author  wenzelm 
Fri, 18 Aug 2017 13:55:05 +0200  
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parent 65460  fe4cf0de13cb 
child 67621  8f93d878f855 
permissions  rwrr 
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(* Title: Pure/context.ML 
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Author: Markus Wenzel, TU Muenchen 

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Generic theory contexts with unique identity, arbitrarily typed data, 
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monotonic development graph and history support. Generic proof 
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contexts with arbitrarily typed data. 
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Firm naming conventions: 
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thy, thy', thy1, thy2: theory 
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ctxt, ctxt', ctxt1, ctxt2: Proof.context 
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context: Context.generic 
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*) 
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signature BASIC_CONTEXT = 

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sig 

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type theory 
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exception THEORY of string * theory list 
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structure Proof: sig type context end 
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structure Proof_Context: 
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sig 
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val theory_of: Proof.context > theory 
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val init_global: theory > Proof.context 
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val get_global: theory > string > Proof.context 
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end 
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end; 
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signature CONTEXT = 

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sig 

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include BASIC_CONTEXT 

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(*theory context*) 
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type theory_id 
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val theory_id: theory > theory_id 

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val timing: bool Unsynchronized.ref 
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val parents_of: theory > theory list 
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val ancestors_of: theory > theory list 
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val theory_id_long_name: theory_id > string 
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val theory_id_name: theory_id > string 
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val theory_long_name: theory > string 
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val theory_name: theory > string 
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val PureN: string 
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val pretty_thy: theory > Pretty.T 
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val pretty_abbrev_thy: theory > Pretty.T 
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val get_theory: theory > string > theory 
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val this_theory: theory > string > theory 
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val eq_thy_id: theory_id * theory_id > bool 
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val eq_thy: theory * theory > bool 
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val proper_subthy_id: theory_id * theory_id > bool 
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val proper_subthy: theory * theory > bool 

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val subthy_id: theory_id * theory_id > bool 

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val subthy: theory * theory > bool 
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val finish_thy: theory > theory 
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val begin_thy: string > theory list > theory 
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(*proof context*) 
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val raw_transfer: theory > Proof.context > Proof.context 
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(*certificate*) 
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datatype certificate = Certificate of theory  Certificate_Id of theory_id 
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val certificate_theory: certificate > theory 
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val certificate_theory_id: certificate > theory_id 
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val eq_certificate: certificate * certificate > bool 
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val join_certificate: certificate * certificate > certificate 
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(*generic context*) 
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datatype generic = Theory of theory  Proof of Proof.context 
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val cases: (theory > 'a) > (Proof.context > 'a) > generic > 'a 
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val mapping: (theory > theory) > (Proof.context > Proof.context) > generic > generic 
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val mapping_result: (theory > 'a * theory) > (Proof.context > 'a * Proof.context) > 
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generic > 'a * generic 
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val the_theory: generic > theory 
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val the_proof: generic > Proof.context 
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val map_theory: (theory > theory) > generic > generic 
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val map_proof: (Proof.context > Proof.context) > generic > generic 
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val map_theory_result: (theory > 'a * theory) > generic > 'a * generic 
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val map_proof_result: (Proof.context > 'a * Proof.context) > generic > 'a * generic 
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val theory_map: (generic > generic) > theory > theory 
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val proof_map: (generic > generic) > Proof.context > Proof.context 
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val theory_of: generic > theory (*total*) 
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val proof_of: generic > Proof.context (*total*) 
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(*thread data*) 
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val get_generic_context: unit > generic option 
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val put_generic_context: generic option > unit 

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val setmp_generic_context: generic option > ('a > 'b) > 'a > 'b 

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val the_generic_context: unit > generic 
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val the_global_context: unit > theory 

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val the_local_context: unit > Proof.context 

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val >> : (generic > generic) > unit 
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val >>> : (generic > 'a * generic) > 'a 

