blob: a6bfaab307e45befa8b77d78828882600c662f2a (
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
|
##
# The RequirementList is used to hold the requirements being considered
# while resolving a set of gems.
#
# The RequirementList acts like a queue where the oldest items are removed
# first.
class Gem::Resolver::RequirementList
include Enumerable
##
# Creates a new RequirementList.
def initialize
@exact = []
@list = []
end
def initialize_copy other # :nodoc:
@exact = @exact.dup
@list = @list.dup
end
##
# Adds Resolver::DependencyRequest +req+ to this requirements list.
def add(req)
if req.requirement.exact?
@exact.push req
else
@list.push req
end
req
end
##
# Enumerates requirements in the list
def each # :nodoc:
return enum_for __method__ unless block_given?
@exact.each do |requirement|
yield requirement
end
@list.each do |requirement|
yield requirement
end
end
##
# How many elements are in the list
def size
@exact.size + @list.size
end
##
# Is the list empty?
def empty?
@exact.empty? && @list.empty?
end
##
# Remove the oldest DependencyRequest from the list.
def remove
return @exact.shift unless @exact.empty?
@list.shift
end
##
# Returns the oldest five entries from the list.
def next5
x = @exact[0,5]
x + @list[0,5 - x.size]
end
end
|
