fix compilation of SFC transitions written in IL (compiler was entering endless loop)
/*
* matiec - a compiler for the programming languages defined in IEC 61131-3
*
* Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt)
* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* This code is made available on the understanding that it will not be
* used in safety-critical situations without a full and competent review.
*/
typedef struct
{
transition_c *symbol;
int priority;
int index;
} TRANSITION;
/***********************************************************************/
/***********************************************************************/
/***********************************************************************/
/***********************************************************************/
class generate_c_sfc_elements_c: public generate_c_base_and_typeid_c {
public:
typedef enum {
transitionlist_sg,
transitiontest_sg,
transitiontestdebug_sg,
stepset_sg,
stepreset_sg,
actionassociation_sg,
actionbody_sg
} sfcgeneration_t;
private:
generate_c_il_c *generate_c_il;
generate_c_st_c *generate_c_st;
generate_c_SFC_IL_ST_c *generate_c_code;
search_var_instance_decl_c *search_var_instance_decl;
int transition_number;
std::list<TRANSITION> transition_list;
symbol_c *current_step;
symbol_c *current_action;
sfcgeneration_t wanted_sfcgeneration;
public:
generate_c_sfc_elements_c(stage4out_c *s4o_ptr, symbol_c *name, symbol_c *scope, const char *variable_prefix = NULL)
: generate_c_base_and_typeid_c(s4o_ptr) {
generate_c_il = new generate_c_il_c(s4o_ptr, name, scope, variable_prefix);
generate_c_st = new generate_c_st_c(s4o_ptr, name, scope, variable_prefix);
generate_c_code = new generate_c_SFC_IL_ST_c(s4o_ptr, name, scope, variable_prefix);
search_var_instance_decl = new search_var_instance_decl_c(scope);
this->set_variable_prefix(variable_prefix);
}
~generate_c_sfc_elements_c(void) {
transition_list.clear();
delete generate_c_il;
delete generate_c_st;
delete generate_c_code;
delete search_var_instance_decl;
}
bool is_variable(symbol_c *symbol) {
/* we try to find the variable instance declaration, to determine if symbol is variable... */
symbol_c *var_decl = search_var_instance_decl->get_decl(symbol);
return var_decl != NULL;
}
void reset_transition_number(void) {transition_number = 0;}
void generate(symbol_c *symbol, sfcgeneration_t generation_type) {
wanted_sfcgeneration = generation_type;
switch (wanted_sfcgeneration) {
case transitiontest_sg:
{
std::list<TRANSITION>::iterator pt;
for(pt = transition_list.begin(); pt != transition_list.end(); pt++) {
transition_number = pt->index;
pt->symbol->accept(*this);
}
}
break;
default:
symbol->accept(*this);
break;
}
}
void print_step_argument(symbol_c *step_name, const char* argument, bool setter=false) {
print_variable_prefix();
if (setter) s4o.print(",");
step_name->accept(*this); // in the generated C code, the 'step_name' will have been previously #define'd as equiv to '__step_list[<step_number>]", so now we simply print out the name!
