Class: RSpecLetAnalyzer::Visitors::PrismVisitor

Inherits:
Prism::Visitor
  • Object
show all
Defined in:
lib/rspec_let_analyzer/visitors/prism_visitor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(max_nesting_depth, track_factories) ⇒ PrismVisitor

Returns a new instance of PrismVisitor.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 10

def initialize(max_nesting_depth, track_factories)
  @root_lets = 0
  @total_its = 0
  @redefinitions = 0
  @depth = 0
  @let_names_by_depth = {}
  @max_nesting_depth = max_nesting_depth
  @nesting_counts = Array.new(max_nesting_depth, 0) if max_nesting_depth
  @track_factories = track_factories
  @factory_usage = Hash.new(0) if track_factories
  @before_creates = 0
  @in_before_block = false
end

Instance Attribute Details

#before_creates ⇒ Object (readonly)

Returns the value of attribute before_creates.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def before_creates
  @before_creates
end

#factory_usage ⇒ Object (readonly)

Returns the value of attribute factory_usage.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def factory_usage
  @factory_usage
end

#nesting_counts ⇒ Object (readonly)

Returns the value of attribute nesting_counts.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def nesting_counts
  @nesting_counts
end

#redefinitions ⇒ Object (readonly)

Returns the value of attribute redefinitions.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def redefinitions
  @redefinitions
end

#root_lets ⇒ Object (readonly)

Returns the value of attribute root_lets.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def root_lets
  @root_lets
end

#total_its ⇒ Object (readonly)

Returns the value of attribute total_its.



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 8

def total_its
  @total_its
end

Instance Method Details

#visit_call_node(node) ⇒ Object 



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# File 'lib/rspec_let_analyzer/visitors/prism_visitor.rb', line 24

def visit_call_node(node)
  method_name = node.name

  case method_name
  when :describe, :context, :shared_examples, :shared_context
    @depth += 1
    super
    @depth -= 1
    # Clean up let names at this depth when exiting
    @let_names_by_depth.delete(@depth + 1)
  when :before
    # Check if this is before or before(:each)
    arg = node.arguments&.arguments&.first
    is_before_each = arg.nil? || (arg.is_a?(Prism::SymbolNode) && arg.unescaped == 'each')

    if is_before_each
      @in_before_block = true
      super
      @in_before_block = false
    else
      super
    end
  when :let, :let!
    # Get the let variable name
    let_name = extract_let_name(node)

    if let_name
      # Check if this let redefines one from an outer scope
      @redefinitions += 1 if redefinition?(let_name)

      # Track this let name at current depth
      @let_names_by_depth[@depth] ||= []
      @let_names_by_depth[@depth] << let_name
    end

    # Count by nesting depth
    if @depth == 1
      @root_lets += 1
    elsif @max_nesting_depth
      # Track nesting counts: depth 2 -> index 0, depth 3 -> index 1, etc.
      nesting_index = @depth - 2
      if nesting_index < @max_nesting_depth - 1
        @nesting_counts[nesting_index] += 1
      else
        # Everything at max depth or beyond goes into the last bucket
        @nesting_counts[@max_nesting_depth - 1] += 1
      end
    end
    super
  when :it, :specify
    @total_its += 1
    super
  when :create, :build, :build_stubbed
    # Track if create is inside a before block
    if @in_before_block && method_name == :create
      @before_creates += 1
    end

    # Track FactoryBot usage
    if @track_factories
      factory_name = extract_factory_name(node)
      @factory_usage[factory_name] += 1 if factory_name
    end
    super
  else
    super
  end
end