Class: Binding

Inherits:
Object show all
Defined in:
opal/opal/corelib/binding.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(jseval, scope_variables, receiver, source_location) ⇒ Binding

Returns a new instance of Binding.



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# File 'opal/opal/corelib/binding.rb', line 3

def initialize(jseval, scope_variables, receiver, source_location)
  @jseval, @scope_variables, @receiver, @source_location = \
    jseval, scope_variables, receiver, source_location
end

Instance Attribute Details

#receiver ⇒ Object (readonly)

Returns the value of attribute receiver.



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# File 'opal/opal/corelib/binding.rb', line 40

def receiver
  @receiver
end

#source_location ⇒ Object (readonly)

Returns the value of attribute source_location.



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# File 'opal/opal/corelib/binding.rb', line 40

def source_location
  @source_location
end

Instance Method Details

#eval(str, file = nil, line = nil) ⇒ Object 



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# File 'opal/opal/corelib/binding.rb', line 34

def eval(str, file = nil, line = nil)
  return receiver if str == 'self'

  Kernel.eval(str, self, file, line)
end

#js_eval(*args) ⇒ Object 



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# File 'opal/opal/corelib/binding.rb', line 8

def js_eval(*args)
  if @jseval
    @jseval.call(*args)
  else
    raise 'Evaluation on a Proc#binding is not supported'
  end
end

#local_variable_defined?(value) ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/binding.rb', line 30

def local_variable_defined?(value)
  @scope_variables.include?(value)
end

#local_variable_get(symbol) ⇒ Object 



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# File 'opal/opal/corelib/binding.rb', line 16

def local_variable_get(symbol)
  js_eval(symbol)
rescue Exception
  raise NameError, "local variable `#{symbol}' is not defined for #{inspect}"
end

#local_variable_set(symbol, value) ⇒ Object 



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# File 'opal/opal/corelib/binding.rb', line 22

def local_variable_set(symbol, value)
  js_eval(symbol, value)
end

#local_variables ⇒ Object 



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# File 'opal/opal/corelib/binding.rb', line 26

def local_variables
  @scope_variables
end