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end; 
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signature PRIVATE_CONTEXT = 
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sig 
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include CONTEXT 
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structure Theory_Data: 
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sig 
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val declare: Position.T > Any.T > (Any.T > Any.T) > 
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(theory * theory > Any.T * Any.T > Any.T) > serial 
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val get: serial > (Any.T > 'a) > theory > 'a 
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val put: serial > ('a > Any.T) > 'a > theory > theory 
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end 
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structure Proof_Data: 
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sig 
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val declare: (theory > Any.T) > serial 
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val get: serial > (Any.T > 'a) > Proof.context > 'a 
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val put: serial > ('a > Any.T) > 'a > Proof.context > Proof.context 
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end 
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end; 
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structure Context: PRIVATE_CONTEXT = 
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struct 
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(*** theory context ***) 
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(*private copy avoids potential conflict of table exceptions*) 
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structure Datatab = Table(type key = int val ord = int_ord); 
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(** datatype theory **) 
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datatype theory_id = 
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Theory_Id of 

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(*identity*) 
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{id: serial, (*identifier*) 
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ids: Inttab.set} * (*cumulative identifiers  symbolic body content*) 
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(*history*) 
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{name: string, (*official theory name*) 
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stage: int}; (*counter for anonymous updates*) 
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datatype theory = 
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Theory of 

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theory_id * 

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(*ancestry*) 

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{parents: theory list, (*immediate predecessors*) 

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ancestors: theory list} * (*all predecessors  canonical reverse order*) 

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(*data*) 

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Any.T Datatab.table; (*body content*) 

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exception THEORY of string * theory list; 
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fun rep_theory_id (Theory_Id args) = args; 
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fun rep_theory (Theory args) = args; 
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val theory_id = #1 o rep_theory; 
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val identity_of_id = #1 o rep_theory_id; 

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val identity_of = identity_of_id o theory_id; 

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val history_of_id = #2 o rep_theory_id; 

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val history_of = history_of_id o theory_id; 

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val ancestry_of = #2 o rep_theory; 

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val data_of = #3 o rep_theory; 

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fun make_identity id ids = {id = id, ids = ids}; 
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fun make_history name stage = {name = name, stage = stage}; 
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fun make_ancestry parents ancestors = {parents = parents, ancestors = ancestors}; 
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val theory_id_long_name = #name o history_of_id; 
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val theory_id_name = Long_Name.base_name o theory_id_long_name; 
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val theory_long_name = #name o history_of; 
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val theory_name = Long_Name.base_name o theory_long_name; 
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val parents_of = #parents o ancestry_of; 
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val ancestors_of = #ancestors o ancestry_of; 
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(* names *) 
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val PureN = "Pure"; 
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val finished = ~1; 
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fun display_name thy_id = 
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let val {name, stage} = history_of_id thy_id; 
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in if stage = finished then name else name ^ ":" ^ string_of_int stage end; 
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fun display_names thy = 
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let 
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val name = display_name (theory_id thy); 
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val ancestor_names = map theory_name (ancestors_of thy); 
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in rev (name :: ancestor_names) end; 
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val pretty_thy = Pretty.str_list "{" "}" o display_names; 
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val _ = ML_system_pp (fn _ => fn _ => Pretty.to_polyml o pretty_thy); 
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fun pretty_abbrev_thy thy = 
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let 
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val names = display_names thy; 
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val n = length names; 
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val abbrev = if n > 5 then "..." :: List.drop (names, n  5) else names; 
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in Pretty.str_list "{" "}" abbrev end; 
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fun get_theory thy name = 
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if theory_name thy <> name then 
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(case find_first (fn thy' => theory_name thy' = name) (ancestors_of thy) of 
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SOME thy' => thy' 
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 NONE => error ("Unknown ancestor theory " ^ quote name)) 
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else if #stage (history_of thy) = finished then thy 
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else error ("Unfinished theory " ^ quote name); 
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fun this_theory thy name = 
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if theory_name thy = name then thy 
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else get_theory thy name; 
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(* build ids *) 
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fun insert_id id ids = Inttab.update (id, ()) ids; 
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fun merge_ids 
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(Theory (Theory_Id ({id = id1, ids = ids1, ...}, _), _, _)) 
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(Theory (Theory_Id ({id = id2, ids = ids2, ...}, _), _, _)) = 

