author  ballarin 
Fri, 14 Nov 2003 14:35:55 +0100  
changeset 14257  a7ef3f7588c5 
parent 14174  f3cafd2929d5 
child 14287  f630017ed01c 
permissions  rwrr 
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(* Title: Pure/Isar/proof_context.ML 
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ID: $Id$ 

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Author: Markus Wenzel, TU Muenchen 

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License: GPL (GNU GENERAL PUBLIC LICENSE) 
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Proof context information. 

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*) 

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signature PROOF_CONTEXT = 

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sig 

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type context 

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type exporter 
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exception CONTEXT of string * context 
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val theory_of: context > theory 

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val sign_of: context > Sign.sg 

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val syntax_of: context > Syntax.syntax * string list * string list 
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val fixed_names_of: context > string list 
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val assumptions_of: context > (cterm list * exporter) list 

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val prems_of: context > thm list 
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val print_proof_data: theory > unit 
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val init: theory > context 
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val add_syntax: (string * typ option * mixfix option) list > context > context 
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val is_fixed: context > string > bool 
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val default_type: context > string > typ option 
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val used_types: context > string list 
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val read_typ: context > string > typ 
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val read_typ_no_norm: context > string > typ 
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val cert_typ: context > typ > typ 
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val cert_typ_no_norm: context > typ > typ 
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val get_skolem: context > string > string 
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val extern_skolem: context > term > term 
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val read_termTs: string list > context > (string * typ) list > term list * (indexname * typ) list 
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val read_termTs_env: (indexname > typ option) * (indexname > sort option) * string list > context > (string * typ) list > term list * (indexname * typ) list 
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val read_term: context > string > term 
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val read_prop: context > string > term 

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val read_prop_schematic: context > string > term 
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val read_terms: context > string list > term list 
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val read_termT_pats: context > (string * typ) list > term list 
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val read_term_pats: typ > context > string list > term list 

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val read_prop_pats: context > string list > term list 

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val cert_term: context > term > term 
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val cert_prop: context > term > term 

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val cert_term_pats: typ > context > term list > term list 
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val cert_prop_pats: context > term list > term list 

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val declare_term: term > context > context 
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val declare_terms: term list > context > context 

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val warn_extra_tfrees: context > context > context 
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val generalize: context > context > term list > term list 
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val find_free: term > string > term option 
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val export: bool > context > context > thm > thm Seq.seq 
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val export_standard: cterm list > context > context > thm > thm 
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val drop_schematic: indexname * term option > indexname * term option 
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val add_binds: (indexname * string option) list > context > context 

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val add_binds_i: (indexname * term option) list > context > context 

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val auto_bind_goal: term list > context > context 
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val auto_bind_facts: term list > context > context 

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val match_bind: bool > (string list * string) list > context > context 
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val match_bind_i: bool > (term list * term) list > context > context 
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val read_propp: context * (string * (string list * string list)) list list 
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> context * (term * (term list * term list)) list list 
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val cert_propp: context * (term * (term list * term list)) list list 
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> context * (term * (term list * term list)) list list 
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val read_propp_schematic: context * (string * (string list * string list)) list list 
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> context * (term * (term list * term list)) list list 

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val cert_propp_schematic: context * (term * (term list * term list)) list list 

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> context * (term * (term list * term list)) list list 

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val bind_propp: context * (string * (string list * string list)) list list 
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> context * (term list list * (context > context)) 
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val bind_propp_i: context * (term * (term list * term list)) list list 
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> context * (term list list * (context > context)) 
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val bind_propp_schematic: context * (string * (string list * string list)) list list 
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> context * (term list list * (context > context)) 

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val bind_propp_schematic_i: context * (term * (term list * term list)) list list 

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> context * (term list list * (context > context)) 

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val get_thm: context > string > thm 
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val get_thm_closure: context > string > thm 
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val get_thms: context > string > thm list 
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val get_thms_closure: context > string > thm list 
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val cond_extern: context > string > xstring 
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val qualified: bool > context > context 
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val restore_qualified: context > context > context 
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val hide_thms: bool > string list > context > context 
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val put_thm: string * thm > context > context 
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val put_thms: string * thm list > context > context 

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val put_thmss: (string * thm list) list > context > context 

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val reset_thms: string > context > context 
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val have_thmss: 
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((bstring * context attribute list) * (xstring * context attribute list) list) list > 
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context > context * (bstring * thm list) list 

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val have_thmss_i: 

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((bstring * context attribute list) * (thm list * context attribute list) list) list > 

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context > context * (bstring * thm list) list 

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val export_assume: exporter 
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val export_presume: exporter 
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val cert_def: context > term > string * term 
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val export_def: exporter 
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val assume: exporter 
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> ((string * context attribute list) * (string * (string list * string list)) list) list 
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> context > context * (bstring * thm list) list 
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val assume_i: exporter 
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> ((string * context attribute list) * (term * (term list * term list)) list) list 
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> context > context * (bstring * thm list) list 
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val read_vars: context * (string list * string option) > context * (string list * typ option) 
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val cert_vars: context * (string list * typ option) > context * (string list * typ option) 

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val fix: (string list * string option) list > context > context 
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val fix_i: (string list * typ option) list > context > context 
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val fix_direct: (string list * typ option) list > context > context 
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val add_fixes: (string * typ option * mixfix option) list > context > context 
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val fix_frees: term list > context > context 
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val bind_skolem: context > string list > term > term 
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val get_case: context > string > string option list > RuleCases.T 
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val add_cases: (string * RuleCases.T) list > context > context 
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val apply_case: RuleCases.T > context 
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> context * ((indexname * term option) list * (string * term list) list) 
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val pretty_term: context > term > Pretty.T 
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val pretty_typ: context > typ > Pretty.T 

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val pretty_sort: context > sort > Pretty.T 

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val pretty_thm: context > thm > Pretty.T 

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val pretty_thms: context > thm list > Pretty.T 

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val pretty_fact: context > string * thm list > Pretty.T 
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val string_of_term: context > term > string 
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val verbose: bool ref 
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val setmp_verbose: ('a > 'b) > 'a > 'b 

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val print_syntax: context > unit 
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val print_binds: context > unit 
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val print_lthms: context > unit 
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val print_cases: context > unit 
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val prems_limit: int ref 

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val pretty_asms: context > Pretty.T list 
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val pretty_context: context > Pretty.T list 
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val thms_containing_limit: int ref 
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val print_thms_containing: context > int option > string list > unit 

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val setup: (theory > theory) list 
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end; 

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signature PRIVATE_PROOF_CONTEXT = 
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sig 
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include PROOF_CONTEXT 

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val init_data: Object.kind > (theory > Object.T) * (context > Object.T > unit) 

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> theory > theory 

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val print_data: Object.kind > context > unit 

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val get_data: Object.kind > (Object.T > 'a) > context > 'a 

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val put_data: Object.kind > ('a > Object.T) > 'a > context > context 

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end; 

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structure ProofContext: PRIVATE_PROOF_CONTEXT = 
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struct 
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(** datatype context **) 

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type exporter = bool > cterm list > thm > thm Seq.seq; 
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datatype context = 
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Context of 

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{thy: theory, (*current theory*) 
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syntax: Syntax.syntax * string list * string list, (*syntax with structs and mixfixed*) 
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data: Object.T Symtab.table, (*user data*) 
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asms: 
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((cterm list * exporter) list * (*assumes: A ==> _*) 
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(string * thm list) list) * 
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(string * string) list, (*fixes: !!x. _*) 
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binds: (term * typ) option Vartab.table, (*term bindings*) 
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thms: bool * NameSpace.T * thm list option Symtab.table 
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* FactIndex.T, (*local thms*) 
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cases: (string * RuleCases.T) list, (*local contexts*) 
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defs: 
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typ Vartab.table * (*type constraints*) 
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sort Vartab.table * (*default sorts*) 
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string list * (*used type variables*) 
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term list Symtab.table}; (*type variable occurrences*) 
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exception CONTEXT of string * context; 

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fun make_context (thy, syntax, data, asms, binds, thms, cases, defs) = 
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Context {thy = thy, syntax = syntax, data = data, asms = asms, binds = binds, 
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thms = thms, cases = cases, defs = defs}; 
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fun map_context f (Context {thy, syntax, data, asms, binds, thms, cases, defs}) = 
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make_context (f (thy, syntax, data, asms, binds, thms, cases, defs)); 
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fun theory_of (Context {thy, ...}) = thy; 

