105 lines
4.7 KiB
HTML
105 lines
4.7 KiB
HTML
<html>
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<head>
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<object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e">
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<param name="Keyword" value="unit">
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<param name="Keyword" value="interface">
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<param name="Keyword" value="implementation">
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<param name="Keyword" value="initialization">
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<param name="Keyword" value="finalization">
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<param name="Keyword" value="Ðàçäåë èíòåðôåéñà">
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<param name="Keyword" value="Ðàçäåë ðåàëèçàöèè">
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</object>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
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<title></title>
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<link rel="StyleSheet" href="../../default.css">
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</head>
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<body>
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<H1>Ñòðóêòóðà ìîäóëÿ</H1>
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<p>Ìîäóëè ïðåäíàçíà÷åíû äëÿ ðàçáèåíèÿ òåêñòà ïðîãðàììû íà
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íåñêîëüêî ôàéëîâ. Â ìîäóëÿõ îïèñûâàþòñÿ ïåðåìåííûå, êîíñòàíòû, òèïû,
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êëàññû, ïðîöåäóðû è ôóíêöèè. Äëÿ òîãî ÷òîáû ýòè îáúåêòû ìîæíî áûëî èñïîëüçîâàòü
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â âûçûâàþùåì ìîäóëå (êîòîðûì ìîæåò áûòü è îñíîâíàÿ ïðîãðàììà), ñëåäóåò óêàçàòü
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èìÿ ôàéëà ìîäóëÿ (áåç ðàñøèðåíèÿ .pas) â ðàçäåëå <b><code>uses</code></b>
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âûçûâàþùåãî ìîäóëÿ. Ôàéë ìîäóëÿ (.pas) èëè îòêîìïèëèðîâàííûé
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ôàéë ìîäóëÿ (.pcu) äîëæåí íàõîäèòüñÿ ëèáî â òîì æå
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êàòàëîãå, ÷òî è îñíîâíàÿ ïðîãðàììà, ëèáî â ïîäêàòàëîãå <b>Lib</b>
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ñèñòåìíîãî êàòàëîãà ïðîãðàììû <b>PascalABC.NET</b>.</p>
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<p>Ìîäóëü èìååò ñëåäóþùóþ ñòðóêòóðó:</p>
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<blockquote>
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<p><code><b>unit</b> <code class="codeit">èìÿ ìîäóëÿ</code>;</code></p>
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<p><code><b>interface</b></code></p>
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<p><code>
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<code class="codeit">ðàçäåë èíòåðôåéñà </code></code></p>
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<p><code><b>implementation</b></code></p>
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<p><code><code class="codeit">ðàçäåë ðåàëèçàöèè
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</code></code> </p>
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<p><code><b>initialization</b></code></p>
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<p><code><code class="codeit">ðàçäåë èíèöèàëèçàöèè</code></code></p>
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<p><code><b>finalization</b></code></p>
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<p><code><code class="codeit">ðàçäåë ôèíàëèçàöèè</code></code></p>
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<p><code><b>end</b>.</code> </p>
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</blockquote>
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<p>Èìååòñÿ òàêæå <a href="simplemodule.html">óïðîùåííûé
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ñèíòàêñèñ ìîäóëåé</a> áåç ðàçäåëîâ èíòåðôåéñà è ðåàëèçàöèè.</p>
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<p>Ïåðâàÿ ñòðîêà îáÿçàòåëüíà è íàçûâàåòñÿ <b><font color="#FF0000"> <i>çàãîëîâêîì ìîäóëÿ</i></font></b>.
