X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fng_assembly%2Fcompiler%2Fast_type_lemmas.ma;fp=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fng_assembly%2Fcompiler%2Fast_type_lemmas.ma;h=7a257f3358b16a6947944bb5688890610a0bae44;hb=17e7978cda0dfa4585393b0c48bd96e9504a6b92;hp=0000000000000000000000000000000000000000;hpb=20166e1ce9d14f6a3586a10d98ac3f1571207586;p=helm.git

diff --git a/helm/software/matita/contribs/ng_assembly/compiler/ast_type_lemmas.ma b/helm/software/matita/contribs/ng_assembly/compiler/ast_type_lemmas.ma
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+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||M||                                                             *)
+(*      ||A||       A project by Andrea Asperti                           *)
+(*      ||T||                                                             *)
+(*      ||I||       Developers:                                           *)
+(*      ||T||         The HELM team.                                      *)
+(*      ||A||         http://helm.cs.unibo.it                             *)
+(*      \   /                                                             *)
+(*       \ /        This file is distributed under the terms of the       *)
+(*        v         GNU General Public License Version 2                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+(* ********************************************************************** *)
+(*                          Progetto FreeScale                            *)
+(*                                                                        *)
+(*   Sviluppato da: Cosimo Oliboni, oliboni@cs.unibo.it                   *)
+(*     Cosimo Oliboni, oliboni@cs.unibo.it                                *)
+(*                                                                        *)
+(* ********************************************************************** *)
+
+include "compiler/ast_type.ma".
+include "common/list_utility_lemmas.ma".
+
+(* ************************* *)
+(* dimensioni degli elementi *)
+(* ************************* *)
+
+ndefinition astbasetype_destruct_aux ≝
+Πb1,b2:ast_base_type.ΠP:Prop.b1 = b2 →
+ match b1 with
+  [ AST_BASE_TYPE_BYTE8 ⇒ match b2 with [ AST_BASE_TYPE_BYTE8 ⇒ P → P | _ ⇒ P ]
+  | AST_BASE_TYPE_WORD16 ⇒ match b2 with [ AST_BASE_TYPE_WORD16 ⇒ P → P | _ ⇒ P ]
+  | AST_BASE_TYPE_WORD32 ⇒ match b2 with [ AST_BASE_TYPE_WORD32 ⇒ P → P | _ ⇒ P ]
+  ].
+
+ndefinition astbasetype_destruct : astbasetype_destruct_aux.
+ #b1; #b2; #P;
+ nelim b1;
+ nelim b2;
+ nnormalize;
+ #H;
+ ##[ ##1,5,9: napply (λx:P.x)
+ ##| ##2,3: napply False_ind;
+            nchange with (match AST_BASE_TYPE_BYTE8 with [ AST_BASE_TYPE_BYTE8 ⇒ False | _ ⇒ True]);
+            nrewrite > H;
+            nnormalize;
+            napply I
+ ##| ##4,6: napply False_ind;
+            nchange with (match AST_BASE_TYPE_WORD16 with [ AST_BASE_TYPE_WORD16 ⇒ False | _ ⇒ True]);
+            nrewrite > H;
+            nnormalize;
+            napply I
+ ##| ##7,8: napply False_ind;
+            nchange with (match AST_BASE_TYPE_WORD32 with [ AST_BASE_TYPE_WORD32 ⇒ False | _ ⇒ True]);
+            nrewrite > H;
+            nnormalize;
+            napply I
+ ##]
+nqed.
+
+nlemma symmetric_eqastbasetype : symmetricT ast_base_type bool eq_ast_base_type.
+ #b1; #b2; ncases b1; ncases b2; nnormalize; napply refl_eq. nqed.
+
+nlemma eqastbasetype_to_eq : ∀b1,b2.eq_ast_base_type b1 b2 = true → b1 = b2.
+ #b1; #b2; ncases b1; ncases b2; nnormalize;
+ ##[ ##1,5,9: #H; napply refl_eq
+ ##| ##*: #H; napply (bool_destruct … H)
+ ##]
+nqed.
