diff -r 69032a618aa9 -r d14c4e9e9c8e src/HOL/MicroJava/J/WellType.ML
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/MicroJava/J/WellType.ML	Thu Nov 11 12:23:45 1999 +0100
@@ -0,0 +1,61 @@
+(*  Title:      HOL/MicroJava/J/WellType.ML
+    ID:         $Id$
+    Author:     David von Oheimb
+    Copyright   1999 Technische Universitaet Muenchen
+*)
+
+Goalw [m_head_def]
+"\\<lbrakk> m_head G T sig = Some (md,rT); wf_prog wtm G; G\\<turnstile>Class T''\\<preceq>RefT T\\<rbrakk> \\<Longrightarrow> \
+\\\<exists>md' rT' b'. cmethd (G,T'') sig = Some (md',rT',b') \\<and>  G\\<turnstile>rT'\\<preceq>rT";
+by( forward_tac [widen_Class_RefT] 1);
+by( etac exE 1);
+by( hyp_subst_tac 1);
+by( asm_full_simp_tac (simpset() delsimps [split_paired_Ex]) 1);
+by( rewtac option_map_def);
+by( strip_tac1 1);
+by( split_all_tac 1);
+by( dtac widen_Class_Class 1);
+by( etac disjE 1);
+by(  hyp_subst_tac 1);
+by(  asm_full_simp_tac (simpset() delsimps [split_paired_Ex]) 1);
+by( dtac subcls_widen_methd 1);
+by   Auto_tac;
+qed "widen_methd";
+
+
+Goal
+"\\<lbrakk>m_head G T sig = Some (md,rT); G\\<turnstile>Class T''\\<preceq>RefT T; wf_prog wtm G\\<rbrakk> \\<Longrightarrow> \
+\ \\<exists>T' rT' b. cmethd (G,T'') sig = Some (T',rT',b) \\<and> \
+\ G\\<turnstile>rT'\\<preceq>rT \\<and> G\\<turnstile>Class T''\\<preceq>Class T' \\<and> wf_mhead G sig rT' \\<and> wtm G T' (sig,rT',b)";
+by( dtac widen_methd 1);
+by(   atac 1);
+by(  atac 1);
+by( Clarsimp_tac 1);
+by( dtac cmethd_wf_mdecl 1);
+by(  atac 1);
+by( rewtac wf_mdecl_def);
+by Auto_tac;
+val Call_lemma = result();
+
+
+val m_head_Object = prove_goalw thy [m_head_def]
+"\\<And>x. wf_prog wtm G \\<Longrightarrow> m_head G (ClassT Object) sig = None" (K [Asm_simp_tac 1]);
+
+Addsimps [m_head_Object];
+
+val max_spec2appl_meths = prove_goalw thy [max_spec_def] 
+	"x \\<in> max_spec G rT sig \\<longrightarrow> x \\<in> appl_methds G rT sig" 
+	(fn _ => [Fast_tac 1]) RS mp;
+
+val appl_methsD = prove_goalw thy [appl_methds_def] 
+"(mh,pTs')\\<in>appl_methds G rT (mn, pTs) \\<longrightarrow> \
+\      m_head G rT (mn, pTs') = Some mh \\<and> list_all2 (\\<lambda>T T'. G\\<turnstile>T\\<preceq>T') pTs pTs'"
+	(K [Fast_tac 1]) RS mp;
+
+val is_type_typeof = prove_goal thy 
+	"(\\<forall>a. v \\<noteq> Addr a) \\<longrightarrow> (\\<exists>T. typeof t v = Some T \\<and>  is_type G T)" (K [
+	rtac val_.induct 1,
+	    Fast_tac 5,
+	   ALLGOALS Simp_tac]) RS mp;
+
+Addsimps [is_type_typeof];