module Diakonos::KeyMap
Public Instance Methods
delete_key_path( path )
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path is an array of hash keys This method deletes a path of hash keys, with each step in the path being a recursively deeper key in a hash tree. Returns the possibly modified hash.
# File lib/diakonos/key-map.rb, line 8 def delete_key_path( path ) if path.length > 1 subtree = self[ path[ 0 ] ] if subtree.respond_to?( :delete_key_path ) subtree.delete_key_path( path[ 1..-1 ] ) if subtree.empty? delete( path[ 0 ] ) end end elsif path.length == 1 delete( path[ 0 ] ) end self end
get_leaf( path )
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# File lib/diakonos/key-map.rb, line 51 def get_leaf( path ) node = get_node( path ) if node.respond_to?( :get_node ) # Only want a leaf node nil else node end end
get_node( path )
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# File lib/diakonos/key-map.rb, line 38 def get_node( path ) node = self[ path[ 0 ] ] if path.length > 1 if node && node.respond_to?( :get_node ) return node.get_node( path[ 1..-1 ] ) end elsif path.length == 1 return node end nil end
set_key_path( path, leaf )
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# File lib/diakonos/key-map.rb, line 24 def set_key_path( path, leaf ) if path.length > 1 node = self[ path[ 0 ] ] if ! node.respond_to?( :set_key_path ) node = self[ path[ 0 ] ] = {}.extend( KeyMap ) end node.set_key_path( path[ 1..-1 ], leaf ) elsif path.length == 1 self[ path[ 0 ] ] = leaf end self end