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Inttab.merge (K true) (ids1, ids2) 
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> insert_id id1 
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> insert_id id2; 
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16533  213 
(* equality and inclusion *) 
214 

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val eq_thy_id = op = o apply2 (#id o identity_of_id); 
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val eq_thy = op = o apply2 (#id o identity_of); 
16533  217 

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fun proper_subthy_id (Theory_Id ({id, ...}, _), Theory_Id ({ids, ...}, _)) = Inttab.defined ids id; 
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val proper_subthy = proper_subthy_id o apply2 theory_id; 

16533  220 

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fun subthy_id p = eq_thy_id p orelse proper_subthy_id p; 
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val subthy = subthy_id o apply2 theory_id; 

16533  223 

224 

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(* consistent ancestors *) 
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fun eq_thy_consistent (thy1, thy2) = 
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eq_thy (thy1, thy2) orelse 
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(theory_name thy1 = theory_name thy2 andalso 
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raise THEORY ("Duplicate theory name", [thy1, thy2])); 
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fun extend_ancestors thy thys = 
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if member eq_thy_consistent thys thy then 
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raise THEORY ("Duplicate theory node", thy :: thys) 
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else thy :: thys; 
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val merge_ancestors = merge eq_thy_consistent; 
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(** theory data **) 
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(* data kinds and access methods *) 
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val timing = Unsynchronized.ref false; 
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local 
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type kind = 
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{pos: Position.T, 
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empty: Any.T, 
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extend: Any.T > Any.T, 
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merge: theory * theory > Any.T * Any.T > Any.T}; 
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val kinds = Synchronized.var "Theory_Data" (Datatab.empty: kind Datatab.table); 
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fun invoke name f k x = 
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(case Datatab.lookup (Synchronized.value kinds) k of 
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SOME kind => 
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if ! timing andalso name <> "" then 
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Timing.cond_timeit true ("Theory_Data." ^ name ^ Position.here (#pos kind)) 
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(fn () => f kind x) 
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else f kind x 
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 NONE => raise Fail "Invalid theory data identifier"); 
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in 
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fun invoke_empty k = invoke "" (K o #empty) k (); 
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val invoke_extend = invoke "extend" #extend; 
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fun invoke_merge thys = invoke "merge" (fn kind => #merge kind thys); 
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fun declare_theory_data pos empty extend merge = 
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let 
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val k = serial (); 
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val kind = {pos = pos, empty = empty, extend = extend, merge = merge}; 
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val _ = Synchronized.change kinds (Datatab.update (k, kind)); 
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in k end; 
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val extend_data = Datatab.map invoke_extend; 
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fun merge_data thys = Datatab.join (invoke_merge thys) o apply2 extend_data; 
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end; 
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(** build theories **) 
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(* primitives *) 
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60947  290 
fun create_thy ids history ancestry data = 
291 
Theory (Theory_Id (make_identity (serial ()) ids, history), ancestry, data); 

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292 

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val pre_pure_thy = 
60947  294 
create_thy Inttab.empty (make_history PureN 0) (make_ancestry [] []) Datatab.empty; 
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local 
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297 

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fun change_thy finish f thy = 
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let 
60947  300 
val Theory (Theory_Id ({id, ids}, {name, stage}), ancestry, data) = thy; 
301 
val (ancestry', data') = 

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if stage = finished then 
60947  303 
(make_ancestry [thy] (extend_ancestors thy (ancestors_of thy)), extend_data data) 
304 
else (ancestry, data); 

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val history' = {name = name, stage = if finish then finished else stage + 1}; 
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val ids' = insert_id id ids; 
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val data'' = f data'; 
60947  308 
in create_thy ids' history' ancestry' data'' end; 
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in 
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val update_thy = change_thy false; 
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val extend_thy = update_thy I; 
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val finish_thy = change_thy true I; 
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end; 
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(* named theory nodes *) 
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320 

