Create regen/feature.pl

This script generates lib/feature.pm.  Soon it will be made to gener-
ate other files, too.

Cross/Makefile-cross-SH

@@ -848,6 +848,7 @@ CHMOD_W = chmod +w
 #	opcode.pl:	opcode.h opnames.h pp_proto.h
 #	regcomp.pl:	regnodes.h
 #	warnings.pl:	warnings.h lib/warnings.pm
+#	feature.pl:	lib/feature.pl
 # The correct versions should be already supplied with the perl kit,
 # in case you don't have perl available.
 # To force them to be regenerated, run
@@ -856,7 +857,8 @@ CHMOD_W = chmod +w
 # (make regen_headers is kept for backwards compatibility)
 
 AUTOGEN_FILES = opcode.h opnames.h pp_proto.h proto.h embed.h embedvar.h \
-		perlapi.h perlapi.c regnodes.h warnings.h lib/warnings.pm
+		perlapi.h perlapi.c regnodes.h warnings.h lib/warnings.pm \
+		lib/feature.pm
 
 .PHONY: regen_headers regen_all
 

MANIFEST

@@ -4822,6 +4822,7 @@ regcomp.h			Private declarations for above
 regcomp.sym			Data for regnodes.h
 regen/embed_lib.pl		Reads embed.fnc and regen/opcodes
 regen/embed.pl			Produces {embed,embedvar,proto}.h
+regen/feature.pl		Generates feature.pm
 regen/keywords.pl		Program to write keywords.h
 regen/mg_vtable.pl		generate mg_vtable.h
 regen/mk_PL_charclass.pl	Populate the PL_charclass table

Makefile.SH

@@ -1153,6 +1153,7 @@ CHMOD_W = chmod +w
 #	opcode.pl:	opcode.h opnames.h pp_proto.h
 #	regcomp.pl:	regnodes.h
 #	warnings.pl:	warnings.h lib/warnings.pm
+#	feature.pl:	lib/feature.pm
 # The correct versions should be already supplied with the perl kit,
 # in case you don't have perl available.
 # To force them to be regenerated, run
@@ -1161,7 +1162,8 @@ CHMOD_W = chmod +w
 # (make regen_headers is kept for backwards compatibility)
 
 AUTOGEN_FILES = opcode.h opnames.h pp_proto.h proto.h embed.h embedvar.h \
-		perlapi.h perlapi.c regnodes.h warnings.h lib/warnings.pm
+		perlapi.h perlapi.c regnodes.h warnings.h lib/warnings.pm \
+		lib/feature.pm
 
 .PHONY: regen_headers regen_all
 

lib/feature.pm

@@ -1,8 +1,12 @@
+# -*- buffer-read-only: t -*-
+# !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+# This file is built by regen/feature.pl.
+# Any changes made here will be lost!
+
 package feature;
 
 our $VERSION = '1.25';
 
-# (feature name) => (internal name, used in %^H)
 my %feature = (
     say             => 'feature_say',
     state           => 'feature_state',
@@ -13,33 +17,27 @@ my %feature = (
     unicode_strings => 'feature_unicode',
 );
 
-# These work backwards--the presence of the hint elem disables the feature:
 my %default_feature = (
-    array_base      => 'feature_no$[',
+    array_base => 'feature_no$[',
 );
 
-# This gets set (for now) in $^H as well as in %^H,
-# for runtime speed of the uc/lc/ucfirst/lcfirst functions.
-# See HINT_UNI_8_BIT in perl.h.
-our $hint_uni8bit = 0x00000800;
-
-# NB. the latest bundle must be loaded by the -E switch (see toke.c)
-
 our %feature_bundle = (
-    "default" => [keys %default_feature],
-    "5.10" => [qw(say state switch array_base)],
-    "5.11" => [qw(say state switch unicode_strings array_base)],
-    "5.15" => [qw(say state switch unicode_strings unicode_eval
-                  evalbytes current_sub)],
+    "5.10"    => [qw(array_base say state switch)],
+    "5.11"    => [qw(array_base say state switch unicode_strings)],
+    "5.15"    => [qw(current_sub evalbytes say state switch unicode_eval unicode_strings)],
+    "5.9.5"   => [qw(array_base say state switch)],
+    "default" => [qw(array_base)],
 );
 
+
 # Each of these is the same as the previous bundle
-for(12...14, 16) {
+for (12,13,14,16) {
     $feature_bundle{"5.$_"} = $feature_bundle{"5.".($_-1)}
 }
-
-# special case
-$feature_bundle{"5.9.5"} = $feature_bundle{"5.10"};
+# This gets set (for now) in $^H as well as in %^H,
+# for runtime speed of the uc/lc/ucfirst/lcfirst functions.
+# See HINT_UNI_8_BIT in perl.h.
+our $hint_uni8bit = 0x00000800;
 
 # TODO:
 # - think about versioned features (use feature switch => 2)
@@ -372,3 +370,5 @@ sub croak {
 }
 
 1;
+
+# ex: set ro:

regen.pl

@@ -23,6 +23,7 @@
 regcomp.pl
 warnings.pl
 embed.pl
+feature.pl
 );
 
 my $tap = $ARGV[0] && $ARGV[0] eq '--tap' ? '# ' : '';