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src/Pure/morphism.ML

author | paulson |

Fri, 05 Oct 2007 09:59:03 +0200 | |

changeset 24854 | 0ebcd575d3c6 |

parent 24031 | e94e541346d7 |

child 28074 | 90adbbf03187 |

permissions | -rw-r--r-- |

filtering out some package theorems

(* Title: Pure/morphism.ML ID: $Id$ Author: Makarius Abstract morphisms on formal entities. *) infix 1 $> signature BASIC_MORPHISM = sig type morphism type declaration = morphism -> Context.generic -> Context.generic val $> : morphism * morphism -> morphism end signature MORPHISM = sig include BASIC_MORPHISM val var: morphism -> string * mixfix -> string * mixfix val name: morphism -> string -> string val typ: morphism -> typ -> typ val term: morphism -> term -> term val fact: morphism -> thm list -> thm list val thm: morphism -> thm -> thm val cterm: morphism -> cterm -> cterm val morphism: {name: string -> string, var: string * mixfix -> string * mixfix, typ: typ -> typ, term: term -> term, fact: thm list -> thm list} -> morphism val name_morphism: (string -> string) -> morphism val var_morphism: (string * mixfix -> string * mixfix) -> morphism val typ_morphism: (typ -> typ) -> morphism val term_morphism: (term -> term) -> morphism val fact_morphism: (thm list -> thm list) -> morphism val thm_morphism: (thm -> thm) -> morphism val identity: morphism val compose: morphism -> morphism -> morphism val transform: morphism -> (morphism -> 'a) -> morphism -> 'a val form: (morphism -> 'a) -> 'a end; structure Morphism: MORPHISM = struct datatype morphism = Morphism of {name: string -> string, var: string * mixfix -> string * mixfix, typ: typ -> typ, term: term -> term, fact: thm list -> thm list}; type declaration = morphism -> Context.generic -> Context.generic; fun name (Morphism {name, ...}) = name; fun var (Morphism {var, ...}) = var; fun typ (Morphism {typ, ...}) = typ; fun term (Morphism {term, ...}) = term; fun fact (Morphism {fact, ...}) = fact; val thm = singleton o fact; val cterm = Drule.cterm_rule o thm; val morphism = Morphism; fun name_morphism name = morphism {name = name, var = I, typ = I, term = I, fact = I}; fun var_morphism var = morphism {name = I, var = var, typ = I, term = I, fact = I}; fun typ_morphism typ = morphism {name = I, var = I, typ = typ, term = I, fact = I}; fun term_morphism term = morphism {name = I, var = I, typ = I, term = term, fact = I}; fun fact_morphism fact = morphism {name = I, var = I, typ = I, term = I, fact = fact}; fun thm_morphism thm = morphism {name = I, var = I, typ = I, term = I, fact = map thm}; val identity = morphism {name = I, var = I, typ = I, term = I, fact = I}; fun compose (Morphism {name = name1, var = var1, typ = typ1, term = term1, fact = fact1}) (Morphism {name = name2, var = var2, typ = typ2, term = term2, fact = fact2}) = morphism {name = name1 o name2, var = var1 o var2, typ = typ1 o typ2, term = term1 o term2, fact = fact1 o fact2}; fun phi1 $> phi2 = compose phi2 phi1; fun transform phi f = fn psi => f (phi $> psi); fun form f = f identity; end; structure BasicMorphism: BASIC_MORPHISM = Morphism; open BasicMorphism;