puzzle bus message routing functions

1 files changed, 86 insertions, 0 deletions

diff --git a/lib/pbdrv/pb-route.c b/lib/pbdrv/pb-route.c
new file mode 100644
index 0000000..f26d45c
--- /dev/null
+++ b/lib/pbdrv/pb-route.c
@@ -0,0 +1,86 @@
+#include "pb-route.h"
+#include "pb-mod.h"
+#include "pb-send.h"
+
+__weak bool pb_hook_route_msg(pb_msg_t * msg) { return false; }
+__weak void pb_route_msg(pb_msg_t * msg) {
+	if (pb_hook_route_msg(msg)) return;
+
+	switch (msg->type) {
+		case PB_CMD_PROP: return pb_route_cmd_prop(msg);
+		case PB_CMD_STATE: return pb_route_cmd_state(msg);
+		case PB_CMD_MAGIC: return pb_route_cmd_magic(msg);
+		default: return;
+	}
+}
+
+__weak bool pb_hook_route_cmd_prop(pb_msg_t * msg) { return false; }
+__weak void pb_route_cmd_prop(pb_msg_t * msg) {
+	if (pb_hook_route_cmd_prop(msg)) return;
+
+	switch (msg->action) {
+		case PB_ACTION_REQ: return pb_route_cmd_prop_req(msg);
+		case PB_ACTION_RES: return pb_route_cmd_prop_res(msg);
+		case PB_ACTION_SET: return pb_route_cmd_prop_set(msg);
+		default: return;
+	}
+}
+
+__weak bool pb_hook_route_cmd_state(pb_msg_t * msg) { return false; }
+__weak void pb_route_cmd_state(pb_msg_t * msg) {
+	if (pb_hook_route_cmd_state(msg)) return;
+
+	switch (msg->action) {
+		case PB_ACTION_REQ: return pb_route_cmd_state_req(msg);
+		case PB_ACTION_RES: return pb_route_cmd_state_res(msg);
+		case PB_ACTION_SET: return pb_route_cmd_state_set(msg);
+		default: return;
+	}
+}
+
+__weak bool pb_hook_route_cmd_magic(pb_msg_t * msg) { return false; }
+__weak void pb_route_cmd_magic(pb_msg_t * msg) {
+	if (pb_hook_route_cmd_magic(msg)) return;
+
+	switch (msg->action) {
+		case PB_ACTION_REQ: return pb_route_cmd_magic_req(msg);
+		case PB_ACTION_RES: return pb_route_cmd_magic_res(msg);
+		default: return;
+	}
+}
+
+// all properties are user-defined
+__weak void pb_route_cmd_prop_req(pb_msg_t * msg) {}
+__weak void pb_route_cmd_prop_res(pb_msg_t * msg) {}
+__weak void pb_route_cmd_prop_set(pb_msg_t * msg) {}
+
+static pb_global_state_t _main_state = PB_GS_NOINIT;
+__weak void pb_hook_main_state_update(pb_global_state_t state) {}
+__weak void pb_route_cmd_state_req(pb_msg_t * msg) {
+	pb_global_state_t own_state = pb_hook_mod_state_read();
+	pb_buf_t buf = pb_send_state_res(own_state);
+	pb_reply(msg, &buf);
+	pb_buf_free(&buf);
+
+	// notify of new global state variable
+	pb_cmd_state_t * cmd = msg->cmd;
+	if (cmd->state != _main_state)
+		pb_hook_main_state_update(cmd->state);
+	_main_state = cmd->state;
+}
+
+__weak void pb_route_cmd_state_res(pb_msg_t * msg) {}
+
+__weak void pb_route_cmd_state_set(pb_msg_t * msg) {
+	pb_cmd_state_t * cmd = msg->cmd;
+	pb_hook_mod_state_write(cmd->state);
+}
+
+__weak void pb_route_cmd_magic_req(pb_msg_t * msg) {
+	pb_buf_t buf = pb_send_magic_res();
+	pb_reply(msg, &buf);
+	pb_buf_free(&buf);
+}
+
+__weak void pb_route_cmd_magic_res(pb_msg_t * msg) { }
+