assignment

ilya
serr 2025-05-13 14:09:44 +03:00
parent cb3527a247
commit 32ac19d671
3 changed files with 53 additions and 24 deletions

View File

@ -2,24 +2,38 @@
#include "test.tab.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int CURRENT_LINE_NUMBER = 0;
int CURRENT_LINE_NUMBER = 1;
void yyerror(const char *s) {
fprintf(stderr, "\033[91mError at line %i\033[0m", CURRENT_LINE_NUMBER);
fprintf(stderr, "\033[91mError at line %i: %s\033[0m\n", CURRENT_LINE_NUMBER, s);
exit(1);
}
%}
%%
[a-zA-Z_][a-zA-Z0-9_]* {
yylval.str = strdup(yytext);
return IDENTIFIER;
}
[0-9]+ {
yylval.str = strdup(yytext);
return NUMBER;
}
":=" { return ASSIGN; }
"{" { return LBRACE; }
"}" { return RBRACE; }
[ \t]+ ; // Пропускаем пробелы и табы
\n { CURRENT_LINE_NUMBER++; }
[^{}]+ {
yylval.str = strdup(yytext);
return TEXT;
. {
fprintf(stderr, "\033[91mUnexpected character at line %i: %c\033[0m\n",
CURRENT_LINE_NUMBER, yytext[0]);
exit(1);
}
%%
int yywrap() {

View File

@ -9,35 +9,55 @@ extern char *yytext;
extern void yyerror(const char *s);
extern int yylex();
extern FILE *yyin;
void free_node(char *str) {
if (str) free(str);
}
%}
%union {
char *str;
}
%token <str> TEXT
%token LBRACE RBRACE
%token <str> IDENTIFIER NUMBER TEXT
%token ASSIGN LBRACE RBRACE
%type <str> expr
%%
program:
| program expr
| program block
;
block:
LBRACE content RBRACE
;
content:
| content TEXT {
printf("TOKEN ('%s')\n", $2);
free($2); }
printf("TEXT: '%s'\n", $2);
free_node($2); }
| content block
| content expr
;
expr:
IDENTIFIER ASSIGN NUMBER {
printf("Assignment: %s := %s\n", $1, $3);
free_node($1);
free_node($3);
}
;
%%
int main(int argc, char **argv) {
if (argc > 1) {
FILE *f = fopen(argv[1], "r");
if (!f) {
perror("\033[91mFail open file\033[0m");
perror("\033[91mFailed to open file\033[0m");
return 1;
}
yyin = f;

View File

@ -1,13 +1,8 @@
a := 1
{
{ 1 231233
{1}{}
block1 {
block2 { block3 }
block4 asjdb asd bajds ba
} 126316
block5
}
a := 1
{
123
b := 2
}
}