4 use Sub::Exporter -setup => {
5 exports => [qw(eval_closure)],
6 groups => { default => [qw(eval_closure)] },
11 use Scalar::Util qw(reftype);
17 $args{source} = _canonicalize_source($args{source});
18 _validate_env($args{environment} ||= {});
20 my ($code, $e) = _clean_eval_closure(@args{qw(source environment name)});
22 croak("Failed to compile source: $e\n\nsource:\n$args{source}")
28 sub _canonicalize_source {
31 if (defined($source)) {
33 if (reftype($source) eq 'ARRAY'
34 || overload::Method($source, '@{}')) {
35 return join "\n", @$source;
37 elsif (overload::Method($source, '""')) {
41 croak("The 'source' parameter to eval_closure must be a "
42 . "string or array reference");
50 croak("The 'source' parameter to eval_closure is required");
57 croak("The 'environment' parameter must be a hashref")
58 unless reftype($env) eq 'HASH';
60 for my $var (keys %$env) {
61 croak("Environment key '$var' should start with \@, \%, or \$")
62 unless $var =~ /^([\@\%\$])/;
63 croak("Environment values must be references, not $env->{$var}")
64 unless ref($env->{$var});
68 sub _clean_eval_closure {
69 # my ($source, $__captures, $name) = @_
70 my $__captures = $_[1];
75 if ($ENV{EVAL_CLOSURE_PRINT_SOURCE}) {
76 _dump_source(_make_source(@_), $_[2]);
79 my $code = eval _make_source(@_);
82 if (defined($code) && (!ref($code) || ref($code) ne 'CODE')) {
83 $e = "The 'source' parameter must return a subroutine reference, "
92 my ($source, $__captures) = @_;
96 . substr($_, 0, 1) . '{$__captures->{\'' . $_ . '\'}};'
103 my ($source, $name) = @_;
106 if (try { require Perl::Tidy }) {
107 Perl::Tidy::perltidy(
109 destination => \$output,
116 $name = defined($name) ? $name : "__ANON__";
117 warn $name . ":\n" . $output . "\n";