--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/Hoare_Parallel/RG_Syntax.thy Mon Sep 21 10:58:25 2009 +0200
@@ -0,0 +1,95 @@
+header {* \section{Concrete Syntax} *}
+
+theory RG_Syntax
+imports RG_Hoare Quote_Antiquote
+begin
+
+syntax
+ "_Assign" :: "idt \<Rightarrow> 'b \<Rightarrow> 'a com" ("(\<acute>_ :=/ _)" [70, 65] 61)
+ "_skip" :: "'a com" ("SKIP")
+ "_Seq" :: "'a com \<Rightarrow> 'a com \<Rightarrow> 'a com" ("(_;;/ _)" [60,61] 60)
+ "_Cond" :: "'a bexp \<Rightarrow> 'a com \<Rightarrow> 'a com \<Rightarrow> 'a com" ("(0IF _/ THEN _/ ELSE _/FI)" [0, 0, 0] 61)
+ "_Cond2" :: "'a bexp \<Rightarrow> 'a com \<Rightarrow> 'a com" ("(0IF _ THEN _ FI)" [0,0] 56)
+ "_While" :: "'a bexp \<Rightarrow> 'a com \<Rightarrow> 'a com" ("(0WHILE _ /DO _ /OD)" [0, 0] 61)
+ "_Await" :: "'a bexp \<Rightarrow> 'a com \<Rightarrow> 'a com" ("(0AWAIT _ /THEN /_ /END)" [0,0] 61)
+ "_Atom" :: "'a com \<Rightarrow> 'a com" ("(\<langle>_\<rangle>)" 61)
+ "_Wait" :: "'a bexp \<Rightarrow> 'a com" ("(0WAIT _ END)" 61)
+
+translations
+ "\<acute>\<spacespace>x := a" \<rightharpoonup> "Basic \<guillemotleft>\<acute>\<spacespace>(_update_name x (\<lambda>_. a))\<guillemotright>"
+ "SKIP" \<rightleftharpoons> "Basic id"
+ "c1;; c2" \<rightleftharpoons> "Seq c1 c2"
+ "IF b THEN c1 ELSE c2 FI" \<rightharpoonup> "Cond .{b}. c1 c2"
+ "IF b THEN c FI" \<rightleftharpoons> "IF b THEN c ELSE SKIP FI"
+ "WHILE b DO c OD" \<rightharpoonup> "While .{b}. c"
+ "AWAIT b THEN c END" \<rightleftharpoons> "Await .{b}. c"
+ "\<langle>c\<rangle>" \<rightleftharpoons> "AWAIT True THEN c END"
+ "WAIT b END" \<rightleftharpoons> "AWAIT b THEN SKIP END"
+
+nonterminals
+ prgs
+
+syntax
+ "_PAR" :: "prgs \<Rightarrow> 'a" ("COBEGIN//_//COEND" 60)
+ "_prg" :: "'a \<Rightarrow> prgs" ("_" 57)
+ "_prgs" :: "['a, prgs] \<Rightarrow> prgs" ("_//\<parallel>//_" [60,57] 57)
+
+translations
+ "_prg a" \<rightharpoonup> "[a]"
+ "_prgs a ps" \<rightharpoonup> "a # ps"
+ "_PAR ps" \<rightharpoonup> "ps"
+
+syntax
+ "_prg_scheme" :: "['a, 'a, 'a, 'a] \<Rightarrow> prgs" ("SCHEME [_ \<le> _ < _] _" [0,0,0,60] 57)
+
+translations
+ "_prg_scheme j i k c" \<rightleftharpoons> "(map (\<lambda>i. c) [j..<k])"
+
+text {* Translations for variables before and after a transition: *}
+
+syntax
+ "_before" :: "id \<Rightarrow> 'a" ("\<ordmasculine>_")
+ "_after" :: "id \<Rightarrow> 'a" ("\<ordfeminine>_")
+
+translations
+ "\<ordmasculine>x" \<rightleftharpoons> "x \<acute>fst"
+ "\<ordfeminine>x" \<rightleftharpoons> "x \<acute>snd"
+
+print_translation {*
+ let
+ fun quote_tr' f (t :: ts) =
+ Term.list_comb (f $ Syntax.quote_tr' "_antiquote" t, ts)
+ | quote_tr' _ _ = raise Match;
+
+ val assert_tr' = quote_tr' (Syntax.const "_Assert");
+
+ fun bexp_tr' name ((Const ("Collect", _) $ t) :: ts) =
+ quote_tr' (Syntax.const name) (t :: ts)
+ | bexp_tr' _ _ = raise Match;
+
+ fun upd_tr' (x_upd, T) =
+ (case try (unsuffix Record.updateN) x_upd of
+ SOME x => (x, if T = dummyT then T else Term.domain_type T)
+ | NONE => raise Match);
+
+ fun update_name_tr' (Free x) = Free (upd_tr' x)
+ | update_name_tr' ((c as Const ("_free", _)) $ Free x) =
+ c $ Free (upd_tr' x)
+ | update_name_tr' (Const x) = Const (upd_tr' x)
+ | update_name_tr' _ = raise Match;
+
+ fun K_tr' (Abs (_,_,t)) = if null (loose_bnos t) then t else raise Match
+ | K_tr' (Abs (_,_,Abs (_,_,t)$Bound 0)) = if null (loose_bnos t) then t else raise Match
+ | K_tr' _ = raise Match;
+
+ fun assign_tr' (Abs (x, _, f $ k $ Bound 0) :: ts) =
+ quote_tr' (Syntax.const "_Assign" $ update_name_tr' f)
+ (Abs (x, dummyT, K_tr' k) :: ts)
+ | assign_tr' _ = raise Match;
+ in
+ [("Collect", assert_tr'), ("Basic", assign_tr'),
+ ("Cond", bexp_tr' "_Cond"), ("While", bexp_tr' "_While_inv")]
+ end
+*}
+
+end
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