author | wenzelm |
Sun, 25 Oct 2009 19:14:46 +0100 | |
changeset 33164 | b8fd9b6bba7c |
parent 33157 | 56f836b9414f |
child 33281 | 223ef9bc399a |
permissions | -rw-r--r-- |
6118 | 1 |
(* Title: Pure/General/name_space.ML |
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Author: Markus Wenzel, TU Muenchen |
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Generic name spaces with declared and hidden entries. Unknown names |
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are considered global; no support for absolute addressing. |
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*) |
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type xstring = string; (*external names*) |
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signature BASIC_NAME_SPACE = |
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sig |
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val long_names: bool Unsynchronized.ref |
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val short_names: bool Unsynchronized.ref |
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val unique_names: bool Unsynchronized.ref |
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end; |
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|
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signature NAME_SPACE = |
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sig |
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include BASIC_NAME_SPACE |
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val hidden: string -> string |
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val is_hidden: string -> bool |
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type T |
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val empty: string -> T |
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val kind_of: T -> string |
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val the_entry: T -> string -> |
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{concealed: bool, group: serial option, theory_name: string, pos: Position.T, id: serial} |
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val is_concealed: T -> string -> bool |
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val intern: T -> xstring -> string |
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val extern_flags: {long_names: bool, short_names: bool, unique_names: bool} -> |
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T -> string -> xstring |
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val extern: T -> string -> xstring |
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val hide: bool -> string -> T -> T |
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val merge: T * T -> T |
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type naming |
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val default_naming: naming |
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val conceal: naming -> naming |
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val set_group: serial -> naming -> naming |
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val set_theory_name: string -> naming -> naming |
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val add_path: string -> naming -> naming |
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val root_path: naming -> naming |
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val parent_path: naming -> naming |
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val mandatory_path: string -> naming -> naming |
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val full_name: naming -> binding -> string |
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val external_names: naming -> string -> string list |
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val declare: bool -> naming -> binding -> T -> string * T |
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type 'a table = T * 'a Symtab.table |
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val define: bool -> naming -> binding * 'a -> 'a table -> string * 'a table |
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val empty_table: string -> 'a table |
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val merge_tables: 'a table * 'a table -> 'a table |
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val join_tables: (string -> 'a * 'a -> 'a) (*Symtab.SAME*) -> |
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'a table * 'a table -> 'a table |
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val dest_table: 'a table -> (string * 'a) list |
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val extern_table: 'a table -> (xstring * 'a) list |
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end; |
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structure Name_Space: NAME_SPACE = |
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struct |
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(** name spaces **) |
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|
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(* hidden entries *) |
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fun hidden name = "??." ^ name; |
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val is_hidden = String.isPrefix "??."; |
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(* datatype entry *) |
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|
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type entry = |
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{externals: xstring list, |
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concealed: bool, |
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group: serial option, |
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theory_name: string, |
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pos: Position.T, |
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id: serial}; |
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|
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fun str_of_entry def (name, {pos, id, ...}: entry) = |
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let |
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val occurrence = (if def then Markup.defN else Markup.refN, string_of_int id); |