s4o.print(".");
s4o.print(argument);
}
void print_action_argument(symbol_c *action_name, const char* argument, bool setter=false) {
print_variable_prefix();
if (setter) s4o.print(",");
s4o.print("__action_list[");
s4o.print(SFC_STEP_ACTION_PREFIX);
action_name->accept(*this);
s4o.print("].");
s4o.print(argument);
}
void print_transition_number(void) {
s4o.print(transition_number);
}
void print_reset_step(symbol_c *step_name) {
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_step_argument(step_name, "X", true);
s4o.print(",,0);\n");
}
void print_set_step(symbol_c *step_name) {
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_step_argument(step_name, "X", true);
s4o.print(",,1);\n" + s4o.indent_spaces);
print_step_argument(step_name, "T.value");
s4o.print(" = __time_to_timespec(1, 0, 0, 0, 0, 0);\n");
}
/*********************************************/
/* B.1.6 Sequential function chart elements */
/*********************************************/
void *visit(initial_step_c *symbol) {
switch (wanted_sfcgeneration) {
case actionassociation_sg:
if (((list_c*)symbol->action_association_list)->n > 0) {
s4o.print(s4o.indent_spaces + "// ");
symbol->step_name->accept(*this);
s4o.print(" action associations\n");
current_step = symbol->step_name;
s4o.print(s4o.indent_spaces + "{\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces + "char active = ");
s4o.print(GET_VAR);
s4o.print("(");
print_step_argument(current_step, "X");
s4o.print(");\n");
s4o.print(s4o.indent_spaces + "char activated = active && !");
print_step_argument(current_step, "prev_state");
s4o.print(";\n");
s4o.print(s4o.indent_spaces + "char desactivated = !active && ");
print_step_argument(current_step, "prev_state");
s4o.print(";\n\n");
symbol->action_association_list->accept(*this);
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n\n");
}
break;
default:
break;
}
return NULL;
}
void *visit(step_c *symbol) {
switch (wanted_sfcgeneration) {
case actionassociation_sg:
if (((list_c*)symbol->action_association_list)->n > 0) {
s4o.print(s4o.indent_spaces + "// ");
symbol->step_name->accept(*this);
s4o.print(" action associations\n");
current_step = symbol->step_name;
s4o.print(s4o.indent_spaces + "{\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces + "char active = ");
s4o.print(GET_VAR);
s4o.print("(");
print_step_argument(current_step, "X");
s4o.print(");\n");
s4o.print(s4o.indent_spaces + "char activated = active && !");
print_step_argument(current_step, "prev_state");
s4o.print(";\n");
s4o.print(s4o.indent_spaces + "char desactivated = !active && ");
print_step_argument(current_step, "prev_state");
s4o.print(";\n\n");
symbol->action_association_list->accept(*this);
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n\n");
}
break;
default:
break;
}
return NULL;
}
void *visit(transition_c *symbol) {
switch (wanted_sfcgeneration) {
case transitionlist_sg:
{
TRANSITION *transition;
transition = new TRANSITION;
transition->symbol = symbol;
transition->index = transition_number;
if (symbol->integer != NULL) {
transition->priority = atoi(((token_c *)symbol->integer)->value);
std::list<TRANSITION>::iterator pt = transition_list.begin();
while (pt != transition_list.end() && pt->priority <= transition->priority) {
pt++;
}
transition_list.insert(pt, *transition);
}
else {
transition->priority = 0;
transition_list.push_back(*transition);
}
transition_number++;
}
break;
case transitiontest_sg:
s4o.print(s4o.indent_spaces + "if (");
symbol->from_steps->accept(*this);
s4o.print(") {\n");
s4o.indent_right();
// Calculate transition value
symbol->transition_condition->accept(*this);
if (symbol->integer != NULL) {
s4o.print(s4o.indent_spaces + "if (");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__transition_list[");
print_transition_number();
s4o.print("])) {\n");
