Failing to browserify parsers generated by Jison

[codedot]

$ ls
calc.jison
$ cat calc.jison 
/* description: Parses end executes mathematical expressions. */

/* lexical grammar */
%lex

%%
\s+                   /* skip whitespace */
[0-9]+("."[0-9]+)?\b  return 'NUMBER';
"*"                   return '*';
"/"                   return '/';
"-"                   return '-';
"+"                   return '+';
"^"                   return '^';
"("                   return '(';
")"                   return ')';
"PI"                  return 'PI';
"E"                   return 'E';
<<EOF>>               return 'EOF';

/lex

/* operator associations and precedence */

%left '+' '-'
%left '*' '/'
%left '^'
%left UMINUS

%start expressions

%% /* language grammar */

expressions
    : e EOF
        {print($1); return $1;}
    ;

e
    : e '+' e
        {$$ = $1+$3;}
    | e '-' e
        {$$ = $1-$3;}
    | e '*' e
        {$$ = $1*$3;}
    | e '/' e
        {$$ = $1/$3;}
    | e '^' e
        {$$ = Math.pow($1, $3);}
    | '-' e %prec UMINUS
        {$$ = -$2;}
    | '(' e ')'
        {$$ = $2;}
    | NUMBER
        {$$ = Number(yytext);}
    | E
        {$$ = Math.E;}
    | PI
        {$$ = Math.PI;}
    ;
$ npm install browserify brfs jison
[...]
$ node_modules/.bin/jison calc.jison 
$ node_modules/.bin/browserify calc.js -o bundle.js
$ node_modules/.bin/browserify calc.js -o bundle.js -t brfs
TypeError: Object #<Object> has no method 'apply' while parsing file: /tmp/test/calc.js
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/static-eval/index.js:89:27)
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/static-eval/index.js:92:23)
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/static-eval/index.js:77:26)
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/static-eval/index.js:85:25)
    at module.exports (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/static-eval/index.js:114:7)
    at traverse (/tmp/test/node_modules/brfs/node_modules/static-module/index.js:256:23)
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/index.js:208:13)
    at walk (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/falafel/index.js:49:9)
    at /tmp/test/node_modules/brfs/node_modules/static-module/node_modules/falafel/index.js:46:17
    at forEach (/tmp/test/node_modules/brfs/node_modules/static-module/node_modules/falafel/node_modules/foreach/index.js:12:16)
$ 

[nahidakbar]

+1 for this please

It works if I require jison and use that. However the generated parsers give the above error.

[mattdesl]

Can you explain in more detail what this problem is and what you are trying to solve? I'm not sure what jison is, or where the problem in brfs lies.

Cheers 🍻

[goto-bus-stop]

Can't reproduce with the latest browserify and brfs versions; please open a new issue if this is still relevant.