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8f67bea @fglock Perlito version 8.0
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1 TODO list for Perlito5
2
d6cad9b @fglock Perlito5 - TODO update
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3
25b8875 @fglock Perlito5 - TODO update
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4 * perlito5 command-line
e4641d7 @fglock Perlito - extensive TODO update
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5
6
8f67bea @fglock Perlito version 8.0
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7 * libraries
8
3004b77 @fglock Perlito5 - cleanup, update TODO
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9 -- these should probably go into namespace Perlito5X::*
10
ce7ce91 @fglock Perlito - TODO update
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11 -- Test (implemented as Perlito5::Test)
3004b77 @fglock Perlito5 - cleanup, update TODO
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12
ce7ce91 @fglock Perlito - TODO update
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13 -- Data::Dumper (implemented as Perlito5::Dumper)
8f67bea @fglock Perlito version 8.0
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14
24c23f7 @fglock Perlito5 - TODO update
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15 -- create perlito5-specific libs for:
7aeb314 @fglock Perlito5 - TODO update
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16 feature.pm
17 Config.pm
18 overload.pm
19 bytes.pm
20 integer.pm
21 constant.pm
22 lib.pm
23 Carp.pm
24 vars.pm
25 Tie::Array
26 Tie::Hash
27 Tie::Scalar
24c23f7 @fglock Perlito5 - TODO update
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28
4d56b5d @fglock Perlito5 - add $ENV{PERL5LIB} to @INC
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29 alternately, check $^H for strictness - such that perl's own strict.pm just works
30 and ${^WARNING_BITS} for warnings
31
8f67bea @fglock Perlito version 8.0
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32
7b982c3 @fglock Perlito5 - update TODO
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33 * Parser
34
2537119 @fglock Perlito5 - TODO update
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35 -- "'" meaning "::"
36 $'m # $::m
37 $m' # String found where operator expected
38
39 package X'Y # X::Y
40 package X' # Invalid version format (non-numeric data)
41
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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42 -- attributes
43 http://perldoc.perl.org/attributes.html
c2716c0 @fglock Perlito5 - parser - subroutine attributes
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44 missing MODIFY_CODE_ATTRIBUTES handlers
02db591 @fglock Perlito5 - update TODO
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45
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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46 -- create __DATA__
5058d24 @fglock Perlito5 - grammar - save __DATA__ sections
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47 %Perlito5::DATA_SECTION contains the __DATA__ for each package
48
ae33743 @fglock Perlito5 - TODO update
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49 -- compile-time eval() is not bound to the "program" environment, but to the "compiler" environment instead
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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50 see README-perlito5-js near "Compile-time / Run-time interleaving"
51
52 my $v;
53 BEGIN { $v = "123" }
54 use Module $v; # $v is not accessible at compile-time
7b982c3 @fglock Perlito5 - update TODO
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55
529225f @fglock Perlito5 - TODO update
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56 -- parse the regexes
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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57 create an AST for regexes
7b982c3 @fglock Perlito5 - update TODO
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58
b32dc90 @fglock Perlito5 - update TODO
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59 -- prototypes (signatures)
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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60 http://perldoc.perl.org/perlsub.html#Prototypes
61
62 check that undeclared barewords give the right error
63 *foo = sub () { ... } # does prototype work here?
64 check signature in sort()
65 fix the prototype for 'stat(*)' (see t/test.pl in the perl test suite)
fde5276 @fglock Perlito5 - update TODO
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66
5f528ed @fglock Perlito5 - parser - more TODO special cases
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67 -- "namespace" parsing
131944d @fglock Perlito5 - TODO update; add more references to documentation and tests
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68 tests: t5/01-perlito/26-syntax-namespace.t
5f528ed @fglock Perlito5 - parser - more TODO special cases
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69
e107c18 @fglock Perlito5 - parser - add "glob variable"
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70 $ perl -e ' { package X; sub print { CORE::print(">$_[1]<\n") } } my $x = bless {}, "X"; print $x "xxx" '
