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cfg2ll.html
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cfg2ll.html
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<!DOCTYPE html>
<html>
<head>
<title>CFG to LL(k)</title>
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<link rel="stylesheet" href="./css/cfg2ll.css">
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<body>
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<!-- Body Begin -->
<div class="row">
<span class="col-md-2">
<div class="well">
<h4>Introduction</h4>
<hr>
<p>
Try converting the given context free grammar to LL(k) class by performing left factoring then eliminating left recursion.
</p>
</div>
</span>
<span class="col-md-5">
<div class="well">
<h4>Supported grammars</h4>
<ul>
<li>A -> A c | A a d | b d | ϵ <br>(All tokens must be separated by space characters)</li>
<li>A -> A c <br> | A a d <br> | b d <br> | ϵ </li>
<li>S -> A a | b<br>A -> A c | S d | ϵ</li>
<li>(Copy ϵ to input if needed)</li>
</ul>
</div>
</span>
<span class="col-md-5">
<div class="well">
<h4>Examples</h4>
<ul>
<li>S -> S S + | S S * | a</li>
<li>S -> 0 S 1 | 0 1</li>
<li>S -> + S S | * S S | a</li>
<li>S -> S ( S ) S | ϵ</li>
<li>S -> S + S | S S | ( S ) | S * | a</li>
<li>S -> ( L ) | a L -> L , S | S</li>
<li>S -> a S b S | b S a S | ϵ</li>
<li>
bexpr -> bexpr or bterm | bterm <br>
bterm -> bterm and bfactor | bfactor <br>
bfactor -> not bfactor | ( bexpr ) | true | false
</li>
</ul>
</div>
</span>
</div>
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<div class="form-group">
<label for="input_grammar" class="col-md-1 control-label">Input: </label>
<div class="col-md-11">
<textarea type="text" class="form-control" id="input_grammar" rows="10" placeholder="A -> A c | A a d | b d | ϵ"></textarea>
</div>
</div>
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<button type="button" class="close" data-dismiss="alert">×</button>
<strong>Invalid Grammar</strong>
<p id="p_error"></p>
</div>
<div class="row">
<div class="form-group">
<label for="output_grammar" class="col-md-1 control-label">Output: </label>
<div class="col-md-11">
<textarea type="text" class="form-control" id="output_grammar" rows="10" readonly></textarea>
</div>
</div>
</div>
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