Even though ownership info belongs to params/returns/etc at syntax
level, we can still store it in the type and turn several API funcs
into one this way.
This is the new ownership system for Eolian, working on params,
returns, struct fields or events directly rather than specifying
ownership at type level. As the new system will evolve it will
gain missing features and necessary checks.
First steps toward explicit function pointer support in eolian.
To declare a function pointer type, use the following syntax, similar to
a regular eolian method declaration.
function FunctionName {
params {
...
}
return: Return type
}
Units are Eolian files (eo/eot). Each unit contains information
about its class, dependencies, variables and types. This allows
for saner checking to be done.
This allows us to unify retrieval of docs for both regular and
overridden funcs without having two separate APIs. It's currently
missing validation and docgen is still not adjusted properly for
it either, but at least there's this. Enables retrieval of docs
for overridden funcs by default as well.
As there is no need to have separate is_auto, is_empty and
is_pure_virtual for functions and implements (each function has
its own base implement by default) I removed the function ones.
Instead, I added a way to retrieve a function's base implement
so that you can instead do the checks on the implement even when
you only have the function.
I also moved base implement build directly into the parser instead
of the database filler. That allows for significant cleanup. I
also removed distinction of implement pointers in Eolian_Function
for get and set as implements now always contain an entire thing
so the pointer was always the same anyway.
Things should still behave more or less the same, but ordering
of generated functions has changed because ordering of implements
has changed.
Previously one API used just virtual (incorrect) and one used
virtual_pure (which just sounds weird). So unify with a single
name, pure_virtual, similar as in other lanugages.
This does not change eo file syntax yet.
Now all error/unknown/etc values returned from APIs are zero,
previously it was a mix of zeroes and minus ones. Also, some
enums that had no error/invalid value before have one now, which
allows for better distinction between what is an error and what
is an intended result.
Strictness of various Eolian APIs has been enhanced, for example
eolian_class_function_get_by_name now won't return anything if
you request an EOLIAN_PROPERTY and the found func is just an
EOLIAN_PROP_GET, and various APIs won't accept arbitrary inputs
like EOLIAN_UNRESOLVED or EOLIAN_PROPERTY now, instead you will
need to provide EOLIAN_PROP_GET, EOLIAN_PROP_SET or EOLIAN_METHOD
explicitly.
The purpose of this is to reduce potential bugs and fix ambiguous
behavior. Thanks to use of EINA_SAFETY, appropriate errors should
be printed into terminal when an API is used incorrectly.
Adds two new type types, STATIC_ARRAY and TERMINATED_ARRAY. Static arrays are
only allowed as struct members right now - they translate to regular C static
arrays (allowing them elsewhere wouldn't be good, as C isn't very good at
working with the size information). Terminated arrays are basically sequences
of data terminated at the end. The base type of static arrays can be any type
that is not marked ref (explicit ref may get allowed later). The base type of
terminated arrays has the same restriction plus that it has to be either
implicitly reference type (i.e. translating to pointer in C), integer type
or a character. In case of ref types, the terminator is NULL. In case of
integer types, the terminator is a zero. In case of character types, the
terminator is also a zero (null terminator like C strings).
@feature
Inner type can now be retrieved as a base type of the type.
If the type has two inner types or more, there is a new API that allows you to
get the second inner type by calling it on the first one (same would apply to
getting third via second etc.).
This API is simpler to use and doesn't require an iterator.
It's now possible to mark struct fields and function params as "references",
which causes them to become pointers in C (in bindings, they become whatever
is necessary). They're not a part of the type and are much more restricted
than pointers, allowing bindings to be easier. This system will be gradually
utilized and expanded as required.
@feature
Previously events used to use class name as a prefix and ignored eo_prefix
when specified. This is no longer the case. Events follow eo_prefix by default
now. In order to get around this for classes where this is undesirable, a new
field event_prefix was added which takes priority over eo_prefix. If neither
is specified, class name is used like previously.
@feature
This allows generators to silence type errors in validation in order
to reduce duplicate error messages when generating multiple files.
Also adjusted the C generator to only emit type errors when generating
Eo header files.
@feature
We have to use void in a function declaration if we want no function
parameters. Using just empty parenthesis means the function takes an
unspecified number of parameters.
We had it correct for most declarations and this series fixes it for
the rest.
This doesn't quite work yet as path sanitization needs to be done for it to
work correctly. For now this code path is disabled and will be enabled once
all paths are correctly sanitized.
Daniel Kolesa
Lauro Moura
Cedric BAIL
Stefan Schmidt