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Ddoc
$(SPEC_S Embedding D in HTML,
The D compiler is designed to be able to extract and compile D code
embedded within HTML files. This capability means that D code can
be written to be displayed within a browser utilizing the full formatting
and display capability of HTML.
<p>
For example, it is possible to make all uses of a class name actually be
hyperlinks to where the class is defined. There's nothing new to learn for
the person browsing the code, he just uses the normal features of an
HTML browser. Strings can be displayed in <font color=green>green</font>,
comments in <font color=red>red</font>, and
keywords in $(B boldface), for one possibility. It is even possible
to embed pictures in the code, as normal HTML image tags.
<p>
Embedding D in HTML makes it possible to put the documentation for code and
the code itself all together in one file. It is no longer necessary to
relegate documentation in comments, to be extracted later by a tech writer.
The code and the documentation for it can be maintained simultaneously,
with no duplication of effort.
<p>
How it works is straightforward. If the source file to the compiler ends
in .htm or .html, the code is assumed to be embedded in HTML. The source
is then preprocessed by stripping all text outside of &lt;code&gt; and
&lt;/code&gt; tags. Then, all other HTML tags are stripped, and embedded
character encodings are converted to ASCII.
The processing does not attempt to diagnose errors in the HTML itself.
All newlines in the original
HTML remain in their corresponding positions in the preprocessed text,
so the debug line numbers remain consistent. The resulting text is then
fed to the D compiler.
<p>
Here's an example of the D program "hello world" embedded in
this very HTML file. This file can be compiled and run.
<pre>
<code>
import std.stdio;
int <font size=+1>$(B main)</font>()
{
&nbsp;$(RED writefln)(<u>&quot;hello world&quot;</u>);
&nbsp;return 0;
}
</code>
</pre>
)
Macros:
TITLE=Embedding D in HTML
WIKI=HTML
CATEGORY_SPEC=$0
META_KEYWORDS=D Programming Language, html
META_DESCRIPTION=Extracting D code from HTML files.
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