61044
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local 
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322 

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fun merge_thys (thy1, thy2) = 
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let 
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325 
val ids = merge_ids thy1 thy2; 
60947  326 
val history = make_history "" 0; 
26957  327 
val ancestry = make_ancestry [] []; 
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328 
val data = merge_data (thy1, thy2) (data_of thy1, data_of thy2); 
60947  329 
in create_thy ids history ancestry data end; 
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330 

16533  331 
fun maximal_thys thys = 
28617  332 
thys > filter_out (fn thy => exists (fn thy' => proper_subthy (thy, thy')) thys); 
16533  333 

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334 
in 
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335 

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336 
fun begin_thy name imports = 
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337 
if name = "" then error ("Bad theory name: " ^ quote name) 
24369  338 
else 
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339 
let 
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340 
val parents = maximal_thys (distinct eq_thy imports); 
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341 
val ancestors = 
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342 
Library.foldl merge_ancestors ([], map ancestors_of parents) 
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343 
> fold extend_ancestors parents; 
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344 

60947  345 
val Theory (Theory_Id ({ids, ...}, _), _, data) = 
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346 
(case parents of 
48638  347 
[] => error "Missing theory imports" 
16533  348 
 [thy] => extend_thy thy 
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349 
 thy :: thys => Library.foldl merge_thys (thy, thys)); 
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350 

60947  351 
val history = make_history name 0; 
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352 
val ancestry = make_ancestry parents ancestors; 
60947  353 
in create_thy ids history ancestry data end; 
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354 

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355 
end; 
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356 

16489
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357 

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358 
(* theory data *) 
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359 

33033  360 
structure Theory_Data = 
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361 
struct 
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362 

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363 
val declare = declare_theory_data; 
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364 

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365 
fun get k dest thy = 
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366 
(case Datatab.lookup (data_of thy) k of 
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367 
SOME x => x 
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368 
 NONE => invoke_empty k) > dest; 
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369 

52696
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370 
fun put k mk x = update_thy (Datatab.update (k, mk x)); 
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371 

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372 
end; 
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373 

7eb6b6cbd166
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374 

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375 

16533  376 
(*** proof context ***) 
377 

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378 
(* datatype Proof.context *) 
17060
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379 

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380 
structure Proof = 
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381 
struct 
52788  382 
datatype context = Context of Any.T Datatab.table * theory; 
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383 
end; 
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384 

16533  385 

386 
(* proof data kinds *) 

387 

388 
local 

389 

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390 
val kinds = Synchronized.var "Proof_Data" (Datatab.empty: (theory > Any.T) Datatab.table); 
16533  391 

59163  392 
fun init_data thy = 
393 
Synchronized.value kinds > Datatab.map (fn _ => fn init => init thy); 

16533  394 

59163  395 
fun init_new_data thy = 
396 
Synchronized.value kinds > Datatab.fold (fn (k, init) => fn data => 

397 
if Datatab.defined data k then data 

398 
else Datatab.update (k, init thy) data); 

22847
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399 

59163  400 
fun init_fallback k thy = 
401 
(case Datatab.lookup (Synchronized.value kinds) k of 

402 
SOME init => init thy 

403 
 NONE => raise Fail "Invalid proof data identifier"); 

16533  404 

405 
in 

406 

52788  407 
fun raw_transfer thy' (Proof.Context (data, thy)) = 
24141
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408 
let 
52682  409 
val _ = subthy (thy, thy') orelse error "Cannot transfer proof context: not a super theory"; 
59163  410 
val data' = init_new_data thy' data; 
52788  411 
in Proof.Context (data', thy') end; 
22847
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412 

42360  413 
structure Proof_Context = 
33031
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414 
struct 
59163  415 
fun theory_of (Proof.Context (_, thy)) = thy; 
52788  416 
fun init_global thy = Proof.Context (init_data thy, thy); 
51686  417 
fun get_global thy name = init_global (get_theory thy name); 
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418 
end; 
16533  419 

