From 50c1e5af53a2ade8692bcfd1a62f6db0ae3ca09d Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Thu, 22 Dec 2022 15:57:48 +0900
Subject: [PATCH] toolbox.sh: Don't require interfaces to be included manually

When a module implements an interface, it has to include the module
that defines the interface before calling `implements()'. However,
since the name of an interface and the module that defines it are
necessarily identical, there is no ambiguity and the module should
be included automatically.

This commit modifies the function `implements()' so that it includes
the interface's module before registering the implementation.
---
 toolbox.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/toolbox.sh b/toolbox.sh
index 802c5cc..71e5725 100644
--- a/toolbox.sh
+++ b/toolbox.sh
@@ -234,6 +234,10 @@ implements() {
 	local method
 	declare -n interface
 
+	if ! include "$iface"; then
+		return 1
+	fi
+
 	if [[ -z "${__TOOLBOX_INTERFACES[$iface]}" ]]; then
 		echo "ERROR: Unknown interface: \"$iface\"" 1>&2
 		return 1
-- 
2.47.3