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タグを打ち忘れていたついでに、html版ドキュメントを追加しました。
[ring-lang-081/ring.git] / docs / build / html / evaldebug.html
diff --git a/docs/build/html/evaldebug.html b/docs/build/html/evaldebug.html
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@@ -0,0 +1,285 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
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+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>Eval() とデバッグ &mdash; プログラミング言語 Ring 1.12 取扱説明書</title>
+    
+    <link rel="stylesheet" href="_static/bootstrap-astropy.css" type="text/css" />
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+    
+    <script type="text/javascript">
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+        FILE_SUFFIX: '.html',
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+      };
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+    <link rel="next" title="デモプログラム" href="demo.html" />
+    <link rel="prev" title="システム関数" href="systemfunc.html" />
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+  </head>
+  <body role="document">
+<div class="topbar">
+  <a class="brand" title="Documentation Home" href="index.html"><span id="logotext1">&#x1f369;Ring</span><span id="logotext2"> 1.12</span><span id="logotext3">:docs</span></a>
+  <ul>
+    
+    <li><a href="http://ring-lang.sourceforge.net/news.html">News</a></li>
+    <li><a href="http://ring-lang.sourceforge.net/download.html">Download</a></li>
+    <li><a href="https://groups.google.com/forum/#!forum/ring-lang">Get Help</a></li>
+    <li><a href="https://github.com/ring-lang/ring">Contribute</a></li>
+    <li><a href="http://ring-lang.sourceforge.net/resources.html">Resources</a></li>
+    <li><a href="http://ring-lang.sourceforge.net/team.html">Team</a></li>
+    
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+    <li><a title="総合索引" href="genindex.html">Index</a></li>
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+<form action="search.html" method="get">
+  <input type="text" name="q" placeholder="Search" />
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+</form>
+      
+    </li>
+  </ul>
+</div>
+
+<div class="related">
+    <h3>ナビゲーション</h3>
+    <ul>
+      <li class="right">
+       <a href="demo.html" title="デモプログラム">
+         next &raquo;
+       </a>
+      </li>
+      <li class="right">
+       <a href="systemfunc.html" title="システム関数">
+         &laquo; previous
+       </a>
+        |
+      </li>
+      <li>
+       <a href="index.html">プログラミング言語 Ring 1.12 取扱説明書</a>
+        &raquo;
+      </li>
+      
+      <li>Eval() とデバッグ</li> 
+    </ul>
+</div>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+  <div class="section" id="eval">
+<span id="index-0"></span><h1>Eval() とデバッグ<a class="headerlink" href="#eval" title="このヘッドラインへのパーマリンク">¶</a></h1>
+<p>下記の用法を学びます。</p>
+<ul class="simple">
+<li>Try/Catch/Done によるエラー処理</li>
+<li>Eval() 関数</li>
+<li>Raise() 関数</li>
+<li>Assert() 関数</li>
+</ul>
+<div class="section" id="try-catch-done">
+<span id="index-1"></span><h2>Try/Catch/Done<a class="headerlink" href="#try-catch-done" title="このヘッドラインへのパーマリンク">¶</a></h2>
+<p>文法:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="k">Try</span>
+        <span class="n">ステートメント</span><span class="p">...</span>
+<span class="k">Catch</span>
+        <span class="n">ステートメント</span><span class="p">...</span>
+<span class="k">Done</span>
+</pre></div>
+</div>
+<p>まず Try ブロックのステートメントが実行されます。
+そしてエラーが発生すると catch ブロックのステートメントが実行されます。</p>
+<p>catch ブロックの内側では変数 cCatchError でエラーメッセージを取得できます。</p>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="k">Try</span>
+        <span class="k">see</span> <span class="mi">5</span><span class="o">/</span><span class="mi">0</span>
+<span class="k">Catch</span>
+        <span class="k">see</span> <span class="s">&quot;Catch!&quot;</span> <span class="o">+</span> <span class="n">nl</span> <span class="o">+</span> <span class="n">cCatchError</span>
+<span class="k">Done</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="k">Catch</span><span class="o">!</span>
+<span class="n">Error</span> <span class="p">(</span><span class="n">R1</span><span class="p">)</span> <span class="p">:</span> <span class="n">Cann</span><span class="sc">&#39;t divide by zero !</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="index-2">
