Class: Gem::Dependency

Inherits:
Micro::YAMLable show all
Defined in:
lib/microgem/dependency.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Micro::YAMLable

[], inherited

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/microgem/dependency.rb', line 7

def name
  @name
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/microgem/dependency.rb', line 7

def version
  @version
end

#version_requirements ⇒ Object (readonly)

Returns the value of attribute version_requirements.



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# File 'lib/microgem/dependency.rb', line 7

def version_requirements
  @version_requirements
end

Instance Method Details

#gem_spec ⇒ Object

Returns the Gem::Specification instance for this dependency. If the required version is ‘0’ then the latest version is used.



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# File 'lib/microgem/dependency.rb', line 20

def gem_spec
  if @gem_spec.nil?
    unless @gem_spec = Micro::Source.gem_spec(@name, @version_requirements.version)
      raise Micro::GemSpecMissingError, "Unable to locate Gem::Specification for Gem::Dependency `#{self}'"
    end
  end
  
  @gem_spec
end

#meets_requirements? ⇒ Boolean

Returns whether or not any of the installed gems matches the requirements.

For now we just compare against the last one which should be the highest.

Returns:

  • (Boolean) 


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# File 'lib/microgem/dependency.rb', line 12

def meets_requirements?
  if dirname = Micro.installed_gem_dirnames(name).last
    Gem::Version.from_gem_dirname(dirname) >= @version_requirements.version
  end
end

#to_s ⇒ Object

Returns a ‘pretty’ string representation of the Dependency instance:

dependency.to_s # => "rake >= 0.8.1"



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# File 'lib/microgem/dependency.rb', line 33

def to_s
  "#{name} #{@version_requirements}"
end