--- a/src/HOL/IMP/Def_Ass_Big.thy Wed Nov 21 21:08:20 2012 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-(* Author: Tobias Nipkow *)
-
-theory Def_Ass_Big imports Com Def_Ass_Exp
-begin
-
-subsection "Initialization-Sensitive Big Step Semantics"
-
-inductive
- big_step :: "(com \<times> state option) \<Rightarrow> state option \<Rightarrow> bool" (infix "\<Rightarrow>" 55)
-where
-None: "(c,None) \<Rightarrow> None" |
-Skip: "(SKIP,s) \<Rightarrow> s" |
-AssignNone: "aval a s = None \<Longrightarrow> (x ::= a, Some s) \<Rightarrow> None" |
-Assign: "aval a s = Some i \<Longrightarrow> (x ::= a, Some s) \<Rightarrow> Some(s(x := Some i))" |
-Seq: "(c\<^isub>1,s\<^isub>1) \<Rightarrow> s\<^isub>2 \<Longrightarrow> (c\<^isub>2,s\<^isub>2) \<Rightarrow> s\<^isub>3 \<Longrightarrow> (c\<^isub>1;c\<^isub>2,s\<^isub>1) \<Rightarrow> s\<^isub>3" |
-
-IfNone: "bval b s = None \<Longrightarrow> (IF b THEN c\<^isub>1 ELSE c\<^isub>2,Some s) \<Rightarrow> None" |
-IfTrue: "\<lbrakk> bval b s = Some True; (c\<^isub>1,Some s) \<Rightarrow> s' \<rbrakk> \<Longrightarrow>
- (IF b THEN c\<^isub>1 ELSE c\<^isub>2,Some s) \<Rightarrow> s'" |
-IfFalse: "\<lbrakk> bval b s = Some False; (c\<^isub>2,Some s) \<Rightarrow> s' \<rbrakk> \<Longrightarrow>
- (IF b THEN c\<^isub>1 ELSE c\<^isub>2,Some s) \<Rightarrow> s'" |
-
-WhileNone: "bval b s = None \<Longrightarrow> (WHILE b DO c,Some s) \<Rightarrow> None" |
-WhileFalse: "bval b s = Some False \<Longrightarrow> (WHILE b DO c,Some s) \<Rightarrow> Some s" |
-WhileTrue:
- "\<lbrakk> bval b s = Some True; (c,Some s) \<Rightarrow> s'; (WHILE b DO c,s') \<Rightarrow> s'' \<rbrakk> \<Longrightarrow>
- (WHILE b DO c,Some s) \<Rightarrow> s''"
-
-lemmas big_step_induct = big_step.induct[split_format(complete)]
-
-end