Module: XPath

Extended by:
XPath
Included in:
XPath, Expression, HTML
Defined in:
lib/xpath.rb,
lib/xpath/html.rb,
lib/xpath/union.rb,
lib/xpath/version.rb,
lib/xpath/expression.rb

Defined Under Namespace

Modules: HTML Classes: Expression, Union

Constant Summary collapse

VERSION = 
'0.1.4'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.generate {|Expression::Self.new| ... } ⇒ Object

Yields:



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# File 'lib/xpath.rb', line 10

def self.generate
  yield(Expression::Self.new)
end

Instance Method Details

#anywhere(expression) ⇒ Object 



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# File 'lib/xpath.rb', line 30

def anywhere(expression)
  Expression::Anywhere.new(expression)
end

#attr(expression) ⇒ Object 



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# File 'lib/xpath.rb', line 34

def attr(expression)
  Expression::Attribute.new(current, expression)
end

#child(*expressions) ⇒ Object 



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# File 'lib/xpath.rb', line 26

def child(*expressions)
  Expression::Child.new(current, expressions)
end

#contains(expression) ⇒ Object 



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# File 'lib/xpath.rb', line 38

def contains(expression)
  Expression::Contains.new(current, expression)
end

#css(selector) ⇒ Object 



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# File 'lib/xpath.rb', line 58

def css(selector)
  paths = Nokogiri::CSS.xpath_for(selector).map do |selector|
    Expression::CSS.new(current, Expression::Literal.new(selector))
  end
  Union.new(*paths)
end

#current ⇒ Object 



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# File 'lib/xpath.rb', line 14

def current
  Expression::Self.new
end

#descendant(*expressions) ⇒ Object 



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# File 'lib/xpath.rb', line 22

def descendant(*expressions)
  Expression::Descendant.new(current, expressions)
end

#name ⇒ Object 



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# File 'lib/xpath.rb', line 18

def name
  Expression::Name.new(current)
end

#string ⇒ Object 



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# File 'lib/xpath.rb', line 50

def string
  Expression::StringFunction.new(current)
end

#tag(name) ⇒ Object 



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# File 'lib/xpath.rb', line 54

def tag(name)
  Expression::Tag.new(name)
end

#text ⇒ Object 



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# File 'lib/xpath.rb', line 42

def text
  Expression::Text.new(current)
end

#var(name) ⇒ Object 



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# File 'lib/xpath.rb', line 46

def var(name)
  Expression::Variable.new(name)
end

#varstring(name) ⇒ Object 



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# File 'lib/xpath.rb', line 65

def varstring(name)
  var(name).string_literal
end