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val sign_of = Theory.sign_of o theory_of; 

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fun syntax_of (Context {syntax, ...}) = syntax; 
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fun fixes_of (Context {asms = (_, fixes), ...}) = fixes; 
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val fixed_names_of = map #2 o fixes_of; 
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fun is_fixed ctxt x = exists (equal x o #2) (fixes_of ctxt); 
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fun is_known (ctxt as Context {defs = (types, _, _, _), ...}) x = 
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is_some (Vartab.lookup (types, (x, ~1))) orelse is_fixed ctxt x; 
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fun type_occs (Context {defs = (_, _, _, tab), ...}) = tab; 
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fun assumptions_of (Context {asms = ((asms, _), _), ...}) = asms; 

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fun prems_of (Context {asms = ((_, prems), _), ...}) = flat (map #2 prems); 

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(** user data **) 

200 

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(* errors *) 

202 

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fun of_theory thy = "\nof theory " ^ Sign.str_of_sg (Theory.sign_of thy); 

204 

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fun err_inconsistent kinds = 

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error ("Attempt to merge different versions of " ^ commas_quote kinds ^ " proof data"); 

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fun err_dup_init thy kind = 

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error ("Duplicate initialization of " ^ quote kind ^ " proof data" ^ of_theory thy); 

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fun err_undef ctxt kind = 

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raise CONTEXT ("Tried to access undefined " ^ quote kind ^ " proof data", ctxt); 

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fun err_uninit ctxt kind = 

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raise CONTEXT ("Tried to access uninitialized " ^ quote kind ^ " proof data" ^ 

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of_theory (theory_of ctxt), ctxt); 

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fun err_access ctxt kind = 

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raise CONTEXT ("Unauthorized access to " ^ quote kind ^ " proof data" ^ 

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of_theory (theory_of ctxt), ctxt); 

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222 

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(* data kind 'Isar/proof_data' *) 

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225 
structure ProofDataDataArgs = 

226 
struct 

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val name = "Isar/proof_data"; 

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type T = (Object.kind * ((theory > Object.T) * (context > Object.T > unit))) Symtab.table; 

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230 
val empty = Symtab.empty; 

6550  231 
val copy = I; 
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val prep_ext = I; 
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fun merge tabs = Symtab.merge (Object.eq_kind o pairself fst) tabs 

234 
handle Symtab.DUPS kinds => err_inconsistent kinds; 

235 
fun print _ tab = Pretty.writeln (Pretty.strs (map #1 (Symtab.dest tab))); 

236 
end; 

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238 
structure ProofDataData = TheoryDataFun(ProofDataDataArgs); 

239 
val print_proof_data = ProofDataData.print; 

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241 

242 
(* init proof data *) 

243 

244 
fun init_data kind meths thy = 

245 
let 

246 
val name = Object.name_of_kind kind; 

247 
val tab = Symtab.update_new ((name, (kind, meths)), ProofDataData.get thy) 

248 
handle Symtab.DUP _ => err_dup_init thy name; 

249 
in thy > ProofDataData.put tab end; 

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252 
(* access data *) 

253 

254 
fun lookup_data (ctxt as Context {data, ...}) kind = 

255 
let 

256 
val thy = theory_of ctxt; 

257 
val name = Object.name_of_kind kind; 

258 
in 

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(case Symtab.lookup (ProofDataData.get thy, name) of 

260 
Some (k, meths) => 

261 
if Object.eq_kind (kind, k) then 

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(case Symtab.lookup (data, name) of 

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Some x => (x, meths) 

264 
 None => err_undef ctxt name) 

265 
else err_access ctxt name 

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 None => err_uninit ctxt name) 

267 
end; 

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269 
fun get_data kind f ctxt = 

270 
let val (x, _) = lookup_data ctxt kind 

271 
in f x handle Match => Object.kind_error kind end; 

272 

273 
fun print_data kind ctxt = 

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let val (x, (_, prt)) = lookup_data ctxt kind 

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in prt ctxt x end; 

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fun put_data kind f x ctxt = 

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(lookup_data ctxt kind; 
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map_context (fn (thy, syntax, data, asms, binds, thms, cases, defs) => 
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(thy, syntax, Symtab.update ((Object.name_of_kind kind, f x), data), 
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asms, binds, thms, cases, defs)) ctxt); 
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283 

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(* init context *) 

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5874  286 
fun init thy = 
287 
let val data = Symtab.map (fn (_, (f, _)) => f thy) (ProofDataData.get thy) in 

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make_context (thy, (Theory.syn_of thy, [], []), data, (([], []), []), Vartab.empty, 
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(false, NameSpace.empty, Symtab.empty, FactIndex.empty), [], 
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(Vartab.empty, Vartab.empty, [], Symtab.empty)) 
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end; 
292 

293 

8096  294 

12093  295 
(** local syntax **) 
296 

297 
val fixedN = "\\<^fixed>"; 

298 
val structN = "\\<^struct>"; 

299 

12100  300 
fun the_struct structs i = 
301 
if 1 <= i andalso i <= length structs then Library.nth_elem (i  1, structs) 

302 
else raise ERROR_MESSAGE ("Illegal reference to implicit structure #" ^ string_of_int i); 

303 

304 

305 
(* print (ast) translations *) 

306 

307 
fun index_tr' 1 = Syntax.const "_noindex" 

308 
 index_tr' i = Syntax.const "_index" $ Syntax.const (Library.string_of_int i); 

309 

310 
fun context_tr' ctxt = 

311 
let 

312 
val (_, structs, mixfixed) = syntax_of ctxt; 

313 

314 
fun tr' (t $ u) = tr' t $ tr' u 

315 
 tr' (Abs (x, T, t)) = Abs (x, T, tr' t) 

316 
 tr' (t as Free (x, T)) = 

317 
let val i = Library.find_index (equal x) structs + 1 in 

318 
if 1 <= i andalso i <= 9 then Syntax.const "_struct" $ index_tr' i 

319 
else if x mem_string mixfixed then Const (fixedN ^ x, T) 

320 
else t 

321 
end 

322 
 tr' a = a; 

323 
in tr' end; 

324 

325 
fun index_ast_tr' structs s = 

326 
(case Syntax.read_nat s of 

327 
Some i => Syntax.Variable (the_struct structs i handle ERROR_MESSAGE _ => raise Match) 

328 
 None => raise Match); 

329 

330 
fun struct_ast_tr' structs [Syntax.Constant "_noindex"] = 

331 
index_ast_tr' structs "1" 

332 
 struct_ast_tr' structs [Syntax.Appl [Syntax.Constant "_index", Syntax.Constant s]] = 

333 
index_ast_tr' structs s 

334 
 struct_ast_tr' _ _ = raise Match; 

335 

336 

337 
(* parse translations *) 

338 

339 
fun fixed_tr x = (fixedN ^ x, curry Term.list_comb (Syntax.free x)); 

340 

341 
fun index_tr (Const ("_noindex", _)) = 1 

342 
 index_tr (t as (Const ("_index", _) $ Const (s, _))) = 

343 
(case Syntax.read_nat s of Some n => n  None => raise TERM ("index_tr", [t])) 

344 
 index_tr t = raise TERM ("index_tr", [t]); 

345 

346 
fun struct_tr structs (idx :: ts) = Syntax.free (the_struct structs (index_tr idx)) 

347 
 struct_tr _ ts = raise TERM ("struct_tr", ts); 

348 

12093  349 

12576
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added add_fixes: derives mssing type scheme from mixfix;
wenzelm
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diff
changeset

350 
(* add syntax *) 
9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
wenzelm
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diff
changeset

351 

9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
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diff
changeset

352 
fun mixfix_type mx = replicate (Syntax.mixfix_args mx) TypeInfer.logicT > TypeInfer.logicT; 
12093  353 

354 
local 

355 

12576
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added add_fixes: derives mssing type scheme from mixfix;
wenzelm
parents:
12550
diff
changeset

356 
fun mixfix x None mx = (fixedN ^ x, mixfix_type mx, mx) 
12093  357 
 mixfix x (Some T) mx = (fixedN ^ x, T, mx); 
358 

