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(* Title: isabelle/Bali/Name.thy
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ID: $Id$
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Author: David von Oheimb
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Copyright 1997 Technische Universitaet Muenchen
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*)
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header {* Java names *}
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theory Name = Basis:
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(* cf. 6.5 *)
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typedecl tnam (* ordinary type name, i.e. class or interface name *)
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typedecl pname (* package name *)
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typedecl mname (* method name *)
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typedecl vname (* variable or field name *)
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typedecl label (* label as destination of break or continue *)
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arities
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tnam :: "type"
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pname :: "type"
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vname :: "type"
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mname :: "type"
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label :: "type"
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datatype ename (* expression name *)
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= VNam vname
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| Res (* special name to model the return value of methods *)
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datatype lname (* names for local variables and the This pointer *)
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= EName ename
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| This
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syntax
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VName :: "vname \<Rightarrow> lname"
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Result :: lname
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translations
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"VName n" == "EName (VNam n)"
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"Result" == "EName Res"
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datatype xname (* names of standard exceptions *)
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= Throwable
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| NullPointer | OutOfMemory | ClassCast
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| NegArrSize | IndOutBound | ArrStore
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lemma xn_cases:
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"xn = Throwable \<or> xn = NullPointer \<or>
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xn = OutOfMemory \<or> xn = ClassCast \<or>
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xn = NegArrSize \<or> xn = IndOutBound \<or> xn = ArrStore"
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apply (induct xn)
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apply auto
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done
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lemma xn_cases_old: (* FIXME cf. Example.thy *)
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"ALL xn. xn = Throwable \<or> xn = NullPointer \<or>
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xn = OutOfMemory \<or> xn = ClassCast \<or>
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xn = NegArrSize \<or> xn = IndOutBound \<or> xn = ArrStore"
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apply (rule allI)
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apply (induct_tac xn)
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apply auto
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done
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datatype tname (* type names for standard classes and other type names *)
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= Object_
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| SXcpt_ xname
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| TName tnam
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record qtname = (* qualified tname cf. 6.5.3, 6.5.4*)
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pid :: pname
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tid :: tname
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axclass has_pname < "type"
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consts pname::"'a::has_pname \<Rightarrow> pname"
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instance pname::has_pname
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by (intro_classes)
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defs (overloaded)
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pname_pname_def: "pname (p::pname) \<equiv> p"
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axclass has_tname < "type"
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consts tname::"'a::has_tname \<Rightarrow> tname"
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instance tname::has_tname
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by (intro_classes)
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defs (overloaded)
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tname_tname_def: "tname (t::tname) \<equiv> t"
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axclass has_qtname < "type"
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consts qtname:: "'a::has_qtname \<Rightarrow> qtname"
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(* Declare qtname as instance of has_qtname *)
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instance pid_field_type::(has_pname,"type") has_qtname
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by intro_classes
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defs (overloaded)
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qtname_qtname_def: "qtname (q::qtname) \<equiv> q"
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translations
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"mname" <= "Name.mname"
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"xname" <= "Name.xname"
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"tname" <= "Name.tname"
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"ename" <= "Name.ename"
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"qtname" <= (type) "\<lparr>pid::pname,tid::tname\<rparr>"
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(type) "'a qtname_scheme" <= (type) "\<lparr>pid::pname,tid::tname,\<dots>::'a\<rparr>"
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consts java_lang::pname (* package java.lang *)
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consts
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Object :: qtname
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SXcpt :: "xname \<Rightarrow> qtname"
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defs
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Object_def: "Object \<equiv> \<lparr>pid = java_lang, tid = Object_\<rparr>"
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SXcpt_def: "SXcpt \<equiv> \<lambda>x. \<lparr>pid = java_lang, tid = SXcpt_ x\<rparr>"
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lemma Object_neq_SXcpt [simp]: "Object \<noteq> SXcpt xn"
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by (simp add: Object_def SXcpt_def)
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lemma SXcpt_inject [simp]: "(SXcpt xn = SXcpt xm) = (xn = xm)"
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by (simp add: SXcpt_def)
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end
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