/*
 *  matiec - a compiler for the programming languages defined in IEC 61131-3
 *  Copyright (C) 2003-2011  Mario de Sousa (msousa@fe.up.pt)
 *
 *  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.
 */

/*
 * An IEC 61131-3 compiler.
 *
 * Based on the
 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
 *
 */

/*
 * Definition of the Abstract Syntax data structure components
 */

#include <stdio.h>
#include <stdlib.h>	/* required for exit() */
#include <string.h>

#include "absyntax.hh"
//#include "../stage1_2/iec.hh" /* required for BOGUS_TOKEN_ID, etc... */
#include "visitor.hh"

#define ABORT(str) {printf("ERROR: %s\n", str); exit(0);}






/* The base class of all symbols */
symbol_c::symbol_c(void) {
  this->first_line   = 0;
  this->first_column = 0;
  this->last_line    = 0;
  this->last_column  = 0;
}

symbol_c::symbol_c(int first_line, int first_column, int last_line, int last_column) {
  this->first_line   = first_line;
  this->first_column = first_column;
  this->last_line    = last_line;
  this->last_column  = last_column;
}



token_c::token_c(const char *value, int fl, int fc, int ll, int lc)
  :symbol_c(fl, fc, ll, lc) {
  this->value = value;
//  printf("New token: %s\n", value);
}






list_c::list_c(int fl, int fc, int ll, int lc)
  :symbol_c(fl, fc, ll, lc) {
  n = 0;
  elements = NULL;
}

list_c::list_c(symbol_c *elem, int fl, int fc, int ll, int lc)
  :symbol_c(fl, fc, ll, lc) {
  n = 0;
  elements = NULL;
  add_element(elem);
}

/* insert a new element */
void list_c::add_element(symbol_c *elem) {
//printf("list_c::add_element()\n");
  n++;
  elements = (symbol_c **)realloc(elements, n * sizeof(symbol_c *));
  if (elements == NULL)
    ABORT("Out of memory");
  elements[n - 1] = elem;
 
  if (elem == NULL)
    return;

  /* adjust the location parameters, taking into account the new element. */
  if ((first_line == elem->first_line) &&
      (first_column > elem->first_column)) {
    first_column = elem->first_column;
  }
  if (first_line > elem->first_line) {
    first_line = elem->first_line;
    first_column = elem->first_column;
  }
  if ((last_line == elem->last_line) &&
      (last_column < elem->last_column)) {
    last_column = elem->last_column;
  }
  if (last_line < elem->last_line) {
    last_line = elem->last_line;
    last_column = elem->last_column;
  }
}




#define SYM_LIST(class_name_c)							\
class_name_c::class_name_c(int fl, int fc, int ll, int lc)			\
			:list_c(fl, fc, ll, lc) {}				\
class_name_c::class_name_c(symbol_c *elem, int fl, int fc, int ll, int lc)	\
			:list_c(elem, fl, fc, ll, lc) {}			\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}

#define SYM_TOKEN(class_name_c)							\
class_name_c::class_name_c(const char *value, int fl, int fc, int ll, int lc)	\
			:token_c(value, fl, fc, ll, lc) {}			\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}

#define SYM_REF0(class_name_c)					\
class_name_c::class_name_c(int fl, int fc,			\
			   int ll, int lc			\
			  ): symbol_c(fl, fc, ll, lc) {}	\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}


#define SYM_REF1(class_name_c, ref1)			\
class_name_c::class_name_c(symbol_c *ref1,		\
			   int fl, int fc,		\
			   int ll, int lc		\
			  ): symbol_c(fl, fc, ll, lc) {	\
  this->ref1 = ref1;					\
}							\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}


#define SYM_REF2(class_name_c, ref1, ref2)		\
class_name_c::class_name_c(symbol_c *ref1,		\
			   symbol_c *ref2,		\
			   int fl, int fc,		\
			   int ll, int lc		\
			  ): symbol_c(fl, fc, ll, lc) {	\
  this->ref1 = ref1;					\
  this->ref2 = ref2;					\
}							\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}


#define SYM_REF3(class_name_c, ref1, ref2, ref3)	\
class_name_c::class_name_c(symbol_c *ref1,		\
			   symbol_c *ref2,		\
			   symbol_c *ref3,		\
			   int fl, int fc,		\
			   int ll, int lc		\
			  ): symbol_c(fl, fc, ll, lc) {	\
  this->ref1 = ref1;					\
  this->ref2 = ref2;					\
  this->ref3 = ref3;					\
}							\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}


#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4)	\
class_name_c::class_name_c(symbol_c *ref1,		\
			   symbol_c *ref2,		\
			   symbol_c *ref3,		\
			   symbol_c *ref4,		\
			   int fl, int fc,		\
			   int ll, int lc		\
			  ): symbol_c(fl, fc, ll, lc) {	\
  this->ref1 = ref1;					\
  this->ref2 = ref2;					\
  this->ref3 = ref3;					\
  this->ref4 = ref4;					\
}							\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}


#define SYM_REF5(class_name_c, ref1, ref2, ref3, ref4, ref5)		\
class_name_c::class_name_c(symbol_c *ref1,				\
			   symbol_c *ref2,				\
			   symbol_c *ref3,				\
			   symbol_c *ref4,				\
			   symbol_c *ref5,				\
			   int fl, int fc,				\
			   int ll, int lc				\
			  ): symbol_c(fl, fc, ll, lc) {			\
  this->ref1 = ref1;							\
  this->ref2 = ref2;							\
  this->ref3 = ref3;							\
  this->ref4 = ref4;							\
  this->ref5 = ref5;							\
}									\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}



#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6)	\
class_name_c::class_name_c(symbol_c *ref1,				\
			   symbol_c *ref2,				\
			   symbol_c *ref3,				\
			   symbol_c *ref4,				\
			   symbol_c *ref5,				\
			   symbol_c *ref6,				\
			   int fl, int fc,				\
			   int ll, int lc				\
			  ): symbol_c(fl, fc, ll, lc) {			\
  this->ref1 = ref1;							\
  this->ref2 = ref2;							\
  this->ref3 = ref3;							\
  this->ref4 = ref4;							\
  this->ref5 = ref5;							\
  this->ref6 = ref6;							\
}									\
void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}



#include "absyntax.def"




#undef SYM_LIST
#undef SYM_TOKEN
#undef SYM_TOKEN
#undef SYM_REF0
#undef SYM_REF1
#undef SYM_REF2
#undef SYM_REF3
#undef SYM_REF4
#undef SYM_REF5
#undef SYM_REF6