author  wenzelm 
Fri, 18 Mar 2016 16:26:35 +0100  
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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_name: theory_id > 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 thread_data: unit > generic option 
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val the_thread_data: unit > generic 
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val set_thread_data: generic option > unit 
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val setmp_thread_data: generic option > ('a > 'b) > 'a > 'b 
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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_name = #name o history_of_id; 
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val theory_name = #name o history_of; 
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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 _ = PolyML.addPrettyPrinter (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  206 
(* equality and inclusion *) 
207 

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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  210 

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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  213 

60947  214 
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  216 

217 

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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  283 
fun create_thy ids history ancestry data = 
284 
Theory (Theory_Id (make_identity (serial ()) ids, history), ancestry, data); 

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285 

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val pre_pure_thy = 
60947  287 
create_thy Inttab.empty (make_history PureN 0) (make_ancestry [] []) Datatab.empty; 
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local 
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290 

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fun change_thy finish f thy = 
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let 
60947  293 
val Theory (Theory_Id ({id, ids}, {name, stage}), ancestry, data) = thy; 
294 
val (ancestry', data') = 

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if stage = finished then 
60947  296 
(make_ancestry [thy] (extend_ancestors thy (ancestors_of thy)), extend_data data) 
297 
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  301 
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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local 
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315 

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fun merge_thys (thy1, thy2) = 
26957  317 
let 
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val ids = merge_ids thy1 thy2; 
60947  319 
val history = make_history "" 0; 
26957  320 
val ancestry = make_ancestry [] []; 
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val data = merge_data (thy1, thy2) (data_of thy1, data_of thy2); 
60947  322 
in create_thy ids history ancestry data end; 
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16533  324 
fun maximal_thys thys = 
28617  325 
thys > filter_out (fn thy => exists (fn thy' => proper_subthy (thy, thy')) thys); 
16533  326 

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in 
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fun begin_thy name imports = 
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immutable theory values with full stamp record of every update (increase of stamp size for HOL: 20000 > 100000, JinjaThreads: 65000 > 300000)  minimal measurable impact on inference kernel performance;
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330 
if name = "" then error ("Bad theory name: " ^ quote name) 
24369  331 
else 
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332 
let 
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333 
val parents = maximal_thys (distinct eq_thy imports); 
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334 
val ancestors = 
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335 
Library.foldl merge_ancestors ([], map ancestors_of parents) 
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336 
> fold extend_ancestors parents; 
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337 

60947  338 
val Theory (Theory_Id ({ids, ...}, _), _, data) = 
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339 
(case parents of 
48638  340 
[] => error "Missing theory imports" 
16533  341 
 [thy] => extend_thy thy 
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342 
 thy :: thys => Library.foldl merge_thys (thy, thys)); 
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343 

60947  344 
val history = make_history name 0; 
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345 
val ancestry = make_ancestry parents ancestors; 
60947  346 
in create_thy ids history ancestry data end; 
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347 

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348 
end; 
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349 

16489
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350 

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351 
(* theory data *) 
16436
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352 

33033  353 
structure Theory_Data = 
16489
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354 
struct 
f66ab8a4e98f
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355 

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356 
val declare = declare_theory_data; 
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357 

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358 
fun get k dest thy = 
34253
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359 
(case Datatab.lookup (data_of thy) k of 
22847
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360 
SOME x => x 
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361 
 NONE => invoke_empty k) > dest; 
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362 

52696
38466f4f3483
immutable theory values with full stamp record of every update (increase of stamp size for HOL: 20000 > 100000, JinjaThreads: 65000 > 300000)  minimal measurable impact on inference kernel performance;
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363 
fun put k mk x = update_thy (Datatab.update (k, mk x)); 
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364 

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365 
end; 
16436
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changeset

366 

7eb6b6cbd166
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367 

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368 

16533  369 
(*** proof context ***) 
370 

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371 
(* datatype Proof.context *) 
17060
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372 

33031
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373 
structure Proof = 
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374 
struct 
52788  375 
datatype context = Context of Any.T Datatab.table * theory; 
33031
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376 
end; 
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377 

16533  378 

379 
(* proof data kinds *) 

380 

381 
local 

382 

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383 
val kinds = Synchronized.var "Proof_Data" (Datatab.empty: (theory > Any.T) Datatab.table); 
16533  384 

