Mercurial > octave
view build-aux/inplace_edit.pl @ 32047:e3de59065cf1
inputParser.m: Re-architect internal data structures for 60% speed improvement.
Key idea is to replace Parameter and Switch structs with name field containing
a nested struct (def, val fields) with a struct array that has fields "name",
"def", and "val". This makes it possible to eliminate for loops.
* NEWS.9.md: Announce performance improvement.
* inputParser.m: Declare "Parameter" and "Switch" properties as struct arrays.
Add new private property "last_idx" which caches the last Parameter or Switch
lookup.
* inputParser.m (addRequired): Adjust input validation to use numel() now
rather than numfields().
* inputParser.m (addOptional): Adjust input validation to use numel() now
rather than numfields().
* inputParser.m (addParameter): Change code to add new Parameter to a struct
array.
* inputParser.m (addSwitch): Change code to add new Switch to a struct
array.
* inputParser.m (parse): Adjust initialization of internal variables
ParameterNames and SwitchNames to match new data structure.
Use last_idx to simplify call to validate_arg() for Parameters.
* inputParser.m (validate_arg): Move creation of error message
to code path when error has been found---No need to do it for every
function call. Don't capture "exception" variable in try/catch as
it is no longer used.
* inputParser.m (is_argname): Cache "last_idx" if match was found.
* inputParser.m (add_missing): Replace call to setdiff() with in-place
code which can take advantage of implicit knowledge to eliminate calls
to unique and input validation. Replace for loop with cell2struct/struct2cell
combination.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 21 Apr 2023 11:01:40 -0700 |
parents | 8b548f2f8086 |
children |
line wrap: on
line source
#!/usr/bin/perl -w ################################################################################ ## File: inplace_edit.pl ## Usage: perl inplace_edit.pl 'PERL_CODE' file1 [file2] [...] ## Purpose: Run snippet of PERL_CODE on each line in a file and replace ## existing line with the results of running the code. ## This replaces perl -i -pe 'PERL_CODE' file1 [file2] ... ## due to a problem in Perl 5.28 which restricts the number of files ################################################################################ ## Create Perl code from first argument (-e CODE) eval "sub per_line_code { $ARGV[0]; }"; shift @ARGV; ## Loop over each file foreach $fname (@ARGV) { rename ($fname, "$fname.$$") or die "Rename failed:$fname:$!"; open (my $FHI, "<", "$fname.$$") or die "Open failed:$fname.$$:$!"; open (my $FHO, ">", "$fname") or die "Open failed:$fname:$!"; ## Loop over each line while (<$FHI>) { per_line_code (); print $FHO $_; } close ($FHI); close ($FHO); unlink "$fname.$$" or die "Delete failed:$fname.$$:$!"; }