PERCEPS / Bugs / #26 Errors with {foreach} loops

#26 Errors with {foreach} loops

Status: open

Owner: nobody

Labels: Templates (6)

Priority: 5

Updated: 2015-01-22

Created: 2001-08-25

Creator: Thomas Bryan

Private: No

Submitted by Noel Welsh on Fri, 17 Sep 1999 10:10:34
+0100

I'm getting very near to finishing some C to HTML
templates, but I've run into error processing if's
within foreach loops.

I have loops like

{foreach typedef sort "$a cmp $b;"}
{if first}
<h3 class=toc-section-title><a
name="types">Types</a></h3>
<ul>
{endif}
<li>
<a
href="#type-{name}">{name}</a> 
{brief}
</li>
{if last}
</ul>
{endif}
{next}

to generate the table of contents. The first or
last directive is skipped, apparently at random,
leading to lists within lists that crawl towards
the right of the screen. It's probably my
stupidity, but I've been staring at it too long to
see what's wrong. Either that or it's gremlins. Or
there is a bug in Perceps. Attached below is the
full template. I plan to release these soon, in
case anyone is interested.

---

{keephtml}
<html>
<head>
<title>Description of {module}</title>
<link rel="stylesheet" type="text/css"
href="perceps.css" title="Default
Style">
</head>

<body>

<table width=100%>
<tr>
<td class=topic>
<h1>
Documentation
</h1>
</td>
<td class=title>
<h1>
{module}
</h1>
</td>
</tr>
</table>

<a href="#macros">macros</a> <a
href="#types">types</a> <a
href="#variables">variables</a> <a
href="#functions">functions</a>

{foreach macro}
{if name /MODULE/}

{brief}
{detail}
{endif}
{next}

{foreach macro}
{if first}
<h3 class=toc-section-title><a
name="macros">Macros</a></h3>
<ul>
{endif}
{if !name /MODULE/}
<li>
<a
href="#macro-{name}">{name}</a> 
{brief}
</li>
{endif}
{if last}
</ul>
{endif}
{next}

{foreach global sort "$a cmp $b;"}
{if first}
<h3 class=toc-section-title><a
name="variables">Variables</a></h3>
<ul>
{endif}
<li>
<a
href="#variable-{name}">{name}</a> 
{brief}
</li>
{if last}
</ul>
{endif}
{next}

{foreach func sort "$a cmp $b;"}
{if first}
<h3 class=toc-section-title><a
name="functions">Functions</a></h3>
<ul>
{endif}
<li>
<a
href="#function-{name}">{name}</a> 
{brief}
</li>
{if last}
</ul>
{endif}
{next}

<h2 class=detail-section-title>Macros Detail</h2>
{foreach macro sort "$a cmp $b;"}
{if public}
public
<a
name="macro-{name}">{name}</a>
{brief}
{detail}
<a href="#macros">Return
to
Macro Summary</a>
<hr class=subsection-separator>
{endif}
{next}

{foreach macro sort "$a cmp $b;"}
{if private}
private
<a
name="macro-{name}">{name}</a>
{brief}
{detail}
<a href="#macros">Return
to
Macro Summary</a>
<hr class=subsection-separator>
{endif}
{next}

<h2 class=detail-section-title>Types Detail</h2>
{foreach typedef sort "$a cmp $b;"}
{if public}
public
<a
name="type-{name}">{name}</a>
{brief}
{detail}
<a href="#types">Return
to Type
Summary</a>
<hr class=subsection-separator>
{endif}
{next}

{foreach typedef sort "$a cmp $b;"}
{if private}
private
<a
name="type-{name}">{name}</a>
{brief}
{detail}
<a href="#types">Return
to Type
Summary</a>
<hr class=subsection-separator>
{endif}
{next}

<h2 class=detail-section-title>Variables Detail</h2>
{foreach global sort "$a cmp $b;"}
{if public}
public
<a
name="variable-{name}">{name}</a>
{brief}
{detail}
<a
href="#variables">Return to
Variable Summary</a>
<hr class=subsection-separator>
{endif}
{next}

{foreach global sort "$a cmp $b;"}
{if private}
private
<a
name="variable-{name}">{name}</a>
{brief}
{detail}
<a
href="#variables">Return to
Variable Summary</a>
<hr class=subsection-separator>
{endif}
{next}

<h2 class=detail-section-title>Functions Detail</h2>
{foreach func sort "$a cmp $b;"}
{if public}
public
<a name="function-{name}">{type}
{name}({args})</a>
{brief}
{if return}
<h3 class=detail-return>Return Value:</h3>
{return}
{endif}
{if see}
<h3 class=detail-see-also>See Also:</h3>
{see}
{endif}
{detail}
<a
href="#functions">Return to
Function Summary</a>
<hr class=subsection-separator>
{endif}
{next}

{foreach func sort "$a cmp $b;"}
{if private}
private
<a name="function-{name}">{type}
{name}({args})</a>
{brief}
{if return}
<h3 class=detail-return>Return Value:</h3>
{return}
{endif}
{if see}
<h3 class=detail-see-also>See Also:</h3>
{see}
{endif}
{detail}
<a
href="#functions">Return to
Function Summary</a>
<hr class=subsection-separator>
{endif}
{next}

</body>
</html>

Discussion

Thomas Bryan - 2001-08-25

Sample input and output

bug33.tgz

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Thomas Bryan - 2001-08-25

Logged In: YES
user_id=1197

Submitted by Noel Welsh on Fri, 17 Sep 1999 14:34:44 +0100

Hi Tom,

> It may be a bug in PERCEPS. Note, though, that
> you must write "sort" if you plan to use 'if
> first' and 'if last'. For example, you have a
> {foreach macro} followed by an {if first}. You
> should say, {foreach macro sort} before you use
> the {if first}. Otherwise, I don't know how the
> if first and if last will behave. Fix that
> first.

Ok, it's fixed, but the lists still don't get
closed. I've attached the latest version, plus
sample input and output.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Errors with {foreach} loops

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#26 Errors with {foreach} loops

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