33033  420 
structure Proof_Data = 
16533  421 
struct 
422 

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423 
fun declare init = 
16533  424 
let 
425 
val k = serial (); 

43684  426 
val _ = Synchronized.change kinds (Datatab.update (k, init)); 
16533  427 
in k end; 
428 

59163  429 
fun get k dest (Proof.Context (data, thy)) = 
430 
(case Datatab.lookup data k of 

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changeset

431 
SOME x => x 
59163  432 
 NONE => init_fallback k thy) > dest; 
16533  433 

59163  434 
fun put k mk x (Proof.Context (data, thy)) = 
435 
Proof.Context (Datatab.update (k, mk x) data, thy); 

16533  436 

437 
end; 

438 

439 
end; 

440 

441 

18632  442 

61044
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443 
(*** theory certificate ***) 
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444 

b7af255dd200
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445 
datatype certificate = Certificate of theory  Certificate_Id of theory_id; 
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446 

b7af255dd200
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447 
fun certificate_theory (Certificate thy) = thy 
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448 
 certificate_theory (Certificate_Id thy_id) = 
61062  449 
error ("No content for theory certificate " ^ display_name thy_id); 
61044
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changeset

450 

b7af255dd200
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451 
fun certificate_theory_id (Certificate thy) = theory_id thy 
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452 
 certificate_theory_id (Certificate_Id thy_id) = thy_id; 
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453 

b7af255dd200
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454 
fun eq_certificate (Certificate thy1, Certificate thy2) = eq_thy (thy1, thy2) 
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455 
 eq_certificate (Certificate_Id thy_id1, Certificate_Id thy_id2) = eq_thy_id (thy_id1, thy_id2) 
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456 
 eq_certificate _ = false; 
b7af255dd200
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457 

b7af255dd200
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parents:
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458 
fun join_certificate (cert1, cert2) = 
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459 
let val (thy_id1, thy_id2) = apply2 certificate_theory_id (cert1, cert2) in 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
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diff
changeset

460 
if eq_thy_id (thy_id1, thy_id2) then (case cert1 of Certificate _ => cert1  _ => cert2) 
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461 
else if proper_subthy_id (thy_id2, thy_id1) then cert1 
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462 
else if proper_subthy_id (thy_id1, thy_id2) then cert2 
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more abstract theory certificate, which is not necessarily the full theory;
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diff
changeset

463 
else 
61045
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clarified exceptions: avoid interference of formal context failure with regular rule application failure (which is routinely handled in userspace);
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464 
error ("Cannot join unrelated theory certificates " ^ 
61062  465 
display_name thy_id1 ^ " and " ^ display_name thy_id2) 
61044
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
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60948
diff
changeset

466 
end; 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

467 

b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

468 

b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

469 

16533  470 
(*** generic context ***) 
471 

33031
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
wenzelm
parents:
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diff
changeset

472 
datatype generic = Theory of theory  Proof of Proof.context; 
18632  473 

474 
fun cases f _ (Theory thy) = f thy 

475 
 cases _ g (Proof prf) = g prf; 

16533  476 

19678  477 
fun mapping f g = cases (Theory o f) (Proof o g); 
21660  478 
fun mapping_result f g = cases (apsnd Theory o f) (apsnd Proof o g); 
19678  479 

23595
7ca68a2c8575
the_theory/proof: error instead of exception Fail;
wenzelm
parents:
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diff
changeset

480 
val the_theory = cases I (fn _ => error "Illtyped context: theory expected"); 
7ca68a2c8575
the_theory/proof: error instead of exception Fail;
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diff
changeset

481 
val the_proof = cases (fn _ => error "Illtyped context: proof expected") I; 
16533  482 

18731  483 
fun map_theory f = Theory o f o the_theory; 
484 
fun map_proof f = Proof o f o the_proof; 

