Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

support mutili new line in statement #5

Merged
merged 2 commits into from
Jul 21, 2021
Merged

support mutili new line in statement #5

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
495b255
support mutili new line in statement
shenao78 Jul 21, 2021
54c7a82
remove lf token
shenao78 Jul 21, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
28 changes: 21 additions & 7 deletions src/grammar.y
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -43,8 +43,8 @@ int yyerror(const char *s);
%%

stmt_list:
stmt {$$ = allocStatementList($1); }
| stmt_list '\n' stmt {$$ = chainStatementList($1, $3); }
stmt {$$ = allocStatementList($1); }
| stmt_list new_line stmt {$$ = chainStatementList($1, $3); }
;

stmt:
Expand All @@ -71,8 +71,12 @@ elseif:
;

block:
'{' stmt_list '}' { $$ = allocBlock($2); }
| '{' '}' { $$ = allocBlock(NULL); }
'{' stmt_list '}' { $$ = allocBlock($2); }
| '{' new_line stmt_list '}' { $$ = allocBlock($3); }
| '{' stmt_list new_line '}' { $$ = allocBlock($2); }
| '{' new_line stmt_list new_line '}' { $$ = allocBlock($3); }
| '{' new_line '}' { $$ = allocBlock(NULL); }
| '{' '}' { $$ = allocBlock(NULL); }
;

expr:
Expand Down Expand Up @@ -101,6 +105,10 @@ bool_expr:
| '!' expr %prec NOT { $$ = allocUnaryExpression(NOT_EXPRESSION, $2); }
;

new_line:
'\n'
| new_line '\n'

%%

int yyerror(char const *str) {
Expand All @@ -109,9 +117,15 @@ int yyerror(char const *str) {
return 0;
}

int main(void) {
if (yyparse()) {
exit(1);
int main(int argc, char *argv[]) {
extern FILE *yyin;
yyin = fopen(argv[1], "r");
if(yyin==NULL)
{
printf("fail to open file:%s\n", argv[1]);
} else
{
yyparse();
}
return 0;
}