Method: RDoc::Parser::C#find_body

Defined in:
lib/rdoc/parser/c.rb

#find_body(class_name, meth_name, meth_obj, file_content, quiet = false) ⇒ Object

Find the C code corresponding to a Ruby method



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# File 'lib/rdoc/parser/c.rb', line 599

def find_body class_name, meth_name, meth_obj, file_content, quiet = false
  if file_content
    @body_table ||= {}
    @body_table[file_content] ||= gen_body_table file_content
    type, *args = @body_table[file_content][meth_name]
  end

  case type
  when :func_def
    comment = new_comment args[0], @top_level, :c
    body = args[1]
    offset, = args[2]

    comment.remove_private if comment

    # try to find the whole body
    body = $& if /#{Regexp.escape body}[^(]*?\{.*?^\}/m =~ file_content

    # The comment block may have been overridden with a 'Document-method'
    # block. This happens in the interpreter when multiple methods are
    # vectored through to the same C method but those methods are logically
    # distinct (for example Kernel.hash and Kernel.object_id share the same
    # implementation

    override_comment = find_override_comment class_name, meth_obj
    comment = override_comment if override_comment

    comment.normalize
    find_modifiers comment, meth_obj if comment

    #meth_obj.params = params
    meth_obj.start_collecting_tokens
    tk = { :line_no => 1, :char_no => 1, :text => body }
    meth_obj.add_token tk
    meth_obj.comment = comment
    meth_obj.line    = file_content[0, offset].count("\n") + 1

    body
  when :macro_def
    comment = new_comment args[0], @top_level, :c
    body = args[1]
    offset, = args[2]

    find_body class_name, args[3], meth_obj, file_content, true

    comment.normalize
    find_modifiers comment, meth_obj

    meth_obj.start_collecting_tokens
    tk = { :line_no => 1, :char_no => 1, :text => body }
    meth_obj.add_token tk
    meth_obj.comment = comment
    meth_obj.line    = file_content[0, offset].count("\n") + 1

    body
  when :macro_alias
    # with no comment we hope the aliased definition has it and use it's
    # definition

    body = find_body(class_name, args[0], meth_obj, file_content, true)

    return body if body

    @options.warn "No definition for #{meth_name}"
    false
  else # No body, but might still have an override comment
    comment = find_override_comment class_name, meth_obj

    if comment then
      comment.normalize
      find_modifiers comment, meth_obj
      meth_obj.comment = comment

      ''
    else
      @options.warn "No definition for #{meth_name}"
      false
    end
  end
end