Class: Mutineer::MutatorRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/mutineer/mutator_registry.rb

Overview

Maps operator name -> operator class. DEFAULT_NAMES is the v1 default set (the M4 Tier-1 + statement-removal operators per locked decision #2). The three Tier-2 operators live in ALL but are OFF by default — they only run when named via --operators or operators: in .mutineer.yml (KTD8). Keeping DEFAULT_NAMES an explicit subset (not ALL.keys) is what keeps the M4 default survivor set unchanged.

Constant Summary collapse

ALL = 
{
  "arithmetic"         => Mutators::Arithmetic,
  "comparison"         => Mutators::Comparison,
  "boolean_connector"  => Mutators::BooleanConnector,
  "boolean_literal"    => Mutators::BooleanLiteral,
  "statement_removal"  => Mutators::StatementRemoval,
  "return_nil"         => Mutators::ReturnNil,
  "literal_mutation"   => Mutators::LiteralMutation,
  "condition_negation" => Mutators::ConditionNegation
}.freeze
DEFAULT_NAMES = 
%w[arithmetic comparison boolean_connector boolean_literal statement_removal].freeze
TIER2_NAMES = 
%w[return_nil literal_mutation condition_negation].freeze
DESCRIPTIONS = 
{
  "arithmetic"         => "+ <-> -, * <-> /, % -> *, ** -> *",
  "comparison"         => "< <-> <=, > <-> >=, == <-> !=",
  "boolean_connector"  => "&& <-> ||",
  "boolean_literal"    => "true <-> false, nil -> true",
  "statement_removal"  => "replace a non-final statement with nil",
  "return_nil"         => "replace a return / final expression with nil",
  "literal_mutation"   => "integer -> 0, 1, n+1; string -> empty",
  "condition_negation" => "wrap if/unless/ternary condition in !( ... )"
}.freeze

Class Method Summary collapse

Class Method Details

.default?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mutineer/mutator_registry.rb', line 51

def self.default?(name) = DEFAULT_NAMES.include?(name)

.resolve(names = DEFAULT_NAMES) ⇒ Object

Returns the operator classes for the given names. Unknown names raise ArgumentError immediately (caught at the CLI boundary -> exit 2).



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# File 'lib/mutineer/mutator_registry.rb', line 47

def self.resolve(names = DEFAULT_NAMES)
  names.map { |n| ALL.fetch(n) { raise ArgumentError, "Unknown operator: #{n.inspect}" } }
end

.tier(name) ⇒ Object 



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# File 'lib/mutineer/mutator_registry.rb', line 52

def self.tier(name)     = TIER2_NAMES.include?(name) ? 2 : 1