+
+nlemma eq_to_eqastbasetype : ∀b1,b2.b1 = b2 → eq_ast_base_type b1 b2 = true.
+ #b1; #b2; ncases b1; ncases b2; nnormalize;
+ ##[ ##1,5,9: #H; napply refl_eq
+ ##| ##*: #H; napply (astbasetype_destruct … H)
+ ##]
+nqed.
+
+nlemma asttype_destruct_base_base : ∀b1,b2.AST_TYPE_BASE b1 = AST_TYPE_BASE b2 → b1 = b2.
+ #b1; #b2; #H;
+ nchange with (match AST_TYPE_BASE b2 with [ AST_TYPE_BASE a ⇒ b1 = a | _ ⇒ False ]);
+ nrewrite < H;
+ nnormalize;
+ napply refl_eq.
+nqed.
+
+nlemma asttype_destruct_array_array_1 : ∀x1,x2,y1,y2.AST_TYPE_ARRAY x1 y1 = AST_TYPE_ARRAY x2 y2 → x1 = x2.
+ #x1; #x2; #y1; #y2; #H;
+ nchange with (match AST_TYPE_ARRAY x2 y2 with [ AST_TYPE_ARRAY a _ ⇒ x1 = a | _ ⇒ False ]);
+ nrewrite < H;
+ nnormalize;
+ napply refl_eq.
+nqed.
+
+nlemma asttype_destruct_array_array_2 : ∀x1,x2,y1,y2.AST_TYPE_ARRAY x1 y1 = AST_TYPE_ARRAY x2 y2 → y1 = y2.
+ #x1; #x2; #y1; #y2; #H;
+ nchange with (match AST_TYPE_ARRAY x2 y2 with [ AST_TYPE_ARRAY _ b ⇒ y1 = b | _ ⇒ False ]);
+ nrewrite < H;
+ nnormalize;
+ napply refl_eq.
+nqed.
+
+nlemma asttype_destruct_struct_struct : ∀b1,b2.AST_TYPE_STRUCT b1 = AST_TYPE_STRUCT b2 → b1 = b2.
+ #b1; #b2; #H;
+ nchange with (match AST_TYPE_STRUCT b2 with [ AST_TYPE_STRUCT a ⇒ b1 = a | _ ⇒ False ]);
+ nrewrite < H;
+ nnormalize;
+ napply refl_eq.
+nqed.
+
+ndefinition asttype_destruct_aux ≝
+Πb1,b2:ast_type.ΠP:Prop.b1 = b2 →
+ match b1 with
+  [ AST_TYPE_BASE s1 ⇒ match b2 with
+   [ AST_TYPE_BASE s2 ⇒ match s1 with
+    [ AST_BASE_TYPE_BYTE8 ⇒ match s2 with [ AST_BASE_TYPE_BYTE8 ⇒ P → P | _ ⇒ P ]
+    | AST_BASE_TYPE_WORD16 ⇒ match s2 with [ AST_BASE_TYPE_WORD16 ⇒ P → P | _ ⇒ P ]
+    | AST_BASE_TYPE_WORD32 ⇒ match s2 with [ AST_BASE_TYPE_WORD32 ⇒ P → P | _ ⇒ P ]
+    ] | _ ⇒ P ]
+  | AST_TYPE_ARRAY _ _ ⇒ match b2 with [ AST_TYPE_ARRAY _ _ ⇒ P → P | _ ⇒ P ]
+  | AST_TYPE_STRUCT _ ⇒ match b2 with [ AST_TYPE_STRUCT _ ⇒ P → P | _ ⇒ P ]
+  ].
+
+ndefinition asttype_destruct : asttype_destruct_aux.
