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Support BoxedInline without a get_type function #1297

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Support BoxedInline without a get_type function #1297

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wash2
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@wash2 wash2 commented Dec 29, 2021 •
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This is my attempt at supporting BoxedInline without a get_type function #1236 #1295. Generating the bindings for gmodule does not panic and now outputs:

[WARN  libgir::analysis::functions] Function g_module_symbol has unsupported outs
[WARN  libgir::analysis::functions] Function g_module_open_full has unsupported outs
[ERROR libgir::analysis::record] Missing memory management functions for GModule.Module

@wash2 wash2 changed the title Support BoxedInline without a get_type function #1295 #1236 Support BoxedInline without a get_type function Dec 29, 2021
sdroege
sdroege reviewed Dec 30, 2021
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src/codegen/general.rs Outdated
sys_crate_name,
get_type_fn
)?;
if let Some((ref get_type_fn, _get_type_version)) = get_type_fn {
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This requires a get_type function, or otherwise more changes in glib are needed

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For the case of not BoxedInline but normal Boxed

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So the get_type_fn here can't be None then?

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Well, there won't be a copy/free function here otherwise and that won't compile without further changes in glib

sdroege
sdroege reviewed Dec 30, 2021
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src/library.rs Outdated
@@ -1085,18 +1085,19 @@ impl Library {
}
}
if let Some(tid) = env.library.find_type(0, &full_name) {
let gobject_id = env.library.find_type(0, "GObject.Object").unwrap();
let gobject_id = env.library.find_type(0, "GObject.Object");
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If you don't have GObject in your dependencies then there can't be any class hierarchy at all, so the code below should simply not run

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Ok gotcha

sdroege
sdroege reviewed Dec 30, 2021
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Otherwise makes sense.

Why do you want to create bindings for GModule though? I think that's going to require writing the whole bindings manually to end up with anything usable and somewhat safe. The autogenerated bindings won't be usable.

@sdroege sdroege linked an issue Dec 30, 2021 that may be closed by this pull request
Panic on GIR not_bound mode for GModule #1295
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bilelmoussaoui
bilelmoussaoui reviewed Dec 30, 2021
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src/codegen/record.rs Outdated
&analysis.init_function_expression,
&analysis.copy_into_function_expression,
&analysis.clear_function_expression,
&analysis.glib_get_type,
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maybe analysis.glib_get_type.map(|ref a,_| a) or something like that to avoid passing the version that's unneeded here ?

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Ok

@wash2
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wash2 commented Dec 30, 2021

Why do you want to create bindings for GModule though? I think that's going to require writing the whole bindings manually to end up with anything usable and somewhat safe. The autogenerated bindings won't be usable.

I want to use GModule to support "plug-ins"
I was not aware that the auto-generated bindings would not be usable, but I could try manually writing safe bindings if necessary.

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sdroege commented Dec 30, 2021

I was not aware that the auto-generated bindings would not be usable

The -sys bindings should be fine, the non-sys ones probably only have very few functions generated and you'll have to be very careful here with memory safety. Take a look at all the complications in the libloading API for example.

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wash2 commented Dec 30, 2021

I was not aware that the auto-generated bindings would not be usable

The -sys bindings should be fine, the non-sys ones probably only have very few functions generated and you'll have to be very careful here with memory safety. Take a look at all the complications in the libloading API for example.

Ok, thanks, I'll check that out

bilelmoussaoui
bilelmoussaoui reviewed Dec 30, 2021
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Wouldn't this work ?

src/codegen/general.rs Outdated
@@ -377,7 +377,7 @@ pub fn define_auto_boxed_type(
init_function_expression: &Option<String>,
copy_into_function_expression: &Option<String>,
clear_function_expression: &Option<String>,
get_type_fn: &str,
get_type_fn: Option<&String>,
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Suggested change
get_type_fn: Option<&String>,
get_type_fn: Option<&str>,

src/codegen/record.rs Outdated
&analysis.init_function_expression,
&analysis.copy_into_function_expression,
&analysis.clear_function_expression,
analysis.glib_get_type.as_ref().map(|(ref a, _)| a),
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Suggested change
analysis.glib_get_type.as_ref().map(|(ref a, _)| a),
analysis.glib_get_type.as_ref().map(|(ref a, _)| a).as_deref(),

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Coercion still fails for me with as_deref()

@bilelmoussaoui bilelmoussaoui mentioned this pull request Jan 1, 2022
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Panic on GIR not_bound mode for GModule
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@wash2 @sdroege @bilelmoussaoui