Update Documenter, fix errors/warnings

Author: ReubenJ

docs/Project.toml

@@ -1,5 +1,6 @@
 [deps]
+AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 
 [compat]
-Documenter = "0.26"
+Documenter = "1.4"

docs/src/index.md

@@ -85,6 +85,7 @@ Types with the `IndexedChildren` trait *must* return an indexable object from `c
 NodeType
 NodeTypeUnknown
 HasNodeType
+nodetype
 ```
 
 Providing the `HasNodeType` trait will guarantee that all nodes connected to the node must be of the
@@ -180,12 +181,18 @@ ischild
 isroot
 intree
 isdescendant
+treesize
 treebreadth
 treeheight
 descendleft
 getroot
-printtree
+print_tree
 printnode
+print_child_key
+TreeCharSet
+shouldprintkeys
+repr_tree
+repr_node
 ```
 
 ## Example Implementations

docs/src/iteration.md

@@ -34,6 +34,7 @@ PostOrderDFS
 Leaves
 Siblings
 StatelessBFS
+MapNode
 treemap
 ```
 
@@ -56,4 +57,6 @@ instance
 initial
 next
 statetype
+ascend
+descend
 ```

src/AbstractTrees.jl

@@ -1,11 +1,3 @@
-"""
-    AbstractTrees
-
-This package is intended to provide an abstract interface for working
-with tree structures.
-Though the package itself is not particularly sophisticated, it defines
-the interface that can be used by other packages to talk about trees.
-"""
 module AbstractTrees
 
 using Base: HasLength, SizeUnknown, HasEltype, EltypeUnknown

src/base.jl

@@ -2,7 +2,7 @@
 """
     nodevalue(node)
 
-Get the value associated with a node in a tree.  This removes wrappers such as [`Indexed`](@ref) or [`TreeCursor`](@ref)s.
+Get the value associated with a node in a tree.  This removes wrappers such as [`IndexNode`](@ref) or [`TreeCursor`](@ref)s.
 
 By default, this function is the identity.
 

src/iteration.jl

@@ -36,7 +36,7 @@ Obtain the next [`IteratorState`](@ref) after the current one.  If `s` is the fi
 `nothing`.
 
 This provides an alternative iteration protocol which only uses the states directly as opposed to
-[`Base.iterate`](@ref) which takes an iterator object and the current state as separate arguments.
+`Base.iterate` which takes an iterator object and the current state as separate arguments.
 """
 function next end
 

src/printing.jl

@@ -19,7 +19,7 @@ signature `g(io::IO, key;)`.
   truncated nodes.
 * `charset::TreeCharSet` - [`TreeCharSet`](@ref) to use to print branches.
 * `printkeys::Union{Bool, Nothing}` - Whether to print keys of child nodes (using
-  `pairs(children(node))`). A value of `nothing` uses [`printkeys_default`](@ref) do decide the
+  `pairs(children(node))`). A value of `nothing` uses [`shouldprintkeys`](@ref) to decide the
   behavior on a node-by-node basis.
 * `printnode_kw = (;)` - keyword arguments to forward to `f`.