Class: RailsLens::Parsers::PrismParser

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_lens/parsers/prism_parser.rb

Class Method Summary collapse

Class Method Details

.extract_constant_name(constant_path) ⇒ Object 



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# File 'lib/rails_lens/parsers/prism_parser.rb', line 77

def self.extract_constant_name(constant_path)
  case constant_path
  when Prism::ConstantReadNode
    constant_path.name.to_s
  when Prism::ConstantPathNode
    # For nested constants like A::B::C, extract the last part
    extract_constant_name(constant_path.child)
  else
    constant_path.to_s
  end
end

.parse_file(file_path) ⇒ Object 



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# File 'lib/rails_lens/parsers/prism_parser.rb', line 8

def self.parse_file(file_path)
  source = File.read(file_path)
  parsed = Prism.parse(source)

  classes = []
  modules = []

  traverse_node(parsed.value, classes, modules)

  ParserResult.new(
    classes: classes,
    modules: modules,
    file_path: file_path
  )
rescue Prism::ParseError, Errno::ENOENT, IOError
  # Return empty result on parse errors
  ParserResult.new(
    classes: [],
    modules: [],
    file_path: file_path
  )
end

.traverse_children(node, classes, modules, namespace = []) ⇒ Object 



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# File 'lib/rails_lens/parsers/prism_parser.rb', line 69

def self.traverse_children(node, classes, modules, namespace = [])
  return unless node.respond_to?(:child_nodes)

  node.child_nodes.each do |child_node|
    traverse_node(child_node, classes, modules, namespace)
  end
end

.traverse_node(node, classes, modules, namespace = []) ⇒ Object 



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# File 'lib/rails_lens/parsers/prism_parser.rb', line 31

def self.traverse_node(node, classes, modules, namespace = [])
  return unless node

  case node
  when Prism::ClassNode
    class_name = extract_constant_name(node.constant_path)

    classes << ClassInfo.new(
      name: class_name,
      line_number: node.location.start_line,
      column: node.location.start_column,
      end_line: node.location.end_line,
      namespace: namespace.join('::').presence
    )

    # Process nested classes and modules
    traverse_children(node, classes, modules, namespace + [class_name])

  when Prism::ModuleNode
    module_name = extract_constant_name(node.constant_path)

    modules << ModuleInfo.new(
      name: module_name,
      line_number: node.location.start_line,
      column: node.location.start_column,
      end_line: node.location.end_line,
      namespace: namespace.join('::').presence
    )

    # Process nested classes and modules
    traverse_children(node, classes, modules, namespace + [module_name])

  else
    # For other node types, recursively traverse children
    traverse_children(node, classes, modules, namespace)
  end
end