# Directives
# ( none)
# Start-up Actions
{
	my $subpartCount = 0;
	my $partCount    = 0;
}

# 
# Atoms
TEXT:		/^"TEXT"|^TEXT/i 	{ $return = "TEXT" }
PLAIN:		/^"PLAIN"|^PLAIN/i 	{ $return = "PLAIN" }
HTML:		/"HTML"|HTML/i 		{ $return = "HTML" }
MESSAGE:	/^"MESSAGE"|^MESSAGE/i 	{ $return = "MESSAGE" 	}
RFC822:		/^"RFC822"|^RFC822/i  	{ $return = "RFC822" 	}
NIL:		/^NIL/i			{ $return = "NIL" 	}
NUMBER:		/^(\d+)/		{ $return = $item[1]; $return||defined($return);}

# 	Strings:

SINGLE_QUOTED_STRING: "'" /(?:\\'|[^'])*/ "'" {

	$return = $item{__PATTERN1__} ;
	$return||defined($return);
}

DOUBLE_QUOTED_STRING: '"' /(?:\\"|[^"])*/ '"' {

	 $return = $item{__PATTERN1__} ;
	 $return||defined($return);
}

QUOTED_STRING: DOUBLE_QUOTED_STRING | SINGLE_QUOTED_STRING {

	 $return = $item{DOUBLE_QUOTED_STRING}||$item{SINGLE_QUOTED_STRING} ;
	 $return||defined($return);
}

BARESTRING: ...!/^[)('"]/	/^(?!\(|\))(?:\\ |\S)+/	{ 
	$return = $item{__PATTERN1__} ; $return||defined($return);
}

STRING:	QUOTED_STRING | BARESTRING {
	 $return = $item{QUOTED_STRING}||$item{BARESTRING} ;
	 $return||defined($return);
}

OLDSTRING:         /^"((?:[^"\\]|\\.)*)"/ | /^([^ \(\)]+)/ 
                        {       $item{__PATTERN1__} =~ s/^"(.*)"$/$1/;
                                $return = $item{__PATTERN1__} || $item{__PATTERN2__} ;
                                $return||defined($return);
                        }

#BARESTRING:	/^[^(]+\s+(?=\()/	
#		{ $return = $item[1] ; $return||defined($return);}

textlines:	NIL | NUMBER	{ $return = $item[1] || $item[2]; $return||defined($return); }
rfc822message:  MESSAGE RFC822 	{ $return = "MESSAGE RFC822" }
key:		STRING		{ $return = $item{STRING} ; $return||defined($return);}
value:		NIL |  '(' <commit> kvpair(s) ')'| NUMBER | STRING 
		{ 	$return = $item{NIL} 		|| 
			$item{NUMBER} 			|| 
			$item{STRING} 			|| 
			{ map { (%$_) } @{$item{kvpair}} } ;
			$return||defined($return);
		}
kvpair:		...!")" key value 	
		{ $return = { $item{key} => $item{value} }; $return||defined($return);}
bodytype:	STRING		
		{ $return = $item{STRING} ; $return||defined($return);}
bodysubtype:	PLAIN | HTML | NIL | STRING	
		{ $return = $item{PLAIN}||$item{HTML}||$item{NIL}||$item{STRING} ; 
		  $return||defined($return);
		}
bodyparms:	NIL |  '(' kvpair(s) ')' 		
		{
                          $return = $item{NIL} || 
                                    { map { (%$_) } @{$item{kvpair}} };
                          $return || defined($return); 
                        }
bodydisp:	NIL |  '(' kvpair(s) ')'		
		{
                          $return = $item{NIL} || 
                                    { map { (%$_) } @{$item{kvpair}} };
                          $return || defined($return); 
                        }
bodyid:		...!/[()]/ NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ; $return||defined($return);}
bodydesc:	...!/[()]/ NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ; $return||defined($return);}
bodyenc:	NIL | STRING |  '(' kvpair(s) ')'
	{
		$return = $item{NIL} 		|| 
			  $item{STRING} 	||
			  { map { (%$_) } @{$item{kvpair}} };
		$return||defined($return);
	}
bodysize:	...!/[()]/ NIL | NUMBER		
		{ $return = $item{NIL} || $item{NUMBER} ;$return||defined($return);}

bodyMD5:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
bodylang:	NIL | STRING | "(" STRING(s) ")"
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
personalname:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
sourceroute:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
mailboxname:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
hostname:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}
addressstruct: "(" personalname sourceroute mailboxname hostname ")"
		{ $return = {
			personalname => $item{personalname} ,	
			sourceroute  => $item{sourceroute} ,	
			mailboxname  => $item{mailboxname} ,	
			hostname     => $item{hostname} ,	
		  } ;
		  bless($return, "Mail::IMAPClient::BodyStructure::Address");
		}
subject:	NIL | STRING 
		{ 
			$return = $item{NIL} || $item{STRING} ;
			$return||defined($return);
		}
inreplyto:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}

messageid:	NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}

date:		NIL | STRING		
		{ $return = $item{NIL} || $item{STRING} ;$return||defined($return);}

cc:		NIL | "(" addressstruct(s) ")" 		
		{ $return = $item{NIL} || $item{addressstruct} }

bcc:		NIL | "(" addressstruct(s) ")" 		
		{ $return = $item{NIL} || $item{addressstruct} }

