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nadia-polikarpova · May 15, 2024 · 4a92860 · 4a92860
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diff --git a/docs/lectures/06-parsing.html b/docs/lectures/06-parsing.html
@@ -525,27 +525,24 @@ <h2 id="running-the-lexer">Running the Lexer</h2>
 <p>which repeatedly calls <code class="sourceCode haskell">alexScan</code> until it consumes the whole input string or fails</p>
 <p><br></p>
 <p>We can test the function like so:</p>
-<div class="sourceCode" id="cb13"><pre class="sourceCode haskell"><code class="sourceCode haskell"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a>λ<span class="op">&gt;</span> parseTokens <span class="st">&quot;23 + 4 / off -&quot;</span></span>
+<div class="sourceCode" id="cb13"><pre class="sourceCode haskell"><code class="sourceCode haskell"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a>λ<span class="op">&gt;</span> parseTokens <span class="st">&quot;23 + 4&quot;</span></span>
 <span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a><span class="dt">Right</span> [ <span class="dt">NUM</span> (<span class="dt">AlexPosn</span> <span class="dv">0</span> <span class="dv">1</span> <span class="dv">1</span>) <span class="dv">23</span></span>
 <span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a>      , <span class="dt">PLUS</span> (<span class="dt">AlexPosn</span> <span class="dv">3</span> <span class="dv">1</span> <span class="dv">4</span>)</span>
 <span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a>      , <span class="dt">NUM</span> (<span class="dt">AlexPosn</span> <span class="dv">5</span> <span class="dv">1</span> <span class="dv">6</span>) <span class="dv">4</span></span>
-<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a>      , <span class="dt">DIV</span> (<span class="dt">AlexPosn</span> <span class="dv">7</span> <span class="dv">1</span> <span class="dv">8</span>)</span>
-<span id="cb13-6"><a href="#cb13-6" aria-hidden="true" tabindex="-1"></a>      , <span class="dt">ID</span> (<span class="dt">AlexPosn</span> <span class="dv">9</span> <span class="dv">1</span> <span class="dv">10</span>) <span class="st">&quot;off&quot;</span></span>
-<span id="cb13-7"><a href="#cb13-7" aria-hidden="true" tabindex="-1"></a>      , <span class="dt">MINUS</span> (<span class="dt">AlexPosn</span> <span class="dv">13</span> <span class="dv">1</span> <span class="dv">14</span>) </span>
-<span id="cb13-8"><a href="#cb13-8" aria-hidden="true" tabindex="-1"></a>      ]      </span></code></pre></div>
+<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a>      ]      </span></code></pre></div>
 <div class="sourceCode" id="cb14"><pre class="sourceCode haskell"><code class="sourceCode haskell"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a>λ<span class="op">&gt;</span> parseTokens <span class="st">&quot;%&quot;</span></span>
 <span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a><span class="dt">Left</span> <span class="st">&quot;lexical error at 1 line, 1 column&quot;</span></span></code></pre></div>
 <p><br>
 <br>
 <br>
 <br></p>
 <h2 id="quiz">QUIZ</h2>
-<p>What is the result of <code class="sourceCode haskell">parseTokens <span class="st">&quot;92zoo&quot;</span></code>
+<p>What is the result of <code class="sourceCode haskell">parseTokens <span class="st">&quot;x+&quot;</span></code>
 (positions omitted for readability)?</p>
 <p><strong>(A)</strong> Lexical error</p>
-<p><strong>(B)</strong> <code class="sourceCode haskell">[<span class="dt">ID</span> <span class="st">&quot;92zoo&quot;</span>]</code></p>
-<p><strong>(C)</strong> <code class="sourceCode haskell">[<span class="dt">NUM</span> <span class="st">&quot;92&quot;</span>]</code></p>
-<p><strong>(D)</strong> <code class="sourceCode haskell">[<span class="dt">NUM</span> <span class="st">&quot;92&quot;</span>, <span class="dt">ID</span> <span class="st">&quot;zoo&quot;</span>]</code></p>
+<p><strong>(B)</strong> Some other error</p>
+<p><strong>(C)</strong> <code class="sourceCode haskell">[<span class="dt">ID</span> <span class="st">&quot;x+&quot;</span>]</code></p>
+<p><strong>(D)</strong> <code class="sourceCode haskell">[<span class="dt">ID</span> <span class="st">&quot;x&quot;</span>, <span class="dt">PLUS</span>]</code></p>
 <p><br></p>
 <p><br>
 <br>

diff --git a/lectures/06-parsing.md b/lectures/06-parsing.md
@@ -389,13 +389,10 @@ which repeatedly calls `alexScan` until it consumes the whole input string or fa
 We can test the function like so:
 
 ```haskell
-λ> parseTokens "23 + 4 / off -"
+λ> parseTokens "23 + 4"
 Right [ NUM (AlexPosn 0 1 1) 23
       , PLUS (AlexPosn 3 1 4)
       , NUM (AlexPosn 5 1 6) 4
-      , DIV (AlexPosn 7 1 8)
-      , ID (AlexPosn 9 1 10) "off"
-      , MINUS (AlexPosn 13 1 14) 
       ]      
 ```
 
@@ -411,16 +408,16 @@ Left "lexical error at 1 line, 1 column"
 
 ## QUIZ
 
-What is the result of `parseTokens "92zoo"`
+What is the result of `parseTokens "x+"`
 (positions omitted for readability)?
 
 **(A)** Lexical error
 
-**(B)** `[ID "92zoo"]`
+**(B)** Some other error
 
-**(C)** `[NUM "92"]`
+**(C)** `[ID "x+"]`
 
-**(D)** `[NUM "92", ID "zoo"]`
+**(D)** `[ID "x", PLUS]`
 
 <br>