# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/resolution.rb, line 83
def <=>(other)
if state_index > other.state_index
1
elsif state_index == other.state_index
reversed_requirement_tree_index <=> other.reversed_requirement_tree_index
else
-1
end
end
We compare UnwindDetails when choosing which state to unwind to. If two options have the same state_index we prefer the one most removed from a requirement that caused the conflict. Both options would unwind to the same state, but a ‘grandparent` option will filter out fewer of its possibilities after doing so - where a state is both a `parent` and a `grandparent` to requirements that have caused a conflict this is the correct behaviour. @param [UnwindDetail] other UnwindDetail to be compared @return [Integer] integer specifying ordering
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/resolution.rb, line 126
def all_requirements
@all_requirements ||= requirement_trees.flatten(1)
end
@return [Array] array of all the requirements that led to the need for
this unwind
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/resolution.rb, line 95
def reversed_requirement_tree_index
@reversed_requirement_tree_index ||=
if state_requirement
requirement_tree.reverse.index(state_requirement)
else
999_999
end
end
@return [Integer] index of state requirement in reversed requirement tree
(the conflicting requirement itself will be at position 0)
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/resolution.rb, line 116
def sub_dependencies_to_avoid
@requirements_to_avoid ||=
requirement_trees.map do |tree|
index = tree.index(state_requirement)
tree[index + 1] if index
end.compact
end
@return [Array] array of sub-dependencies to avoid when choosing a
new possibility for the state we've unwound to. Only relevant for non-primary unwinds
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/resolution.rb, line 109
def unwinding_to_primary_requirement?
requirement_tree.last == state_requirement
end
@return [Boolean] where the requirement of the state we’re unwinding
to directly caused the conflict. Note: in this case, it is impossible for the state we're unwinding to to be a parent of any of the other conflicting requirements (or we would have circularity)