From 0daa494480f7abe37a6e593c6238811009b7b914 Mon Sep 17 00:00:00 2001
From: Zoffix Znet <cpan@zoffix.com>
Date: Fri, 3 Jun 2016 07:01:14 -0400
Subject: Start rewrite

---
 lib/IRC/Client/Grammar.pm6         | 21 +++++++++++++++++++++
 lib/IRC/Client/Grammar/Actions.pm6 | 31 +++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 lib/IRC/Client/Grammar.pm6
 create mode 100644 lib/IRC/Client/Grammar/Actions.pm6

(limited to 'lib/IRC/Client')

diff --git a/lib/IRC/Client/Grammar.pm6 b/lib/IRC/Client/Grammar.pm6
new file mode 100644
index 0000000..255528a
--- /dev/null
+++ b/lib/IRC/Client/Grammar.pm6
@@ -0,0 +1,21 @@
+unit grammar IRC::Client::Grammar;
+token TOP { <message>+ <leftovers> }
+token leftovers { \N* }
+token SPACE { ' '+ }
+token message { [':' <prefix> <SPACE> ]? <command> <params> \n }
+    token prefix  {
+        [ <servername> || <nick> ['!' <user>]? ['@' <host>]? ]
+        <before <SPACE>>
+    }
+        token servername { <host> }
+        token nick { <letter> [ <letter> | <number> | <special> ]* }
+        token user { <-[\ \x0\r\n]>+?  <before [<SPACE> | '@']>}
+        token host { <-[\s!@]>+ }
+    token command { <letter>+ | <number>**3 }
+    token params { <SPACE>* [ ':' <trailing> | <middle> <params> ]? }
+        token middle { <-[:\ \x0\r\n]> <-[\ \x0\r\n]>* }
+        token trailing { <-[\x0\r\n]>* }
+
+    token letter { <[a..zA..Z]> }
+    token number { <[0..9]> }
+    token special { <[-_\[\]\\`^{}]> }
diff --git a/lib/IRC/Client/Grammar/Actions.pm6 b/lib/IRC/Client/Grammar/Actions.pm6
new file mode 100644
index 0000000..74ae4e8
--- /dev/null
+++ b/lib/IRC/Client/Grammar/Actions.pm6
@@ -0,0 +1,31 @@
+unit class IRC::Client::Grammar::Actions;
+
+method TOP ($/) { $/.make: ($<message>».made, $<left-overs>) }
+method left-overs ($/) {
+    $/.made: $/.defined ?? !$/ !! '';
+}
+
+method message ($/) {
+    my $pref = $/<prefix>;
+    my %args = command => ~$/<command>;
+    for qw/nick user host/ {
+        $pref{$_}.defined or next;
+        %args<who>{$_} = $pref{$_}.Str;
+    }
+    %args<who><host> = ~$pref<servername> if $pref<servername>.defined;
+
+    my $p = $/<params>;
+
+    for ^100 { # bail out after 100 iterations; we're stuck
+        if ( $p<middle>.defined ) {
+            %args<params>.append: ~$p<middle>;
+        }
+        if ( $p<trailing>.defined ) {
+            %args<params>.append: ~$p<trailing>;
+            last;
+        }
+        $p = $p<params>;
+    }
+
+    $/.make: %args;
+}
-- 
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