demo_namespace.htm

来自「Delphi脚本控件」· HTM 代码 · 共 120 行

HTM
120 行
字号 
<html>
<head>
<link rel=stylesheet type="text/css" href="styles.css">
</head>

<body>

<h3>
paxScript Demo. Namespaces, Modularity and Cross-language Programming.
</h3>
<hr>

<h4>
Example 1
</h4>


Let's create the first module in paxBasic:

<blockquote>
<pre>
<font color="blue"><b>Namespace</b></font> MyTask

  <font color="blue"><b>Class</b></font> B 
    <font color="blue"><b>Private</b></font> x As <font color="blue"><b>String</b></font> = "abc", y As <font color="blue"><b>Integer</b></font> = 700

    <font color="blue"><b>Sub</b></font> <font color="blue"><b>New</b></font>() 
    <font color="blue"><b>End</b></font> <font color="blue"><b>Sub</b></font>

    <font color="blue"><b>Shared</b></font> <font color="blue"><b>Function</b></font> Create() <i>// To create instances in paxPascal</i>
      <font color="blue"><b>Return</b></font> (<font color="blue"><b>New</b></font> B())
    <font color="blue"><b>End</b></font> <font color="blue"><b>Function</b></font>

  <font color="blue"><b>End</b></font> <font color="blue"><b>Class</b></font>

<font color="blue"><b>End</b></font> <font color="blue"><b>Namespace</b></font>
</pre>
</blockquote>


After that we create the second module in paxC:

<blockquote>
<pre>
<font color="blue"><b>namespace</b></font> MyTask {

  <font color="blue"><b>class</b></font> A {
    <font color="blue"><b>var</b></font>
       x = 100, y = [500, 800];

    <font color="blue"><b>void</b></font> A(){} 

    <font color="blue"><b>static</b></font> <font color="blue"><b>void</b></font> Create(){ // To create instances in paxPascal
      <font color="blue"><b>return</b></font> (<font color="blue"><b>new</b></font> A());
    }
  }
}
</pre>
</blockquote>

Now we can use both modules in paxPascal:

<blockquote>
<pre>
<font color="blue"><b>program</b></font> Demo;
<font color="blue"><b>uses</b></font> MyTask;
<font color="blue"><b>var</b></font>
  x: A; y: B;
<font color="blue"><b>begin</b></font>
  x := A.Create();
  y := B.Create();
  <font color="blue"><b>print</b></font> x;
  <font color="blue"><b>print</b></font> y;
<font color="blue"><b>end</b></font>;
</pre>
</blockquote>

<h4>
Example 2
</h4>

A standard paxPascal routine writeln is located in paxPascalNamespace. You can use 
it in all pax-languages.

<p>
paxPascal:
</p>

<pre>
writeln('Hello from paxPascal!'); 
</pre>

<p>
paxC:
</p>

<pre>
<font color="blue"><b>using</b></font> paxPascalNamespace;
writeln('Hello from paxPascal!'); 
</pre>

<p>
paxBasic:
</p>

<pre>
<font color="blue"><b>imports</b></font> paxPascalNamespace
writeln "Hello from paxPascal!"
</pre>


<p>
<HR>
<font size = 1 color ="gray">
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VIRT Laboratory. All rights reserved.
</font>
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