Implement .keys method

2 files changed, 47 insertions, 0 deletions

diff --git a/lib/Config.pm6 b/lib/Config.pm6
index d0c1d93..ad9be8a 100644
--- a/lib/Config.pm6
+++ b/lib/Config.pm6
@@ -110,6 +110,31 @@ class Config is Associative is export
         defined($index);
     }
 
+    method keys()
+    {
+        my @keys;
+
+        for $!content.keys -> $key {
+            @keys.append: self.extract-keys($key);
+        }
+
+        @keys.sort;
+    }
+
+    submethod extract-keys($key)
+    {
+        my $value = self.get($key);
+        return $key if $value !~~ Iterable;
+
+        my @keys;
+
+        for $value.keys -> $nested-key {
+            @keys.append: self.extract-keys("{$key}.{$nested-key}");
+        }
+
+        return @keys;
+    }
+
     #| Reload the configuration. Requires the configuration to
     #| have been loaded from a file.
     multi method read()
diff --git a/t/07-keys.t b/t/07-keys.t
new file mode 100644
index 0000000..225c0b8
--- /dev/null
+++ b/t/07-keys.t
@@ -0,0 +1,22 @@
+#! /usr/bin/env perl6
+
+use v6;
+
+use Config::Parser::NULL;
+use Config;
+use Test;
+
+my Config $c .= new.read: %(
+	"a" => False,
+	"b" => False,
+	"c" => %(
+		"a" => False,
+		"b" => False,
+	),
+);
+
+my @keys = < a b c.a c.b >;
+
+is $c.keys, @keys, ".keys returns a list of all keys";
+
+# vim: ft=perl6 noet