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Version 3 (modified by Charles, 11 years ago)
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Cobra 0.9.5 Release Notes

This release has not been made yet. The release notes are being built up on this wiki page.

2013-12- to-do

To get Cobra 0.9.5, visit Downloads.

Below are the changes included in this release. There are to-do minor refinements and to-do fixes. At this point, the Cobra language is very stable and we're mostly refining and fixing as we put it into practice.

For even more details, browse the revision log which includes check-in comments and source code changes.

This release requires .NET 4.0 and higher (.NET 4.0 is now three years old). Cobra also runs on Mono and is tested on both Mac and Linux.

IDE

One of the most notable recent developments for Cobra is actually outside the compiler. The Cobra add-in for MonoDevelop / XamarinStudio offers syntax highlighting, background compilation, member completion suggestions, parameter completion, mouseover tooltips and go to declaration.

Language

Added modifier sections in type declarations. For example:

class C

    private, shared

        def foo
            pass

        def bar
            pass

    def baz
        pass

Support optional and named parameters. For example:

class X

    def main
        .show('foo')
        .show('bar', 5)
        .show('baz', count = 3)
        .show(s='can', count = 2)

    def show(s as String, count as int = 2)
        for i in count, print s
        print

Compiler

Provide improved error checking on arguments of initializer/constructor calls.
Error checking enhancement: Confusing message on missed of in generics call.
Fixed: An unfinished assignment statement causes an internal error instead of a normal error message ("unexpected end of file").
Fixed: Internal error for dynamic argument on a method overload.
Fixed: Internal error if source file ends in the middle of a comma separated expression.
Fixed: Cobra internal error when mixin declared after class.
Fixed: In libraries, a field and property that differ only by case of a type with the same name triggers an internal compiler error.
Fixed: Token on line after end of docstring causes parser confusion and 'useless error'.
Fixed: Calling a method with an underscore name from within an initializer/constructor that is overloaded, causes an internal compiler error.
Fixed: The compiler gracefully handles I/O exceptions when trying to delete intermediate files, but not unauthorized access exceptions.
Fixed: If the compiler cannot delete an intermediate file, no warning is recorded.
Fixed: Cobra gives a false parse error if there is a blank line after a doc string and before the get section of a property.
Fixed: Using a namespace as a generic parameter can cause an internal error.
Fixed: Raising a shared event causes an internal compiler error.
Fixed: An anonymous method inside a method with a local variable named result causes a false compilation error.
Fixed: Some CLR libraries cause an internal error when read by the compiler, specifically static readonly generics.
Fixed: Some object creation expressions can cause an internal compiler error if one or more of the arguments has an error.

Library / Run-time

Changed Cobra's Set<of T> to inherit from .NET 4's HashSet?<of T>.

Added new Process extension methods:

def runAndCaptureOutput as ProcessOutput?
def runAndCaptureOutput(verbose as false) as ProcessOutput?

The return value can be queried for .standardOutput, .errorOutput and .combinedOutput.

In CobraCommand.find, check the C: drive if an attempted file system path is not found on the current drive.
New compiler API improvements. See changeset:2987 changeset:2990 changeset:3014 changeset:3016
Fixed: Accessing Keywords.groups in Cobra.Compiler throws an exception
Added INode.goToDefinitionLocation for IDEs.

Command Line

Enhanced -lib: option to accept {EnvironmentVariables} and {@latest}.
Minor tweaks to -native-compiler-arg command line option. Now singular. Was always an accumulator.

Installer

There is no explicit -net4 option as .NET 4.0 and higher is now the base requirement.
Verify that libraries installed in the GAC have the correct version number.
Locate the gacutil that comes with Visual Studio 2012.
Added installer support for Windows 8.1 SDK.
Fixed: When the installer is testing that hello.cobra can be compiled with the new compiler, it does not respect any -platform argument that was passed to the installer, resulting in an error.

Other

Added MonoDevelop solution file for the Cobra compiler.
Added msbuild/xbuild support. For example, there is now a CobraCompiler? ToolTask?. See also changeset:3052
There have been plenty of documentation improvements through the wiki. See StandardLibraryExtensionMethods, which will lead to other documentation pages.

Credits

Cobra is a community-driven, open source project under the MIT license. For this release, thanks go to:

hopscc
nerdzero
dwilliamii
Chasm
DelphiGuy
Jonno

Additional people contributed through testing and discussion.