*******************************************/

   100

    /*******************************************/

   101

    /*** Operations with TIME, DT and TOD... ***/

   102

    /*******************************************/

   103

    /*******************************************/ 

   104

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::ok         },

   105

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::time_type_name,            &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   106

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   107

    /* not currently supported by stage4, so it is best no tto add it for now... */

   108

//  { &search_constant_type_c::time_type_name,          &search_constant_type_c::tod_type_name,             &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   109

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::time_type_name,            &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   110

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   111

    /* not currently supported by stage4, so it is best no tto add it for now... */

   112

//  { &search_constant_type_c::time_type_name,          &search_constant_type_c::dt_type_name,              &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   113

   114

    /*******************************/

   115

    /* SAFE version on the left... */

   116

    /*******************************/

   117

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::ok         },

   118

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::time_type_name,            &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   119

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   120

    /* not currently supported by stage4, so it is best no tto add it for now... */

   121

//  { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::tod_type_name,             &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   122

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::time_type_name,            &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   123

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   124

    /* not currently supported by stage4, so it is best no tto add it for now... */

   125

//  { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::dt_type_name,              &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   126

   127

    /********************************/

   128

    /* SAFE version on the right... */

   129

    /********************************/

   130

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::safetime_type_name,        &search_constant_type_c::time_type_name,     widen_entry::ok         },

   131

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::safetime_type_name,        &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   132

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   133

    /* not currently supported by stage4, so it is best no tto add it for now... */

   134

//  { &search_constant_type_c::time_type_name,          &search_constant_type_c::safetod_type_name,         &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   135

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::safetime_type_name,        &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   136

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   137

    /* not currently supported by stage4, so it is best no tto add it for now... */

   138

//  { &search_constant_type_c::time_type_name,          &search_constant_type_c::safedt_type_name,          &search_constant_type_c::dt_type_name,       widen_entry::deprecated },         

   139

   140

    /*************************************/

   141

    /* SAFE version on left and right... */

   142

    /*************************************/

   143

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safetime_type_name, widen_entry::ok         },

   144

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safetod_type_name,  widen_entry::deprecated },

   145

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   146

    /* not currently supported by stage4, so it is best no tto add it for now... */

   147

//  { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safetod_type_name,         &search_constant_type_c::safetod_type_name,  widen_entry::deprecated },

   148

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safedt_type_name,   widen_entry::deprecated },         

   149

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'addition' is supposed to be commutative, we add it anyway... */

   150

    /* not currently supported by stage4, so it is best no tto add it for now... */

   151

//  { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safedt_type_name,          &search_constant_type_c::safedt_type_name,   widen_entry::deprecated },

   152

   153

    { NULL, NULL, NULL, widen_entry::ok },

   154

};

   155

   156

   157

   158

   159

   160

   161

   162

const struct widen_entry widen_SUB_table[] = {

   163

#define __sub(TYPE)       \

   164

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   165

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   166

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   167

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   168

    __ANY_NUM(__sub)

   169

#undef __sub

   170

   171

    /*******************************************/

   172

    /*******************************************/

   173

    /*** Operations with TIME, DT and TOD... ***/

   174

    /*******************************************/

   175

    /*******************************************/ 

   176

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::ok         },

   177

    { &search_constant_type_c::date_type_name,          &search_constant_type_c::date_type_name,            &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   178

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::time_type_name,            &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   179

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::tod_type_name,             &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   180

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::time_type_name,            &search_constant_type_c::dt_type_name,       widen_entry::deprecated },

   181

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::dt_type_name,              &search_constant_type_c::time_type_name,     widen_entry::deprecated },        

   182

   183

    /*******************************/

   184

    /* SAFE version on the left... */

   185

    /*******************************/

   186

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::ok         },

   187

    { &search_constant_type_c::safedate_type_name,      &search_constant_type_c::date_type_name,            &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   188

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::time_type_name,            &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   189

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::tod_type_name,             &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   190

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::time_type_name,            &search_constant_type_c::dt_type_name,       widen_entry::deprecated },

   191

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::dt_type_name,              &search_constant_type_c::time_type_name,     widen_entry::deprecated },        