71 Not a GLOB reference at -e line 1.
72
73 $ perl -e ' { package X; sub printx { CORE::print(">$_[1]<\n") } } my $x = bless {}, "X"; printx $x "xxx" '
74 >xxx<
75
76 $ perl -MO=Deparse -e ' print X:: "xxx" '
77 print X 'xxx';
78
79 $ perl -e ' use strict; my $x = X::; print $x '
80 X
81
82 $ perl -e ' use strict; my $x = X; print $x '
83 Bareword "X" not allowed while "strict subs" in use
84
daea592 @fglock Perlito5 - add more "use strict"
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85 $ perl perlito5.pl -MO=Deparse -e ' ::X::x::y '
86 join("", ::{'main::X::'} x main::y);
87
5f528ed @fglock Perlito5 - parser - more TODO special cases
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88 $ perl -MO=Deparse -e ' ::X '
89 '???';
90
91 $ perl -MO=Deparse -e ' sub X {} ::X '
92 sub X { }
93 X;
94
d216d0e @fglock Perlito5 - parser - namespace TODO - more corner cases
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95 $ perl -e ' $::X::::X = 3; print $main::X::::X ' # 3
d69c95a @fglock Perlito5 - parser - namespace TODO - more corner cases
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96 $ perl -e ' $::X::::X = 3; print $main::main::X::::X ' # 3
97 $ perl -e ' $::X::::X = 3; print $main::X::main::X ' # empty
d216d0e @fglock Perlito5 - parser - namespace TODO - more corner cases
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98 $ perl -e ' $::X::::X = 3; print $main::X::X ' # empty
d69c95a @fglock Perlito5 - parser - namespace TODO - more corner cases
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99 $ perl -e ' $::X::::X = 3; print $::::X::::X ' # empty
100
bad489f @fglock Perlito5 - parser - TODO list
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101 -- CORE:: namespace can be used with operators:
102
103 $ perl -MO=Deparse -e ' $x CORE::and $v '
104 $v if $x;
105
106 $ perl -MO=Deparse -e ' @v = CORE::qw/ a b c / '
107 @v = ('a', 'b', 'c');
108
109 $ perl -MO=Deparse -e ' $x CORE::+ $v '
110 CORE:: is not a keyword
111
d216d0e @fglock Perlito5 - parser - namespace TODO - more corner cases
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112
1395266 @fglock Perlito5 - TODO update
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113 -- strict and warnings: create options like 'subs', 'refs'
114
94163c8 @fglock perlito5 - parser - tweak TODO list
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115 -- clean up:
116 the several "end_tables" in Expression.pm are duplicating the function of
117 $Precedence in Precedence.pm - Expression.pm should use $Precedence directly.
2077216 @fglock Perlito5 - add TODO
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118
b33a702 @fglock perlito5 - parser - TODO "things that work in perlito5, but which are…
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119 -- things that work in perlito5, but which are errors in 'perl'
120
30e4683 @fglock Perlito5 - TODO update
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121 $ perl -e ' my @things= map { no warnings; 123 } @list; '
122 "no" not allowed in expression
123
b33a702 @fglock perlito5 - parser - TODO "things that work in perlito5, but which are…
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124 quotes vs. hash lookups:
125
126 $ perl -e ' q}} '
127 # ok
128
129 $ perl -e ' $x{ q}} } '
130 Unmatched right curly bracket at -e line 1, at end of line
131
132 $ perl -e ' $x{ q]] } '
133 # ok
134
135 string interpolation with nested quotes of the same type:
136
137 $ perl -e ' " $x{"x"} " '
138 String found where operator expected at -e line 1, near "x"} ""
139
2cc1933 @fglock Perlito5 - TODO update
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140
95e6b6c @fglock Perlito5 - TODO cleanup
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141 * Add tests for fixed bugs:
142
efea5bc @fglock Perlito5 - TODO update
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143 ---
144 variable declarations in expressions
145
146 our $Verbose ||= 0;
147 our (%Cache);
148 my $args = @_ or @_ = @$exports;
149
95e6b6c @fglock Perlito5 - TODO cleanup
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150
151 ---
152 add additional variants of "for"
153
154 # "our" with localization
155 $ perl -e ' use strict; our $x = 123; for our $x (1,2,3) { 2 } print "$x\n" '
156 123
157
158 # variable in scope with localization
159 $ perl -e ' use strict; my $x = 123; for $x (1,2,3) { 2 } print "$x\n" '123
160 123
161
162
163 ---
164 add "print", "printf", "say" special parsing - note this is related to indirect object notation
165
166 indirect object notation
167 http://lwn.net/Articles/451486/
168 http://www.modernperlbooks.com/mt/2009/08/the-problems-with-indirect-object-notation.html
169 http://shadow.cat/blog/matt-s-trout/indirect-but-still-fatal/
