[Geany-Devel] [FT-plugins] Proposed "Features"
kugel at xxxxx
Thu Sep 1 08:47:46 UTC 2016
Am 01.09.2016 um 08:05 schrieb Lex Trotman:
> On 1 September 2016 at 15:08, Thomas Martitz <kugel at rockbox.org> wrote:
>> Am 31.08.2016 um 17:26 schrieb Lex Trotman:
>>>> I think we all agree that help of language-specific plugins is
>>>> desired/required. No need to restate "we need language specific support"
>>>> the time.
>>>> We just disagree on how the language-specific knowledge is transported to
>>>> Geany, other plugins and the user.
>>> Well, I read your previous comments such as "But *just* the data,
>>> don't offload very specific use cases onto them" (and to some extent
>>> this one too) as saying that all the plugin has to do is return some
>>> data (tags) and Geany will take it from there and all I was doing was
>>> making sure it was clear that its unlikely that Geany will be able to
>>> "take it from there" in any meaningful way, based purely on data,
>>> without filetype specific knowledge inside Geany.
>> Here we disagree. I think it is possible to extent TM/Geany sufficiently to
>> encode this information in generic ways. As an example, template
>> instantiation yields different types. TM could tread them as different
>> types. Any variable will be of one of the types, so calltips would just
> It is of course always "possible", after all its a mere matter of programming :)
> And of course an instantiated class template is just a type, but what
> is the name of std::vector<int> and std::vector<A> so it can be looked
vector<int> and vector<A>, with scope being std (I think trailing scope
delimiters are not saved in the scope string of TMTag, just intermediate
>>> Geany must ask the plugin for the answer for each element of
>>> functionality the plugin provides. This means that those elements
>>> have indeed simply moved "Geany's deficiencies to the plugin space" as
>>> you put it. This is good and necessary.
>> To me this is not good because it makes it impossible to use the information
>> for other use cases in Geany or other plugins.
>> For example, I want to keep my quickswitch plugin that allows me to jump to
>> arbitrary tags, even if a ft-plugin is doing all the hard work to parse
> Good point, the FT-Plugin API needs functions for goto declaration and
> goto definition. Unlike TM, the plugin can take language and scope
> rules into account when it answers, so you get the right declaration,
> continuing the theme above, where would you go to find the declaration
> of std::vector<int> ?
> Certainly not the line:
> std::vector<int> list_of_ints;
> thats the declaration of `list_of_ints` but thats the only place that
> `std::vector<int>` exists in the code.
Ideally the header which defines std::vector<A> would be found (and
maybe opened) right? Currently this isn't possible with TMTag (as
var_type can only contain either vector<A> or vector<int>) but it
shouldn't be too hard to make it work. Like adding a generic_type field
which is set for each template instance (containing vector<A>), then
instead of looking up the decl of generic_type if it's not NULL,
Of course, the TMTags associated with vector<A> and vector<int> would
have to provided by the ft-plugin too (maybe there needs to be a new
TMTagType for vector<A> too).
>>> Of course moving the problem to plugin space doesn't mean the plugin
>>> can't use Geany facilities where their capabilities fit the
>>> requirement. But we should not try to expand Geany to handle all
>>> types of functionality.
>>> Like your TM query interface, the plugins should answer the questions
>>> like "whats the autocomplete here", "what calltips are relevant here"
>>> with a flat list of data relevant to the question.
>> My TM query interface wants to return all matching tags, including those
>> found by ft-plugins. Can this be done?
> Only if your query plugin queries the FT plugin.
So that means
1) My plugin contains code specifically for each known ft-plugin (i.e.
not the plugin API)
2) There needs to be a shared library which my plugin can use to call
into the other plugin
3) My plugin needs to know if and when to ask a ft-plugin
This is not acceptable. Or are you saying Geany could provide a wrapper
for this as Matthew suggested? That might be workable.
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