Using @defblock / @linemacro for API documentation

[Gavin Smith]

(switching from help-texinfo to bug-texinfo)

On Mon, Mar 06, 2023 at 10:45:05PM +0900, Jean-Christophe Helary wrote:
> >> I found the example with a nested @def* block interesting:
> >> 
> > 
> >> https://luis-felipe.gitlab.io/texinfo-css/Elements.html#Definitions
> >> 
> > 
> >> It reminded me of this thread:
> >> 
> > 
> >> https://lists.gnu.org/archive/html/bug-texinfo/2022-02/msg00000.html
> >> 
> > 
> >> Nested @def* could be a good way to define parameters, return values, and
> >> so on. With the new @defline facility the user could define macros like
> >> @param that expanded to "@defline Parameter".
> > 
> > That would be nice because I think those kinds of nested definitions make 
> > it easier to find the information you're looking for compared to defining 
> > parameters within the paragraphs that explain a given command, procedure, 
> > etc.<publickey - luis.felipe.la@protonmail.com - 0x12DE1598.asc>


Here's an example of how @defline and @linemacro can be used together
to imitate the format of the numpy documentation at
https://numpy.org/doc/1.24/reference/generated/numpy.fft.fft.html#numpy.fft.fft
(numpy was referred to in the previous discussion).

Currently this only works with texinfo.tex.


@linemacro param {param, type}
@defline Parameter @var{\param\} @code{ : \type\}
@end linemacro
@linemacro returns {param, type}
@defline {Return Value} @var{\param\} @code{ : \type\}
@end linemacro
@linemacro raises {exception}
@defline {Exception} \exception\
@end linemacro

@set txidefnamenospace
@clear txicodevaristt

@defblock
@defline Function fft.fft (a, n=@code{None}, axis=@code{-1}, norm=@code{None})  
Compute the one-dimensional discrete Fourier Transform.

@defblock
@param a array_like
Input array, can be complex.

@param n int, optional
Length of the transformed axis of the output.
If @var{n} is smaller than the length of the input, the input is cropped.

@param axis int, optional
Axis over which to compute the FFT.

@returns out complex ndarray
The truncated or zero-padded input.

@raises IndexError
If @var{axis} is not a valid axis of @var{a}.

@end defblock

@end defblock