firstFollow

Simples javascript script that computes FIRST and FOLLOW sets for context-free grammars.

Grammar format

• Check https://brunorb.github.io/firstFollow#rules
• test/grammar.js contains some examples
• grammars copied from compilers books like the Dragon Book should work just fine

Installing / Running

Try the live demo: https://brunorb.github.io/firstFollow/

or

npm install firstfollow

then for node:

var myGrammar = 'A -> b w';
var firstFollow = require('firstfollow');
var data = firstFollow(myGrammar);
var computedFirstSet = data.firstSet;
var computedFollowSet = data.followSet;

for the browser:

<script src="/src/main.js"><script>`
<script>
var myGrammar = 'A -> b w';
var data = firstFollow(myGrammar);
var computedFirstSet = data.firstSet;
var computedFollowSet = data.followSet;
</script>

License

The MIT License