s4o.indent_right();
wanted_sfcgeneration = stepreset_sg;
symbol->from_steps->accept(*this);
wanted_sfcgeneration = transitiontest_sg;
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
}
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.print(s4o.indent_spaces + "else {\n");
s4o.indent_right();
// Calculate transition value for debug
s4o.print(s4o.indent_spaces + "if (__DEBUG) {\n");
s4o.indent_right();
wanted_sfcgeneration = transitiontestdebug_sg;
symbol->transition_condition->accept(*this);
wanted_sfcgeneration = transitiontest_sg;
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",__transition_list[");
print_transition_number();
s4o.print("],,0);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
break;
case stepset_sg:
s4o.print(s4o.indent_spaces + "if (");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__transition_list[");
print_transition_number();
s4o.print("])) {\n");
s4o.indent_right();
symbol->to_steps->accept(*this);
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
transition_number++;
break;
case stepreset_sg:
if (symbol->integer == NULL) {
s4o.print(s4o.indent_spaces + "if (");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__transition_list[");
print_transition_number();
s4o.print("])) {\n");
s4o.indent_right();
symbol->from_steps->accept(*this);
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
}
transition_number++;
break;
default:
break;
}
return NULL;
}
void *visit(transition_condition_c *symbol) {
switch (wanted_sfcgeneration) {
case transitiontest_sg:
case transitiontestdebug_sg:
// Transition condition is in IL
if (symbol->transition_condition_il != NULL) {
generate_c_il->declare_implicit_variable_back();
s4o.print(s4o.indent_spaces);
symbol->transition_condition_il->accept(*generate_c_il);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",");
if (wanted_sfcgeneration == transitiontestdebug_sg)
s4o.print("__debug_");
else
s4o.print("__");
s4o.print("transition_list[");
print_transition_number();
s4o.print("],,");
generate_c_il->print_implicit_variable_back();
// generate_c_il->reset_default_variable_name(); // generate_c_il does not require his anymore
s4o.print(");\n");
}
// Transition condition is in ST
if (symbol->transition_condition_st != NULL) {
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",");
if (wanted_sfcgeneration == transitiontestdebug_sg)
s4o.print("__debug_");
else
s4o.print("__");
s4o.print("transition_list[");
print_transition_number();
s4o.print("],,");
symbol->transition_condition_st->accept(*generate_c_st);
s4o.print(");\n");
}
if (wanted_sfcgeneration == transitiontest_sg) {
s4o.print(s4o.indent_spaces + "if (__DEBUG) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",__debug_transition_list[");
print_transition_number();
s4o.print("],,");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__transition_list[");
print_transition_number();
s4o.print("]));\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
}
break;
default:
break;
}
return NULL;
}
void *visit(action_c *symbol) {
switch (wanted_sfcgeneration) {
case actionbody_sg:
s4o.print(s4o.indent_spaces + "if(");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__action_list[");
s4o.print(SFC_STEP_ACTION_PREFIX);
symbol->action_name->accept(*this);
s4o.print("].state)) {\n");
s4o.indent_right();
// generate action code
symbol->function_block_body->accept(*generate_c_code);
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n\n");
break;
default:
break;
}
return NULL;
}
void *visit(steps_c *symbol) {
if (symbol->step_name != NULL) {
switch (wanted_sfcgeneration) {
case transitiontest_sg:
s4o.print(GET_VAR);
s4o.print("(");
print_step_argument(symbol->step_name, "X");
s4o.print(")");
break;
case stepset_sg:
print_set_step(symbol->step_name);
break;
case stepreset_sg:
print_reset_step(symbol->step_name);