59163  385 
fun init_data thy = 
386 
Synchronized.value kinds > Datatab.map (fn _ => fn init => init thy); 

16533  387 

59163  388 
fun init_new_data thy = 
389 
Synchronized.value kinds > Datatab.fold (fn (k, init) => fn data => 

390 
if Datatab.defined data k then data 

391 
else Datatab.update (k, init thy) data); 

22847
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392 

59163  393 
fun init_fallback k thy = 
394 
(case Datatab.lookup (Synchronized.value kinds) k of 

395 
SOME init => init thy 

396 
 NONE => raise Fail "Invalid proof data identifier"); 

16533  397 

398 
in 

399 

52788  400 
fun raw_transfer thy' (Proof.Context (data, thy)) = 
24141
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improved check_thy: produce a checked theory_ref (threadsafe version);
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changeset

401 
let 
52682  402 
val _ = subthy (thy, thy') orelse error "Cannot transfer proof context: not a super theory"; 
59163  403 
val data' = init_new_data thy' data; 
52788  404 
in Proof.Context (data', thy') end; 
22847
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405 

42360  406 
structure Proof_Context = 
33031
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407 
struct 
59163  408 
fun theory_of (Proof.Context (_, thy)) = thy; 
52788  409 
fun init_global thy = Proof.Context (init_data thy, thy); 
51686  410 
fun get_global thy name = init_global (get_theory thy name); 
33031
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411 
end; 
16533  412 

33033  413 
structure Proof_Data = 
16533  414 
struct 
415 

22847
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416 
fun declare init = 
16533  417 
let 
418 
val k = serial (); 

43684  419 
val _ = Synchronized.change kinds (Datatab.update (k, init)); 
16533  420 
in k end; 
421 

59163  422 
fun get k dest (Proof.Context (data, thy)) = 
423 
(case Datatab.lookup data k of 

22847
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parents:
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changeset

424 
SOME x => x 
59163  425 
 NONE => init_fallback k thy) > dest; 
16533  426 

59163  427 
fun put k mk x (Proof.Context (data, thy)) = 
428 
Proof.Context (Datatab.update (k, mk x) data, thy); 

16533  429 

430 
end; 

431 

432 
end; 

433 

434 

18632  435 

61044
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wenzelm
parents:
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diff
changeset

436 
(*** theory certificate ***) 
b7af255dd200
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changeset

437 

b7af255dd200
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438 
datatype certificate = Certificate of theory  Certificate_Id of theory_id; 
b7af255dd200
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diff
changeset

439 

b7af255dd200
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440 
fun certificate_theory (Certificate thy) = thy 
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441 
 certificate_theory (Certificate_Id thy_id) = 
61062  442 
error ("No content for theory certificate " ^ display_name thy_id); 
61044
b7af255dd200
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wenzelm
parents:
60948
diff
changeset

443 

b7af255dd200
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parents:
60948
diff
changeset

444 
fun certificate_theory_id (Certificate thy) = theory_id thy 
b7af255dd200
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parents:
60948
diff
changeset

445 
 certificate_theory_id (Certificate_Id thy_id) = thy_id; 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

446 

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

447 
fun eq_certificate (Certificate thy1, Certificate thy2) = eq_thy (thy1, thy2) 
b7af255dd200
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parents:
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diff
changeset

448 
 eq_certificate (Certificate_Id thy_id1, Certificate_Id thy_id2) = eq_thy_id (thy_id1, thy_id2) 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
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diff
changeset

449 
 eq_certificate _ = false; 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

450 

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

451 
fun join_certificate (cert1, cert2) = 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

452 
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;
wenzelm
parents:
60948
diff
changeset

453 
if eq_thy_id (thy_id1, thy_id2) then (case cert1 of Certificate _ => cert1  _ => cert2) 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

454 
else if proper_subthy_id (thy_id2, thy_id1) then cert1 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
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parents:
60948
diff
changeset

455 
else if proper_subthy_id (thy_id1, thy_id2) then cert2 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

456 
else 
61045
c7a7f063704a
clarified exceptions: avoid interference of formal context failure with regular rule application failure (which is routinely handled in userspace);
wenzelm
parents:
61044
diff
changeset

