Class: AmazingPrint::Formatters::BaseFormatter

Inherits:
Object
  • Object
show all
Includes:
Colorize
Defined in:
lib/amazing_print/formatters/base_formatter.rb

Constant Summary collapse

DEFAULT_LIMIT_SIZE = 
7
INDENT_CACHE =

precompute common indentations

(0..100).map { |i| ' ' * i }.map(&:freeze).freeze

Instance Method Summary collapse

Methods included from Colorize

#colorize

Instance Method Details

#align(value, width) ⇒ Object 



130
131
132
133
134
135
136
137
138
139
140
141
142
143
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 130

def align(value, width)
  if options[:multiline]
    indent_option = options[:indent]
    if indent_option.positive?
      value.rjust(width)
    elsif indent_option.zero?
      "#{indent}#{value.ljust(width)}"
    else
      "#{indent(indentation + indent_option)}#{value.ljust(width)}"
    end
  else
    value
  end
end

#get_limit_size ⇒ Object 



36
37
38
39
40
41
42
43
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 36

def get_limit_size
  case options[:limit]
  when true
    DEFAULT_LIMIT_SIZE
  else
    options[:limit]
  end
end

#indent(n = indentation) ⇒ Object 



120
121
122
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 120

def indent(n = indentation)
  INDENT_CACHE[n] || (' ' * n)
end

#indentation ⇒ Object

Indentation related methods



109
110
111
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 109

def indentation
  inspector.current_indentation
end

#indented(&blk) ⇒ Object 



113
114
115
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 113

def indented(&blk)
  inspector.increase_indentation(&blk)
end

#limited(data, width, is_hash: false) ⇒ Object 



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 45

def limited(data, width, is_hash: false)
  limit = get_limit_size
  if data.length <= limit
    data
  else
    # Calculate how many elements to be displayed above and below the separator.
    head = limit / 2
    tail = head - ((limit - 1) % 2)

    # Add the proper elements to the temp array and format the separator.
    temp = data[0, head] + [nil] + data[-tail, tail]

    temp[head] = if is_hash
                   "#{indent}#{data[head].strip} .. #{data[data.length - tail - 1].strip}"
                 else
                   "#{indent}[#{head.to_s.rjust(width)}] .. [#{data.length - tail - 1}]"
                 end

    temp
  end
end

#method_tuple(method) ⇒ Object 



67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 67

def method_tuple(method)
  # See http://readruby.chengguangnan.com/methods#method-objects-parameters
  # (mirror: http://archive.is/XguCA#selection-3381.1-3381.11)
  args = method.parameters.inject([]) do |arr, (type, name)|
    name ||= (type == :block ? 'block' : "arg#{arr.size + 1}")
    arr << case type
           when :req        then name.to_s
           when :keyreq     then "#{name}:"
           when :key        then "*#{name}:"
           when :opt, :rest then "*#{name}"
           when :block      then "&#{name}"
           else '?'
           end
  end

  # method.to_s formats to handle:
  #
  # #<Method: Fixnum#zero?>
  # #<Method: Fixnum(Integer)#years>
  # #<Method: User(#<Module:0x00000103207c00>)#_username>
  # #<Method: User(id: integer, username: string).table_name>
  # #<Method: User(id: integer, username: string)(ActiveRecord::Base).current>
  # #<Method: #<Class:0x100c567f>(ActiveRecord::Querying)#first>
  # #<UnboundMethod: Hello#world>
  # #<UnboundMethod: Hello#world() /home/hs/code/amazing_print/spec/methods_spec.rb:68>
  #
  if method.to_s =~ %r{(Unbound)*Method: ((#<)?[^/#]*)[#.]}
    unbound = Regexp.last_match(1) && '(unbound)'
    klass = Regexp.last_match(2)
    if klass && klass =~ /(\(\w+:\s.*?\))/ # Is this ActiveRecord-style class?
      klass.sub!(Regexp.last_match(1), '') # Yes, strip the fields leaving class name only.
    end

    owner = "#{klass}#{unbound}".gsub('(', ' (')
  end

  [method.name.to_s, "(#{args.join(', ')})", owner.to_s]
end

#outdent ⇒ Object 



124
125
126
127
128
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 124

def outdent
  i = indentation - options[:indent].abs

  INDENT_CACHE[i] || (' ' * i)
end

#should_be_limited? ⇒ Boolean

To support limited output, for example:

ap (‘a’..‘z’).to_a, :limit => 3 [

[ 0] "a",
[ 1] .. [24],
[25] "z"

]

ap (1..100).to_a, :limit => true # Default limit is 7. [

[ 0] 1,
[ 1] 2,
[ 2] 3,
[ 3] .. [96],
[97] 98,
[98] 99,
[99] 100

]

Returns:

  • (Boolean) 


32
33
34
 
# File 'lib/amazing_print/formatters/base_formatter.rb', line 32

def should_be_limited?
  options[:limit] || (options[:limit].is_a?(Integer) && options[:limit].positive?)
end