- | 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.LetSVar ($2, $4, $6) }
- | LET vvar BE val_exp IN set_exp { MathQL.LetVVar ($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) }