359 
fun prep_mixfix (_, _, None) = None 

360 
 prep_mixfix (x, opt_T, Some mx) = Some (mixfix x opt_T mx); 

361 

362 
fun prep_mixfix' (_, _, None) = None 

363 
 prep_mixfix' (x, _, Some Syntax.NoSyn) = None 

12863  364 
 prep_mixfix' (x, opt_T, _) = Some (x, mixfix x opt_T (Syntax.literal x)); 
12093  365 

366 
fun prep_struct (x, _, None) = Some x 

367 
 prep_struct _ = None; 

368 

369 
in 

370 

371 
fun add_syntax decls = 

372 
map_context (fn (thy, (syn, structs, mixfixed), data, asms, binds, thms, cases, defs) => 

373 
let 

374 
val structs' = structs @ mapfilter prep_struct decls; 

375 
val mxs = mapfilter prep_mixfix decls; 

376 
val (fixed, mxs_output) = Library.split_list (mapfilter prep_mixfix' decls); 

377 
val trs = map fixed_tr fixed; 

378 
val syn' = syn 

379 
> Syntax.extend_const_gram ("", false) mxs_output 

380 
> Syntax.extend_const_gram ("", true) mxs 

381 
> Syntax.extend_trfuns ([], trs, [], []); 

382 
in (thy, (syn', structs', fixed @ mixfixed), data, asms, binds, thms, cases, defs) end) 

383 

384 
fun syn_of (Context {syntax = (syn, structs, _), ...}) = 

12100  385 
syn > Syntax.extend_trfuns 
386 
([], [("_struct", struct_tr structs)], [], [("_struct", struct_ast_tr' structs)]); 

12093  387 

388 
end; 

389 

390 

391 

7663  392 
(** default sorts and types **) 
393 

12291  394 
fun def_sort (Context {defs = (_, sorts, _, _), ...}) xi = Vartab.lookup (sorts, xi); 
7663  395 

12291  396 
fun def_type (Context {binds, defs = (types, _, _, _), ...}) is_pat xi = 
7663  397 
(case Vartab.lookup (types, xi) of 
398 
None => 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

399 
if is_pat then None else 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
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parents:
8462
diff
changeset

400 
(case Vartab.lookup (binds, xi) of 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
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parents:
8462
diff
changeset

401 
Some (Some (_, T)) => Some (TypeInfer.polymorphicT T) 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

402 
 _ => None) 
7663  403 
 some => some); 
404 

12504  405 
fun default_type (Context {defs = (types, _, _, _), ...}) x = Vartab.lookup (types, (x, ~1)); 
406 
fun used_types (Context {defs = (_, _, used, _), ...}) = used; 

12414  407 

7663  408 

5819  409 

410 
(** prepare types **) 

411 

9504  412 
local 
413 

414 
fun read_typ_aux read ctxt s = 

12093  415 
transform_error (read (syn_of ctxt) (sign_of ctxt, def_sort ctxt)) s 
7663  416 
handle ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt); 
5819  417 

10554  418 
fun cert_typ_aux cert ctxt raw_T = 
419 
cert (sign_of ctxt) raw_T 

420 
handle TYPE (msg, _, _) => raise CONTEXT (msg, ctxt); 

9504  421 

422 
in 

423 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

424 
val read_typ = read_typ_aux Sign.read_typ'; 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

425 
val read_typ_no_norm = read_typ_aux Sign.read_typ_no_norm'; 
11925  426 
val cert_typ = cert_typ_aux Sign.certify_typ; 
9504  427 
val cert_typ_no_norm = cert_typ_aux Sign.certify_typ_no_norm; 
428 

429 
end; 

430 

5819  431 

7679  432 
(* internalize Skolem constants *) 
433 

10583  434 
fun lookup_skolem ctxt x = assoc (fixes_of ctxt, x); 
435 
fun get_skolem ctxt x = if_none (lookup_skolem ctxt x) x; 

7679  436 

12504  437 
fun no_skolem internal ctxt x = 
9291
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

438 
if can Syntax.dest_skolem x then 
7679  439 
raise CONTEXT ("Illegal reference to internal Skolem constant: " ^ quote x, ctxt) 
12504  440 
else if not internal andalso can Syntax.dest_internal x then 
9291
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

441 
raise CONTEXT ("Illegal reference to internal variable: " ^ quote x, ctxt) 
7679  442 
else x; 
443 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

444 
fun intern_skolem ctxt env = 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

445 
(* env contains names that are not to be internalised *) 
7679  446 
let 
447 
fun intern (t as Free (x, T)) = 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

448 
(case env (x, ~1) of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

449 
Some _ => t 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

450 
 None => (case lookup_skolem ctxt (no_skolem false ctxt x) of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

451 
Some x' => Free (x', T) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

452 
 None => t)) 
7679  453 
 intern (t $ u) = intern t $ intern u 
454 
 intern (Abs (x, T, t)) = Abs (x, T, intern t) 

455 
 intern a = a; 

456 
in intern end; 

457 

458 

9133  459 
(* externalize Skolem constants  for printing purposes only *) 
460 

461 
fun extern_skolem ctxt = 

462 
let 

463 
val rev_fixes = map Library.swap (fixes_of ctxt); 

464 

465 
fun extern (t as Free (x, T)) = 

466 
(case assoc (rev_fixes, x) of 

10583  467 
Some x' => Free (if lookup_skolem ctxt x' = Some x then x' else NameSpace.hidden x', T) 
9133  468 
 None => t) 
469 
 extern (t $ u) = extern t $ extern u 

470 
 extern (Abs (x, T, t)) = Abs (x, T, extern t) 

471 
 extern a = a; 

472 
in extern end 

473 

8096  474 

5819  475 
(** prepare terms and propositions **) 
476 

477 
(* 

478 
(1) read / certify wrt. signature of context 

479 
(2) intern Skolem constants 

480 
(3) expand term bindings 

481 
*) 

482 

483 

484 
(* read / certify wrt. signature *) (*exception ERROR*) (*exception TERM*) 

485 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

486 
fun read_def_termTs freeze syn sg (types, sorts, used) sTs = 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

487 
Sign.read_def_terms' syn (sg, types, sorts) used freeze sTs; 
5874  488 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

489 
fun read_def_termT freeze syn sg defs sT = apfst hd (read_def_termTs freeze syn sg defs [sT]); 
5874  490 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

491 
fun read_term_sg freeze syn sg defs s = 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

492 
#1 (read_def_termT freeze syn sg defs (s, TypeInfer.logicT)); 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

493 

4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

494 
fun read_prop_sg freeze syn sg defs s = #1 (read_def_termT freeze syn sg defs (s, propT)); 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

495 

4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

496 
fun read_terms_sg freeze syn sg defs = 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

497 
#1 o read_def_termTs freeze syn sg defs o map (rpair TypeInfer.logicT); 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

498 

4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

499 
fun read_props_sg freeze syn sg defs = #1 o read_def_termTs freeze syn sg defs o map (rpair propT); 
5819  500 

501 

502 
fun cert_term_sg sg t = Thm.term_of (Thm.cterm_of sg t); 

503 

504 
fun cert_prop_sg sg tm = 

505 
let 

506 
val ctm = Thm.cterm_of sg tm; 

507 
val {t, T, ...} = Thm.rep_cterm ctm; 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

508 
in if T = propT then t else raise TERM ("Term not of type prop", [t]) end; 
5819  509 

510 

511 
(* norm_term *) 

512 

513 
(*beta normal form for terms (not eta normal form), chase variables in 

514 
bindings environment (code taken from Pure/envir.ML)*) 

515 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

516 
fun unifyT ctxt (T, U) = 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

517 
let val maxidx = Int.max (Term.maxidx_of_typ T, Term.maxidx_of_typ U) 
12530  518 
in #1 (Type.unify (Sign.tsig_of (sign_of ctxt)) (Vartab.empty, maxidx) (T, U)) end; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

519 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

520 
fun norm_term (ctxt as Context {binds, ...}) schematic allow_vars = 
5819  521 
let 
522 
(*raised when norm has no effect on a term, to do sharing instead of copying*) 

523 
exception SAME; 

524 

525 
fun norm (t as Var (xi, T)) = 

526 
(case Vartab.lookup (binds, xi) of 

7606  527 
Some (Some (u, U)) => 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

