src/HOL/Prolog/HOHH.thy
author haftmann
Fri Nov 01 18:51:14 2013 +0100 (2013-11-01)
changeset 54230 b1d955791529
parent 48891 c0eafbd55de3
child 58889 5b7a9633cfa8
permissions -rw-r--r--
more simplification rules on unary and binary minus
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(*  Title:    HOL/Prolog/HOHH.thy
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    Author:   David von Oheimb (based on a lecture on Lambda Prolog by Nadathur)
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*)
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header {* Higher-order hereditary Harrop formulas *}
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theory HOHH
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imports HOL
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begin
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ML_file "prolog.ML"
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method_setup ptac =
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  {* Attrib.thms >> (fn thms => fn ctxt => SIMPLE_METHOD' (Prolog.ptac ctxt thms)) *}
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  "basic Lambda Prolog interpreter"
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method_setup prolog =
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  {* Attrib.thms >> (fn thms => fn ctxt => SIMPLE_METHOD (Prolog.prolog_tac ctxt thms)) *}
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  "Lambda Prolog interpreter"
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consts
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(* D-formulas (programs):  D ::= !x. D | D .. D | D :- G | A            *)
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  Dand        :: "[bool, bool] => bool"         (infixr ".." 28)
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  Dif        :: "[bool, bool] => bool"         (infixl ":-" 29)
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(* G-formulas (goals):     G ::= A | G & G | G | G | ? x. G
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                               | True | !x. G | D => G                  *)
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(*Dand'         :: "[bool, bool] => bool"         (infixr "," 35)*)
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  Dimp          :: "[bool, bool] => bool"         (infixr "=>" 27)
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translations
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  "D :- G"      =>      "G --> D"
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  "D1 .. D2"    =>      "D1 & D2"
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(*"G1 , G2"     =>      "G1 & G2"*)
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  "D => G"      =>      "D --> G"
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end