Class: Looksee::Adapter::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/looksee/adapter/base.rb

Direct Known Subclasses

Rubinius

Instance Method Summary collapse

Instance Method Details

#describe_module(mod) ⇒ Object

Return a description of the given module.

This is used for the module labels in the Inspector output.



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# File 'lib/looksee/adapter/base.rb', line 24

def describe_module(mod)
  Module === mod or
    raise TypeError, "expected Module, got: #{mod.inspect}"
  num_brackets = 0
  object = mod
  while (instance = singleton_instance(object))
    num_brackets += 1
    object = instance
  end

  if object.is_a?(Module)
    description = module_name(object)
    if description.empty?
      is_class = Class === object
      description = "unnamed #{is_class ? 'Class' : 'Module'}"
    end
  else
    description = "#{module_name(object.class)} instance"
  end

  if num_brackets == 0
    description
  else
    "#{'['*num_brackets}#{description}#{']'*num_brackets}"
  end
end

#has_no_methods?(mod) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/looksee/adapter/base.rb', line 55

def has_no_methods?(mod)
  [:public, :protected, :private].all? do |visibility|
    Looksee.safe_call(Module, "#{visibility}_instance_methods", mod, false).empty?
  end && internal_undefined_instance_methods(mod).empty?
end

#internal_undefined_instance_methods(mod) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/looksee/adapter/base.rb', line 51

def internal_undefined_instance_methods(mod)
  raise NotImplementedError, "abstract"
end

#lookup_modules(object) ⇒ Object

Return the chain of classes and modules which comprise the object’s method lookup path.



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# File 'lib/looksee/adapter/base.rb', line 8

def lookup_modules(object)
  start =
    begin
      singleton_class = (class << object; self; end)
      singleton_class unless has_no_methods?(singleton_class) && !(Class === object)
    rescue TypeError  # immediate object
    end
  start ||= Looksee.safe_call(Object, :class, object)
  start.ancestors
end

#module_name(mod) ⇒ Object 



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# File 'lib/looksee/adapter/base.rb', line 65

def module_name(mod)
  Looksee.safe_call(Module, :name, mod) || ''
end

#singleton_instance(singleton_class) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/looksee/adapter/base.rb', line 61

def singleton_instance(singleton_class)
  raise NotImplementedError, "abstract"
end