   192

   193

    /********************************/

   194

    /* SAFE version on the right... */

   195

    /********************************/

   196

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::safetime_type_name,        &search_constant_type_c::time_type_name,     widen_entry::ok         },

   197

    { &search_constant_type_c::date_type_name,          &search_constant_type_c::safedate_type_name,        &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   198

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::safetime_type_name,        &search_constant_type_c::tod_type_name,      widen_entry::deprecated },

   199

    { &search_constant_type_c::tod_type_name,           &search_constant_type_c::safetod_type_name,         &search_constant_type_c::time_type_name,     widen_entry::deprecated },

   200

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::safetime_type_name,        &search_constant_type_c::dt_type_name,       widen_entry::deprecated },

   201

    { &search_constant_type_c::dt_type_name,            &search_constant_type_c::safedt_type_name,          &search_constant_type_c::time_type_name,     widen_entry::deprecated },        

   202

   203

    /*************************************/

   204

    /* SAFE version on left and right... */

   205

    /*************************************/

   206

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safetime_type_name, widen_entry::ok         },

   207

    { &search_constant_type_c::safedate_type_name,      &search_constant_type_c::safedate_type_name,        &search_constant_type_c::safetime_type_name, widen_entry::deprecated },

   208

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safetod_type_name,  widen_entry::deprecated },

   209

    { &search_constant_type_c::safetod_type_name,       &search_constant_type_c::safetod_type_name,         &search_constant_type_c::safetime_type_name, widen_entry::deprecated },

   210

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safedt_type_name,   widen_entry::deprecated },

   211

    { &search_constant_type_c::safedt_type_name,        &search_constant_type_c::safedt_type_name,          &search_constant_type_c::safetime_type_name, widen_entry::deprecated },        

   212

   213

    { NULL, NULL, NULL, widen_entry::ok },

   214

};

   215

   216

   217

   218

   219

   220

   221

   222

const struct widen_entry widen_MUL_table[] = {

   223

#define __mul(TYPE)       \

   224

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   225

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   226

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   227

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   228

    __ANY_NUM(__mul)

   229

#undef __mul

   230

   231

    /*******************************************/

   232

    /*******************************************/

   233

    /*** Operations with TIME, DT and TOD... ***/

   234

    /*******************************************/

   235

    /*******************************************/ 

   236

#define __multime(TYPE)       \

   237

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   238

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   239

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   240

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safetime_type_name, widen_entry::deprecated }, \

   241

    /* NOTE: the standard des not explicitly support the following semantics. However, since 'multiplication' is supposed to be commutative, we add it anyway... */                 \

   242

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   243

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::time_type_name,            &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   244

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safetime_type_name,        &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   245

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safetime_type_name,        &search_constant_type_c::safetime_type_name, widen_entry::deprecated },

   246

    __ANY_NUM(__multime)

   247

#undef __multime

   248

   249

    { NULL, NULL, NULL, widen_entry::ok },

   250

};

   251

   252

   253

   254

   255

   256

const struct widen_entry widen_DIV_table[] = {

   257

#define __div(TYPE)       \

   258

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   259

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   260

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   261

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   262

    __ANY_NUM(__div)

   263

#undef __div

   264

   265

    /*******************************************/

   266

    /*******************************************/

   267

    /*** Operations with TIME, DT and TOD... ***/

   268

    /*******************************************/

   269

    /*******************************************/ 

   270

#define __divtime(TYPE)       \

   271

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   272

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   273

    { &search_constant_type_c::time_type_name,          &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::time_type_name,     widen_entry::deprecated }, \

   274

    { &search_constant_type_c::safetime_type_name,      &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safetime_type_name, widen_entry::deprecated },

   275

    __ANY_NUM(__divtime)

   276

#undef __divtime

   277

   278

    { NULL, NULL, NULL, widen_entry::ok },

   279

 };

   280

   281

   282

   283

   284

const struct widen_entry widen_MOD_table[] = {

   285

#define __mod(TYPE)       \

   286

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   287

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   288

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   289

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   290

    __ANY_NUM(__mod)

   291

#undef __mod

   292

   293

    { NULL, NULL, NULL, widen_entry::ok },

   294

};