170 http://perlbuzz.com/mechanix/2008/02/the-perils-of-perl-5s-indirect.html
171
172 method Module $param;
173 new Class( arg => $value );
174 new Class::($args);
175 say $config->{output} "This is a diagnostic message!"; # indirect call
176 say {$config->{output}} "This is a diagnostic message!"; # say to filehandle
177
178 use Class;
179 sub Class {
180 warn 'Called Class sub not Class package';
181 'Class'
182 }
183 my $q = Class->new; # calls the Class sub above
184 my $s = new Class; # throws a 'Bareword found where operator expected' error
185 my $t = Class::->new # this works
186 my $u = new Class::; # this also works (even with sub main in the current package)
187
188 sbertrang++ noted this is also valid:
189 print( STDERR "123" )
190
191
192 ---
94163c8 @fglock perlito5 - parser - tweak TODO list
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193 add tests for signatures: "empty" _ $ ;$
194
195 ---
caf3b30 @fglock perlito5 - parser - fix "sub _" should be in package "main"
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196 add test for "sub _" should be in package "main"
197 $ perl -MO=Deparse -e ' package X; sub _ { 123 } '
198 package X;
199 sub main::_ {
200 123;
201 }
202
203 ---
204 add test for defined-or vs. m// (2012/9/25 Конрад Боровски <notifications@github.com>)
205 Note: fixed; see test t5/01-perlito/25-syntax-defined-or.t
206
207 $ perl perlito5.pl -Isrc5/lib -Cast-perl5 -e ' shift // 2 '
208 Number or Bareword found where operator expected
209
210 $ perl perlito5.pl -Isrc5/lib -Cast-perl5 -e ' shift / 2 '
211 Can't find string terminator '/' anywhere before EOF
212
213 ---
214 add test for filetest operators special case:
2cc1933 @fglock Perlito5 - TODO update
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215 ' -f($file).".bak" ' should be equivalent to -f "$file.bak"
216 parses as -(f($file)).".bak"
217 but: ' -f ($file).".bak" '
218 parses correctly
219 This seems to be because there is a rule that \w followed by '(' is a function call;
220 this needs more testing: ' ... and(2) '
dd7a160 @fglock Perlito5 - parser: fix a bug caused by incorrect is_term state
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221 Test: redefine 'and', 'not' and check what works.
2cc1933 @fglock Perlito5 - TODO update
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222
223 ' $s111++ + $s222 '
224 parses as (+$s222)++
225
dd7a160 @fglock Perlito5 - parser: fix a bug caused by incorrect is_term state
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226 ' $step++ < $steps '
227 Can't find string terminator '>' anywhere before EOF
228
2cc1933 @fglock Perlito5 - TODO update
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229
8f67bea @fglock Perlito version 8.0
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230
5bb50dd @fglock Perlito5 - update TODO
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231 * Perl5 backend
399a3d2 @fglock Perlito5 - use scalar() instead of .elems()
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232
7bc739e @fglock Perlito5 - parser - add 'Perlito5::AST::Given'
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233 -- "given" statement not implemented
376e088 @fglock Perlito5 - TODO update
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234 -- "default" statement not implemented
7bc739e @fglock Perlito5 - parser - add 'Perlito5::AST::Given'
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235
66ec858 @fglock Perlito5 - TODO update
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236 -- check that \(@a) and \@a have different meanings
237
529225f @fglock Perlito5 - TODO update
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238 -- ${^NAME} needs curly-escaping
239
85c5759 @fglock Perlito5 - TODO update
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240 - fix regex delimiters, or escape the regexes
241
47374c7 @fglock Perlito5 - perl5: fix bareblock
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242 -- continue block in block: ' { print 1 } continue { print 2 } '
243
7a5d100 @fglock Perlito5 - perl5: document emitter bug (significant parenthesis)
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244 -- emitter bug: significant parenthesis:
245 t5/01-perlito/12-context.t fails because:
246 " return (4, 5) " instead of " return 4, 5 "
247
1d5cf89 @fglock Perlito5 - parser: new module Perlito5::Grammar::Sigil
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248 -- bug: ' $$x [$y] '
249 emits as ${$x}->[$y];
250
0cc64c5 @fglock Perlito5 - kill perl6-ish "method"
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251
8f67bea @fglock Perlito version 8.0
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252 * Javascript backend
253
945df32 @fglock Perlito5 - TODO update
