Class: Binding

Inherits:
Object show all
Defined in:
lib/core/facets/binding/op.rb,
lib/core/facets/binding/eval.rb,
lib/core/facets/binding/self.rb,
lib/core/facets/binding/caller.rb,
lib/core/facets/binding/defined.rb,
lib/core/facets/kernel/call_stack.rb,
lib/core/facets/binding/local_variables.rb

Instance Method Summary collapse

Instance Method Details

#[](x) ⇒ Object

Returns the value of some variable.

a = 2
binding["a"]  #=> 2



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# File 'lib/core/facets/binding/op.rb', line 10

def []( x )
  eval( x.to_s )
end

#[]=(l, v) ⇒ Object

Set the value of a local variable.

binding["a"] = 4
a  #=> 4



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# File 'lib/core/facets/binding/op.rb', line 19

def []=( l, v )
  eval( "lambda {|v| #{l} = v}").call( v )
end

#__callee__ ⇒ Object

Retreive the current running method.



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# File 'lib/core/facets/binding/caller.rb', line 39

def __callee__
  Kernel.eval("__callee__", self)
end

#__DIR__ ⇒ Object

Return the directory of the file in which the binding was created.



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# File 'lib/core/facets/binding/caller.rb', line 27

def __DIR__  
  File.dirname(self.__FILE__)
end

#__FILE__ ⇒ Object

Returns file name in which the binding was created.



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# File 'lib/core/facets/binding/caller.rb', line 21

def __FILE__
  Kernel.eval("__FILE__", self)
end

#__LINE__ ⇒ Object

Return the line number on which the binding was created.



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# File 'lib/core/facets/binding/caller.rb', line 15

def __LINE__
  Kernel.eval("__LINE__", self)
end

#__method__ ⇒ Object

Retreive the current running method.



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# File 'lib/core/facets/binding/caller.rb', line 33

def __method__
  Kernel.eval("__method__", self)
end

#call_stack(level = 1) ⇒ Object Also known as: callstack

Returns the call stack, in array format.



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# File 'lib/core/facets/kernel/call_stack.rb', line 50

def call_stack(level=1)
  eval( "callstack( #{level} )" )
end

#caller(skip = 0) ⇒ Object

Returns the call stack, same format as Kernel#caller()



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# File 'lib/core/facets/binding/caller.rb', line 9

def caller( skip=0 )
  eval("caller(#{skip})")
end

#defined?(x) ⇒ Boolean

Returns the nature of something within the context of the binding. Returns nil if that thing is not defined.

Returns:

  • (Boolean) 


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# File 'lib/core/facets/binding/defined.rb', line 7

def defined?(x)
  eval("defined? #{x}")
end

#eval(str) ⇒ Object

Evaluate a Ruby source code string (or block) in the binding context.



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# File 'lib/core/facets/binding/eval.rb', line 7

def eval(str)
  Kernel.eval(str, self)
end

#local_variables ⇒ Object

Returns the local variables defined in the binding context:

a = 1
b = 2

binding.local_variables  #=> [:a, :b]



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# File 'lib/core/facets/binding/local_variables.rb', line 12

def local_variables()
  eval("local_variables")
end

#self ⇒ Object

Returns self of the binding context.



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# File 'lib/core/facets/binding/self.rb', line 7

def self()
  @_self ||= eval("self")
end