143 lines
2.9 KiB
Ruby
143 lines
2.9 KiB
Ruby
module Mutant
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class Context
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# Scope context for mutation (Class or Module)
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class Scope < self
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include Adamantium::Flat, Equalizer.new(:scope, :source_path)
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# Return AST wrapping mutated node
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#
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# @return [Rubinius::AST::Script]
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#
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# @api private
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#
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def root(node)
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nesting.reverse.inject(node) do |current, scope|
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self.class.wrap(scope, current)
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end
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end
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# Wrap node into ast node
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#
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# @param [Class, Module] scope
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# @param [Rubinius::AST::Node] node
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#
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# @return [Rubinius::AST::Class]
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# if scope is of kind Class
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#
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# @return [Rubinius::AST::Module]
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# if scope is of kind module
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#
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# @api private
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#
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def self.wrap(scope, node)
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name = scope.name.split('::').last.to_sym
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case scope
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when ::Class
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::Rubinius::AST::Class.new(0, name, nil, node)
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when ::Module
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::Rubinius::AST::Module.new(0, name, node)
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else
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raise "Cannot wrap scope: #{scope.inspect}"
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end
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end
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# Return nesting
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#
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# @return [Enumerable<Class,Module>]
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#
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# @api private
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#
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def nesting
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const = ::Object
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name_nesting.each_with_object([]) do |name, nesting|
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const = const.const_get(name)
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nesting << const
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end
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end
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memoize :nesting
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# Return unqualified name of scope
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#
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# @return [String]
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#
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# @api private
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#
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def unqualified_name
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name_nesting.last
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end
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# Return scope wrapped by context
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#
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# @return [::Module|::Class]
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#
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# @api private
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#
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attr_reader :scope
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private
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# Initialize object
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#
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# @param [Object] scope
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# @param [String] source_path
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#
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# @api private
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#
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def initialize(scope, source_path)
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super(source_path)
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@scope = scope
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end
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# Return scope AST class
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#
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# @return [Rubinius::AST::Node]
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#
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# @api private
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#
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def scope_class
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self.class::SCOPE_CLASS
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end
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# Return keyword
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#
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# @return [Rubinius::AST::Node]
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#
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# @api private
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#
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def keyword
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self.class::KEYWORD
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end
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# Return new root ast
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#
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# @return [Rubinius::AST::Node]
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#
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# @api private
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#
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def root_ast
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"#{keyword} #{qualified_name}; end".to_ast
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end
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# Return qualified name of scope
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#
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# @return [String]
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#
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# @api private
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#
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def qualified_name
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scope.name
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end
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# Return nesting of names of scope
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#
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# @return [Array<String>]
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#
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# @api private
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#
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def name_nesting
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scope.name.split('::')
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end
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memoize :name_nesting
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end
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end
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end
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