You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: dol.rb
    path of file: ./repos/grinder/node/lib/metasm/metasm/exe_format
    
    the code of the file until where you have to start completion: #    This file is part of Metasm, the Ruby assembly manipulation suite
#    Copyright (C) 2006-2009 Yoann GUILLOT
#
#    Licence is LGPL, see LICENCE in the top-level directory

require 'metasm/exe_format/main'
require 'metasm/encode'
require 'metasm
    
	def decode_word(edata = @encoded) edata.decode_imm(:u32, @endianness) end
	def encode_word(w) Expression[w].encode(:u32, @endianness) end

	def initialize(cpu = nil)
		@endianness = :big
		@header = Header.new
		@text = []
		@data = []
		super(cpu)
	end

	def decode_header
		@encoded.ptr = 0
		@header.decode(self)
	end

	def decode
		decode_header

		7.times { |i|
			off = @header.send("foff_text#{i}")
			sz  = @header.send("size_text#{i}")
			@text << @encoded[off, sz]
		}
		11.times { |i|
			off = @header.send("foff_data#{i}")
			sz  = @header.send("size_data#{i}")
			@data << @encoded[off, sz]
		}
	end

	def encode(ignored=nil)
		binding = {}
		addr = 0	# XXX
		@encoded = EncodedData.new
		@text.each_with_index { |s, i|
			next if not s
			@header.send("foff_text#{i}=", new_label("foff_text#{i}"))
			@header.send("size_text#{i}=", new_label("size_text#{i}"))
			@header.send("addr_text#{i}=", new_label("addr_text#{i}")) if not @header.send("addr_text#{i}")
		}
		@data.each_with_index { |s, i|
			next if not s
			@header.send("foff_data#{i}=", new_label("foff_data#{i}"))
			@header.send("size_data#{i}=", new_label("size_data#{i}"))
			@header.send("addr_data#{i}=", new_label("addr_data#{i}")) if not @header.send("addr_data#{i}")
		}
		@encoded << @header.encode(self)

		@text.each_with_index { |s, i|
			next if not s
			binding[@header.send("foff_text#{i}")] = @encoded.length
			binding[@header.send("size_text#{i}")] = s.length
			binding[@header.send("addr_text#{i}")] = addr if @header.send("addr_text#{i}").kind_of? String
			binding.update s.binding(addr)
			@encoded << s
			addr += s.length
		}
		@data.each_with_index { |s, i|
			next if not s
			binding[@header.send("foff_data#{i}")] = @encoded.length
			binding[@header.send("size_data#{i}")] = s.length
			binding[@header.send("addr_data#{i}")] = addr if @header.send("addr_data#{i}").kind_of? String
			binding.update s.binding(addr)
			@encoded << s
			addr += s.length
		}
		@encoded.fixup! binding
		@encoded.data
	end

	def parse_init
		@textsrc ||= []
		@datasrc ||= []
		@cursource ||= @textsrc
		super()
	end

	def parse_parser_instruction(instr)
		case instr.raw.downcase
		when '.text'; @cursource = @textsrc
		when '.data'; @cursource = @datasrc
		when '.entrypoint'
			# ".entrypoint <somelabel/expression>" or ".entrypoint" (here)
			@lexer.skip_space
			if tok = @lexer.nexttok and tok.type == :string
				raise instr if not entrypoint = Expression.parse(@lexer)
			else
				entrypoint = new_label('entrypoint')
				@cursource << Label.new(entrypoint, instr.backtrace.dup)
			end
			@header.entrypoint = entrypoint
		else super(instr)
		end
	end