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\cond keyword enhancement (Origin: bugzilla #630645) #3945

doxygen opened this Issue Jul 2, 2018 · 0 comments


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doxygen commented Jul 2, 2018

status VERIFIED severity enhancement in component general for ---
Reported in version unspecified on platform Other
Assigned to: Dimitri van Heesch

Original attachment names and IDs:

On 2010-09-26 18:15:16 +0000, albert wrote:

In the Doxygen maillist (subject: \cond keword) there has been a discussion after the following initial posting:

In Doxygen it is possible to have some documentation depending of the setting of ENABLED_SECTIONS by means of the kewords:
\if, \ifnot, \else, \elseif, \endif these keywords work within one documentation block;
\cond and \endcond work in different comment blocks.

In the current project I need a \condnot (analogous to \ifnot).

I would therefore propose to add the keyword \condend to Doxygen. For completeness I would also propose to add \elseifnot

The result of the discussion is that an enhancement would be the best in the form:

I think a better approach is to allow simple constant C-style expressions, i.e.


or even:


The same could be done for \cond.

Where compatibility (\ifnot) has to be considered.

On 2012-09-02 17:38:36 +0000, albert wrote:

This bug has been split into 2 parts:

  • bug_683215 for the \condnot keyword
  • extension of the logical expression with \cons and \if (this bug)

On 2012-09-09 17:59:01 +0000, albert wrote:

Created attachment 223857
PATCH: entension of logical expersions for @if, @cond etc.

This patch, for my convenience put in doxygen.cpp and doxygen.h, enables the possibility to use logical expressions with the commands like @if, @cond etc.
A logical expressing consisting of ENABLED_SECTION names having the value TRUE and a missing section names having the value FALSE. These values can be used in combination with the logical operators & (AND), | (OR) and ! (NOT). Furthermore round brackets are possible to change the order of evaluation inside the expression.

This patch is based on the C++ expression parser by Jos de Jong, which again is based on the example "A mini C++ Interpreter" from the book "The art of C++" by Herbert Schildt.

On 2012-10-07 12:42:13 +0000, Dimitri van Heesch wrote:

Thanks, I'll include the patch in the next subversion update, but decided to restructure it quite a bit to bring it more in line with the rest of the code.

On 2012-12-26 16:09:05 +0000, Dimitri van Heesch wrote:

This bug was previously marked ASSIGNED, which means it should be fixed in
doxygen version 1.8.3. Please verify if this is indeed the case. Reopen the
bug if you think it is not fixed and please include any additional information
that you think can be relevant.

On 2013-01-05 13:28:20 +0000, albert wrote:

Tested and works as expected.

@doxygen doxygen closed this Jul 19, 2018

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