1

/*

     2

 * (c) 2003 Mario de Sousa

     3

 *

     4

 * Offered to the public under the terms of the GNU General Public License

     5

 * as published by the Free Software Foundation; either version 2 of the

     6

 * License, or (at your option) any later version.

     7

 *

     8

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

     9

 * WITHOUT ANY WARRANTY; without even the implied warranty of

    10

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

    11

 * Public License for more details.

    12

 *

    13

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

    14

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

    15

 */

    16

    17

/*

    18

 * An IEC 61131-3 IL and ST compiler.

    19

 *

    20

 * Based on the

    21

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

    22

 *

    23

 */

    24

    25

    26

/*

    27

 * This file contains the code that stores the output generated

    28

 * by each specific version of the 4th stage.

    29

 */

    30

    31

    32

    33

    34

    35

    36

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

    37

#include <string>

    38

#include <iostream>

    39

#include <fstream>

    40

#include <stdlib.h>

    41

    42

#include "stage4.hh"

    43

    44

    45

    46

    47

    48

    49

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

    50

	m_file(NULL) {

    51

  out = &std::cout;

    52

  this->indent_level = indent_level;

    53

  this->indent_spaces = "";

    54

}

    55

    56

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

    57

  std::string filename(radix);

    58

  filename += ".";

    59

  filename += extension;

    60

  std::string filepath("");

    61

  if (dir != NULL) {

    62

    filepath += dir;

    63

    filepath += "/";

    64

  }

    65

  filepath += filename;

    66

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

    67

  if(file->fail()){

    68

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

    69

    exit(EXIT_FAILURE);

    70

  }else{

    71

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

    72

  }

    73

  out = file;

    74

  m_file = file;

    75

  this->indent_level = indent_level;

    76

  this->indent_spaces = "";

    77

}

    78

    79

stage4out_c::~stage4out_c(void) {

    80

  if(m_file)

    81

  {

    82

    m_file->close();

    83

    delete m_file;

    84

  }

    85

}

    86

    87

    88

void stage4out_c::indent_right(void) {

    89

  indent_spaces+=indent_level;

    90

}

    91

    92

void stage4out_c::indent_left(void) {

    93

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

    94

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

    95

  else

    96

    indent_spaces.erase();

    97

}

    98

    99

   100

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

   101

  *out << str;

   102

  return NULL;

   103

}

   104

   105

void *stage4out_c::print_integer(int integer) {

   106

  *out << integer;

   107

  return NULL;

   108

}

   109

   110

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

   111

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

   112

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

   113

  return NULL;

   114

}

   115

   116

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

   117

  *out << "__";

   118

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

   119

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

   120

      *out << '_';

   121

    else

   122

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

   123

  return NULL;

   124

}

   125

   126

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

   127

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

   128

  *out << ',';

   129

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

   130

  *out << ',';

   131

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

   132

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

   133

      *out << ',';

   134

    else

   135

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

   136

  return NULL;

   137

}

   138

   139

   140

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

   141

  *out << str;

   142

  return NULL;

   143

}

   144

   145

   146

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

   147

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

   148

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

   149

   */

   150

#if 0

   151

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

   152

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

   153

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

   154

#else

   155

  /* Or more simply... */

   156

    printupper(str.c_str());

   157

#endif

   158

  return NULL;

   159

}

   160

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

   161

  return printlocation(str.c_str());

   162

}

   163

   164

   165

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

   166

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

   167

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

   168

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

   169

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

   170

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

   171

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

   172

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

   173

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

   174

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

   175

   176

   177

   178

/* forward declarations... */

   179

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

   180

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

   181

void delete_code_generator(visitor_c *code_generator);

   182

   183

   184

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

   185

  stage4out_c s4o;

   186

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

   187

   188

  if (NULL == generate_code)

   189

    return -1;

   190

   191

  tree_root->accept(*generate_code);

   192

   193

  delete_code_generator(generate_code);

   194

   195

  return 0;

   196

}

   197