Project

General

Profile

resolver.rb

Smith Paul, 02/05/2020 13:36

 
1
# frozen_string_literal: true
2
require 'rubygems/resolver/molinillo/lib/molinillo/dependency_graph'
3

    
4
module Gem::Resolver::Molinillo
5
  # This class encapsulates a dependency resolver.
6
  # The resolver is responsible for determining which set of dependencies to
7
  # activate, with feedback from the {#specification_provider}
8
  #
9
  #
10
  class Resolver
11
    require 'rubygems/resolver/molinillo/lib/molinillo/resolution'
12

    
13
    # @return [SpecificationProvider] the specification provider used
14
    #   in the resolution process
15
    attr_reader :specification_provider
16

    
17
    # @return [UI] the UI module used to communicate back to the user
18
    #   during the resolution process
19
    attr_reader :resolver_ui
20

    
21
    # Initializes a new resolver.
22
    # @param  [SpecificationProvider] specification_provider
23
    #   see {#specification_provider}
24
    # @param  [UI] resolver_ui
25
    #   see {#resolver_ui}
26
    def initialize(specification_provider, resolver_ui)
27
      @specification_provider = specification_provider
28
      @resolver_ui = resolver_ui
29
    end
30

    
31
    # Resolves the requested dependencies into a {DependencyGraph},
32
    # locking to the base dependency graph (if specified)
33
    # @param [Array] requested an array of 'requested' dependencies that the
34
    #   {#specification_provider} can understand
35
    # @param [DependencyGraph,nil] base the base dependency graph to which
36
    #   dependencies should be 'locked'
37
    def resolve(requested, base = DependencyGraph.new)
38
      Resolution.new(specification_provider,
39
                     resolver_ui,
40
                     requested,
41
                     base).
42
        resolve
43
    end
44
  end
45
end

Comments