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val props = occurrence :: Position.properties_of pos; |
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in Markup.markup (Markup.properties props (Markup.entity name)) name end; |
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fun err_dup kind entry1 entry2 = |
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error ("Duplicate " ^ kind ^ " declaration " ^ |
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quote (str_of_entry true entry1) ^ " vs. " ^ quote (str_of_entry true entry2)); |
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(* datatype T *) |
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datatype T = |
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Name_Space of |
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{kind: string, |
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internals: (string list * string list) Symtab.table, (*visible, hidden*) |
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entries: entry Symtab.table}; |
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fun make_name_space (kind, internals, entries) = |
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Name_Space {kind = kind, internals = internals, entries = entries}; |
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fun map_name_space f (Name_Space {kind = kind, internals = internals, entries = entries}) = |
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make_name_space (f (kind, internals, entries)); |
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fun map_internals f xname = map_name_space (fn (kind, internals, entries) => |
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(kind, Symtab.map_default (xname, ([], [])) f internals, entries)); |
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fun empty kind = make_name_space (kind, Symtab.empty, Symtab.empty); |
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fun kind_of (Name_Space {kind, ...}) = kind; |
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fun the_entry (Name_Space {kind, entries, ...}) name = |
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(case Symtab.lookup entries name of |
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NONE => error ("Unknown " ^ kind ^ " " ^ quote name) |
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| SOME {concealed, group, theory_name, pos, id, ...} => |
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{concealed = concealed, group = group, theory_name = theory_name, pos = pos, id = id}); |
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fun is_concealed space name = #concealed (the_entry space name); |
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(* name accesses *) |
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fun lookup (Name_Space {internals, ...}) xname = |
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(case Symtab.lookup internals xname of |
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NONE => (xname, true) |
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| SOME ([], []) => (xname, true) |
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| SOME ([name], _) => (name, true) |
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| SOME (name :: _, _) => (name, false) |
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| SOME ([], name' :: _) => (hidden name', true)); |
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fun get_accesses (Name_Space {entries, ...}) name = |
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(case Symtab.lookup entries name of |
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NONE => [name] |
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| SOME {externals, ...} => externals); |
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fun valid_accesses (Name_Space {internals, ...}) name = |
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Symtab.fold (fn (xname, (names, _)) => |
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if not (null names) andalso hd names = name then cons xname else I) internals []; |
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(* intern and extern *) |
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fun intern space xname = #1 (lookup space xname); |
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||
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fun extern_flags {long_names, short_names, unique_names} space name = |
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let |
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fun valid require_unique xname = |
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let val (name', is_unique) = lookup space xname |
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in name = name' andalso (not require_unique orelse is_unique) end; |
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fun ext [] = if valid false name then name else hidden name |
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| ext (nm :: nms) = if valid unique_names nm then nm else ext nms; |
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in |
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if long_names then name |
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else if short_names then Long_Name.base_name name |
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else ext (get_accesses space name) |
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end; |
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val long_names = Unsynchronized.ref false; |
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val short_names = Unsynchronized.ref false; |
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val unique_names = Unsynchronized.ref true; |
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|
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fun extern space name = |
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extern_flags |
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{long_names = ! long_names, |
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short_names = ! short_names, |
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unique_names = ! unique_names} space name; |
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167 |
|
