I've been waw-wawing the small project I'm using to learn about Perl 6
grammars. The following is a pared down version of what seems one of the
better approaches: replacing the default array with a hash.
Can the parse tree be constructed so as to eliminate the actions class?
Can this be made simpler? (I'm prone to feel I may miss some syntax.)
grammar H {
rule TOP {^ <pairs> $}
rule pairs { <pair>[ <pair>]* }
rule pair { <key>':'<mash> }
token key { \w+ }
token mash { \w+ }
}
class H::Actions {
method TOP($/) {
my %h;
for $/<pairs><pair> -> $p {
%h{$p<key>} = $p<mash>;
}
make %h;
}
method pairs($/){ make $/ }
}
my $data = " TOP:most skeleton:door "
~ "password:host belief:trust key:mash ";
my $m = H.parse( $data, :actions( H::Actions ) );
die unless $m;
for $m.ast.kv -> $k, $v {
say $k, " -> ", $v;
}
my %export_me = $m.ast;
Be well, rir
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