457 
error ("Cannot join unrelated theory certificates " ^ 
61062  458 
display_name thy_id1 ^ " and " ^ display_name thy_id2) 
61044
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

459 
end; 
b7af255dd200
more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents:
60948
diff
changeset

460 

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

461 

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

462 

16533  463 
(*** generic context ***) 
464 

33031
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
wenzelm
parents:
32784
diff
changeset

465 
datatype generic = Theory of theory  Proof of Proof.context; 
18632  466 

467 
fun cases f _ (Theory thy) = f thy 

468 
 cases _ g (Proof prf) = g prf; 

16533  469 

19678  470 
fun mapping f g = cases (Theory o f) (Proof o g); 
21660  471 
fun mapping_result f g = cases (apsnd Theory o f) (apsnd Proof o g); 
19678  472 

23595
7ca68a2c8575
the_theory/proof: error instead of exception Fail;
wenzelm
parents:
23355
diff
changeset

473 
val the_theory = cases I (fn _ => error "Illtyped context: theory expected"); 
7ca68a2c8575
the_theory/proof: error instead of exception Fail;
wenzelm
parents:
23355
diff
changeset

474 
val the_proof = cases (fn _ => error "Illtyped context: proof expected") I; 
16533  475 

18731  476 
fun map_theory f = Theory o f o the_theory; 
477 
fun map_proof f = Proof o f o the_proof; 

478 

26486  479 
fun map_theory_result f = apsnd Theory o f o the_theory; 
480 
fun map_proof_result f = apsnd Proof o f o the_proof; 

481 

18731  482 
fun theory_map f = the_theory o f o Theory; 
483 
fun proof_map f = the_proof o f o Proof; 

18665  484 

42360  485 
val theory_of = cases I Proof_Context.theory_of; 
486 
val proof_of = cases Proof_Context.init_global I; 

16533  487 

22085
c138cfd500f7
ML context: full generic context, tuned signature;
wenzelm
parents:
21962
diff
changeset

488 

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

489 

26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

490 
(** thread data **) 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

491 

003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

492 
local val tag = Universal.tag () : generic option Universal.tag in 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

493 

003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

494 
fun thread_data () = 
28122  495 
(case Thread.getLocal tag of 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

496 
SOME (SOME context) => SOME context 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

497 
 _ => NONE); 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

498 

003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

499 
fun the_thread_data () = 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

500 
(case thread_data () of 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

501 
SOME context => context 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

502 
 _ => error "Unknown context"); 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

503 

28122  504 
fun set_thread_data context = Thread.setLocal (tag, context); 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

505 
fun setmp_thread_data context = Library.setmp_thread_data tag (thread_data ()) context; 
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

506 

26428  507 
end; 
508 

509 
fun >>> f = 

510 
let 

26463  511 
val (res, context') = f (the_thread_data ()); 
512 
val _ = set_thread_data (SOME context'); 

26428  513 
in res end; 
514 

26421  515 
nonfix >>; 
26463  516 
fun >> f = >>> (fn context => ((), f context)); 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

517 

26428  518 
val _ = set_thread_data (SOME (Theory pre_pure_thy)); 
26413
003dd6155870
added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents:
24559
diff
changeset

519 

6185  520 
end; 
521 

33031
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
wenzelm
parents:
32784
diff
changeset

522 
structure Basic_Context: BASIC_CONTEXT = Context; 
b75c35574e04
backpatching of structure Proof and ProofContext  avoid odd aliases;
wenzelm
parents:
32784
diff
changeset

523 
open Basic_Context; 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

524 

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

525 

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

526 

16533  527 
(*** typesafe interfaces for data declarations ***) 
528 

529 
(** theory data **) 

16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

530 

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

531 
signature THEORY_DATA'_ARGS = 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

532 
sig 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

533 
type T 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

534 
val empty: T 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

535 
val extend: T > T 
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
61062
diff
changeset

536 
val merge: theory * theory > T * T > T 
16436
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

537 
end; 
7eb6b6cbd166
added type theory: generic theory contexts with unique identity,
wenzelm
parents:
15801
diff
changeset

538 

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

539 
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

540 
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

541 
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

542 
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);
wenzelm
parents:
34253
diff
changeset

543 
val extend: T > 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

544 
val merge: T * T > T 
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545 
end; 
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546 