from:		NIL | "(" addressstruct(s) ")"		
		{ $return = $item{NIL} || $item{addressstruct} }

replyto:	NIL | "(" addressstruct(s) ")"		
		{ $return = $item{NIL} || $item{addressstruct} }

sender:		NIL | "(" addressstruct(s) ")"		
		{ $return = $item{NIL} || $item{addressstruct} }

to:		NIL | "(" addressstruct(s) ")"		
		{ $return = $item{NIL} || $item{addressstruct} }

envelopestruct:	"(" date subject from sender replyto to cc bcc inreplyto messageid ")" 
	{ $return = {}; 
	  foreach my $what (qw/date subject from sender replyto to cc bcc inreplyto messageid/) {
		$return->{$what} = $item{$what};
	  }
	  bless $return, "Mail::IMAPClient::BodyStructure::Envelope";
	  $return||defined($return);
	}

basicfields: 	bodysubtype bodyparms bodyid(?) 
		bodydesc(?) bodyenc(?) 
		bodysize(?) 			{ 

	$return = { 
		bodysubtype 	=> 	    $item{bodysubtype} ,

		bodyparms 	=> 	    $item{bodyparms} ,

		bodyid 		=> (ref     $item{bodyid}	?
					    $item{bodyid}[0]	:
					    $item{bodyid} ),

		bodydesc 	=> (ref     $item{bodydesc}	?
					    $item{bodydesc}[0]	:
					    $item{bodydesc} ),

		bodyenc 	=> (ref     $item{bodyenc}	?
					    $item{bodyenc}[0]	:
					    $item{bodyenc} ),

		bodysize 	=> (ref     $item{bodysize}	?
					    $item{bodysize}[0]	:
					    $item{bodysize} ),
	};
	$return;
}

textmessage: 	TEXT <commit> basicfields textlines(?) bodyMD5(?) bodydisp(?) bodylang(?) 
	{ 
	  $return = $item{basicfields}||{};
	  $return->{bodytype} = 'TEXT';
	  foreach my $what (qw/textlines bodyMD5 bodydisp bodylang/) {
		ref($item{$what}) and $return->{$what} = $item{$what}[0];
	  }
	  $return||defined($return);
        }

othertypemessage: bodytype basicfields bodyparms(?) bodydisp(?) bodylang(?)
	{ $return = {}; 
	  foreach my $what (qw/bodytype bodyparms bodydisp bodylang/) {
		$return->{$what} = ref($item{$what})? $item{$what}[0] : $item{$what} ;
	  }
	  while ( my($k,$v) = each %{$item{basicfields}} ) { $return->{$k} = $v }
	  $return||defined($return);
	}

messagerfc822message: 
		rfc822message <commit> bodyparms bodyid bodydesc bodyenc bodysize 
		envelopestruct bodystructure textlines
		bodyMD5(?) bodydisp(?) bodylang(?) 
	{ 
	  $return = {}; 
	  foreach my $what (qw/	bodyparms bodyid bodydesc bodyenc bodysize 
				envelopestruct bodystructure textlines
				bodyMD5 bodydisp bodylang
	  		     /
	  ) {
                $return->{$what} = ref $item{$what} =~ 'ARRAY'?
                                        $item{$what}[0] : $item{$what};
        }
        while ( my($k,$v) = each %{$item{bodystructure}[0]} ) { $return->{$k} = $v }
        while ( my($k,$v) = each %{$item{basicfields}}   ) { $return->{$k} = $v }
	$return->{bodytype} 	= "MESSAGE" ; 
	$return->{bodysubtype}= "RFC822" ;
	$return||defined($return);
	}

subpart:	"(" part ")"  	
	{ 
		$return = $item{part} ; 
		$return||defined($return);
	}	<defer: ++$subpartCount;>


part:		subpart(s) <commit> basicfields 
			bodyparms(?) bodydisp(?) bodylang(?) 	
			<defer: $subpartCount = 0>
	{
		$return = bless($item{basicfields}, "Mail::IMAPClient::BodyStructure");
		$return->{bodytype} = "MULTIPART";
		$return->{bodystructure} = $item{subpart};
		foreach my $b (qw/bodyparms bodydisp bodylang/) { 
			$return->{$b} = ref($item{$b}) ? $item{$b}[0] : $item{$b};
		}
		$return||defined($return) ;
	}
		| 	textmessage 
	{
		$return = bless $item{textmessage}, "Mail::IMAPClient::BodyStructure";
		$return||defined($return);
	}
		| 	messagerfc822message
	{
		$return = bless $item{messagerfc822message}, "Mail::IMAPClient::BodyStructure";
		$return||defined($return);
	}
		| 	othertypemessage
	{
		$return = bless $item{othertypemessage}, "Mail::IMAPClient::BodyStructure";
		$return||defined($return);
	}

bodystructure: 	 "(" part(s) ")"
		{
			$return = $item{part} ;
			$return||defined($return);
		}

start:		/.*\(.*BODYSTRUCTURE \(/i part(1)  /\).*\)\r?\n?/
		{
			$return = $item{part}[0] ;				
			$return||defined($return);
		}

envelope:	/.*\(.*ENVELOPE/ envelopestruct /.*\)/ {
		$return = $item{envelopestruct} ;
		$return||defined($return) ;
		}