scarlett/compiler-the-translators
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fixed precedence tests

Browse Source
This commit is contained in:
Partho Bhattacharya
2025-03-07 13:36:07 -05:00
parent 211919d70e
commit 6dcad07520
3 changed files with 52 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
src/grammar.y
View File

@ -1,6 +1,7 @@
%{
#include <stdio.h>
#include "../src/symbol_table.c"
#include <math.h>
extern int yylex(void);
void yyerror(const char *err);
extern char* yytext;
@ -21,16 +22,18 @@
char * words;
}
//need subtraction only here
%type <words> id_or_types
%type <words> types
%type expression
%type constant
%token <words> ID 101
%token <words> T_INTEGER 201
%token <words> T_ADDRESS 202
%token <words> T_BOOLEAN 203
%token <words> T_CHARACTER 204
%token <words> T_STRING 205
%token C_INTEGER 301
%token <integ> C_INTEGER 301
%token C_NULL 302
%token C_CHARACTER 303
%token C_STRING 304
@ -72,17 +75,19 @@
%token COMMENT 700
//precedence order
%precedence RESERVE RELEASE
%precedence DOT
%precedence UMINUS
%precedence NOT
%left MUL DIV REM
%left ADD SUB_OR_NEG
%left LESS_THAN
%left EQUAL_TO
%left AND
%left OR
%left ASSIGN
%left OR
%left AND
%left EQUAL_TO
%left LESS_THAN
%left ADD SUB_OR_NEG
%left MUL DIV REM
%precedence NOT
%precedence UMINUS
%precedence DOT
%precedence RESERVE RELEASE
%%
@ -125,7 +130,7 @@ idlist:
sblock:
L_BRACE {cur = CreateScope(cur,@1.first_line,@1.first_column);} statement_list {cur = getParent(cur);} R_BRACE
| L_BRACE {cur = CreateScope(cur,@1.first_line,@1.first_column);} dblock statement_list {cur = getParent(cur);} R_BRACE
| L_BRACE {cur = CreateScope(cur,@1.first_line,@1.first_column);} dblock {printf("seen sblock with dblock\n");} statement_list {cur = getParent(cur);} R_BRACE
;
dblock:
@ -155,7 +160,7 @@ statement_list:
compound_statement:
WHILE L_PAREN expression R_PAREN sblock
| IF L_PAREN expression R_PAREN THEN sblock ELSE sblock
| sblock
| sblock //{printf("seen a compound statement rule\n");}
;
simple_statement:
@ -173,21 +178,21 @@ rec_op :
DOT
expression:
constant
| SUB_OR_NEG expression %prec UMINUS
| NOT expression
| expression ADD expression
| expression SUB_OR_NEG expression
| expression MUL expression
| expression DIV expression
| expression REM expression
| expression AND expression
| expression OR expression
| expression LESS_THAN expression
| expression EQUAL_TO expression
| assignable
| L_PAREN expression R_PAREN
| memOp assignable
constant {printf("constant expression\n");}
| SUB_OR_NEG expression %prec UMINUS {printf("negative expression\n");}
| NOT expression {printf("not expression\n");}
| expression ADD expression {printf("add expression\n");}
| expression SUB_OR_NEG expression {printf("subtract expression\n");}
| expression MUL expression {printf("multiply expression\n");}
| expression DIV expression {printf("division expression\n");}
| expression REM expression {printf("remainder expression\n");}
| expression AND expression {printf("and expression\n");}
| expression OR expression {printf("or expression\n");}
| expression LESS_THAN expression {printf("less than expression\n");}
| expression EQUAL_TO expression {printf("equals check expression\n");}
| assignable {printf("assignable expression\n");}
| L_PAREN expression R_PAREN {printf("paren expression\n");}
| memOp assignable
;
ablock:
@ -201,8 +206,8 @@ argument_list:
memOp:
RESERVE
| RELEASE
RESERVE {printf("reserve expression\n");}
| RELEASE {printf("release expression\n");}
;

2
src/lexicalStructure.lex
View File

@ -72,7 +72,7 @@ SCHAR \\n|\\t|\\\"|[^\"\n\\]
"," {if(DEBUG) {printf( "COMMA: %s (%d)\n", yytext, COMMA);} else {if(tok_flag != NULL){print_tok(COMMA);}incr(line_number,column_number,COMMA);return COMMA;}}
"->" {if(DEBUG) {printf( "ARROW: %s (%d)\n", yytext, ARROW);} else {if(tok_flag != NULL){print_tok(ARROW);}incr(line_number,column_number,ARROW);return ARROW;}}
{DIGIT}+ {if(DEBUG) {printf( "C_INTEGER: %s (%d)\n", yytext, C_INTEGER);} else {if(tok_flag != NULL){print_tok(C_INTEGER);}incr(line_number,column_number,C_INTEGER);return C_INTEGER;}}
{DIGIT}+ {if(DEBUG) {printf( "C_INTEGER: %s (%d)\n", yytext, C_INTEGER);} else {if(tok_flag != NULL){print_tok(C_INTEGER);}incr(line_number,column_number,C_INTEGER);yylval.integ = atoi(yytext);return C_INTEGER;}}
'{CHAR}' {if(DEBUG) {printf( "C_CHARACTER: %s (%d)\n", yytext, C_CHARACTER);} else {if(tok_flag != NULL){print_tok(C_CHARACTER);}incr(line_number,column_number,C_CHARACTER);return C_CHARACTER;}}
\"{SCHAR}*\" {if(DEBUG) {printf( "C_STRING: %s (%d)\n", yytext, C_STRING);} else {if(tok_flag != NULL){print_tok(C_STRING);}incr(line_number,column_number,C_STRING);return C_STRING;}}
{COMMENT} {if(DEBUG) {printf( "COMMENT: %s (%d)\n", yytext, COMMENT);} else {if(tok_flag != NULL){print_tok(COMMENT);}incr(line_number,column_number,COMMENT);/*return COMMENT;*/}}