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254 -- 'require 5.006;'
255 # Can't locate 5.006 in @INC
256
efea5bc @fglock Perlito5 - TODO update
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257 -- expressions in 'local'
945df32 @fglock Perlito5 - TODO update
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258 local $SIG{__WARN__};
259
260 -- 'next', 'last' in expression
261 (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next)
262 ... ) and last
263
264 -- 'x' in list context
265 @{$cache}{@$ok} = (1) x @$ok;
21af3dc @fglock Perlito5 - js - TODO update
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266
267 -- '&' prototype
268 add tests; see Try::Tiny
269
270 -- AUTOLOAD() called from UNIVERSAL autovivifies packages
271 add tests
272
30e4683 @fglock Perlito5 - TODO update
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273 -- prototype() can be set by aliasing:
274 *x = sub ($$) { 123 }; *y = *x; print prototype(\&y) # $$
275
66ec858 @fglock Perlito5 - TODO update
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276 -- check that \(@a) and \@a have different meanings
277
09cc8db @fglock Perlito5 - js - add TODO for delete() special case
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278 -- delete() in the middle of an array turns exists() off:
279
280 $ perl -e ' @a = (3..7); delete $a[2]; print "exists ", (exists $a[$_] ? 1 : 0), "\n" for 0 .. $#a '
281 exists 1
282 exists 1
283 exists 0
284 exists 1
285 exists 1
286
3b69c4e @fglock Perlito5 - javascript - add bug: "return" and context inside eval
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287 -- "or" has SCALAR context (Abigail++):
25440bb @fglock Perlito5 - TODO update
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288 See: t5/01-perlito/23-eval.t
3b69c4e @fglock Perlito5 - javascript - add bug: "return" and context inside eval
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289
ecbc8f4 @fglock Perlito5 - TODO update; fix "when"
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290 -- "~~" operator not implemented; See also "when" implementation
291
292 -- "given" statement not implemented
376e088 @fglock Perlito5 - TODO update
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293 -- "when" should use a "break" exception inside "given", and a "next" exception inside "for".
ecbc8f4 @fglock Perlito5 - TODO update; fix "when"
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294 -- "default" statement not implemented
295
db64ad6 @fglock Perlito5 - parser: "C-style" loop
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296 -- bug: some declarations are not "seen":
297 for ( my $i = 0; $i < 10 ; $i++ ) { print "$i\n" } # compiles to global $i
298
bb77986 @fglock Perlito5 - parser: optimize ident() rule
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299 -- bug: don't emit throw() in term position; javascript requires a function() wrapper because throw() is a statement
300
9f9d0dd @fglock Perlito5 - javascript: TODO update
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301 -- javascript errors don't show in the global error handler when running in node.js
7a03ff4 @fglock Perlito5 - javascript: eval-block works
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302
e584da6 @fglock Perlito5 - javascript: TODO update
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303 -- "autoload" the compiler if eval-string is used (eval-string needs the compiler at run-time)
304
529225f @fglock Perlito5 - TODO update
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305 -- symbol variables like $] ${"main::\$"} $#_
306 -- check that @_, $_, $a, $b and other special variables are in the right context (lexical, global, package global)
307
014a584 @fglock Perlito5 - javascript: working @ISA; update Changelog, examples
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308 -- add alternate mro's
85c5759 @fglock Perlito5 - TODO update
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309 -- cache the mro
42a3449 @fglock Perlito5 - TODO update
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310
311 -- add regex compiler
312 -- /e modifier
d2169b7 @fglock Perlito5 - t/test.pl: use cmp_ok()
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313 -- /x modifier
42a3449 @fglock Perlito5 - TODO update
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314 -- support all perl5 regex syntax
529225f @fglock Perlito5 - TODO update
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315 -- @v = /x/g
42a3449 @fglock Perlito5 - TODO update
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316
887219b @fglock Perlito5 - javascript: work around variable redeclaration bug
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317 -- bug: variable redeclaration does not work
