Class: Dwarftree::DebugInfoParser

Inherits:
Object
  • Object
show all
Defined in:
lib/dwarftree/debug_info_parser.rb

Constant Summary collapse

CommandError = 
Class.new(StandardError)
ParserError = 
Class.new(StandardError)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(offset_ranges, flat:) ⇒ DebugInfoParser

Returns a new instance of DebugInfoParser.



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# File 'lib/dwarftree/debug_info_parser.rb', line 36

def initialize(offset_ranges, flat:)
  @offset_die = {} # { 12345 => #<Dwarftree::DIE:* ...> }
  @offset_ranges = offset_ranges # { 12345 => [(12345..67890), ...] }
  @flat = flat
end

Class Method Details

.parse(object, flat:) ⇒ Object 



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# File 'lib/dwarftree/debug_info_parser.rb', line 21

def self.parse(object, flat:)
  begin
    offset_ranges = Dwarftree::DebugRangesParser.parse(object)
  rescue Dwarftree::DebugRangesParser::CommandError => e
    raise CommandError.new(e.message)
  end

  cmd = ['objdump', '--dwarf=info', object]
  debug_info = IO.popen(cmd, &:read)
  unless $?.success?
    raise CommandError.new("Failed to run: #{cmd.join(' ')}")
  end
  new(offset_ranges, flat: flat).parse(debug_info)
end

Instance Method Details

#parse(debug_info) ⇒ Array<Dwarftree::DIE::CompileUnit>

Parameters:

  • debug_info (String)

Returns:



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# File 'lib/dwarftree/debug_info_parser.rb', line 44

def parse(debug_info)
  nodes = []
  each_compilation_unit(debug_info) do |compilation_unit|
    dies = parse_compilation_unit(compilation_unit)
    if @flat
      nodes += dies
    else
      nodes << build_tree(dies)
    end
  end
  nodes
end