485 

26486  486 
fun map_theory_result f = apsnd Theory o f o the_theory; 
487 
fun map_proof_result f = apsnd Proof o f o the_proof; 

488 

18731  489 
fun theory_map f = the_theory o f o Theory; 
490 
fun proof_map f = the_proof o f o Proof; 

18665  491 

42360  492 
val theory_of = cases I Proof_Context.theory_of; 
493 
val proof_of = cases Proof_Context.init_global I; 

16533  494 

22085
c138cfd500f7
ML context: full generic context, tuned signature;
wenzelm
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changeset

495 

c138cfd500f7
ML context: full generic context, tuned signature;
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21962
diff
changeset

496 

26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

497 
(** thread data **) 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

498 

62889  499 
local val generic_context_var = Thread_Data.var () : generic Thread_Data.var in 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

500 

62889  501 
fun get_generic_context () = Thread_Data.get generic_context_var; 
502 
val put_generic_context = Thread_Data.put generic_context_var; 

503 
fun setmp_generic_context opt_context = Thread_Data.setmp generic_context_var opt_context; 

62876  504 

505 
fun the_generic_context () = 

62889  506 
(case get_generic_context () of 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

507 
SOME context => context 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

508 
 _ => error "Unknown context"); 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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diff
changeset

509 

62876  510 
val the_global_context = theory_of o the_generic_context; 
511 
val the_local_context = proof_of o the_generic_context; 

26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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changeset

512 

26428  513 
end; 
514 

515 
fun >>> f = 

516 
let 

62876  517 
val (res, context') = f (the_generic_context ()); 
62889  518 
val _ = put_generic_context (SOME context'); 
26428  519 
in res end; 
520 

26421  521 
nonfix >>; 
26463  522 
fun >> f = >>> (fn context => ((), f context)); 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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changeset

523 

62889  524 
val _ = put_generic_context (SOME (Theory pre_pure_thy)); 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
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changeset

525 

6185  526 
end; 
527 

33031
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
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diff
changeset

528 
structure Basic_Context: BASIC_CONTEXT = Context; 
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
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diff
changeset

529 
open Basic_Context; 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
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15801
diff
changeset

530 

7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

531 

7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
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diff
changeset

532 

16533  533 
(*** typesafe interfaces for data declarations ***) 
534 

535 
(** theory data **) 

16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
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diff
changeset

536 

61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
61062
diff
changeset

537 
signature THEORY_DATA'_ARGS = 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

538 
sig 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

539 
type T 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

540 
val empty: T 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

541 
val extend: T > T 
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
61062
diff
changeset

542 
val merge: theory * theory > T * T > T 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

543 
end; 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

544 

34259
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

545 
signature THEORY_DATA_ARGS = 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

546 
sig 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

547 
type T 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

548 
val empty: T 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
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changeset

549 
val extend: T > T 
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550 
val merge: T * T > T 
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551 
end; 
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discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
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parents:
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changeset

552 

34253
5930c6391126
removed further remains of mutable theory data (cf. 25bd3ed2ac9f);
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553 
signature THEORY_DATA = 
16436
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554 
sig 
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555 
type T 
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556 
val get: theory > T 
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557 
val put: T > theory > theory 
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558 
val map: (T > T) > theory > theory 
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559 
end; 
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changeset

560 

61262
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tuned signature: eliminated pointless type Context.pretty;
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561 
functor Theory_Data'(Data: THEORY_DATA'_ARGS): THEORY_DATA = 
16436
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562 
struct 
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563 

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564 
type T = Data.T; 
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565 
exception Data of T; 
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added type theory: generic theory contexts with unique identity,
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566 

42818
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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567 
val kind = 
128cc195ced3
timing of Theory_Data operations, with implicit thread positions when functor is applied;
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568 
Context.Theory_Data.declare 
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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diff
changeset

569 
(Position.thread_data ()) 
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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changeset

570 
(Data Data.empty) 
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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changeset

571 
(fn Data x => Data (Data.extend x)) 
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changeset