528 
let 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

529 
val env = unifyT ctxt (T, U) handle Type.TUNIFY => 
14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

530 
raise TYPE ("norm_term: illtyped variable assignment", [T, U], [t, u]); 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

531 
val u' = Term.subst_TVars_Vartab env u; 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

532 
in norm u' handle SAME => u' end 
10554  533 
 _ => 
534 
if schematic then raise SAME 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

535 
else if allow_vars then t 
10554  536 
else raise CONTEXT ("Unbound schematic variable: " ^ Syntax.string_of_vname xi, ctxt)) 
5819  537 
 norm (Abs (a, T, body)) = Abs (a, T, norm body) 
538 
 norm (Abs (_, _, body) $ t) = normh (subst_bound (t, body)) 

539 
 norm (f $ t) = 

540 
((case norm f of 

541 
Abs (_, _, body) => normh (subst_bound (t, body)) 

542 
 nf => nf $ (norm t handle SAME => t)) handle SAME => f $ norm t) 

543 
 norm _ = raise SAME 

544 
and normh t = norm t handle SAME => t 

545 
in normh end; 

546 

547 

6550  548 
(* dummy patterns *) 
549 

9540  550 
fun prepare_dummies t = #2 (Term.replace_dummy_patterns (1, t)); 
6762  551 

9540  552 
fun reject_dummies ctxt t = Term.no_dummy_patterns t 
553 
handle TERM _ => raise CONTEXT ("Illegal dummy pattern(s) in term", ctxt); 

6550  554 

555 

5819  556 
(* read terms *) 
557 

10554  558 
local 
559 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

560 
fun gen_read read app env_opt allow_vars is_pat dummies schematic 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

561 
(ctxt as Context {defs = (_, _, used, _), ...}) s = 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

562 
let 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

563 
(* Use environment of ctxt with the following modification: 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

564 
bindings in env_opt take precedence (needed for rule_tac) *) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

565 
val types = def_type ctxt is_pat; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

566 
val types' = case env_opt of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

567 
None => types 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

568 
 Some (env, _, _) => 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

569 
(fn ixn => case env ixn of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

570 
None => types ixn 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

571 
 some => some); 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

572 
val sorts = def_sort ctxt; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

573 
val sorts' = case env_opt of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

574 
None => sorts 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

575 
 Some (_, envT, _) => 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

576 
(fn ixn => case envT ixn of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

577 
None => sorts ixn 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

578 
 some => some); 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

579 
val used' = case env_opt of 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

580 
None => used 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

581 
 Some (_, _, used'') => used @ used''; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

582 
in 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

583 
(transform_error (read (syn_of ctxt) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

584 
(sign_of ctxt) (types', sorts', used')) s 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

585 
handle TERM (msg, _) => raise CONTEXT (msg, ctxt) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

586 
 ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt)) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

587 
> app (intern_skolem ctxt (case env_opt of None => K None  Some (env, _, _) => env)) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

588 
> app (if is_pat then I else norm_term ctxt schematic allow_vars) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

589 
> app (if is_pat then prepare_dummies 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

590 
else if dummies then I else reject_dummies ctxt) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

591 
end 
10554  592 
in 
593 

14257
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14174
diff
changeset

594 
(* For where attribute: 
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14174
diff
changeset

595 
Type vars generated by read will be distinct from those in "used". *) 
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14174
diff
changeset

596 
fun read_termTs used = 
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14174
diff
changeset

597 
gen_read (read_def_termTs false) (apfst o map) (Some (K None, K None, used)) false false false false; 
14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

598 
(* For rule_tac: 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

599 
takes extra environment (types, sorts and used type vars) *) 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

600 
fun read_termTs_env env = 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

601 
gen_read (read_def_termTs false) (apfst o map) (Some env) true false false false; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

602 
val read_termT_pats = 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

603 
#1 oo gen_read (read_def_termTs false) (apfst o map) None false true false false; 
8096  604 

605 
fun read_term_pats T ctxt pats = read_termT_pats ctxt (map (rpair T) pats); 

606 
val read_prop_pats = read_term_pats propT; 

607 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

608 
val read_term = gen_read (read_term_sg true) I None false false false false; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

609 
val read_term_dummies = gen_read (read_term_sg true) I None false false true false; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

610 
val read_prop = gen_read (read_prop_sg true) I None false false false false; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

611 
val read_prop_schematic = 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

612 
gen_read (read_prop_sg true) I None false false false true; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

613 
val read_terms = gen_read (read_terms_sg true) map None false false false false; 
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

614 
val read_props = gen_read (read_props_sg true) map None false false false; 
5819  615 

10554  616 
end; 
617 

5819  618 

619 
(* certify terms *) 

620 

10554  621 
local 
622 

623 
fun gen_cert cert is_pat schematic ctxt t = t 

14174
f3cafd2929d5
Methods rule_tac etc support static (Isar) contexts.
ballarin
parents:
13629
diff
changeset

624 
> (if is_pat then I else norm_term ctxt schematic false) 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

625 
> (fn t' => cert (sign_of ctxt) t' handle TERM (msg, _) => raise CONTEXT (msg, ctxt)); 
5819  626 

10554  627 
in 
8096  628 

10554  629 
val cert_term = gen_cert cert_term_sg false false; 
630 
val cert_prop = gen_cert cert_prop_sg false false; 

631 
val cert_props = map oo gen_cert cert_prop_sg false; 

632 

633 
fun cert_term_pats _ = map o gen_cert cert_term_sg true false; 

634 
val cert_prop_pats = map o gen_cert cert_prop_sg true false; 

635 

636 
end; 

5819  637 

638 

639 
(* declare terms *) 

640 

10381  641 
local 
642 

5819  643 
val ins_types = foldl_aterms 
644 
(fn (types, Free (x, T)) => Vartab.update (((x, ~1), T), types) 

645 
 (types, Var v) => Vartab.update (v, types) 

646 
 (types, _) => types); 

647 

648 
val ins_sorts = foldl_types (foldl_atyps 

649 
(fn (sorts, TFree (x, S)) => Vartab.update (((x, ~1), S), sorts) 

650 
 (sorts, TVar v) => Vartab.update (v, sorts) 

651 
 (sorts, _) => sorts)); 

652 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

653 
val ins_used = foldl_term_types (fn t => foldl_atyps 
12504  654 
(fn (used, TFree (x, _)) => x ins_string used 
655 
 (used, _) => used)); 

12291  656 

657 
val ins_occs = foldl_term_types (fn t => foldl_atyps 

658 
(fn (tab, TFree (x, _)) => Symtab.update_multi ((x, t), tab)  (tab, _) => tab)); 

5819  659 

7663  660 
fun ins_skolem def_ty = foldr 
5994  661 
(fn ((x, x'), types) => 
7663  662 
(case def_ty x' of 
5994  663 
Some T => Vartab.update (((x, ~1), T), types) 
664 
 None => types)); 

665 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

666 
fun map_defaults f = map_context (fn (thy, syntax, data, asms, binds, thms, cases, defs) => 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

667 
(thy, syntax, data, asms, binds, thms, cases, f defs)); 
5819  668 

10381  669 
fun declare_syn (ctxt, t) = 
5819  670 
ctxt 
12291  671 
> map_defaults (fn (types, sorts, used, occ) => (ins_types (types, t), sorts, used, occ)) 
672 
> map_defaults (fn (types, sorts, used, occ) => (types, ins_sorts (sorts, t), used, occ)) 

673 
> map_defaults (fn (types, sorts, used, occ) => (types, sorts, ins_used (used, t), occ)); 

10381  674 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

675 
fun declare_occ (ctxt as Context {asms = (_, fixes), ...}, t) = 
10381  676 
declare_syn (ctxt, t) 
12291  677 
> map_defaults (fn (types, sorts, used, occ) => (types, sorts, used, ins_occs (occ, t))) 
678 
> map_defaults (fn (types, sorts, used, occ) => 

679 
(ins_skolem (fn x => Vartab.lookup (types, (x, ~1))) (fixes, types), sorts, used, occ)); 

5819  680 

10381  681 
in 
5819  682 

10381  683 
fun declare_term t ctxt = declare_occ (ctxt, t); 
684 
fun declare_terms ts ctxt = foldl declare_occ (ctxt, ts); 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

