platypus/table.h

149 lines
4.0 KiB
C
Executable File

/* Filename: table.h
* Transition Table and function declarations necessa`ry for the scanner implementation
* as required for CST8152 - Assignment #2.
* Author: Victor Fernandes, 040772243
* Version: 1.17.1
* Date: 30 January 2017
* Provided by: Svillen Ranev
*/
#ifndef TABLE_H_
#define TABLE_H_
#ifndef BUFFER_H_
#include "buffer.h"
#endif
#ifndef TOKEN_H_
#include "token.h"
#endif
#ifndef NULL
#include <_null.h> /* NULL pointer constant is defined there */
#endif
/* Source end-of-file (SEOF) sentinel symbol
* '\0' or only one of the folowing constants: 255, 0xFF , EOF
*/
/* Single-lexeme tokens processed separately one by one
* in the token-driven part of the scanner
* '=' , ' ' , '(' , ')' , '{' , '}' , == , <> , '>' , '<' ,
* space
* !<comment , ',' , '"' , ';' , '-' , '+' , '*' , '/', << ,
* .AND., .OR. , SEOF, 'wrong symbol',
*/
#define ES 12 /* Error state */
#define ESWR 13 /* Error state (no retract) */
#define IS -1 /* Invalid state */
/*Avoid platform dependency and use fixed 2-byte short */
#define PLT_SHRT_MAX 32767
/* State transition table definition */
#define TABLE_COLUMNS 7
/*transition table - type of states defined in separate table */
int st_table[][TABLE_COLUMNS] = {
/* INPUT COLUMNS:
COLUMN # | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
|[a-zA-Z]| 0 |[1-7]|[8-9]| . | # | other |
*/
/* State 0 */ {1, 6 , 4 , 4 , IS , IS , IS},
/* State 1 */ {1, 1 , 1 , 1 , 2 , 3 , 2 },
/* State 2 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 3 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 4 */ {ES, 4 , 4 , 4 , 7 , 5 , 5 },
/* State 5 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 6 */ {ES, 9 , 9 , ES, 7 , ES , 5 },
/* State 7 */ {8 , 7 , 7 , 7, 8 , 8 , 8 },
/* State 8 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 9 */ {ES, 9 , 11, ES, ES , ES , 10},
/* State 10 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 11 */ {ES, 11 , 11, ES, ES , ES , 10},
/* State 12 */ {IS, IS , IS, IS, IS , IS , IS},
/* State 13 */ {IS, IS , IS, IS, IS , IS , IS}
};
/* Accepting state table definition */
#define ASWR 1 /* accepting state with retract */
#define ASNR 2 /* accepting state with no retract */
#define NOAS 0 /* not accepting state */
int as_table[] = {
/* State 0 */ NOAS,
/* State 1 */ NOAS,
/* State 2 */ ASWR,
/* State 3 */ ASNR,
/* State 4 */ NOAS,
/* State 5 */ ASWR,
/* State 6 */ NOAS,
/* State 7 */ NOAS,
/* State 8 */ ASWR,
/* State 9 */ NOAS,
/* State 10 */ ASWR,
/* State 11 */ NOAS,
/* State 12 */ ASNR,
/* State 13 */ ASWR
};
/* Accepting action function declarations */
Token aa_func02(char* lexeme); /* AVID/KW */
Token aa_func03(char* lexeme); /* SVID */
Token aa_func05(char* lexeme); /* DIL */
Token aa_func08(char* lexeme); /* FPL */
Token aa_func10(char* lexeme); /* OIL */
Token aa_func12(char* lexeme); /* ES ASNR */
Token aa_func13(char* lexeme); /* ES ASWR */
/* defining a new type: pointer to function (of one char * argument)
returning Token
*/
typedef Token(*PTR_AAF)(char *lexeme);
/* Accepting function (action) callback table (array) definition */
/* If you do not want to use the typedef, the equvalent declaration is:
* Token (*aa_table[])(char lexeme[]) = {
*/
PTR_AAF aa_table[] = {
/* State 0 */ NULL,
/* State 1 */ NULL,
/* State 2 */ aa_func02,
/* State 3 */ aa_func03,
/* State 4 */ NULL,
/* State 5 */ aa_func05,
/* State 6 */ NULL,
/* State 7 */ NULL,
/* State 8 */ aa_func08,
/* State 9 */ NULL,
/* State 10 */ aa_func10,
/* State 11 */ NULL,
/* State 12 */ aa_func12,
/* State 13 */ aa_func13
};
/* Keyword lookup table (.AND. and .OR. are not keywords) */
#define KWT_SIZE 8
char * kw_table[] = {
"ELSE",
"IF",
"INPUT",
"OUTPUT",
"PLATYPUS",
"REPEAT",
"THEN",
"USING"
};
#endif