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(* modify internals *) |
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val del_name = map_internals o apfst o remove (op =); |
172 |
fun del_name_extra name = |
|
173 |
map_internals (apfst (fn [] => [] | x :: xs => x :: remove (op =) name xs)); |
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val add_name = map_internals o apfst o update (op =); |
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val add_name' = map_internals o apsnd o update (op =); |
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178 |
(* hide *) |
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fun hide fully name space = |
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if not (Long_Name.is_qualified name) then |
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error ("Attempt to hide global name " ^ quote name) |
183 |
else if is_hidden name then |
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184 |
error ("Attempt to hide hidden name " ^ quote name) |
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else |
186 |
let val names = valid_accesses space name in |
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187 |
space |
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188 |
|> add_name' name name |
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|> fold (del_name name) |
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(if fully then names else inter (op =) [Long_Name.base_name name] names) |
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191 |
|> fold (del_name_extra name) (get_accesses space name) |
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end; |
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|
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||
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(* merge *) |
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|
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fun merge |
198 |
(Name_Space {kind = kind1, internals = internals1, entries = entries1}, |
|
199 |
Name_Space {kind = kind2, internals = internals2, entries = entries2}) = |
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let |
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val kind' = |
202 |
if kind1 = kind2 then kind1 |
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else error ("Attempt to merge different kinds of name spaces " ^ |
|
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quote kind1 ^ " vs. " ^ quote kind2); |
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val internals' = (internals1, internals2) |> Symtab.join |
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(K (fn ((names1, names1'), (names2, names2')) => |
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if pointer_eq (names1, names2) andalso pointer_eq (names1', names2') |
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208 |
then raise Symtab.SAME |
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209 |
else (Library.merge (op =) (names1, names2), Library.merge (op =) (names1', names2')))); |
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val entries' = (entries1, entries2) |> Symtab.join |
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maintain abstract entry, with position, identity etc.;
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|
211 |
(fn name => fn (entry1, entry2) => |
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maintain abstract entry, with position, identity etc.;
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|
212 |
if #id entry1 = #id entry2 then raise Symtab.SAME |
33096 | 213 |
else err_dup kind' (name, entry1) (name, entry2)); |
214 |
in make_name_space (kind', internals', entries') end; |
|
5012 | 215 |
|
16137 | 216 |
|
26440 | 217 |
|
16137 | 218 |
(** naming contexts **) |
219 |
||
220 |
(* datatype naming *) |
|
221 |
||
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Name_Space.naming: maintain group and theory_name as well;
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|
222 |
datatype naming = Naming of |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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|
223 |
{conceal: bool, |
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Name_Space.naming: maintain group and theory_name as well;
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|
224 |
group: serial option, |
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Name_Space.naming: maintain group and theory_name as well;
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|
225 |
theory_name: string, |
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|
226 |
path: (string * bool) list}; |
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Name_Space.naming: maintain group and theory_name as well;
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|
227 |
|
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changeset
|
228 |
fun make_naming (conceal, group, theory_name, path) = |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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|
229 |
Naming {conceal = conceal, group = group, theory_name = theory_name, path = path}; |
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changeset
|
230 |
|
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|
231 |
fun map_naming f (Naming {conceal, group, theory_name, path}) = |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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changeset
|
232 |
make_naming (f (conceal, group, theory_name, path)); |
16137 | 233 |
|
33164
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Name_Space.naming: maintain group and theory_name as well;
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|
234 |
fun map_path f = map_naming (fn (conceal, group, theory_name, path) => |
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|
235 |
(conceal, group, theory_name, f path)); |
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Name_Space.naming: maintain group and theory_name as well;
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changeset
|
236 |
|
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Name_Space.naming: maintain group and theory_name as well;
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changeset
|
237 |
|
