From 1040a65e6416d4a9c7f758093d4b17f684e1ddbe Mon Sep 17 00:00:00 2001
From: Patrick Spek
Date: Tue, 25 Apr 2017 09:52:04 +0200
Subject: Rename to Hash::Merge
---
lib/Hash/Merge.pm6 | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
create mode 100644 lib/Hash/Merge.pm6
(limited to 'lib/Hash/Merge.pm6')
diff --git a/lib/Hash/Merge.pm6 b/lib/Hash/Merge.pm6
new file mode 100644
index 0000000..b24f25d
--- /dev/null
+++ b/lib/Hash/Merge.pm6
@@ -0,0 +1,51 @@
+#! /usr/bin/env false
+
+use v6.c;
+use MONKEY;
+
+augment class Hash
+{
+ #| Merges a second hash into the hash the method is called on. Hash given as
+ #| the argument is not modified.
+ #| Traverses the full tree, replacing items in the original hash with the
+ #| hash given in the argument. Does not replace positional elements by default,
+ #| and instead appends the items from the supplied hash's array to the original
+ #| hash's array. The object type of positionals is not retained and instead
+ #| becomes an Array type.
+ #| Use :no-append-array to replace arrays and positionals instead, which will
+ #| also retain the original type and not convert to an Array
+ #|
+ method merge (%b; Bool:D :$no-append-array = False)
+ {
+ hashmerge self, %b, :$no-append-array;
+ }
+
+ sub hashmerge (%merge-into, %merge-source, Bool:D :$no-append-array)
+ {
+ for %merge-source.keys -> $key {
+ if %merge-into{$key}:exists {
+ if %merge-source{$key} ~~ Hash {
+ hashmerge %merge-into{$key}, %merge-source{$key}, :$no-append-array;
+ } elsif %merge-source{$key} ~~ Positional {
+ if $no-append-array {
+ %merge-into{$key} = %merge-source{$key};
+ } else {
+ my @a;
+
+ @a.push: $_ for %merge-into{$key}.list;
+ @a.push: $_ for %merge-source{$key}.list;
+
+ %merge-into{$key} = @a;
+ }
+ } else {
+ # Non-positionals, so strings or Bools or whatever
+ %merge-into{$key} = %merge-source{$key};
+ }
+ } else {
+ %merge-into{$key} = %merge-source{$key};
+ }
+ }
+
+ %merge-into;
+ }
+}
--
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