Class: XML::XXPath::NameAndAttrStep

Inherits:
Step
  • Object
show all
Defined in:
lib/xml/xxpath/steps.rb

Overview

:nodoc:

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Step

#creator, inherited, #reader

Constructor Details

#initialize(axis, name, attr_name, attr_value) ⇒ NameAndAttrStep

Returns a new instance of NameAndAttrStep.



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# File 'lib/xml/xxpath/steps.rb', line 124

def initialize(axis,name,attr_name,attr_value)
  super(axis)
  @name,@attr_name,@attr_value = name,attr_name,attr_value
end

Class Method Details

.compile(axis, string) ⇒ Object 



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# File 'lib/xml/xxpath/steps.rb', line 119

def self.compile axis, string
  /^(.*?)\[@(.*?)='(.*?)'\]$/ === string or return nil
  self.new axis,$1,$2,$3
end

Instance Method Details

#create_on(node, create_new) ⇒ Object 



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# File 'lib/xml/xxpath/steps.rb', line 133

def create_on(node,create_new)
  if create_new
    newnode = node.elements.add(@name)
  else
    newnode = node.elements.select{|elt| elt.name==@name and not(elt.attributes[@attr_name])}[0]
    if not(newnode)
      newnode = node.elements.add(@name)
    end
  end
  newnode.attributes[@attr_name]=@attr_value
  newnode
end

#matches?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/xml/xxpath/steps.rb', line 129

def matches? node
  node.is_a?(REXML::Element) and node.name==@name and node.attributes[@attr_name]==@attr_value
end