#!/usr/bin/pugs

use v6;
use Test;

plan 28;

=kwid

Namespaces, symbol tables and symbolic references.

=cut

# fail("%:: parse", :todo);
eval_ok('%::', '%:: parses', :todo);
my $symhash   = eval '%::';

my  $lex      = 'bar';
our $lex_s    = 'lex';
our $global   = 'buz';     # global *scalar*, that is; unlike $lex.
our $global_s = 'global';
our @ary      = <a b c d>;
our $ary_s    = 'ary';
#our %hash     = (<1 2 3 4>);
our %hash     = (1 => 2, 3 => 4);
our $hash_s   = 'hash';
sub code        { 42 }
our $code_s   = 'code';

# symref syntax

is eval('$::("MY::$lex_s")'),       $lex,    "loopup of lexical in current scope", :todo;
is eval('$::($global_s)'),          $global, "lookup of global in default package";
is eval('$::("*Main::$global_s")'), $global, "lookup of global in *Main package", :todo;
is eval('~ @::($ary_s)'),           ~ @ary,  "array lookup";
is eval('~ %::($hash_s)'),          ~ %hash, "hash lookup";
is eval('&::($code_s).()'),         code(),  "named sub lookup";

eval_ok('!defined($::("nosuch"))',            "unknown scalar lookup", :todo);
eval_ok('!defined($::("nosuch"))',            "unknown scalar lookup doesn't autovivify", :todo);

eval_ok('!defined($::("MY::nosuch"))',        "unknown lexical lookup", :todo);
eval_ok('!defined($::("MY::nosuch"))',        "unknown lexical lookup doesn't autovivify", :todo);

# (lvalue lexicals -- see below.)


# symtable hash syntax

is(eval('%MY::{\'$\' ~ $lex_s}'),       "bar",   "loopup of lexical in current scope - symtable", :todo);
is(eval('%::{\'$\' ~ $global_s}'),      $global, "lookup of global in default package - symtable", :todo);
is(eval('%*Main::{\'$\' ~ $global_s}'), $global, "lookup of global in *Main package - symtable", :todo);
is(eval('~ %::{\'@\' ~ $ary_s}'),       ~ @ary,  "array lookup - symtable", :todo);
is(eval('~ %::{\'%\' ~ $hash_s}'),      ~ %hash, "array lookup - symtable", :todo);
is(eval('%::{\'&\' ~ $code_s}.()'),     code(),  "named sub lookup - symtable", :todo);

ok(eval('!defined(%::<nosuch>)'),                "unknown scalar lookup", :todo);
ok(eval('!defined(%::<nosuch>)'),                "unknown scalar lookup doesn't autovivify", :todo);

ok(eval('!defined(%MY::<nosuch>)'),              "unknown lexical lookup", :todo);
ok(eval('!defined(%MY::<nosuch>)'),              "unknown lexical lookup doesn't autovivify", :todo);

{
	# fail("package keyword", :todo);
	ok eval('package Other1;'), "package keyword parses", :todo;

	ok eval('%:: eq $symhash'), "package declaration changes current package", :todo;

	our $new_global =         "It is I.";

	my $lex = "carrot";       # hiding "bar".
	is(eval('$::("MY::$lex_s")'),     "carrot",  "loopup of hiding lexical", :todo);

	ok(eval('!defined(%::(\'$\' ~ $global_s))'), "lookup of global in wrong package", :todo); # XXX: error? warning? silent?
	my $a = eval '$::($global_s)';
	my $b = eval '$::("*Main::$global_s")';

	ok(defined $a && defined $b && $a eq $b,   "package search", :todo);

}

ok(defined eval '%::' && eval '%::' eq $symhash, "previous package declaration was scoped", :todo);
is(eval('%::<Other1::$new_global>'),  "It is I.", "Global in other package still visible", :todo);