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Èìÿ ìîäóëÿ äîëæíî ñîâïàäàòü ñ èìåíåì ôàéëà.</p>
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<p>Ðàçäåë èíòåðôåéñà è ðàçäåë ðåàëèçàöèè ìîäóëÿ ìîãóò íà÷èíàòüñÿ
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ñ <a href="uses.html">ðàçäåëà </a> <code><b><a href="uses.html">uses</a></b></code> ïîäêëþ÷åíèÿ âíåøíèõ
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ìîäóëåé è ïðîñòðàíñòâ èìåí .NET. Èìåíà â äâóõ ðàçäåëàõ
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<code><b>uses</b></code> íå äîëæíû ïåðåñåêàòüñÿ.</p>
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<p><i>Ðàçäåë </i><code>
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<code class="codeit">èíòåðôåéñà</code></code> âêëþ÷àåò îáúÿâëåíèå âñåõ
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èìåí, êîòîðûå ýêñïîðòèðóþòñÿ äàííûì ìîäóëåì â äðóãèå ìîäóëè (ïðè ïîäêëþ÷åíèè åãî
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â ðàçäåëå <b><code>uses</code></b>). Ýòî ìîãóò áûòü
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êîíñòàíòû, ïåðåìåííûå, ïðîöåäóðû, ôóíêöèè, êëàññû, èíòåðôåéñû. Ðåàëèçàöèÿ
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ìåòîäîâ êëàññîâ ìîæåò áûòü äàíà ïðÿìî â ðàçäåëå èíòåðôåéñà, íî ýòî íå
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ðåêîìåíäóåòñÿ.</p>
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<p><i>Ðàçäåë ðåàëèçàöèè</i> ñîäåðæèò ðåàëèçàöèþ âñåõ ïðîöåäóð, ôóíêöèé
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è ìåòîäîâ, îáúÿâëåííûõ â ðàçäåëå èíòåðôåéñà. Êðîìå ýòîãî, â ðàçäåëå ðåàëèçàöèè
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ìîãóò áûòü îïèñàíèÿ âíóòðåííèõ èìåí, êîòîðûå íå âèäíû âíå ìîäóëÿ è èñïîëüçóþòñÿ
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ëèøü êàê âñïîìîãàòåëüíûå. </p>
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<p><i>Ðàçäåë èíèöèàëèçàöèè</i> è <i>ð</i><i>àçäåë ôèíàëèçàöèè</i>
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ïðåäñòàâëÿþò ñîáîé ïîñëåäîâàòåëüíîñòü îïåðàòîðîâ, ðàçäåëÿåìûõ ñèìâîëîì <code>;</code>. Îïåðàòîðû èç ðàçäåëà
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èíèöèàëèçàöèè ìîäóëÿ âûïîëíÿþòñÿ äî íà÷àëà îñíîâíîé ïðîãðàììû,
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îïåðàòîðû èç ðàçäåëà ôèíàëèçàöèè ìîäóëÿ
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- ïîñëå îêîí÷àíèÿ îñíîâíîé ïðîãðàììû.
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Ïîðÿäîê âûïîëíåíèÿ ðàçäåëîâ èíèöèàëèçàöèè è ðàçäåëîâ ôèíàëèçàöèè ïîäêëþ÷åííûõ
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ìîäóëåé íåïðåäñêàçóåì. Êàê ðàçäåë èíèöèàëèçàöèè, òàê è ðàçäåë ôèíàëèçàöèè ìîãóò
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îòñóòñòâîâàòü. </p>
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<p>Âìåñòî ðàçäåëîâ èíèöèàëèçàöèè è ôèíàëèçàöèè ìîæåò
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ïðèñóòñòâîâàòü òîëüêî ðàçäåë èíèöèàëèçàöèè â âèäå</p>
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<blockquote>
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<p><code><b>begin</b></code><br>
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<i> ïîñëåäîâàòåëüíîñòü îïåðàòîðîâ</i><br>
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<b><code>en</code></b><code><b>d</b>.</code></p>
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</blockquote>
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<p>Íàïðèìåð:</p>
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<blockquote>
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<p><code><b>unit</b> Lib;</code></p>
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<p><b><code>interface</code></b></p>
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<p><code><b>uses</b> GraphABC;</code></p>
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<p><code><b>const</b> Dim = 5;<br>
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<b>var</b> Colors: <b>array</b> [1..Dim] <b>of</b> integer;</code></p>
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<p><code><b>function</b> RandomColor: integer;<br>
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<b>procedure</b> FillByRandomColor;</code></p>
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<p><b><code>implementation</code></b></p>
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<p><code><b>function</b> RandomColor: integer;<br>
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<b>begin</b><br>
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Result := RGB(Random(255),Random(255),Random(255));<br>
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<b>end</b>;<br>
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<b>procedure</b> FillByRandomColor;<br>
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<b>begin</b><br>
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<b>for</b> i: integer := 1 <b>to</b> Dim <b>do</b><br>
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Colors[i] := RandomColor; <br>
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<b>end</b>;</code></p>
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<p><code><b>initialization</b><br>
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FillByRandomColor;<br>
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<b>end</b>.</code></p>
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</blockquote>
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<p><a href="cyclemodules.html">Öèêëè÷åñêèå ññûëêè ìåæäó ìîäóëÿìè</a> âîçìîæíû ïðè
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îïðåäåëåííûõ îãðàíè÷åíèÿõ.</p>
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</body>
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</html> |