Class: ActiveMutator::SubjectFinder

Inherits:
Prism::Visitor
  • Object
show all
Defined in:
lib/active_mutator/subject_finder.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ SubjectFinder

Returns a new instance of SubjectFinder.



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# File 'lib/active_mutator/subject_finder.rb', line 14

def initialize(file)
  @file = file
  @stack = []
  @subjects = []
  super()
end

Instance Attribute Details

#subjects ⇒ Object (readonly)

Returns the value of attribute subjects.



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# File 'lib/active_mutator/subject_finder.rb', line 12

def subjects
  @subjects
end

Class Method Details

.call(file) ⇒ Object 



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# File 'lib/active_mutator/subject_finder.rb', line 3

def self.call(file)
  result = Prism.parse(File.read(file))
  return [] unless result.success?

  finder = new(file)
  finder.visit(result.value)
  finder.subjects
end

Instance Method Details

#visit_class_node(node) ⇒ Object 



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# File 'lib/active_mutator/subject_finder.rb', line 21

def visit_class_node(node)
  with_scope(node.constant_path.slice) { super }
end

#visit_def_node(node) ⇒ Object 



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# File 'lib/active_mutator/subject_finder.rb', line 32

def visit_def_node(node)
  singleton = node.receiver.is_a?(Prism::SelfNode)
  scope = @stack.empty? ? nil : @stack.join("::")
  loc = node.location
  @subjects << Subject.new(
    name: "#{scope || "Object"}#{singleton ? "." : "#"}#{node.name}",
    file: @file,
    byte_range: loc.start_offset...loc.end_offset,
    line_range: loc.start_line..loc.end_line,
    constant_scope: scope,
    kind: singleton ? :singleton : :instance
  )
  # No `super`: nested defs are out of scope for v1.
end

#visit_module_node(node) ⇒ Object 



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# File 'lib/active_mutator/subject_finder.rb', line 25

def visit_module_node(node)
  with_scope(node.constant_path.slice) { super }
end

#visit_singleton_class_node(node) ⇒ Object

class << self bodies are a documented v1 limit: not visited.



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# File 'lib/active_mutator/subject_finder.rb', line 30

def visit_singleton_class_node(node); end