318 -- javascript "var" erases the outer value within the whole current lexical scope
42a3449 @fglock Perlito5 - TODO update
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319 -- bug: "my" variables - this doesn't work as expected: my $v = $v
320 possible fix: rename variables
887219b @fglock Perlito5 - javascript: work around variable redeclaration bug
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321
b75827a @fglock Perlito5 - TODO update
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322 -- lvalue ternary: ($a_or_b ? $a : $b) = $c;
323 -- lvalue substr()
324 -- 4-arguments substr()
78fd976 @fglock Perlito5 - javascript: fix 3-arguments substr()
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325 -- pos($str)
b44f592 @fglock Perlito5 - TODO update
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326 -- lvalue chomp(), chop()
78fd976 @fglock Perlito5 - javascript: fix 3-arguments substr()
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327
328 -- missing some types of subroutine signatures
5b56e5b @fglock Perlito5 - change javascript calling convention
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329
8f67bea @fglock Perlito version 8.0
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330 -- bug: variable aliases create copies instead
331
ce36bd0 @fglock Perlito5 - update TODO
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332 -- generate more compact code; maybe use more subroutines instead of inlining;
333 autovivification is probably the most verbose part of the code.
ae7ad72 @fglock Perlito5 - update docs
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334
7b982c3 @fglock Perlito5 - update TODO
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335 -- in the browser: implement "use" with XMLHttpRequest (what are the security implications?)
4b15a00 @fglock Perlito5 - cleanup parenthesis
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336
5bb50dd @fglock Perlito5 - update TODO
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337 -- add symbol tables for scalar, array and hash
1b4e7ee @fglock Perlito5 - TODO update: typeglobs
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338 -- references to typeglobs:
339 $ perl -e ' print ref(\*main) '
340 GLOB
341 -- aliasing between lexicals and globals
342 $ perl -e 'use strict; my $x = 3; *main::z = \$x; print $main::z; '
343 3
5bb50dd @fglock Perlito5 - update TODO
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344
71b0905 @fglock Perlito5 - docs update
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345 -- string increment and string ranges
e09904a @fglock Perlito5 - javascript: infrastructure for string increment
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346 See: p5str_inc()
5b56e5b @fglock Perlito5 - change javascript calling convention
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347
0e5b55f @fglock Perlito5 - update TODO
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348 -- finish "overload" implementation
349
0718f37 @fglock Perlito5 - javascript: TODO update
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350 -- pack(), unpack()
351 -- y()()
352
b343129 @fglock Perlito - TODO update
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353 -- BEGIN{} should execute in the environment of the program under compilation
88914e1 @fglock Perlito5 - TODO update
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354 -- BEGIN/END that are defined inside blocks/closures need to run inside some pseudo-environment
355 even if the closure was never created or used in the first place
b343129 @fglock Perlito - TODO update
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356
b371c5d @fglock Perlito5 - js - AUTOLOAD finished; add tests; workaround for broken b…
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357 -- bug - method call context is disabled, because it breaks bootstrap.
358 in Runtime.pm:
359 function p5call(invocant, method, list, p5want) {
360 list.unshift(invocant);
361 p5want = 0; // TODO BUG - workaround for broken bootstrap
0cc64c5 @fglock Perlito5 - kill perl6-ish "method"
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362
39fbeed @fglock Perlito5 - TODO update
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363 -- bug https://github.com/fglock/Perlito/issues/10
364 "Perlito 5 JS has syntax errors"
365
366 Tried
367
368 YUI Compressor online
369 and
370 Google Closure Compiler
371 http://closure-compiler.appspot.com/home
372
373 Both failed with syntax errors.
374
9643c62 @fglock Perlito5 - TODO update
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375 -- flip-flop operator
376 if either operand to scalar '..' is a constant the value is implicitly compared to the input line number ($.)