break;
default:
break;
}
}
else if (symbol->step_name_list != NULL) {
symbol->step_name_list->accept(*this);
}
return NULL;
}
void *visit(step_name_list_c *symbol) {
switch (wanted_sfcgeneration) {
case transitiontest_sg:
for(int i = 0; i < symbol->n; i++) {
s4o.print(GET_VAR);
s4o.print("(");
print_step_argument(symbol->elements[i], "X");
s4o.print(")");
if (i < symbol->n - 1) {
s4o.print(" && ");
}
}
break;
case stepset_sg:
for(int i = 0; i < symbol->n; i++) {
print_set_step(symbol->elements[i]);
}
break;
case stepreset_sg:
for(int i = 0; i < symbol->n; i++) {
print_reset_step(symbol->elements[i]);
}
break;
default:
break;
}
return NULL;
}
void *visit(action_association_list_c* symbol) {
switch (wanted_sfcgeneration) {
case actionassociation_sg:
print_list(symbol, "", "\n", "\n");
break;
default:
break;
}
return NULL;
}
void *visit(action_association_c *symbol) {
switch (wanted_sfcgeneration) {
case actionassociation_sg:
if (symbol->action_qualifier != NULL) {
current_action = symbol->action_name;
symbol->action_qualifier->accept(*this);
}
else {
s4o.print(s4o.indent_spaces + "if (");
s4o.print(GET_VAR);
s4o.print("(");
print_step_argument(current_step, "X");
s4o.print(")) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_action_argument(symbol->action_name, "state", true);
s4o.print(",,1);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}");
}
break;
default:
break;
}
return NULL;
}
void print_set_var(symbol_c *var, const char *value) {
unsigned int vartype = search_var_instance_decl->get_vartype(var);
s4o.print("{"); // it is safer to embed these macros nside a {..} block
if (vartype == search_var_instance_decl_c::external_vt)
s4o.print(SET_EXTERNAL);
else if (vartype == search_var_instance_decl_c::located_vt)
s4o.print(SET_LOCATED);
else
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",");
var->accept(*this);
s4o.print(",,");
s4o.print(value);
s4o.print(");}");
}
void print_set_action_state(symbol_c *action, const char *value) {
s4o.print("{"); // it is safer to embed these macros nside a {..} block
s4o.print(SET_VAR);
s4o.print("(");
print_action_argument(action, "state", true);
s4o.print(",,");
s4o.print(value);
s4o.print(");}");
}
void print_set_var_or_action_state(symbol_c *action, const char *value) {
if (is_variable(current_action))
print_set_var (action, value);
else
print_set_action_state(action, value);
}
void *visit(action_qualifier_c *symbol) {
switch (wanted_sfcgeneration) {
case actionassociation_sg:
{
char *qualifier = (char *)symbol->action_qualifier->accept(*this);
/* N qualifier */
if (strcmp(qualifier, "N") == 0) {
s4o.print(s4o.indent_spaces + "if (active) ");
print_set_var_or_action_state(current_action, "1");
s4o.print(";\n");
s4o.print(s4o.indent_spaces + "if (desactivated) ");
print_set_var_or_action_state(current_action, "0");
s4o.print(";\n");
return NULL;
}
/* S qualifier */
if (strcmp(qualifier, "S") == 0) {
s4o.print(s4o.indent_spaces + "if (active) {");
print_action_argument(current_action, "set");
s4o.print(" = 1;}\n");
return NULL;
}
/* R qualifier */
if (strcmp(qualifier, "R") == 0) {
s4o.print(s4o.indent_spaces + "if (active) {");
print_action_argument(current_action, "reset");
s4o.print(" = 1;}\n");
return NULL;
}
/* L or D qualifiers */
if ((strcmp(qualifier, "L") == 0) ||
(strcmp(qualifier, "D") == 0)) {
s4o.print(s4o.indent_spaces + "if (active && __time_cmp(");
print_step_argument(current_step, "T.value");
s4o.print(", ");
symbol->action_time->accept(*generate_c_st);
if (strcmp(qualifier, "L") == 0)
s4o.print(") < 0) ");
else
s4o.print(") >= 0) ");
s4o.print("\n" + s4o.indent_spaces + " ");
print_set_var_or_action_state(current_action, "1");
if (strcmp(qualifier, "L") == 0)
// in L, we force to zero while state is active and time has been reached
// or when the state is deactivated.