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547 
signature THEORY_DATA = 
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548 
sig 
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549 
type T 
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550 
val get: theory > T 
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551 
val put: T > theory > theory 
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552 
val map: (T > T) > theory > theory 
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553 
end; 
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554 

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555 
functor Theory_Data'(Data: THEORY_DATA'_ARGS): THEORY_DATA = 
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556 
struct 
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557 

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558 
type T = Data.T; 
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559 
exception Data of T; 
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560 

42818
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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561 
val kind = 
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562 
Context.Theory_Data.declare 
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563 
(Position.thread_data ()) 
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timing of Theory_Data operations, with implicit thread positions when functor is applied;
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564 
(Data Data.empty) 
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565 
(fn Data x => Data (Data.extend x)) 
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566 
(fn thys => fn (Data x1, Data x2) => Data (Data.merge thys (x1, x2))); 
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567 

33033  568 
val get = Context.Theory_Data.get kind (fn Data x => x); 
569 
val put = Context.Theory_Data.put kind Data; 

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570 
fun map f thy = put (f (get thy)) thy; 
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571 

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572 
end; 
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changeset

573 

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

574 
functor Theory_Data(Data: THEORY_DATA_ARGS): THEORY_DATA = 
61262
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changeset

575 
Theory_Data' 
34259
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diff
changeset

576 
( 
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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parents:
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diff
changeset

577 
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);
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diff
changeset

578 
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:
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diff
changeset

579 
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);
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diff
changeset

580 
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

581 
); 
33517
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modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
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parents:
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diff
changeset

582 

16533  583 

584 

585 
(** proof data **) 

586 

587 
signature PROOF_DATA_ARGS = 

588 
sig 

589 
type T 

590 
val init: theory > T 

591 
end; 

592 

593 
signature PROOF_DATA = 

594 
sig 

595 
type T 

33031
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backpatching of structure Proof and ProofContext  avoid odd aliases;
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596 
val get: Proof.context > T 
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597 
val put: T > Proof.context > Proof.context 
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598 
val map: (T > T) > Proof.context > Proof.context 
16533  599 
end; 
600 

33517
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diff
changeset

601 
functor Proof_Data(Data: PROOF_DATA_ARGS): PROOF_DATA = 
16533  602 
struct 
603 

604 
type T = Data.T; 

605 
exception Data of T; 

606 

33033  607 
val kind = Context.Proof_Data.declare (Data o Data.init); 
16533  608 

33033  609 
val get = Context.Proof_Data.get kind (fn Data x => x); 
610 
val put = Context.Proof_Data.put kind Data; 

16533  611 
fun map f prf = put (f (get prf)) prf; 
612 

613 
end; 

614 

18632  615 

616 

617 
(** generic data **) 

618 

619 
signature GENERIC_DATA_ARGS = 

620 
sig 

621 
type T 

622 
val empty: T 

623 
val extend: T > T 

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diff
changeset

624 
val merge: T * T > T 
18632  625 
end; 
626 

627 
signature GENERIC_DATA = 

628 
sig 

629 
type T 

630 
val get: Context.generic > T 

631 
val put: T > Context.generic > Context.generic 

632 
val map: (T > T) > Context.generic > Context.generic 

633 
end; 

634 

33517
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diff
changeset

635 
functor Generic_Data(Data: GENERIC_DATA_ARGS): GENERIC_DATA = 
18632  636 
struct 
637 

33517
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wenzelm
parents:
33033
diff
changeset

638 
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

639 
structure Prf_Data = Proof_Data(type T = Data.T val init = Thy_Data.get); 
18632  640 

641 
type T = Data.T; 

642 

33033  643 
fun get (Context.Theory thy) = Thy_Data.get thy 
644 
 get (Context.Proof prf) = Prf_Data.get prf; 

18632  645 

33033  646 
fun put x (Context.Theory thy) = Context.Theory (Thy_Data.put x thy) 
647 
 put x (Context.Proof prf) = Context.Proof (Prf_Data.put x prf); 

18632  648 

649 
fun map f ctxt = put (f (get ctxt)) ctxt; 

650 

651 
end; 

652 

16533  653 
(*hide private interface*) 
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added type theory: generic theory contexts with unique identity,
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diff
changeset

654 
structure Context: CONTEXT = Context; 