From 80fe0fa45d086e2376479f21d28802c9a6ff589a Mon Sep 17 00:00:00 2001
From: Karchnu <karchnu@karchnu.fr>
Date: Mon, 23 Nov 2020 16:58:43 +0100
Subject: [PATCH] IPC::CBOR

---
 src/cbor.cr | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 src/cbor.cr

diff --git a/src/cbor.cr b/src/cbor.cr
new file mode 100644
index 0000000..04bdc62
--- /dev/null
+++ b/src/cbor.cr
@@ -0,0 +1,58 @@
+require "cbor"
+
+require "./ipc.cr"
+
+class IPC::CBOR
+	include ::CBOR::Serializable
+
+	@[::CBOR::Field(ignored: true)]
+	getter       type = -1
+	class_getter type = -1
+
+	property     id   : ::CBOR::Any?
+
+	macro message(id, type, &block)
+		class {{id}} < ::IPC::CBOR
+			include ::CBOR::Serializable
+
+			@@type = {{type}}
+			def type
+				@@type
+			end
+
+			{{yield}}
+		end
+	end
+end
+
+class IPC::Context
+	def send(fd : Int32, message : IPC::CBOR)
+		send fd, message.type.to_u8, message.to_cbor
+	end
+	def send_now(fd : Int32, message : IPC::CBOR)
+		send_now fd, message.type.to_u8, message.to_cbor
+	end
+end
+
+class IPC::Client
+	def send(message : IPC::CBOR)
+		send @server_fd.not_nil!, message.type.to_u8, message.to_cbor
+	end
+	def send_now(message : IPC::CBOR)
+		send_now @server_fd.not_nil!, message.type.to_u8, message.to_cbor
+	end
+end
+
+# CAUTION: Only use this method on an Array(IPC::CBOR.class)
+class Array(T)
+	def parse_ipc_cbor(message : IPC::Message) : IPC::CBOR?
+		message_type = find &.type.==(message.utype)
+
+		if message_type.nil?
+			raise "invalid message type (#{message.utype})"
+		end
+
+		message_type.from_cbor message.payload
+	end
+end
+