685 
fun declare_terms_syntax ts ctxt = foldl declare_syn (ctxt, ts); 
10381  686 

687 
end; 

5819  688 

689 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

690 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

691 
(** pretty printing **) 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

692 

12093  693 
fun pretty_term ctxt = Sign.pretty_term' (syn_of ctxt) (sign_of ctxt) o context_tr' ctxt; 
12057  694 
val pretty_typ = Sign.pretty_typ o sign_of; 
695 
val pretty_sort = Sign.pretty_sort o sign_of; 

696 

697 
val string_of_term = Pretty.string_of oo pretty_term; 

698 

699 
fun pretty_thm ctxt thm = 

12770  700 
if ! Display.show_hyps then 
701 
Display.pretty_thm_aux (pretty_sort ctxt, pretty_term ctxt) false thm 

12804  702 
else pretty_term ctxt (Thm.prop_of thm); 
12057  703 

704 
fun pretty_thms ctxt [th] = pretty_thm ctxt th 

705 
 pretty_thms ctxt ths = Pretty.blk (0, Pretty.fbreaks (map (pretty_thm ctxt) ths)); 

706 

13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

707 
fun pretty_fact ctxt ("", ths) = pretty_thms ctxt ths 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

708 
 pretty_fact ctxt (a, [th]) = 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

709 
Pretty.block [Pretty.str (a ^ ":"), Pretty.brk 1, pretty_thm ctxt th] 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

710 
 pretty_fact ctxt (a, ths) = 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

711 
Pretty.block (Pretty.fbreaks (Pretty.str (a ^ ":") :: map (pretty_thm ctxt) ths)); 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

712 

12057  713 

714 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

715 
(** HindleyMilner polymorphism **) 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

716 

7925  717 
(* warn_extra_tfrees *) 
718 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

719 
fun warn_extra_tfrees 
12291  720 
(ctxt1 as Context {defs = (_, _, _, occ1), ...}) 
721 
(ctxt2 as Context {defs = (_, _, _, occ2), ...}) = 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

722 
let 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

723 
fun known_tfree a (Type (_, Ts)) = exists (known_tfree a) Ts 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

724 
 known_tfree a (TFree (a', _)) = a = a' 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

725 
 known_tfree _ _ = false; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

726 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

727 
val extras = 
12291  728 
Library.gen_rems Library.eq_fst (Symtab.dest occ2, Symtab.dest occ1) 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

729 
> map (fn (a, ts) => map (pair a) (mapfilter (try (#1 o Term.dest_Free)) ts)) > flat 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

730 
> mapfilter (fn (a, x) => 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

731 
(case def_type ctxt1 false (x, ~1) of None => Some (a, x) 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

732 
 Some T => if known_tfree a T then None else Some (a, x))); 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

733 
val tfrees = map #1 extras > Library.sort_strings > Library.unique_strings; 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

734 
val frees = map #2 extras > Library.sort_strings > Library.unique_strings; 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

735 
in 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

736 
if null extras then () 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

737 
else warning ("Just introduced free type variable(s): " ^ commas tfrees ^ " in " ^ 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

738 
space_implode " or " frees); 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

739 
ctxt2 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

740 
end; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

741 

90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

742 

90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

743 
(* generalize type variables *) 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

744 

12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

745 
fun generalize_tfrees inner outer = 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

746 
let 
12057  747 
val extra_fixes = fixed_names_of inner \\ fixed_names_of outer; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

748 
fun still_fixed (Free (x, _)) = not (x mem_string extra_fixes) 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

749 
 still_fixed _ = false; 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

750 
val occs_inner = type_occs inner; 
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

751 
val occs_outer = type_occs outer; 
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

752 
fun add (gen, a) = 
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

753 
if is_some (Symtab.lookup (occs_outer, a)) orelse 
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

754 
exists still_fixed (Symtab.lookup_multi (occs_inner, a)) 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

755 
then gen else a :: gen; 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

756 
in fn tfrees => foldl add ([], tfrees) end; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

757 

12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

758 
fun generalize inner outer ts = 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

759 
let 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

760 
val tfrees = generalize_tfrees inner outer (foldr Term.add_term_tfree_names (ts, [])); 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

761 
fun gen (x, S) = if x mem_string tfrees then TVar ((x, 0), S) else TFree (x, S); 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

762 
in map (Term.map_term_types (Term.map_type_tfree gen)) ts end; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

763 

90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

764 

9553  765 

766 
(** export theorems **) 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

767 

90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

768 
fun get_free x (None, t as Free (y, _)) = if x = y then Some t else None 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

769 
 get_free _ (opt, _) = opt; 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

770 

90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

771 
fun find_free t x = foldl_aterms (get_free x) (None, t); 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

772 

13415  773 
fun export_view view is_goal inner outer = 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

774 
let 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

775 
val gen = generalize_tfrees inner outer; 
12057  776 
val fixes = fixed_names_of inner \\ fixed_names_of outer; 
777 
val asms = Library.drop (length (assumptions_of outer), assumptions_of inner); 

11816  778 
val exp_asms = map (fn (cprops, exp) => exp is_goal cprops) asms; 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

779 
in fn thm => thm 
12804  780 
> Tactic.norm_hhf_rule 
11816  781 
> Seq.EVERY (rev exp_asms) 
13415  782 
> Seq.map (Drule.implies_intr_list view) 
11816  783 
> Seq.map (fn rule => 
784 
let 

785 
val {sign, prop, ...} = Thm.rep_thm rule; 

786 
val frees = map (Thm.cterm_of sign) (mapfilter (find_free prop) fixes); 

12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

787 
val tfrees = gen (Term.add_term_tfree_names (prop, [])); 
11816  788 
in 
789 
rule 

790 
> Drule.forall_intr_list frees 

12804  791 
> Tactic.norm_hhf_rule 
12504  792 
> (#1 o Drule.tvars_intr_list tfrees) 
11816  793 
end) 
794 
end; 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

795 

13415  796 
val export = export_view []; 
13399
c136276dc847
support locale ``views'' (for cumulative predicates);
wenzelm
parents:
13378
diff
changeset

797 

c136276dc847
support locale ``views'' (for cumulative predicates);
wenzelm
parents:
13378
diff
changeset

798 
fun export_standard view inner outer = 
13415  799 
let val exp = export_view view false inner outer in 
13378  800 
fn th => 
801 
(case Seq.pull (exp th) of 

802 
Some (th', _) => th' > Drule.local_standard 

803 
 None => raise CONTEXT ("Internal failure while exporting theorem", inner)) 

804 
end; 

12704  805 

7925  806 

5819  807 

808 
(** bindings **) 

809 

810 
(* update_binds *) 

811 

7606  812 
fun del_bind (ctxt, xi) = 
813 
ctxt 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

814 
> map_context (fn (thy, syntax, data, asms, binds, thms, cases, defs) => 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

815 
(thy, syntax, data, asms, Vartab.update ((xi, None), binds), thms, cases, defs)); 
7606  816 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

817 
fun upd_bind (ctxt, ((x, i), t)) = 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

818 
let 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

819 
val T = Term.fastype_of t; 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

820 
val t' = 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

821 
if null (Term.term_tvars t \\ Term.typ_tvars T) then t 
8637  822 
else Var ((x ^ "_has_extra_type_vars_on_rhs", i), T); 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

823 
in 
5819  824 
ctxt 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

825 
> declare_term t' 
12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

826 
> map_context (fn (thy, syntax, data, asms, binds, thms, cases, defs) => 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

827 
(thy, syntax, data, asms, Vartab.update (((x, i), Some (t', T)), binds), thms, cases, defs)) 
5819  828 
end; 
829 

7606  830 
fun del_upd_bind (ctxt, (xi, None)) = del_bind (ctxt, xi) 
831 
 del_upd_bind (ctxt, (xi, Some t)) = upd_bind (ctxt, (xi, t)); 

832 

5819  833 
fun update_binds bs ctxt = foldl upd_bind (ctxt, bs); 
7606  834 
fun delete_update_binds bs ctxt = foldl del_upd_bind (ctxt, bs); 
835 

5819  836 

8096  837 
(* simult_matches *) 
838 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

839 
fun simult_matches ctxt [] = [] 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

840 
 simult_matches ctxt pairs = 
8096  841 
let 
10554  842 
fun fail () = raise CONTEXT ("Pattern match failed!", ctxt); 
843 

