From 2feb56660700af107abb5a28a7120052ac405518 Mon Sep 17 00:00:00 2001
From: Josh Chen
Date: Sun, 31 Jan 2021 02:54:51 +0000
Subject: rename things + some small changes

---
 spartan/core/cases.ML | 42 ------------------------------------------
 1 file changed, 42 deletions(-)
 delete mode 100644 spartan/core/cases.ML

(limited to 'spartan/core/cases.ML')

diff --git a/spartan/core/cases.ML b/spartan/core/cases.ML
deleted file mode 100644
index 560a9f1..0000000
--- a/spartan/core/cases.ML
+++ /dev/null
@@ -1,42 +0,0 @@
-(*  Title:      cases.ML
-    Author:     Joshua Chen
-
-Case reasoning.
-*)
-
-structure Case: sig
-
-val rules: Proof.context -> thm list
-val lookup_rule: Proof.context -> Termtab.key -> thm option
-val register_rule: thm -> Context.generic -> Context.generic
-
-end = struct
-
-(* Context data *)
-
-(*Stores elimination rules together with a list of the indexnames of the
-  variables each rule eliminates. Keyed by head of the type being eliminated.*)
-structure Rules = Generic_Data (
-  type T = thm Termtab.table
-  val empty = Termtab.empty
-  val extend = I
-  val merge = Termtab.merge Thm.eq_thm_prop
-)
-
-val rules = map #2 o Termtab.dest o Rules.get o Context.Proof
-fun lookup_rule ctxt = Termtab.lookup (Rules.get (Context.Proof ctxt))
-fun register_rule rl =
-  let val hd = Term.head_of (Lib.type_of_typing (Thm.major_prem_of rl))
-  in Rules.map (Termtab.update (hd, rl)) end
-
-
-(* [cases] attribute *)
-val _ = Theory.setup (
-  Attrib.setup \<^binding>\<open>cases\<close>
-    (Scan.succeed (Thm.declaration_attribute register_rule))
-    ""
-  #> Global_Theory.add_thms_dynamic (\<^binding>\<open>cases\<close>, rules o Context.proof_of)
-)
-
-
-end
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