author | wenzelm |
Thu, 19 May 1994 16:15:38 +0200 | |
changeset 383 | fcea89074e4c |
parent 330 | 2fda15dd1e0f |
child 556 | 3f5f42467717 |
permissions | -rw-r--r-- |
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(* Title: Pure/Syntax/syntax.ML |
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ID: $Id$ |
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Author: Tobias Nipkow and Markus Wenzel, TU Muenchen |
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Root of Isabelle's syntax module. |
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*) |
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signature BASIC_SYNTAX = |
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sig |
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include AST0 |
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include SEXTENSION0 |
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(* include MIXFIX0 *) (* FIXME *) |
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include PRINTER0 |
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end; |
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signature SYNTAX = |
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sig |
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include AST1 |
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include LEXICON0 |
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include SYN_EXT0 |
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include TYPE_EXT0 |
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include SEXTENSION1 |
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include PRINTER0 |
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sharing type ast = Parser.SynExt.Ast.ast |
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structure Mixfix: MIXFIX |
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local open Mixfix in (* FIXME *) |
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type syntax |
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val extend_log_types: syntax -> string list -> syntax |
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val extend_type_gram: syntax -> (string * int * mixfix) list -> syntax |
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val extend_const_gram: syntax -> (string * typ * mixfix) list -> syntax |
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val extend_consts: syntax -> string list -> syntax |
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val extend_trfuns: syntax -> |
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(string * (ast list -> ast)) list * |
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(string * (term list -> term)) list * |
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(string * (term list -> term)) list * |
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(string * (ast list -> ast)) list -> syntax |
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val extend_trrules: syntax -> xrule list -> syntax |
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end (* FIXME *) |
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val extend: syntax -> (string -> typ) -> string list * string list * sext |
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-> syntax (* FIXME *) |
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val merge_syntaxes: syntax -> syntax -> syntax |
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val type_syn: syntax |
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val print_gram: syntax -> unit |
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val print_trans: syntax -> unit |
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val print_syntax: syntax -> unit |
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val test_read: syntax -> string -> string -> unit |
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val read: syntax -> typ -> string -> term |
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val read_typ: syntax -> (indexname -> sort) -> string -> typ |
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val simple_read_typ: string -> typ |
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val pretty_term: syntax -> term -> Pretty.T |
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val pretty_typ: syntax -> typ -> Pretty.T |
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val string_of_term: syntax -> term -> string |
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val string_of_typ: syntax -> typ -> string |
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val simple_string_of_typ: typ -> string |
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val simple_pprint_typ: typ -> pprint_args -> unit |
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end; |
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functor SyntaxFun(structure Symtab: SYMTAB and TypeExt: TYPE_EXT |
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and SExtension: SEXTENSION and Mixfix: MIXFIX and Printer: PRINTER |
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sharing Mixfix.SynExt = SExtension.Parser.SynExt = TypeExt.SynExt = Printer.SynExt) |