8096  844 
val maxidx = foldl (fn (i, (t1, t2)) => 
845 
Int.max (i, Int.max (Term.maxidx_of_term t1, Term.maxidx_of_term t2))) (~1, pairs); 

10554  846 
val envs = Unify.smash_unifiers (sign_of ctxt, Envir.empty maxidx, 
847 
map swap pairs); (*prefer assignment of variables from patterns*) 

848 
val env = 

8096  849 
(case Seq.pull envs of 
10554  850 
None => fail () 
851 
 Some (env, _) => env); (*ignore further results*) 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

852 
val domain = 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

853 
filter_out Term.is_replaced_dummy_pattern (map #1 (Drule.vars_of_terms (map #1 pairs))); 
10554  854 
val _ = (*may not assign variables from text*) 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

855 
if null (map #1 (Envir.alist_of env) inter (map #1 (Drule.vars_of_terms (map #2 pairs)))) 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

856 
then () else fail (); 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

857 
fun norm_bind (xi, t) = if xi mem domain then Some (xi, Envir.norm_term env t) else None; 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

858 
in mapfilter norm_bind (Envir.alist_of env) end; 
8096  859 

860 

861 
(* add_binds(_i) *) 

5819  862 

7925  863 
local 
864 

5819  865 
fun gen_bind prep (ctxt, (xi as (x, _), raw_t)) = 
7606  866 
ctxt > delete_update_binds [(xi, apsome (prep ctxt) raw_t)]; 
5819  867 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

868 
fun gen_binds prep binds ctxt = foldl (gen_bind prep) (ctxt, binds); 
7925  869 

10810  870 
in 
871 

10554  872 
fun drop_schematic (b as (xi, Some t)) = if null (Term.term_vars t) then b else (xi, None) 
873 
 drop_schematic b = b; 

874 

5819  875 
val add_binds = gen_binds read_term; 
876 
val add_binds_i = gen_binds cert_term; 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

877 

12147  878 
fun auto_bind f ts ctxt = ctxt > add_binds_i (map drop_schematic (f (sign_of ctxt) ts)); 
879 
val auto_bind_goal = auto_bind AutoBind.goal; 

880 
val auto_bind_facts = auto_bind AutoBind.facts; 

7925  881 

882 
end; 

5819  883 

884 

8096  885 
(* match_bind(_i) *) 
5819  886 

8096  887 
local 
888 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

889 
fun prep_bind prep_pats (ctxt, (raw_pats, t)) = 
5819  890 
let 
8096  891 
val ctxt' = declare_term t ctxt; 
892 
val pats = prep_pats (fastype_of t) ctxt' raw_pats; 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

893 
val binds = simult_matches ctxt' (map (rpair t) pats); 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

894 
in (ctxt', binds) end; 
7670  895 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

896 
fun gen_binds prep_terms prep_pats gen raw_binds ctxt = 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

897 
let 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

898 
val ts = prep_terms ctxt (map snd raw_binds); 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

899 
val (ctxt', binds) = 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

900 
apsnd flat (foldl_map (prep_bind prep_pats) (ctxt, map fst raw_binds ~~ ts)); 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

901 
val binds' = 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

902 
if gen then map #1 binds ~~ generalize ctxt' ctxt (map #2 binds) 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

903 
else binds; 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

904 
val binds'' = map (apsnd Some) binds'; 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

905 
in 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

906 
warn_extra_tfrees ctxt 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

907 
(if gen then ctxt (*sic!*) > declare_terms (map #2 binds') > add_binds_i binds'' 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

908 
else ctxt' > add_binds_i binds'') 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

909 
end; 
8096  910 

911 
in 

5935  912 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

913 
val match_bind = gen_binds read_terms read_term_pats; 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

914 
val match_bind_i = gen_binds (map o cert_term) cert_term_pats; 
8096  915 

916 
end; 

5935  917 

918 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

919 
(* propositions with patterns *) 
5935  920 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

921 
local 
8096  922 

10554  923 
fun prep_propp schematic prep_props prep_pats (context, args) = 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

924 
let 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

925 
fun prep ((ctxt, prop :: props), (_, (raw_pats1, raw_pats2))) = 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

926 
let 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

927 
val ctxt' = declare_term prop ctxt; 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

928 
val pats = prep_pats ctxt' (raw_pats1 @ raw_pats2); (*simultaneous type inference!*) 
13629  929 
in ((ctxt', props), (prop, splitAt(length raw_pats1, pats))) end 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

930 
 prep _ = sys_error "prep_propp"; 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

931 
val ((context', _), propp) = foldl_map (foldl_map prep) 
10554  932 
((context, prep_props schematic context (flat (map (map fst) args))), args); 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

933 
in (context', propp) end; 
5935  934 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

935 
fun matches ctxt (prop, (pats1, pats2)) = 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

936 
simult_matches ctxt (map (rpair prop) pats1 @ map (rpair (Logic.strip_imp_concl prop)) pats2); 
8096  937 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

938 
fun gen_bind_propp prepp (ctxt, raw_args) = 
8096  939 
let 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

940 
val (ctxt', args) = prepp (ctxt, raw_args); 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

941 
val binds = flat (flat (map (map (matches ctxt')) args)); 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

942 
val propss = map (map #1) args; 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

943 

10554  944 
(*generalize result: context evaluated now, binds added later*) 
8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

945 
val gen = generalize ctxt' ctxt; 
12550
32843ad8160a
generalize type variables properly: start with occurrences in objects
wenzelm
parents:
12530
diff
changeset

946 
fun gen_binds c = c > add_binds_i (map #1 binds ~~ map Some (gen (map #2 binds))); 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

947 
in (ctxt' > add_binds_i (map (apsnd Some) binds), (propss, gen_binds)) end; 
8096  948 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

949 
in 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

950 

11925  951 
val read_propp = prep_propp false read_props read_prop_pats; 
952 
val cert_propp = prep_propp false cert_props cert_prop_pats; 

10554  953 
val read_propp_schematic = prep_propp true read_props read_prop_pats; 
954 
val cert_propp_schematic = prep_propp true cert_props cert_prop_pats; 

955 

11925  956 
val bind_propp = gen_bind_propp read_propp; 
957 
val bind_propp_i = gen_bind_propp cert_propp; 

958 
val bind_propp_schematic = gen_bind_propp read_propp_schematic; 

10554  959 
val bind_propp_schematic_i = gen_bind_propp cert_propp_schematic; 
6789  960 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

961 
end; 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

962 

6789  963 

5819  964 

965 
(** theorems **) 

966 

6091  967 
(* get_thm(s) *) 
5819  968 

9566  969 
(*beware of proper order of evaluation!*) 
13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

970 
fun retrieve_thms f g (ctxt as Context {thy, thms = (_, space, tab, _), ...}) = 
9566  971 
let 
972 
val sg_ref = Sign.self_ref (Theory.sign_of thy); 

973 
val get_from_thy = f thy; 

974 
in 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

975 
fn xname => 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

976 
(case Symtab.lookup (tab, NameSpace.intern space xname) of 
9566  977 
Some (Some ths) => map (Thm.transfer_sg (Sign.deref sg_ref)) ths 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

978 
 _ => get_from_thy xname) > g xname 
9566  979 
end; 
5819  980 

9566  981 
val get_thm = retrieve_thms PureThy.get_thms PureThy.single_thm; 
982 
val get_thm_closure = retrieve_thms PureThy.get_thms_closure PureThy.single_thm; 

983 
val get_thms = retrieve_thms PureThy.get_thms (K I); 

984 
val get_thms_closure = retrieve_thms PureThy.get_thms_closure (K I); 

5819  985 

986 

13425
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

987 
(* name space operations *) 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

988 

13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

989 
fun cond_extern (Context {thms = (_, space, _, _), ...}) = NameSpace.cond_extern space; 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

990 

13399
c136276dc847
support locale ``views'' (for cumulative predicates);
wenzelm
parents:
13378
diff
changeset

991 
fun qualified q = map_context (fn (thy, syntax, data, asms, binds, 
13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

992 
(_, space, tab, index), cases, defs) => 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

993 
(thy, syntax, data, asms, binds, (q, space, tab, index), cases, defs)); 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

994 

13399
c136276dc847
support locale ``views'' (for cumulative predicates);
wenzelm
parents:
13378
diff
changeset