+ #b1; #b2; #P;
+ ncases b1;
+ ##[ ##1: ncases b2;
+          ##[ ##1: nnormalize; #s1; #s2; ncases s1; ncases s2; nnormalize;
+                   ##[ ##1,5,9: #H; napply (λx:P.x)
+                   ##| ##*: #H; napply (astbasetype_destruct … (asttype_destruct_base_base … H))
+                   ##]
+          ##| ##2: #t; #n; #b; nnormalize; #H
+          ##| ##3: #l; #b; nnormalize; #H
+          ##]
+          napply False_ind;
+          nchange with (match AST_TYPE_BASE b with [ AST_TYPE_BASE _ ⇒ False | _ ⇒ True ]);
+          nrewrite > H; nnormalize; napply I
+ ##| ##2: ncases b2;
+          ##[ ##2: #t1; #n1; #t2; #n2; nnormalize; #H; napply (λx:P.x)
+          ##| ##1: #b; #t; #n; nnormalize; #H
+          ##| ##3: #l; #t; #n; nnormalize; #H
+          ##]
+          napply False_ind;
+          nchange with (match AST_TYPE_ARRAY t n with [ AST_TYPE_ARRAY _ _ ⇒ False | _ ⇒ True ]);
+          nrewrite > H; nnormalize; napply I
+ ##| ##3: ncases b2;
+          ##[ ##3: #l1; #l2; nnormalize; #H; napply (λx:P.x)
+          ##| ##1: #b; #l; nnormalize; #H
+          ##| ##2: #t; #n; #l; nnormalize; #H
+          ##]
+          napply False_ind;
+          nchange with (match AST_TYPE_STRUCT l with [ AST_TYPE_STRUCT _ ⇒ False | _ ⇒ True ]);
+          nrewrite > H; nnormalize; napply I
+ ##]
+nqed.
+
+nlemma symmetric_eqasttype_aux1
+ : ∀nl1,nl2.
+  (eq_ast_type (AST_TYPE_STRUCT nl1) (AST_TYPE_STRUCT nl2)) = (eq_ast_type (AST_TYPE_STRUCT nl2) (AST_TYPE_STRUCT nl1)) →
+  (bfold_right_neList2 ? (λx,y.eq_ast_type x y) nl1 nl2) = (bfold_right_neList2 ? (λx,y.eq_ast_type x y) nl2 nl1).
+ #nl1; #nl2; #H;
+ napply H.
+nqed.
+
+nlemma symmetric_eqasttype : symmetricT ast_type bool eq_ast_type.
+ #t1; napply (ast_type_index … t1);
+ ##[ ##1: #b1; #t2; ncases t2;
+          ##[ ##1: #b2; nchange with ((eq_ast_base_type b1 b2) = (eq_ast_base_type b2 b1));
+                   nrewrite > (symmetric_eqastbasetype b1 b2);
+                   napply refl_eq
+          ##| ##2: #st2; #n2; nnormalize; napply refl_eq
+          ##| ##3: #nl2; nnormalize; napply refl_eq
+          ##]
+ ##| ##2: #st1; #n1; #H; #t2; ncases t2;
+          ##[ ##2: #st2; #n2; nchange with (((eq_ast_type st1 st2)⊗(eq_nat n1 n2)) = ((eq_ast_type st2 st1)⊗(eq_nat n2 n1)));
+                   nrewrite > (symmetric_eqnat n1 n2);
+                   nrewrite > (H st2);
+                   napply refl_eq
+          ##| ##1: #b2; nnormalize; napply refl_eq
+          ##| ##3: #nl2; nnormalize; napply refl_eq
+          ##]
+ ##| ##3: #hh1; #H; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; nchange with ((eq_ast_type hh1 hh2) = (eq_ast_type hh2 hh1));
+                            nrewrite > (H hh2);
+                            napply refl_eq
+                   ##| ##2: #hh2; #ll2; nnormalize; napply refl_eq
+                   ##]
+          ##| ##1: #b2; nnormalize; napply refl_eq
+          ##| ##2: #st2; #n2; nnormalize; napply refl_eq
+          ##]
+ ##| ##4: #hh1; #ll1; #H; #H1; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; nnormalize; napply refl_eq
+                   ##| ##2: #hh2; #ll2; nnormalize;
+                            nrewrite > (H hh2);
+                            nrewrite > (symmetric_eqasttype_aux1 ll1 ll2 (H1 (AST_TYPE_STRUCT ll2)));
+                            napply refl_eq
+                   ##]
+          ##| ##1: #b2; nnormalize; napply refl_eq
+          ##| ##2: #st2; #n2; nnormalize; napply refl_eq
+          ##]
+ ##]
+nqed.
