Class: YAML::YPath

Class | YAML::YPath
In: | yaml/ypath.rb
Parent: | Object

### Methods

each_path new

### Attributes

flags | [RW] |
predicates | [RW] |
segments | [RW] |

### Public Class methods

each_path( str ) {|YPath.new( path )| ...}

[Source]

    # File yaml/ypath.rb, line 25
            def YPath.each_path( str )
                #
                # Find choices
                #
                paths = []
                str = "(#{ str })"
                while str.sub!( /\(([^()]+)\)/, "\n#{ paths.length }\n" )
                    paths.push $1.split( '|' )
                end

                #
                # Construct all possible paths
                #
                all = [ str ]
                ( paths.length - 1 ).downto( 0 ) do |i|
                    all = all.collect do |a|
                        paths[i].collect do |p|
                            a.gsub( /\n#{ i }\n/, p )
                        end
                    end.flatten.uniq
                end
                all.collect do |path|
                    yield YPath.new( path )
                end
            end

new( str )

[Source]

    # File yaml/ypath.rb, line 9
            def initialize( str )
                @segments = []
                @predicates = []
                @flags = nil
                while str =~ /^\/?(\/|[^\/\[]+)(?:\[([^\]]+)\])?/
                    @segments.push $1
                    @predicates.push $2
                    str = $'
                end
                unless str.to_s.empty?
                    @segments += str.split( "/" )
                end
                if @segments.length == 0
                    @segments.push "."
                end
            end

[Validate]