- let string_below t id =
- let strid = parent_doc t.doc id in
- match t.node with
- | Node(NC(i)) ->
- (Tree.equal i strid) || (is_ancestor t.doc i strid)
- | Node(SC(i,_)) -> Text.equal i id
- | _ -> false
-
-
- let tagged_foll t tag =
- if tag = Tag.attribute || tag = Tag.pcdata then failwith "tagged_foll"
- else match t with
- | { doc=d; node=Node(NC n) } -> { t with node = norm (tagged_foll d n tag) }
- | { doc=d; node=Node(SC (_,n)) } when is_nil n -> { t with node= Nil }
- | { doc=d; node=Node(SC (_,n)) } ->
- let nnode =
- if tag_id d n == tag then n
- else
- let n' = tagged_desc d n tag in
- if is_nil n' then tagged_foll d n tag
- else n'
- in {t with node= norm nnode}
- | _ -> { t with node=Nil }
-
-
- let tagged_desc t tag =
- if tag = Tag.attribute || tag = Tag.pcdata then failwith "tagged_desc"
- else match t with
- | { doc=d; node=Node(NC n) } -> { t with node = norm (tagged_desc d n tag) }
- | _ -> { t with node=Nil }
-
-
- let tagged_next t tb tf s =
- match s with
- | { node = Node (NC(below)) } -> begin
- match t with
- | { doc = d; node=Node(NC n) } ->
- { t with node= norm (tagged_next d n (Ptset.to_int_vector tb) (Ptset.to_int_vector tf) below) }
- | { doc = d; node=Node(SC (i,n) ) } when is_nil n ->
- let p = parent_doc d i in
- { t with node= norm (tagged_next d p (Ptset.to_int_vector tb) (Ptset.to_int_vector tf) below) }
- | { doc = d; node=Node(SC (_,n) ) } ->
- if Ptset.mem (tag_id d n) (Ptset.union tb tf)
- then { t with node=Node(NC(n)) }
- else
- let vb = Ptset.to_int_vector tb in
- let vf = Ptset.to_int_vector tf in
- let node =
- let dsc = tagged_below d n vb vf in
- if is_nil dsc
- then tagged_next d n vb vf below
- else dsc
- in
- { t with node = norm node }
- | _ -> {t with node=Nil }
- end
-
- | _ -> {t with node=Nil }
-
- let tagged_foll_only t tf s =
- match s with
- | { node = Node (NC(below)) } -> begin
- match t with
- | { doc = d; node=Node(NC n) } ->
- { t with node= norm (tagged_foll_only d n (Ptset.to_int_vector tf) below) }
- | { doc = d; node=Node(SC (i,n) ) } when is_nil n ->
- let p = parent_doc d i in
- { t with node= norm (tagged_foll_only d p (Ptset.to_int_vector tf) below) }
- | { doc = d; node=Node(SC (_,n) ) } ->
- if Ptset.mem (tag_id d n) tf
- then { t with node=Node(NC(n)) }
- else
- let vf = Ptset.to_int_vector tf in
- let node =
- let dsc = tagged_desc_only d n vf in
- if is_nil dsc
- then tagged_foll_only d n vf below
- else dsc
- in
- { t with node = norm node }
- | _ -> {t with node=Nil }
- end
-
- | _ -> {t with node=Nil }
-
-
- let tagged_below t tc td =
- match t with
- | { doc = d; node=Node(NC n) } ->
- let vc = Ptset.to_int_vector tc
- in
- let vd = Ptset.to_int_vector td
- in
- { t with node= norm(tagged_below d n vc vd) }
- | _ -> { t with node=Nil }
-
- let tagged_desc_only t td =
- match t with
- | { doc = d; node=Node(NC n) } ->
- let vd = Ptset.to_int_vector td
- in
- { t with node= norm(tagged_desc_only d n vd) }
- | _ -> { t with node=Nil }