Module: Tryruby::Shell

Includes:
NextFix
Defined in:
lib/tryruby/shell.rb

Overview

Shell extension

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#levels ⇒ Object 



58
59
60
 
# File 'lib/tryruby/shell.rb', line 58

def levels
  @levels ||= []
end

Instance Method Details

#before_loop ⇒ Object 



11
12
13
14
15
16
17
18
 
# File 'lib/tryruby/shell.rb', line 11

def before_loop
  super
  @level, @challenge = 0, -1
  next_challenge
  setup_challenge if @challenge_changed
  @challenge_changed = false
  @output = ''
end

#challenge ⇒ Object 



66
67
68
 
# File 'lib/tryruby/shell.rb', line 66

def challenge
  level[@challenge] if level && @challenge >= 0
end

#format_error(error) ⇒ Object 



50
51
52
 
# File 'lib/tryruby/shell.rb', line 50

def format_error(error)
  Colors.error(super(error))
end

#format_result(result) ⇒ Object 



54
55
56
 
# File 'lib/tryruby/shell.rb', line 54

def format_result(result)
  Colors.result(super(result))
end

#help_challenge ⇒ Object 



92
93
94
 
# File 'lib/tryruby/shell.rb', line 92

def help_challenge
  puts challenge.help if challenge
end

#level ⇒ Object 



62
63
64
 
# File 'lib/tryruby/shell.rb', line 62

def level
  levels[@level] if @level >= 0
end

#loop_eval(str) ⇒ Object 



33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/tryruby/shell.rb', line 33

def loop_eval(str)
  stdout_saved = $stdout
  $stdout = StringIO.new
  begin
    super(str)
  ensure
    @output = $stdout.string
    $stdout = stdout_saved
    puts @output if @output != ''
  end
end

#loop_once ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/tryruby/shell.rb', line 20

def loop_once
  throw :ripl_exit unless challenge
  super
  result = @error_raised ? @error : @result
  if challenge && \
    challenge.test(repl_self, result, read_variables, @output)
    puts Colors.success('Success!')
    next_challenge
  end
  setup_challenge if @challenge_changed
  @challenge_changed = false
end

#next_challenge ⇒ Object 



70
71
72
73
74
75
76
77
78
 
# File 'lib/tryruby/shell.rb', line 70

def next_challenge
  @challenge += 1
  while level && !challenge
    @challenge = 0
    @level += 1
  end
  @challenge_changed = true if challenge
  nil
end

#prev_challenge ⇒ Object 



80
81
82
83
84
85
86
87
88
89
90
 
# File 'lib/tryruby/shell.rb', line 80

def prev_challenge
  lvl, chall = @level, @challenge - 1
  while lvl > 0 && chall < 0
    lvl -= 1
    chall = levels[lvl].length - 1
  end
  return if chall < 0
  @level, @challenge = lvl, chall
  @challenge_changed = true
  nil
end

#print_eval_error(error) ⇒ Object 



45
46
47
48
 
# File 'lib/tryruby/shell.rb', line 45

def print_eval_error(error)
  @error = error
  super(error)
end