Transition table: complete, I think?
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@ -10,9 +10,9 @@ L(KEYWORD) = PLATYPUS | IF | THEN | ELSE | USING | REPEAT | INPUT | OUTPUT
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```
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## Variable Identifiers
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```
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L(LETTER) = [a-zA-Z]
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L(L) = [a-zA-Z]
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L(LETTER_OR_DIGIT) = [a-zA-Z0-9]
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L(LoD) = [a-zA-Z0-9]
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L(VID) = AVID | SVID
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@ -24,24 +24,24 @@ L(SVID) = AVID#
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## Integer Literals
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```
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L(DEC_INT_LITERAL) = [0-9]*
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L(DIL) = 0 | [1-9]*
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L(NON_ZERO_DIGIT) = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
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L(NzD) = [1-9]
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L(DIGIT) = [0-9]+
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L(D) = [0-9]
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L(OCT_DIGIT) = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7
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L(OD) = [0-7]
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L(OCT_DIGIT_LITERAL) = 0(OCT_DIGIT)+
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L(OIL) = 0([0-7])*
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L(INT_LITERAL) = (DEC_INT_LITERAL | OCT_INT_LITERAL)
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L(IL) = (DIL | OIL)
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```
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## Floating Point Literal
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```
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L(FLP_LITERAL) = ([0-9]*).([0-9]+)
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L(FLPL) = (0 | [1-9]*).[0-9]*
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```
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## String Literal
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```
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L(STR_LITERAL) = "([a-ZA-Z_0-9])*"
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L(STRL) = "([a-ZA-Z_0-9])*"
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```
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Binary file not shown.
122
table.h
122
table.h
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@ -21,11 +21,11 @@
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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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/* 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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/* 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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@ -34,47 +34,88 @@
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*/
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REPLACE *ESN* WITH YOUR ERROR STATE NUMBER
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#define ES *ESN* /* Error state */
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//REPLACE *ESN* WITH YOUR ERROR STATE NUMBER
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#define ES -2 /* Error state */
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#define IS -1 /* Inavalid state */
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/* State transition table definition */
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REPLACE *CN* WITH YOUR COLUMN NUMBER
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//REPLACE *CN* WITH YOUR COLUMN NUMBER
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#define TABLE_COLUMNS *CN*
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#define TABLE_COLUMNS 14
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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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/* State 0 */ {YOUR INITIALIZATION},
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/* State 1 */ {YOUR INITIALIZATION},
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.
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. YOUR TABLE INITIALIZATION HERE
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.
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/* State N */ {YOUR INITIALIZATION},
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int st_table[][TABLE_COLUMNS] = {
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/* INPUT COLUMNS:
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[a-zA-Z]| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | . | # | other
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*/
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/* State 0 */ {1, 6 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , IS , IS ,IS},
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/* State 1 */ {1, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , ES , 3 , 2},
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/* State 2 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 3 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 4 */ {ES, 4 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , 4 , 7 , 5 , 5},
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/* State 5 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 6 */ {ES, 9 , 9, 9, 9, 9, 9, 9, 9, ES, ES, 7 , ES , 5},
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/* State 7 */ {ES, 7 , 7, 7, 7, 7, 7, 7, 7, 7, 7, ES , 8 , 8},
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/* State 8 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 9 */ {ES, 9 , 9, 9, 9, 9, 9, 9, 9, ES, ES, ES , ES , 10},
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/* State 10 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 11 */ {ES, ES , ES, ES, ES, ES, ES, ES, ES, ES, ES, ES , ES , ES},
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/* State 12 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS},
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/* State 13 */ {IS, IS , IS, IS, IS, IS, IS, IS, IS, IS, IS, IS , IS , IS}
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//
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//. YOUR TABLE INITIALIZATION HERE
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//.
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///* State N */ {YOUR INITIALIZATION},
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};
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/* Accepting state table definition */
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REPLACE *N1*, *N2*, and *N3* WITH YOUR NUMBERS
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#define ASWR *N1* /* accepting state with retract */
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#define ASNR *N2* /* accepting state with no retract */
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#define NOAS *N3* /* not accepting state */
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//REPLACE *N1*, *N2*, and *N3* WITH YOUR NUMBERS
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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[ ] = {YOUR INITIALIZATION HERE - USE ASWR, ASNR, NOAS };
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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 */ ASNR,
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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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FOR EACH OF YOUR ACCEPTING STATES YOU MUST PROVIDE
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ONE FUNCTION PROTOTYPE. THEY ALL RETURN Token AND TAKE
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ONE ARGUMENT: A string REPRESENTING A TOKEN LEXEME.
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//FOR EACH OF YOUR ACCEPTING STATES YOU MUST PROVIDE
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//ONE FUNCTION PROTOTYPE. THEY ALL RETURN Token AND TAKE
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//ONE ARGUMENT: A string REPRESENTING A TOKEN LEXEME.
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Token aa_funcXX(char *lexeme);
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// Example: Token aa_funcXX(char *lexeme);
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Replace XX with the number of the accepting state: 02, 03 and so on.
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Token aa_func02(char* lexeme); // VID AVID/KW
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Token aa_func03(char *lexeme); // VID 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_func11(char *lexeme); // ES1 (Nothing here)
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Token aa_func12(char *lexeme); // ES2
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Token aa_func13(char *lexeme); // ES3
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//Replace XX with the number of the accepting state: 02, 03 and so on.
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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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typedef Token(*PTR_AAF)(char *lexeme);
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/* Accepting function (action) callback table (array) definition */
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@ -82,14 +123,28 @@ typedef Token (*PTR_AAF)(char *lexeme);
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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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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 */ aa_func11,
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/* State 12 */ aa_func12,
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/* State 13 */ aa_func13
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HERE YOU MUST PROVIDE AN INITIALIZATION FOR AN ARRAY OF POINTERS
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TO ACCEPTING FUNCTIONS. THE ARRAY HAS THE SAME SIZE AS as_table[ ].
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YOU MUST INITIALIZE THE ARRAY ELEMENTS WITH THE CORRESPONDING
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ACCEPTING FUNCTIONS (FOR THE STATES MARKED AS ACCEPTING IN as_table[]).
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THE REST OF THE ELEMENTS MUST BE SET TO NULL.
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//HERE YOU MUST PROVIDE AN INITIALIZATION FOR AN ARRAY OF POINTERS
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//TO ACCEPTING FUNCTIONS. THE ARRAY HAS THE SAME SIZE AS as_table[ ].
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//YOU MUST INITIALIZE THE ARRAY ELEMENTS WITH THE CORRESPONDING
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//ACCEPTING FUNCTIONS (FOR THE STATES MARKED AS ACCEPTING IN as_table[]).
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//THE REST OF THE ELEMENTS MUST BE SET TO NULL.
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};
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@ -97,7 +152,7 @@ THE REST OF THE ELEMENTS MUST BE SET TO NULL.
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#define KWT_SIZE 8
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char * kw_table []= {
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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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@ -106,7 +161,6 @@ char * kw_table []= {
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"REPEAT",
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"THEN",
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"USING"
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};
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};
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#endif
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