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lib/AC/MrGamoo/Submit/Compile.pm  view on Meta::CPAN

    map		=> { tag => 'block',   multi => 0, required => 1, },
    reduce	=> { tag => 'block',   multi => 1, required => 1, },
    final	=> { tag => 'block',   multi => 0, },
    readinput	=> { tag => 'block',   multi => 0, },
    filefilter	=> { tag => 'block',   multi => 0, },
    );

my %BLOCK = (
    init	=> 'simple',
    cleanup	=> 'simple',
    attr	=> 'config',
   );

sub new {
    my $class = shift;

    my $me = bless {
        @_,
        # file | text
    }, $class;

    if( $me->{file} ){
        open(my $fd, $me->{file}) || $me->_die("cannot open file: $!");
        local $/ = undef;
        $me->{text} = <$fd>;
        close $fd;
    }
    $me->{lines} = [ split /^/m, $me->{text} ];

    $me->_compile();
    $me->_check();

    return $me;
}

sub compile {
    my $me   = shift;
    my $name = shift;
    my $num  = shift;

    my $b = $me->{content}{$name};
    return unless $b;
    $b = $b->[$num] if defined($num) && ref($b);

    return $b->compile( $me->{content}{common} );
}

sub src {
    my $me = shift;
    return $me->{_file_content};
}

sub get_code {
    my $me   = shift;
    my $name = shift;
    my $num  = shift;

    my $prog = $me->compile( $name, $num );
    return unless $prog;

    my $c = eval $prog;
    die $@ if $@;

    return $c;
}

sub _die {
    my $me  = shift;
    my $err = shift;

    if( $me->{_lineno} ){
        die "ERROR: $err\nfile: $me->{file} line: $me->{_lineno}\n$me->{_line}\n";
    }
    die "ERROR: $err\nfile: $me->{file}\n";
}

sub _next {
    my $me = shift;

    return unless @{ $me->{lines} };
    $me->{_line} = shift @{ $me->{lines} };
    $me->{_lineno} ++;
    $me->{_file_content} .= $me->{_line};
    return $me->{_line};
}

sub _compile {
    my $me = shift;

    while(1){
        my $line = $me->_next();
        last unless defined $line;
        chomp $line;

        # white, comment, or start
        $line =~ s/^%#.*//;
        $line =~ s/#.*//;
        next if $line =~ /^\s*$/;

        my($tag) = $line =~ m|^<%(.*)>\s*$|;
        my $d    = $COMPILE{$tag};

        if( $d->{tag} eq 'block'){
            $me->_add_block($tag, $me->_compile_block($tag));
        }
        elsif( $d->{tag} eq 'simple' ){
            $me->_add_block($tag, $me->_compile_block_simple($tag));
        }
        elsif( $d->{tag} eq 'config' ){
            $me->_add_config($tag, $me->_compile_config($tag));
        }
        else{
            $me->_die("syntax error");
        }
    }

    delete $me->{_lineno};
    delete $me->{_line};
    delete $me->{_fd};

    1;