+<span id="id1"></span><h2>Eval() 関数<a class="headerlink" href="#index-2" title="このヘッドラインへのパーマリンク">¶</a></h2>
+<p>Eval() 関数は実行時に文字列からコードを実行します。</p>
+<p>文法:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Eval</span><span class="p">(</span><span class="n">cCode</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Eval</span><span class="p">(</span><span class="s">&quot;nOutput = 5+2*5 &quot;</span> <span class="p">)</span>
+<span class="k">See</span> <span class="s">&quot;5+2*5 = &quot;</span> <span class="o">+</span> <span class="n">nOutput</span> <span class="o">+</span> <span class="n">nl</span>
+<span class="n">Eval</span><span class="p">(</span><span class="s">&quot;for x = 1 to 10 see x + nl next&quot;</span><span class="p">)</span>
+<span class="n">Eval</span><span class="p">(</span><span class="s">&quot;func test see &#39;message from test!&#39; &quot;</span><span class="p">)</span>
+<span class="n">test</span><span class="p">()</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="mi">5</span><span class="o">+</span><span class="mi">2</span><span class="o">*</span><span class="mi">5</span> <span class="o">=</span> <span class="mi">15</span>
+<span class="mi">1</span>
+<span class="mi">2</span>
+<span class="mi">3</span>
+<span class="mi">4</span>
+<span class="mi">5</span>
+<span class="mi">6</span>
+<span class="mi">7</span>
+<span class="mi">8</span>
+<span class="mi">9</span>
+<span class="mi">10</span>
+<span class="n">message</span> <span class="k">from</span> <span class="n">test</span><span class="o">!</span>
+</pre></div>
+</div>
+<p>Return 命令で値を返せます。</p>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="k">see</span> <span class="n">Eval</span><span class="p">(</span><span class="s">&quot;return 5*5&quot;</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="mi">25</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="raise">
+<span id="index-3"></span><h2>Raise() 関数<a class="headerlink" href="#raise" title="このヘッドラインへのパーマリンク">¶</a></h2>
+<p>Raise() 関数は例外を発生します。</p>
+<p>文法:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Raise</span><span class="p">(</span><span class="n">cErrorMessage</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>この関数はエラーメッセージを表示した後にプログラムを終了します。</p>
+<p>raise() 関数で生成された例外は Try/Catch/Done により回避できます。</p>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">nMode</span> <span class="o">=</span> <span class="mi">10</span>
+
+<span class="k">if</span> <span class="n">nMode</span> <span class="o">&lt;</span> <span class="mi">0</span> <span class="ow">or</span> <span class="n">nMode</span> <span class="o">&gt;</span> <span class="mi">5</span>
+        <span class="n">raise</span><span class="p">(</span><span class="s">&quot;Error : nMode not in the range 1:4&quot;</span><span class="p">)</span>
+<span class="k">ok</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Line</span> <span class="mi">4</span> <span class="n">Error</span> <span class="p">:</span> <span class="n">nMode</span> <span class="ow">not</span> <span class="k">in</span> <span class="n">the</span> <span class="n">range</span> <span class="mi">1</span><span class="p">:</span><span class="mi">4</span>
+<span class="k">In</span> <span class="n">raise</span> <span class="k">in</span> <span class="n">file</span> <span class="n">tests</span><span class="o">\</span><span class="n">raise</span><span class="p">.</span><span class="n">ring</span>
+</pre></div>
+</div>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="k">try</span>
+        <span class="n">testmode</span><span class="p">(</span><span class="mi">6</span><span class="p">)</span>
+<span class="k">catch</span>
+        <span class="k">see</span> <span class="s">&quot;avoid raise!&quot;</span>
+<span class="k">done</span>
+
+<span class="n">testmode</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span>
+
+<span class="k">func</span> <span class="n">testmode</span> <span class="n">nMode</span>
+
+        <span class="k">if</span> <span class="n">nMode</span> <span class="o">&lt;</span> <span class="mi">0</span> <span class="ow">or</span> <span class="n">nMode</span> <span class="o">&gt;</span> <span class="mi">5</span>