s4o.print("\n" + s4o.indent_spaces + "else if (desactivated || active)");
else
s4o.print("\n" + s4o.indent_spaces + "else if (desactivated)");
s4o.print("\n" + s4o.indent_spaces + " ");
print_set_var_or_action_state(current_action, "0");
s4o.print(";\n");
return NULL;
}
/* P, P1 or P0 qualifiers */
if ( (strcmp(qualifier, "P" ) == 0) ||
(strcmp(qualifier, "P1") == 0) ||
(strcmp(qualifier, "P0") == 0)) {
if (strcmp(qualifier, "P0") == 0)
s4o.print(s4o.indent_spaces + "if (desactivated) ");
else
s4o.print(s4o.indent_spaces + "if (activated) ");
print_set_var_or_action_state(current_action, "1");
s4o.print("\n" + s4o.indent_spaces + "else ");
print_set_var_or_action_state(current_action, "0");
s4o.print(";\n");
return NULL;
}
/* SL qualifier */
if (strcmp(qualifier, "SL") == 0) {
s4o.print(s4o.indent_spaces + "if (activated) {");
s4o.indent_right();
s4o.print("\n" + s4o.indent_spaces);
print_action_argument(current_action, "set");
s4o.print(" = 1;\n" + s4o.indent_spaces);
print_action_argument(current_action, "reset_remaining_time");
s4o.print(" = ");
symbol->action_time->accept(*generate_c_st);
s4o.print(";\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
return NULL;
}
/* SD and DS qualifiers */
if ( (strcmp(qualifier, "SD") == 0) ||
(strcmp(qualifier, "DS") == 0)) {
s4o.print(s4o.indent_spaces + "if (activated) {");
s4o.indent_right();
s4o.print("\n" + s4o.indent_spaces);
print_action_argument(current_action, "set_remaining_time");
s4o.print(" = ");
symbol->action_time->accept(*generate_c_st);
s4o.print(";\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
if (strcmp(qualifier, "DS") == 0) {
s4o.print(s4o.indent_spaces + "if (desactivated) {");
s4o.indent_right();
s4o.print("\n" + s4o.indent_spaces);
print_action_argument(current_action, "set_remaining_time");
s4o.print(" = __time_to_timespec(1, 0, 0, 0, 0, 0);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
}
return NULL;
}
ERROR;
}
break;
default:
break;
}
return NULL;
}
void *visit(qualifier_c *symbol) {
return (void *)symbol->value;
}
void *visit(timed_qualifier_c *symbol) {
return (void *)symbol->value;
}
}; /* generate_c_sfc_actiondecl_c */
/***********************************************************************/
/***********************************************************************/
/***********************************************************************/
/***********************************************************************/
class generate_c_sfc_c: public generate_c_base_and_typeid_c {
private:
std::list<VARIABLE> variable_list;
generate_c_sfc_elements_c *generate_c_sfc_elements;
search_var_instance_decl_c *search_var_instance_decl;
public:
generate_c_sfc_c(stage4out_c *s4o_ptr, symbol_c *name, symbol_c *scope, const char *variable_prefix = NULL)
: generate_c_base_and_typeid_c(s4o_ptr) {
generate_c_sfc_elements = new generate_c_sfc_elements_c(s4o_ptr, name, scope, variable_prefix);
search_var_instance_decl = new search_var_instance_decl_c(scope);
this->set_variable_prefix(variable_prefix);
}
virtual ~generate_c_sfc_c(void) {
variable_list.clear();
delete generate_c_sfc_elements;
delete search_var_instance_decl;
}
bool is_variable(symbol_c *symbol) {
/* we try to find the variable instance declaration, to determine if symbol is variable... */
symbol_c *var_decl = search_var_instance_decl->get_decl(symbol);
return var_decl != NULL;
}
/*********************************************/
/* B.1.6 Sequential function chart elements */
/*********************************************/
void *visit(sequential_function_chart_c *symbol) {
int i;
generate_c_sfc_elements->reset_transition_number();
for(i = 0; i < symbol->n; i++) {
symbol->elements[i]->accept(*this);
generate_c_sfc_elements->generate(symbol->elements[i], generate_c_sfc_elements_c::transitionlist_sg);
}
s4o.print(s4o.indent_spaces +"INT i;\n");
s4o.print(s4o.indent_spaces +"TIME elapsed_time, current_time;\n\n");
/* generate elapsed_time initializations */
s4o.print(s4o.indent_spaces + "// Calculate elapsed_time\n");