572 
(fn thys => fn (Data x1, Data x2) => Data (Data.merge thys (x1, x2))); 
16436
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diff
changeset

573 

33033  574 
val get = Context.Theory_Data.get kind (fn Data x => x); 
575 
val put = Context.Theory_Data.put kind Data; 

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added type theory: generic theory contexts with unique identity,
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changeset

576 
fun map f thy = put (f (get thy)) thy; 
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diff
changeset

577 

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added type theory: generic theory contexts with unique identity,
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diff
changeset

578 
end; 
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diff
changeset

579 

33517
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modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents:
33033
diff
changeset

580 
functor Theory_Data(Data: THEORY_DATA_ARGS): THEORY_DATA = 
61262
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diff
changeset

581 
Theory_Data' 
34259
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

582 
( 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

583 
type T = Data.T; 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

584 
val empty = Data.empty; 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

585 
val extend = Data.extend; 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

586 
fun merge _ = Data.merge; 
2ba492b8b6e8
discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations  hard to get rid of);
wenzelm
parents:
34253
diff
changeset

587 
); 
33517
d064fa48f305
modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents:
33033
diff
changeset

588 

16533  589 

590 

591 
(** proof data **) 

592 

593 
signature PROOF_DATA_ARGS = 

594 
sig 

595 
type T 

596 
val init: theory > T 

597 
end; 

598 

599 
signature PROOF_DATA = 

600 
sig 

601 
type T 

33031
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
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diff
changeset

602 
val get: Proof.context > T 
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diff
changeset

603 
val put: T > Proof.context > Proof.context 
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diff
changeset

604 
val map: (T > T) > Proof.context > Proof.context 
16533  605 
end; 
606 

33517
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wenzelm
parents:
33033
diff
changeset

607 
functor Proof_Data(Data: PROOF_DATA_ARGS): PROOF_DATA = 
16533  608 
struct 
609 

610 
type T = Data.T; 

611 
exception Data of T; 

612 

33033  613 
val kind = Context.Proof_Data.declare (Data o Data.init); 
16533  614 

33033  615 
val get = Context.Proof_Data.get kind (fn Data x => x); 
616 
val put = Context.Proof_Data.put kind Data; 

16533  617 
fun map f prf = put (f (get prf)) prf; 
618 

619 
end; 

620 

18632  621 

622 

623 
(** generic data **) 

624 

625 
signature GENERIC_DATA_ARGS = 

626 
sig 

627 
type T 

628 
val empty: T 

629 
val extend: T > T 

33517
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modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents:
33033
diff
changeset

630 
val merge: T * T > T 
18632  631 
end; 
632 

633 
signature GENERIC_DATA = 

634 
sig 

635 
type T 

636 
val get: Context.generic > T 

637 
val put: T > Context.generic > Context.generic 

638 
val map: (T > T) > Context.generic > Context.generic 

639 
end; 

640 

33517
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modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents:
33033
diff
changeset

641 
functor Generic_Data(Data: GENERIC_DATA_ARGS): GENERIC_DATA = 
18632  642 
struct 
643 

33517
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wenzelm
parents:
33033
diff
changeset

644 
structure Thy_Data = Theory_Data(Data); 
d064fa48f305
modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents:
33033
diff
changeset

645 
structure Prf_Data = Proof_Data(type T = Data.T val init = Thy_Data.get); 
18632  646 

647 
type T = Data.T; 

648 

33033  649 
fun get (Context.Theory thy) = Thy_Data.get thy 
650 
 get (Context.Proof prf) = Prf_Data.get prf; 

18632  651 

33033  652 
fun put x (Context.Theory thy) = Context.Theory (Thy_Data.put x thy) 
653 
 put x (Context.Proof prf) = Context.Proof (Prf_Data.put x prf); 

18632  654 

655 
fun map f ctxt = put (f (get ctxt)) ctxt; 

656 

657 
end; 

658 

16533  659 
(*hide private interface*) 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
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diff
changeset

660 
structure Context: CONTEXT = Context; 