summaryrefslogtreecommitdiff
path: root/lib/rubygems/dependency_resolver/activation_request.rb
blob: c5d1e24d8511b5a9ee7c9e2aeaa10e3d59f2c00b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
##
# Specifies a Specification object that should be activated.
# Also contains a dependency that was used to introduce this
# activation.

class Gem::DependencyResolver::ActivationRequest

  attr_reader :request

  attr_reader :spec

  def initialize spec, req, others_possible = true
    @spec = spec
    @request = req
    @others_possible = others_possible
  end

  def == other
    case other
    when Gem::Specification
      @spec == other
    when Gem::DependencyResolver::ActivationRequest
      @spec == other.spec && @request == other.request
    else
      false
    end
  end

  def download path
    if @spec.respond_to? :source
      source = @spec.source
    else
      source = Gem.sources.first
    end

    Gem.ensure_gem_subdirectories path

    source.download full_spec, path
  end

  def full_name
    @spec.full_name
  end

  def full_spec
    Gem::Specification === @spec ? @spec : @spec.spec
  end

  def inspect # :nodoc:
    others =
      case @others_possible
      when true then # TODO remove at RubyGems 3
        ' (others possible)'
      when false then # TODO remove at RubyGems 3
        nil
      else
        unless @others_possible.empty? then
          others = @others_possible.map { |s| s.full_name }
          " (others possible: #{others.join ', '})"
        end
      end

    '#<%s for %p from %s%s>' % [
      self.class, @spec, @request, others
    ]
  end

  ##
  # Indicates if the requested gem has already been installed.

  def installed?
    case @spec
    when Gem::DependencyResolver::VendorSpecification then
      true
    else
      this_spec = full_spec

      Gem::Specification.any? do |s|
        s == this_spec
      end
    end
  end

  def name
    @spec.name
  end

  ##
  # Indicate if this activation is one of a set of possible
  # requests for the same Dependency request.

  def others_possible?
    case @others_possible
    when true, false then
      @others_possible
    else
      not @others_possible.empty?
    end
  end

  ##
  # Return the ActivationRequest that contained the dependency
  # that we were activated for.

  def parent
    @request.requester
  end

  def pretty_print q # :nodoc:
    q.group 2, '[Activation request', ']' do
      q.breakable
      q.pp @spec

      q.breakable
      q.text ' for '
      q.pp @request

      case @others_possible
      when false then
      when true then
        q.breakable
        q.text 'others possible'
      else
        unless @others_possible.empty? then
          q.breakable
          q.text 'others '
          q.pp @others_possible.map { |s| s.full_name }
        end
      end
    end
  end

  def version
    @spec.version
  end

end