106 lines
2.2 KiB
Ruby
106 lines
2.2 KiB
Ruby
module Mutant
|
|
class Context
|
|
# Constant context for mutation (Class or Module)
|
|
class Constant < Context
|
|
include Veritas::Immutable
|
|
|
|
private_class_method :new
|
|
|
|
TABLE = {
|
|
::Class => ['class', Rubinius::AST::ClassScope],
|
|
::Module => ['module', Rubinius::AST::ModuleScope]
|
|
}.freeze
|
|
|
|
# Build constant from class or module
|
|
#
|
|
# @param [::Class|::Module] value
|
|
#
|
|
# @return [Constant]
|
|
#
|
|
# @api private
|
|
#
|
|
def self.build(value)
|
|
arguments = TABLE.fetch(value.class) do
|
|
raise ArgumentError, 'Can only build constant mutation scope from class or module'
|
|
end
|
|
|
|
new(value, *arguments)
|
|
end
|
|
|
|
# Return ast wrapping mutated node
|
|
#
|
|
# @return [Rubinius::AST::Script]
|
|
#
|
|
# @api private
|
|
#
|
|
def root(node)
|
|
root = root_ast
|
|
root.body = @scope_class.new(1, root.name, node)
|
|
Rubinius::AST::Script.new(root)
|
|
end
|
|
|
|
# Return unqualified name of constant
|
|
#
|
|
# @return [String]
|
|
#
|
|
# @api private
|
|
#
|
|
def unqualified_name
|
|
name_nesting.last
|
|
end
|
|
|
|
private
|
|
|
|
# Return constant wrapped by context
|
|
#
|
|
# @return [::Module|::Class]
|
|
#
|
|
# @api private
|
|
#
|
|
attr_reader :constant
|
|
private :constant
|
|
|
|
# Initialize object
|
|
#
|
|
# @param [Object] constant
|
|
#
|
|
# @api private
|
|
#
|
|
def initialize(constant, keyword, scope_class)
|
|
@constant, @keyword, @scope_class = constant, keyword, scope_class
|
|
end
|
|
|
|
# Return new root ast
|
|
#
|
|
# @return [Rubinius::AST::Node]
|
|
#
|
|
# @api private
|
|
#
|
|
def root_ast
|
|
"#{@keyword} #{qualified_name}; end".to_ast
|
|
end
|
|
|
|
# Return qualified name of constant
|
|
#
|
|
# @return [String]
|
|
#
|
|
# @api private
|
|
#
|
|
def qualified_name
|
|
@constant.name
|
|
end
|
|
|
|
# Return nesting of names of constant
|
|
#
|
|
# @return [Array<String>]
|
|
#
|
|
# @api private
|
|
#
|
|
def name_nesting
|
|
@constant.name.split('::')
|
|
end
|
|
|
|
memoize :unqualified_name
|
|
end
|
|
end
|
|
end
|