/******************************************************************************/
%{
+ 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.Attribute (_, _, 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
%}
%token <string> ID STR
- %token IS LC RC CM SC LP RP AT PC DL FS DQ EOF
+ %token SL IS LC RC CM SC LP RP AT PC DL FS DQ EOF
%token AND ATTR ATTRIB BE DIFF EQ EX FALSE FUN IN INTER LET MEET NOT OR
%token PAT REF REFOF REL SELECT SUB SUPER TRUE UNION WHERE
%left DIFF WHERE REFOF
%left OR UNION
%left AND INTER
- %nonassoc NOT EX IN STR ATTR
+ %nonassoc REL
+ %nonassoc NOT EX IN ATTR
+
%start qstr query result
%type <string> qstr
%type <MathQL.query> query
| vvar CM vvar_list { $1 :: $3 }
| vvar { [$1] }
;
+ qstr_path:
+ | STR SL qstr_path { $1 :: $3 }
+ | STR { [$1] }
+ ;
ref_op:
| SUB { MathQL.SubOp }
| SUPER { MathQL.SuperOp }
| { MathQL.ExactOp }
;
val_exp:
- | STR { MathQL.Const [$1] }
- | FUN STR val_exp { MathQL.Fun ($2, $3) }
- | ATTRIB ref_op STR val_exp { MathQL.Attribute ($2, $3, $4) }
- | rvar FS vvar { MathQL.Record ($1, $3) }
- | LC qstr_list RC { MathQL.Const $2 }
- | LC RC { MathQL.Const [] }
- | REFOF set_exp { MathQL.RefOf $2 }
+ | STR { MathQL.Const [$1] }
+ | FUN STR val_exp { MathQL.Fun ($2, $3) }
+ | ATTRIB ref_op qstr_path val_exp { MathQL.Attribute ($2, $3, $4) }
+ | rvar FS vvar { MathQL.Record ($1, $3) }
+ | vvar { MathQL.VVar $1 }
+ | LC qstr_list 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 $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) }
+ | 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 ref_op STR set_exp ATTR vvar_list { MathQL.Relation ($2, $3, $4, $6) }
- | REL ref_op STR set_exp { MathQL.Relation ($2, $3, $4, []) }
- | 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.Let ($2, $4, $6) }
+ | 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 ref_op qstr_path set_exp ATTR vvar_list { MathQL.Relation ($2, $3, $4, $6) }
+ | REL ref_op qstr_path set_exp { MathQL.Relation ($2, $3, $4, []) }
+ | 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 }
projects / helm.git / blobdiff