995 
fun restore_qualified (Context {thms, ...}) = qualified (#1 thms); 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

996 

13425
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

997 
fun hide_thms fully names = 
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

998 
map_context (fn (thy, syntax, data, asms, binds, (q, space, tab, index), cases, defs) => 
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

999 
(thy, syntax, data, asms, binds, (q, NameSpace.hide fully (space, names), tab, index), 
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

1000 
cases, defs)); 
119ae829ad9b
support for split assumptions in cases (hyps vs. prems);
wenzelm
parents:
13415
diff
changeset

1001 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1002 

6091  1003 
(* put_thm(s) *) 
5819  1004 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1005 
fun put_thms ("", _) ctxt = ctxt 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1006 
 put_thms (name, ths) ctxt = ctxt > map_context 
13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1007 
(fn (thy, syntax, data, asms, binds, (q, space, tab, index), cases, defs) => 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1008 
if not q andalso NameSpace.is_qualified name then 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1009 
raise CONTEXT ("Attempt to declare qualified name " ^ quote name, ctxt) 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1010 
else (thy, syntax, data, asms, binds, (q, NameSpace.extend (space, [name]), 
13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1011 
Symtab.update ((name, Some ths), tab), 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1012 
FactIndex.add (is_known ctxt) (index, (name, ths))), cases, defs)); 
5819  1013 

6091  1014 
fun put_thm (name, th) = put_thms (name, [th]); 
5819  1015 

6091  1016 
fun put_thmss [] ctxt = ctxt 
1017 
 put_thmss (th :: ths) ctxt = ctxt > put_thms th > put_thmss ths; 

5819  1018 

1019 

7606  1020 
(* reset_thms *) 
1021 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1022 
fun reset_thms name = 
13278
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1023 
map_context (fn (thy, syntax, data, asms, binds, (q, space, tab, index), cases, defs) => 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1024 
(thy, syntax, data, asms, binds, (q, space, Symtab.update ((name, None), tab), index), 
b62514fcbcab
print_thms_containing: index variables, refer to local facts as well;
wenzelm
parents:
12863
diff
changeset

1025 
cases, defs)); 
7606  1026 

1027 

6091  1028 
(* have_thmss *) 
5819  1029 

12711  1030 
local 
1031 

1032 
fun gen_have_thss get (ctxt, ((name, more_attrs), ths_attrs)) = 

5819  1033 
let 
1034 
fun app ((ct, ths), (th, attrs)) = 

12711  1035 
let val (ct', th') = Thm.applys_attributes ((ct, get ctxt th), attrs @ more_attrs) 
1036 
in (ct', th' :: ths) end; 

5819  1037 
val (ctxt', rev_thms) = foldl app ((ctxt, []), ths_attrs); 
9196  1038 
val thms = flat (rev rev_thms); 
6091  1039 
in (ctxt' > put_thms (name, thms), (name, thms)) end; 
5819  1040 

12711  1041 
fun gen_have_thmss get args ctxt = foldl_map (gen_have_thss get) (ctxt, args); 
1042 

1043 
in 

1044 

1045 
val have_thmss = gen_have_thmss get_thms; 

1046 
val have_thmss_i = gen_have_thmss (K I); 

1047 

1048 
end; 

9196  1049 

5819  1050 

1051 

1052 
(** assumptions **) 

1053 

11918
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1054 
(* basic exporters *) 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1055 

dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1056 
fun export_assume true = Seq.single oo Drule.implies_intr_goals 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1057 
 export_assume false = Seq.single oo Drule.implies_intr_list; 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1058 

dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1059 
fun export_presume _ = export_assume false; 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1060 

dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1061 

12057  1062 
(* defs *) 
1063 

12066  1064 
fun cert_def ctxt eq = 
12016  1065 
let 
12057  1066 
fun err msg = raise CONTEXT (msg ^ 
1067 
"\nThe error(s) above occurred in local definition: " ^ string_of_term ctxt eq, ctxt); 

1068 
val (lhs, rhs) = Logic.dest_equals (Term.strip_all_body eq) 

1069 
handle TERM _ => err "Not a metaequality (==)"; 

12086  1070 
val (f, xs) = Term.strip_comb lhs; 
1071 
val (c, _) = Term.dest_Free f handle TERM _ => 

13430  1072 
err "Head of lhs must be a free/fixed variable"; 
12057  1073 

12086  1074 
fun is_free (Free (x, _)) = not (is_fixed ctxt x) 
1075 
 is_free _ = false; 

1076 
val extra_frees = filter is_free (term_frees rhs) \\ xs; 

12016  1077 
in 
12086  1078 
conditional (not (forall (is_Bound orf is_free) xs andalso null (duplicates xs))) (fn () => 
13430  1079 
err "Arguments of lhs must be distinct free/bound variables"); 
12086  1080 
conditional (f mem Term.term_frees rhs) (fn () => 
1081 
err "Element to be defined occurs on rhs"); 

1082 
conditional (not (null extra_frees)) (fn () => 

1083 
err ("Extra free variables on rhs: " ^ commas_quote (map (#1 o dest_Free) extra_frees))); 

1084 
(c, Term.list_all_free (mapfilter (try Term.dest_Free) xs, eq)) 

12057  1085 
end; 
1086 

1087 
fun head_of_def cprop = 

1088 
#1 (Term.strip_comb (#1 (Logic.dest_equals (Term.strip_all_body (Thm.term_of cprop))))) 

1089 
> Thm.cterm_of (Thm.sign_of_cterm cprop); 

11918
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1090 

dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1091 
fun export_def _ cprops thm = 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1092 
thm 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1093 
> Drule.implies_intr_list cprops 
12057  1094 
> Drule.forall_intr_list (map head_of_def cprops) 
11918
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1095 
> Drule.forall_elim_vars 0 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1096 
> RANGE (replicate (length cprops) (Tactic.rtac Drule.reflexive_thm)) 1; 
dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1097 

dfdf0798d7b8
added export_assume, export_presume, export_def (from proof.ML);
wenzelm
parents:
11915
diff
changeset

1098 

5819  1099 
(* assume *) 
1100 

7270  1101 
local 
6797  1102 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1103 
fun add_assm (ctxt, ((name, attrs), props)) = 
5819  1104 
let 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1105 
val cprops = map (Thm.cterm_of (sign_of ctxt)) props; 
12804  1106 
val asms = map (Tactic.norm_hhf_rule o Thm.assume) cprops; 
5919  1107 

1108 
val ths = map (fn th => ([th], [])) asms; 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1109 
val (ctxt', [(_, thms)]) = 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1110 
ctxt 
12147  1111 
> auto_bind_facts props 
12711  1112 
> have_thmss_i [((name, attrs), ths)]; 
10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1113 
in (ctxt', (cprops, (name, asms), (name, thms))) end; 
5819  1114 

9470  1115 
fun gen_assms prepp exp args ctxt = 
1116 
let 

10465
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1117 
val (ctxt1, propss) = prepp (ctxt, map snd args); 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1118 
val (ctxt2, results) = foldl_map add_assm (ctxt1, map fst args ~~ propss); 
4aa6f8b5cdc4
added read_terms, read_props (simulataneous typeinference);
wenzelm
parents:
10381
diff
changeset

1119 

9470  1120 
val cprops = flat (map #1 results); 
1121 
val asmss = map #2 results; 

1122 
val thmss = map #3 results; 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1123 
val ctxt3 = ctxt2 > map_context 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1124 
(fn (thy, syntax, data, ((asms_ct, asms_th), fixes), binds, thms, cases, defs) => 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1125 
(thy, syntax, data, ((asms_ct @ [(cprops, exp)], asms_th @ asmss), fixes), binds, thms, 
9470  1126 
cases, defs)); 
11925  1127 
val ctxt4 = ctxt3 > put_thms ("prems", prems_of ctxt3); 
1128 
in (warn_extra_tfrees ctxt ctxt4, thmss) end; 

5819  1129 

7270  1130 
in 
1131 

8616
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

1132 
val assume = gen_assms (apsnd #1 o bind_propp); 
90d2fed59be1
support HindleyMilner polymorphisms in binds and facts;
wenzelm
parents:
8462
diff
changeset

1133 
val assume_i = gen_assms (apsnd #1 o bind_propp_i); 
7270  1134 

1135 
end; 