s4o.print(s4o.indent_spaces +"current_time = __CURRENT_TIME;\n");
s4o.print(s4o.indent_spaces +"elapsed_time = __time_sub(current_time, ");
print_variable_prefix();
s4o.print("__lasttick_time);\n");
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__lasttick_time = current_time;\n");
/* generate transition initializations */
s4o.print(s4o.indent_spaces + "// Transitions initialization\n");
s4o.print(s4o.indent_spaces + "if (__DEBUG) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces + "for (i = 0; i < ");
print_variable_prefix();
s4o.print("__nb_transitions; i++) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__transition_list[i] = ");
print_variable_prefix();
s4o.print("__debug_transition_list[i];\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
/* generate step initializations */
s4o.print(s4o.indent_spaces + "// Steps initialization\n");
s4o.print(s4o.indent_spaces + "for (i = 0; i < ");
print_variable_prefix();
s4o.print("__nb_steps; i++) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__step_list[i].prev_state = ");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__step_list[i].X);\n");
s4o.print(s4o.indent_spaces + "if (");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__step_list[i].X)) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__step_list[i].T.value = __time_add(");
print_variable_prefix();
s4o.print("__step_list[i].T.value, elapsed_time);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
/* generate action initializations */
s4o.print(s4o.indent_spaces + "// Actions initialization\n");
s4o.print(s4o.indent_spaces + "for (i = 0; i < ");
print_variable_prefix();
s4o.print("__nb_actions; i++) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",__action_list[i].state,,0);\n");
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].set = 0;\n");
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].reset = 0;\n");
s4o.print(s4o.indent_spaces + "if (");
s4o.print("__time_cmp(");
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time, __time_to_timespec(1, 0, 0, 0, 0, 0)) > 0) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time = __time_sub(");
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time, elapsed_time);\n");
s4o.print(s4o.indent_spaces + "if (");
s4o.print("__time_cmp(");
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time, __time_to_timespec(1, 0, 0, 0, 0, 0)) <= 0) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time = __time_to_timespec(1, 0, 0, 0, 0, 0);\n");
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].set = 1;\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.print(s4o.indent_spaces + "if (");
s4o.print("__time_cmp(");
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time, __time_to_timespec(1, 0, 0, 0, 0, 0)) > 0) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time = __time_sub(");
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time, elapsed_time);\n");
s4o.print(s4o.indent_spaces + "if (");
s4o.print("__time_cmp(");
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time, __time_to_timespec(1, 0, 0, 0, 0, 0)) <= 0) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time = __time_to_timespec(1, 0, 0, 0, 0, 0);\n");
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].reset = 1;\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n\n");
/* generate transition tests */
s4o.print(s4o.indent_spaces + "// Transitions fire test\n");
generate_c_sfc_elements->generate((symbol_c *)symbol, generate_c_sfc_elements_c::transitiontest_sg);
s4o.print("\n");
/* generate transition reset steps */
s4o.print(s4o.indent_spaces + "// Transitions reset steps\n");
generate_c_sfc_elements->reset_transition_number();
for(i = 0; i < symbol->n; i++) {
generate_c_sfc_elements->generate(symbol->elements[i], generate_c_sfc_elements_c::stepreset_sg);
}
s4o.print("\n");
/* generate transition set steps */
s4o.print(s4o.indent_spaces + "// Transitions set steps\n");
generate_c_sfc_elements->reset_transition_number();
for(i = 0; i < symbol->n; i++) {
