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head

code

root

para

L<Examples| file:../examples/index.podlite>


L<Download |file:../download/index.podlite>


React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


HEADER

FOOTER

README

my %timing;

my class ProfiledGrammarHOW is Metamodel::GrammarHOW {
    method find_method($obj, $name) {
        my $meth := callsame;
        return $meth if $meth.^name eq 'NQPRoutine' || $meth !~~ Any || $meth !~~ Regex;
        substr($name, 0, 1) eq '!' ||
        substr($name, 0, 8) eq 'dispatch' || 
        $name eq any(« parse CREATE Bool defined MATCH Stringy Str WHERE orig BUILD DESTROY »)
          ?? $meth
          !! -> $c, |args {
                my str $grammar = $c.^name;
                my %rules := %timing{$grammar} // (%timing{$grammar} := Hash.new);
                my str $rule = $meth.name;
                my %t := %rules{$rule} // (%rules{$rule} := Hash.new);

                use nqp;
                my int $start = nqp::time();
                my $result := $meth($c, |args);
                %t<time> += (nqp::time() - $start) / 1_000_000_000;  # nsecs -> secs
                ++%t<calls>;
                $result
            }
    }

    method publish_method_cache($obj) {
        # no caching, so we always hit find_method
    }
}

proto sub get-timing(|) is export { * }
multi sub get-timing() { %timing }
multi sub get-timing(Any:U $grammar) {
    %timing{$grammar.^name}
}
multi sub get-timing(Any:U $grammar, Any:U $rule) {
    %timing{$grammar.^name}{$rule.^name}
}
multi sub get-timing(Any:U $grammar, Str:D $rule) {
    %timing{$grammar.^name}{$rule}
}
multi sub get-timing(Str:D $grammar) {
    %timing{$grammar}
}
multi sub get-timing(Str:D $grammar, Str:D $rule) {
    %timing{$grammar}{$rule}
}

proto sub reset-timing(|) is export { * }
multi sub reset-timing(--> Empty) { %timing = () }
multi sub reset-timing(Any:U $grammar --> Empty) {
    %timing{$grammar.^name}:delete
}
multi sub reset-timing(Any:U $grammar, Any:U $rule --> Empty) {
    %timing{$grammar.^name}{$rule.^name}:delete
}
multi sub reset-timing(Any:U $grammar, Str:D $rule --> Empty) {
    %timing{$grammar.^name}{$rule}:delete
}
multi sub reset-timing(Str:D $grammar --> Empty) {
    %timing{$grammar}:delete
}
multi sub reset-timing(Str:D $grammar, Str:D $rule --> Empty) {
    %timing{$grammar}{$rule}:delete
}

my module EXPORTHOW { }
EXPORTHOW.WHO.<grammar> = ProfiledGrammarHOW;



Grammar::Profiler::Simple - Simple rule profiling for Raku grammars


=begin code :lang<raku>

use Grammar::Profiler::Simple;

my grammar MyGrammar {
    rule MyRule {
        ...
    }
}

reset-timing;
MyGrammar.new.parse($string);

say "MyRule was called &get-timing(MyGrammar,MyRule)<calls> times";
say "The total time executing MyRule was &get-timing(MyGrammar,MyRule)<time> seconds";

=end code


This module provides a simple profiler for Raku grammars. To enable
profiling simply add


=begin code :lang<raku>

use Grammar::Profiler::Simple;

=end code


to your code. Any grammar in the lexical scope of the C<use> statement
will automatically have profiling information collected when the
grammar is used.


There are 2 bits of timing information collected:  the number of times
each rule was called and the cumulative time that was spent executing
each rule.  For example:


say "MyRule was called &get-timing(MyGrammar,MyRule)<calls>} times";
say "The total time executing MyRule was &get-timing(MyGrammar,MyRule)<time>} seconds";


Reset all time information collected since the start of the program or
since the last call to C<reset-timing> for all grammars, or for the
specified grammar only (and all its rules), or for the specified
grammar and rule only.


=begin code :lang<raku>

reset-timing;                     # all grammars and rules

reset-timing(MyGrammar);          # MyGrammar only

reset-timing(MyGrammar, MyRule);  # MyRule in MyGrammar only

=end code


Either returns all time information collected since the start of the
program or since the last call to C<reset-timing> for all grammars,
or for the specified grammar only (and all its rules), or for the
specified grammar and rule only.  What is returned is always a C<Hash>.


=begin code :lang<raku>

my %t := reset-timing;                       # %<grammar><rules><calls|time>

my %tg := reset-timing(MyGrammar);           # %<rules><calls|time>

my %tgr := reset-timing(MyGrammar, MyRule);  # %<calls|time>

=end code


This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.


Simple

Html

The Raku Knowledge Base


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


=begin React :component<CookieConsent> :id<CookieConsent> :buttonCaption("Got it!")
=para
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=end React


README

Grammar::Message, a Raku module to make grammar and regex messages prettier

Installing

Running

See also

License

Grammar::Message v0.0.2

Authors

License

Dependencies

Test Dependencies

Provides

Documentation