5819  1136 

1137 

8096  1138 
(* variables *) 
1139 

10381  1140 
local 
1141 

12504  1142 
fun prep_vars prep_typ internal (ctxt, (xs, raw_T)) = 
8096  1143 
let 
12504  1144 
fun cond_tvars T = 
1145 
if internal then T 

1146 
else Type.no_tvars T handle TYPE (msg, _, _) => raise CONTEXT (msg, ctxt); 

1147 

1148 
val _ = (case filter (not o Syntax.is_identifier) (map (no_skolem internal ctxt) xs) of 

8096  1149 
[] => ()  bads => raise CONTEXT ("Bad variable name(s): " ^ commas_quote bads, ctxt)); 
1150 

12504  1151 
val opt_T = apsome (cond_tvars o prep_typ ctxt) raw_T; 
8096  1152 
val T = if_none opt_T TypeInfer.logicT; 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1153 
val ctxt' = ctxt > declare_terms_syntax (map (fn x => Free (x, T)) xs); 
8096  1154 
in (ctxt', (xs, opt_T)) end; 
1155 

10381  1156 
in 
1157 

12504  1158 
val read_vars = prep_vars read_typ false; 
1159 
val cert_vars = prep_vars cert_typ true; 

8096  1160 

10381  1161 
end; 
1162 

8096  1163 

5819  1164 
(* fix *) 
1165 

8096  1166 
local 
1167 

12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1168 
fun map_fixes f = 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1169 
map_context (fn (thy, syntax, data, (assumes, fixes), binds, thms, cases, defs) => 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1170 
(thy, syntax, data, (assumes, f fixes), binds, thms, cases, defs)); 
5819  1171 

11925  1172 
fun err_dups ctxt xs = raise CONTEXT ("Duplicate variable(s): " ^ commas_quote xs, ctxt); 
1173 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1174 
val declare = 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1175 
declare_terms_syntax o mapfilter (fn (_, None) => None  (x, Some T) => Some (Free (x, T))); 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1176 

30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1177 
fun add_vars xs Ts ctxt = 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1178 
let val xs' = Term.variantlist (map Syntax.skolem xs, map #2 (fixes_of ctxt)) in 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1179 
ctxt 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1180 
> declare (xs' ~~ Ts) 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1181 
> map_fixes (fn fixes => (xs ~~ xs') @ fixes) 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1182 
end; 
11925  1183 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1184 
fun add_vars_direct xs Ts ctxt = 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1185 
ctxt 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1186 
> declare (xs ~~ Ts) 
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1187 
> map_fixes (fn fixes => 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1188 
(case xs inter_string map #1 fixes of 
12309
03e9287be350
name space for local thms (export cond_extern, qualified);
wenzelm
parents:
12291
diff
changeset

1189 
[] => (xs ~~ xs) @ fixes 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1190 
 dups => err_dups ctxt dups)); 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1191 

11925  1192 

1193 
fun gen_fix prep add raw_vars ctxt = 

8096  1194 
let 
1195 
val (ctxt', varss) = foldl_map prep (ctxt, raw_vars); 

12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1196 
val vars = rev (flat (map (fn (xs, T) => map (rpair T) xs) varss)); 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1197 
val xs = map #1 vars; 
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1198 
val Ts = map #2 vars; 
8096  1199 
in 
11925  1200 
(case Library.duplicates xs of [] => ()  dups => err_dups ctxt dups); 
12130
30d9143aff7e
syntactic declaration of external *and* internal versions of fixes;
wenzelm
parents:
12123
diff
changeset

1201 
ctxt' > add xs Ts 
8096  1202 
end; 
5819  1203 

12576
9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
wenzelm
parents:
12550
diff
changeset

1204 
fun prep_type (x, None, Some mx) = ([x], Some (mixfix_type mx)) 
9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
wenzelm
parents:
12550
diff
changeset

1205 
 prep_type (x, opt_T, _) = ([x], opt_T); 
9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
wenzelm
parents:
12550
diff
changeset

1206 

8096  1207 
in 
7679  1208 

11925  1209 
val fix = gen_fix read_vars add_vars; 
1210 
val fix_i = gen_fix cert_vars add_vars; 

1211 
val fix_direct = gen_fix cert_vars add_vars_direct; 

12576
9fd10052c3f7
added add_fixes: derives mssing type scheme from mixfix;
wenzelm
parents:
12550
diff
changeset

1212 
fun add_fixes decls = add_syntax decls o fix_direct (map prep_type decls); 
8096  1213 

1214 
end; 

5819  1215 

12048  1216 
fun fix_frees ts ctxt = 
1217 
let 

12504  1218 
val frees = foldl Term.add_frees ([], ts); 
12057  1219 
fun new (x, T) = if is_fixed ctxt x then None else Some ([x], Some T); 
12213  1220 
in fix_direct (rev (mapfilter new frees)) ctxt end; 
12016  1221 

6895  1222 

9291
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1223 
(*Note: improper use may result in variable capture / dynamic scoping!*) 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1224 
fun bind_skolem ctxt xs = 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1225 
let 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1226 
val ctxt' = ctxt > fix_i [(xs, None)]; 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1227 
fun bind (t as Free (x, T)) = 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1228 
if x mem_string xs then 
10583  1229 
(case lookup_skolem ctxt' x of Some x' => Free (x', T)  None => t) 
9291
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1230 
else t 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1231 
 bind (t $ u) = bind t $ bind u 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1232 
 bind (Abs (x, T, t)) = Abs (x, T, bind t) 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1233 
 bind a = a; 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1234 
in bind end; 
23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1235 

23705d14be8f
"_i" arguments now expected to have skolems already internalized;
wenzelm
parents:
9274
diff
changeset

1236 

5819  1237 

8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1238 
(** cases **) 
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1239 

11793
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1240 
fun prep_case ctxt name xs {fixes, assumes, binds} = 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1241 
let 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1242 
fun replace (opt_x :: xs) ((y, T) :: ys) = (if_none opt_x y, T) :: replace xs ys 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1243 
 replace [] ys = ys 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1244 
 replace (_ :: _) [] = raise CONTEXT ("Too many parameters for case " ^ quote name, ctxt); 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1245 
in 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1246 
if null (foldr Term.add_typ_tvars (map snd fixes, [])) andalso 
13426  1247 
null (foldr Term.add_term_vars (flat (map snd assumes), [])) then 
11793
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1248 
{fixes = replace xs fixes, assumes = assumes, binds = map drop_schematic binds} 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1249 
else raise CONTEXT ("Illegal schematic variable(s) in case " ^ quote name, ctxt) 
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1250 
end; 
8403  1251 

11793
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1252 
fun get_case (ctxt as Context {cases, ...}) name xs = 
8426  1253 
(case assoc (cases, name) of 
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1254 
None => raise CONTEXT ("Unknown case: " ^ quote name, ctxt) 
11793
5f0ab6f5c280
support impromptu terminology of cases parameters;
wenzelm
parents:
11764
diff
changeset

1255 
 Some c => prep_case ctxt name xs c); 
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1256 

8384  1257 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1258 
fun add_cases xs = map_context (fn (thy, syntax, data, asms, binds, thms, cases, defs) => 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1259 
(thy, syntax, data, asms, binds, thms, rev (filter_out (equal "" o #1) xs) @ cases, defs)); 
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1260 

e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1261 

e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset

1262 

10810  1263 
(** print context information **) 
1264 

1265 
val verbose = ref false; 

1266 
fun verb f x = if ! verbose then f (x ()) else []; 

1267 
fun verb_single x = verb Library.single x; 

1268 

1269 
fun setmp_verbose f x = Library.setmp verbose true f x; 

1270 

1271 
fun pretty_items prt name items = 

1272 
let 

1273 
fun prt_itms (name, [x]) = Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt x] 

1274 
 prt_itms (name, xs) = Pretty.big_list (name ^ ":") (map prt xs); 

1275 
in 

1276 
if null items andalso not (! verbose) then [] 

1277 
else [Pretty.big_list name (map prt_itms items)] 

1278 
end; 

1279 

1280 

12072
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1281 
(* local syntax *) 
4281198fb8cd
local syntax: add_syntax, proper read/pretty functions;
wenzelm
parents:
12066
diff
changeset

1282 

12093 