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: SYNTAX = |
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struct |
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structure SynExt = TypeExt.SynExt; |
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structure Parser = SExtension.Parser; |
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structure Lexicon = Parser.Lexicon; |
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structure Mixfix = Mixfix; |
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open Lexicon SynExt SynExt.Ast Parser TypeExt SExtension Printer; |
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(** tables of translation functions **) |
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(*the ref serves as unique id*) |
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type 'a trtab = (('a list -> 'a) * unit ref) Symtab.table; |
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val dest_trtab = Symtab.dest; |
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fun lookup_trtab tab c = |
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apsome fst (Symtab.lookup (tab, c)); |
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(* empty, extend, merge trtabs *) |
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fun err_dup_trfuns name cs = |
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error ("More than one " ^ name ^ " for " ^ commas_quote cs); |
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val empty_trtab = Symtab.null; |
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fun extend_trtab tab trfuns name = |
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Symtab.extend_new (tab, map (fn (c, f) => (c, (f, ref ()))) trfuns) |
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handle Symtab.DUPS cs => err_dup_trfuns name cs; |
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fun merge_trtabs tab1 tab2 name = |
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Symtab.merge eq_snd (tab1, tab2) |
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handle Symtab.DUPS cs => err_dup_trfuns name cs; |
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(** tables of translation rules **) |
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type ruletab = (ast * ast) list Symtab.table; |
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fun dest_ruletab tab = flat (map snd (Symtab.dest tab)); |
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(* lookup_ruletab *) |
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fun lookup_ruletab tab = |
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if Symtab.is_null tab then None |
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else Some (fn a => Symtab.lookup_multi (tab, a)); |
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(* empty, extend, merge ruletabs *) |
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val empty_ruletab = Symtab.null; |
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fun extend_ruletab tab rules = |
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generic_extend (op =) Symtab.dest_multi Symtab.make_multi tab |
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(map (fn r => (head_of_rule r, r)) (distinct rules)); |
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fun merge_ruletabs tab1 tab2 = |
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generic_merge (op =) Symtab.dest_multi Symtab.make_multi tab1 tab2; |
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(** datatype syntax **) |
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datatype syntax = |
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Syntax of { |
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lexicon: lexicon, |
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roots: string list, |
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gram: gram, |
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consts: string list, |
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parse_ast_trtab: ast trtab, |
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parse_ruletab: ruletab, |
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parse_trtab: term trtab, |
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print_trtab: term trtab, |
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print_ruletab: ruletab, |
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print_ast_trtab: ast trtab, |
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prtab: prtab}; |
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(* empty_syntax *) |
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val empty_syntax = |
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Syntax { |
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lexicon = empty_lexicon, |
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roots = [], |
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gram = empty_gram, |
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consts = [], |
