/*
* 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)
*
*/
/*
* Declaration of the Abstract Syntax data structure components
*/
/*
* ABSYNTAX.H
*
* This generates the parse tree structure used to bind the components
* identified by Bison in the correct syntax order. At the end of the
* Bison analysis the tree is walked in a sequential fashion generating
* the relavent code.
*/
#ifndef _ABSYNTAX_HH
#define _ABSYNTAX_HH
#include <stdio.h> // required for NULL
#include <vector>
/* Forward declaration of the visitor interface
* dclared in the visitor.hh file
* We cannot include the visitor.hh file, as it will
* include this same file first, as it too requires references
* to the abstract syntax classes defined here.
*/
class visitor_c; // forward declaration
class symbol_c; // forward declaration
/* The base class of all symbols */
class symbol_c {
public:
/*
* Line number for the purposes of error checking
*/
int first_line;
int first_column;
const char *first_file; /* filename referenced by first line/column */
long int first_order; /* relative order in which it is read by lexcial analyser */
int last_line;
int last_column;
const char *last_file; /* filename referenced by last line/column */
long int last_order; /* relative order in which it is read by lexcial analyser */
symbol_c * datatype; /* data type of the expression/literal/etc. Filled in stage3 by narrow_candidate_datatypes_c */
std::vector <symbol_c *> candidate_datatypes; /* All possible data types the expression/literal/etc. may take. Filled in stage3 by fill_candidate_datatypes_c class */
public:
/* default constructor */
symbol_c(int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, /* order in which it is read by lexcial analyser */
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0 /* order in which it is read by lexcial analyser */
);
/* default destructor */
/* must be virtual so compiler does not complain... */
virtual ~symbol_c(void) {return;};
virtual void *accept(visitor_c &visitor) {return NULL;};
};
class token_c: public symbol_c {
public:
/* the value of the symbol. */
const char *value;
public:
token_c(const char *value,
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, /* order in which it is read by lexcial analyser */
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0 /* order in which it is read by lexcial analyser */
);
};
/* a list of symbols... */
class list_c: public symbol_c {
public:
int n;
symbol_c **elements;
public:
list_c(int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, /* order in which it is read by lexcial analyser */
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0 /* order in which it is read by lexcial analyser */
);
list_c(symbol_c *elem,
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, /* order in which it is read by lexcial analyser */
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0 /* order in which it is read by lexcial analyser */
);
/* append a new element to the end of the list */
virtual void add_element(symbol_c *elem);
/* 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 */
virtual void insert_element(symbol_c *elem, int pos = 0);
/* remove element at position pos. */
virtual void remove_element(int pos = 0);
};
#define SYM_LIST(class_name_c, ...) \
class class_name_c: public list_c { \
public: \
__VA_ARGS__ \
public: \
class_name_c( \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
class_name_c(symbol_c *elem, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_TOKEN(class_name_c, ...) \
class class_name_c: public token_c { \
public: \
__VA_ARGS__ \
public: \
class_name_c(const char *value, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF0(class_name_c, ...) \
class class_name_c: public symbol_c { \
public: \
__VA_ARGS__ \
public: \
class_name_c( \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF1(class_name_c, ref1, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF2(class_name_c, ref1, ref2, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
symbol_c *ref2; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
symbol_c *ref2 = NULL, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF3(class_name_c, ref1, ref2, ref3, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
symbol_c *ref2; \
symbol_c *ref3; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
symbol_c *ref2, \
symbol_c *ref3, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
symbol_c *ref2; \
symbol_c *ref3; \
symbol_c *ref4; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
symbol_c *ref2, \
symbol_c *ref3, \
symbol_c *ref4 = NULL, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF5(class_name_c, ref1, ref2, ref3, ref4, ref5, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
symbol_c *ref2; \
symbol_c *ref3; \
symbol_c *ref4; \
symbol_c *ref5; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
symbol_c *ref2, \
symbol_c *ref3, \
symbol_c *ref4, \
symbol_c *ref5, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6, ...) \
class class_name_c: public symbol_c { \
public: \
symbol_c *ref1; \
symbol_c *ref2; \
symbol_c *ref3; \
symbol_c *ref4; \
symbol_c *ref5; \
symbol_c *ref6; \
__VA_ARGS__ \
public: \
class_name_c(symbol_c *ref1, \
symbol_c *ref2, \
symbol_c *ref3, \
symbol_c *ref4, \
symbol_c *ref5, \
symbol_c *ref6 = NULL, \
int fl = 0, int fc = 0, const char *ffile = NULL /* filename */, long int forder=0, \
int ll = 0, int lc = 0, const char *lfile = NULL /* filename */, long int lorder=0); \
virtual void *accept(visitor_c &visitor); \
};
#include "absyntax.def"
#undef SYM_LIST
#undef SYM_TOKEN
#undef SYM_REF0
#undef SYM_REF1
#undef SYM_REF2
#undef SYM_REF3
#undef SYM_REF4
#undef SYM_REF5
#undef SYM_REF6
#endif /* _ABSYNTAX_HH */