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Name_Space.naming: maintain group and theory_name as well;
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changeset
|
238 |
val default_naming = make_naming (false, NONE, "", []); |
33157
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|
239 |
|
33164
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Name_Space.naming: maintain group and theory_name as well;
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|
240 |
val conceal = map_naming (fn (_, group, theory_name, path) => |
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Name_Space.naming: maintain group and theory_name as well;
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|
241 |
(true, group, theory_name, path)); |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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changeset
|
242 |
|
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Name_Space.naming: maintain group and theory_name as well;
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changeset
|
243 |
fun set_group group = map_naming (fn (conceal, _, theory_name, path) => |
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Name_Space.naming: maintain group and theory_name as well;
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|
244 |
(conceal, SOME group, theory_name, path)); |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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changeset
|
245 |
|
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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changeset
|
246 |
fun set_theory_name theory_name = map_naming (fn (conceal, group, _, path) => |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
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changeset
|
247 |
(conceal, group, theory_name, path)); |
16137 | 248 |
|
33157
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|
249 |
fun add_path elems = map_path (fn path => path @ [(elems, false)]); |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
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changeset
|
250 |
val root_path = map_path (fn _ => []); |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
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changeset
|
251 |
val parent_path = map_path (perhaps (try (#1 o split_last))); |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
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changeset
|
252 |
fun mandatory_path elems = map_path (fn path => path @ [(elems, true)]); |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
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parents:
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changeset
|
253 |
|
28860 | 254 |
|
30233
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
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parents:
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diff
changeset
|
255 |
(* full name *) |
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
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changeset
|
256 |
|
30465 | 257 |
fun err_bad binding = error ("Bad name binding " ^ quote (Binding.str_of binding)); |
28860 | 258 |
|
33164
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
wenzelm
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diff
changeset
|
259 |
fun name_spec (Naming {conceal = conceal1, path, ...}) binding = |
30233
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
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parents:
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diff
changeset
|
260 |
let |
33157
56f836b9414f
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wenzelm
parents:
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diff
changeset
|
261 |
val (conceal2, prefix, name) = Binding.dest binding; |
30438
c2d49315b93b
eliminated qualified_names naming policy: qualified names are only permitted via explicit Binding.qualify/qualified_name etc. (NB: user-level outer syntax should never do this);
wenzelm
parents:
30418
diff
changeset
|
262 |
val _ = Long_Name.is_qualified name andalso err_bad binding; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
263 |
|
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
264 |
val concealed = conceal1 orelse conceal2; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
265 |
val spec1 = maps (fn (a, b) => map (rpair b) (Long_Name.explode a)) (path @ prefix); |
30438
c2d49315b93b
eliminated qualified_names naming policy: qualified names are only permitted via explicit Binding.qualify/qualified_name etc. (NB: user-level outer syntax should never do this);
wenzelm
parents:
30418
diff
changeset
|
266 |
val spec2 = if name = "" then [] else [(name, true)]; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
267 |
val spec = spec1 @ spec2; |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
268 |
val _ = |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
269 |
exists (fn (a, _) => a = "" orelse a = "??" orelse exists_string (fn s => s = "\"") a) spec |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
270 |
andalso err_bad binding; |
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
271 |
in (concealed, if null spec2 then [] else spec) end; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
272 |
|
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
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diff
changeset
|
273 |
fun full_name naming = |
33164
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
wenzelm
parents:
33157
diff
changeset
|
274 |
name_spec naming #> #2 #> map #1 #> Long_Name.implode; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
275 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
276 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
277 |
(* accesses *) |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
278 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
279 |
fun mandatory xs = map_filter (fn (x, true) => SOME x | _ => NONE) xs; |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
280 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
281 |
fun mandatory_prefixes xs = mandatory xs :: mandatory_prefixes1 xs |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
282 |
and mandatory_prefixes1 [] = [] |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
