1

/*

     2

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

     3

 *

     4

 *  Copyright (C) 2003-2011  Mario de Sousa (msousa@fe.up.pt)

     5

 *  Copyright (C) 2007-2011  Laurent Bessard and Edouard Tisserant

     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

/*

    26

 * An IEC 61131-3 compiler.

    27

 *

    28

 * Based on the

    29

 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)

    30

 *

    31

 */

    32

    33

    34

/*

    35

 * This file contains the code that stores the output generated

    36

 * by each specific version of the 4th stage.

    37

 */

    38

    39

    40

    41

    42

    43

    44

// #include <stdio.h>  /* required for NULL */

    45

#include <string>

    46

#include <iostream>

    47

#include <fstream>

    48

#include <stdlib.h>

    49

    50

#include "stage4.hh"

    51

    52

    53

    54

    55

    56

    57

stage4out_c::stage4out_c(std::string indent_level):

    58

	m_file(NULL) {

    59

  out = &std::cout;

    60

  this->indent_level = indent_level;

    61

  this->indent_spaces = "";

    62

}

    63

    64

stage4out_c::stage4out_c(const char *dir, const char *radix, const char *extension, std::string indent_level) {	

    65

  std::string filename(radix);

    66

  filename += ".";

    67

  filename += extension;

    68

  std::string filepath("");

    69

  if (dir != NULL) {

    70

    filepath += dir;

    71

    filepath += "/";

    72

  }

    73

  filepath += filename;

    74

  std::fstream *file = new std::fstream(filepath.c_str(), std::fstream::out);

    75

  if(file->fail()){

    76

    std::cerr << "Cannot open " << filename << " for write access \n";

    77

    exit(EXIT_FAILURE);

    78

  }else{

    79

    std::cout << filename << "\n";

    80

  }

    81

  out = file;

    82

  m_file = file;

    83

  this->indent_level = indent_level;

    84

  this->indent_spaces = "";

    85

  allow_output = true;

    86

}

    87

    88

stage4out_c::~stage4out_c(void) {

    89

  if(m_file)

    90

  {

    91

    m_file->close();

    92

    delete m_file;

    93

  }

    94

}

    95

    96

void stage4out_c::flush(void) {

    97

  out->flush();

    98

}

    99

   100

void stage4out_c::enable_output(void) {

   101

  allow_output = true;

   102

}

   103

   104

void stage4out_c::disable_output(void) {

   105

  allow_output = false;

   106

}

   107

   108

void stage4out_c::indent_right(void) {

   109

  indent_spaces+=indent_level;

   110

}

   111

   112

void stage4out_c::indent_left(void) {

   113

  if (indent_spaces.length() >= indent_level.length())

   114

    indent_spaces.erase(indent_spaces.length() - indent_level.length(), indent_level.length());

   115

  else

   116

    indent_spaces.erase();

   117

}

   118

   119

   120

void *stage4out_c::print(const char *str) {

   121

  if (!allow_output) return NULL;

   122

  *out << str;

   123

  return NULL;

   124

}

   125

   126

void *stage4out_c::print_integer(int integer) {

   127

  if (!allow_output) return NULL;

   128

  *out << integer;

   129

  return NULL;

   130

}

   131

   132

void *stage4out_c::print_long_integer(unsigned long l_integer) {

   133

  if (!allow_output) return NULL;

   134

  *out << l_integer << "UL";

   135

  return NULL;

   136

}

   137

   138

void *stage4out_c::print_long_long_integer(unsigned long long ll_integer) {

   139

  if (!allow_output) return NULL;

   140

  *out << ll_integer << "ULL";

   141

  return NULL;

   142

}

   143

   144

void *stage4out_c::printupper(const char *str) {

   145

  if (!allow_output) return NULL;

   146

  for (int i = 0; str[i] != '\0'; i++)

   147

    *out << (unsigned char)toupper(str[i]);

   148

  return NULL;

   149

}

   150

   151

void *stage4out_c::printlocation(const char *str) {

   152

  if (!allow_output) return NULL;

   153

  *out << "__";

   154

  for (int i = 0; str[i] != '\0'; i++)

   155

    if(str[i] == '.')

   156

      *out << '_';

   157

    else

   158

      *out << (unsigned char)toupper(str[i]);

   159

  return NULL;

   160

}

   161

   162

void *stage4out_c::printlocation_comasep(const char *str) {

   163

  if (!allow_output) return NULL;

   164

  *out << (unsigned char)toupper(str[0]);

   165

  *out << ',';

   166

  *out << (unsigned char)toupper(str[1]);

   167

  *out << ',';

   168

  for (int i = 2; str[i] != '\0'; i++)

   169

    if(str[i] == '.')

   170

      *out << ',';

   171

    else

   172

      *out << (unsigned char)toupper(str[i]);

   173

  return NULL;

   174

}

   175

   176

   177

void *stage4out_c::print(std::string str) {

   178

  if (!allow_output) return NULL;

   179

  *out << str;

   180

  return NULL;

   181

}

   182

   183

   184

void *stage4out_c::printupper(std::string str) {

   185

  if (!allow_output) return NULL;

   186

  /* The string standard class does not have a converter member function to upper case.

   187

   * We have to do it ourselves, a character at a time...

   188

   */

   189

#if 0

   190

  /* The C++ way of doint things... */

   191

  for (string::const_iterator p = str.begin(); p != str.end(); ++p)

   192

    *out << (unsigned char)toupper(*p);

   193

#else

   194

  /* Or more simply... */

   195

    printupper(str.c_str());

   196

#endif

   197

  return NULL;

   198

}

   199

   200

   201

void *stage4out_c::printlocation(std::string str) {

   202

  if (!allow_output) return NULL;

   203

  return printlocation(str.c_str());

   204

}

   205

   206

   207

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

   208

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

   209

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

   210

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

   211

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

   212

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

   213

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

   214

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

   215

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

   216

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

   217

   218

   219

   220

/* forward declarations... */

   221

/* These functions will be implemented in generate_XXX.cc */

   222

visitor_c *new_code_generator(stage4out_c *s4o, const char *builddir);

   223

void delete_code_generator(visitor_c *code_generator);

   224

   225

   226

int stage4(symbol_c *tree_root, const char *builddir) {

   227

  stage4out_c s4o;

   228

  visitor_c *generate_code = new_code_generator(&s4o, builddir);

   229

   230

  if (NULL == generate_code)

   231

    return -1;

   232

   233

  tree_root->accept(*generate_code);

   234

   235

  delete_code_generator(generate_code);

   236

   237

  return 0;

   238

}

   239