+                <span class="n">raise</span><span class="p">(</span><span class="s">&quot;Error : nMode not in the range 1:4&quot;</span><span class="p">)</span>
+        <span class="k">ok</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">avoid</span> <span class="n">raise</span><span class="o">!</span>
+<span class="n">Line</span> <span class="mi">12</span> <span class="n">Error</span> <span class="p">:</span> <span class="n">nMode</span> <span class="ow">not</span> <span class="k">in</span> <span class="n">the</span> <span class="n">range</span> <span class="mi">1</span><span class="p">:</span><span class="mi">4</span>
+<span class="k">In</span> <span class="n">raise</span> <span class="k">In</span> <span class="n">function</span> <span class="n">testmode</span><span class="p">()</span> <span class="k">in</span> <span class="n">file</span> <span class="n">tests</span><span class="o">\</span><span class="n">raise2</span><span class="p">.</span><span class="n">ring</span>
+<span class="n">called</span> <span class="k">from</span> <span class="n">line</span> <span class="mi">7</span>  <span class="k">in</span> <span class="n">file</span> <span class="n">tests</span><span class="o">\</span><span class="n">raise2</span><span class="p">.</span><span class="n">ring</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="assert">
+<span id="index-4"></span><h2>Assert() 関数<a class="headerlink" href="#assert" title="このヘッドラインへのパーマリンク">¶</a></h2>
+<p>Assert() 関数はコードの実行前に条件をテストします。</p>
+<p>テストに失敗した場合は、アサートの条件を有するエラーメッセージを表示後にプログラムを終了します。</p>
+<p>文法:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Assert</span><span class="p">(</span> <span class="n">条件</span> <span class="p">)</span>
+</pre></div>
+</div>
+<p>用例:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">x</span> <span class="o">=</span> <span class="mi">10</span>
+<span class="n">assert</span><span class="p">(</span> <span class="n">x</span> <span class="o">=</span> <span class="mi">10</span><span class="p">)</span>
+<span class="n">assert</span><span class="p">(</span> <span class="n">x</span> <span class="o">=</span> <span class="mi">100</span> <span class="p">)</span>
+</pre></div>
+</div>
+<p>実行結果:</p>
+<div class="highlight-ring"><div class="highlight"><pre><span class="n">Line</span> <span class="mi">3</span> <span class="n">Assertion</span> <span class="n">Failed</span><span class="o">!</span>
+<span class="k">In</span> <span class="n">assert</span> <span class="k">in</span> <span class="n">file</span> <span class="n">tests</span><span class="o">\</span><span class="n">assert</span><span class="p">.</span><span class="n">ring</span>
+</pre></div>
+</div>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper"><h3>ページの内容</h3>
+<ul>
+<li><a class="reference internal" href="#">Eval() とデバッグ</a><ul>
+<li><a class="reference internal" href="#try-catch-done">Try/Catch/Done</a></li>
+<li><a class="reference internal" href="#index-2">Eval() 関数</a></li>
+<li><a class="reference internal" href="#raise">Raise() 関数</a></li>
+<li><a class="reference internal" href="#assert">Assert() 関数</a></li>
+</ul>
+</li>
+</ul>
+
+
+  <h4>前のトピックへ</h4>
+  <p class="topless"><a href="systemfunc.html"
+                        title="前の章へ">システム関数</a></p>
+  <h4>次のトピックへ</h4>
+  <p class="topless"><a href="demo.html"
+                        title="次の章へ">デモプログラム</a></p>
+  <div role="note" aria-label="source link">
+    <h3>このページ</h3>
+    <ul class="this-page-menu">
+      <li><a href="_sources/evaldebug.txt"
+            rel="nofollow">ソースコードを表示</a></li>
+    </ul>
+   </div>
+      
+<form action="search.html" method="get">
+  <input type="text" name="q" placeholder="Search" />
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+</form>
+      
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+<footer class="footer">
+  <p class="pull-right">
+    <a href="_sources/evaldebug.txt"
+       rel="nofollow">Page Source</a> &nbsp;
+    <a href="#">Back to Top</a></p>
+  <p>
+    &copy; Copyright 2016-2020, Ring Team.<br/>
+    Created using <a href="http://www.sphinx-doc.org/en/stable/">Sphinx</a> 1.3.6. / astropy-sphinx-theme 1.1 (isVowel)
+  </p>
+</footer>
+  </body>
+</html>
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