<sect1 id="appendix">
  <title>Appendix</title>
  
  <sect2 id="codestyle">
    <title>Code Style</title>

    <para>
      I know any discussion of coding styles leads to strong opinions,
      so I'll state simply I follow the <ulink type="http"
      url="http://www.gnu.org/prep/standards/standards.html">GNU
      Coding Standards</ulink>. Where there is some flexibility as to
      the location of braces, I prefer mine on the end of a line when
      using an <emphasis>if</emphasis>, <emphasis>while</emphasis>, or <emphasis>do</emphasis>
      statement. I find this more compact style easier to read and
      parse by eye. I'm also a big fan of always using
      braces around <emphasis>if</emphasis> statements, even if they're one
      liners.
    </para>

    <para>
      Here's my tweaked style settings for <emphasis>Emacs</emphasis>, the one
      true editor to rule them all.

      <programlisting>
      (defconst my-style
          '((c-tab-always-indent   . t)
           (c-auto-newline	   . t)
           (c-hanging-braces-alist . (
				   (brace-list-intro)
				   (namespace-open)
				   (inline-open)
				   (block-open)
				   (brace-list-open)
				   (brace-list-close)
				   (brace-entry-open)
				   (brace-else-brace)
				   (brace-elseif-brace)
				   (class-open after)
				   (class-close)
				   (defun-open after)
				   (defun-close)
				   (extern-lang-open)
				   (inexpr-class-open)
				   (statement-open)
				   (substatement-open)
				   (inexpr-class-close)))
            (c-hanging-colons-alist . ((member-init-intro before)
                                   (inher-intro)
                                   (case-label after)
                                   (label after)
                                   (access-label after)))
            (c-offsets-alist	. (
				   (innamespace . 0)
                                   (case-label  . 2)
				   ))
            (c-cleanup-list	. (
				   (scope-operator)
				   (empty-defun-braces)
				   (brace-else-brace)
				   (brace-elseif-brace)
				   (defun-close-semi)
				   (list-close-comma)
				   )
				)
    ;; no automatic newlines after ';' if following line non-blank or inside
    ;; one-line inline methods
    (add-to-list 'c-hanging-semi&amp;comma-criteria
		 'c-semi&amp;comma-no-newlines-before-nonblanks)
    (add-to-list 'c-hanging-semi&amp;comma-criteria
		 'c-semi&amp;comma-no-newlines-for-oneline-inliners)
;    (knr-argdecl-intro . -)
    (c-echo-syntactic-information-p . t)
    )
  "My GNU Programming Style")
    </programlisting>

    </para>
    
    <para>
      Another coding consideration: comments are good!  Over
      commenting isn't good.  Here is an over commented example:

      <programlisting>
	counter++;		// increment counter
      </programlisting>
      
      Gnash also uses <ulink type="http"
      url="http://www.doxygen.org">Doxygen</ulink> style
      comments. These are processed by Doxygen when building a cross
      reference of all the classes, and is a good way to help push
      internals documentation from the depths of the code into
      documentation where it can be seen by others.
    </para>

    <para>
      <emphasis>Doxygen</emphasis> style comments for <emphasis>C++</emphasis> code involves
      simply using three slashes <emphasis>///</emphasis> instead of the
      standard two slashes <emphasis>//</emphasis> used for C++
      comments. Here's a short comment block for the
      <emphasis>XML::cloneNode()</emphasis> method:

      <programlisting>
	/// \brief copy a node
	///
	/// Method; constructs and returns a new XML node of the same type,
	/// name, value, and attributes as the specified XML object. If deep
	/// is set to true, all child nodes are recursively cloned, resulting
	/// in an exact copy of the original object's document tree.
	XMLNode &amp;
	XML::cloneNode(XMLNode &amp;newnode, bool deep) {
	...
	}
      </programlisting> 
    </para>
    
    <para>
      The <emphasis>\brief</emphasis> keyword means that the 
      text becomes associated
      when listing all the classes on the generated web pages. The
      text after the blank line becomes the detailed description which
      appears on the generated web page for that class and method.
    </para>
  </sect2>

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