Configure updates for intsize and ssizetype

[perl5.git] / Todo

diff --git a/Todo b/Todo
old mode 100755 (executable)
new mode 100644 (file)
index 86e2b17..114a488
--- a/Todo
+++ b/Todo
@@ -1,18 +1,68 @@
-Set KEEP on constant split
-Optimize foreach on array.
-Execute all BEGINs and ENDs.
-Make a good way to determine if *.pl is being executed directly.
-Make specialized allocators.
-Optimize switches.
-Do debugger
-Cache eval tree
-Implement eval once
-Cache m//g state
-rcatmaybe
-Fix length($&)
-eval {} coredump
+Tie Modules
+       VecArray                Implement array using vec()
+       SubstrArray             Implement array using substr()
+       VirtualArray            Implement array using a file
+       ShiftSplice             Defines shift et al in terms of splice method
+
+Would be nice to have
+       Profiler
+       pack "(stuff)*"
+       Contiguous bitfields in pack/unpack
+       lexperl
+       Bundled perl preprocessor
+       Use posix calls internally where possible
+       const variables
+       gettimeofday
+       bytecompiler
+       format BOTTOM
+       $obj->can("method") to probe method inheritance
+       -iprefix.
+       -i rename file only when successfully changed
+       All ARGV input should act like <>
+       Multiple levels of warning
+       report HANDLE [formats].
+       tie(FILEHANDLE, ...)
+       __DATA__
+       support in perlmain to rerun debugger
+       make 'r' print return value like gdb 'fini'
+       regression tests using __WARN__ and __DIE__ hooks
+
+Possible pragmas
+       debugger
+       optimize (use less memory, CPU)
+
+Optimizations
+       constant function cache
+       switch structures
+       eval qw() at compile time
+       foreach (1..1000000)
+       foreach(reverse...)
+       Set KEEP on constant split
+       Cache eval tree (unless lexical outer scope used (mark in &compiling?))
+       rcatmaybe
+       Shrink opcode tables via multiple implementations selected in peep
+       Cache hash value?  (Not a win, according to Guido)
+       Optimize away @_ where possible
+       sfio?
+       "one pass" global destruction
+       Optimize sort by { $a <=> $b }
+       Rewrite regexp parser for better integrated optimization
+
+Vague possibilities
+       ref function in list context
+       Populate %SIG at startup if appropriate
+       data prettyprint function?  (or is it, as I suspect, a lib routine?)
+       make tr/// return histogram in list context?
+       undef wantarray in void context
+       Loop control on do{} et al
+       Explicit switch statements
+       perl to C translator
+       multi-thread scheduling
+       built-in globbing
+       compile to real threaded code
+       structured types
+       paren counting in tokener to queue remote expectations
+       autocroak?
+       Modifiable $1 et al
+       substr EXPR,OFFSET,LENGTH,STRING
 
-make tr/// return histogram in list context?
-Do anything with "hint"?
-When does split() go to @_?
-undef wantarray in void context?