refactoring cyclic requiresv0.0

1 files changed, 26 insertions, 0 deletions

diff --git a/core/cycle.moon b/core/cycle.moon
new file mode 100644
index 0000000..57d4a75
--- /dev/null
+++ b/core/cycle.moon
@@ -0,0 +1,26 @@
+-- late-resolve cyclic dependencies
+--
+-- this module provides a proxy for resolving values from modules which cannot
+-- be loaded due to cyclic dependencies. Instead of
+--
+-- import Something from require 'core.somewhere'
+-- Something ...
+--
+-- use
+--
+-- import somewhere from require 'core.cycle'
+-- somewhere.Something ...
+--
+-- Make sure cycle:load() is called before you access or dereference
+-- `somewhere`.
+
+load = =>
+  for name, module in pairs @
+    for k, v in pairs require "core.#{name}"
+      module[k] = v
+
+setmetatable {}, __index: (key) =>
+  return load if key == 'load'
+
+  with v = {}
+    rawset @, key, v