377
378 -- unary minus on strings.
379
380 my $_ = "a"
381 print -$_
382 # -a
383
e4182ba @fglock Perlito5 - TODO update
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384 my $foo = '-bar';
385 print $foo;
386 print -$foo;
387 # -bar+bar
388
59477ad @fglock Perlito - TODO update
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389
fb9190c @fglock Perlito5 - TODO update
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390 * Nice to Have
a7ab071 @fglock Perlito5 - add TODO
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391
3c87580 @fglock Perlito - TODO update
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392 -- debugging symbols
393 -- line numbers in error messages
394
8f60cb4 @fglock Perlito5 - TODO update
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395 -- caller()
396 -- "when"
465ee11 @fglock Perlito5 - TODO update
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397
fb9190c @fglock Perlito5 - TODO update
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398 -- run more of the "perl" test suite
0cc64c5 @fglock Perlito5 - kill perl6-ish "method"
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399
71b0905 @fglock Perlito5 - docs update
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400 -- proper "use strict" and "use warnings"
1b2eecc @fglock Perlito5 - use @ARGV instead of @*ARGS
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401 -- use the same error messages and warnings as 'perl'
42a3449 @fglock Perlito5 - TODO update
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402 -- no warnings 'redefine';
1b2eecc @fglock Perlito5 - use @ARGV instead of @*ARGS
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403
ebce10f @fglock Perlito5 - parser: add __END__, __DATA__
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404 -- __LINE__, __FILE__
f4910a7 @fglock Perlito5 - TODO update
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405
b343129 @fglock Perlito - TODO update
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406 -- INIT{}, END{}
407 look at the implementation in perlito6-in-Go
f4910a7 @fglock Perlito5 - TODO update
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408
4b15a00 @fglock Perlito5 - cleanup parenthesis
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409 -- source code - remove Perl 6 code such as "token"
71b0905 @fglock Perlito5 - docs update
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410 (fixed: This is only loaded if the grammar compiler is needed)
4b15a00 @fglock Perlito5 - cleanup parenthesis
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411
61d64aa @fglock Perlito5 - parser: rewrite operator() in "perl5-land" for later tweaking
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412 -- *{ $name }{CODE}->();
413
414 -- local(*{$caller."::a"}) = \my $a;
6217752 @fglock Perlito5 - docs update
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415 -- *{$pkg . "::foo"} = \&bar;
61d64aa @fglock Perlito5 - parser: rewrite operator() in "perl5-land" for later tweaking
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416
417
9643c62 @fglock Perlito5 - TODO update
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418 * Oddities
419
420 -- from moritz, Schwern and others at
421 http://stackoverflow.com/questions/161872/hidden-features-of-perl
422
423 - you can give subs numeric names if you use symbolic references
424
425 $ perl -lwe '*4 = sub { print "yes" }; 4->()'
426 yes
427
428 - you can use letters as delimiters
429
430 $ perl -Mstrict -wle 'print q bJet another perl hacker.b'
431 Jet another perl hacker.
432
433 Likewise you can write regular expressions:
434
435 m xabcx
436 # same as m/abc/
437
438 The "desperation mode" of Perl's loop control constructs which causes them to look up the stack to find a matching label allows some curious behaviors which Test::More takes advantage of, for better or worse.
439
440 SKIP: {
441 skip() if $something;
442
443 print "Never printed";
444 }
445
446 sub skip {
447 no warnings "exiting";
448 last SKIP;
449 }
450
d6cad9b @fglock Perlito5 - TODO update
authored
451
452 * Deprecate
453
454 -- remove unused features from src5/lib/Perlito5/Grammar/Regex.pm
455
456 -- Interpreter backend
457 this is not being maintained; the code is still in src5/lib/Perlito5/Eval.pm just in case
458
459 -- Perl6 backend (started)
460 this is not being maintained; not sure if compiling to Perl6 is the best way
461 maybe compiling directly to Parrot/dotnet/Haskell gives better results
462
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