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parse_ast_trtab = empty_trtab, |
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parse_ruletab = empty_ruletab, |
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parse_trtab = empty_trtab, |
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print_trtab = empty_trtab, |
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print_ruletab = empty_ruletab, |
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print_ast_trtab = empty_trtab, |
167 | 158 |
prtab = empty_prtab}; |
159 |
||
160 |
||
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(* extend_syntax *) |
167 | 162 |
|
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163 |
fun extend_syntax (Syntax tabs) syn_ext = |
167 | 164 |
let |
165 |
val {lexicon, roots = roots1, gram, consts = consts1, parse_ast_trtab, |
|
237
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166 |
parse_ruletab, parse_trtab, print_trtab, print_ruletab, print_ast_trtab, |
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prtab} = tabs; |
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val SynExt {roots = roots2, xprods, consts = consts2, parse_ast_translation, |
167 | 169 |
parse_rules, parse_translation, print_translation, print_rules, |
237
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print_ast_translation} = syn_ext; |
167 | 171 |
in |
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172 |
Syntax { |
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lexicon = extend_lexicon lexicon (delims_of xprods), |
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roots = extend_list roots1 roots2, |
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gram = extend_gram gram roots2 xprods, |
167 | 176 |
consts = consts2 union consts1, |
177 |
parse_ast_trtab = |
|
178 |
extend_trtab parse_ast_trtab parse_ast_translation "parse ast translation", |
|
179 |
parse_ruletab = extend_ruletab parse_ruletab parse_rules, |
|
180 |
parse_trtab = extend_trtab parse_trtab parse_translation "parse translation", |
|
181 |
print_trtab = extend_trtab print_trtab print_translation "print translation", |
|
182 |
print_ruletab = extend_ruletab print_ruletab print_rules, |
|
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print_ast_trtab = |
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184 |
extend_trtab print_ast_trtab print_ast_translation "print ast translation", |
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prtab = extend_prtab prtab xprods} |
18 | 186 |
end; |
187 |
||
188 |
||
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(* merge_syntaxes *) |
0 | 190 |
|
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191 |
fun merge_syntaxes (Syntax tabs1) (Syntax tabs2) = |
0 | 192 |
let |
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193 |
val {lexicon = lexicon1, roots = roots1, gram = gram1, consts = consts1, |
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parse_ast_trtab = parse_ast_trtab1, parse_ruletab = parse_ruletab1, |
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parse_trtab = parse_trtab1, print_trtab = print_trtab1, |
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print_ruletab = print_ruletab1, print_ast_trtab = print_ast_trtab1, |
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prtab = prtab1} = tabs1; |
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198 |
|
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199 |
val {lexicon = lexicon2, roots = roots2, gram = gram2, consts = consts2, |
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parse_ast_trtab = parse_ast_trtab2, parse_ruletab = parse_ruletab2, |
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201 |
parse_trtab = parse_trtab2, print_trtab = print_trtab2, |
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202 |
print_ruletab = print_ruletab2, print_ast_trtab = print_ast_trtab2, |
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prtab = prtab2} = tabs2; |
0 | 204 |
in |
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205 |
Syntax { |
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206 |
lexicon = merge_lexicons lexicon1 lexicon2, |
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roots = merge_lists roots1 roots2, |
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gram = merge_grams gram1 gram2, |
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consts = merge_lists consts1 consts2, |
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parse_ast_trtab = |
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211 |
merge_trtabs parse_ast_trtab1 parse_ast_trtab2 "parse ast translation", |
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212 |
parse_ruletab = merge_ruletabs parse_ruletab1 parse_ruletab2, |
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213 |
parse_trtab = merge_trtabs parse_trtab1 parse_trtab2 "parse translation", |
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|
214 |
print_trtab = merge_trtabs print_trtab1 print_trtab2 "print translation", |
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|
215 |
