From 874af34a80ab799d0470810b7ade337b96ce50bc Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Tue, 21 Jul 2015 01:03:37 -0400
Subject: - Added a way to pass the cursor from un-expanded macro-forms to
 their expansions in order to aid error-reporting. - Added recursive type
 definitions through the #rec tag in deftype.

---
 src/lux/analyser.clj     |  2 +-
 src/lux/analyser/lux.clj | 12 +++++++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/lux/analyser.clj b/src/lux/analyser.clj
index 995e77fe6..f85b3d619 100644
--- a/src/lux/analyser.clj
+++ b/src/lux/analyser.clj
@@ -535,7 +535,7 @@
                            ]
         [["lux;Right" [state* =fn]]]
         (do ;; (prn 'GOT_FUN (&/show-ast ?fn) (&/show-ast token) (aget =fn 0 0) (aget =fn 1 0))
-            ((&&lux/analyse-apply (partial analyse-ast eval! compile-module) exo-type =fn ?args) state*))
+            ((&&lux/analyse-apply (partial analyse-ast eval! compile-module) exo-type meta =fn ?args) state*))
 
         [_]
         ((analyse-basic-ast (partial analyse-ast eval! compile-module) eval! compile-module exo-type token) state)))
diff --git a/src/lux/analyser/lux.clj b/src/lux/analyser/lux.clj
index fc96fecff..8be2a8924 100644
--- a/src/lux/analyser/lux.clj
+++ b/src/lux/analyser/lux.clj
@@ -30,6 +30,11 @@
             (return (&/T ?item =type)))
           )))))
 
+(defn ^:private with-cursor [cursor form]
+  (matchv ::M/objects [form]
+    [["lux;Meta" [_ syntax]]]
+    (&/V "lux;Meta" (&/T cursor syntax))))
+
 ;; [Exports]
 (defn analyse-tuple [analyse exo-type ?elems]
   (|do [exo-type* (&type/actual-type exo-type)]
@@ -245,7 +250,7 @@
         (fail (str "[Analyser Error] Can't apply a non-function: " (&type/show-type ?fun-type*)))))
     ))
 
-(defn analyse-apply [analyse exo-type =fn ?args]
+(defn analyse-apply [analyse exo-type form-cursor =fn ?args]
   (|do [loader &/loader]
     (matchv ::M/objects [=fn]
       [[=fn-form =fn-type]]
@@ -255,14 +260,15 @@
           (matchv ::M/objects [$def]
             [["lux;MacroD" macro]]
             (|do [macro-expansion #(-> macro (.apply ?args) (.apply %))
+                  :let [macro-expansion* (&/|map (partial with-cursor form-cursor) macro-expansion)]
                   :let [_ (when (and ;; (= "lux/control/monad" ?module)
                                  (= "case" ?name))
-                            (->> (&/|map &/show-ast macro-expansion)
+                            (->> (&/|map &/show-ast macro-expansion*)
                                  (&/|interpose "\n")
                                  (&/fold str "")
                                  (prn ?module "case")))]
                   ]
-              (&/flat-map% (partial analyse exo-type) macro-expansion))
+              (&/flat-map% (partial analyse exo-type) macro-expansion*))
 
             [_]
             (|do [[=output-t =args] (analyse-apply* analyse exo-type =fn-type ?args)]
-- 
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