+++ /dev/null
-/* Copyright (C) 2000, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
- */
-
-/******************************************************************************/
-/* */
-/* PROJECT HELM */
-/* */
-/* Ferruccio Guidi <fguidi@cs.unibo.it> */
-/* 23/05/2002 */
-/* */
-/* */
-/******************************************************************************/
-
-%{
- let analyze x =
- let module M = MathQL in
- let rec join l1 l2 = match l1, l2 with
- | [], _ -> l2
- | _, [] -> l1
- | s1 :: tl1, s2 :: _ when s1 < s2 -> s1 :: join tl1 l2
- | s1 :: _, s2 :: tl2 when s2 < s1 -> s2 :: join l1 tl2
- | s1 :: tl1, s2 :: tl2 -> s1 :: join tl1 tl2
- in
- let rec an_val = function
- | M.Const _ -> []
- | M.VVar _ -> []
- | M.Record (rv, _) -> [rv]
- | M.Fun (_, x) -> an_val x
- | M.Property (_, _, _, x) -> an_val x
- | M.RefOf x -> an_set x
- and an_boole = function
- | M.False -> []
- | M.True -> []
- | M.Ex _ -> []
- | M.Not x -> an_boole x
- | M.And (x, y) -> join (an_boole x) (an_boole y)
- | M.Or (x, y) -> join (an_boole x) (an_boole y)
- | M.Sub (x, y) -> join (an_val x) (an_val y)
- | M.Meet (x, y) -> join (an_val x) (an_val y)
- | M.Eq (x, y) -> join (an_val x) (an_val y)
- and an_set = function
- | M.SVar _ -> []
- | M.RVar _ -> []
- | M.Relation (_, _, _, x, _) -> an_set x
- | M.Pattern x -> an_val x
- | M.Ref x -> an_val x
- | M.Union (x, y) -> join (an_set x) (an_set y)
- | M.Intersect (x, y) -> join (an_set x) (an_set y)
- | M.Diff (x, y) -> join (an_set x) (an_set y)
- | M.LetSVar (_, x, y) -> join (an_set x) (an_set y)
- | M.LetVVar (_, x, y) -> join (an_val x) (an_set y)
- | M.Select (_, x, y) -> join (an_set x) (an_boole y)
- in
- an_boole x
-
- let path_of_vvar v = (v, [])
-%}
- %token <string> ID STR
- %token SL IS LC RC CM SC LP RP AT PC DL FS DQ GETS EOF
- %token AND ATTR BE DIFF EQ EX FALSE FUN IN INTER INV LET MEET NOT OR PAT
- %token PROP REF REFOF REL SELECT SUB SUPER TRUE UNION WHERE
- %left DIFF WHERE REFOF
- %left OR UNION
- %left AND INTER
- %nonassoc REL
- %nonassoc NOT EX IN ATTR
-
- %start qstr query result
- %type <string> qstr
- %type <MathQL.query> query
- %type <MathQL.result> result
-%%
- qstr:
- | DQ { "" }
- | STR qstr { $1 ^ $2 }
- ;
- svar:
- | PC ID { $2 }
- ;
- rvar:
- | AT ID { $2 }
- ;
- vvar:
- | DL ID { $2 }
- ;
- strs:
- | STR CM strs { $1 :: $3 }
- | STR { [$1] }
- ;
- subpath:
- | STR SL subpath { $1 :: $3 }
- | STR { [$1] }
- ;
- path:
- | STR SL subpath { ($1, $3) }
- | STR { ($1, []) }
- ;
- inv:
- | INV { true }
- | { false }
- ;
- ref:
- | SUB { MathQL.RefineSub }
- | SUPER { MathQL.RefineSuper }
- | { MathQL.RefineExact }
- ;
- assign:
- | vvar GETS path { (path_of_vvar $1, $3) }
- ;
- assigns:
- | assign CM assigns { $1 :: $3 }
- | assign { [$1] }
- ;
- val_exp:
- | STR { MathQL.Const [$1] }
- | FUN STR val_exp { MathQL.Fun ($2, $3) }
- | PROP inv ref path val_exp { MathQL.Property ($2, $3, $4, $5) }
- | rvar FS vvar { MathQL.Record ($1, path_of_vvar $3) }
- | vvar { MathQL.VVar $1 }
- | LC strs RC { MathQL.Const $2 }
- | LC RC { MathQL.Const [] }
- | REFOF set_exp { MathQL.RefOf $2 }
- | LP val_exp RP { $2 }
- ;
- boole_exp:
- | TRUE { MathQL.True }
- | FALSE { MathQL.False }
- | LP boole_exp RP { $2 }
- | NOT boole_exp { MathQL.Not $2 }
- | EX boole_exp { MathQL.Ex (analyze $2) $2 }
- | val_exp SUB val_exp { MathQL.Sub ($1, $3) }
- | val_exp MEET val_exp { MathQL.Meet ($1, $3) }
- | val_exp EQ val_exp { MathQL.Eq ($1, $3) }
- | boole_exp AND boole_exp { MathQL.And ($1, $3) }
- | boole_exp OR boole_exp { MathQL.Or ($1, $3) }
- ;
- set_exp:
- | REF val_exp { MathQL.Ref $2 }
- | PAT val_exp { MathQL.Pattern $2 }
- | LP set_exp RP { $2 }
- | SELECT rvar IN set_exp WHERE boole_exp { MathQL.Select ($2, $4, $6) }
- | REL inv ref path val_exp ATTR assigns { MathQL.Relation ($2, $3, $4, MathQL.Ref $5, $7) }
- | REL inv ref path val_exp { MathQL.Relation ($2, $3, $4, MathQL.Ref $5, []) }
- | svar { MathQL.SVar $1 }
- | rvar { MathQL.RVar $1 }
- | set_exp UNION set_exp { MathQL.Union ($1, $3) }
- | set_exp INTER set_exp { MathQL.Intersect ($1, $3) }
- | set_exp DIFF set_exp { MathQL.Diff ($1, $3) }
- | LET svar BE set_exp IN set_exp { MathQL.LetSVar ($2, $4, $6) }
- | LET vvar BE val_exp IN set_exp { MathQL.LetVVar ($2, $4, $6) }
- ;
- query:
- | set_exp EOF { $1 }
- ;
- attr:
- | vvar IS strs { (path_of_vvar $1, $3) }
- | vvar { (path_of_vvar $1, []) }
- ;
- attrs:
- | attr SC attrs { $1 :: $3 }
- | attr { [$1] }
- ;
- group:
- LC attrs RC { $2 }
- ;
- groups:
- | group CM groups { $1 :: $3 }
- | group { [$1] }
- ;
- resource:
- | STR ATTR groups { ($1, $3) }
- | STR { ($1, []) }
- ;
- resources:
- | resource SC resources { $1 :: $3 }
- | resource { [$1] }
- | { [] }
- ;
- result:
- | resources EOF { $1 }
projects / helm.git / blobdiff