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

class generate_c_configbody_c: public generate_c_base_and_typeid_c {

    26

    27

  public:

    28

    generate_c_configbody_c(stage4out_c *s4o_ptr)

    29

    : generate_c_base_and_typeid_c(s4o_ptr) {

    30

      current_resource_name = NULL;

    31

    }

    32

    33

    virtual ~generate_c_configbody_c(void) {}

    34

    35

    36

  private:

    37

    /* The name of the resource curretnly being processed... */

    38

    symbol_c *current_resource_name;

    39

    40

    41

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

    42

/* B 1.7 Configuration elements */

    43

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

    44

    45

    46

public:

    47

/*

    48

CONFIGURATION configuration_name

    49

   optional_global_var_declarations

    50

   (resource_declaration_list | single_resource_declaration)

    51

   optional_access_declarations

    52

   optional_instance_specific_initializations

    53

END_CONFIGURATION

    54

*/

    55

/*

    56

SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)

    57

*/

    58

void *visit(configuration_declaration_c *symbol) {

    59

  TRACE("configuration_declaration_c");

    60

    61

  symbol->resource_declarations->accept(*this);

    62

  return NULL;

    63

}

    64

    65

    66

    67

/* helper symbol for configuration_declaration */

    68

// SYM_LIST(resource_declaration_list_c)

    69

void *visit(resource_declaration_list_c *symbol) {

    70

  TRACE("resource_declaration_list_c");

    71

    72

  return print_list(symbol);

    73

}

    74

    75

/*

    76

RESOURCE resource_name ON resource_type_name

    77

   optional_global_var_declarations

    78

   single_resource_declaration

    79

END_RESOURCE

    80

*/

    81

// SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)

    82

void *visit(resource_declaration_c *symbol) {

    83

  TRACE("resource_declaration_c");

    84

    85

  current_resource_name = symbol->resource_name;

    86

  symbol->resource_declaration->accept(*this);

    87

  current_resource_name = NULL;

    88

  return NULL;

    89

}

    90

    91

    92

    93

/* task_configuration_list program_configuration_list */

    94

// SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)

    95

void *visit(single_resource_declaration_c *symbol) {

    96

  TRACE("single_resource_declaration_c");

    97

    98

  symbol->program_configuration_list->accept(*this);

    99

  return NULL;

   100

}

   101

   102

   103

   104

/* helper symbol for single_resource_declaration */

   105

//SYM_LIST(task_configuration_list_c)

   106

   107

   108

/* helper symbol for single_resource_declaration */

   109

//SYM_LIST(program_configuration_list_c)

   110

void *visit(program_configuration_list_c *symbol) {

   111

  TRACE("program_configuration_list_c");

   112

   113

  return print_list(symbol);

   114

}

   115

   116

   117

/* helper symbol for

   118

 *  - access_path

   119

 *  - instance_specific_init

   120

 */

   121

//SYM_LIST(any_fb_name_list_c)

   122

   123

/*  [resource_name '.'] global_var_name ['.' structure_element_name] */

   124

//SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused)

   125

   126

/*  prev_declared_program_name '.' symbolic_variable */

   127

//SYM_REF2(program_output_reference_c, program_name, symbolic_variable)

   128

   129

/*  TASK task_name task_initialization */

   130

//SYM_REF2(task_configuration_c, task_name, task_initialization)

   131

   132

/*  '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */

   133

//SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused)

   134

   135

/*  PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */

   136

//SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused)

   137

void *visit(program_configuration_c *symbol) {

   138

  TRACE("program_configuration_c");

   139

   140

  s4o.print(s4o.indent_spaces);

   141

  if (NULL != current_resource_name) {

   142

    current_resource_name->accept(*this);

   143

    s4o.print(".");

   144

  }

   145

  symbol->program_name->accept(*this);

   146

  s4o.print(".f();\n");

   147

  return NULL;

   148

}

   149

   150

/* prog_conf_elements ',' prog_conf_element */

   151

//SYM_LIST(prog_conf_elements_c)

   152

   153

/*  fb_name WITH task_name */

   154

//SYM_REF2(fb_task_c, fb_name, task_name)

   155

// TODO...

   156

   157

/*  any_symbolic_variable ASSIGN prog_data_source */

   158

//SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source)

   159

   160

/* any_symbolic_variable SENDTO data_sink */

   161

//SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)

   162

   163

/* VAR_CONFIG instance_specific_init_list END_VAR */

   164

//SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused)

   165

   166

/* helper symbol for instance_specific_initializations */

   167

//SYM_LIST(instance_specific_init_list_c)

   168

   169

/* resource_name '.' program_name '.' {fb_name '.'}

   170

    ((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization))

   171

*/

   172

//SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization)

   173

   174

/* helper symbol for instance_specific_init */

   175

/* function_block_type_name ':=' structure_initialization */

   176

//SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization)

   177

   178

   179

   180

}; /* generate_c_configbody_c */

   181

   182