Generic syntax tree handling functions

- class Foldable tree => IsTree tree where
- toksAfter :: Foldable t1 => t -> t1 a -> [a]
- allToks :: Foldable t => t a -> [a]
- tokAtOrBefore :: Foldable t => Point -> t (Tok t1) -> Maybe (Tok t1)
- toksInRegion :: Foldable t1 => Region -> t1 (Tok t) -> [Tok t]
- sepBy :: Alternative f => f a -> f v -> f [a]
- sepBy1 :: Alternative f => f a -> f v -> f [a]
- getLastOffset :: Foldable t => t (Tok t1) -> Point
- getFirstOffset :: Foldable t => t (Tok t1) -> Point
- getFirstElement :: Foldable t => t a -> Maybe a
- getLastElement :: Foldable t => t a -> Maybe a
- getLastPath :: IsTree tree => [tree (Tok t)] -> Point -> Maybe [tree (Tok t)]
- getAllSubTrees :: IsTree tree => tree t -> [tree t]
- tokenBasedAnnots :: Foldable t1 => (a1 -> Maybe a) -> t1 a1 -> t -> [a]
- tokenBasedStrokes :: Foldable t3 => (a -> b) -> t3 a -> t -> t2 -> t1 -> [b]
- subtreeRegion :: Foldable t => t (Tok t1) -> Region
- fromLeafToLeafAfter :: IsTree tree => Point -> Node (tree (Tok a)) -> Node (tree (Tok a))
- fromNodeToFinal :: IsTree tree => Region -> Node (tree (Tok a)) -> Node (tree (Tok a))

# Documentation

sepBy :: Alternative f => f a -> f v -> f [a]Source

sepBy1 :: Alternative f => f a -> f v -> f [a]Source

getLastOffset :: Foldable t => t (Tok t1) -> PointSource

getFirstOffset :: Foldable t => t (Tok t1) -> PointSource

getFirstElement :: Foldable t => t a -> Maybe aSource

Return the 1st token of a subtree.

getLastElement :: Foldable t => t a -> Maybe aSource

Return the last token of a subtree.

getLastPath :: IsTree tree => [tree (Tok t)] -> Point -> Maybe [tree (Tok t)]Source

Search the given list, and return the last tree before the given point; with path to the root. (Root is at the start of the path)

getAllSubTrees :: IsTree tree => tree t -> [tree t]Source

Return all subtrees in a tree, in preorder.

tokenBasedAnnots :: Foldable t1 => (a1 -> Maybe a) -> t1 a1 -> t -> [a]Source

tokenBasedStrokes :: Foldable t3 => (a -> b) -> t3 a -> t -> t2 -> t1 -> [b]Source

subtreeRegion :: Foldable t => t (Tok t1) -> RegionSource

fromLeafToLeafAfter :: IsTree tree => Point -> Node (tree (Tok a)) -> Node (tree (Tok a))Source

Search the tree in pre-order starting at a given node, until finding a leaf which is at
or after the given point. An effort is also made to return a leaf as close as possible to `p`

.
TODO: rename to fromLeafToLeafAt