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