Especialize working reasonably well; need to add new closure representation pass

1 files changed, 69 insertions, 0 deletions

diff --git a/src/reduce_local.sml b/src/reduce_local.sml
new file mode 100644
index 00000000..6a6d80a8
--- /dev/null
+++ b/src/reduce_local.sml
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+(* Copyright (c) 2008, Adam Chlipala
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - The names of contributors may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+(* Simplify a Core program algebraically, without unfolding definitions *)
+
+structure ReduceLocal :> REDUCE_LOCAL = struct
+
+open Core
+
+structure E = CoreEnv
+structure U = CoreUtil
+
+val subExpInExp = E.subExpInExp
+
+fun default x = x
+
+fun exp (e : exp') =
+    let
+        (*val () = Print.prefaces "exp" [("e", CorePrint.p_exp env (e, ErrorMsg.dummySpan))]*)
+
+        val r = case e of
+                    EApp ((EAbs (x, t, _, e1), loc), e2) =>
+                    ((*Print.prefaces "Substitute" [("x", Print.PD.string x),
+                                                  ("t", CorePrint.p_con CoreEnv.empty t)];*)
+                     #1 (reduceExp (subExpInExp (0, e2) e1)))
+
+                  | EField ((ERecord xes, _), (CName x, _), _) =>
+                    (case List.find (fn ((CName x', _), _, _) => x' = x
+                                      | _ => false) xes of
+                         SOME (_, (e, _), _) => e
+                       | NONE => e)
+
+                  | _ => e
+    in
+        (*Print.prefaces "exp'" [("e", CorePrint.p_exp env (e, ErrorMsg.dummySpan)),
+                               ("r", CorePrint.p_exp env (r, ErrorMsg.dummySpan))];*)
+
+        r
+    end
+
+and reduceExp e = U.Exp.map {kind = default, con = default, exp = exp} e
+
+val reduce = U.File.map {kind = default, con = default, exp = exp, decl = default}
+
+end