   295

   296

   297

   298

   299

/**************************************************************/

   300

/**************************************************************/

   301

/**************************************************************/

   302

/*******                                                *******/

   303

/*******  TABLE 26: Standard bitwise Boolean functions  *******/

   304

/*******                                                *******/

   305

/**************************************************************/

   306

/**************************************************************/

   307

/**************************************************************/

   308

/* table used by AND and ANDN operators, and and_expression */

   309

const struct widen_entry widen_AND_table[] = {

   310

#define __and(TYPE)       \

   311

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   312

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   313

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   314

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   315

    __ANY_BIT(__and)

   316

#undef __and

   317

   318

    { NULL, NULL, NULL, widen_entry::ok },

   319

};

   320

   321

/* table used by OR and ORN operators, and or_expression */

   322

const struct widen_entry widen_OR_table[] = {

   323

#define __or(TYPE)       \

   324

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   325

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   326

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   327

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   328

    __ANY_BIT(__or)

   329

#undef __or

   330

   331

    { NULL, NULL, NULL, widen_entry::ok },

   332

};

   333

   334

   335

/* table used by XOR and XORN operators, and xor_expression */

   336

const struct widen_entry widen_XOR_table[] = {

   337

#define __xor(TYPE)       \

   338

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   339

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::TYPE##_type_name,          &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   340

    { &search_constant_type_c::TYPE##_type_name,        &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::TYPE##_type_name,       widen_entry::ok     }, \

   341

    { &search_constant_type_c::safe##TYPE##_type_name,  &search_constant_type_c::safe##TYPE##_type_name,    &search_constant_type_c::safe##TYPE##_type_name, widen_entry::ok     },

   342

    __ANY_BIT(__xor)

   343

#undef __xor

   344

   345

    { NULL, NULL, NULL, widen_entry::ok },

   346

};

   347

   369

   370

   371

/* Search for a datatype inside a candidate_datatypes list.

   372

 * Returns: position of datatype in the list, or -1 if not found.

   373

 */

   374

int search_in_candidate_datatype_list(symbol_c *datatype, std::vector <symbol_c *> candidate_datatypes) {

   375

	if (NULL == datatype) 

   376

		return -1;

   377

   378

	for(unsigned int i = 0; i < candidate_datatypes.size(); i++)

   379

		if (is_type_equal(datatype, candidate_datatypes[i]))

   380

			return i;

   381

	/* Not found ! */

   382

	return -1;

   383

}

   384

   385

   386

   387

   388

   389

   390

   391

/* Intersect two candidate_datatype_lists.

   392

 * Remove from list1 (origin, dest.) all elements that are not found in list2 (with).

   393

 * In essence, list1 will contain the result of the intersection of list1 with list2.

   394

 * In other words, modify list1 so it only contains the elelements that are simultaneously in list1 and list2!

   395

 */

   396

void intersect_candidate_datatype_list(symbol_c *list1 /*origin, dest.*/, symbol_c *list2 /*with*/) {

   397

	if ((NULL == list1) || (NULL == list2))

   398

		/* In principle, we should never call it with NULL values. Best to abort the compiler just in case! */

   399

		return;

   400

   401

	for(std::vector<symbol_c *>::iterator i = list1->candidate_datatypes.begin(); i < list1->candidate_datatypes.end(); ) {

   402

		/* Note that we do _not_ increment i in the for() loop!

   403

		 * When we erase an element from position i, a new element will take it's place, that must also be tested! 