generate_c_sfc_elements->generate(symbol->elements[i], generate_c_sfc_elements_c::stepset_sg);
}
s4o.print("\n");
/* generate step association */
s4o.print(s4o.indent_spaces + "// Steps association\n");
for(i = 0; i < symbol->n; i++) {
generate_c_sfc_elements->generate(symbol->elements[i], generate_c_sfc_elements_c::actionassociation_sg);
}
s4o.print("\n");
/* generate action state evaluation */
s4o.print(s4o.indent_spaces + "// Actions state evaluation\n");
s4o.print(s4o.indent_spaces + "for (i = 0; i < ");
print_variable_prefix();
s4o.print("__nb_actions; i++) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces + "if (");
print_variable_prefix();
s4o.print("__action_list[i].set) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].set_remaining_time = __time_to_timespec(1, 0, 0, 0, 0, 0);\n" + s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].stored = 1;\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n" + s4o.indent_spaces + "if (");
print_variable_prefix();
s4o.print("__action_list[i].reset) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].reset_remaining_time = __time_to_timespec(1, 0, 0, 0, 0, 0);\n" + s4o.indent_spaces);
print_variable_prefix();
s4o.print("__action_list[i].stored = 0;\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n" + s4o.indent_spaces);
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",__action_list[i].state,,");
s4o.print(GET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print("__action_list[i].state) | ");
print_variable_prefix();
s4o.print("__action_list[i].stored);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n\n");
/* generate action execution */
s4o.print(s4o.indent_spaces + "// Actions execution\n");
{
std::list<VARIABLE>::iterator pt;
for(pt = variable_list.begin(); pt != variable_list.end(); pt++) {
if (is_variable(pt->symbol)) {
unsigned int vartype = search_var_instance_decl->get_vartype(pt->symbol);
s4o.print(s4o.indent_spaces + "if (");
print_variable_prefix();
s4o.print("__action_list[");
s4o.print(SFC_STEP_ACTION_PREFIX);
pt->symbol->accept(*this);
s4o.print("].reset) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
if (vartype == search_var_instance_decl_c::external_vt)
s4o.print(SET_EXTERNAL);
else if (vartype == search_var_instance_decl_c::located_vt)
s4o.print(SET_LOCATED);
else
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",");
pt->symbol->accept(*this);
s4o.print(",,0);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
s4o.print(s4o.indent_spaces + "else if (");
print_variable_prefix();
s4o.print("__action_list[");
s4o.print(SFC_STEP_ACTION_PREFIX);
pt->symbol->accept(*this);
s4o.print("].set) {\n");
s4o.indent_right();
s4o.print(s4o.indent_spaces);
if (vartype == search_var_instance_decl_c::external_vt)
s4o.print(SET_EXTERNAL);
else if (vartype == search_var_instance_decl_c::located_vt)
s4o.print(SET_LOCATED);
else
s4o.print(SET_VAR);
s4o.print("(");
print_variable_prefix();
s4o.print(",");
pt->symbol->accept(*this);
s4o.print(",,1);\n");
s4o.indent_left();
s4o.print(s4o.indent_spaces + "}\n");
}
}
}
for(i = 0; i < symbol->n; i++) {
generate_c_sfc_elements->generate(symbol->elements[i], generate_c_sfc_elements_c::actionbody_sg);
}
s4o.print("\n");
return NULL;
}
void *visit(initial_step_c *symbol) {
symbol->action_association_list->accept(*this);
return NULL;
}
void *visit(step_c *symbol) {
symbol->action_association_list->accept(*this);
return NULL;
}
void *visit(action_association_c *symbol) {
if (is_variable(symbol->action_name)) {
std::list<VARIABLE>::iterator pt;
for(pt = variable_list.begin(); pt != variable_list.end(); pt++) {
if (!compare_identifiers(pt->symbol, symbol->action_name))
return NULL;
}
VARIABLE *variable;
variable = new VARIABLE;
variable->symbol = (identifier_c*)(symbol->action_name);
variable_list.push_back(*variable);
}
return NULL;
}
void *visit(transition_c *symbol) {
return NULL;
}
void *visit(action_c *symbol) {
return NULL;
}
void generate(sequential_function_chart_c *sfc) {
sfc->accept(*this);
}
}; /* generate_c_sfc_c */