class lolcode::Grammar::Actions;

method TOP($/) { my $block := $( $<block> ); my $it := PAST::Var.new( :name( 'IT' ), :scope('lexical'), :viviself('Undef'), :isdecl(1)); $block.unshift($it); make $block; }

method statement ($/, $key) { if (($key eq 'expression')&&($<expression><tokens>[0]<identifier> ne 'VISIBLE')) { my $it := PAST::Var.new( :name( 'IT' ), :scope('lexical'), :viviself('Undef')); my $past := PAST::Op.new( :pasttype('bind'), :node( $/ ) ); $past.push( $it ); $past.push( $( $<expression> ) ); make $past; } else { make $( $/{$key} ); # For now } }

method declare($/) { if ($<expression>) { $($<variable>).isdecl(1); # XXX Someone clever needs to refactor this into assign my $past := PAST::Op.new( :pasttype('bind'), :node( $/ ) ); $past.push( $( $<variable> ) ); $past.push( $( $<expression>[0] ) ); make $past; } else { make $( $<variable> ); } }

method assign($/) { my $past := PAST::Op.new( :pasttype('bind'), :node( $/ ) ); $past.push( $( $<variable> ) ); $past.push( $( $<expression> ) ); make $past; }

method function($/) { my $block := $( $<block> ); $block.blocktype('declaration');

    my $arglist;
    $arglist := PAST::Stmts.new();
    # if there are any parameters, get the PAST for each of them and
    # adjust the scope to parameter.
    $block.arity(0);
    for $<parameters> {
        #my $param := $($_);
        #$param.scope('parameter');
        my $param := PAST::Var.new(:name(~$_<identifier>), :scope('parameter'), :node($($_)));
        $param.isdecl(1);
        $arglist.push($param);
        $block.arity($block.arity() + 1);
    }


    my $it := PAST::Var.new( :name( 'IT' ), :scope('lexical'), :viviself('Undef'), :isdecl(1));
    $block[0].unshift($it);

    $it := PAST::Var.new( :name( 'IT' ), :scope('lexical'));
    $block[0].push($it);

    if $<parameters> { $block.unshift($arglist); }

    $block.name(~$<variable><identifier>);
    make $block;
    #my $past := PAST::Op.new( :pasttype('bind'), :node( $/ ) );
    #$($<variable>).isdecl(1);
    #$past.push( $( $<variable> ) );
    #$past.push( $block );
    #make $past;
}

method ifthen($/) { my $count := +$<expression> - 1; my $expr := $( $<expression>[$count] ); my $then := $( $<block>[$count] ); $then.blocktype('immediate'); my $past := PAST::Op.new( $expr, $then, :pasttype('if'), :node( $/ ) ); if ( $<else> ) { my $else := $( $<else>[0] ); $else.blocktype('immediate'); $past.push( $else ); } while ($count != 0) { $count := $count - 1; $expr := $( $<expression>[$count] ); $then := $( $<block>[$count] ); $then.blocktype('immediate'); $past := PAST::Op.new( $expr, $then, $past, :pasttype('if'), :node( $/ ) ); } $expr := $past.shift(); my $it := PAST::Var.new( :name( 'IT' ), :scope('lexical'), :viviself('Undef')); my $bind := PAST::Op.new( :pasttype('bind'), :node( $/ ) ); $bind.push( $it ); $bind.push( $expr ); $past.unshift( $it ); my $past := PAST::Stmts.new( $bind, $past, :node( $/ ) ); make $past; }

method block($/) { my $past := PAST::Block.new( :blocktype('declaration'), :node( $/ ) ); my $stmts := PAST::Stmts.new( :node( $/ ) ); for $<statement> { $stmts.push( $( $_ ) ); } $past.push($stmts); make $past; }

method value($/, $key) { make $( $/{$key} ); }

method bang($/) { make PAST::Val.new( :value( ~$/ ), :returns('String'), :node($/) ); }

method expression($/) { my $past := PAST::Op.new( :name('expr_parse'), :pasttype('call'), :node( $/ ) ); for $<tokens> { if($_<identifier>) { my $inline := '%r = find_name "' ~ $_<identifier> ~ '"'; $past.push(PAST::Op.new( :inline($inline) )); } elsif($_ eq "MKAY"){ my $inline := '%r = find_name "MKAY"'; $past.push(PAST::Op.new( :inline($inline) )); } else { $past.push( $( $_ ) ); } } make $past; }

method integer($/) { make PAST::Val.new( :value( ~$/ ), :returns('Integer'), :node($/) ); }

method float($/) { make PAST::Val.new( :value( ~$/ ), :returns('Float'), :node($/) ); }

method boolean($/) { if (~$/ eq 'FAIL' ) { make PAST::Val.new( :value( 0 ), :returns('Boolean'), :node($/) ); } else { make PAST::Val.new( :value( 1 ), :returns('Boolean'), :node($/) ); } }

method quote($/) { make PAST::Val.new( :value( $($<yarn_literal>) ), :node($/) ); }

method variable ($/) { if ($<identifier> eq 'IT') { make PAST::Var.new( :name( 'IT' ), :scope('lexical'), :viviself('Undef')); } else { make PAST::Var.new( :name( $<identifier> ), :scope('lexical'), :viviself('Undef'), :node( $/ ) ); } }

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