Class: Hashira::Complexity::CognitiveScore

Inherits:
Object
  • Object
show all
Defined in:
lib/hashira/complexity/cognitive_score.rb

Constant Summary collapse

HANDLERS = 
{ Prism::IfNode => :on_if, Prism::BeginNode => :on_begin, Prism::BlockNode => :on_block }
.merge(Prism::AndNode => :on_boolean, Prism::OrNode => :on_boolean, Prism::CallNode => :on_call)
.merge(Prism::UnlessNode => :on_nester, Prism::WhileNode => :on_nester, Prism::UntilNode => :on_nester)
.merge(Prism::ForNode => :on_nester, Prism::CaseNode => :on_nester, Prism::CaseMatchNode => :on_nester)
.freeze
LABELS = 
{ Prism::UnlessNode => "unless", Prism::WhileNode => "while", Prism::UntilNode => "until" }
.merge(Prism::ForNode => "for", Prism::CaseNode => "case", Prism::CaseMatchNode => "case").freeze

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ CognitiveScore

Returns a new instance of CognitiveScore.



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# File 'lib/hashira/complexity/cognitive_score.rb', line 15

def initialize(node)
  @node = node
end

Instance Method Details

#add(node, cost, label) ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 41

def add(node, cost, label)
  @_increments << Hashira::Complexity::Increment.new(line: node.location.start_line, cost:, label:)
end

#calls ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 24

def calls
  walked
  @_calls
end

#deeper ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 45

def deeper
  @_nesting += 1
  yield
  @_nesting -= 1
end

#increments ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 19

def increments
  walked
  @_increments
end

#nesting ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 29

def nesting
  walked
  @_nesting
end

#total ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 34

def total = increments.sum(&:cost)

#visit(node) ⇒ Object 



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# File 'lib/hashira/complexity/cognitive_score.rb', line 36

def visit(node)
  return unless node
  __send__(HANDLERS.fetch(node.class, :descend), node)
end