About vala
==========
valac, the Vala compiler, is a self-hosting compiler that translates
Vala source code into C source and header files. It uses the GObject
type system to create classes and interfaces declared in the Vala
source code.
The syntax of Vala is similar to C#, modified to better fit the
GObject type system. Vala supports modern language features as the
following: Interfaces, Properties, Signals, Foreach, Lambda
expressions, Type inference for local variables, Generics, Non-null
types, Assisted memory management, Exception handling, Type modules
(Plugins)
Vala is designed to allow access to existing C libraries, especially
GObject-based libraries, without the need for runtime bindings. All
that is needed to use a library with Vala is an API file, containing
the class and method declarations in Vala syntax. Vala currently comes
with bindings for GLib and GTK+ and many others from the GNOME
Platform.
Using classes and methods written in Vala from an application written
in C is not difficult. The Vala library only has to install the
generated header files and C applications may then access the GObject-
based API of the Vala library as usual. It should also be easily
possible to write a bindings generator for access to Vala libraries
from applications written in e.g. C# as the Vala parser is written as
a library, so that all compile-time information is available when
generating a binding.
News
====
* Highlights:
- Add support for async main and yield statements in main block [#1275]
- Add foreach statement support for GLib.Array and GLib.Sequence
* Various improvements and bug fixes:
- codegen:
+ Avoid symbol clashes with "va_*" from "stdarg.h"
+ Access of inline allocated array is guaranteed to be non null [#1282]
+ Don't uncoditionally null check callback_func for GLib.Closure [#1282]
+ Access of stack allocated struct is guaranteed to be non null [#1282]
+ Write array length of formal parameters with fixed length
- vala:
+ Require lvalue access of delegate target/destroy "fields" [#857]
+ Implement missing YieldStatement.accept()
+ Add support to infer return type of dynamic signals
+ Transform assignment of an array element as needed [#889] [#1258]
- parser: Reduce the source reference of main block method to its beginning
- parser: Improve handling of nullable VarType in with-statement
- manual: Update from wiki.gnome.org
* Bindings:
- glib-2.0,gio-2.0: Update 2.72 symbols
- gstreamer: Update from 1.19.3+ git master
- gtk4: Update to 4.6.0+a092986a
- glib-2.0: Fix criticals in string.joinv() with arrays that start with null
- vapi: Add linux-media bindings (linux/media.h)
- alsa: Add/fix *.alloca() functions
- posix: Add limits.h binding
- v4l2: Update V4l2.Capabilities and fix some inline arrays
ChangeLog
=========
https://download.gnome.org/sources/vala/0.55/vala-0.55.2.changes (3.83K)
Download
========
https://download.gnome.org/sources/vala/0.55/vala-0.55.2.tar.xz (3.76M)
sha256sum: 746e202c6833c520bb590ce996d2014a1937cc3776dcf0234d5f699a14ab6540
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