From d98d1cb26f8cd3aa49f9c1e9f461ae0ee176df7c Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Wed, 13 Mar 2019 19:55:56 -0400
Subject: The general shape of the compiler has been recognized as a program
 unto itself (albeit a program which must be parameterized).

---
 stdlib/source/program/compositor.lux | 96 ++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 stdlib/source/program/compositor.lux

(limited to 'stdlib/source/program/compositor.lux')

diff --git a/stdlib/source/program/compositor.lux b/stdlib/source/program/compositor.lux
new file mode 100644
index 000000000..5fb90837f
--- /dev/null
+++ b/stdlib/source/program/compositor.lux
@@ -0,0 +1,96 @@
+(.module:
+  [lux #*
+   [type (#+ :share)]
+   [cli (#+ program:)]
+   ["." io (#+ IO io)]
+   [control
+    [monad (#+ do)]]
+   [data
+    ["." error (#+ Error)]
+    ["." text
+     format]]
+   [time
+    ["." instant (#+ Instant)]]
+   [world
+    ["." console]]
+   [tool
+    [compiler
+     ["." statement]
+     [phase
+      [macro (#+ Expander)]
+      ["." generation]]
+     [default
+      ["." platform (#+ Platform)]
+      ["." syntax]]
+     [meta
+      ["." archive (#+ Archive)]]]
+    ## ["." interpreter]
+    ]]
+  [/
+   ["." cli (#+ Service)]])
+
+(def: (or-crash! failure-description action)
+  (All [a]
+    (-> Text (IO (Error a)) (IO a)))
+  (do io.monad
+    [?output action]
+    (case ?output
+      (#error.Failure error)
+      (exec (log! (format text.new-line
+                          failure-description text.new-line
+                          error text.new-line))
+        (io.exit +1))
+
+      (#error.Success output)
+      (wrap output))))
+
+(def: (timed action)
+  (All [a]
+    (-> (-> Any (IO (Error a))) (IO (Error a))))
+  (do (error.with io.monad)
+    [start (: (IO (Error Instant))
+              (error.lift io.monad instant.now))
+     result (action [])
+     finish (: (IO (Error Instant))
+               (error.lift io.monad instant.now))
+     #let [elapsed-time (instant.span start finish)
+           _ (log! (format text.new-line
+                           "Elapsed time: " (%duration elapsed-time)))]]
+    (wrap result)))
+
+(def: #export (compiler expander platform bundle service)
+  (All [anchor expression statement]
+    (-> Expander
+        (IO (Platform IO anchor expression statement))
+        (generation.Bundle anchor expression statement)
+        Service
+        (IO Any)))
+  (do io.monad
+    [platform platform
+     console (:: @ map error.assume console.system)]
+    (case service
+      (#cli.Compilation configuration)
+      (<| (or-crash! "Compilation failed:")
+          ..timed
+          (function (_ _)
+            (do (error.with io.monad)
+              [state (:share [anchor expression statement]
+                             {(Platform IO anchor expression statement)
+                              platform}
+                             {(IO (Error (statement.State+ anchor expression statement)))
+                              (platform.initialize expander platform bundle)})
+               _ (:share [anchor expression statement]
+                         {(Platform IO anchor expression statement)
+                          platform}
+                         {(IO (Error [Archive (statement.State+ anchor expression statement)]))
+                          (platform.compile expander platform configuration archive.empty state)})
+               ## _ (cache/io.clean target ...)
+               ]
+              (wrap (log! "Compilation complete!")))))
+      
+      (#cli.Interpretation configuration)
+      ## TODO: Fix the interpreter...
+      (undefined)
+      ## (<| (or-crash! "Interpretation failed:")
+      ##     (interpreter.run (error.with io.monad) console platform configuration bundle))
+      )))
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