Wrong method list detection in coffeescript

[shagabutdinov]

Method extract_methods gives wrong end and body_end values for coffeescript code:

class Name
  constructor: (test) ->
    x = test

  n: (test) ->
    a = test

  b: (test) ->
    z = test

Actual result:

[
  { 
    'privacy': 'public', 
    'body_start': 33, 
    'body_end': 106, 
    'name': 'constructor', 
    'start': 13, 
    'end': 106, 
    'index': 0,
  }, 
  { 
    'privacy': 'public', 
    'body_start': 62, 
    'body_end': 106, 
    'name': 'n', 
    'start': 52, 
    'end': 106, 
    'index': 1,
  }, 
  { 
    'privacy': 'public', 
    'body_start': 91, 
    'body_end': 106, 
    'name': 'b', 
    'start': 81, 
    'end': 106, 
    'index': 2,
  }
]

Expected result:

[
  { 
    'privacy': 'public', 
    'body_start': 33, 
    'body_end': 48, 
    'name': 'constructor', 
    'start': 13, 
    'end': 48, 
    'index': 0,
  }, 
  { 
    'privacy': 'public', 
    'body_start': 62, 
    'body_end': 77, 
    'name': 'n', 
    'start': 52, 
    'end': 77, 
    'index': 1,
  }, 
  { 
    'privacy': 'public', 
    'body_start': 91, 
    'body_end': 106, 
    'name': 'b', 
    'start': 81, 
    'end': 106, 
    'index': 2,
  }
]