(* ID: $Id$
Author: Florian Haftmann, TU Muenchen
*)
header {* Small examples for evaluation mechanisms *}
theory Eval_Examples
imports Eval "~~/src/HOL/Real/Rational"
begin
text {* SML evaluation oracle *}
lemma "True \<or> False" by evaluation
lemma "\<not> (Suc 0 = Suc 1)" by evaluation
lemma "[] = ([]\<Colon> int list)" by evaluation
lemma "[()] = [()]" by evaluation
lemma "fst ([]::nat list, Suc 0) = []" by evaluation
text {* evaluation oracle *}
lemma "True \<or> False" by eval
lemma "\<not> (Suc 0 = Suc 1)" by eval
lemma "[] = ([]\<Colon> int list)" by eval
lemma "[()] = [()]" by eval
lemma "fst ([]::nat list, Suc 0) = []" by eval
text {* term evaluation *}
value "(Suc 2 + 1) * 4"
value (code) "(Suc 2 + 1) * 4"
value (SML) "(Suc 2 + 1) * 4"
value ("normal_form") "(Suc 2 + 1) * 4"
value "(Suc 2 + Suc 0) * Suc 3"
value (code) "(Suc 2 + Suc 0) * Suc 3"
value (SML) "(Suc 2 + Suc 0) * Suc 3"
value ("normal_form") "(Suc 2 + Suc 0) * Suc 3"
value "nat 100"
value (code) "nat 100"
value (SML) "nat 100"
value ("normal_form") "nat 100"
value "(10\<Colon>int) \<le> 12"
value (code) "(10\<Colon>int) \<le> 12"
value (SML) "(10\<Colon>int) \<le> 12"
value ("normal_form") "(10\<Colon>int) \<le> 12"
value "max (2::int) 4"
value (code) "max (2::int) 4"
value (SML) "max (2::int) 4"
value ("normal_form") "max (2::int) 4"
value "of_int 2 / of_int 4 * (1::rat)"
(*value (code) "of_int 2 / of_int 4 * (1::rat)" FIXME*)
value (SML) "of_int 2 / of_int 4 * (1::rat)"
value ("normal_form") "of_int 2 / of_int 4 * (1::rat)"
value "[]::nat list"
value (code) "[]::nat list"
(*value (SML) "[]::nat list" FIXME*)
value ("normal_form") "[]::nat list"
value "[(nat 100, ())]"
value (code) "[(nat 100, ())]"
(*value (SML) "[(nat 100, ())]" FIXME*)
value ("normal_form") "[(nat 100, ())]"
text {* a fancy datatype *}
datatype ('a, 'b) bair =
Bair "'a\<Colon>order" 'b
| Shift "('a, 'b) cair"
| Dummy unit
and ('a, 'b) cair =
Cair 'a 'b
value "Shift (Cair (4::nat) [Suc 0])"
value (code) "Shift (Cair (4::nat) [Suc 0])"
value (SML) "Shift (Cair (4::nat) [Suc 0])"
value ("normal_form") "Shift (Cair (4::nat) [Suc 0])"
end