print_ruletab = merge_ruletabs print_ruletab1 print_ruletab2, |
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216 |
print_ast_trtab = |
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217 |
merge_trtabs print_ast_trtab1 print_ast_trtab2 "print ast translation", |
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218 |
prtab = merge_prtabs prtab1 prtab2} |
0 | 219 |
end; |
220 |
||
221 |
||
260 | 222 |
(* type_syn *) |
223 |
||
224 |
val type_syn = extend_syntax empty_syntax type_ext; |
|
225 |
||
226 |
||
0 | 227 |
|
237
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228 |
(** inspect syntax **) |
0 | 229 |
|
260 | 230 |
fun pretty_strs_qs name strs = |
231 |
Pretty.strs (name :: map quote (sort_strings strs)); |
|
0 | 232 |
|
18 | 233 |
|
234 |
(* print_gram *) |
|
0 | 235 |
|
237
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fun print_gram (Syntax tabs) = |
0 | 237 |
let |
237
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238 |
val {lexicon, roots, gram, ...} = tabs; |
0 | 239 |
in |
260 | 240 |
Pretty.writeln (pretty_strs_qs "lexicon:" (dest_lexicon lexicon)); |
241 |
Pretty.writeln (Pretty.strs ("roots:" :: roots)); |
|
242 |
Pretty.writeln (Pretty.big_list "prods:" (pretty_gram gram)) |
|
0 | 243 |
end; |
244 |
||
245 |
||
18 | 246 |
(* print_trans *) |
0 | 247 |
|
237
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|
248 |
fun print_trans (Syntax tabs) = |
0 | 249 |
let |
260 | 250 |
fun pretty_trtab name tab = |
251 |
pretty_strs_qs name (map fst (dest_trtab tab)); |
|
0 | 252 |
|
260 | 253 |
fun pretty_ruletab name tab = |
254 |
Pretty.big_list name (map pretty_rule (dest_ruletab tab)); |
|
0 | 255 |
|
237
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256 |
val {consts, parse_ast_trtab, parse_ruletab, parse_trtab, print_trtab, |
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|
257 |
print_ruletab, print_ast_trtab, ...} = tabs; |
0 | 258 |
in |
260 | 259 |
Pretty.writeln (pretty_strs_qs "consts:" consts); |
260 |
Pretty.writeln (pretty_trtab "parse_ast_translation:" parse_ast_trtab); |
|
261 |
Pretty.writeln (pretty_ruletab "parse_rules:" parse_ruletab); |
|
262 |
Pretty.writeln (pretty_trtab "parse_translation:" parse_trtab); |
|
263 |
Pretty.writeln (pretty_trtab "print_translation:" print_trtab); |
|
264 |
Pretty.writeln (pretty_ruletab "print_rules:" print_ruletab); |
|
265 |
Pretty.writeln (pretty_trtab "print_ast_translation:" print_ast_trtab) |
|
0 | 266 |
end; |
267 |
||
268 |
||
269 |
(* print_syntax *) |
|
270 |
||
237
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271 |
fun print_syntax syn = (print_gram syn; print_trans syn); |
0 | 272 |
|
273 |
||
274 |
||
237
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275 |
(** read **) |
18 | 276 |
|
237
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277 |
(* test_read *) |
18 | 278 |
|
237
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|
279 |
fun test_read (Syntax tabs) root str = |
18 | 280 |
let |
237
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|
281 |
val {lexicon, gram, parse_ast_trtab, parse_ruletab, ...} = tabs; |
18 | 282 |
|
283 |
val toks = tokenize lexicon false str; |
|
330
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|
284 |
val _ = writeln ("tokens: " ^ space_implode " " (map display_token toks)) |
18 | 285 |
|
383
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|
286 |
fun show_pt pt = |
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|
287 |
let |
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|
288 |
val raw_ast = pt_to_ast (K None) pt; |
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|
289 |
val _ = writeln ("raw: " ^ str_of_ast raw_ast); |
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|
290 |
val pre_ast = pt_to_ast (lookup_trtab parse_ast_trtab) pt; |
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|
291 |
val _ = normalize true true (lookup_ruletab parse_ruletab) pre_ast; |
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|
292 |
in () end; |
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|
293 |
in |
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changeset
|
294 |
seq show_pt (parse gram root toks) |
fcea89074e4c
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|
295 |
end; |
18 | 296 |
|
297 |
||
260 | 298 |
(* read_ast *) |
299 |
||
300 |
fun read_ast (Syntax tabs) xids root str = |
|
301 |
let |
|
302 |
val {lexicon, gram, parse_ast_trtab, ...} = tabs; |
|
330
2fda15dd1e0f
changed the way a grammar is generated to allow the new parser to work;
clasohm
parents:
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diff
changeset
|
303 |
val pts = parse gram root (tokenize lexicon xids str); |
2fda15dd1e0f
changed the way a grammar is generated to allow the new parser to work;
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parents:
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diff
changeset
|
304 |
|
383
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
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diff
changeset
|
305 |
fun show_pt pt = |
fcea89074e4c
