Class: Less::JavaScript::RhinoContext

Inherits:
Object
  • Object
show all
Defined in:
lib/less/java_script/rhino_context.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(globals = nil) ⇒ RhinoContext

Returns a new instance of RhinoContext.



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# File 'lib/less/java_script/rhino_context.rb', line 21

def initialize(globals = nil)
  @rhino_context = Rhino::Context.new :java => true
  if @rhino_context.respond_to?(:version)
    @rhino_context.version = '1.8'
    apply_1_8_compatibility! if @rhino_context.version.to_s != '1.8'
  else
    apply_1_8_compatibility!
  end
  globals.each { |key, val| @rhino_context[key] = val } if globals
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, *args) ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 62

def method_missing(symbol, *args)
  if @rhino_context.respond_to?(symbol)
    @rhino_context.send(symbol, *args)
  else
    super
  end
end

Class Method Details

.instance ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 17

def self.instance
  return new # NOTE: for Rhino a context should be kept open per thread !
end

Instance Method Details

#call(properties, *args) ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 52

def call(properties, *args)
  options = args.last.is_a?(::Hash) ? args.pop : {} # extract_option!

  source_name = options[:source_name] || "<eval>"
  line_number = options[:line_number] || 1
  @rhino_context.eval(properties, source_name, line_number).call(*args)
rescue Rhino::JSError => e
  handle_js_error(e)
end

#eval(source, options = {}) ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 42

def eval(source, options = {})
  source = source.encode('UTF-8') if source.respond_to?(:encode)

  source_name = options[:source_name] || "<eval>"
  line_number = options[:line_number] || 1
  @rhino_context.eval("(#{source})", source_name, line_number)
rescue Rhino::JSError => e
  handle_js_error(e)
end

#exec(&block) ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 36

def exec(&block)
  @rhino_context.open(&block)
rescue Rhino::JSError => e
  handle_js_error(e)
end

#unwrap ⇒ Object 



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# File 'lib/less/java_script/rhino_context.rb', line 32

def unwrap
  @rhino_context
end