+
+nlemma eqasttype_to_eq : ∀t1,t2.eq_ast_type t1 t2 = true → t1 = t2.
+ #t1;
+ napply (ast_type_index … t1);
+ ##[ ##1: #b1; #t2; ncases t2;
+          ##[ ##1: #b2; #H; nchange in H:(%) with ((eq_ast_base_type b1 b2) = true);
+                   nrewrite > (eqastbasetype_to_eq b1 b2 H);
+                   napply refl_eq
+          ##| ##2: #st2; #n2; nnormalize; #H; napply (bool_destruct … H)
+          ##| ##3: #nl2; nnormalize; #H; napply (bool_destruct … H)
+          ##]
+ ##| ##2: #st1; #n1; #H; #t2; ncases t2;
+          ##[ ##2: #st2; #n2; #H1; nchange in H1:(%) with (((eq_ast_type st1 st2)⊗(eq_nat n1 n2)) = true);
+                   nrewrite > (H st2 (andb_true_true_l … H1));
+                   nrewrite > (eqnat_to_eq n1 n2 (andb_true_true_r … H1));
+                   napply refl_eq
+          ##| ##1: #b2; nnormalize; #H1; napply (bool_destruct … H1)
+          ##| ##3: #nl2; nnormalize; #H1; napply (bool_destruct … H1)
+          ##]
+ ##| ##3: #hh1; #H; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; #H1; nchange in H1:(%) with ((eq_ast_type hh1 hh2) = true);
+                            nrewrite > (H hh2 H1);
+                            napply refl_eq
+                   ##| ##2: #hh2; #ll2; nnormalize; #H1; napply (bool_destruct … H1)
+                   ##]
+          ##| ##1: #b2; nnormalize; #H1; napply (bool_destruct … H1)
+          ##| ##2: #st2; #n2; nnormalize; #H1; napply (bool_destruct … H1)
+          ##]
+ ##| ##4: #hh1; #ll1; #H; #H1; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; nnormalize; #H2; napply (bool_destruct … H2)
+                   ##| ##2: #hh2; #ll2; #H2; nchange in H2:(%) with (((eq_ast_type hh1 hh2)⊗(bfold_right_neList2 ? (λx,y.eq_ast_type x y) ll1 ll2)) = true);
+                            nrewrite > (H hh2 (andb_true_true_l … H2));
+                            nrewrite > (asttype_destruct_struct_struct ll1 ll2 (H1 (AST_TYPE_STRUCT ll2) (andb_true_true_r … H2)));
+                            napply refl_eq
+                   ##]
+          ##| ##1: #b2; nnormalize; #H2; napply (bool_destruct … H2)
+          ##| ##2: #st2; #n2; nnormalize; #H2; napply (bool_destruct … H2)
+          ##]
+ ##]
+nqed.
+
+nlemma eq_to_eqasttype_aux1
+ : ∀nl1,nl2.
+  ((eq_ast_type (AST_TYPE_STRUCT nl1) (AST_TYPE_STRUCT nl2)) = true) →
+  ((bfold_right_neList2 ? (λx,y.eq_ast_type x y) nl1 nl2) = true).
+ #nl1; #nl2; #H;
+ napply H.
+nqed.
+
+nlemma eq_to_eqasttype : ∀t1,t2.t1 = t2 → eq_ast_type t1 t2 = true.