283 |
| mandatory_prefixes1 ((x, true) :: xs) = map (cons x) (mandatory_prefixes1 xs) |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
284 |
| mandatory_prefixes1 ((x, false) :: xs) = map (cons x) (mandatory_prefixes xs); |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
285 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
286 |
fun mandatory_suffixes xs = map rev (mandatory_prefixes (rev xs)); |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
287 |
|
30522 | 288 |
fun accesses naming binding = |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
289 |
let |
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
290 |
val spec = #2 (name_spec naming binding); |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
291 |
val sfxs = mandatory_suffixes spec; |
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
292 |
val pfxs = mandatory_prefixes spec; |
30522 | 293 |
in pairself (map Long_Name.implode) (sfxs @ pfxs, sfxs) end; |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
294 |
|
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
295 |
fun external_names naming = #2 o accesses naming o Binding.qualified_name; |
30233
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
wenzelm
parents:
30222
diff
changeset
|
296 |
|
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
wenzelm
parents:
30222
diff
changeset
|
297 |
|
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
wenzelm
parents:
30222
diff
changeset
|
298 |
(* declaration *) |
28860 | 299 |
|
33096 | 300 |
fun new_entry strict entry = |
301 |
map_name_space (fn (kind, internals, entries) => |
|
302 |
let |
|
303 |
val entries' = |
|
304 |
(if strict then Symtab.update_new else Symtab.update) entry entries |
|
305 |
handle Symtab.DUP dup => |
|
306 |
err_dup kind (dup, the (Symtab.lookup entries dup)) entry; |
|
307 |
in (kind, internals, entries') end); |
|
33091
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
308 |
|
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
309 |
fun declare strict naming binding space = |
30233
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
wenzelm
parents:
30222
diff
changeset
|
310 |
let |
33164
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
wenzelm
parents:
33157
diff
changeset
|
311 |
val Naming {group, theory_name, ...} = naming; |
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
312 |
val (concealed, spec) = name_spec naming binding; |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
313 |
val (accs, accs') = accesses naming binding; |
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
314 |
|
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
315 |
val name = Long_Name.implode (map fst spec); |
30412
7f5b0a020ccd
just one naming policy based on binding content -- eliminated odd "object-oriented" style;
wenzelm
parents:
30359
diff
changeset
|
316 |
val _ = name = "" andalso err_bad binding; |
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
317 |
|
33096 | 318 |
val entry = |
319 |
{externals = accs', |
|
33157
56f836b9414f
allow name space entries to be "concealed" -- via binding/naming/local_theory;
wenzelm
parents:
33097
diff
changeset
|
320 |
concealed = concealed, |
33164
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
wenzelm
parents:
33157
diff
changeset
|
321 |
group = group, |
b8fd9b6bba7c
Name_Space.naming: maintain group and theory_name as well;
wenzelm
parents:
33157
diff
changeset
|
322 |
theory_name = theory_name, |
33097
9d501e11084a
maintain position of formal entities via name space;
wenzelm
parents:
33096
diff
changeset
|
323 |
pos = Position.default (Binding.pos_of binding), |
33096 | 324 |
id = serial ()}; |
325 |
val space' = space |> fold (add_name name) accs |> new_entry strict (name, entry); |
|
30233
6eb726e43ed1
eliminated internal stamp equality, replaced by bare-metal pointer_eq;
wenzelm
parents:
30222
diff
changeset
|
326 |
in (name, space') end; |
28860 | 327 |
|
16137 | 328 |
|
16341
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
329 |
|
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
330 |
(** name spaces coupled with symbol tables **) |
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
331 |
|
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
332 |
type 'a table = T * 'a Symtab.table; |
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
333 |
|
33091
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
334 |
fun define strict naming (binding, x) (space, tab) = |
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
335 |
let val (name, space') = declare strict naming binding space |
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
336 |
in (name, (space', Symtab.update (name, x) tab)) end; |
16341
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
337 |
|
33096 | 338 |
fun empty_table kind = (empty kind, Symtab.empty); |
28860 | 339 |
|
33091
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
340 |
fun merge_tables ((space1, tab1), (space2, tab2)) = |
d23e75d4f7da
maintain abstract entry, with position, identity etc.;
wenzelm
parents:
33049
diff
changeset
|
341 |
(merge (space1, space2), Symtab.merge (K true) (tab1, tab2)); |
16341
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
342 |
|
28991 | 343 |
fun join_tables f ((space1, tab1), (space2, tab2)) = |
344 |
(merge (space1, space2), Symtab.join f (tab1, tab2)); |
|
345 |
||
16848 | 346 |
fun ext_table (space, tab) = |
347 |
Symtab.fold (fn (name, x) => cons ((name, extern space name), x)) tab [] |
|
348 |
|> Library.sort_wrt (#2 o #1); |
|
349 |
||
350 |
fun dest_table tab = map (apfst #1) (ext_table tab); |
|
351 |
fun extern_table tab = map (apfst #2) (ext_table tab); |
|
16341
e573e5167eda
added type NameSpace.table with basic operations;
wenzelm
parents:
16262
diff
changeset
|
352 |
|
5012 | 353 |
end; |
30215
47cce3d47e62
moved name space externalization flags back to name_space.ML;
wenzelm
parents:
30213
diff
changeset
|
354 |
|
33095
bbd52d2f8696
renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
wenzelm
parents:
33091
diff
changeset
|
355 |
structure Basic_Name_Space: BASIC_NAME_SPACE = Name_Space; |
32738 | 356 |
open Basic_Name_Space; |
30215
47cce3d47e62
moved name space externalization flags back to name_space.ML;
wenzelm
parents:
30213
diff
changeset
|
357 |