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330
diff
changeset
|
306 |
writeln (str_of_ast (pt_to_ast (K None) pt)); |
260 | 307 |
in |
383
fcea89074e4c
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diff
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|
308 |
(case pts of |
fcea89074e4c
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diff
changeset
|
309 |
[pt] => pt_to_ast (lookup_trtab parse_ast_trtab) pt |
fcea89074e4c
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|
310 |
| _ => |
330
2fda15dd1e0f
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clasohm
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260
diff
changeset
|
311 |
(writeln ("Ambiguous input " ^ quote str); |
383
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
312 |
writeln "produces the following parse trees:"; seq show_pt pts; |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
313 |
error "Please disambiguate the grammar or your input.")) |
260 | 314 |
end; |
315 |
||
316 |
||
237
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|
317 |
(* read *) |
0 | 318 |
|
237
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|
319 |
fun read (syn as Syntax tabs) ty str = |
0 | 320 |
let |
237
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|
321 |
val {parse_ruletab, parse_trtab, ...} = tabs; |
18 | 322 |
val ast = read_ast syn false (typ_to_nonterm ty) str; |
0 | 323 |
in |
237
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|
324 |
ast_to_term (lookup_trtab parse_trtab) |
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|
325 |
(normalize_ast (lookup_ruletab parse_ruletab) ast) |
0 | 326 |
end; |
327 |
||
328 |
||
237
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|
329 |
(* read types *) |
0 | 330 |
|
237
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|
331 |
fun read_typ syn def_sort str = |
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|
332 |
typ_of_term def_sort (read syn typeT str); |
144 | 333 |
|
237
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|
334 |
fun simple_read_typ str = read_typ type_syn (K []) str; |
144 | 335 |
|
336 |
||
237
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|
337 |
(* read rules *) |
18 | 338 |
|
339 |
fun read_rule syn (xrule as ((_, lhs_src), (_, rhs_src))) = |
|
340 |
let |
|
237
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|
341 |
val Syntax {consts, ...} = syn; |
18 | 342 |
|
343 |
fun constantify (ast as Constant _) = ast |
|
344 |
| constantify (ast as Variable x) = |
|
345 |
if x mem consts then Constant x else ast |
|
346 |
| constantify (Appl asts) = Appl (map constantify asts); |
|
0 | 347 |
|
18 | 348 |
fun read_pat (root, str) = |
349 |
constantify (read_ast syn true root str) |
|
350 |
handle ERROR => error ("The error above occurred in " ^ quote str); |
|
351 |
||
352 |
val rule as (lhs, rhs) = (pairself read_pat) xrule; |
|
353 |
in |
|
354 |
(case rule_error rule of |
|
355 |
Some msg => |
|
356 |
error ("Error in syntax translation rule: " ^ msg ^ |
|
357 |
"\nexternal: " ^ quote lhs_src ^ " -> " ^ quote rhs_src ^ |
|
358 |
"\ninternal: " ^ str_of_ast lhs ^ " -> " ^ str_of_ast rhs) |
|
359 |
| None => rule) |
|
360 |
end; |
|
0 | 361 |
|
18 | 362 |
fun read_xrules syn xrules = |
363 |
let |
|
364 |
fun right_rule (xpat1 |-> xpat2) = Some (xpat1, xpat2) |
|
365 |
| right_rule (xpat1 <-| xpat2) = None |
|
366 |
| right_rule (xpat1 <-> xpat2) = Some (xpat1, xpat2); |
|
0 | 367 |
|
18 | 368 |
fun left_rule (xpat1 |-> xpat2) = None |
369 |
| left_rule (xpat1 <-| xpat2) = Some (xpat2, xpat1) |
|
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| left_rule (xpat1 <-> xpat2) = Some (xpat2, xpat1); |
|
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in |
|
372 |
(map (read_rule syn) (mapfilter right_rule xrules), |
|
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map (read_rule syn) (mapfilter left_rule xrules)) |
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end; |
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375 |
||
376 |
||
377 |
||
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(** pretty terms or typs **) |
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||
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fun pretty_t t_to_ast pretty_t (syn as Syntax tabs) t = |
0 | 381 |
let |
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val {print_trtab, print_ruletab, print_ast_trtab, prtab, ...} = tabs; |
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val ast = t_to_ast (lookup_trtab print_trtab) t; |
0 | 384 |
in |
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pretty_t prtab (lookup_trtab print_ast_trtab) |
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(normalize_ast (lookup_ruletab print_ruletab) ast) |
0 | 387 |
end; |
388 |
||
389 |
val pretty_term = pretty_t term_to_ast pretty_term_ast; |
|
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val pretty_typ = pretty_t typ_to_ast pretty_typ_ast; |
|
391 |
||
392 |
fun string_of_term syn t = Pretty.string_of (pretty_term syn t); |
|
260 | 393 |
fun string_of_typ syn ty = Pretty.string_of (pretty_typ syn ty); |
