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* Add 'indirect' feature that can be turned off to disable indirect object syntaxDagfinn Ilmari Mannsåker2020-02-161-10/+23
| | | | Co-authored-by: Tony Cook <tony@develop-help.com>
* Add the `isa` operatorPaul "LeoNerd" Evans2019-12-091-8/+23
| | | | | | | | | | | | | | | | | | Adds a new infix operator named `isa`, with the semantics that $x isa SomeClass is true if and only if `$x` is a blessed object reference that is either `SomeClass` directly, or includes the class somewhere in its @ISA hierarchy. It is false without warning or error for non-references or non-blessed references. This operator respects `->isa` method overloading, and is intended to replace boilerplate code such as use Scalar::Util 'blessed'; blessed($x) and $x->isa("SomeClass")
* updates to $^H{feature_validname} now update cop_featuresTony Cook2019-12-051-0/+117
| | | | This removes $^{FEATURE_BITS}, since it's no longer needed.
* remove now unneeded FEATURE_IS_ENABLED()Tony Cook2019-10-301-7/+0
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* Faster feature checksTony Cook2019-10-301-13/+45
| | | | | | | | | | | | | | | Perform only a bit check instead of a much more expensive hash lookup to test features. For now I've just added a U32 to the cop structure to store the bits, if we need more we could either add more bits directly, or make it a pointer. We don't have the immediate need for a pointer that warning do since we don't dynamically add new features during compilation/runtime. The changes to %^H are retained so that caller() can be used from perl code to check the features enabled at a given caller's scope.
* Provide header guards to prevent re-inclusionJames E Keenan2018-12-041-0/+5
| | | | | | | | Per LGTM analysis: https://lgtm.com/projects/g/Perl/perl5/alerts/?mode=tree&ruleFocus=2163210746 and LGTM recommendation: https://lgtm.com/rules/2163210746/ For: RT 133699
* Remove support for setting $[ to a non-zero valueDagfinn Ilmari Mannsåker2018-09-261-7/+0
| | | | This removes arybase and all its surrounding machinery.
* Enable bitwise feature with ‘use v5.28’Father Chrysostomos2017-12-311-11/+17
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* Add declared_refs feature featureFather Chrysostomos2016-07-171-0/+6
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* Give feature.pm the concept of no-op featuresFather Chrysostomos2016-05-201-12/+0
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* Make postfix dereferencing work without the postderef featureAaron Crane2015-07-131-3/+2
| | | | | The feature still exists, for compatibility with code that tries to enable it, but it has no effect. The postderef_qq feature still exists, however.
* The postderef feature is no longer experimentalAaron Crane2015-06-271-12/+22
| | | | | | | | | | | | | | As proposed by RJBS. The "5.24" feature bundle (and therefore C<< use v5.24 >>) now enable postderef and postderef_qq. I can't find any precedent for what to do with the relevant experimental::* warnings category when an experimental feature graduates to acceptance. I have elected to leave the category in place, so that code doing C<< no warnings "experimental::postderef" >> will continue to work. This means that C<< use warnings "experimental::postderef" >> is also accepted, but has no effect.
* Add bitwise feature featureFather Chrysostomos2015-01-311-0/+6
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* Rename lvalue referencesFather Chrysostomos2014-10-171-2/+2
| | | | | Also correct the description of lvref magic. When it was first added, it was for list assignments only, but that soon changed.
* Add lvalue_refs feature featureFather Chrysostomos2014-10-101-0/+6
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* subroutine signaturesZefram2014-02-011-0/+6
| | | | | | | | | | Declarative syntax to unwrap argument list into lexical variables. "sub foo ($a,$b) {...}" checks number of arguments and puts the arguments into lexical variables. Signatures are not equivalent to the existing idiom of "sub foo { my($a,$b) = @_; ... }". Signatures are only available by enabling a non-default feature, and generate warnings about being experimental. The syntactic clash with prototypes is managed by disabling the short prototype syntax when signatures are enabled.
* Add postderef_qq feature featureFather Chrysostomos2013-10-051-1/+7
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* Add postderef feature featureFather Chrysostomos2013-10-051-0/+6
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* Add experimental lexical_subs featureFather Chrysostomos2012-09-151-0/+6
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* Tweak the FEATURE_IS_ENABLED() macro to avoid a bug in the HP-UX compiler.Nicholas Clark2012-04-121-1/+3
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* Add the fc keyword in regen/feature.plBrian Fraser2012-01-291-0/+7
| | | | It doesn't do anything yet.
* feature.h: Mask hints in CURRENT_FEATURE_BUNDLEFather Chrysostomos2012-01-281-1/+2
| | | | | | | | | | | | Otherwise CURRENT_FEATURE_BUNDLE will end up including any hints added later that happen to use higher bits. This was causing autobox to turn off all features, causing failures for Dist::Zilla::PluginBundle::AVAR. I’m not adding tests for this, as such tests would need constant tweaking in future perl developement. What autobox is doing is naughty and unsupported anyway.
* use VERSION needs to enable uni8bit hintFather Chrysostomos2011-12-241-0/+4
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* Make MAX_FEATURE_LEN reflect realityFather Chrysostomos2011-12-241-1/+1
| | | | | unicode_strings was not the longest string. We can determine it auto- matically, now that this macro is in a generated file.
* feature.h: FEATURE_IS_ENABLED can use CURRENT_HINTSFather Chrysostomos2011-12-241-1/+1
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* feature.h: Function for enabling bundlesFather Chrysostomos2011-12-241-0/+21
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* Move FEATURE_IS_ENABLED to feature.hFather Chrysostomos2011-12-241-0/+7
| | | | | It makes little sense to have it in perl.h any more. (Until recently, feature.h didn’t exist.)
* Eliminate ‘negative’ featuresFather Chrysostomos2011-12-241-1/+1
| | | | | | Now that we have hints in $^H to indicate the default feature bun- dle, there is no need for entries in %^H that turn features off by their presence.
* feature.h: Avoid compiler warningFather Chrysostomos2011-12-241-2/+1
| | | | unsigned >= 0 produces a warning, even if the 0 is actually a macro.
* Add macros for checking individual featuresFather Chrysostomos2011-12-241-0/+62
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* feature.h: Add macros for current hintsFather Chrysostomos2011-12-241-0/+4
| | | | | | | | | CURRENT_HINTS is not specific to features, but for now will be used by nothing else. It returns the compile-time or run-time hints, depend- ing on whether PL_curcop points to &PL_compiling. CURRENT_FEATURE_BUNDLE extracts the feature bundle number from the current hints.
* feature.h: Parenthesise macro definitionFather Chrysostomos2011-12-241-1/+1
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* Add feature.h, with constants for feature bundlesFather Chrysostomos2011-12-241-0/+20
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