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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
require "rubygems/requirement"
##
# The Dependency class holds a Gem name and a Gem::Requirement.
class Gem::Dependency
# :stopdoc:
@warned_version_requirement = false
def self.warned_version_requirement
@warned_version_requirement
end
def self.warned_version_requirement= value
@warned_version_requirement = value
end
# :startdoc:
##
# Valid dependency types.
#--
# When this list is updated, be sure to change
# Gem::Specification::CURRENT_SPECIFICATION_VERSION as well.
TYPES = [
:development,
:runtime,
]
##
# Dependency name or regular expression.
attr_accessor :name
##
# Allows you to force this dependency to be a prerelease.
attr_writer :prerelease
##
# Dependency type.
attr_reader :type
##
# Constructs a dependency with +name+ and +requirements+. The last
# argument can optionally be the dependency type, which defaults to
# <tt>:runtime</tt>.
def initialize name, *requirements
type = Symbol === requirements.last ? requirements.pop : :runtime
requirements = requirements.first if 1 == requirements.length # unpack
unless TYPES.include? type
raise ArgumentError, "Valid types are #{TYPES.inspect}, "
+ "not #{@type.inspect}"
end
@name = name
@requirement = Gem::Requirement.create requirements
@type = type
@prerelease = false
# This is for Marshal backwards compatability. See the comments in
# +requirement+ for the dirty details.
@version_requirements = @requirement
end
##
# A dependency's hash is the XOR of the hashes of +name+, +type+,
# and +requirement+.
def hash # :nodoc:
name.hash ^ type.hash ^ requirement.hash
end
def inspect # :nodoc:
"<%s type=%p name=%p requirements=%p>" %
[self.class, @type, @name, requirement.to_s]
end
##
# Does this dependency require a prerelease?
def prerelease?
@prerelease || requirement.prerelease?
end
def pretty_print(q) # :nodoc:
q.group 1, 'Gem::Dependency.new(', ')' do
q.pp name
q.text ','
q.breakable
q.pp requirement
q.text ','
q.breakable
q.pp type
end
end
##
# What does this dependency require?
def requirement
return @requirement if defined?(@requirement) and @requirement
# @version_requirements and @version_requirement are legacy ivar
# names, and supported here because older gems need to keep
# working and Dependency doesn't implement marshal_dump and
# marshal_load. In a happier world, this would be an
# attr_accessor. The horrifying instance_variable_get you see
# below is also the legacy of some old restructurings.
#
# Note also that because of backwards compatibility (loading new
# gems in an old RubyGems installation), we can't add explicit
# marshaling to this class until we want to make a big
# break. Maybe 2.0.
#
# Children, define explicit marshal and unmarshal behavior for
# public classes. Marshal formats are part of your public API.
if defined?(@version_requirement) && @version_requirement
version = @version_requirement.instance_variable_get :@version
@version_requirement = nil
@version_requirements = Gem::Requirement.new version
end
@requirement = @version_requirements if defined?(@version_requirements)
end
##
# Rails subclasses Gem::Dependency and uses this method, so we'll hack
# around it.
alias __requirement requirement # :nodoc:
def requirements_list
requirement.as_list
end
def to_s # :nodoc:
"#{name} (#{requirement}, #{type})"
end
def version_requirements # :nodoc:
unless Gem::Dependency.warned_version_requirement then
warn "#{Gem.location_of_caller.join ':'}:Warning: " \
"Gem::Dependency#version_requirements is deprecated " \
"and will be removed on or after August 2010. " \
"Use #requirement"
Gem::Dependency.warned_version_requirement = true
end
__requirement
end
alias version_requirement version_requirements # :nodoc:
def version_requirements= requirements # :nodoc:
warn "#{Gem.location_of_caller.join ':'}:Warning: " \
"Gem::Dependency#version_requirements= is deprecated " \
"and will be removed on or after August 2010. " \
"Use Gem::Dependency.new."
@requirement = Gem::Requirement.create requirements
end
def == other # :nodoc:
Gem::Dependency === other &&
self.name == other.name &&
self.type == other.type &&
self.requirement == other.requirement
end
##
# Dependencies are ordered by name.
def <=> other
[@name] <=> [other.name]
end
##
# Uses this dependency as a pattern to compare to +other+. This
# dependency will match if the name matches the other's name, and
# other has only an equal version requirement that satisfies this
# dependency.
def =~ other
unless Gem::Dependency === other
other = Gem::Dependency.new other.name, other.version rescue return false
end
pattern = name
if Regexp === pattern then
return false unless pattern =~ other.name
else
return false unless pattern == other.name
end
reqs = other.requirement.requirements
return false unless reqs.length == 1
return false unless reqs.first.first == '='
version = reqs.first.last
requirement.satisfied_by? version
end
def match?(spec_name, spec_version)
pattern = name
if Regexp === pattern
return false unless pattern =~ spec_name
else
return false unless pattern == spec_name
end
return true if requirement.none?
requirement.satisfied_by? Gem::Version.new(spec_version)
end
end
|