   404

		 */

   405

		if (search_in_candidate_datatype_list(*i, list2->candidate_datatypes) < 0)

   406

			/* remove this element! This will change the value of candidate_datatypes.size() */

   407

			list1->candidate_datatypes.erase(i);

   408

		else i++;

   409

	}

   410

}

   411

   412

   413

   414

   415

/* intersect the candidate_datatype lists of all prev_il_intructions, and set the local candidate_datatype list to the result! */

   416

void intersect_prev_candidate_datatype_lists(il_instruction_c *symbol) {

   417

	if (symbol->prev_il_instruction.empty())

   418

		return;

   419

   420

	symbol->candidate_datatypes = symbol->prev_il_instruction[0]->candidate_datatypes;

   421

	for (unsigned int i = 1; i < symbol->prev_il_instruction.size(); i++) {

   422

		intersect_candidate_datatype_list(symbol /*origin, dest.*/, symbol->prev_il_instruction[i] /*with*/);

   423

	}  

   424

}

   425

   426

   427

   428

   429

/* A helper function... */

   430

bool is_ANY_ELEMENTARY_type(symbol_c *type_symbol) {

   431

  if (type_symbol == NULL) {return false;}

   432

  return is_ANY_MAGNITUDE_type(type_symbol)

   433

      || is_ANY_BIT_type      (type_symbol)

   434

      || is_ANY_STRING_type   (type_symbol)

   435

      || is_ANY_DATE_type     (type_symbol);

   436

}

   437

   438

/* A helper function... */

   439

bool is_ANY_SAFEELEMENTARY_type(symbol_c *type_symbol) {

   440

  if (type_symbol == NULL) {return false;}

   441

  return is_ANY_SAFEMAGNITUDE_type(type_symbol)

   442

      || is_ANY_SAFEBIT_type      (type_symbol)

   443

      || is_ANY_SAFESTRING_type   (type_symbol)

   444

      || is_ANY_SAFEDATE_type     (type_symbol);

   445

}

   446

   447

/* A helper function... */

   448

bool is_ANY_ELEMENTARY_compatible(symbol_c *type_symbol) {

   449

  if (type_symbol == NULL) {return false;}

   450

  /* NOTE: doing

   451

   *          return is_ANY_SAFEELEMENTARY_type() || is_ANY_ELEMENTARY_type()

   452

   *       is incorrect, as the literals would never be considered compatible...

   453

   */

   454

  return is_ANY_MAGNITUDE_compatible(type_symbol)

   455

      || is_ANY_BIT_compatible      (type_symbol)

   456

      || is_ANY_STRING_compatible   (type_symbol)

   457

      || is_ANY_DATE_compatible     (type_symbol);

   458

}

   459

   460

   461

/* A helper function... */

   462

bool is_ANY_MAGNITUDE_type(symbol_c *type_symbol) {

   463

  if (type_symbol == NULL) {return false;}

   464

  if (typeid(*type_symbol) == typeid(time_type_name_c)) {return true;}

   465

  return is_ANY_NUM_type(type_symbol);

   466

}

   467

   468

/* A helper function... */

   469

bool is_ANY_signed_MAGNITUDE_type(symbol_c *type_symbol) {

   470

  if (type_symbol == NULL) {return false;}

   471

  if (typeid(*type_symbol) == typeid(time_type_name_c)) {return true;}

   472

  return is_ANY_signed_NUM_type(type_symbol);

   473

}

   474

   475

/* A helper function... */

   476

bool is_ANY_SAFEMAGNITUDE_type(symbol_c *type_symbol) {

   477

  if (type_symbol == NULL) {return false;}

   478

  if (typeid(*type_symbol) == typeid(safetime_type_name_c)) {return true;}

   479

  return is_ANY_SAFENUM_type(type_symbol);

   480

}

   481

   482

/* A helper function... */

   483

bool is_ANY_signed_SAFEMAGNITUDE_type(symbol_c *type_symbol) {

   484

  if (type_symbol == NULL) {return false;}

   485

  if (typeid(*type_symbol) == typeid(safetime_type_name_c)) {return true;}

   486

  return is_ANY_signed_SAFENUM_type(type_symbol);

   487

}

   488

   489

/* A helper function... */

   490

bool is_ANY_MAGNITUDE_compatible(symbol_c *type_symbol) {

   491

  if (type_symbol == NULL) {return false;}

   492

  if (is_ANY_MAGNITUDE_type    (type_symbol))              {return true;}

   493

  if (is_ANY_SAFEMAGNITUDE_type(type_symbol))              {return true;}

   494

  return is_ANY_NUM_compatible(type_symbol);

   495

}

   496

   497

/* A helper function... */