/*
* 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.
*/
/*
* 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"
#include "../main.hh" // required for ERROR() and ERROR_MSG() macros.
/* The base class of all symbols */
symbol_c::symbol_c(
int first_line, int first_column, const char *ffile, long int first_order,
int last_line, int last_column, const char *lfile, long int last_order ) {
this->first_file = ffile,
this->first_line = first_line;
this->first_column = first_column;
this->first_order = first_order;
this->last_file = lfile,
this->last_line = last_line;
this->last_column = last_column;
this->last_order = last_order;
this->parent = NULL;
this->datatype = NULL;
this->scope = NULL;
}
token_c::token_c(const char *value,
int fl, int fc, const char *ffile, long int forder,
int ll, int lc, const char *lfile, long int lorder)
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) {
this->value = value;
// printf("New token: %s\n", value);
}
# define LIST_CAP_INIT 8
# define LIST_CAP_INCR 8
list_c::list_c(
int fl, int fc, const char *ffile, long int forder,
int ll, int lc, const char *lfile, long int lorder)
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder),c(LIST_CAP_INIT) {
n = 0;
elements = (symbol_c**)malloc(LIST_CAP_INIT*sizeof(symbol_c*));
if (NULL == elements) ERROR_MSG("out of memory");
}
list_c::list_c(symbol_c *elem,
int fl, int fc, const char *ffile, long int forder,
int ll, int lc, const char *lfile, long int lorder)
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder),c(LIST_CAP_INIT) {
n = 0;
elements = (symbol_c**)malloc(LIST_CAP_INIT*sizeof(symbol_c*));
if (NULL == elements) ERROR_MSG("out of memory");
add_element(elem);
}
/* get element in position pos of the list */
symbol_c *list_c::get_element(int pos) {return elements[pos];}
/* append a new element to the end of the list */
void list_c::add_element(symbol_c *elem) {
// printf("list_c::add_element()\n");
if (c <= n)
if (!(elements=(symbol_c**)realloc(elements,(c+=LIST_CAP_INCR)*sizeof(symbol_c *))))
ERROR_MSG("out of memory");
elements[n++] = elem;
if (NULL == elem) return;
/* Sometimes add_element() is called in stage3 or stage4 to temporarily add an AST symbol to the list.
* Since this symbol already belongs in some other place in the aST, it will have the 'parent' pointer set,
* and so we must not overwrite it. We only set the 'parent' pointer on new symbols that have the 'parent'
* pointer still set to NULL.
*/
if (NULL == elem->parent) elem->parent = this;
/* adjust the location parameters, taking into account the new element. */
if (NULL == first_file) {
first_file = elem->first_file;
first_line = elem->first_line;
first_column = elem->first_column;
}
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 (NULL == last_file) {
last_file = elem->last_file;
last_line = elem->last_line;
last_column = elem->last_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;
}
}
/* insert a new element before position pos. */
/* To insert into the begining of list, call with pos=0 */
/* To insert into the end of list, call with pos=list->n */
void list_c::insert_element(symbol_c *elem, int pos) {
if((pos<0) || (n<pos)) ERROR;
/* add new element to end of list. Basically alocate required memory... */
/* will also increment n by 1 ! */
add_element(elem);
/* if not inserting into end position, shift all elements up one position, to open up a slot in pos for new element */
if(pos < (n-1)){
for(int i=n-2 ; i>=pos ; --i) elements[i+1] = elements[i];
elements[pos] = elem;
}
}
/* remove element at position pos. */
void list_c::remove_element(int pos) {
if((pos<0) || (n<=pos)) ERROR;
/* Shift all elements down one position, starting at the entry to delete. */
for (int i = pos; i < n-1; i++) elements[i] = elements[i+1];
/* corrent the new size */
n--;
/* elements = (symbol_c **)realloc(elements, n * sizeof(symbol_c *)); */
/* TODO: adjust the location parameters, taking into account the removed element. */
}
/* remove element at position pos. */
void list_c::clear(void) {
n = 0;
/* TODO: adjust the location parameters, taking into account the removed element. */
}
#define SYM_LIST(class_name_c, ...) \
class_name_c::class_name_c( \
int fl, int fc, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:list_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) {} \
class_name_c::class_name_c(symbol_c *elem, \
int fl, int fc, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:list_c(elem, fl, fc, ffile, forder, ll, lc, lfile, lorder) {} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:token_c(value, fl, fc, ffile, forder, ll, lc, lfile, lorder) {} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) {} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
if (NULL != ref1) ref1->parent = this; \
} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
this->ref2 = ref2; \
if (NULL != ref1) ref1->parent = this; \
if (NULL != ref2) ref2->parent = this; \
} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
this->ref2 = ref2; \
this->ref3 = ref3; \
if (NULL != ref1) ref1->parent = this; \
if (NULL != ref2) ref2->parent = this; \
if (NULL != ref3) ref3->parent = this; \
} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
this->ref2 = ref2; \
this->ref3 = ref3; \
this->ref4 = ref4; \
if (NULL != ref1) ref1->parent = this; \
if (NULL != ref2) ref2->parent = this; \
if (NULL != ref3) ref3->parent = this; \
if (NULL != ref4) ref4->parent = this; \
} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
this->ref2 = ref2; \
this->ref3 = ref3; \
this->ref4 = ref4; \
this->ref5 = ref5; \
if (NULL != ref1) ref1->parent = this; \
if (NULL != ref2) ref2->parent = this; \
if (NULL != ref3) ref3->parent = this; \
if (NULL != ref4) ref4->parent = this; \
if (NULL != ref5) ref5->parent = this; \
} \
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, const char *ffile, long int forder, \
int ll, int lc, const char *lfile, long int lorder) \
:symbol_c(fl, fc, ffile, forder, ll, lc, lfile, lorder) { \
this->ref1 = ref1; \
this->ref2 = ref2; \
this->ref3 = ref3; \
this->ref4 = ref4; \
this->ref5 = ref5; \
this->ref6 = ref6; \
if (NULL != ref1) ref1->parent = this; \
if (NULL != ref2) ref2->parent = this; \
if (NULL != ref3) ref3->parent = this; \
if (NULL != ref4) ref4->parent = this; \
if (NULL != ref5) ref5->parent = this; \
if (NULL != ref6) ref6->parent = this; \
} \
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