0 | 394 |
|
260 | 395 |
val simple_string_of_typ = string_of_typ type_syn; |
396 |
val simple_pprint_typ = Pretty.pprint o Pretty.quote o (pretty_typ type_syn); |
|
0 | 397 |
|
398 |
||
399 |
||
383
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400 |
(** extend syntax (external interfaces) **) |
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|
401 |
|
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402 |
(* FIXME -> syn_ext.ML *) |
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|
403 |
fun syn_ext_const_names roots cs = |
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syn_ext roots [] [] cs ([], [], [], []) ([], []); |
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changeset
|
405 |
|
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parents:
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changeset
|
406 |
(* FIXME -> syn_ext.ML *) |
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changeset
|
407 |
fun syn_ext_trfuns roots trfuns = |
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changeset
|
408 |
syn_ext roots [] [] [] trfuns ([], []); |
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added incremental extension functions: extend_log_types, extend_type_gram,
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parents:
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diff
changeset
|
409 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
410 |
|
fcea89074e4c
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parents:
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diff
changeset
|
411 |
fun ext_syntax mk_syn_ext (syn as Syntax {roots, ...}) decls = |
fcea89074e4c
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parents:
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diff
changeset
|
412 |
extend_syntax syn (mk_syn_ext roots decls); |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
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parents:
330
diff
changeset
|
413 |
|
167 | 414 |
|
383
fcea89074e4c
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parents:
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diff
changeset
|
415 |
fun extend_log_types (syn as Syntax {roots, ...}) all_roots = |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
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parents:
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diff
changeset
|
416 |
extend_syntax syn (syn_ext_roots all_roots (all_roots \\ roots)); |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
417 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
418 |
val extend_type_gram = ext_syntax Mixfix.syn_ext_types; |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
419 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
420 |
val extend_const_gram = ext_syntax Mixfix.syn_ext_consts; |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
421 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
422 |
val extend_consts = ext_syntax syn_ext_const_names; |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
423 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
424 |
val extend_trfuns = ext_syntax syn_ext_trfuns; |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
425 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
426 |
fun extend_trrules syn xrules = |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
427 |
ext_syntax syn_ext_rules syn (read_xrules syn xrules); |
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
428 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
429 |
|
fcea89074e4c
added incremental extension functions: extend_log_types, extend_type_gram,
wenzelm
parents:
330
diff
changeset
|
430 |
(* extend *) (* FIXME remove *) |
167 | 431 |
|
237
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175
diff
changeset
|
432 |
fun extend syn0 read_ty (all_roots, xconsts, sext) = |
a7d3e712767a
MAJOR INTERNAL CHANGE: extend and merge operations of syntax tables
wenzelm
parents:
175
diff
changeset
|
433 |
let |
a7d3e712767a
MAJOR INTERNAL CHANGE: extend and merge operations of syntax tables
wenzelm
parents:
175
diff
changeset
|
434 |
val Syntax {roots, ...} = syn0; |
174 | 435 |
|
237
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parents:
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diff
changeset
|
436 |
val syn1 = extend_syntax syn0 |
330
2fda15dd1e0f
changed the way a grammar is generated to allow the new parser to work;
clasohm
parents:
260
diff
changeset
|
437 |
(syn_ext_of_sext all_roots (all_roots \\ roots) xconsts read_ty sext); |
167 | 438 |
|
237
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wenzelm
parents:
175
diff
changeset
|
439 |
val syn2 = extend_syntax syn1 |
330
2fda15dd1e0f
changed the way a grammar is generated to allow the new parser to work;
clasohm
parents:
260
diff
changeset
|
440 |
(syn_ext_rules all_roots (read_xrules syn1 (xrules_of sext))); |
237
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parents:
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diff
changeset
|
441 |
in syn2 end; |
0 | 442 |
|
443 |
||
444 |
end; |
|
445 |