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>