+ #t1;
+ napply (ast_type_index … t1);
+ ##[ ##1: #b1; #t2; ncases t2;
+          ##[ ##1: #b2; #H; nrewrite > (asttype_destruct_base_base … H);
+                   nchange with ((eq_ast_base_type b2 b2) = true);
+                   nrewrite > (eq_to_eqastbasetype b2 b2 (refl_eq …));
+                   napply refl_eq
+          ##| ##2: #st2; #n2; #H; napply (asttype_destruct … H)
+          ##| ##3: #nl2; #H; napply (asttype_destruct … H)
+          ##]
+ ##| ##2: #st1; #n1; #H; #t2; ncases t2;
+          ##[ ##2: #st2; #n2; #H1;  nchange with (((eq_ast_type st1 st2)⊗(eq_nat n1 n2)) = true);
+                   nrewrite > (H st2 (asttype_destruct_array_array_1 … H1));
+                   nrewrite > (eq_to_eqnat n1 n2 (asttype_destruct_array_array_2 … H1));
+                   nnormalize;
+                   napply refl_eq
+          ##| ##1: #b2; #H1; napply (asttype_destruct … H1)
+          ##| ##3: #nl2; #H1; napply (asttype_destruct … H1)
+          ##]
+ ##| ##3: #hh1; #H; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; #H1; nchange with ((eq_ast_type hh1 hh2) = true);
+                            nrewrite > (H hh2 (nelist_destruct_nil_nil ? hh1 hh2 (asttype_destruct_struct_struct … H1)));
+                            napply refl_eq
+                   ##| ##2: #hh2; #ll2; #H1; nelim (nelist_destruct_nil_cons ? hh1 hh2 ll2 (asttype_destruct_struct_struct … H1))
+                   ##]
+          ##| ##1: #b2; #H1; napply (asttype_destruct … H1)
+          ##| ##2: #st2; #n2; #H1; napply (asttype_destruct … H1)
+          ##]
+ ##| ##4: #hh1; #ll1; #H; #H1; #t2; ncases t2;
+          ##[ ##3: #nl2; ncases nl2;
+                   ##[ ##1: #hh2; #H2; nelim (nelist_destruct_cons_nil ? hh1 hh2 ll1 (asttype_destruct_struct_struct … H2))
+                   ##| ##2: #hh2; #ll2; #H2; nchange with (((eq_ast_type hh1 hh2)⊗(bfold_right_neList2 ? (λx,y.eq_ast_type x y) ll1 ll2)) = true);
+                            nrewrite > (H hh2 (nelist_destruct_cons_cons_1 … (asttype_destruct_struct_struct … H2)));
+                            nrewrite > (eq_to_eqasttype_aux1 ll1 ll2 (H1 (AST_TYPE_STRUCT ll2) ?));
+                            ##[ ##1: nnormalize; napply refl_eq
+                            ##| ##2: nrewrite > (nelist_destruct_cons_cons_2 … (asttype_destruct_struct_struct … H2));
+                                     napply refl_eq
+                            ##]
+                   ##]
+          ##| ##1: #b2; #H2; napply (asttype_destruct … H2)
+          ##| ##2: #st2; #n2; #H2; napply (asttype_destruct … H2)
+          ##]
+ ##]
+nqed.
+
+nlemma isbastbasetype_to_isastbasetype : ∀ast.isb_ast_base_type ast = true → is_ast_base_type ast.
+ #ast;
+ ncases ast;
+ nnormalize;
+ ##[ ##1: #t; #H; napply I
+ ##| ##2: #t; #n; #H; napply (bool_destruct … H)
+ ##| ##3: #t; #H; napply (bool_destruct … H)
+ ##]
+nqed.
+
+nlemma isntbastbasetype_to_isntastbasetype : ∀ast.isntb_ast_base_type ast = true → isnt_ast_base_type ast.
+ #ast;
+ ncases ast;
+ nnormalize;
+ ##[ ##1: #t; #H; napply (bool_destruct … H)
+ ##| ##2: #t; #n; #H; napply I
+ ##| ##3: #l; #H; napply I
+ ##]
+nqed.