module Elparser

Constants

VERSION

Public Class Methods

encode(obj) click to toggle source

Translate a ruby object to s-expression string.

# File lib/elparser.rb, line 316
def self.encode(obj)
  return _encode(obj).to_s
end

encode_multi(objs, sep = "\n") click to toggle source

Translate many ruby objects to s-expression string. The result s-exps are concatenated into one string.

# File lib/elparser.rb, line 322
def self.encode_multi(objs, sep = "\n")
  return objs.map {|obj| _encode(obj).to_s }.join(sep)
end

Private Class Methods

_encode(arg) click to toggle source

# File lib/elparser.rb, line 339
def self._encode(arg)
  return "nil" if arg.nil?
  c = arg.class
  if c ==  Fixnum then
    return SExpNumber.new :INTEGER, arg.to_s
  elsif c ==  Float then
    return SExpNumber.new :FLOAT, arg.to_s
  elsif c ==  String then
    return SExpString.new arg
  elsif c ==  Symbol then
    return SExpSymbol.new arg.to_s
  elsif c ==  Array then
    return _encode_array(arg)
  elsif c ==  Hash then
    return _encode_hash(arg)
  elsif c ==  TrueClass then
    return SExpSymbol.new "t"
  elsif c ==  FalseClass then
    return SExpNil.new
  end
  raise EncodingError.new("Can't encode object : #{arg}", arg)
end

_encode_array(arg) click to toggle source

# File lib/elparser.rb, line 362
def self._encode_array(arg)
  return SExpNil.new if arg.nil? || arg.size == 0
  return SExpList.new arg.map{|i| _encode(i)}
end

_encode_hash(arg) click to toggle source

# File lib/elparser.rb, line 367
def self._encode_hash(arg)
  return SExpNil.new if arg.nil? || arg.size == 0
  return SExpList.new arg.map{|k,v| SExpCons.new(_encode(k),_encode(v))}
end