Class: ExecJS::MustangRuntime::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/execjs/mustang_runtime.rb

Instance Method Summary collapse

Constructor Details

#initialize(source = "") ⇒ Context

Returns a new instance of Context.



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# File 'lib/execjs/mustang_runtime.rb', line 4

def initialize(source = "")
  source = source.encode('UTF-8') if source.respond_to?(:encode)

  @v8_context = ::Mustang::Context.new
  @v8_context.eval(source)
end

Instance Method Details

#call(properties, *args) ⇒ Object 



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# File 'lib/execjs/mustang_runtime.rb', line 27

def call(properties, *args)
  unbox @v8_context.eval(properties).call(*args)
rescue NoMethodError => e
  raise ProgramError, e.message
end

#eval(source, options = {}) ⇒ Object 



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# File 'lib/execjs/mustang_runtime.rb', line 19

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

  if /\S/ =~ source
    unbox @v8_context.eval("(#{source})")
  end
end

#exec(source, options = {}) ⇒ Object 



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# File 'lib/execjs/mustang_runtime.rb', line 11

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

  if /\S/ =~ source
    eval "(function(){#{source}})()", options
  end
end

#unbox(value) ⇒ Object 



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# File 'lib/execjs/mustang_runtime.rb', line 33

def unbox(value)
  case value
  when Mustang::V8::Array
    value.map { |v| unbox(v) }
  when Mustang::V8::Boolean
    value.to_bool
  when Mustang::V8::NullClass, Mustang::V8::UndefinedClass
    nil
  when Mustang::V8::Function
    nil
  when Mustang::V8::SyntaxError
    raise RuntimeError, value.message
  when Mustang::V8::Error
    raise ProgramError, value.message
  when Mustang::V8::Object
    value.inject({}) { |h, (k, v)|
      v = unbox(v)
      h[k] = v if v
      h
    }
  else
    value.respond_to?(:delegate) ? value.delegate : value
  end
end